Merge branch 'paultyng-pt/newrelic'

builtin/providers/newrelic/config.go

@@ -0,0 +1,29 @@
+package newrelic
+
+import (
+	"log"
+
+	"github.com/hashicorp/terraform/helper/logging"
+	newrelic "github.com/paultyng/go-newrelic/api"
+)
+
+// Config contains New Relic provider settings
+type Config struct {
+	APIKey string
+	APIURL string
+}
+
+// Client returns a new client for accessing New Relic
+func (c *Config) Client() (*newrelic.Client, error) {
+	nrConfig := newrelic.Config{
+		APIKey:  c.APIKey,
+		Debug:   logging.IsDebugOrHigher(),
+		BaseURL: c.APIURL,
+	}
+
+	client := newrelic.New(nrConfig)
+
+	log.Printf("[INFO] New Relic client configured")
+
+	return &client, nil
+}

builtin/providers/newrelic/data_source_newrelic_application.go

@@ -0,0 +1,65 @@
+package newrelic
+
+import (
+	"fmt"
+	"log"
+	"strconv"
+
+	"github.com/hashicorp/terraform/helper/schema"
+	newrelic "github.com/paultyng/go-newrelic/api"
+)
+
+func dataSourceNewRelicApplication() *schema.Resource {
+	return &schema.Resource{
+		Read: dataSourceNewRelicApplicationRead,
+
+		Schema: map[string]*schema.Schema{
+			"name": {
+				Type:     schema.TypeString,
+				Required: true,
+			},
+			"instance_ids": {
+				Type:     schema.TypeList,
+				Elem:     &schema.Schema{Type: schema.TypeInt},
+				Computed: true,
+			},
+			"host_ids": {
+				Type:     schema.TypeList,
+				Elem:     &schema.Schema{Type: schema.TypeInt},
+				Computed: true,
+			},
+		},
+	}
+}
+
+func dataSourceNewRelicApplicationRead(d *schema.ResourceData, meta interface{}) error {
+	client := meta.(*newrelic.Client)
+
+	log.Printf("[INFO] Reading New Relic applications")
+
+	applications, err := client.ListApplications()
+	if err != nil {
+		return err
+	}
+
+	var application *newrelic.Application
+	name := d.Get("name").(string)
+
+	for _, a := range applications {
+		if a.Name == name {
+			application = &a
+			break
+		}
+	}
+
+	if application == nil {
+		return fmt.Errorf("The name '%s' does not match any New Relic applications.", name)
+	}
+
+	d.SetId(strconv.Itoa(application.ID))
+	d.Set("name", application.Name)
+	d.Set("instance_ids", application.Links.InstanceIDs)
+	d.Set("host_ids", application.Links.HostIDs)
+
+	return nil
+}

builtin/providers/newrelic/data_source_newrelic_application_test.go

@@ -0,0 +1,50 @@
+package newrelic
+
+import (
+	"fmt"
+	"testing"
+
+	"github.com/hashicorp/terraform/helper/resource"
+	"github.com/hashicorp/terraform/terraform"
+)
+
+func TestAccNewRelicApplication_Basic(t *testing.T) {
+	resource.Test(t, resource.TestCase{
+		PreCheck:  func() { testAccPreCheck(t) },
+		Providers: testAccProviders,
+		Steps: []resource.TestStep{
+			resource.TestStep{
+				Config: testAccNewRelicApplicationConfig(),
+				Check: resource.ComposeTestCheckFunc(
+					testAccNewRelicApplication("data.newrelic_application.app"),
+				),
+			},
+		},
+	})
+}
+
+func testAccNewRelicApplication(n string) resource.TestCheckFunc {
+	return func(s *terraform.State) error {
+		r := s.RootModule().Resources[n]
+		a := r.Primary.Attributes
+
+		if a["id"] == "" {
+			return fmt.Errorf("Expected to get an application from New Relic")
+		}
+
+		if a["name"] != testAccExpectedApplicationName {
+			return fmt.Errorf("Expected the application name to be: %s, but got: %s", testAccExpectedApplicationName, a["name"])
+		}
+
+		return nil
+	}
+}
+
+// The test application for this data source is created in provider_test.go
+func testAccNewRelicApplicationConfig() string {
+	return fmt.Sprintf(`
+data "newrelic_application" "app" {
+	name = "%s"
+}
+`, testAccExpectedApplicationName)
+}

builtin/providers/newrelic/helpers.go

@@ -0,0 +1,37 @@
+package newrelic
+
+import (
+	"fmt"
+	"strconv"
+	"strings"
+)
+
+func parseIDs(serializedID string, count int) ([]int, error) {
+	rawIDs := strings.SplitN(serializedID, ":", count)
+	if len(rawIDs) != count {
+		return []int{}, fmt.Errorf("Unable to parse ID %v", serializedID)
+	}
+
+	ids := make([]int, count)
+
+	for i, rawID := range rawIDs {
+		id, err := strconv.ParseInt(rawID, 10, 32)
+		if err != nil {
+			return ids, err
+		}
+
+		ids[i] = int(id)
+	}
+
+	return ids, nil
+}
+
+func serializeIDs(ids []int) string {
+	idStrings := make([]string, len(ids))
+
+	for i, id := range ids {
+		idStrings[i] = strconv.Itoa(id)
+	}
+
+	return strings.Join(idStrings, ":")
+}

builtin/providers/newrelic/helpers_test.go

@@ -0,0 +1,26 @@
+package newrelic
+
+import "testing"
+
+func TestParseIDs_Basic(t *testing.T) {
+	ids, err := parseIDs("1:2", 2)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if len(ids) != 2 {
+		t.Fatal(len(ids))
+	}
+
+	if ids[0] != 1 || ids[1] != 2 {
+		t.Fatal(ids)
+	}
+}
+
+func TestSerializeIDs_Basic(t *testing.T) {
+	id := serializeIDs([]int{1, 2})
+
+	if id != "1:2" {
+		t.Fatal(id)
+	}
+}

builtin/providers/newrelic/import_newrelic_alert_channel_test.go

@@ -0,0 +1,29 @@
+package newrelic
+
+import (
+	"testing"
+
+	"github.com/hashicorp/terraform/helper/acctest"
+	"github.com/hashicorp/terraform/helper/resource"
+)
+
+func TestAccNewRelicAlertChannel_import(t *testing.T) {
+	resourceName := "newrelic_alert_channel.foo"
+	rName := acctest.RandString(5)
+	resource.Test(t, resource.TestCase{
+		PreCheck:     func() { testAccPreCheck(t) },
+		Providers:    testAccProviders,
+		CheckDestroy: testAccCheckNewRelicAlertChannelDestroy,
+		Steps: []resource.TestStep{
+			resource.TestStep{
+				Config: testAccCheckNewRelicAlertChannelConfig(rName),
+			},
+
+			resource.TestStep{
+				ResourceName:      resourceName,
+				ImportState:       true,
+				ImportStateVerify: true,
+			},
+		},
+	})
+}

builtin/providers/newrelic/import_newrelic_alert_condition_test.go

@@ -0,0 +1,30 @@
+package newrelic
+
+import (
+	"testing"
+
+	"github.com/hashicorp/terraform/helper/acctest"
+	"github.com/hashicorp/terraform/helper/resource"
+)
+
+func TestAccNewRelicAlertCondition_import(t *testing.T) {
+	resourceName := "newrelic_alert_condition.foo"
+	rName := acctest.RandString(5)
+
+	resource.Test(t, resource.TestCase{
+		PreCheck:     func() { testAccPreCheck(t) },
+		Providers:    testAccProviders,
+		CheckDestroy: testAccCheckNewRelicAlertConditionDestroy,
+		Steps: []resource.TestStep{
+			resource.TestStep{
+				Config: testAccCheckNewRelicAlertConditionConfig(rName),
+			},
+
+			resource.TestStep{
+				ResourceName:      resourceName,
+				ImportState:       true,
+				ImportStateVerify: true,
+			},
+		},
+	})
+}

builtin/providers/newrelic/import_newrelic_alert_policy_test.go

@@ -0,0 +1,30 @@
+package newrelic
+
+import (
+	"testing"
+
+	"github.com/hashicorp/terraform/helper/acctest"
+	"github.com/hashicorp/terraform/helper/resource"
+)
+
+func TestAccNewRelicAlertPolicy_import(t *testing.T) {
+	resourceName := "newrelic_alert_policy.foo"
+	rName := acctest.RandString(5)
+
+	resource.Test(t, resource.TestCase{
+		PreCheck:     func() { testAccPreCheck(t) },
+		Providers:    testAccProviders,
+		CheckDestroy: testAccCheckNewRelicAlertPolicyDestroy,
+		Steps: []resource.TestStep{
+			resource.TestStep{
+				Config: testAccCheckNewRelicAlertPolicyConfig(rName),
+			},
+
+			resource.TestStep{
+				ResourceName:      resourceName,
+				ImportState:       true,
+				ImportStateVerify: true,
+			},
+		},
+	})
+}

builtin/providers/newrelic/provider.go

@@ -0,0 +1,49 @@
+package newrelic
+
+import (
+	"log"
+
+	"github.com/hashicorp/terraform/helper/schema"
+	"github.com/hashicorp/terraform/terraform"
+)
+
+// Provider represents a resource provider in Terraform
+func Provider() terraform.ResourceProvider {
+	return &schema.Provider{
+		Schema: map[string]*schema.Schema{
+			"api_key": {
+				Type:        schema.TypeString,
+				Required:    true,
+				DefaultFunc: schema.EnvDefaultFunc("NEWRELIC_API_KEY", nil),
+				Sensitive:   true,
+			},
+			"api_url": {
+				Type:        schema.TypeString,
+				Optional:    true,
+				DefaultFunc: schema.EnvDefaultFunc("NEWRELIC_API_URL", "https://api.newrelic.com/v2"),
+			},
+		},
+
+		DataSourcesMap: map[string]*schema.Resource{
+			"newrelic_application": dataSourceNewRelicApplication(),
+		},
+
+		ResourcesMap: map[string]*schema.Resource{
+			"newrelic_alert_channel":        resourceNewRelicAlertChannel(),
+			"newrelic_alert_condition":      resourceNewRelicAlertCondition(),
+			"newrelic_alert_policy":         resourceNewRelicAlertPolicy(),
+			"newrelic_alert_policy_channel": resourceNewRelicAlertPolicyChannel(),
+		},
+
+		ConfigureFunc: providerConfigure,
+	}
+}
+
+func providerConfigure(data *schema.ResourceData) (interface{}, error) {
+	config := Config{
+		APIKey: data.Get("api_key").(string),
+		APIURL: data.Get("api_url").(string),
+	}
+	log.Println("[INFO] Initializing New Relic client")
+	return config.Client()
+}

builtin/providers/newrelic/provider_test.go

@@ -0,0 +1,69 @@
+package newrelic
+
+import (
+	"fmt"
+	"os"
+	"testing"
+	"time"
+
+	"github.com/hashicorp/terraform/helper/acctest"
+	"github.com/hashicorp/terraform/helper/schema"
+	"github.com/hashicorp/terraform/terraform"
+	newrelic "github.com/newrelic/go-agent"
+)
+
+var (
+	testAccExpectedApplicationName string
+	testAccProviders               map[string]terraform.ResourceProvider
+	testAccProvider                *schema.Provider
+)
+
+func init() {
+	testAccExpectedApplicationName = fmt.Sprintf("tf_test_%s", acctest.RandString(10))
+	testAccProvider = Provider().(*schema.Provider)
+	testAccProviders = map[string]terraform.ResourceProvider{
+		"newrelic": testAccProvider,
+	}
+}
+
+func TestProvider(t *testing.T) {
+	if err := Provider().(*schema.Provider).InternalValidate(); err != nil {
+		t.Fatalf("err: %s", err)
+	}
+}
+
+func TestProviderImpl(t *testing.T) {
+	var _ terraform.ResourceProvider = Provider()
+}
+
+func testAccPreCheck(t *testing.T) {
+	if v := os.Getenv("NEWRELIC_API_KEY"); v == "" {
+		t.Log(v)
+		t.Fatal("NEWRELIC_API_KEY must be set for acceptance tests")
+	}
+
+	// setup fake application by logging some metrics
+	if v := os.Getenv("NEWRELIC_LICENSE_KEY"); len(v) > 0 {
+		config := newrelic.NewConfig(testAccExpectedApplicationName, v)
+		app, err := newrelic.NewApplication(config)
+		if err != nil {
+			t.Log(err)
+			t.Fatal("Error setting up New Relic application")
+		}
+
+		if err := app.WaitForConnection(30 * time.Second); err != nil {
+			t.Log(err)
+			t.Fatal("Unable to setup New Relic application connection")
+		}
+
+		if err := app.RecordCustomEvent("terraform test", nil); err != nil {
+			t.Log(err)
+			t.Fatal("Unable to record custom event in New Relic")
+		}
+
+		app.Shutdown(30 * time.Second)
+	} else {
+		t.Log(v)
+		t.Fatal("NEWRELIC_LICENSE_KEY must be set for acceptance tests")
+	}
+}

builtin/providers/newrelic/resource_newrelic_alert_channel.go

@@ -0,0 +1,168 @@
+package newrelic
+
+import (
+	"fmt"
+	"log"
+	"strconv"
+
+	"github.com/hashicorp/terraform/helper/schema"
+	"github.com/hashicorp/terraform/helper/validation"
+	newrelic "github.com/paultyng/go-newrelic/api"
+)
+
+var alertChannelTypes = map[string][]string{
+	"campfire": []string{
+		"room",
+		"subdomain",
+		"token",
+	},
+	"email": []string{
+		"include_json_attachment",
+		"recipients",
+	},
+	"hipchat": []string{
+		"auth_token",
+		"base_url",
+		"room_id",
+	},
+	"opsgenie": []string{
+		"api_key",
+		"recipients",
+		"tags",
+		"teams",
+	},
+	"pagerduty": []string{
+		"service_key",
+	},
+	"slack": []string{
+		"channel",
+		"url",
+	},
+	"user": []string{
+		"user_id",
+	},
+	"victorops": []string{
+		"key",
+		"route_key",
+	},
+	"webhook": []string{
+		"auth_password",
+		"auth_type",
+		"auth_username",
+		"base_url",
+		"headers",
+		"payload_type",
+		"payload",
+	},
+}
+
+func resourceNewRelicAlertChannel() *schema.Resource {
+	validAlertChannelTypes := make([]string, 0, len(alertChannelTypes))
+	for k := range alertChannelTypes {
+		validAlertChannelTypes = append(validAlertChannelTypes, k)
+	}
+
+	return &schema.Resource{
+		Create: resourceNewRelicAlertChannelCreate,
+		Read:   resourceNewRelicAlertChannelRead,
+		// Update: Not currently supported in API
+		Delete: resourceNewRelicAlertChannelDelete,
+		Importer: &schema.ResourceImporter{
+			State: schema.ImportStatePassthrough,
+		},
+		Schema: map[string]*schema.Schema{
+			"name": {
+				Type:     schema.TypeString,
+				Required: true,
+				ForceNew: true,
+			},
+			"type": {
+				Type:         schema.TypeString,
+				Required:     true,
+				ForceNew:     true,
+				ValidateFunc: validation.StringInSlice(validAlertChannelTypes, false),
+			},
+			"configuration": {
+				Type:     schema.TypeMap,
+				Required: true,
+				ForceNew: true,
+				//TODO: ValidateFunc: (use list of keys from map above)
+				Sensitive: true,
+			},
+		},
+	}
+}
+
+func buildAlertChannelStruct(d *schema.ResourceData) *newrelic.AlertChannel {
+	channel := newrelic.AlertChannel{
+		Name:          d.Get("name").(string),
+		Type:          d.Get("type").(string),
+		Configuration: d.Get("configuration").(map[string]interface{}),
+	}
+
+	return &channel
+}
+
+func resourceNewRelicAlertChannelCreate(d *schema.ResourceData, meta interface{}) error {
+	client := meta.(*newrelic.Client)
+	channel := buildAlertChannelStruct(d)
+
+	log.Printf("[INFO] Creating New Relic alert channel %s", channel.Name)
+
+	channel, err := client.CreateAlertChannel(*channel)
+	if err != nil {
+		return err
+	}
+
+	d.SetId(strconv.Itoa(channel.ID))
+
+	return nil
+}
+
+func resourceNewRelicAlertChannelRead(d *schema.ResourceData, meta interface{}) error {
+	client := meta.(*newrelic.Client)
+
+	id, err := strconv.ParseInt(d.Id(), 10, 32)
+	if err != nil {
+		return err
+	}
+
+	log.Printf("[INFO] Reading New Relic alert channel %v", id)
+
+	channel, err := client.GetAlertChannel(int(id))
+	if err != nil {
+		if err == newrelic.ErrNotFound {
+			d.SetId("")
+			return nil
+		}
+
+		return err
+	}
+
+	d.Set("name", channel.Name)
+	d.Set("type", channel.Type)
+	if err := d.Set("configuration", channel.Configuration); err != nil {
+		return fmt.Errorf("[DEBUG] Error setting Alert Channel Configuration: %#v", err)
+	}
+
+	return nil
+}
+
+func resourceNewRelicAlertChannelDelete(d *schema.ResourceData, meta interface{}) error {
+	client := meta.(*newrelic.Client)
+
+	id, err := strconv.ParseInt(d.Id(), 10, 32)
+	if err != nil {
+		return err
+	}
+
+	log.Printf("[INFO] Deleting New Relic alert channel %v", id)
+
+	if err := client.DeleteAlertChannel(int(id)); err != nil {
+		return err
+	}
+
+	d.SetId("")
+
+	return nil
+}

builtin/providers/newrelic/resource_newrelic_alert_channel_test.go

@@ -0,0 +1,131 @@
+package newrelic
+
+import (
+	"fmt"
+	"strconv"
+	"testing"
+
+	"github.com/hashicorp/terraform/helper/acctest"
+	"github.com/hashicorp/terraform/helper/resource"
+	"github.com/hashicorp/terraform/terraform"
+	newrelic "github.com/paultyng/go-newrelic/api"
+)
+
+func TestAccNewRelicAlertChannel_Basic(t *testing.T) {
+	rName := acctest.RandString(5)
+	resource.Test(t, resource.TestCase{
+		PreCheck:     func() { testAccPreCheck(t) },
+		Providers:    testAccProviders,
+		CheckDestroy: testAccCheckNewRelicAlertChannelDestroy,
+		Steps: []resource.TestStep{
+			resource.TestStep{
+				Config: testAccCheckNewRelicAlertChannelConfig(rName),
+				Check: resource.ComposeTestCheckFunc(
+					testAccCheckNewRelicAlertChannelExists("newrelic_alert_channel.foo"),
+					resource.TestCheckResourceAttr(
+						"newrelic_alert_channel.foo", "name", fmt.Sprintf("tf-test-%s", rName)),
+					resource.TestCheckResourceAttr(
+						"newrelic_alert_channel.foo", "type", "email"),
+					resource.TestCheckResourceAttr(
+						"newrelic_alert_channel.foo", "configuration.recipients", "foo@example.com"),
+					resource.TestCheckResourceAttr(
+						"newrelic_alert_channel.foo", "configuration.include_json_attachment", "1"),
+				),
+			},
+			resource.TestStep{
+				Config: testAccCheckNewRelicAlertChannelConfigUpdated(rName),
+				Check: resource.ComposeTestCheckFunc(
+					testAccCheckNewRelicAlertChannelExists("newrelic_alert_channel.foo"),
+					resource.TestCheckResourceAttr(
+						"newrelic_alert_channel.foo", "name", fmt.Sprintf("tf-test-updated-%s", rName)),
+					resource.TestCheckResourceAttr(
+						"newrelic_alert_channel.foo", "type", "email"),
+					resource.TestCheckResourceAttr(
+						"newrelic_alert_channel.foo", "configuration.recipients", "bar@example.com"),
+					resource.TestCheckResourceAttr(
+						"newrelic_alert_channel.foo", "configuration.include_json_attachment", "0"),
+				),
+			},
+		},
+	})
+}
+
+func testAccCheckNewRelicAlertChannelDestroy(s *terraform.State) error {
+	client := testAccProvider.Meta().(*newrelic.Client)
+	for _, r := range s.RootModule().Resources {
+		if r.Type != "newrelic_alert_channel" {
+			continue
+		}
+
+		id, err := strconv.ParseInt(r.Primary.ID, 10, 32)
+		if err != nil {
+			return err
+		}
+
+		_, err = client.GetAlertChannel(int(id))
+
+		if err == nil {
+			return fmt.Errorf("Alert channel still exists")
+		}
+
+	}
+	return nil
+}
+
+func testAccCheckNewRelicAlertChannelExists(n string) resource.TestCheckFunc {
+	return func(s *terraform.State) error {
+		rs, ok := s.RootModule().Resources[n]
+		if !ok {
+			return fmt.Errorf("Not found: %s", n)
+		}
+		if rs.Primary.ID == "" {
+			return fmt.Errorf("No channel ID is set")
+		}
+
+		client := testAccProvider.Meta().(*newrelic.Client)
+
+		id, err := strconv.ParseInt(rs.Primary.ID, 10, 32)
+		if err != nil {
+			return err
+		}
+
+		found, err := client.GetAlertChannel(int(id))
+		if err != nil {
+			return err
+		}
+
+		if strconv.Itoa(found.ID) != rs.Primary.ID {
+			return fmt.Errorf("Channel not found: %v - %v", rs.Primary.ID, found)
+		}
+
+		return nil
+	}
+}
+
+func testAccCheckNewRelicAlertChannelConfig(rName string) string {
+	return fmt.Sprintf(`
+resource "newrelic_alert_channel" "foo" {
+  name = "tf-test-%s"
+	type = "email"
+	
+	configuration = {
+		recipients = "foo@example.com"
+		include_json_attachment = "1"
+	}
+}
+`, rName)
+}
+
+func testAccCheckNewRelicAlertChannelConfigUpdated(rName string) string {
+	return fmt.Sprintf(`
+resource "newrelic_alert_channel" "foo" {
+  name = "tf-test-updated-%s"
+	type = "email"
+	
+	configuration = {
+		recipients = "bar@example.com"
+		include_json_attachment = "0"
+	}
+}
+`, rName)
+}

builtin/providers/newrelic/resource_newrelic_alert_condition.go

@@ -0,0 +1,342 @@
+package newrelic
+
+import (
+	"fmt"
+	"log"
+	"strconv"
+
+	"github.com/hashicorp/terraform/helper/schema"
+	"github.com/hashicorp/terraform/helper/validation"
+	newrelic "github.com/paultyng/go-newrelic/api"
+)
+
+var alertConditionTypes = map[string][]string{
+	"apm_app_metric": []string{
+		"apdex",
+		"error_percentage",
+		"response_time_background",
+		"response_time_web",
+		"throughput_background",
+		"throughput_web",
+		"user_defined",
+	},
+	"apm_kt_metric": []string{
+		"apdex",
+		"error_count",
+		"error_percentage",
+		"response_time",
+		"throughput",
+	},
+	"browser_metric": []string{
+		"ajax_response_time",
+		"ajax_throughput",
+		"dom_processing",
+		"end_user_apdex",
+		"network",
+		"page_rendering",
+		"page_view_throughput",
+		"page_views_with_js_errors",
+		"request_queuing",
+		"total_page_load",
+		"user_defined",
+		"web_application",
+	},
+	"mobile_metric": []string{
+		"database",
+		"images",
+		"json",
+		"mobile_crash_rate",
+		"network_error_percentage",
+		"network",
+		"status_error_percentage",
+		"user_defined",
+		"view_loading",
+	},
+	"servers_metric": []string{
+		"cpu_percentage",
+		"disk_io_percentage",
+		"fullest_disk_percentage",
+		"load_average_one_minute",
+		"memory_percentage",
+		"user_defined",
+	},
+}
+
+func resourceNewRelicAlertCondition() *schema.Resource {
+	validAlertConditionTypes := make([]string, 0, len(alertConditionTypes))
+	for k := range alertConditionTypes {
+		validAlertConditionTypes = append(validAlertConditionTypes, k)
+	}
+
+	return &schema.Resource{
+		Create: resourceNewRelicAlertConditionCreate,
+		Read:   resourceNewRelicAlertConditionRead,
+		Update: resourceNewRelicAlertConditionUpdate,
+		Delete: resourceNewRelicAlertConditionDelete,
+		Importer: &schema.ResourceImporter{
+			State: schema.ImportStatePassthrough,
+		},
+		Schema: map[string]*schema.Schema{
+			"policy_id": {
+				Type:     schema.TypeInt,
+				Required: true,
+				ForceNew: true,
+			},
+			"name": {
+				Type:     schema.TypeString,
+				Required: true,
+			},
+			"type": {
+				Type:         schema.TypeString,
+				Required:     true,
+				ValidateFunc: validation.StringInSlice(validAlertConditionTypes, false),
+			},
+			"entities": {
+				Type:     schema.TypeList,
+				Elem:     &schema.Schema{Type: schema.TypeInt},
+				Required: true,
+				MinItems: 1,
+			},
+			"metric": {
+				Type:     schema.TypeString,
+				Required: true,
+				//TODO: ValidateFunc from map
+			},
+			"runbook_url": {
+				Type:     schema.TypeString,
+				Optional: true,
+			},
+			"term": {
+				Type: schema.TypeList,
+				Elem: &schema.Resource{
+					Schema: map[string]*schema.Schema{
+						"duration": {
+							Type:         schema.TypeInt,
+							Required:     true,
+							ValidateFunc: intInSlice([]int{5, 10, 15, 30, 60, 120}),
+						},
+						"operator": {
+							Type:         schema.TypeString,
+							Optional:     true,
+							Default:      "equal",
+							ValidateFunc: validation.StringInSlice([]string{"above", "below", "equal"}, false),
+						},
+						"priority": {
+							Type:         schema.TypeString,
+							Optional:     true,
+							Default:      "critical",
+							ValidateFunc: validation.StringInSlice([]string{"critical", "warning"}, false),
+						},
+						"threshold": {
+							Type:         schema.TypeFloat,
+							Required:     true,
+							ValidateFunc: float64Gte(0.0),
+						},
+						"time_function": {
+							Type:         schema.TypeString,
+							Required:     true,
+							ValidateFunc: validation.StringInSlice([]string{"all", "any"}, false),
+						},
+					},
+				},
+				Required: true,
+				MinItems: 1,
+			},
+			"user_defined_metric": {
+				Type:     schema.TypeString,
+				Optional: true,
+			},
+			"user_defined_value_function": {
+				Type:         schema.TypeString,
+				Optional:     true,
+				ValidateFunc: validation.StringInSlice([]string{"average", "min", "max", "total", "sample_size"}, false),
+			},
+		},
+	}
+}
+
+func buildAlertConditionStruct(d *schema.ResourceData) *newrelic.AlertCondition {
+	entitySet := d.Get("entities").([]interface{})
+	entities := make([]string, len(entitySet))
+
+	for i, entity := range entitySet {
+		entities[i] = strconv.Itoa(entity.(int))
+	}
+
+	termSet := d.Get("term").([]interface{})
+	terms := make([]newrelic.AlertConditionTerm, len(termSet))
+
+	for i, termI := range termSet {
+		termM := termI.(map[string]interface{})
+
+		terms[i] = newrelic.AlertConditionTerm{
+			Duration:     termM["duration"].(int),
+			Operator:     termM["operator"].(string),
+			Priority:     termM["priority"].(string),
+			Threshold:    termM["threshold"].(float64),
+			TimeFunction: termM["time_function"].(string),
+		}
+	}
+
+	condition := newrelic.AlertCondition{
+		Type:     d.Get("type").(string),
+		Name:     d.Get("name").(string),
+		Enabled:  true,
+		Entities: entities,
+		Metric:   d.Get("metric").(string),
+		Terms:    terms,
+		PolicyID: d.Get("policy_id").(int),
+	}
+
+	if attr, ok := d.GetOk("runbook_url"); ok {
+		condition.RunbookURL = attr.(string)
+	}
+
+	if attrM, ok := d.GetOk("user_defined_metric"); ok {
+		if attrVF, ok := d.GetOk("user_defined_value_function"); ok {
+			condition.UserDefined = newrelic.AlertConditionUserDefined{
+				Metric:        attrM.(string),
+				ValueFunction: attrVF.(string),
+			}
+		}
+	}
+
+	return &condition
+}
+
+func readAlertConditionStruct(condition *newrelic.AlertCondition, d *schema.ResourceData) error {
+	ids, err := parseIDs(d.Id(), 2)
+	if err != nil {
+		return err
+	}
+
+	policyID := ids[0]
+
+	entities := make([]int, len(condition.Entities))
+	for i, entity := range condition.Entities {
+		v, err := strconv.ParseInt(entity, 10, 32)
+		if err != nil {
+			return err
+		}
+		entities[i] = int(v)
+	}
+
+	d.Set("policy_id", policyID)
+	d.Set("name", condition.Name)
+	d.Set("type", condition.Type)
+	d.Set("metric", condition.Metric)
+	d.Set("runbook_url", condition.RunbookURL)
+	d.Set("user_defined_metric", condition.UserDefined.Metric)
+	d.Set("user_defined_value_function", condition.UserDefined.ValueFunction)
+	if err := d.Set("entities", entities); err != nil {
+		return fmt.Errorf("[DEBUG] Error setting alert condition entities: %#v", err)
+	}
+
+	var terms []map[string]interface{}
+
+	for _, src := range condition.Terms {
+		dst := map[string]interface{}{
+			"duration":      src.Duration,
+			"operator":      src.Operator,
+			"priority":      src.Priority,
+			"threshold":     src.Threshold,
+			"time_function": src.TimeFunction,
+		}
+		terms = append(terms, dst)
+	}
+
+	if err := d.Set("term", terms); err != nil {
+		return fmt.Errorf("[DEBUG] Error setting alert condition terms: %#v", err)
+	}
+
+	return nil
+}
+
+func resourceNewRelicAlertConditionCreate(d *schema.ResourceData, meta interface{}) error {
+	client := meta.(*newrelic.Client)
+	condition := buildAlertConditionStruct(d)
+
+	log.Printf("[INFO] Creating New Relic alert condition %s", condition.Name)
+
+	condition, err := client.CreateAlertCondition(*condition)
+	if err != nil {
+		return err
+	}
+
+	d.SetId(serializeIDs([]int{condition.PolicyID, condition.ID}))
+
+	return nil
+}
+
+func resourceNewRelicAlertConditionRead(d *schema.ResourceData, meta interface{}) error {
+	client := meta.(*newrelic.Client)
+
+	log.Printf("[INFO] Reading New Relic alert condition %s", d.Id())
+
+	ids, err := parseIDs(d.Id(), 2)
+	if err != nil {
+		return err
+	}
+
+	policyID := ids[0]
+	id := ids[1]
+
+	condition, err := client.GetAlertCondition(policyID, id)
+	if err != nil {
+		if err == newrelic.ErrNotFound {
+			d.SetId("")
+			return nil
+		}
+
+		return err
+	}
+
+	return readAlertConditionStruct(condition, d)
+}
+
+func resourceNewRelicAlertConditionUpdate(d *schema.ResourceData, meta interface{}) error {
+	client := meta.(*newrelic.Client)
+	condition := buildAlertConditionStruct(d)
+
+	ids, err := parseIDs(d.Id(), 2)
+	if err != nil {
+		return err
+	}
+
+	policyID := ids[0]
+	id := ids[1]
+
+	condition.PolicyID = policyID
+	condition.ID = id
+
+	log.Printf("[INFO] Updating New Relic alert condition %d", id)
+
+	updatedCondition, err := client.UpdateAlertCondition(*condition)
+	if err != nil {
+		return err
+	}
+
+	return readAlertConditionStruct(updatedCondition, d)
+}
+
+func resourceNewRelicAlertConditionDelete(d *schema.ResourceData, meta interface{}) error {
+	client := meta.(*newrelic.Client)
+
+	ids, err := parseIDs(d.Id(), 2)
+	if err != nil {
+		return err
+	}
+
+	policyID := ids[0]
+	id := ids[1]
+
+	log.Printf("[INFO] Deleting New Relic alert condition %d", id)
+
+	if err := client.DeleteAlertCondition(policyID, id); err != nil {
+		return err
+	}
+
+	d.SetId("")
+
+	return nil
+}

builtin/providers/newrelic/resource_newrelic_alert_condition_test.go

@@ -0,0 +1,189 @@
+package newrelic
+
+import (
+	"fmt"
+	"testing"
+
+	"github.com/hashicorp/terraform/helper/acctest"
+	"github.com/hashicorp/terraform/helper/resource"
+	"github.com/hashicorp/terraform/terraform"
+	newrelic "github.com/paultyng/go-newrelic/api"
+)
+
+func TestAccNewRelicAlertCondition_Basic(t *testing.T) {
+	rName := acctest.RandString(5)
+	resource.Test(t, resource.TestCase{
+		PreCheck:     func() { testAccPreCheck(t) },
+		Providers:    testAccProviders,
+		CheckDestroy: testAccCheckNewRelicAlertConditionDestroy,
+		Steps: []resource.TestStep{
+			resource.TestStep{
+				Config: testAccCheckNewRelicAlertConditionConfig(rName),
+				Check: resource.ComposeTestCheckFunc(
+					testAccCheckNewRelicAlertConditionExists("newrelic_alert_condition.foo"),
+					resource.TestCheckResourceAttr(
+						"newrelic_alert_condition.foo", "name", fmt.Sprintf("tf-test-%s", rName)),
+					resource.TestCheckResourceAttr(
+						"newrelic_alert_condition.foo", "type", "apm_app_metric"),
+					resource.TestCheckResourceAttr(
+						"newrelic_alert_condition.foo", "runbook_url", "https://foo.example.com"),
+					resource.TestCheckResourceAttr(
+						"newrelic_alert_condition.foo", "entities.#", "1"),
+					resource.TestCheckResourceAttr(
+						"newrelic_alert_condition.foo", "entities.0", "12345"),
+					resource.TestCheckResourceAttr(
+						"newrelic_alert_condition.foo", "term.#", "1"),
+					resource.TestCheckResourceAttr(
+						"newrelic_alert_condition.foo", "term.0.duration", "5"),
+					resource.TestCheckResourceAttr(
+						"newrelic_alert_condition.foo", "term.0.operator", "below"),
+					resource.TestCheckResourceAttr(
+						"newrelic_alert_condition.foo", "term.0.priority", "critical"),
+					resource.TestCheckResourceAttr(
+						"newrelic_alert_condition.foo", "term.0.threshold", "0.75"),
+					resource.TestCheckResourceAttr(
+						"newrelic_alert_condition.foo", "term.0.time_function", "all"),
+				),
+			},
+			resource.TestStep{
+				Config: testAccCheckNewRelicAlertConditionConfigUpdated(rName),
+				Check: resource.ComposeTestCheckFunc(
+					testAccCheckNewRelicAlertConditionExists("newrelic_alert_condition.foo"),
+					resource.TestCheckResourceAttr(
+						"newrelic_alert_condition.foo", "name", fmt.Sprintf("tf-test-updated-%s", rName)),
+					resource.TestCheckResourceAttr(
+						"newrelic_alert_condition.foo", "runbook_url", "https://bar.example.com"),
+					resource.TestCheckResourceAttr(
+						"newrelic_alert_condition.foo", "entities.#", "1"),
+					resource.TestCheckResourceAttr(
+						"newrelic_alert_condition.foo", "entities.0", "67890"),
+					resource.TestCheckResourceAttr(
+						"newrelic_alert_condition.foo", "term.#", "1"),
+					resource.TestCheckResourceAttr(
+						"newrelic_alert_condition.foo", "term.0.duration", "10"),
+					resource.TestCheckResourceAttr(
+						"newrelic_alert_condition.foo", "term.0.operator", "below"),
+					resource.TestCheckResourceAttr(
+						"newrelic_alert_condition.foo", "term.0.priority", "critical"),
+					resource.TestCheckResourceAttr(
+						"newrelic_alert_condition.foo", "term.0.threshold", "0.65"),
+					resource.TestCheckResourceAttr(
+						"newrelic_alert_condition.foo", "term.0.time_function", "all"),
+				),
+			},
+		},
+	})
+}
+
+// TODO: func TestAccNewRelicAlertCondition_Multi(t *testing.T) {
+
+func testAccCheckNewRelicAlertConditionDestroy(s *terraform.State) error {
+	client := testAccProvider.Meta().(*newrelic.Client)
+	for _, r := range s.RootModule().Resources {
+		if r.Type != "newrelic_alert_condition" {
+			continue
+		}
+
+		ids, err := parseIDs(r.Primary.ID, 2)
+		if err != nil {
+			return err
+		}
+
+		policyID := ids[0]
+		id := ids[1]
+
+		_, err = client.GetAlertCondition(policyID, id)
+		if err == nil {
+			return fmt.Errorf("Alert condition still exists")
+		}
+
+	}
+	return nil
+}
+
+func testAccCheckNewRelicAlertConditionExists(n string) resource.TestCheckFunc {
+	return func(s *terraform.State) error {
+		rs, ok := s.RootModule().Resources[n]
+		if !ok {
+			return fmt.Errorf("Not found: %s", n)
+		}
+		if rs.Primary.ID == "" {
+			return fmt.Errorf("No alert condition ID is set")
+		}
+
+		client := testAccProvider.Meta().(*newrelic.Client)
+
+		ids, err := parseIDs(rs.Primary.ID, 2)
+		if err != nil {
+			return err
+		}
+
+		policyID := ids[0]
+		id := ids[1]
+
+		found, err := client.GetAlertCondition(policyID, id)
+		if err != nil {
+			return err
+		}
+
+		if found.ID != id {
+			return fmt.Errorf("Alert condition not found: %v - %v", id, found)
+		}
+
+		return nil
+	}
+}
+
+func testAccCheckNewRelicAlertConditionConfig(rName string) string {
+	return fmt.Sprintf(`
+resource "newrelic_alert_policy" "foo" {
+  name = "tf-test-%[1]s"
+}
+
+resource "newrelic_alert_condition" "foo" {
+  policy_id = "${newrelic_alert_policy.foo.id}"
+
+  name        = "tf-test-%[1]s"
+  type        = "apm_app_metric"
+  entities    = ["12345"]
+  metric      = "apdex"
+  runbook_url = "https://foo.example.com"
+
+  term {
+    duration      = 5
+    operator      = "below"
+    priority      = "critical"
+    threshold     = "0.75"
+    time_function = "all"
+  }
+}
+`, rName)
+}
+
+func testAccCheckNewRelicAlertConditionConfigUpdated(rName string) string {
+	return fmt.Sprintf(`
+resource "newrelic_alert_policy" "foo" {
+  name = "tf-test-updated-%[1]s"
+}
+
+resource "newrelic_alert_condition" "foo" {
+  policy_id = "${newrelic_alert_policy.foo.id}"
+
+  name        = "tf-test-updated-%[1]s"
+  type        = "apm_app_metric"
+  entities    = ["67890"]
+  metric      = "apdex"
+  runbook_url = "https://bar.example.com"
+
+  term {
+    duration      = 10
+    operator      = "below"
+    priority      = "critical"
+    threshold     = "0.65"
+    time_function = "all"
+  }
+}
+`, rName)
+}
+
+// TODO: const testAccCheckNewRelicAlertConditionConfigMulti = `

builtin/providers/newrelic/resource_newrelic_alert_policy.go

@@ -0,0 +1,119 @@
+package newrelic
+
+import (
+	"log"
+	"strconv"
+
+	"github.com/hashicorp/terraform/helper/schema"
+	"github.com/hashicorp/terraform/helper/validation"
+	newrelic "github.com/paultyng/go-newrelic/api"
+)
+
+func resourceNewRelicAlertPolicy() *schema.Resource {
+	return &schema.Resource{
+		Create: resourceNewRelicAlertPolicyCreate,
+		Read:   resourceNewRelicAlertPolicyRead,
+		// Update: Not currently supported in API
+		Delete: resourceNewRelicAlertPolicyDelete,
+		Importer: &schema.ResourceImporter{
+			State: schema.ImportStatePassthrough,
+		},
+		Schema: map[string]*schema.Schema{
+			"name": {
+				Type:     schema.TypeString,
+				Required: true,
+				ForceNew: true,
+			},
+			"incident_preference": {
+				Type:         schema.TypeString,
+				Optional:     true,
+				Default:      "PER_POLICY",
+				ForceNew:     true,
+				ValidateFunc: validation.StringInSlice([]string{"PER_POLICY", "PER_CONDITION", "PER_CONDITION_AND_TARGET"}, false),
+			},
+			"created_at": {
+				Type:     schema.TypeInt,
+				Computed: true,
+			},
+			"updated_at": {
+				Type:     schema.TypeInt,
+				Computed: true,
+			},
+		},
+	}
+}
+
+func buildAlertPolicyStruct(d *schema.ResourceData) *newrelic.AlertPolicy {
+	policy := newrelic.AlertPolicy{
+		Name: d.Get("name").(string),
+	}
+
+	if attr, ok := d.GetOk("incident_preference"); ok {
+		policy.IncidentPreference = attr.(string)
+	}
+
+	return &policy
+}
+
+func resourceNewRelicAlertPolicyCreate(d *schema.ResourceData, meta interface{}) error {
+	client := meta.(*newrelic.Client)
+	policy := buildAlertPolicyStruct(d)
+
+	log.Printf("[INFO] Creating New Relic alert policy %s", policy.Name)
+
+	policy, err := client.CreateAlertPolicy(*policy)
+	if err != nil {
+		return err
+	}
+
+	d.SetId(strconv.Itoa(policy.ID))
+
+	return nil
+}
+
+func resourceNewRelicAlertPolicyRead(d *schema.ResourceData, meta interface{}) error {
+	client := meta.(*newrelic.Client)
+
+	id, err := strconv.ParseInt(d.Id(), 10, 32)
+	if err != nil {
+		return err
+	}
+
+	log.Printf("[INFO] Reading New Relic alert policy %v", id)
+
+	policy, err := client.GetAlertPolicy(int(id))
+	if err != nil {
+		if err == newrelic.ErrNotFound {
+			d.SetId("")
+			return nil
+		}
+
+		return err
+	}
+
+	d.Set("name", policy.Name)
+	d.Set("incident_preference", policy.IncidentPreference)
+	d.Set("created_at", policy.CreatedAt)
+	d.Set("updated_at", policy.UpdatedAt)
+
+	return nil
+}
+
+func resourceNewRelicAlertPolicyDelete(d *schema.ResourceData, meta interface{}) error {
+	client := meta.(*newrelic.Client)
+
+	id, err := strconv.ParseInt(d.Id(), 10, 32)
+	if err != nil {
+		return err
+	}
+
+	log.Printf("[INFO] Deleting New Relic alert policy %v", id)
+
+	if err := client.DeleteAlertPolicy(int(id)); err != nil {
+		return err
+	}
+
+	d.SetId("")
+
+	return nil
+}

builtin/providers/newrelic/resource_newrelic_alert_policy_channel.go

@@ -0,0 +1,137 @@
+package newrelic
+
+import (
+	"log"
+
+	"github.com/hashicorp/terraform/helper/schema"
+	newrelic "github.com/paultyng/go-newrelic/api"
+)
+
+func policyChannelExists(client *newrelic.Client, policyID int, channelID int) (bool, error) {
+	channel, err := client.GetAlertChannel(channelID)
+	if err != nil {
+		if err == newrelic.ErrNotFound {
+			return false, nil
+		}
+
+		return false, err
+	}
+
+	for _, id := range channel.Links.PolicyIDs {
+		if id == policyID {
+			return true, nil
+		}
+	}
+
+	return false, nil
+}
+
+func resourceNewRelicAlertPolicyChannel() *schema.Resource {
+	return &schema.Resource{
+		Create: resourceNewRelicAlertPolicyChannelCreate,
+		Read:   resourceNewRelicAlertPolicyChannelRead,
+		// Update: Not currently supported in API
+		Delete: resourceNewRelicAlertPolicyChannelDelete,
+		Schema: map[string]*schema.Schema{
+			"policy_id": {
+				Type:     schema.TypeInt,
+				Required: true,
+				ForceNew: true,
+			},
+			"channel_id": {
+				Type:     schema.TypeInt,
+				Required: true,
+				ForceNew: true,
+			},
+		},
+	}
+}
+
+func resourceNewRelicAlertPolicyChannelCreate(d *schema.ResourceData, meta interface{}) error {
+	client := meta.(*newrelic.Client)
+
+	policyID := d.Get("policy_id").(int)
+	channelID := d.Get("channel_id").(int)
+
+	serializedID := serializeIDs([]int{policyID, channelID})
+
+	log.Printf("[INFO] Creating New Relic alert policy channel %s", serializedID)
+
+	exists, err := policyChannelExists(client, policyID, channelID)
+	if err != nil {
+		return err
+	}
+
+	if !exists {
+		err = client.UpdateAlertPolicyChannels(policyID, []int{channelID})
+		if err != nil {
+			return err
+		}
+	}
+
+	d.SetId(serializedID)
+
+	return nil
+}
+
+func resourceNewRelicAlertPolicyChannelRead(d *schema.ResourceData, meta interface{}) error {
+	client := meta.(*newrelic.Client)
+
+	ids, err := parseIDs(d.Id(), 2)
+	if err != nil {
+		return err
+	}
+
+	policyID := ids[0]
+	channelID := ids[1]
+
+	log.Printf("[INFO] Reading New Relic alert policy channel %s", d.Id())
+
+	exists, err := policyChannelExists(client, policyID, channelID)
+	if err != nil {
+		return err
+	}
+
+	if !exists {
+		d.SetId("")
+		return nil
+	}
+
+	d.Set("policy_id", policyID)
+	d.Set("channel_id", channelID)
+
+	return nil
+}
+
+func resourceNewRelicAlertPolicyChannelDelete(d *schema.ResourceData, meta interface{}) error {
+	client := meta.(*newrelic.Client)
+
+	ids, err := parseIDs(d.Id(), 2)
+	if err != nil {
+		return err
+	}
+
+	policyID := ids[0]
+	channelID := ids[1]
+
+	log.Printf("[INFO] Deleting New Relic alert policy channel %s", d.Id())
+
+	exists, err := policyChannelExists(client, policyID, channelID)
+	if err != nil {
+		return err
+	}
+
+	if exists {
+		if err := client.DeleteAlertPolicyChannel(policyID, channelID); err != nil {
+			switch err {
+			case newrelic.ErrNotFound:
+				return nil
+			}
+			return err
+		}
+	}
+
+	d.SetId("")
+
+	return nil
+}

builtin/providers/newrelic/resource_newrelic_alert_policy_channel_test.go

@@ -0,0 +1,139 @@
+package newrelic
+
+import (
+	"fmt"
+	"testing"
+
+	"github.com/hashicorp/terraform/helper/acctest"
+	"github.com/hashicorp/terraform/helper/resource"
+	"github.com/hashicorp/terraform/terraform"
+	newrelic "github.com/paultyng/go-newrelic/api"
+)
+
+func TestAccNewRelicAlertPolicyChannel_Basic(t *testing.T) {
+	rName := acctest.RandString(5)
+	resource.Test(t, resource.TestCase{
+		PreCheck:     func() { testAccPreCheck(t) },
+		Providers:    testAccProviders,
+		CheckDestroy: testAccCheckNewRelicAlertPolicyChannelDestroy,
+		Steps: []resource.TestStep{
+			resource.TestStep{
+				Config: testAccCheckNewRelicAlertPolicyChannelConfig(rName),
+				Check: resource.ComposeTestCheckFunc(
+					testAccCheckNewRelicAlertPolicyChannelExists("newrelic_alert_policy_channel.foo"),
+				),
+			},
+			resource.TestStep{
+				Config: testAccCheckNewRelicAlertPolicyChannelConfigUpdated(rName),
+				Check: resource.ComposeTestCheckFunc(
+					testAccCheckNewRelicAlertPolicyChannelExists("newrelic_alert_policy_channel.foo"),
+				),
+			},
+		},
+	})
+}
+
+func testAccCheckNewRelicAlertPolicyChannelDestroy(s *terraform.State) error {
+	client := testAccProvider.Meta().(*newrelic.Client)
+	for _, r := range s.RootModule().Resources {
+		if r.Type != "newrelic_alert_policy_channel" {
+			continue
+		}
+
+		ids, err := parseIDs(r.Primary.ID, 2)
+		if err != nil {
+			return err
+		}
+
+		policyID := ids[0]
+		channelID := ids[1]
+
+		exists, err := policyChannelExists(client, policyID, channelID)
+		if err != nil {
+			return err
+		}
+
+		if exists {
+			return fmt.Errorf("Resource still exists")
+		}
+	}
+	return nil
+}
+
+func testAccCheckNewRelicAlertPolicyChannelExists(n string) resource.TestCheckFunc {
+	return func(s *terraform.State) error {
+		rs, ok := s.RootModule().Resources[n]
+		if !ok {
+			return fmt.Errorf("Not found: %s", n)
+		}
+		if rs.Primary.ID == "" {
+			return fmt.Errorf("No resource ID is set")
+		}
+
+		client := testAccProvider.Meta().(*newrelic.Client)
+
+		ids, err := parseIDs(rs.Primary.ID, 2)
+		if err != nil {
+			return err
+		}
+
+		policyID := ids[0]
+		channelID := ids[1]
+
+		exists, err := policyChannelExists(client, policyID, channelID)
+		if err != nil {
+			return err
+		}
+		if !exists {
+			return fmt.Errorf("Resource not found: %v", rs.Primary.ID)
+		}
+
+		return nil
+	}
+}
+
+func testAccCheckNewRelicAlertPolicyChannelConfig(rName string) string {
+	return fmt.Sprintf(`
+resource "newrelic_alert_policy" "foo" {
+  name = "tf-test-%[1]s"
+}
+
+resource "newrelic_alert_channel" "foo" {
+  name = "tf-test-%[1]s"
+	type = "email"
+	
+	configuration = {
+		recipients = "foo@example.com"
+		include_json_attachment = "1"
+	}
+}
+
+resource "newrelic_alert_policy_channel" "foo" {
+  policy_id  = "${newrelic_alert_policy.foo.id}"
+  channel_id = "${newrelic_alert_channel.foo.id}"
+}
+`, rName)
+}
+
+func testAccCheckNewRelicAlertPolicyChannelConfigUpdated(rName string) string {
+	return fmt.Sprintf(`
+resource "newrelic_alert_policy" "bar" {
+  name = "tf-test-updated-%[1]s"
+}
+
+resource "newrelic_alert_channel" "foo" {
+  name = "tf-test-updated-%[1]s"
+	type = "email"
+	
+	configuration = {
+		recipients = "bar@example.com"
+		include_json_attachment = "0"
+	}
+}
+
+resource "newrelic_alert_policy_channel" "foo" {
+  policy_id  = "${newrelic_alert_policy.bar.id}"
+  channel_id = "${newrelic_alert_channel.foo.id}"
+}
+`, rName)
+}

builtin/providers/newrelic/resource_newrelic_alert_policy_test.go

@@ -0,0 +1,112 @@
+package newrelic
+
+import (
+	"fmt"
+	"strconv"
+	"testing"
+
+	"github.com/hashicorp/terraform/helper/acctest"
+	"github.com/hashicorp/terraform/helper/resource"
+	"github.com/hashicorp/terraform/terraform"
+	newrelic "github.com/paultyng/go-newrelic/api"
+)
+
+func TestAccNewRelicAlertPolicy_Basic(t *testing.T) {
+	rName := acctest.RandString(5)
+	resource.Test(t, resource.TestCase{
+		PreCheck:     func() { testAccPreCheck(t) },
+		Providers:    testAccProviders,
+		CheckDestroy: testAccCheckNewRelicAlertPolicyDestroy,
+		Steps: []resource.TestStep{
+			resource.TestStep{
+				Config: testAccCheckNewRelicAlertPolicyConfig(rName),
+				Check: resource.ComposeTestCheckFunc(
+					testAccCheckNewRelicAlertPolicyExists("newrelic_alert_policy.foo"),
+					resource.TestCheckResourceAttr(
+						"newrelic_alert_policy.foo", "name", fmt.Sprintf("tf-test-%s", rName)),
+					resource.TestCheckResourceAttr(
+						"newrelic_alert_policy.foo", "incident_preference", "PER_POLICY"),
+				),
+			},
+			resource.TestStep{
+				Config: testAccCheckNewRelicAlertPolicyConfigUpdated(rName),
+				Check: resource.ComposeTestCheckFunc(
+					testAccCheckNewRelicAlertPolicyExists("newrelic_alert_policy.foo"),
+					resource.TestCheckResourceAttr(
+						"newrelic_alert_policy.foo", "name", fmt.Sprintf("tf-test-updated-%s", rName)),
+					resource.TestCheckResourceAttr(
+						"newrelic_alert_policy.foo", "incident_preference", "PER_CONDITION"),
+				),
+			},
+		},
+	})
+}
+
+func testAccCheckNewRelicAlertPolicyDestroy(s *terraform.State) error {
+	client := testAccProvider.Meta().(*newrelic.Client)
+	for _, r := range s.RootModule().Resources {
+		if r.Type != "newrelic_alert_policy" {
+			continue
+		}
+
+		id, err := strconv.ParseInt(r.Primary.ID, 10, 32)
+		if err != nil {
+			return err
+		}
+
+		_, err = client.GetAlertPolicy(int(id))
+
+		if err == nil {
+			return fmt.Errorf("Policy still exists")
+		}
+
+	}
+	return nil
+}
+
+func testAccCheckNewRelicAlertPolicyExists(n string) resource.TestCheckFunc {
+	return func(s *terraform.State) error {
+		rs, ok := s.RootModule().Resources[n]
+		if !ok {
+			return fmt.Errorf("Not found: %s", n)
+		}
+		if rs.Primary.ID == "" {
+			return fmt.Errorf("No policy ID is set")
+		}
+
+		client := testAccProvider.Meta().(*newrelic.Client)
+
+		id, err := strconv.ParseInt(rs.Primary.ID, 10, 32)
+		if err != nil {
+			return err
+		}
+
+		found, err := client.GetAlertPolicy(int(id))
+		if err != nil {
+			return err
+		}
+
+		if strconv.Itoa(found.ID) != rs.Primary.ID {
+			return fmt.Errorf("Policy not found: %v - %v", rs.Primary.ID, found)
+		}
+
+		return nil
+	}
+}
+
+func testAccCheckNewRelicAlertPolicyConfig(rName string) string {
+	return fmt.Sprintf(`
+resource "newrelic_alert_policy" "foo" {
+  name = "tf-test-%s"
+}
+`, rName)
+}
+
+func testAccCheckNewRelicAlertPolicyConfigUpdated(rName string) string {
+	return fmt.Sprintf(`
+resource "newrelic_alert_policy" "foo" {
+  name                = "tf-test-updated-%s"
+  incident_preference = "PER_CONDITION"
+}
+`, rName)
+}

builtin/providers/newrelic/validation.go

@@ -0,0 +1,43 @@
+package newrelic
+
+import (
+	"fmt"
+
+	"github.com/hashicorp/terraform/helper/schema"
+)
+
+func float64Gte(gte float64) schema.SchemaValidateFunc {
+	return func(i interface{}, k string) (s []string, es []error) {
+		v, ok := i.(float64)
+		if !ok {
+			es = append(es, fmt.Errorf("expected type of %s to be float64", k))
+			return
+		}
+
+		if v >= gte {
+			return
+		}
+
+		es = append(es, fmt.Errorf("expected %s to be greater than or equal to %v, got %v", k, gte, v))
+		return
+	}
+}
+
+func intInSlice(valid []int) schema.SchemaValidateFunc {
+	return func(i interface{}, k string) (s []string, es []error) {
+		v, ok := i.(int)
+		if !ok {
+			es = append(es, fmt.Errorf("expected type of %s to be int", k))
+			return
+		}
+
+		for _, p := range valid {
+			if v == p {
+				return
+			}
+		}
+
+		es = append(es, fmt.Errorf("expected %s to be one of %v, got %v", k, valid, v))
+		return
+	}
+}

builtin/providers/newrelic/validation_test.go

@@ -0,0 +1,81 @@
+package newrelic
+
+import (
+	"regexp"
+	"testing"
+
+	"github.com/hashicorp/terraform/helper/schema"
+)
+
+type testCase struct {
+	val         interface{}
+	f           schema.SchemaValidateFunc
+	expectedErr *regexp.Regexp
+}
+
+func TestValidationIntInInSlice(t *testing.T) {
+	runTestCases(t, []testCase{
+		{
+			val: 2,
+			f:   intInSlice([]int{1, 2, 3}),
+		},
+		{
+			val:         4,
+			f:           intInSlice([]int{1, 2, 3}),
+			expectedErr: regexp.MustCompile("expected [\\w]+ to be one of \\[1 2 3\\], got 4"),
+		},
+		{
+			val:         "foo",
+			f:           intInSlice([]int{1, 2, 3}),
+			expectedErr: regexp.MustCompile("expected type of [\\w]+ to be int"),
+		},
+	})
+}
+
+func TestValidationFloat64Gte(t *testing.T) {
+	runTestCases(t, []testCase{
+		{
+			val: 1.1,
+			f:   float64Gte(1.1),
+		},
+		{
+			val: 1.2,
+			f:   float64Gte(1.1),
+		},
+		{
+			val:         "foo",
+			f:           float64Gte(1.1),
+			expectedErr: regexp.MustCompile("expected type of [\\w]+ to be float64"),
+		},
+		{
+			val:         0.1,
+			f:           float64Gte(1.1),
+			expectedErr: regexp.MustCompile("expected [\\w]+ to be greater than or equal to 1.1, got 0.1"),
+		},
+	})
+}
+
+func runTestCases(t *testing.T, cases []testCase) {
+	matchErr := func(errs []error, r *regexp.Regexp) bool {
+		// err must match one provided
+		for _, err := range errs {
+			if r.MatchString(err.Error()) {
+				return true
+			}
+		}
+
+		return false
+	}
+
+	for i, tc := range cases {
+		_, errs := tc.f(tc.val, "test_property")
+
+		if len(errs) == 0 && tc.expectedErr == nil {
+			continue
+		}
+
+		if !matchErr(errs, tc.expectedErr) {
+			t.Fatalf("expected test case %d to produce error matching \"%s\", got %v", i, tc.expectedErr, errs)
+		}
+	}
+}

command/internal_plugin_list.go

@@ -36,6 +36,7 @@ import (
 	logentriesprovider "github.com/hashicorp/terraform/builtin/providers/logentries"
 	mailgunprovider "github.com/hashicorp/terraform/builtin/providers/mailgun"
 	mysqlprovider "github.com/hashicorp/terraform/builtin/providers/mysql"
+	newrelicprovider "github.com/hashicorp/terraform/builtin/providers/newrelic"
 	nomadprovider "github.com/hashicorp/terraform/builtin/providers/nomad"
 	nullprovider "github.com/hashicorp/terraform/builtin/providers/null"
 	openstackprovider "github.com/hashicorp/terraform/builtin/providers/openstack"
@@ -99,6 +100,7 @@ var InternalProviders = map[string]plugin.ProviderFunc{
 	"logentries":   logentriesprovider.Provider,
 	"mailgun":      mailgunprovider.Provider,
 	"mysql":        mysqlprovider.Provider,
+	"newrelic":     newrelicprovider.Provider,
 	"nomad":        nomadprovider.Provider,
 	"null":         nullprovider.Provider,
 	"openstack":    openstackprovider.Provider,

vendor/github.com/newrelic/go-agent/CHANGELOG.md

@@ -0,0 +1,155 @@
+## ChangeLog
+
+## 1.5.0
+
+* Added support for Windows.  Thanks to @ianomad and @lvxv for the contributions.
+
+* The number of heap objects allocated is recorded in the
+  `Memory/Heap/AllocatedObjects` metric.  This will soon be displayed on the "Go
+  runtime" page.
+
+* If the [DatastoreSegment](https://godoc.org/github.com/newrelic/go-agent#DatastoreSegment)
+  fields `Host` and `PortPathOrID` are not provided, they will no longer appear
+  as `"unknown"` in transaction traces and slow query traces.
+
+* Stack traces will now be nicely aligned in the APM UI.
+
+## 1.4.0
+
+* Added support for slow query traces.  Slow datastore segments will now
+ generate slow query traces viewable on the datastore tab.  These traces include
+ a stack trace and help you to debug slow datastore activity.
+ [Slow Query Documentation](https://docs.newrelic.com/docs/apm/applications-menu/monitoring/viewing-slow-query-details)
+
+* Added new
+[DatastoreSegment](https://godoc.org/github.com/newrelic/go-agent#DatastoreSegment)
+fields `ParameterizedQuery`, `QueryParameters`, `Host`, `PortPathOrID`, and
+`DatabaseName`.  These fields will be shown in transaction traces and in slow
+query traces.
+
+## 1.3.0
+
+* Breaking Change: Added a timeout parameter to the `Application.Shutdown` method.
+
+## 1.2.0
+
+* Added support for instrumenting short-lived processes:
+  * The new `Application.Shutdown` method allows applications to report
+    data to New Relic without waiting a full minute.
+  * The new `Application.WaitForConnection` method allows your process to
+    defer instrumentation until the application is connected and ready to
+    gather data.
+  * Full documentation here: [application.go](application.go)
+  * Example short-lived process: [examples/short-lived-process/main.go](examples/short-lived-process/main.go)
+
+* Error metrics are no longer created when `ErrorCollector.Enabled = false`.
+
+* Added support for [github.com/mgutz/logxi](github.com/mgutz/logxi).  See
+  [_integrations/nrlogxi/v1/nrlogxi.go](_integrations/nrlogxi/v1/nrlogxi.go).
+
+* Fixed bug where Transaction Trace thresholds based upon Apdex were not being
+  applied to background transactions.
+
+## 1.1.0
+
+* Added support for Transaction Traces.
+
+* Stack trace filenames have been shortened: Any thing preceding the first
+  `/src/` is now removed.
+
+## 1.0.0
+
+* Removed `BetaToken` from the `Config` structure.
+
+* Breaking Datastore Change:  `datastore` package contents moved to top level
+  `newrelic` package.  `datastore.MySQL` has become `newrelic.DatastoreMySQL`.
+
+* Breaking Attributes Change:  `attributes` package contents moved to top
+  level `newrelic` package.  `attributes.ResponseCode` has become
+  `newrelic.AttributeResponseCode`.  Some attribute name constants have been
+  shortened.
+
+* Added "runtime.NumCPU" to the environment tab.  Thanks sergeylanzman for the
+  contribution.
+
+* Prefixed the environment tab values "Compiler", "GOARCH", "GOOS", and
+  "Version" with "runtime.".
+
+## 0.8.0
+
+* Breaking Segments API Changes:  The segments API has been rewritten with the
+  goal of being easier to use and to avoid nil Transaction checks.  See:
+
+  * [segments.go](segments.go)
+  * [examples/server/main.go](examples/server/main.go)
+  * [GUIDE.md#segments](GUIDE.md#segments)
+
+* Updated LICENSE.txt with contribution information.
+
+## 0.7.1
+
+* Fixed a bug causing the `Config` to fail to serialize into JSON when the
+  `Transport` field was populated.
+
+## 0.7.0
+
+* Eliminated `api`, `version`, and `log` packages.  `Version`, `Config`,
+  `Application`, and `Transaction` now live in the top level `newrelic` package.
+  If you imported the  `attributes` or `datastore` packages then you will need
+  to remove `api` from the import path.
+
+* Breaking Logging Changes
+
+Logging is no longer controlled though a single global.  Instead, logging is
+configured on a per-application basis with the new `Config.Logger` field.  The
+logger is an interface described in [log.go](log.go).  See
+[GUIDE.md#logging](GUIDE.md#logging).
+
+## 0.6.1
+
+* No longer create "GC/System/Pauses" metric if no GC pauses happened.
+
+## 0.6.0
+
+* Introduced beta token to support our beta program.
+
+* Rename `Config.Development` to `Config.Enabled` (and change boolean
+  direction).
+
+* Fixed a bug where exclusive time could be incorrect if segments were not
+  ended.
+
+* Fix unit tests broken in 1.6.
+
+* In `Config.Enabled = false` mode, the license must be the proper length or empty.
+
+* Added runtime statistics for CPU/memory usage, garbage collection, and number
+  of goroutines.
+
+## 0.5.0
+
+* Added segment timing methods to `Transaction`.  These methods must only be
+  used in a single goroutine.
+
+* The license length check will not be performed in `Development` mode.
+
+* Rename `SetLogFile` to `SetFile` to reduce redundancy.
+
+* Added `DebugEnabled` logging guard to reduce overhead.
+
+* `Transaction` now implements an `Ignore` method which will prevent
+  any of the transaction's data from being recorded.
+
+* `Transaction` now implements a subset of the interfaces
+  `http.CloseNotifier`, `http.Flusher`, `http.Hijacker`, and `io.ReaderFrom`
+  to match the behavior of its wrapped `http.ResponseWriter`.
+
+* Changed project name from `go-sdk` to `go-agent`.
+
+## 0.4.0
+
+* Queue time support added: if the inbound request contains an
+`"X-Request-Start"` or `"X-Queue-Start"` header with a unix timestamp, the
+agent will report queue time metrics.  Queue time will appear on the
+application overview chart.  The timestamp may fractional seconds,
+milliseconds, or microseconds: the agent will deduce the correct units.

vendor/github.com/newrelic/go-agent/CONTRIBUTING.md

@@ -0,0 +1,9 @@
+# Contributing
+
+You are welcome to send pull requests to us.  By doing so you agree that you are
+granting New Relic a non-exclusive, non-revokable, no-cost license to use the
+code, algorithms, patents, and ideas in that code in our products if we so
+choose.  You also agree the code is provided as-is and you provide no warranties
+as to its fitness or correctness for any purpose.
+
+* [LICENSE.txt](LICENSE.txt)

vendor/github.com/newrelic/go-agent/GUIDE.md

@@ -0,0 +1,325 @@
+# New Relic Go Agent Guide
+
+* [Installation](#installation)
+* [Config and Application](#config-and-application)
+* [Logging](#logging)
+  * [logrus](#logrus)
+* [Transactions](#transactions)
+* [Segments](#segments)
+  * [Datastore Segments](#datastore-segments)
+  * [External Segments](#external-segments)
+* [Attributes](#attributes)
+* [Request Queuing](#request-queuing)
+
+## Installation
+
+Installing the Go Agent is the same as installing any other Go library.  The
+simplest way is to run:
+
+```
+go get github.com/newrelic/go-agent
+```
+
+Then import the `github.com/newrelic/go-agent` package in your application.
+
+## Config and Application
+
+* [config.go](config.go)
+* [application.go](application.go)
+
+In your `main` function or in an `init` block:
+
+```go
+config := newrelic.NewConfig("Your Application Name", "__YOUR_NEW_RELIC_LICENSE_KEY__")
+app, err := newrelic.NewApplication(config)
+```
+
+Find your application in the New Relic UI.  Click on it to see the Go runtime
+tab that shows information about goroutine counts, garbage collection, memory,
+and CPU usage.
+
+If you are working in a development environment or running unit tests, you may
+not want the Go Agent to spawn goroutines or report to New Relic.  You're in
+luck!  Set the config's `Enabled` field to false.  This makes the license key
+optional.
+
+```go
+config := newrelic.NewConfig("Your Application Name", "")
+config.Enabled = false
+app, err := newrelic.NewApplication(config)
+```
+
+## Logging
+
+* [log.go](log.go)
+
+The agent's logging system is designed to be easily extensible.  By default, no
+logging will occur.  To enable logging, assign the `Config.Logger` field to
+something implementing the `Logger` interface.  A basic logging
+implementation is included.
+
+To log at debug level to standard out, set:
+
+```go
+config.Logger = newrelic.NewDebugLogger(os.Stdout)
+```
+
+To log at info level to a file, set:
+
+```go
+w, err := os.OpenFile("my_log_file", os.O_CREATE|os.O_APPEND|os.O_WRONLY, 0644)
+if nil == err {
+  config.Logger = newrelic.NewLogger(w)
+}
+```
+
+### logrus
+
+* [_integrations/nrlogrus/nrlogrus.go](_integrations/nrlogrus/nrlogrus.go)
+
+If you are using `logrus` and would like to send the agent's log messages to its
+standard logger, import the
+`github.com/newrelic/go-agent/_integrations/nrlogrus` package, then set:
+
+```go
+config.Logger = nrlogrus.StandardLogger()
+```
+
+## Transactions
+
+* [transaction.go](transaction.go)
+* [More info on Transactions](https://docs.newrelic.com/docs/apm/applications-menu/monitoring/transactions-page)
+
+Transactions time requests and background tasks.  Each transaction should only
+be used in a single goroutine.  Start a new transaction when you spawn a new
+goroutine.
+
+The simplest way to create transactions is to use
+`Application.StartTransaction` and `Transaction.End`.
+
+```go
+txn := app.StartTransaction("transactionName", responseWriter, request)
+defer txn.End()
+```
+
+The response writer and request parameters are optional.  Leave them `nil` to
+instrument a background task.
+
+```go
+txn := app.StartTransaction("backgroundTask", nil, nil)
+defer txn.End()
+```
+
+The transaction has helpful methods like `NoticeError` and `SetName`.
+See more in [transaction.go](transaction.go).
+
+If you are using the `http` standard library package, use `WrapHandle` and
+`WrapHandleFunc`.  These wrappers automatically start and end transactions with
+the request and response writer.  See [instrumentation.go](instrumentation.go).
+
+```go
+http.HandleFunc(newrelic.WrapHandleFunc(app, "/users", usersHandler))
+```
+
+To access the transaction in your handler, use type assertion on the response
+writer passed to the handler.
+
+```go
+func myHandler(w http.ResponseWriter, r *http.Request) {
+	if txn, ok := w.(newrelic.Transaction); ok {
+		txn.NoticeError(errors.New("my error message"))
+	}
+}
+```
+
+## Segments
+
+* [segments.go](segments.go)
+
+Find out where the time in your transactions is being spent!  Each transaction
+should only track segments in a single goroutine.
+
+`Segment` is used to instrument functions, methods, and blocks of code. A
+segment begins when its `StartTime` field is populated, and finishes when its
+`End` method is called.
+
+```go
+segment := newrelic.Segment{}
+segment.Name = "mySegmentName"
+segment.StartTime = newrelic.StartSegmentNow(txn)
+// ... code you want to time here ...
+segment.End()
+```
+
+`StartSegment` is a convenient helper.  It creates a segment and starts it:
+
+```go
+segment := newrelic.StartSegment(txn, "mySegmentName")
+// ... code you want to time here ...
+segment.End()
+```
+
+Timing a function is easy using `StartSegment` and `defer`.  Just add the
+following line to the beginning of that function:
+
+```go
+defer newrelic.StartSegment(txn, "mySegmentName").End()
+```
+
+Segments may be nested.  The segment being ended must be the most recently
+started segment.
+
+```go
+s1 := newrelic.StartSegment(txn, "outerSegment")
+s2 := newrelic.StartSegment(txn, "innerSegment")
+// s2 must be ended before s1
+s2.End()
+s1.End()
+```
+
+A zero value segment may safely be ended.  Therefore, the following code
+is safe even if the conditional fails:
+
+```go
+var s newrelic.Segment
+if txn, ok := w.(newrelic.Transaction); ok {
+	s.StartTime = newrelic.StartSegmentNow(txn),
+}
+// ... code you wish to time here ...
+s.End()
+```
+
+### Datastore Segments
+
+Datastore segments appear in the transaction "Breakdown table" and in the
+"Databases" tab.
+
+* [datastore.go](datastore.go)
+* [More info on Databases tab](https://docs.newrelic.com/docs/apm/applications-menu/monitoring/databases-slow-queries-page)
+
+Datastore segments are instrumented using `DatastoreSegment`.  Just like basic
+segments, datastore segments begin when the `StartTime` field is populated and
+finish when the `End` method is called.  Here is an example:
+
+```go
+s := newrelic.DatastoreSegment{
+	// Product is the datastore type.  See the constants in datastore.go.
+	Product: newrelic.DatastoreMySQL,
+	// Collection is the table or group.
+	Collection: "my_table",
+	// Operation is the relevant action, e.g. "SELECT" or "GET".
+	Operation: "SELECT",
+}
+s.StartTime = newrelic.StartSegmentNow(txn)
+// ... make the datastore call
+s.End()
+```
+
+This may be combined into a single line when instrumenting a datastore call
+that spans an entire function call:
+
+```go
+defer newrelic.DatastoreSegment{
+	StartTime:  newrelic.StartSegmentNow(txn),
+	Product:    newrelic.DatastoreMySQL,
+	Collection: "my_table",
+	Operation:  "SELECT",
+}.End()
+```
+
+### External Segments
+
+External segments appear in the transaction "Breakdown table" and in the
+"External services" tab.  
+
+* [More info on External Services tab](https://docs.newrelic.com/docs/apm/applications-menu/monitoring/external-services-page)
+
+External segments are instrumented using `ExternalSegment`.  Populate either the
+`URL` or `Request` field to indicate the endpoint.  Here is an example:
+
+```go
+func external(txn newrelic.Transaction, url string) (*http.Response, error) {
+	defer newrelic.ExternalSegment{
+		StartTime: newrelic.StartSegmentNow(txn),
+		URL:   url,
+	}.End()
+
+	return http.Get(url)
+}
+```
+
+We recommend using the `Request` and `Response` fields since they provide more
+information about the external call.  The `StartExternalSegment` helper is
+useful when the request is available.  This function may be modified in the
+future to add headers that will trace activity between applications that are
+instrumented by New Relic.
+
+```go
+func external(txn newrelic.Transaction, req *http.Request) (*http.Response, error) {
+	s := newrelic.StartExternalSegment(txn, req)
+	response, err := http.DefaultClient.Do(req)
+	s.Response = response
+	s.End()
+	return response, err
+}
+```
+
+`NewRoundTripper` is another useful helper.  As with all segments, the round
+tripper returned **must** only be used in the same goroutine as the transaction.
+
+```go
+client := &http.Client{}
+client.Transport = newrelic.NewRoundTripper(txn, nil)
+resp, err := client.Get("http://example.com/")
+```
+
+## Attributes
+
+Attributes add context to errors and allow you to filter performance data
+in Insights.
+
+You may add them using the `Transaction.AddAttribute` method.
+
+```go
+txn.AddAttribute("key", "value")
+txn.AddAttribute("product", "widget")
+txn.AddAttribute("price", 19.99)
+txn.AddAttribute("importantCustomer", true)
+```
+
+* [More info on Custom Attributes](https://docs.newrelic.com/docs/insights/new-relic-insights/decorating-events/insights-custom-attributes)
+
+Some attributes are recorded automatically.  These are called agent attributes.
+They are listed here:
+
+* [attributes.go](attributes.go)
+
+To disable one of these agents attributes, `AttributeResponseCode` for
+example, modify the config like this:
+
+```go
+config.Attributes.Exclude = append(config.Attributes.Exclude, newrelic.AttributeResponseCode)
+```
+
+* [More info on Agent Attributes](https://docs.newrelic.com/docs/agents/manage-apm-agents/agent-metrics/agent-attributes)
+
+## Custom Events
+
+You may track arbitrary events using custom Insights events.
+
+```go
+app.RecordCustomEvent("MyEventType", map[string]interface{}{
+	"myString": "hello",
+	"myFloat":  0.603,
+	"myInt":    123,
+	"myBool":   true,
+})
+```
+
+## Request Queuing
+
+If you are running a load balancer or reverse web proxy then you may configure
+it to add a `X-Queue-Start` header with a Unix timestamp.  This will create a
+band on the application overview chart showing queue time.
+
+* [More info on Request Queuing](https://docs.newrelic.com/docs/apm/applications-menu/features/request-queuing-tracking-front-end-time)

vendor/github.com/newrelic/go-agent/LICENSE.txt

@@ -0,0 +1,50 @@
+This product includes source derived from 'go' by The Go Authors, distributed
+under the following BSD license:
+
+	https://github.com/golang/go/blob/master/LICENSE
+
+-------------------------------------------------------------------------------
+
+All components of this product are Copyright (c) 2016 New Relic, Inc.  All
+rights reserved.
+
+Certain inventions disclosed in this file may be claimed within patents owned or
+patent applications filed by New Relic, Inc. or third parties.
+
+Subject to the terms of this notice, New Relic grants you a nonexclusive,
+nontransferable license, without the right to sublicense, to (a) install and
+execute one copy of these files on any number of workstations owned or
+controlled by you and (b) distribute verbatim copies of these files to third
+parties.  You may install, execute, and distribute these files and their
+contents only in conjunction with your direct use of New Relic’s services.
+These files and their contents shall not be used in conjunction with any other
+product or software, including but not limited to those that may compete with
+any New Relic product, feature, or software.  As a condition to the foregoing
+grant, you must provide this notice along with each copy you distribute and you
+must not remove, alter, or obscure this notice.  In the event you submit or
+provide any feedback, code, pull requests, or suggestions to New Relic you
+hereby grant New Relic a worldwide, non-exclusive, irrevocable, transferrable,
+fully paid-up license to use the code, algorithms, patents, and ideas therein in
+our products.
+
+All other use, reproduction, modification, distribution, or other exploitation
+of these files is strictly prohibited, except as may be set forth in a separate
+written license agreement between you and New Relic.  The terms of any such
+license agreement will control over this notice.  The license stated above will
+be automatically terminated and revoked if you exceed its scope or violate any
+of the terms of this notice.
+
+This License does not grant permission to use the trade names, trademarks,
+service marks, or product names of New Relic, except as required for reasonable
+and customary use in describing the origin of this file and reproducing the
+content of this notice.  You may not mark or brand this file with any trade
+name, trademarks, service marks, or product names other than the original brand
+(if any) provided by New Relic.
+
+Unless otherwise expressly agreed by New Relic in a separate written license
+agreement, these files are provided AS IS, WITHOUT WARRANTY OF ANY KIND,
+including without any implied warranties of MERCHANTABILITY, FITNESS FOR A
+PARTICULAR PURPOSE, TITLE, or NON-INFRINGEMENT.  As a condition to your use of
+these files, you are solely responsible for such use. New Relic will have no
+liability to you for direct, indirect, consequential, incidental, special, or
+punitive damages or for lost profits or data.

vendor/github.com/newrelic/go-agent/README.md

@@ -0,0 +1,157 @@
+# New Relic Go Agent
+
+## Description
+
+The New Relic Go Agent allows you to monitor your Go applications with New
+Relic.  It helps you track transactions, outbound requests, database calls, and
+other parts of your Go application's behavior and provides a running overview of
+garbage collection, goroutine activity, and memory use.
+
+## Requirements
+
+Go 1.3+ is required, due to the use of http.Client's Timeout field.
+
+Linux, OS X, and Windows (Vista, Server 2008 and later) are supported.
+
+## Getting Started
+
+Here are the basic steps to instrumenting your application.  For more
+information, see [GUIDE.md](GUIDE.md).
+
+#### Step 0: Installation
+
+Installing the Go Agent is the same as installing any other Go library.  The
+simplest way is to run:
+
+```
+go get github.com/newrelic/go-agent
+```
+
+Then import the `github.com/newrelic/go-agent` package in your application.
+
+#### Step 1: Create a Config and an Application
+
+In your `main` function or an `init` block:
+
+```go
+config := newrelic.NewConfig("Your Application Name", "__YOUR_NEW_RELIC_LICENSE_KEY__")
+app, err := newrelic.NewApplication(config)
+```
+
+[more info](GUIDE.md#config-and-application), [application.go](application.go),
+[config.go](config.go)
+
+#### Step 2: Add Transactions
+
+Transactions time requests and background tasks.  Use `WrapHandle` and
+`WrapHandleFunc` to create transactions for requests handled by the `http`
+standard library package.
+
+```go
+http.HandleFunc(newrelic.WrapHandleFunc(app, "/users", usersHandler))
+```
+
+Alternatively, create transactions directly using the application's
+`StartTransaction` method:
+
+```go
+txn := app.StartTransaction("myTxn", optionalResponseWriter, optionalRequest)
+defer txn.End()
+```
+
+[more info](GUIDE.md#transactions), [transaction.go](transaction.go)
+
+#### Step 3: Instrument Segments
+
+Segments show you where time in your transactions is being spent.  At the
+beginning of important functions, add:
+
+```go
+defer newrelic.StartSegment(txn, "mySegmentName").End()
+```
+
+[more info](GUIDE.md#segments), [segments.go](segments.go)
+
+## Runnable Example
+
+[examples/server/main.go](./examples/server/main.go) is an example that will appear as "My Go
+Application" in your New Relic applications list.  To run it:
+
+```
+env NEW_RELIC_LICENSE_KEY=__YOUR_NEW_RELIC_LICENSE_KEY__LICENSE__ \
+    go run examples/server/main.go
+```
+
+Some endpoints exposed are [http://localhost:8000/](http://localhost:8000/)
+and [http://localhost:8000/notice_error](http://localhost:8000/notice_error)
+
+
+## Basic Example
+
+Before Instrumentation
+
+```go
+package main
+
+import (
+	"io"
+	"net/http"
+)
+
+func helloHandler(w http.ResponseWriter, r *http.Request) {
+	io.WriteString(w, "hello, world")
+}
+
+func main() {
+	http.HandleFunc("/", helloHandler)
+	http.ListenAndServe(":8000", nil)
+}
+```
+
+After Instrumentation
+
+```go
+package main
+
+import (
+	"fmt"
+	"io"
+	"net/http"
+	"os"
+
+	"github.com/newrelic/go-agent"
+)
+
+func helloHandler(w http.ResponseWriter, r *http.Request) {
+	io.WriteString(w, "hello, world")
+}
+
+func main() {
+	// Create a config.  You need to provide the desired application name
+	// and your New Relic license key.
+	cfg := newrelic.NewConfig("My Go Application", "__YOUR_NEW_RELIC_LICENSE_KEY__")
+
+	// Create an application.  This represents an application in the New
+	// Relic UI.
+	app, err := newrelic.NewApplication(cfg)
+	if err != nil {
+		fmt.Println(err)
+		os.Exit(1)
+	}
+
+	// Wrap helloHandler.  The performance of this handler will be recorded.
+	http.HandleFunc(newrelic.WrapHandleFunc(app, "/", helloHandler))
+	http.ListenAndServe(":8000", nil)
+}
+```
+
+## Support
+
+You can find more detailed documentation [in the guide](GUIDE.md).
+
+If you can't find what you're looking for there, reach out to us on our [support
+site](http://support.newrelic.com/) or our [community
+forum](http://forum.newrelic.com) and we'll be happy to help you.
+
+Find a bug?  Contact us via [support.newrelic.com](http://support.newrelic.com/),
+or email support@newrelic.com.

vendor/github.com/newrelic/go-agent/application.go

@@ -0,0 +1,58 @@
+package newrelic
+
+import (
+	"net/http"
+	"time"
+)
+
+// Application represents your application.
+type Application interface {
+	// StartTransaction begins a Transaction.
+	// * The Transaction should only be used in a single goroutine.
+	// * This method never returns nil.
+	// * If an http.Request is provided then the Transaction is considered
+	//   a web transaction.
+	// * If an http.ResponseWriter is provided then the Transaction can be
+	//   used in its place.  This allows instrumentation of the response
+	//   code and response headers.
+	StartTransaction(name string, w http.ResponseWriter, r *http.Request) Transaction
+
+	// RecordCustomEvent adds a custom event to the application.  This
+	// feature is incompatible with high security mode.
+	//
+	// eventType must consist of alphanumeric characters, underscores, and
+	// colons, and must contain fewer than 255 bytes.
+	//
+	// Each value in the params map must be a number, string, or boolean.
+	// Keys must be less than 255 bytes.  The params map may not contain
+	// more than 64 attributes.  For more information, and a set of
+	// restricted keywords, see:
+	//
+	// https://docs.newrelic.com/docs/insights/new-relic-insights/adding-querying-data/inserting-custom-events-new-relic-apm-agents
+	RecordCustomEvent(eventType string, params map[string]interface{}) error
+
+	// WaitForConnection blocks until the application is connected, is
+	// incapable of being connected, or the timeout has been reached.  This
+	// method is useful for short-lived processes since the application will
+	// not gather data until it is connected.  nil is returned if the
+	// application is connected successfully.
+	WaitForConnection(timeout time.Duration) error
+
+	// Shutdown flushes data to New Relic's servers and stops all
+	// agent-related goroutines managing this application.  After Shutdown
+	// is called, the application is disabled and no more data will be
+	// collected.  This method will block until all final data is sent to
+	// New Relic or the timeout has elapsed.
+	Shutdown(timeout time.Duration)
+}
+
+// NewApplication creates an Application and spawns goroutines to manage the
+// aggregation and harvesting of data.  On success, a non-nil Application and a
+// nil error are returned. On failure, a nil Application and a non-nil error
+// are returned.
+//
+// Applications do not share global state (other than the shared log.Logger).
+// Therefore, it is safe to create multiple applications.
+func NewApplication(c Config) (Application, error) {
+	return newApp(c)
+}

vendor/github.com/newrelic/go-agent/attributes.go

@@ -0,0 +1,42 @@
+package newrelic
+
+// This file contains the names of the automatically captured attributes.
+// Attributes are key value pairs attached to transaction events, error events,
+// and traced errors.  You may add your own attributes using the
+// Transaction.AddAttribute method (see transaction.go).
+//
+// These attribute names are exposed here to facilitate configuration.
+//
+// For more information, see:
+// https://docs.newrelic.com/docs/agents/manage-apm-agents/agent-metrics/agent-attributes
+
+// Attributes destined for Transaction Events and Errors:
+const (
+	// AttributeResponseCode is the response status code for a web request.
+	AttributeResponseCode = "httpResponseCode"
+	// AttributeRequestMethod is the request's method.
+	AttributeRequestMethod = "request.method"
+	// AttributeRequestAccept is the request's "Accept" header.
+	AttributeRequestAccept = "request.headers.accept"
+	// AttributeRequestContentType is the request's "Content-Type" header.
+	AttributeRequestContentType = "request.headers.contentType"
+	// AttributeRequestContentLength is the request's "Content-Length" header.
+	AttributeRequestContentLength = "request.headers.contentLength"
+	// AttributeRequestHost is the request's "Host" header.
+	AttributeRequestHost = "request.headers.host"
+	// AttributeResponseContentType is the response "Content-Type" header.
+	AttributeResponseContentType = "response.headers.contentType"
+	// AttributeResponseContentLength is the response "Content-Length" header.
+	AttributeResponseContentLength = "response.headers.contentLength"
+	// AttributeHostDisplayName contains the value of Config.HostDisplayName.
+	AttributeHostDisplayName = "host.displayName"
+)
+
+// Attributes destined for Errors:
+const (
+	// AttributeRequestUserAgent is the request's "User-Agent" header.
+	AttributeRequestUserAgent = "request.headers.User-Agent"
+	// AttributeRequestReferer is the request's "Referer" header.  Query
+	// string parameters are removed.
+	AttributeRequestReferer = "request.headers.referer"
+)

vendor/github.com/newrelic/go-agent/config.go

@@ -0,0 +1,257 @@
+package newrelic
+
+import (
+	"errors"
+	"fmt"
+	"net/http"
+	"strings"
+	"time"
+)
+
+// Config contains Application and Transaction behavior settings.
+// Use NewConfig to create a Config with proper defaults.
+type Config struct {
+	// AppName is used by New Relic to link data across servers.
+	//
+	// https://docs.newrelic.com/docs/apm/new-relic-apm/installation-configuration/naming-your-application
+	AppName string
+
+	// License is your New Relic license key.
+	//
+	// https://docs.newrelic.com/docs/accounts-partnerships/accounts/account-setup/license-key
+	License string
+
+	// Logger controls go-agent logging.  See log.go.
+	Logger Logger
+
+	// Enabled determines whether the agent will communicate with the New
+	// Relic servers and spawn goroutines.  Setting this to be false can be
+	// useful in testing and staging situations.
+	Enabled bool
+
+	// Labels are key value pairs used to roll up applications into specific
+	// categories.
+	//
+	// https://docs.newrelic.com/docs/apm/new-relic-apm/maintenance/labels-categories-organizing-your-apps-servers
+	Labels map[string]string
+
+	// HighSecurity guarantees that certain agent settings can not be made
+	// more permissive.  This setting must match the corresponding account
+	// setting in the New Relic UI.
+	//
+	// https://docs.newrelic.com/docs/accounts-partnerships/accounts/security/high-security
+	HighSecurity bool
+
+	// CustomInsightsEvents controls the behavior of
+	// Application.RecordCustomEvent.
+	//
+	// https://docs.newrelic.com/docs/insights/new-relic-insights/adding-querying-data/inserting-custom-events-new-relic-apm-agents
+	CustomInsightsEvents struct {
+		// Enabled controls whether RecordCustomEvent will collect
+		// custom analytics events.  High security mode overrides this
+		// setting.
+		Enabled bool
+	}
+
+	// TransactionEvents controls the behavior of transaction analytics
+	// events.
+	TransactionEvents struct {
+		// Enabled controls whether transaction events are captured.
+		Enabled bool
+		// Attributes controls the attributes included with transaction
+		// events.
+		Attributes AttributeDestinationConfig
+	}
+
+	// ErrorCollector controls the capture of errors.
+	ErrorCollector struct {
+		// Enabled controls whether errors are captured.  This setting
+		// affects both traced errors and error analytics events.
+		Enabled bool
+		// CaptureEvents controls whether error analytics events are
+		// captured.
+		CaptureEvents bool
+		// IgnoreStatusCodes controls which http response codes are
+		// automatically turned into errors.  By default, response codes
+		// greater than or equal to 400, with the exception of 404, are
+		// turned into errors.
+		IgnoreStatusCodes []int
+		// Attributes controls the attributes included with errors.
+		Attributes AttributeDestinationConfig
+	}
+
+	// TransactionTracer controls the capture of transaction traces.
+	TransactionTracer struct {
+		// Enabled controls whether transaction traces are captured.
+		Enabled bool
+		// Threshold controls whether a transaction trace will be
+		// considered for capture.  Of the traces exceeding the
+		// threshold, the slowest trace every minute is captured.
+		Threshold struct {
+			// If IsApdexFailing is true then the trace threshold is
+			// four times the apdex threshold.
+			IsApdexFailing bool
+			// If IsApdexFailing is false then this field is the
+			// threshold, otherwise it is ignored.
+			Duration time.Duration
+		}
+		// SegmentThreshold is the threshold at which segments will be
+		// added to the trace.  Lowering this setting may increase
+		// overhead.
+		SegmentThreshold time.Duration
+		// StackTraceThreshold is the threshold at which segments will
+		// be given a stack trace in the transaction trace.  Lowering
+		// this setting will drastically increase overhead.
+		StackTraceThreshold time.Duration
+		// Attributes controls the attributes included with transaction
+		// traces.
+		Attributes AttributeDestinationConfig
+	}
+
+	// HostDisplayName gives this server a recognizable name in the New
+	// Relic UI.  This is an optional setting.
+	HostDisplayName string
+
+	// UseTLS controls whether http or https is used to send data to New
+	// Relic servers.
+	UseTLS bool
+
+	// Transport customizes http.Client communication with New Relic
+	// servers.  This may be used to configure a proxy.
+	Transport http.RoundTripper
+
+	// Utilization controls the detection and gathering of system
+	// information.
+	Utilization struct {
+		// DetectAWS controls whether the Application attempts to detect
+		// AWS.
+		DetectAWS bool
+		// DetectDocker controls whether the Application attempts to
+		// detect Docker.
+		DetectDocker bool
+
+		// These settings provide system information when custom values
+		// are required.
+		LogicalProcessors int
+		TotalRAMMIB       int
+		BillingHostname   string
+	}
+
+	// DatastoreTracer controls behavior relating to datastore segments.
+	DatastoreTracer struct {
+		InstanceReporting struct {
+			Enabled bool
+		}
+		DatabaseNameReporting struct {
+			Enabled bool
+		}
+		QueryParameters struct {
+			Enabled bool
+		}
+		// SlowQuery controls the capture of slow query traces.  Slow
+		// query traces show you instances of your slowest datastore
+		// segments.
+		SlowQuery struct {
+			Enabled   bool
+			Threshold time.Duration
+		}
+	}
+
+	// Attributes controls the attributes included with errors and
+	// transaction events.
+	Attributes AttributeDestinationConfig
+
+	// RuntimeSampler controls the collection of runtime statistics like
+	// CPU/Memory usage, goroutine count, and GC pauses.
+	RuntimeSampler struct {
+		// Enabled controls whether runtime statistics are captured.
+		Enabled bool
+	}
+}
+
+// AttributeDestinationConfig controls the attributes included with errors and
+// transaction events.
+type AttributeDestinationConfig struct {
+	Enabled bool
+	Include []string
+	Exclude []string
+}
+
+// NewConfig creates an Config populated with the given appname, license,
+// and expected default values.
+func NewConfig(appname, license string) Config {
+	c := Config{}
+
+	c.AppName = appname
+	c.License = license
+	c.Enabled = true
+	c.Labels = make(map[string]string)
+	c.CustomInsightsEvents.Enabled = true
+	c.TransactionEvents.Enabled = true
+	c.TransactionEvents.Attributes.Enabled = true
+	c.HighSecurity = false
+	c.UseTLS = true
+	c.ErrorCollector.Enabled = true
+	c.ErrorCollector.CaptureEvents = true
+	c.ErrorCollector.IgnoreStatusCodes = []int{
+		http.StatusNotFound, // 404
+	}
+	c.ErrorCollector.Attributes.Enabled = true
+	c.Utilization.DetectAWS = true
+	c.Utilization.DetectDocker = true
+	c.Attributes.Enabled = true
+	c.RuntimeSampler.Enabled = true
+
+	c.TransactionTracer.Enabled = true
+	c.TransactionTracer.Threshold.IsApdexFailing = true
+	c.TransactionTracer.Threshold.Duration = 500 * time.Millisecond
+	c.TransactionTracer.SegmentThreshold = 2 * time.Millisecond
+	c.TransactionTracer.StackTraceThreshold = 500 * time.Millisecond
+	c.TransactionTracer.Attributes.Enabled = true
+
+	c.DatastoreTracer.InstanceReporting.Enabled = true
+	c.DatastoreTracer.DatabaseNameReporting.Enabled = true
+	c.DatastoreTracer.QueryParameters.Enabled = true
+	c.DatastoreTracer.SlowQuery.Enabled = true
+	c.DatastoreTracer.SlowQuery.Threshold = 10 * time.Millisecond
+
+	return c
+}
+
+const (
+	licenseLength = 40
+	appNameLimit  = 3
+)
+
+// The following errors will be returned if your Config fails to validate.
+var (
+	errLicenseLen      = fmt.Errorf("license length is not %d", licenseLength)
+	errHighSecurityTLS = errors.New("high security requires TLS")
+	errAppNameMissing  = errors.New("AppName required")
+	errAppNameLimit    = fmt.Errorf("max of %d rollup application names", appNameLimit)
+)
+
+// Validate checks the config for improper fields.  If the config is invalid,
+// newrelic.NewApplication returns an error.
+func (c Config) Validate() error {
+	if c.Enabled {
+		if len(c.License) != licenseLength {
+			return errLicenseLen
+		}
+	} else {
+		// The License may be empty when the agent is not enabled.
+		if len(c.License) != licenseLength && len(c.License) != 0 {
+			return errLicenseLen
+		}
+	}
+	if c.HighSecurity && !c.UseTLS {
+		return errHighSecurityTLS
+	}
+	if "" == c.AppName {
+		return errAppNameMissing
+	}
+	if strings.Count(c.AppName, ";") >= appNameLimit {
+		return errAppNameLimit
+	}
+	return nil
+}

vendor/github.com/newrelic/go-agent/datastore.go

@@ -0,0 +1,27 @@
+package newrelic
+
+// DatastoreProduct encourages consistent metrics across New Relic agents.  You
+// may create your own if your datastore is not listed below.
+type DatastoreProduct string
+
+// Datastore names used across New Relic agents:
+const (
+	DatastoreCassandra     DatastoreProduct = "Cassandra"
+	DatastoreDerby                          = "Derby"
+	DatastoreElasticsearch                  = "Elasticsearch"
+	DatastoreFirebird                       = "Firebird"
+	DatastoreIBMDB2                         = "IBMDB2"
+	DatastoreInformix                       = "Informix"
+	DatastoreMemcached                      = "Memcached"
+	DatastoreMongoDB                        = "MongoDB"
+	DatastoreMySQL                          = "MySQL"
+	DatastoreMSSQL                          = "MSSQL"
+	DatastoreOracle                         = "Oracle"
+	DatastorePostgres                       = "Postgres"
+	DatastoreRedis                          = "Redis"
+	DatastoreSolr                           = "Solr"
+	DatastoreSQLite                         = "SQLite"
+	DatastoreCouchDB                        = "CouchDB"
+	DatastoreRiak                           = "Riak"
+	DatastoreVoltDB                         = "VoltDB"
+)

vendor/github.com/newrelic/go-agent/instrumentation.go

@@ -0,0 +1,68 @@
+package newrelic
+
+import "net/http"
+
+// instrumentation.go contains helpers built on the lower level api.
+
+// WrapHandle facilitates instrumentation of handlers registered with an
+// http.ServeMux.  For example, to instrument this code:
+//
+//    http.Handle("/foo", fooHandler)
+//
+// Perform this replacement:
+//
+//    http.Handle(newrelic.WrapHandle(app, "/foo", fooHandler))
+//
+// The Transaction is passed to the handler in place of the original
+// http.ResponseWriter, so it can be accessed using type assertion.
+// For example, to rename the transaction:
+//
+//	// 'w' is the variable name of the http.ResponseWriter.
+//	if txn, ok := w.(newrelic.Transaction); ok {
+//		txn.SetName("other-name")
+//	}
+//
+func WrapHandle(app Application, pattern string, handler http.Handler) (string, http.Handler) {
+	return pattern, http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		txn := app.StartTransaction(pattern, w, r)
+		defer txn.End()
+
+		handler.ServeHTTP(txn, r)
+	})
+}
+
+// WrapHandleFunc serves the same purpose as WrapHandle for functions registered
+// with ServeMux.HandleFunc.
+func WrapHandleFunc(app Application, pattern string, handler func(http.ResponseWriter, *http.Request)) (string, func(http.ResponseWriter, *http.Request)) {
+	p, h := WrapHandle(app, pattern, http.HandlerFunc(handler))
+	return p, func(w http.ResponseWriter, r *http.Request) { h.ServeHTTP(w, r) }
+}
+
+// NewRoundTripper creates an http.RoundTripper to instrument external requests.
+// This RoundTripper must be used in same the goroutine as the other uses of the
+// Transaction's SegmentTracer methods.  http.DefaultTransport is used if an
+// http.RoundTripper is not provided.
+//
+//   client := &http.Client{}
+//   client.Transport = newrelic.NewRoundTripper(txn, nil)
+//   resp, err := client.Get("http://example.com/")
+//
+func NewRoundTripper(txn Transaction, original http.RoundTripper) http.RoundTripper {
+	return roundTripperFunc(func(request *http.Request) (*http.Response, error) {
+		segment := StartExternalSegment(txn, request)
+
+		if nil == original {
+			original = http.DefaultTransport
+		}
+		response, err := original.RoundTrip(request)
+
+		segment.Response = response
+		segment.End()
+
+		return response, err
+	})
+}
+
+type roundTripperFunc func(*http.Request) (*http.Response, error)
+
+func (f roundTripperFunc) RoundTrip(r *http.Request) (*http.Response, error) { return f(r) }

vendor/github.com/newrelic/go-agent/internal/analytics_events.go

@@ -0,0 +1,122 @@
+package internal
+
+import (
+	"bytes"
+	"container/heap"
+
+	"github.com/newrelic/go-agent/internal/jsonx"
+)
+
+// eventStamp allows for uniform random sampling of events.  When an event is
+// created it is given an eventStamp.  Whenever an event pool is full and events
+// need to be dropped, the events with the lowest stamps are dropped.
+type eventStamp float32
+
+func eventStampCmp(a, b eventStamp) bool {
+	return a < b
+}
+
+type analyticsEvent struct {
+	stamp eventStamp
+	jsonWriter
+}
+
+type analyticsEventHeap []analyticsEvent
+
+type analyticsEvents struct {
+	numSeen        int
+	events         analyticsEventHeap
+	failedHarvests int
+}
+
+func (events *analyticsEvents) NumSeen() float64  { return float64(events.numSeen) }
+func (events *analyticsEvents) NumSaved() float64 { return float64(len(events.events)) }
+
+func (h analyticsEventHeap) Len() int           { return len(h) }
+func (h analyticsEventHeap) Less(i, j int) bool { return eventStampCmp(h[i].stamp, h[j].stamp) }
+func (h analyticsEventHeap) Swap(i, j int)      { h[i], h[j] = h[j], h[i] }
+
+// Push and Pop are unused: only heap.Init and heap.Fix are used.
+func (h analyticsEventHeap) Push(x interface{}) {}
+func (h analyticsEventHeap) Pop() interface{}   { return nil }
+
+func newAnalyticsEvents(max int) *analyticsEvents {
+	return &analyticsEvents{
+		numSeen:        0,
+		events:         make(analyticsEventHeap, 0, max),
+		failedHarvests: 0,
+	}
+}
+
+func (events *analyticsEvents) addEvent(e analyticsEvent) {
+	events.numSeen++
+
+	if len(events.events) < cap(events.events) {
+		events.events = append(events.events, e)
+		if len(events.events) == cap(events.events) {
+			// Delay heap initialization so that we can have
+			// deterministic ordering for integration tests (the max
+			// is not being reached).
+			heap.Init(events.events)
+		}
+		return
+	}
+
+	if eventStampCmp(e.stamp, events.events[0].stamp) {
+		return
+	}
+
+	events.events[0] = e
+	heap.Fix(events.events, 0)
+}
+
+func (events *analyticsEvents) mergeFailed(other *analyticsEvents) {
+	fails := other.failedHarvests + 1
+	if fails >= failedEventsAttemptsLimit {
+		return
+	}
+	events.failedHarvests = fails
+	events.Merge(other)
+}
+
+func (events *analyticsEvents) Merge(other *analyticsEvents) {
+	allSeen := events.numSeen + other.numSeen
+
+	for _, e := range other.events {
+		events.addEvent(e)
+	}
+	events.numSeen = allSeen
+}
+
+func (events *analyticsEvents) CollectorJSON(agentRunID string) ([]byte, error) {
+	if 0 == events.numSeen {
+		return nil, nil
+	}
+
+	estimate := 256 * len(events.events)
+	buf := bytes.NewBuffer(make([]byte, 0, estimate))
+
+	buf.WriteByte('[')
+	jsonx.AppendString(buf, agentRunID)
+	buf.WriteByte(',')
+	buf.WriteByte('{')
+	buf.WriteString(`"reservoir_size":`)
+	jsonx.AppendUint(buf, uint64(cap(events.events)))
+	buf.WriteByte(',')
+	buf.WriteString(`"events_seen":`)
+	jsonx.AppendUint(buf, uint64(events.numSeen))
+	buf.WriteByte('}')
+	buf.WriteByte(',')
+	buf.WriteByte('[')
+	for i, e := range events.events {
+		if i > 0 {
+			buf.WriteByte(',')
+		}
+		e.WriteJSON(buf)
+	}
+	buf.WriteByte(']')
+	buf.WriteByte(']')
+
+	return buf.Bytes(), nil
+
+}

vendor/github.com/newrelic/go-agent/internal/apdex.go

@@ -0,0 +1,48 @@
+package internal
+
+import "time"
+
+// ApdexZone is a transaction classification.
+type ApdexZone int
+
+// https://en.wikipedia.org/wiki/Apdex
+const (
+	ApdexNone ApdexZone = iota
+	ApdexSatisfying
+	ApdexTolerating
+	ApdexFailing
+)
+
+// ApdexFailingThreshold calculates the threshold at which the transaction is
+// considered a failure.
+func ApdexFailingThreshold(threshold time.Duration) time.Duration {
+	return 4 * threshold
+}
+
+// CalculateApdexZone calculates the apdex based on the transaction duration and
+// threshold.
+//
+// Note that this does not take into account whether or not the transaction
+// had an error.  That is expected to be done by the caller.
+func CalculateApdexZone(threshold, duration time.Duration) ApdexZone {
+	if duration <= threshold {
+		return ApdexSatisfying
+	}
+	if duration <= ApdexFailingThreshold(threshold) {
+		return ApdexTolerating
+	}
+	return ApdexFailing
+}
+
+func (zone ApdexZone) label() string {
+	switch zone {
+	case ApdexSatisfying:
+		return "S"
+	case ApdexTolerating:
+		return "T"
+	case ApdexFailing:
+		return "F"
+	default:
+		return ""
+	}
+}

vendor/github.com/newrelic/go-agent/internal/attributes.go

@@ -0,0 +1,572 @@
+package internal
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"sort"
+	"strconv"
+	"strings"
+)
+
+// New agent attributes must be added in the following places:
+// * Constants here.
+// * Top level attributes.go file.
+// * agentAttributes
+// * agentAttributeDests
+// * calculateAgentAttributeDests
+// * writeAgentAttributes
+const (
+	responseCode          = "httpResponseCode"
+	requestMethod         = "request.method"
+	requestAccept         = "request.headers.accept"
+	requestContentType    = "request.headers.contentType"
+	requestContentLength  = "request.headers.contentLength"
+	requestHost           = "request.headers.host"
+	responseContentType   = "response.headers.contentType"
+	responseContentLength = "response.headers.contentLength"
+	hostDisplayName       = "host.displayName"
+	requestUserAgent      = "request.headers.User-Agent"
+	requestReferer        = "request.headers.referer"
+)
+
+// https://source.datanerd.us/agents/agent-specs/blob/master/Agent-Attributes-PORTED.md
+
+// AttributeDestinationConfig matches newrelic.AttributeDestinationConfig to
+// avoid circular dependency issues.
+type AttributeDestinationConfig struct {
+	Enabled bool
+	Include []string
+	Exclude []string
+}
+
+type destinationSet int
+
+const (
+	destTxnEvent destinationSet = 1 << iota
+	destError
+	destTxnTrace
+	destBrowser
+)
+
+const (
+	destNone destinationSet = 0
+	// DestAll contains all destinations.
+	DestAll destinationSet = destTxnEvent | destTxnTrace | destError | destBrowser
+)
+
+const (
+	attributeWildcardSuffix = '*'
+)
+
+type attributeModifier struct {
+	match string // This will not contain a trailing '*'.
+	includeExclude
+}
+
+type byMatch []*attributeModifier
+
+func (m byMatch) Len() int           { return len(m) }
+func (m byMatch) Swap(i, j int)      { m[i], m[j] = m[j], m[i] }
+func (m byMatch) Less(i, j int) bool { return m[i].match < m[j].match }
+
+// AttributeConfig is created at application creation and shared between all
+// transactions.
+type AttributeConfig struct {
+	disabledDestinations destinationSet
+	exactMatchModifiers  map[string]*attributeModifier
+	// Once attributeConfig is constructed, wildcardModifiers is sorted in
+	// lexicographical order.  Modifiers appearing later have precedence
+	// over modifiers appearing earlier.
+	wildcardModifiers []*attributeModifier
+	agentDests        agentAttributeDests
+}
+
+type includeExclude struct {
+	include destinationSet
+	exclude destinationSet
+}
+
+func modifierApply(m *attributeModifier, d destinationSet) destinationSet {
+	// Include before exclude, since exclude has priority.
+	d |= m.include
+	d &^= m.exclude
+	return d
+}
+
+func applyAttributeConfig(c *AttributeConfig, key string, d destinationSet) destinationSet {
+	// Important: The wildcard modifiers must be applied before the exact
+	// match modifiers, and the slice must be iterated in a forward
+	// direction.
+	for _, m := range c.wildcardModifiers {
+		if strings.HasPrefix(key, m.match) {
+			d = modifierApply(m, d)
+		}
+	}
+
+	if m, ok := c.exactMatchModifiers[key]; ok {
+		d = modifierApply(m, d)
+	}
+
+	d &^= c.disabledDestinations
+
+	return d
+}
+
+func addModifier(c *AttributeConfig, match string, d includeExclude) {
+	if "" == match {
+		return
+	}
+	exactMatch := true
+	if attributeWildcardSuffix == match[len(match)-1] {
+		exactMatch = false
+		match = match[0 : len(match)-1]
+	}
+	mod := &attributeModifier{
+		match:          match,
+		includeExclude: d,
+	}
+
+	if exactMatch {
+		if m, ok := c.exactMatchModifiers[mod.match]; ok {
+			m.include |= mod.include
+			m.exclude |= mod.exclude
+		} else {
+			c.exactMatchModifiers[mod.match] = mod
+		}
+	} else {
+		for _, m := range c.wildcardModifiers {
+			// Important: Duplicate entries for the same match
+			// string would not work because exclude needs
+			// precedence over include.
+			if m.match == mod.match {
+				m.include |= mod.include
+				m.exclude |= mod.exclude
+				return
+			}
+		}
+		c.wildcardModifiers = append(c.wildcardModifiers, mod)
+	}
+}
+
+func processDest(c *AttributeConfig, dc *AttributeDestinationConfig, d destinationSet) {
+	if !dc.Enabled {
+		c.disabledDestinations |= d
+	}
+	for _, match := range dc.Include {
+		addModifier(c, match, includeExclude{include: d})
+	}
+	for _, match := range dc.Exclude {
+		addModifier(c, match, includeExclude{exclude: d})
+	}
+}
+
+// AttributeConfigInput is used as the input to CreateAttributeConfig:  it
+// transforms newrelic.Config settings into an AttributeConfig.
+type AttributeConfigInput struct {
+	Attributes        AttributeDestinationConfig
+	ErrorCollector    AttributeDestinationConfig
+	TransactionEvents AttributeDestinationConfig
+	browserMonitoring AttributeDestinationConfig
+	TransactionTracer AttributeDestinationConfig
+}
+
+var (
+	sampleAttributeConfigInput = AttributeConfigInput{
+		Attributes:        AttributeDestinationConfig{Enabled: true},
+		ErrorCollector:    AttributeDestinationConfig{Enabled: true},
+		TransactionEvents: AttributeDestinationConfig{Enabled: true},
+		TransactionTracer: AttributeDestinationConfig{Enabled: true},
+	}
+)
+
+// CreateAttributeConfig creates a new AttributeConfig.
+func CreateAttributeConfig(input AttributeConfigInput) *AttributeConfig {
+	c := &AttributeConfig{
+		exactMatchModifiers: make(map[string]*attributeModifier),
+		wildcardModifiers:   make([]*attributeModifier, 0, 64),
+	}
+
+	processDest(c, &input.Attributes, DestAll)
+	processDest(c, &input.ErrorCollector, destError)
+	processDest(c, &input.TransactionEvents, destTxnEvent)
+	processDest(c, &input.TransactionTracer, destTxnTrace)
+	processDest(c, &input.browserMonitoring, destBrowser)
+
+	sort.Sort(byMatch(c.wildcardModifiers))
+
+	c.agentDests = calculateAgentAttributeDests(c)
+
+	return c
+}
+
+type userAttribute struct {
+	value interface{}
+	dests destinationSet
+}
+
+// Attributes are key value pairs attached to the various collected data types.
+type Attributes struct {
+	config *AttributeConfig
+	user   map[string]userAttribute
+	Agent  agentAttributes
+}
+
+type agentAttributes struct {
+	HostDisplayName              string
+	RequestMethod                string
+	RequestAcceptHeader          string
+	RequestContentType           string
+	RequestContentLength         int
+	RequestHeadersHost           string
+	RequestHeadersUserAgent      string
+	RequestHeadersReferer        string
+	ResponseHeadersContentType   string
+	ResponseHeadersContentLength int
+	ResponseCode                 string
+}
+
+type agentAttributeDests struct {
+	HostDisplayName              destinationSet
+	RequestMethod                destinationSet
+	RequestAcceptHeader          destinationSet
+	RequestContentType           destinationSet
+	RequestContentLength         destinationSet
+	RequestHeadersHost           destinationSet
+	RequestHeadersUserAgent      destinationSet
+	RequestHeadersReferer        destinationSet
+	ResponseHeadersContentType   destinationSet
+	ResponseHeadersContentLength destinationSet
+	ResponseCode                 destinationSet
+}
+
+func calculateAgentAttributeDests(c *AttributeConfig) agentAttributeDests {
+	usual := DestAll &^ destBrowser
+	traces := destTxnTrace | destError
+	return agentAttributeDests{
+		HostDisplayName:              applyAttributeConfig(c, hostDisplayName, usual),
+		RequestMethod:                applyAttributeConfig(c, requestMethod, usual),
+		RequestAcceptHeader:          applyAttributeConfig(c, requestAccept, usual),
+		RequestContentType:           applyAttributeConfig(c, requestContentType, usual),
+		RequestContentLength:         applyAttributeConfig(c, requestContentLength, usual),
+		RequestHeadersHost:           applyAttributeConfig(c, requestHost, usual),
+		RequestHeadersUserAgent:      applyAttributeConfig(c, requestUserAgent, traces),
+		RequestHeadersReferer:        applyAttributeConfig(c, requestReferer, traces),
+		ResponseHeadersContentType:   applyAttributeConfig(c, responseContentType, usual),
+		ResponseHeadersContentLength: applyAttributeConfig(c, responseContentLength, usual),
+		ResponseCode:                 applyAttributeConfig(c, responseCode, usual),
+	}
+}
+
+type agentAttributeWriter struct {
+	jsonFieldsWriter
+	d destinationSet
+}
+
+func (w *agentAttributeWriter) writeString(name string, val string, d destinationSet) {
+	if "" != val && 0 != w.d&d {
+		w.stringField(name, truncateStringValueIfLong(val))
+	}
+}
+
+func (w *agentAttributeWriter) writeInt(name string, val int, d destinationSet) {
+	if val >= 0 && 0 != w.d&d {
+		w.intField(name, int64(val))
+	}
+}
+
+func writeAgentAttributes(buf *bytes.Buffer, d destinationSet, values agentAttributes, dests agentAttributeDests) {
+	w := &agentAttributeWriter{
+		jsonFieldsWriter: jsonFieldsWriter{buf: buf},
+		d:                d,
+	}
+	buf.WriteByte('{')
+	w.writeString(hostDisplayName, values.HostDisplayName, dests.HostDisplayName)
+	w.writeString(requestMethod, values.RequestMethod, dests.RequestMethod)
+	w.writeString(requestAccept, values.RequestAcceptHeader, dests.RequestAcceptHeader)
+	w.writeString(requestContentType, values.RequestContentType, dests.RequestContentType)
+	w.writeInt(requestContentLength, values.RequestContentLength, dests.RequestContentLength)
+	w.writeString(requestHost, values.RequestHeadersHost, dests.RequestHeadersHost)
+	w.writeString(requestUserAgent, values.RequestHeadersUserAgent, dests.RequestHeadersUserAgent)
+	w.writeString(requestReferer, values.RequestHeadersReferer, dests.RequestHeadersReferer)
+	w.writeString(responseContentType, values.ResponseHeadersContentType, dests.ResponseHeadersContentType)
+	w.writeInt(responseContentLength, values.ResponseHeadersContentLength, dests.ResponseHeadersContentLength)
+	w.writeString(responseCode, values.ResponseCode, dests.ResponseCode)
+	buf.WriteByte('}')
+}
+
+// NewAttributes creates a new Attributes.
+func NewAttributes(config *AttributeConfig) *Attributes {
+	return &Attributes{
+		config: config,
+		Agent: agentAttributes{
+			RequestContentLength:         -1,
+			ResponseHeadersContentLength: -1,
+		},
+	}
+}
+
+// ErrInvalidAttribute is returned when the value is not valid.
+type ErrInvalidAttribute struct{ typeString string }
+
+func (e ErrInvalidAttribute) Error() string {
+	return fmt.Sprintf("attribute value type %s is invalid", e.typeString)
+}
+
+func valueIsValid(val interface{}) error {
+	switch val.(type) {
+	case string, bool, nil,
+		uint8, uint16, uint32, uint64, int8, int16, int32, int64,
+		float32, float64, uint, int, uintptr:
+		return nil
+	default:
+		return ErrInvalidAttribute{
+			typeString: fmt.Sprintf("%T", val),
+		}
+	}
+}
+
+type invalidAttributeKeyErr struct{ key string }
+
+func (e invalidAttributeKeyErr) Error() string {
+	return fmt.Sprintf("attribute key '%.32s...' exceeds length limit %d",
+		e.key, attributeKeyLengthLimit)
+}
+
+type userAttributeLimitErr struct{ key string }
+
+func (e userAttributeLimitErr) Error() string {
+	return fmt.Sprintf("attribute '%s' discarded: limit of %d reached", e.key,
+		attributeUserLimit)
+}
+
+func validAttributeKey(key string) error {
+	// Attributes whose keys are excessively long are dropped rather than
+	// truncated to avoid worrying about the application of configuration to
+	// truncated values or performing the truncation after configuration.
+	if len(key) > attributeKeyLengthLimit {
+		return invalidAttributeKeyErr{key: key}
+	}
+	return nil
+}
+
+func truncateStringValueIfLong(val string) string {
+	if len(val) > attributeValueLengthLimit {
+		return StringLengthByteLimit(val, attributeValueLengthLimit)
+	}
+	return val
+}
+
+func truncateStringValueIfLongInterface(val interface{}) interface{} {
+	if str, ok := val.(string); ok {
+		val = interface{}(truncateStringValueIfLong(str))
+	}
+	return val
+}
+
+// AddUserAttribute adds a user attribute.
+func AddUserAttribute(a *Attributes, key string, val interface{}, d destinationSet) error {
+	val = truncateStringValueIfLongInterface(val)
+	if err := valueIsValid(val); nil != err {
+		return err
+	}
+	if err := validAttributeKey(key); nil != err {
+		return err
+	}
+	dests := applyAttributeConfig(a.config, key, d)
+	if destNone == dests {
+		return nil
+	}
+	if nil == a.user {
+		a.user = make(map[string]userAttribute)
+	}
+
+	if _, exists := a.user[key]; !exists && len(a.user) >= attributeUserLimit {
+		return userAttributeLimitErr{key}
+	}
+
+	// Note: Duplicates are overridden: last attribute in wins.
+	a.user[key] = userAttribute{
+		value: val,
+		dests: dests,
+	}
+	return nil
+}
+
+func writeAttributeValueJSON(w *jsonFieldsWriter, key string, val interface{}) {
+	switch v := val.(type) {
+	case nil:
+		w.rawField(key, `null`)
+	case string:
+		w.stringField(key, v)
+	case bool:
+		if v {
+			w.rawField(key, `true`)
+		} else {
+			w.rawField(key, `false`)
+		}
+	case uint8:
+		w.intField(key, int64(v))
+	case uint16:
+		w.intField(key, int64(v))
+	case uint32:
+		w.intField(key, int64(v))
+	case uint64:
+		w.intField(key, int64(v))
+	case uint:
+		w.intField(key, int64(v))
+	case uintptr:
+		w.intField(key, int64(v))
+	case int8:
+		w.intField(key, int64(v))
+	case int16:
+		w.intField(key, int64(v))
+	case int32:
+		w.intField(key, int64(v))
+	case int64:
+		w.intField(key, v)
+	case int:
+		w.intField(key, int64(v))
+	case float32:
+		w.floatField(key, float64(v))
+	case float64:
+		w.floatField(key, v)
+	default:
+		w.stringField(key, fmt.Sprintf("%T", v))
+	}
+}
+
+type agentAttributesJSONWriter struct {
+	attributes *Attributes
+	dest       destinationSet
+}
+
+func (w agentAttributesJSONWriter) WriteJSON(buf *bytes.Buffer) {
+	if nil == w.attributes {
+		buf.WriteString("{}")
+		return
+	}
+	writeAgentAttributes(buf, w.dest, w.attributes.Agent, w.attributes.config.agentDests)
+}
+
+func agentAttributesJSON(a *Attributes, buf *bytes.Buffer, d destinationSet) {
+	agentAttributesJSONWriter{
+		attributes: a,
+		dest:       d,
+	}.WriteJSON(buf)
+}
+
+type userAttributesJSONWriter struct {
+	attributes *Attributes
+	dest       destinationSet
+}
+
+func (u userAttributesJSONWriter) WriteJSON(buf *bytes.Buffer) {
+	buf.WriteByte('{')
+	if nil != u.attributes {
+		w := jsonFieldsWriter{buf: buf}
+		for name, atr := range u.attributes.user {
+			if 0 != atr.dests&u.dest {
+				writeAttributeValueJSON(&w, name, atr.value)
+			}
+		}
+	}
+	buf.WriteByte('}')
+}
+
+func userAttributesJSON(a *Attributes, buf *bytes.Buffer, d destinationSet) {
+	userAttributesJSONWriter{
+		attributes: a,
+		dest:       d,
+	}.WriteJSON(buf)
+}
+
+func userAttributesStringJSON(a *Attributes, d destinationSet) JSONString {
+	if nil == a {
+		return JSONString("{}")
+	}
+	estimate := len(a.user) * 128
+	buf := bytes.NewBuffer(make([]byte, 0, estimate))
+	userAttributesJSON(a, buf, d)
+	bs := buf.Bytes()
+	return JSONString(bs)
+}
+
+func agentAttributesStringJSON(a *Attributes, d destinationSet) JSONString {
+	if nil == a {
+		return JSONString("{}")
+	}
+	estimate := 1024
+	buf := bytes.NewBuffer(make([]byte, 0, estimate))
+	agentAttributesJSON(a, buf, d)
+	return JSONString(buf.Bytes())
+}
+
+func getUserAttributes(a *Attributes, d destinationSet) map[string]interface{} {
+	v := make(map[string]interface{})
+	json.Unmarshal([]byte(userAttributesStringJSON(a, d)), &v)
+	return v
+}
+
+func getAgentAttributes(a *Attributes, d destinationSet) map[string]interface{} {
+	v := make(map[string]interface{})
+	json.Unmarshal([]byte(agentAttributesStringJSON(a, d)), &v)
+	return v
+}
+
+// RequestAgentAttributes gathers agent attributes out of the request.
+func RequestAgentAttributes(a *Attributes, r *http.Request) {
+	a.Agent.RequestMethod = r.Method
+
+	h := r.Header
+	if nil == h {
+		return
+	}
+	a.Agent.RequestAcceptHeader = h.Get("Accept")
+	a.Agent.RequestContentType = h.Get("Content-Type")
+	a.Agent.RequestHeadersHost = h.Get("Host")
+	a.Agent.RequestHeadersUserAgent = h.Get("User-Agent")
+	a.Agent.RequestHeadersReferer = SafeURLFromString(h.Get("Referer"))
+
+	if cl := h.Get("Content-Length"); "" != cl {
+		if x, err := strconv.Atoi(cl); nil == err {
+			a.Agent.RequestContentLength = x
+		}
+	}
+}
+
+// ResponseHeaderAttributes gather agent attributes from the response headers.
+func ResponseHeaderAttributes(a *Attributes, h http.Header) {
+	if nil == h {
+		return
+	}
+	a.Agent.ResponseHeadersContentType = h.Get("Content-Type")
+	if val := h.Get("Content-Length"); "" != val {
+		if x, err := strconv.Atoi(val); nil == err {
+			a.Agent.ResponseHeadersContentLength = x
+		}
+	}
+}
+
+var (
+	// statusCodeLookup avoids a strconv.Itoa call.
+	statusCodeLookup = map[int]string{
+		100: "100", 101: "101",
+		200: "200", 201: "201", 202: "202", 203: "203", 204: "204", 205: "205", 206: "206",
+		300: "300", 301: "301", 302: "302", 303: "303", 304: "304", 305: "305", 307: "307",
+		400: "400", 401: "401", 402: "402", 403: "403", 404: "404", 405: "405", 406: "406",
+		407: "407", 408: "408", 409: "409", 410: "410", 411: "411", 412: "412", 413: "413",
+		414: "414", 415: "415", 416: "416", 417: "417", 418: "418", 428: "428", 429: "429",
+		431: "431", 451: "451",
+		500: "500", 501: "501", 502: "502", 503: "503", 504: "504", 505: "505", 511: "511",
+	}
+)
+
+// ResponseCodeAttribute sets the response code agent attribute.
+func ResponseCodeAttribute(a *Attributes, code int) {
+	a.Agent.ResponseCode = statusCodeLookup[code]
+	if a.Agent.ResponseCode == "" {
+		a.Agent.ResponseCode = strconv.Itoa(code)
+	}
+}

vendor/github.com/newrelic/go-agent/internal/collector.go

@@ -0,0 +1,267 @@
+package internal
+
+import (
+	"bytes"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io/ioutil"
+	"net/http"
+	"net/url"
+
+	"github.com/newrelic/go-agent/internal/logger"
+)
+
+const (
+	procotolVersion = "14"
+	userAgentPrefix = "NewRelic-Go-Agent/"
+
+	// Methods used in collector communication.
+	cmdRedirect     = "get_redirect_host"
+	cmdConnect      = "connect"
+	cmdMetrics      = "metric_data"
+	cmdCustomEvents = "custom_event_data"
+	cmdTxnEvents    = "analytic_event_data"
+	cmdErrorEvents  = "error_event_data"
+	cmdErrorData    = "error_data"
+	cmdTxnTraces    = "transaction_sample_data"
+	cmdSlowSQLs     = "sql_trace_data"
+)
+
+var (
+	// ErrPayloadTooLarge is created in response to receiving a 413 response
+	// code.
+	ErrPayloadTooLarge = errors.New("payload too large")
+	// ErrUnsupportedMedia is created in response to receiving a 415
+	// response code.
+	ErrUnsupportedMedia = errors.New("unsupported media")
+)
+
+// RpmCmd contains fields specific to an individual call made to RPM.
+type RpmCmd struct {
+	Name      string
+	Collector string
+	RunID     string
+	Data      []byte
+}
+
+// RpmControls contains fields which will be the same for all calls made
+// by the same application.
+type RpmControls struct {
+	UseTLS       bool
+	License      string
+	Client       *http.Client
+	Logger       logger.Logger
+	AgentVersion string
+}
+
+func rpmURL(cmd RpmCmd, cs RpmControls) string {
+	var u url.URL
+
+	u.Host = cmd.Collector
+	u.Path = "agent_listener/invoke_raw_method"
+
+	if cs.UseTLS {
+		u.Scheme = "https"
+	} else {
+		u.Scheme = "http"
+	}
+
+	query := url.Values{}
+	query.Set("marshal_format", "json")
+	query.Set("protocol_version", procotolVersion)
+	query.Set("method", cmd.Name)
+	query.Set("license_key", cs.License)
+
+	if len(cmd.RunID) > 0 {
+		query.Set("run_id", cmd.RunID)
+	}
+
+	u.RawQuery = query.Encode()
+	return u.String()
+}
+
+type unexpectedStatusCodeErr struct {
+	code int
+}
+
+func (e unexpectedStatusCodeErr) Error() string {
+	return fmt.Sprintf("unexpected HTTP status code: %d", e.code)
+}
+
+func collectorRequestInternal(url string, data []byte, cs RpmControls) ([]byte, error) {
+	deflated, err := compress(data)
+	if nil != err {
+		return nil, err
+	}
+
+	req, err := http.NewRequest("POST", url, bytes.NewBuffer(deflated))
+	if nil != err {
+		return nil, err
+	}
+
+	req.Header.Add("Accept-Encoding", "identity, deflate")
+	req.Header.Add("Content-Type", "application/octet-stream")
+	req.Header.Add("User-Agent", userAgentPrefix+cs.AgentVersion)
+	req.Header.Add("Content-Encoding", "deflate")
+
+	resp, err := cs.Client.Do(req)
+	if err != nil {
+		return nil, err
+	}
+
+	defer resp.Body.Close()
+
+	if 413 == resp.StatusCode {
+		return nil, ErrPayloadTooLarge
+	}
+
+	if 415 == resp.StatusCode {
+		return nil, ErrUnsupportedMedia
+	}
+
+	// If the response code is not 200, then the collector may not return
+	// valid JSON.
+	if 200 != resp.StatusCode {
+		return nil, unexpectedStatusCodeErr{code: resp.StatusCode}
+	}
+
+	b, err := ioutil.ReadAll(resp.Body)
+	if nil != err {
+		return nil, err
+	}
+	return parseResponse(b)
+}
+
+// CollectorRequest makes a request to New Relic.
+func CollectorRequest(cmd RpmCmd, cs RpmControls) ([]byte, error) {
+	url := rpmURL(cmd, cs)
+
+	if cs.Logger.DebugEnabled() {
+		cs.Logger.Debug("rpm request", map[string]interface{}{
+			"command": cmd.Name,
+			"url":     url,
+			"payload": JSONString(cmd.Data),
+		})
+	}
+
+	resp, err := collectorRequestInternal(url, cmd.Data, cs)
+	if err != nil {
+		cs.Logger.Debug("rpm failure", map[string]interface{}{
+			"command": cmd.Name,
+			"url":     url,
+			"error":   err.Error(),
+		})
+	}
+
+	if cs.Logger.DebugEnabled() {
+		cs.Logger.Debug("rpm response", map[string]interface{}{
+			"command":  cmd.Name,
+			"url":      url,
+			"response": JSONString(resp),
+		})
+	}
+
+	return resp, err
+}
+
+type rpmException struct {
+	Message   string `json:"message"`
+	ErrorType string `json:"error_type"`
+}
+
+func (e *rpmException) Error() string {
+	return fmt.Sprintf("%s: %s", e.ErrorType, e.Message)
+}
+
+func hasType(e error, expected string) bool {
+	rpmErr, ok := e.(*rpmException)
+	if !ok {
+		return false
+	}
+	return rpmErr.ErrorType == expected
+
+}
+
+const (
+	forceRestartType   = "NewRelic::Agent::ForceRestartException"
+	disconnectType     = "NewRelic::Agent::ForceDisconnectException"
+	licenseInvalidType = "NewRelic::Agent::LicenseException"
+	runtimeType        = "RuntimeError"
+)
+
+// IsRestartException indicates if the error was a restart exception.
+func IsRestartException(e error) bool { return hasType(e, forceRestartType) }
+
+// IsLicenseException indicates if the error was an invalid exception.
+func IsLicenseException(e error) bool { return hasType(e, licenseInvalidType) }
+
+// IsRuntime indicates if the error was a runtime exception.
+func IsRuntime(e error) bool { return hasType(e, runtimeType) }
+
+// IsDisconnect indicates if the error was a disconnect exception.
+func IsDisconnect(e error) bool { return hasType(e, disconnectType) }
+
+func parseResponse(b []byte) ([]byte, error) {
+	var r struct {
+		ReturnValue json.RawMessage `json:"return_value"`
+		Exception   *rpmException   `json:"exception"`
+	}
+
+	err := json.Unmarshal(b, &r)
+	if nil != err {
+		return nil, err
+	}
+
+	if nil != r.Exception {
+		return nil, r.Exception
+	}
+
+	return r.ReturnValue, nil
+}
+
+// ConnectAttempt tries to connect an application.
+func ConnectAttempt(js []byte, redirectHost string, cs RpmControls) (*AppRun, error) {
+	call := RpmCmd{
+		Name:      cmdRedirect,
+		Collector: redirectHost,
+		Data:      []byte("[]"),
+	}
+
+	out, err := CollectorRequest(call, cs)
+	if nil != err {
+		// err is intentionally unmodified:  We do not want to change
+		// the type of these collector errors.
+		return nil, err
+	}
+
+	var host string
+	err = json.Unmarshal(out, &host)
+	if nil != err {
+		return nil, fmt.Errorf("unable to parse redirect reply: %v", err)
+	}
+
+	call.Collector = host
+	call.Data = js
+	call.Name = cmdConnect
+
+	rawReply, err := CollectorRequest(call, cs)
+	if nil != err {
+		// err is intentionally unmodified:  We do not want to change
+		// the type of these collector errors.
+		return nil, err
+	}
+
+	reply := ConnectReplyDefaults()
+	err = json.Unmarshal(rawReply, reply)
+	if nil != err {
+		return nil, fmt.Errorf("unable to parse connect reply: %v", err)
+	}
+	// Note:  This should never happen.  It would mean the collector
+	// response is malformed.  This exists merely as extra defensiveness.
+	if "" == reply.RunID {
+		return nil, errors.New("connect reply missing agent run id")
+	}
+
+	return &AppRun{reply, host}, nil
+}

vendor/github.com/newrelic/go-agent/internal/compress.go

@@ -0,0 +1,50 @@
+package internal
+
+import (
+	"bytes"
+	"compress/zlib"
+	"encoding/base64"
+	"io/ioutil"
+)
+
+func compress(b []byte) ([]byte, error) {
+	buf := bytes.Buffer{}
+	w := zlib.NewWriter(&buf)
+	_, err := w.Write(b)
+	w.Close()
+
+	if nil != err {
+		return nil, err
+	}
+
+	return buf.Bytes(), nil
+}
+
+func uncompress(b []byte) ([]byte, error) {
+	buf := bytes.NewBuffer(b)
+	r, err := zlib.NewReader(buf)
+	if nil != err {
+		return nil, err
+	}
+	defer r.Close()
+
+	return ioutil.ReadAll(r)
+}
+
+func compressEncode(b []byte) (string, error) {
+	compressed, err := compress(b)
+
+	if nil != err {
+		return "", err
+	}
+	return base64.StdEncoding.EncodeToString(compressed), nil
+}
+
+func uncompressDecode(s string) ([]byte, error) {
+	decoded, err := base64.StdEncoding.DecodeString(s)
+	if nil != err {
+		return nil, err
+	}
+
+	return uncompress(decoded)
+}

vendor/github.com/newrelic/go-agent/internal/connect_reply.go

@@ -0,0 +1,114 @@
+package internal
+
+import (
+	"strings"
+	"time"
+)
+
+// AgentRunID identifies the current connection with the collector.
+type AgentRunID string
+
+func (id AgentRunID) String() string {
+	return string(id)
+}
+
+// AppRun contains information regarding a single connection session with the
+// collector.  It is created upon application connect and is afterwards
+// immutable.
+type AppRun struct {
+	*ConnectReply
+	Collector string
+}
+
+// ConnectReply contains all of the settings and state send down from the
+// collector.  It should not be modified after creation.
+type ConnectReply struct {
+	RunID AgentRunID `json:"agent_run_id"`
+
+	// Transaction Name Modifiers
+	SegmentTerms segmentRules `json:"transaction_segment_terms"`
+	TxnNameRules metricRules  `json:"transaction_name_rules"`
+	URLRules     metricRules  `json:"url_rules"`
+	MetricRules  metricRules  `json:"metric_name_rules"`
+
+	// Cross Process
+	EncodingKey     string `json:"encoding_key"`
+	CrossProcessID  string `json:"cross_process_id"`
+	TrustedAccounts []int  `json:"trusted_account_ids"`
+
+	// Settings
+	KeyTxnApdex            map[string]float64 `json:"web_transactions_apdex"`
+	ApdexThresholdSeconds  float64            `json:"apdex_t"`
+	CollectAnalyticsEvents bool               `json:"collect_analytics_events"`
+	CollectCustomEvents    bool               `json:"collect_custom_events"`
+	CollectTraces          bool               `json:"collect_traces"`
+	CollectErrors          bool               `json:"collect_errors"`
+	CollectErrorEvents     bool               `json:"collect_error_events"`
+
+	// RUM
+	AgentLoader string `json:"js_agent_loader"`
+	Beacon      string `json:"beacon"`
+	BrowserKey  string `json:"browser_key"`
+	AppID       string `json:"application_id"`
+	ErrorBeacon string `json:"error_beacon"`
+	JSAgentFile string `json:"js_agent_file"`
+
+	Messages []struct {
+		Message string `json:"message"`
+		Level   string `json:"level"`
+	} `json:"messages"`
+}
+
+// ConnectReplyDefaults returns a newly allocated ConnectReply with the proper
+// default settings.  A pointer to a global is not used to prevent consumers
+// from changing the default settings.
+func ConnectReplyDefaults() *ConnectReply {
+	return &ConnectReply{
+		ApdexThresholdSeconds:  0.5,
+		CollectAnalyticsEvents: true,
+		CollectCustomEvents:    true,
+		CollectTraces:          true,
+		CollectErrors:          true,
+		CollectErrorEvents:     true,
+	}
+}
+
+// CalculateApdexThreshold calculates the apdex threshold.
+func CalculateApdexThreshold(c *ConnectReply, txnName string) time.Duration {
+	if t, ok := c.KeyTxnApdex[txnName]; ok {
+		return floatSecondsToDuration(t)
+	}
+	return floatSecondsToDuration(c.ApdexThresholdSeconds)
+}
+
+// CreateFullTxnName uses collector rules and the appropriate metric prefix to
+// construct the full transaction metric name from the name given by the
+// consumer.
+func CreateFullTxnName(input string, reply *ConnectReply, isWeb bool) string {
+	var afterURLRules string
+	if "" != input {
+		afterURLRules = reply.URLRules.Apply(input)
+		if "" == afterURLRules {
+			return ""
+		}
+	}
+
+	prefix := backgroundMetricPrefix
+	if isWeb {
+		prefix = webMetricPrefix
+	}
+
+	var beforeNameRules string
+	if strings.HasPrefix(afterURLRules, "/") {
+		beforeNameRules = prefix + afterURLRules
+	} else {
+		beforeNameRules = prefix + "/" + afterURLRules
+	}
+
+	afterNameRules := reply.TxnNameRules.Apply(beforeNameRules)
+	if "" == afterNameRules {
+		return ""
+	}
+
+	return reply.SegmentTerms.apply(afterNameRules)
+}

vendor/github.com/newrelic/go-agent/internal/custom_event.go

@@ -0,0 +1,108 @@
+package internal
+
+import (
+	"bytes"
+	"fmt"
+	"regexp"
+	"time"
+)
+
+// https://newrelic.atlassian.net/wiki/display/eng/Custom+Events+in+New+Relic+Agents
+
+var (
+	eventTypeRegexRaw = `^[a-zA-Z0-9:_ ]+$`
+	eventTypeRegex    = regexp.MustCompile(eventTypeRegexRaw)
+
+	errEventTypeLength = fmt.Errorf("event type exceeds length limit of %d",
+		attributeKeyLengthLimit)
+	// ErrEventTypeRegex will be returned to caller of app.RecordCustomEvent
+	// if the event type is not valid.
+	ErrEventTypeRegex = fmt.Errorf("event type must match %s", eventTypeRegexRaw)
+	errNumAttributes  = fmt.Errorf("maximum of %d attributes exceeded",
+		customEventAttributeLimit)
+)
+
+// CustomEvent is a custom event.
+type CustomEvent struct {
+	eventType       string
+	timestamp       time.Time
+	truncatedParams map[string]interface{}
+}
+
+// WriteJSON prepares JSON in the format expected by the collector.
+func (e *CustomEvent) WriteJSON(buf *bytes.Buffer) {
+	w := jsonFieldsWriter{buf: buf}
+	buf.WriteByte('[')
+	buf.WriteByte('{')
+	w.stringField("type", e.eventType)
+	w.floatField("timestamp", timeToFloatSeconds(e.timestamp))
+	buf.WriteByte('}')
+
+	buf.WriteByte(',')
+	buf.WriteByte('{')
+	w = jsonFieldsWriter{buf: buf}
+	for key, val := range e.truncatedParams {
+		writeAttributeValueJSON(&w, key, val)
+	}
+	buf.WriteByte('}')
+
+	buf.WriteByte(',')
+	buf.WriteByte('{')
+	buf.WriteByte('}')
+	buf.WriteByte(']')
+}
+
+// MarshalJSON is used for testing.
+func (e *CustomEvent) MarshalJSON() ([]byte, error) {
+	buf := bytes.NewBuffer(make([]byte, 0, 256))
+
+	e.WriteJSON(buf)
+
+	return buf.Bytes(), nil
+}
+
+func eventTypeValidate(eventType string) error {
+	if len(eventType) > attributeKeyLengthLimit {
+		return errEventTypeLength
+	}
+	if !eventTypeRegex.MatchString(eventType) {
+		return ErrEventTypeRegex
+	}
+	return nil
+}
+
+// CreateCustomEvent creates a custom event.
+func CreateCustomEvent(eventType string, params map[string]interface{}, now time.Time) (*CustomEvent, error) {
+	if err := eventTypeValidate(eventType); nil != err {
+		return nil, err
+	}
+
+	if len(params) > customEventAttributeLimit {
+		return nil, errNumAttributes
+	}
+
+	truncatedParams := make(map[string]interface{})
+	for key, val := range params {
+		if err := validAttributeKey(key); nil != err {
+			return nil, err
+		}
+
+		val = truncateStringValueIfLongInterface(val)
+
+		if err := valueIsValid(val); nil != err {
+			return nil, err
+		}
+		truncatedParams[key] = val
+	}
+
+	return &CustomEvent{
+		eventType:       eventType,
+		timestamp:       now,
+		truncatedParams: truncatedParams,
+	}, nil
+}
+
+// MergeIntoHarvest implements Harvestable.
+func (e *CustomEvent) MergeIntoHarvest(h *Harvest) {
+	h.CustomEvents.Add(e)
+}

vendor/github.com/newrelic/go-agent/internal/custom_events.go

@@ -0,0 +1,32 @@
+package internal
+
+import (
+	"math/rand"
+	"time"
+)
+
+type customEvents struct {
+	events *analyticsEvents
+}
+
+func newCustomEvents(max int) *customEvents {
+	return &customEvents{
+		events: newAnalyticsEvents(max),
+	}
+}
+
+func (cs *customEvents) Add(e *CustomEvent) {
+	stamp := eventStamp(rand.Float32())
+	cs.events.addEvent(analyticsEvent{stamp, e})
+}
+
+func (cs *customEvents) MergeIntoHarvest(h *Harvest) {
+	h.CustomEvents.events.mergeFailed(cs.events)
+}
+
+func (cs *customEvents) Data(agentRunID string, harvestStart time.Time) ([]byte, error) {
+	return cs.events.CollectorJSON(agentRunID)
+}
+
+func (cs *customEvents) numSeen() float64  { return cs.events.NumSeen() }
+func (cs *customEvents) numSaved() float64 { return cs.events.NumSaved() }

vendor/github.com/newrelic/go-agent/internal/environment.go

@@ -0,0 +1,61 @@
+package internal
+
+import (
+	"encoding/json"
+	"reflect"
+	"runtime"
+)
+
+// Environment describes the application's environment.
+type Environment struct {
+	Compiler string `env:"runtime.Compiler"`
+	GOARCH   string `env:"runtime.GOARCH"`
+	GOOS     string `env:"runtime.GOOS"`
+	Version  string `env:"runtime.Version"`
+	NumCPU   int    `env:"runtime.NumCPU"`
+}
+
+var (
+	// SampleEnvironment is useful for testing.
+	SampleEnvironment = Environment{
+		Compiler: "comp",
+		GOARCH:   "arch",
+		GOOS:     "goos",
+		Version:  "vers",
+		NumCPU:   8,
+	}
+)
+
+// NewEnvironment returns a new Environment.
+func NewEnvironment() Environment {
+	return Environment{
+		Compiler: runtime.Compiler,
+		GOARCH:   runtime.GOARCH,
+		GOOS:     runtime.GOOS,
+		Version:  runtime.Version(),
+		NumCPU:   runtime.NumCPU(),
+	}
+}
+
+// MarshalJSON prepares Environment JSON in the format expected by the collector
+// during the connect command.
+func (e Environment) MarshalJSON() ([]byte, error) {
+	var arr [][]interface{}
+
+	val := reflect.ValueOf(e)
+	numFields := val.NumField()
+
+	arr = make([][]interface{}, numFields)
+
+	for i := 0; i < numFields; i++ {
+		v := val.Field(i)
+		t := val.Type().Field(i).Tag.Get("env")
+
+		arr[i] = []interface{}{
+			t,
+			v.Interface(),
+		}
+	}
+
+	return json.Marshal(arr)
+}

vendor/github.com/newrelic/go-agent/internal/error_events.go

@@ -0,0 +1,87 @@
+package internal
+
+import (
+	"bytes"
+	"math/rand"
+	"time"
+)
+
+// ErrorEvent is an error event.
+type ErrorEvent struct {
+	Klass    string
+	Msg      string
+	When     time.Time
+	TxnName  string
+	Duration time.Duration
+	Queuing  time.Duration
+	Attrs    *Attributes
+	DatastoreExternalTotals
+}
+
+// MarshalJSON is used for testing.
+func (e *ErrorEvent) MarshalJSON() ([]byte, error) {
+	buf := bytes.NewBuffer(make([]byte, 0, 256))
+
+	e.WriteJSON(buf)
+
+	return buf.Bytes(), nil
+}
+
+// WriteJSON prepares JSON in the format expected by the collector.
+// https://source.datanerd.us/agents/agent-specs/blob/master/Error-Events.md
+func (e *ErrorEvent) WriteJSON(buf *bytes.Buffer) {
+	w := jsonFieldsWriter{buf: buf}
+	buf.WriteByte('[')
+	buf.WriteByte('{')
+	w.stringField("type", "TransactionError")
+	w.stringField("error.class", e.Klass)
+	w.stringField("error.message", e.Msg)
+	w.floatField("timestamp", timeToFloatSeconds(e.When))
+	w.stringField("transactionName", e.TxnName)
+	w.floatField("duration", e.Duration.Seconds())
+	if e.Queuing > 0 {
+		w.floatField("queueDuration", e.Queuing.Seconds())
+	}
+	if e.externalCallCount > 0 {
+		w.intField("externalCallCount", int64(e.externalCallCount))
+		w.floatField("externalDuration", e.externalDuration.Seconds())
+	}
+	if e.datastoreCallCount > 0 {
+		// Note that "database" is used for the keys here instead of
+		// "datastore" for historical reasons.
+		w.intField("databaseCallCount", int64(e.datastoreCallCount))
+		w.floatField("databaseDuration", e.datastoreDuration.Seconds())
+	}
+	buf.WriteByte('}')
+	buf.WriteByte(',')
+	userAttributesJSON(e.Attrs, buf, destError)
+	buf.WriteByte(',')
+	agentAttributesJSON(e.Attrs, buf, destError)
+	buf.WriteByte(']')
+}
+
+type errorEvents struct {
+	events *analyticsEvents
+}
+
+func newErrorEvents(max int) *errorEvents {
+	return &errorEvents{
+		events: newAnalyticsEvents(max),
+	}
+}
+
+func (events *errorEvents) Add(e *ErrorEvent) {
+	stamp := eventStamp(rand.Float32())
+	events.events.addEvent(analyticsEvent{stamp, e})
+}
+
+func (events *errorEvents) MergeIntoHarvest(h *Harvest) {
+	h.ErrorEvents.events.mergeFailed(events.events)
+}
+
+func (events *errorEvents) Data(agentRunID string, harvestStart time.Time) ([]byte, error) {
+	return events.events.CollectorJSON(agentRunID)
+}
+
+func (events *errorEvents) numSeen() float64  { return events.events.NumSeen() }
+func (events *errorEvents) numSaved() float64 { return events.events.NumSaved() }

vendor/github.com/newrelic/go-agent/internal/errors.go

@@ -0,0 +1,179 @@
+package internal
+
+import (
+	"bytes"
+	"fmt"
+	"net/http"
+	"reflect"
+	"strconv"
+	"time"
+
+	"github.com/newrelic/go-agent/internal/jsonx"
+)
+
+const (
+	// PanicErrorKlass is the error klass used for errors generated by
+	// recovering panics in txn.End.
+	PanicErrorKlass = "panic"
+)
+
+func panicValueMsg(v interface{}) string {
+	switch val := v.(type) {
+	case error:
+		return val.Error()
+	default:
+		return fmt.Sprintf("%v", v)
+	}
+}
+
+// TxnErrorFromPanic creates a new TxnError from a panic.
+func TxnErrorFromPanic(now time.Time, v interface{}) TxnError {
+	return TxnError{
+		When:  now,
+		Msg:   panicValueMsg(v),
+		Klass: PanicErrorKlass,
+	}
+}
+
+// TxnErrorFromError creates a new TxnError from an error.
+func TxnErrorFromError(now time.Time, err error) TxnError {
+	return TxnError{
+		When:  now,
+		Msg:   err.Error(),
+		Klass: reflect.TypeOf(err).String(),
+	}
+}
+
+// TxnErrorFromResponseCode creates a new TxnError from an http response code.
+func TxnErrorFromResponseCode(now time.Time, code int) TxnError {
+	return TxnError{
+		When:  now,
+		Msg:   http.StatusText(code),
+		Klass: strconv.Itoa(code),
+	}
+}
+
+// TxnError is an error captured in a Transaction.
+type TxnError struct {
+	When  time.Time
+	Stack *StackTrace
+	Msg   string
+	Klass string
+}
+
+// TxnErrors is a set of errors captured in a Transaction.
+type TxnErrors []*TxnError
+
+// NewTxnErrors returns a new empty TxnErrors.
+func NewTxnErrors(max int) TxnErrors {
+	return make([]*TxnError, 0, max)
+}
+
+// Add adds a TxnError.
+func (errors *TxnErrors) Add(e TxnError) {
+	if len(*errors) < cap(*errors) {
+		*errors = append(*errors, &e)
+	}
+}
+
+func (h *harvestError) WriteJSON(buf *bytes.Buffer) {
+	buf.WriteByte('[')
+	jsonx.AppendFloat(buf, timeToFloatMilliseconds(h.When))
+	buf.WriteByte(',')
+	jsonx.AppendString(buf, h.txnName)
+	buf.WriteByte(',')
+	jsonx.AppendString(buf, h.Msg)
+	buf.WriteByte(',')
+	jsonx.AppendString(buf, h.Klass)
+	buf.WriteByte(',')
+	buf.WriteByte('{')
+	w := jsonFieldsWriter{buf: buf}
+	if nil != h.Stack {
+		w.writerField("stack_trace", h.Stack)
+	}
+	w.writerField("agentAttributes", agentAttributesJSONWriter{
+		attributes: h.attrs,
+		dest:       destError,
+	})
+	w.writerField("userAttributes", userAttributesJSONWriter{
+		attributes: h.attrs,
+		dest:       destError,
+	})
+	w.rawField("intrinsics", JSONString("{}"))
+	if h.requestURI != "" {
+		w.stringField("request_uri", h.requestURI)
+	}
+	buf.WriteByte('}')
+	buf.WriteByte(']')
+}
+
+// MarshalJSON is used for testing.
+func (h *harvestError) MarshalJSON() ([]byte, error) {
+	buf := &bytes.Buffer{}
+	h.WriteJSON(buf)
+	return buf.Bytes(), nil
+}
+
+type harvestError struct {
+	TxnError
+	txnName    string
+	requestURI string
+	attrs      *Attributes
+}
+
+type harvestErrors struct {
+	errors []*harvestError
+}
+
+func newHarvestErrors(max int) *harvestErrors {
+	return &harvestErrors{
+		errors: make([]*harvestError, 0, max),
+	}
+}
+
+func harvestErrorFromTxnError(e *TxnError, txnName string, requestURI string, attrs *Attributes) *harvestError {
+	return &harvestError{
+		TxnError:   *e,
+		txnName:    txnName,
+		requestURI: requestURI,
+		attrs:      attrs,
+	}
+}
+
+func addTxnError(errors *harvestErrors, e *TxnError, txnName string, requestURI string, attrs *Attributes) {
+	he := harvestErrorFromTxnError(e, txnName, requestURI, attrs)
+	errors.errors = append(errors.errors, he)
+}
+
+// MergeTxnErrors merges a transaction's errors into the harvest's errors.
+func MergeTxnErrors(errors *harvestErrors, errs TxnErrors, txnName string, requestURI string, attrs *Attributes) {
+	for _, e := range errs {
+		if len(errors.errors) == cap(errors.errors) {
+			return
+		}
+		addTxnError(errors, e, txnName, requestURI, attrs)
+	}
+}
+
+func (errors *harvestErrors) Data(agentRunID string, harvestStart time.Time) ([]byte, error) {
+	if 0 == len(errors.errors) {
+		return nil, nil
+	}
+	estimate := 1024 * len(errors.errors)
+	buf := bytes.NewBuffer(make([]byte, 0, estimate))
+	buf.WriteByte('[')
+	jsonx.AppendString(buf, agentRunID)
+	buf.WriteByte(',')
+	buf.WriteByte('[')
+	for i, e := range errors.errors {
+		if i > 0 {
+			buf.WriteByte(',')
+		}
+		e.WriteJSON(buf)
+	}
+	buf.WriteByte(']')
+	buf.WriteByte(']')
+	return buf.Bytes(), nil
+}
+
+func (errors *harvestErrors) MergeIntoHarvest(h *Harvest) {}

vendor/github.com/newrelic/go-agent/internal/expect.go

@@ -0,0 +1,402 @@
+package internal
+
+import (
+	"fmt"
+	"runtime"
+	"time"
+)
+
+var (
+	// Unfortunately, the resolution of time.Now() on Windows is coarse: Two
+	// sequential calls to time.Now() may return the same value, and tests
+	// which expect non-zero durations may fail.  To avoid adding sleep
+	// statements or mocking time.Now(), those tests are skipped on Windows.
+	doDurationTests = runtime.GOOS != `windows`
+)
+
+// Validator is used for testing.
+type Validator interface {
+	Error(...interface{})
+}
+
+func validateStringField(v Validator, fieldName, v1, v2 string) {
+	if v1 != v2 {
+		v.Error(fieldName, v1, v2)
+	}
+}
+
+type addValidatorField struct {
+	field    interface{}
+	original Validator
+}
+
+func (a addValidatorField) Error(fields ...interface{}) {
+	fields = append([]interface{}{a.field}, fields...)
+	a.original.Error(fields...)
+}
+
+// ExtendValidator is used to add more context to a validator.
+func ExtendValidator(v Validator, field interface{}) Validator {
+	return addValidatorField{
+		field:    field,
+		original: v,
+	}
+}
+
+// WantMetric is a metric expectation.  If Data is nil, then any data values are
+// acceptable.
+type WantMetric struct {
+	Name   string
+	Scope  string
+	Forced interface{} // true, false, or nil
+	Data   []float64
+}
+
+// WantCustomEvent is a custom event expectation.
+type WantCustomEvent struct {
+	Type   string
+	Params map[string]interface{}
+}
+
+// WantError is a traced error expectation.
+type WantError struct {
+	TxnName         string
+	Msg             string
+	Klass           string
+	Caller          string
+	URL             string
+	UserAttributes  map[string]interface{}
+	AgentAttributes map[string]interface{}
+}
+
+// WantErrorEvent is an error event expectation.
+type WantErrorEvent struct {
+	TxnName            string
+	Msg                string
+	Klass              string
+	Queuing            bool
+	ExternalCallCount  uint64
+	DatastoreCallCount uint64
+	UserAttributes     map[string]interface{}
+	AgentAttributes    map[string]interface{}
+}
+
+// WantTxnEvent is a transaction event expectation.
+type WantTxnEvent struct {
+	Name               string
+	Zone               string
+	Queuing            bool
+	ExternalCallCount  uint64
+	DatastoreCallCount uint64
+	UserAttributes     map[string]interface{}
+	AgentAttributes    map[string]interface{}
+}
+
+// WantTxnTrace is a transaction trace expectation.
+type WantTxnTrace struct {
+	MetricName      string
+	CleanURL        string
+	NumSegments     int
+	UserAttributes  map[string]interface{}
+	AgentAttributes map[string]interface{}
+}
+
+// WantSlowQuery is a slowQuery expectation.
+type WantSlowQuery struct {
+	Count        int32
+	MetricName   string
+	Query        string
+	TxnName      string
+	TxnURL       string
+	DatabaseName string
+	Host         string
+	PortPathOrID string
+	Params       map[string]interface{}
+}
+
+// Expect exposes methods that allow for testing whether the correct data was
+// captured.
+type Expect interface {
+	ExpectCustomEvents(t Validator, want []WantCustomEvent)
+	ExpectErrors(t Validator, want []WantError)
+	ExpectErrorEvents(t Validator, want []WantErrorEvent)
+	ExpectTxnEvents(t Validator, want []WantTxnEvent)
+	ExpectMetrics(t Validator, want []WantMetric)
+	ExpectTxnTraces(t Validator, want []WantTxnTrace)
+	ExpectSlowQueries(t Validator, want []WantSlowQuery)
+}
+
+func expectMetricField(t Validator, id metricID, v1, v2 float64, fieldName string) {
+	if v1 != v2 {
+		t.Error("metric fields do not match", id, v1, v2, fieldName)
+	}
+}
+
+// ExpectMetrics allows testing of metrics.
+func ExpectMetrics(t Validator, mt *metricTable, expect []WantMetric) {
+	if len(mt.metrics) != len(expect) {
+		t.Error("metric counts do not match expectations", len(mt.metrics), len(expect))
+	}
+	expectedIds := make(map[metricID]struct{})
+	for _, e := range expect {
+		id := metricID{Name: e.Name, Scope: e.Scope}
+		expectedIds[id] = struct{}{}
+		m := mt.metrics[id]
+		if nil == m {
+			t.Error("unable to find metric", id)
+			continue
+		}
+
+		if b, ok := e.Forced.(bool); ok {
+			if b != (forced == m.forced) {
+				t.Error("metric forced incorrect", b, m.forced, id)
+			}
+		}
+
+		if nil != e.Data {
+			expectMetricField(t, id, e.Data[0], m.data.countSatisfied, "countSatisfied")
+			expectMetricField(t, id, e.Data[1], m.data.totalTolerated, "totalTolerated")
+			expectMetricField(t, id, e.Data[2], m.data.exclusiveFailed, "exclusiveFailed")
+			expectMetricField(t, id, e.Data[3], m.data.min, "min")
+			expectMetricField(t, id, e.Data[4], m.data.max, "max")
+			expectMetricField(t, id, e.Data[5], m.data.sumSquares, "sumSquares")
+		}
+	}
+	for id := range mt.metrics {
+		if _, ok := expectedIds[id]; !ok {
+			t.Error("expected metrics does not contain", id.Name, id.Scope)
+		}
+	}
+}
+
+func expectAttributes(v Validator, exists map[string]interface{}, expect map[string]interface{}) {
+	// TODO: This params comparison can be made smarter: Alert differences
+	// based on sub/super set behavior.
+	if len(exists) != len(expect) {
+		v.Error("attributes length difference", exists, expect)
+		return
+	}
+	for key, val := range expect {
+		found, ok := exists[key]
+		if !ok {
+			v.Error("missing key", key)
+			continue
+		}
+		v1 := fmt.Sprint(found)
+		v2 := fmt.Sprint(val)
+		if v1 != v2 {
+			v.Error("value difference", fmt.Sprintf("key=%s", key),
+				v1, v2)
+		}
+	}
+}
+
+func expectCustomEvent(v Validator, event *CustomEvent, expect WantCustomEvent) {
+	if event.eventType != expect.Type {
+		v.Error("type mismatch", event.eventType, expect.Type)
+	}
+	now := time.Now()
+	diff := absTimeDiff(now, event.timestamp)
+	if diff > time.Hour {
+		v.Error("large timestamp difference", event.eventType, now, event.timestamp)
+	}
+	expectAttributes(v, event.truncatedParams, expect.Params)
+}
+
+// ExpectCustomEvents allows testing of custom events.
+func ExpectCustomEvents(v Validator, cs *customEvents, expect []WantCustomEvent) {
+	if len(cs.events.events) != len(expect) {
+		v.Error("number of custom events does not match", len(cs.events.events),
+			len(expect))
+		return
+	}
+	for i, e := range expect {
+		event, ok := cs.events.events[i].jsonWriter.(*CustomEvent)
+		if !ok {
+			v.Error("wrong custom event")
+		} else {
+			expectCustomEvent(v, event, e)
+		}
+	}
+}
+
+func expectErrorEvent(v Validator, err *ErrorEvent, expect WantErrorEvent) {
+	validateStringField(v, "txnName", expect.TxnName, err.TxnName)
+	validateStringField(v, "klass", expect.Klass, err.Klass)
+	validateStringField(v, "msg", expect.Msg, err.Msg)
+	if (0 != err.Queuing) != expect.Queuing {
+		v.Error("queuing", err.Queuing)
+	}
+	if nil != expect.UserAttributes {
+		expectAttributes(v, getUserAttributes(err.Attrs, destError), expect.UserAttributes)
+	}
+	if nil != expect.AgentAttributes {
+		expectAttributes(v, getAgentAttributes(err.Attrs, destError), expect.AgentAttributes)
+	}
+	if expect.ExternalCallCount != err.externalCallCount {
+		v.Error("external call count", expect.ExternalCallCount, err.externalCallCount)
+	}
+	if doDurationTests && (0 == expect.ExternalCallCount) != (err.externalDuration == 0) {
+		v.Error("external duration", err.externalDuration)
+	}
+	if expect.DatastoreCallCount != err.datastoreCallCount {
+		v.Error("datastore call count", expect.DatastoreCallCount, err.datastoreCallCount)
+	}
+	if doDurationTests && (0 == expect.DatastoreCallCount) != (err.datastoreDuration == 0) {
+		v.Error("datastore duration", err.datastoreDuration)
+	}
+}
+
+// ExpectErrorEvents allows testing of error events.
+func ExpectErrorEvents(v Validator, events *errorEvents, expect []WantErrorEvent) {
+	if len(events.events.events) != len(expect) {
+		v.Error("number of custom events does not match",
+			len(events.events.events), len(expect))
+		return
+	}
+	for i, e := range expect {
+		event, ok := events.events.events[i].jsonWriter.(*ErrorEvent)
+		if !ok {
+			v.Error("wrong error event")
+		} else {
+			expectErrorEvent(v, event, e)
+		}
+	}
+}
+
+func expectTxnEvent(v Validator, e *TxnEvent, expect WantTxnEvent) {
+	validateStringField(v, "apdex zone", expect.Zone, e.Zone.label())
+	validateStringField(v, "name", expect.Name, e.Name)
+	if doDurationTests && 0 == e.Duration {
+		v.Error("zero duration", e.Duration)
+	}
+	if (0 != e.Queuing) != expect.Queuing {
+		v.Error("queuing", e.Queuing)
+	}
+	if nil != expect.UserAttributes {
+		expectAttributes(v, getUserAttributes(e.Attrs, destTxnEvent), expect.UserAttributes)
+	}
+	if nil != expect.AgentAttributes {
+		expectAttributes(v, getAgentAttributes(e.Attrs, destTxnEvent), expect.AgentAttributes)
+	}
+	if expect.ExternalCallCount != e.externalCallCount {
+		v.Error("external call count", expect.ExternalCallCount, e.externalCallCount)
+	}
+	if doDurationTests && (0 == expect.ExternalCallCount) != (e.externalDuration == 0) {
+		v.Error("external duration", e.externalDuration)
+	}
+	if expect.DatastoreCallCount != e.datastoreCallCount {
+		v.Error("datastore call count", expect.DatastoreCallCount, e.datastoreCallCount)
+	}
+	if doDurationTests && (0 == expect.DatastoreCallCount) != (e.datastoreDuration == 0) {
+		v.Error("datastore duration", e.datastoreDuration)
+	}
+}
+
+// ExpectTxnEvents allows testing of txn events.
+func ExpectTxnEvents(v Validator, events *txnEvents, expect []WantTxnEvent) {
+	if len(events.events.events) != len(expect) {
+		v.Error("number of txn events does not match",
+			len(events.events.events), len(expect))
+		return
+	}
+	for i, e := range expect {
+		event, ok := events.events.events[i].jsonWriter.(*TxnEvent)
+		if !ok {
+			v.Error("wrong txn event")
+		} else {
+			expectTxnEvent(v, event, e)
+		}
+	}
+}
+
+func expectError(v Validator, err *harvestError, expect WantError) {
+	caller := topCallerNameBase(err.TxnError.Stack)
+	validateStringField(v, "caller", expect.Caller, caller)
+	validateStringField(v, "txnName", expect.TxnName, err.txnName)
+	validateStringField(v, "klass", expect.Klass, err.TxnError.Klass)
+	validateStringField(v, "msg", expect.Msg, err.TxnError.Msg)
+	validateStringField(v, "URL", expect.URL, err.requestURI)
+	if nil != expect.UserAttributes {
+		expectAttributes(v, getUserAttributes(err.attrs, destError), expect.UserAttributes)
+	}
+	if nil != expect.AgentAttributes {
+		expectAttributes(v, getAgentAttributes(err.attrs, destError), expect.AgentAttributes)
+	}
+}
+
+// ExpectErrors allows testing of errors.
+func ExpectErrors(v Validator, errors *harvestErrors, expect []WantError) {
+	if len(errors.errors) != len(expect) {
+		v.Error("number of errors mismatch", len(errors.errors), len(expect))
+		return
+	}
+	for i, e := range expect {
+		expectError(v, errors.errors[i], e)
+	}
+}
+
+func expectTxnTrace(v Validator, trace *HarvestTrace, expect WantTxnTrace) {
+	if doDurationTests && 0 == trace.Duration {
+		v.Error("zero trace duration")
+	}
+	validateStringField(v, "metric name", expect.MetricName, trace.MetricName)
+	validateStringField(v, "request url", expect.CleanURL, trace.CleanURL)
+	if nil != expect.UserAttributes {
+		expectAttributes(v, getUserAttributes(trace.Attrs, destTxnTrace), expect.UserAttributes)
+	}
+	if nil != expect.AgentAttributes {
+		expectAttributes(v, getAgentAttributes(trace.Attrs, destTxnTrace), expect.AgentAttributes)
+	}
+	if expect.NumSegments != len(trace.Trace.nodes) {
+		v.Error("wrong number of segments", expect.NumSegments, len(trace.Trace.nodes))
+	}
+}
+
+// ExpectTxnTraces allows testing of transaction traces.
+func ExpectTxnTraces(v Validator, traces *harvestTraces, want []WantTxnTrace) {
+	if len(want) == 0 {
+		if nil != traces.trace {
+			v.Error("trace exists when not expected")
+		}
+	} else if len(want) > 1 {
+		v.Error("too many traces expected")
+	} else {
+		if nil == traces.trace {
+			v.Error("missing expected trace")
+		} else {
+			expectTxnTrace(v, traces.trace, want[0])
+		}
+	}
+}
+
+func expectSlowQuery(t Validator, slowQuery *slowQuery, want WantSlowQuery) {
+	if slowQuery.Count != want.Count {
+		t.Error("wrong Count field", slowQuery.Count, want.Count)
+	}
+	validateStringField(t, "MetricName", slowQuery.DatastoreMetric, want.MetricName)
+	validateStringField(t, "Query", slowQuery.ParameterizedQuery, want.Query)
+	validateStringField(t, "TxnName", slowQuery.TxnName, want.TxnName)
+	validateStringField(t, "TxnURL", slowQuery.TxnURL, want.TxnURL)
+	validateStringField(t, "DatabaseName", slowQuery.DatabaseName, want.DatabaseName)
+	validateStringField(t, "Host", slowQuery.Host, want.Host)
+	validateStringField(t, "PortPathOrID", slowQuery.PortPathOrID, want.PortPathOrID)
+	expectAttributes(t, map[string]interface{}(slowQuery.QueryParameters), want.Params)
+}
+
+// ExpectSlowQueries allows testing of slow queries.
+func ExpectSlowQueries(t Validator, slowQueries *slowQueries, want []WantSlowQuery) {
+	if len(want) != len(slowQueries.priorityQueue) {
+		t.Error("wrong number of slow queries",
+			"expected", len(want), "got", len(slowQueries.priorityQueue))
+		return
+	}
+	for _, s := range want {
+		idx, ok := slowQueries.lookup[s.Query]
+		if !ok {
+			t.Error("unable to find slow query", s.Query)
+			continue
+		}
+		expectSlowQuery(t, slowQueries.priorityQueue[idx], s)
+	}
+}

vendor/github.com/newrelic/go-agent/internal/harvest.go

@@ -0,0 +1,153 @@
+package internal
+
+import (
+	"strings"
+	"sync"
+	"time"
+)
+
+// Harvestable is something that can be merged into a Harvest.
+type Harvestable interface {
+	MergeIntoHarvest(h *Harvest)
+}
+
+// Harvest contains collected data.
+type Harvest struct {
+	Metrics      *metricTable
+	CustomEvents *customEvents
+	TxnEvents    *txnEvents
+	ErrorEvents  *errorEvents
+	ErrorTraces  *harvestErrors
+	TxnTraces    *harvestTraces
+	SlowSQLs     *slowQueries
+}
+
+// Payloads returns a map from expected collector method name to data type.
+func (h *Harvest) Payloads() map[string]PayloadCreator {
+	return map[string]PayloadCreator{
+		cmdMetrics:      h.Metrics,
+		cmdCustomEvents: h.CustomEvents,
+		cmdTxnEvents:    h.TxnEvents,
+		cmdErrorEvents:  h.ErrorEvents,
+		cmdErrorData:    h.ErrorTraces,
+		cmdTxnTraces:    h.TxnTraces,
+		cmdSlowSQLs:     h.SlowSQLs,
+	}
+}
+
+// NewHarvest returns a new Harvest.
+func NewHarvest(now time.Time) *Harvest {
+	return &Harvest{
+		Metrics:      newMetricTable(maxMetrics, now),
+		CustomEvents: newCustomEvents(maxCustomEvents),
+		TxnEvents:    newTxnEvents(maxTxnEvents),
+		ErrorEvents:  newErrorEvents(maxErrorEvents),
+		ErrorTraces:  newHarvestErrors(maxHarvestErrors),
+		TxnTraces:    newHarvestTraces(),
+		SlowSQLs:     newSlowQueries(maxHarvestSlowSQLs),
+	}
+}
+
+var (
+	trackMutex   sync.Mutex
+	trackMetrics []string
+)
+
+// TrackUsage helps track which integration packages are used.
+func TrackUsage(s ...string) {
+	trackMutex.Lock()
+	defer trackMutex.Unlock()
+
+	m := "Supportability/" + strings.Join(s, "/")
+	trackMetrics = append(trackMetrics, m)
+}
+
+func createTrackUsageMetrics(metrics *metricTable) {
+	trackMutex.Lock()
+	defer trackMutex.Unlock()
+
+	for _, m := range trackMetrics {
+		metrics.addSingleCount(m, forced)
+	}
+}
+
+// CreateFinalMetrics creates extra metrics at harvest time.
+func (h *Harvest) CreateFinalMetrics() {
+	h.Metrics.addSingleCount(instanceReporting, forced)
+
+	h.Metrics.addCount(customEventsSeen, h.CustomEvents.numSeen(), forced)
+	h.Metrics.addCount(customEventsSent, h.CustomEvents.numSaved(), forced)
+
+	h.Metrics.addCount(txnEventsSeen, h.TxnEvents.numSeen(), forced)
+	h.Metrics.addCount(txnEventsSent, h.TxnEvents.numSaved(), forced)
+
+	h.Metrics.addCount(errorEventsSeen, h.ErrorEvents.numSeen(), forced)
+	h.Metrics.addCount(errorEventsSent, h.ErrorEvents.numSaved(), forced)
+
+	if h.Metrics.numDropped > 0 {
+		h.Metrics.addCount(supportabilityDropped, float64(h.Metrics.numDropped), forced)
+	}
+
+	createTrackUsageMetrics(h.Metrics)
+}
+
+// PayloadCreator is a data type in the harvest.
+type PayloadCreator interface {
+	// In the event of a rpm request failure (hopefully simply an
+	// intermittent collector issue) the payload may be merged into the next
+	// time period's harvest.
+	Harvestable
+	// Data prepares JSON in the format expected by the collector endpoint.
+	// This method should return (nil, nil) if the payload is empty and no
+	// rpm request is necessary.
+	Data(agentRunID string, harvestStart time.Time) ([]byte, error)
+}
+
+// CreateTxnMetricsArgs contains the parameters to CreateTxnMetrics.
+type CreateTxnMetricsArgs struct {
+	IsWeb          bool
+	Duration       time.Duration
+	Exclusive      time.Duration
+	Name           string
+	Zone           ApdexZone
+	ApdexThreshold time.Duration
+	HasErrors      bool
+	Queueing       time.Duration
+}
+
+// CreateTxnMetrics creates metrics for a transaction.
+func CreateTxnMetrics(args CreateTxnMetricsArgs, metrics *metricTable) {
+	// Duration Metrics
+	rollup := backgroundRollup
+	if args.IsWeb {
+		rollup = webRollup
+		metrics.addDuration(dispatcherMetric, "", args.Duration, 0, forced)
+	}
+
+	metrics.addDuration(args.Name, "", args.Duration, args.Exclusive, forced)
+	metrics.addDuration(rollup, "", args.Duration, args.Exclusive, forced)
+
+	// Apdex Metrics
+	if args.Zone != ApdexNone {
+		metrics.addApdex(apdexRollup, "", args.ApdexThreshold, args.Zone, forced)
+
+		mname := apdexPrefix + removeFirstSegment(args.Name)
+		metrics.addApdex(mname, "", args.ApdexThreshold, args.Zone, unforced)
+	}
+
+	// Error Metrics
+	if args.HasErrors {
+		metrics.addSingleCount(errorsAll, forced)
+		if args.IsWeb {
+			metrics.addSingleCount(errorsWeb, forced)
+		} else {
+			metrics.addSingleCount(errorsBackground, forced)
+		}
+		metrics.addSingleCount(errorsPrefix+args.Name, forced)
+	}
+
+	// Queueing Metrics
+	if args.Queueing > 0 {
+		metrics.addDuration(queueMetric, "", args.Queueing, args.Queueing, forced)
+	}
+}

vendor/github.com/newrelic/go-agent/internal/json_object_writer.go

@@ -0,0 +1,52 @@
+package internal
+
+import (
+	"bytes"
+
+	"github.com/newrelic/go-agent/internal/jsonx"
+)
+
+type jsonWriter interface {
+	WriteJSON(buf *bytes.Buffer)
+}
+
+type jsonFieldsWriter struct {
+	buf        *bytes.Buffer
+	needsComma bool
+}
+
+func (w *jsonFieldsWriter) addKey(key string) {
+	if w.needsComma {
+		w.buf.WriteByte(',')
+	} else {
+		w.needsComma = true
+	}
+	// defensively assume that the key needs escaping:
+	jsonx.AppendString(w.buf, key)
+	w.buf.WriteByte(':')
+}
+
+func (w *jsonFieldsWriter) stringField(key string, val string) {
+	w.addKey(key)
+	jsonx.AppendString(w.buf, val)
+}
+
+func (w *jsonFieldsWriter) intField(key string, val int64) {
+	w.addKey(key)
+	jsonx.AppendInt(w.buf, val)
+}
+
+func (w *jsonFieldsWriter) floatField(key string, val float64) {
+	w.addKey(key)
+	jsonx.AppendFloat(w.buf, val)
+}
+
+func (w *jsonFieldsWriter) rawField(key string, val JSONString) {
+	w.addKey(key)
+	w.buf.WriteString(string(val))
+}
+
+func (w *jsonFieldsWriter) writerField(key string, val jsonWriter) {
+	w.addKey(key)
+	val.WriteJSON(w.buf)
+}

vendor/github.com/newrelic/go-agent/internal/jsonx/encode.go

@@ -0,0 +1,174 @@
+// Copyright 2010 The Go Authors.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package jsonx extends the encoding/json package to encode JSON
+// incrementally and without requiring reflection.
+package jsonx
+
+import (
+	"bytes"
+	"encoding/json"
+	"math"
+	"reflect"
+	"strconv"
+	"unicode/utf8"
+)
+
+var hex = "0123456789abcdef"
+
+// AppendString escapes s appends it to buf.
+func AppendString(buf *bytes.Buffer, s string) {
+	buf.WriteByte('"')
+	start := 0
+	for i := 0; i < len(s); {
+		if b := s[i]; b < utf8.RuneSelf {
+			if 0x20 <= b && b != '\\' && b != '"' && b != '<' && b != '>' && b != '&' {
+				i++
+				continue
+			}
+			if start < i {
+				buf.WriteString(s[start:i])
+			}
+			switch b {
+			case '\\', '"':
+				buf.WriteByte('\\')
+				buf.WriteByte(b)
+			case '\n':
+				buf.WriteByte('\\')
+				buf.WriteByte('n')
+			case '\r':
+				buf.WriteByte('\\')
+				buf.WriteByte('r')
+			case '\t':
+				buf.WriteByte('\\')
+				buf.WriteByte('t')
+			default:
+				// This encodes bytes < 0x20 except for \n and \r,
+				// as well as <, > and &. The latter are escaped because they
+				// can lead to security holes when user-controlled strings
+				// are rendered into JSON and served to some browsers.
+				buf.WriteString(`\u00`)
+				buf.WriteByte(hex[b>>4])
+				buf.WriteByte(hex[b&0xF])
+			}
+			i++
+			start = i
+			continue
+		}
+		c, size := utf8.DecodeRuneInString(s[i:])
+		if c == utf8.RuneError && size == 1 {
+			if start < i {
+				buf.WriteString(s[start:i])
+			}
+			buf.WriteString(`\ufffd`)
+			i += size
+			start = i
+			continue
+		}
+		// U+2028 is LINE SEPARATOR.
+		// U+2029 is PARAGRAPH SEPARATOR.
+		// They are both technically valid characters in JSON strings,
+		// but don't work in JSONP, which has to be evaluated as JavaScript,
+		// and can lead to security holes there. It is valid JSON to
+		// escape them, so we do so unconditionally.
+		// See http://timelessrepo.com/json-isnt-a-javascript-subset for discussion.
+		if c == '\u2028' || c == '\u2029' {
+			if start < i {
+				buf.WriteString(s[start:i])
+			}
+			buf.WriteString(`\u202`)
+			buf.WriteByte(hex[c&0xF])
+			i += size
+			start = i
+			continue
+		}
+		i += size
+	}
+	if start < len(s) {
+		buf.WriteString(s[start:])
+	}
+	buf.WriteByte('"')
+}
+
+// AppendStringArray appends an array of string literals to buf.
+func AppendStringArray(buf *bytes.Buffer, a ...string) {
+	buf.WriteByte('[')
+	for i, s := range a {
+		if i > 0 {
+			buf.WriteByte(',')
+		}
+		AppendString(buf, s)
+	}
+	buf.WriteByte(']')
+}
+
+// AppendFloat appends a numeric literal representing the value to buf.
+func AppendFloat(buf *bytes.Buffer, x float64) error {
+	var scratch [64]byte
+
+	if math.IsInf(x, 0) || math.IsNaN(x) {
+		return &json.UnsupportedValueError{
+			Value: reflect.ValueOf(x),
+			Str:   strconv.FormatFloat(x, 'g', -1, 64),
+		}
+	}
+
+	buf.Write(strconv.AppendFloat(scratch[:0], x, 'g', -1, 64))
+	return nil
+}
+
+// AppendFloatArray appends an array of numeric literals to buf.
+func AppendFloatArray(buf *bytes.Buffer, a ...float64) error {
+	buf.WriteByte('[')
+	for i, x := range a {
+		if i > 0 {
+			buf.WriteByte(',')
+		}
+		if err := AppendFloat(buf, x); err != nil {
+			return err
+		}
+	}
+	buf.WriteByte(']')
+	return nil
+}
+
+// AppendInt appends a numeric literal representing the value to buf.
+func AppendInt(buf *bytes.Buffer, x int64) {
+	var scratch [64]byte
+	buf.Write(strconv.AppendInt(scratch[:0], x, 10))
+}
+
+// AppendIntArray appends an array of numeric literals to buf.
+func AppendIntArray(buf *bytes.Buffer, a ...int64) {
+	var scratch [64]byte
+
+	buf.WriteByte('[')
+	for i, x := range a {
+		if i > 0 {
+			buf.WriteByte(',')
+		}
+		buf.Write(strconv.AppendInt(scratch[:0], x, 10))
+	}
+	buf.WriteByte(']')
+}
+
+// AppendUint appends a numeric literal representing the value to buf.
+func AppendUint(buf *bytes.Buffer, x uint64) {
+	var scratch [64]byte
+	buf.Write(strconv.AppendUint(scratch[:0], x, 10))
+}
+
+// AppendUintArray appends an array of numeric literals to buf.
+func AppendUintArray(buf *bytes.Buffer, a ...uint64) {
+	var scratch [64]byte
+
+	buf.WriteByte('[')
+	for i, x := range a {
+		if i > 0 {
+			buf.WriteByte(',')
+		}
+		buf.Write(strconv.AppendUint(scratch[:0], x, 10))
+	}
+	buf.WriteByte(']')
+}

vendor/github.com/newrelic/go-agent/internal/labels.go

@@ -0,0 +1,23 @@
+package internal
+
+import "encoding/json"
+
+// Labels is used for connect JSON formatting.
+type Labels map[string]string
+
+// MarshalJSON requires a comment for golint?
+func (l Labels) MarshalJSON() ([]byte, error) {
+	ls := make([]struct {
+		Key   string `json:"label_type"`
+		Value string `json:"label_value"`
+	}, len(l))
+
+	i := 0
+	for key, val := range l {
+		ls[i].Key = key
+		ls[i].Value = val
+		i++
+	}
+
+	return json.Marshal(ls)
+}

vendor/github.com/newrelic/go-agent/internal/limits.go

@@ -0,0 +1,53 @@
+package internal
+
+import "time"
+
+const (
+	// app behavior
+
+	// ConnectBackoff is the wait time between unsuccessful connect
+	// attempts.
+	ConnectBackoff = 20 * time.Second
+	// HarvestPeriod is the period that collected data is sent to New Relic.
+	HarvestPeriod = 60 * time.Second
+	// CollectorTimeout is the timeout used in the client for communication
+	// with New Relic's servers.
+	CollectorTimeout = 20 * time.Second
+	// AppDataChanSize is the size of the channel that contains data sent
+	// the app processor.
+	AppDataChanSize           = 200
+	failedMetricAttemptsLimit = 5
+	failedEventsAttemptsLimit = 10
+
+	// transaction behavior
+	maxStackTraceFrames = 100
+	// MaxTxnErrors is the maximum number of errors captured per
+	// transaction.
+	MaxTxnErrors      = 5
+	maxTxnTraceNodes  = 256
+	maxTxnSlowQueries = 10
+
+	// harvest data
+	maxMetrics         = 2 * 1000
+	maxCustomEvents    = 10 * 1000
+	maxTxnEvents       = 10 * 1000
+	maxErrorEvents     = 100
+	maxHarvestErrors   = 20
+	maxHarvestSlowSQLs = 10
+
+	// attributes
+	attributeKeyLengthLimit   = 255
+	attributeValueLengthLimit = 255
+	attributeUserLimit        = 64
+	attributeAgentLimit       = 255 - attributeUserLimit
+	customEventAttributeLimit = 64
+
+	// Limits affecting Config validation are found in the config package.
+
+	// RuntimeSamplerPeriod is the period of the runtime sampler.  Runtime
+	// metrics should not depend on the sampler period, but the period must
+	// be the same across instances.  For that reason, this value should not
+	// be changed without notifying customers that they must update all
+	// instance simultaneously for valid runtime metrics.
+	RuntimeSamplerPeriod = 60 * time.Second
+)

vendor/github.com/newrelic/go-agent/internal/logger/logger.go

@@ -0,0 +1,89 @@
+package logger
+
+import (
+	"encoding/json"
+	"fmt"
+	"io"
+	"log"
+	"os"
+)
+
+// Logger matches newrelic.Logger to allow implementations to be passed to
+// internal packages.
+type Logger interface {
+	Error(msg string, context map[string]interface{})
+	Warn(msg string, context map[string]interface{})
+	Info(msg string, context map[string]interface{})
+	Debug(msg string, context map[string]interface{})
+	DebugEnabled() bool
+}
+
+// ShimLogger implements Logger and does nothing.
+type ShimLogger struct{}
+
+// Error allows ShimLogger to implement Logger.
+func (s ShimLogger) Error(string, map[string]interface{}) {}
+
+// Warn allows ShimLogger to implement Logger.
+func (s ShimLogger) Warn(string, map[string]interface{}) {}
+
+// Info allows ShimLogger to implement Logger.
+func (s ShimLogger) Info(string, map[string]interface{}) {}
+
+// Debug allows ShimLogger to implement Logger.
+func (s ShimLogger) Debug(string, map[string]interface{}) {}
+
+// DebugEnabled allows ShimLogger to implement Logger.
+func (s ShimLogger) DebugEnabled() bool { return false }
+
+type logFile struct {
+	l       *log.Logger
+	doDebug bool
+}
+
+// New creates a basic Logger.
+func New(w io.Writer, doDebug bool) Logger {
+	return &logFile{
+		l:       log.New(w, logPid, logFlags),
+		doDebug: doDebug,
+	}
+}
+
+const logFlags = log.Ldate | log.Ltime | log.Lmicroseconds
+
+var (
+	logPid = fmt.Sprintf("(%d) ", os.Getpid())
+)
+
+func (f *logFile) fire(level, msg string, ctx map[string]interface{}) {
+	js, err := json.Marshal(struct {
+		Level   string                 `json:"level"`
+		Event   string                 `json:"msg"`
+		Context map[string]interface{} `json:"context"`
+	}{
+		level,
+		msg,
+		ctx,
+	})
+	if nil == err {
+		f.l.Printf(string(js))
+	} else {
+		f.l.Printf("unable to marshal log entry: %v", err)
+	}
+}
+
+func (f *logFile) Error(msg string, ctx map[string]interface{}) {
+	f.fire("error", msg, ctx)
+}
+func (f *logFile) Warn(msg string, ctx map[string]interface{}) {
+	f.fire("warn", msg, ctx)
+}
+func (f *logFile) Info(msg string, ctx map[string]interface{}) {
+	f.fire("info", msg, ctx)
+}
+func (f *logFile) Debug(msg string, ctx map[string]interface{}) {
+	if f.doDebug {
+		f.fire("debug", msg, ctx)
+	}
+}
+func (f *logFile) DebugEnabled() bool { return f.doDebug }

vendor/github.com/newrelic/go-agent/internal/metric_names.go

@@ -0,0 +1,145 @@
+package internal
+
+const (
+	apdexRollup = "Apdex"
+	apdexPrefix = "Apdex/"
+
+	webRollup        = "WebTransaction"
+	backgroundRollup = "OtherTransaction/all"
+
+	errorsAll        = "Errors/all"
+	errorsWeb        = "Errors/allWeb"
+	errorsBackground = "Errors/allOther"
+	errorsPrefix     = "Errors/"
+
+	// "HttpDispatcher" metric is used for the overview graph, and
+	// therefore should only be made for web transactions.
+	dispatcherMetric = "HttpDispatcher"
+
+	queueMetric = "WebFrontend/QueueTime"
+
+	webMetricPrefix        = "WebTransaction/Go"
+	backgroundMetricPrefix = "OtherTransaction/Go"
+
+	instanceReporting = "Instance/Reporting"
+
+	// https://newrelic.atlassian.net/wiki/display/eng/Custom+Events+in+New+Relic+Agents
+	customEventsSeen = "Supportability/Events/Customer/Seen"
+	customEventsSent = "Supportability/Events/Customer/Sent"
+
+	// https://source.datanerd.us/agents/agent-specs/blob/master/Transaction-Events-PORTED.md
+	txnEventsSeen = "Supportability/AnalyticsEvents/TotalEventsSeen"
+	txnEventsSent = "Supportability/AnalyticsEvents/TotalEventsSent"
+
+	// https://source.datanerd.us/agents/agent-specs/blob/master/Error-Events.md
+	errorEventsSeen = "Supportability/Events/TransactionError/Seen"
+	errorEventsSent = "Supportability/Events/TransactionError/Sent"
+
+	supportabilityDropped = "Supportability/MetricsDropped"
+
+	// source.datanerd.us/agents/agent-specs/blob/master/Datastore-Metrics-PORTED.md
+	datastoreAll   = "Datastore/all"
+	datastoreWeb   = "Datastore/allWeb"
+	datastoreOther = "Datastore/allOther"
+
+	// source.datanerd.us/agents/agent-specs/blob/master/APIs/external_segment.md
+	// source.datanerd.us/agents/agent-specs/blob/master/APIs/external_cat.md
+	// source.datanerd.us/agents/agent-specs/blob/master/Cross-Application-Tracing-PORTED.md
+	externalAll   = "External/all"
+	externalWeb   = "External/allWeb"
+	externalOther = "External/allOther"
+
+	// Runtime/System Metrics
+	memoryPhysical       = "Memory/Physical"
+	heapObjectsAllocated = "Memory/Heap/AllocatedObjects"
+	cpuUserUtilization   = "CPU/User/Utilization"
+	cpuSystemUtilization = "CPU/System/Utilization"
+	cpuUserTime          = "CPU/User Time"
+	cpuSystemTime        = "CPU/System Time"
+	runGoroutine         = "Go/Runtime/Goroutines"
+	gcPauseFraction      = "GC/System/Pause Fraction"
+	gcPauses             = "GC/System/Pauses"
+)
+
+func customSegmentMetric(s string) string {
+	return "Custom/" + s
+}
+
+// DatastoreMetricKey contains the fields by which datastore metrics are
+// aggregated.
+type DatastoreMetricKey struct {
+	Product      string
+	Collection   string
+	Operation    string
+	Host         string
+	PortPathOrID string
+}
+
+type externalMetricKey struct {
+	Host                    string
+	ExternalCrossProcessID  string
+	ExternalTransactionName string
+}
+
+type datastoreProductMetrics struct {
+	All   string // Datastore/{datastore}/all
+	Web   string // Datastore/{datastore}/allWeb
+	Other string // Datastore/{datastore}/allOther
+}
+
+func datastoreScopedMetric(key DatastoreMetricKey) string {
+	if "" != key.Collection {
+		return datastoreStatementMetric(key)
+	}
+	return datastoreOperationMetric(key)
+}
+
+func datastoreProductMetric(key DatastoreMetricKey) datastoreProductMetrics {
+	d, ok := datastoreProductMetricsCache[key.Product]
+	if ok {
+		return d
+	}
+	return datastoreProductMetrics{
+		All:   "Datastore/" + key.Product + "/all",
+		Web:   "Datastore/" + key.Product + "/allWeb",
+		Other: "Datastore/" + key.Product + "/allOther",
+	}
+}
+
+// Datastore/operation/{datastore}/{operation}
+func datastoreOperationMetric(key DatastoreMetricKey) string {
+	return "Datastore/operation/" + key.Product +
+		"/" + key.Operation
+}
+
+// Datastore/statement/{datastore}/{table}/{operation}
+func datastoreStatementMetric(key DatastoreMetricKey) string {
+	return "Datastore/statement/" + key.Product +
+		"/" + key.Collection +
+		"/" + key.Operation
+}
+
+// Datastore/instance/{datastore}/{host}/{port_path_or_id}
+func datastoreInstanceMetric(key DatastoreMetricKey) string {
+	return "Datastore/instance/" + key.Product +
+		"/" + key.Host +
+		"/" + key.PortPathOrID
+}
+
+// External/{host}/all
+func externalHostMetric(key externalMetricKey) string {
+	return "External/" + key.Host + "/all"
+}
+
+// ExternalApp/{host}/{external_id}/all
+func externalAppMetric(key externalMetricKey) string {
+	return "ExternalApp/" + key.Host +
+		"/" + key.ExternalCrossProcessID + "/all"
+}
+
+// ExternalTransaction/{host}/{external_id}/{external_txnname}
+func externalTransactionMetric(key externalMetricKey) string {
+	return "ExternalTransaction/" + key.Host +
+		"/" + key.ExternalCrossProcessID +
+		"/" + key.ExternalTransactionName
+}

vendor/github.com/newrelic/go-agent/internal/metric_names_datastore.go

@@ -0,0 +1,96 @@
+package internal
+
+var (
+	datastoreProductMetricsCache = map[string]datastoreProductMetrics{
+		"Cassandra": {
+			All:   "Datastore/Cassandra/all",
+			Web:   "Datastore/Cassandra/allWeb",
+			Other: "Datastore/Cassandra/allOther",
+		},
+		"Derby": {
+			All:   "Datastore/Derby/all",
+			Web:   "Datastore/Derby/allWeb",
+			Other: "Datastore/Derby/allOther",
+		},
+		"Elasticsearch": {
+			All:   "Datastore/Elasticsearch/all",
+			Web:   "Datastore/Elasticsearch/allWeb",
+			Other: "Datastore/Elasticsearch/allOther",
+		},
+		"Firebird": {
+			All:   "Datastore/Firebird/all",
+			Web:   "Datastore/Firebird/allWeb",
+			Other: "Datastore/Firebird/allOther",
+		},
+		"IBMDB2": {
+			All:   "Datastore/IBMDB2/all",
+			Web:   "Datastore/IBMDB2/allWeb",
+			Other: "Datastore/IBMDB2/allOther",
+		},
+		"Informix": {
+			All:   "Datastore/Informix/all",
+			Web:   "Datastore/Informix/allWeb",
+			Other: "Datastore/Informix/allOther",
+		},
+		"Memcached": {
+			All:   "Datastore/Memcached/all",
+			Web:   "Datastore/Memcached/allWeb",
+			Other: "Datastore/Memcached/allOther",
+		},
+		"MongoDB": {
+			All:   "Datastore/MongoDB/all",
+			Web:   "Datastore/MongoDB/allWeb",
+			Other: "Datastore/MongoDB/allOther",
+		},
+		"MySQL": {
+			All:   "Datastore/MySQL/all",
+			Web:   "Datastore/MySQL/allWeb",
+			Other: "Datastore/MySQL/allOther",
+		},
+		"MSSQL": {
+			All:   "Datastore/MSSQL/all",
+			Web:   "Datastore/MSSQL/allWeb",
+			Other: "Datastore/MSSQL/allOther",
+		},
+		"Oracle": {
+			All:   "Datastore/Oracle/all",
+			Web:   "Datastore/Oracle/allWeb",
+			Other: "Datastore/Oracle/allOther",
+		},
+		"Postgres": {
+			All:   "Datastore/Postgres/all",
+			Web:   "Datastore/Postgres/allWeb",
+			Other: "Datastore/Postgres/allOther",
+		},
+		"Redis": {
+			All:   "Datastore/Redis/all",
+			Web:   "Datastore/Redis/allWeb",
+			Other: "Datastore/Redis/allOther",
+		},
+		"Solr": {
+			All:   "Datastore/Solr/all",
+			Web:   "Datastore/Solr/allWeb",
+			Other: "Datastore/Solr/allOther",
+		},
+		"SQLite": {
+			All:   "Datastore/SQLite/all",
+			Web:   "Datastore/SQLite/allWeb",
+			Other: "Datastore/SQLite/allOther",
+		},
+		"CouchDB": {
+			All:   "Datastore/CouchDB/all",
+			Web:   "Datastore/CouchDB/allWeb",
+			Other: "Datastore/CouchDB/allOther",
+		},
+		"Riak": {
+			All:   "Datastore/Riak/all",
+			Web:   "Datastore/Riak/allWeb",
+			Other: "Datastore/Riak/allOther",
+		},
+		"VoltDB": {
+			All:   "Datastore/VoltDB/all",
+			Web:   "Datastore/VoltDB/allWeb",
+			Other: "Datastore/VoltDB/allOther",
+		},
+	}
+)

vendor/github.com/newrelic/go-agent/internal/metric_rules.go

@@ -0,0 +1,163 @@
+package internal
+
+import (
+	"encoding/json"
+	"regexp"
+	"sort"
+	"strings"
+)
+
+type ruleResult int
+
+const (
+	ruleChanged ruleResult = iota
+	ruleUnchanged
+	ruleIgnore
+)
+
+type metricRule struct {
+	// 'Ignore' indicates if the entire transaction should be discarded if
+	// there is a match.  This field is only used by "url_rules" and
+	// "transaction_name_rules", not "metric_name_rules".
+	Ignore              bool   `json:"ignore"`
+	EachSegment         bool   `json:"each_segment"`
+	ReplaceAll          bool   `json:"replace_all"`
+	Terminate           bool   `json:"terminate_chain"`
+	Order               int    `json:"eval_order"`
+	OriginalReplacement string `json:"replacement"`
+	RawExpr             string `json:"match_expression"`
+
+	// Go's regexp backreferences use '${1}' instead of the Perlish '\1', so
+	// we transform the replacement string into the Go syntax and store it
+	// here.
+	TransformedReplacement string
+	re                     *regexp.Regexp
+}
+
+type metricRules []*metricRule
+
+// Go's regexp backreferences use `${1}` instead of the Perlish `\1`, so we must
+// transform the replacement string.  This is non-trivial: `\1` is a
+// backreference but `\\1` is not.  Rather than count the number of back slashes
+// preceding the digit, we simply skip rules with tricky replacements.
+var (
+	transformReplacementAmbiguous   = regexp.MustCompile(`\\\\([0-9]+)`)
+	transformReplacementRegex       = regexp.MustCompile(`\\([0-9]+)`)
+	transformReplacementReplacement = "$${${1}}"
+)
+
+func (rules *metricRules) UnmarshalJSON(data []byte) (err error) {
+	var raw []*metricRule
+
+	if err := json.Unmarshal(data, &raw); nil != err {
+		return err
+	}
+
+	valid := make(metricRules, 0, len(raw))
+
+	for _, r := range raw {
+		re, err := regexp.Compile("(?i)" + r.RawExpr)
+		if err != nil {
+			// TODO
+			// Warn("unable to compile rule", {
+			// 	"match_expression": r.RawExpr,
+			// 	"error":            err.Error(),
+			// })
+			continue
+		}
+
+		if transformReplacementAmbiguous.MatchString(r.OriginalReplacement) {
+			// TODO
+			// Warn("unable to transform replacement", {
+			// 	"match_expression": r.RawExpr,
+			// 	"replacement":      r.OriginalReplacement,
+			// })
+			continue
+		}
+
+		r.re = re
+		r.TransformedReplacement = transformReplacementRegex.ReplaceAllString(r.OriginalReplacement,
+			transformReplacementReplacement)
+		valid = append(valid, r)
+	}
+
+	sort.Sort(valid)
+
+	*rules = valid
+	return nil
+}
+
+func (rules metricRules) Len() int {
+	return len(rules)
+}
+
+// Rules should be applied in increasing order
+func (rules metricRules) Less(i, j int) bool {
+	return rules[i].Order < rules[j].Order
+}
+func (rules metricRules) Swap(i, j int) {
+	rules[i], rules[j] = rules[j], rules[i]
+}
+
+func replaceFirst(re *regexp.Regexp, s string, replacement string) string {
+	// Note that ReplaceAllStringFunc cannot be used here since it does
+	// not replace $1 placeholders.
+	loc := re.FindStringIndex(s)
+	if nil == loc {
+		return s
+	}
+	firstMatch := s[loc[0]:loc[1]]
+	firstMatchReplaced := re.ReplaceAllString(firstMatch, replacement)
+	return s[0:loc[0]] + firstMatchReplaced + s[loc[1]:]
+}
+
+func (r *metricRule) apply(s string) (ruleResult, string) {
+	// Rules are strange, and there is no spec.
+	// This code attempts to duplicate the logic of the PHP agent.
+	// Ambiguity abounds.
+
+	if r.Ignore {
+		if r.re.MatchString(s) {
+			return ruleIgnore, ""
+		}
+		return ruleUnchanged, s
+	}
+
+	var out string
+
+	if r.ReplaceAll {
+		out = r.re.ReplaceAllString(s, r.TransformedReplacement)
+	} else if r.EachSegment {
+		segments := strings.Split(string(s), "/")
+		applied := make([]string, len(segments))
+		for i, segment := range segments {
+			applied[i] = replaceFirst(r.re, segment, r.TransformedReplacement)
+		}
+		out = strings.Join(applied, "/")
+	} else {
+		out = replaceFirst(r.re, s, r.TransformedReplacement)
+	}
+
+	if out == s {
+		return ruleUnchanged, out
+	}
+	return ruleChanged, out
+}
+
+func (rules metricRules) Apply(input string) string {
+	var res ruleResult
+	s := input
+
+	for _, rule := range rules {
+		res, s = rule.apply(s)
+
+		if ruleIgnore == res {
+			return ""
+		}
+		if (ruleChanged == res) && rule.Terminate {
+			break
+		}
+	}
+
+	return s
+}

vendor/github.com/newrelic/go-agent/internal/metrics.go

@@ -0,0 +1,258 @@
+package internal
+
+import (
+	"bytes"
+	"time"
+
+	"github.com/newrelic/go-agent/internal/jsonx"
+)
+
+type metricForce int
+
+const (
+	forced metricForce = iota
+	unforced
+)
+
+type metricID struct {
+	Name  string `json:"name"`
+	Scope string `json:"scope,omitempty"`
+}
+
+type metricData struct {
+	// These values are in the units expected by the collector.
+	countSatisfied  float64 // Seconds, or count for Apdex
+	totalTolerated  float64 // Seconds, or count for Apdex
+	exclusiveFailed float64 // Seconds, or count for Apdex
+	min             float64 // Seconds
+	max             float64 // Seconds
+	sumSquares      float64 // Seconds**2, or 0 for Apdex
+}
+
+func metricDataFromDuration(duration, exclusive time.Duration) metricData {
+	ds := duration.Seconds()
+	return metricData{
+		countSatisfied:  1,
+		totalTolerated:  ds,
+		exclusiveFailed: exclusive.Seconds(),
+		min:             ds,
+		max:             ds,
+		sumSquares:      ds * ds,
+	}
+}
+
+type metric struct {
+	forced metricForce
+	data   metricData
+}
+
+type metricTable struct {
+	metricPeriodStart time.Time
+	failedHarvests    int
+	maxTableSize      int // After this max is reached, only forced metrics are added
+	numDropped        int // Number of unforced metrics dropped due to full table
+	metrics           map[metricID]*metric
+}
+
+func newMetricTable(maxTableSize int, now time.Time) *metricTable {
+	return &metricTable{
+		metricPeriodStart: now,
+		metrics:           make(map[metricID]*metric),
+		maxTableSize:      maxTableSize,
+		failedHarvests:    0,
+	}
+}
+
+func (mt *metricTable) full() bool {
+	return len(mt.metrics) >= mt.maxTableSize
+}
+
+func (data *metricData) aggregate(src metricData) {
+	data.countSatisfied += src.countSatisfied
+	data.totalTolerated += src.totalTolerated
+	data.exclusiveFailed += src.exclusiveFailed
+
+	if src.min < data.min {
+		data.min = src.min
+	}
+	if src.max > data.max {
+		data.max = src.max
+	}
+
+	data.sumSquares += src.sumSquares
+}
+
+func (mt *metricTable) mergeMetric(id metricID, m metric) {
+	if to := mt.metrics[id]; nil != to {
+		to.data.aggregate(m.data)
+		return
+	}
+
+	if mt.full() && (unforced == m.forced) {
+		mt.numDropped++
+		return
+	}
+	// NOTE: `new` is used in place of `&m` since the latter will make `m`
+	// get heap allocated regardless of whether or not this line gets
+	// reached (running go version go1.5 darwin/amd64).  See
+	// BenchmarkAddingSameMetrics.
+	alloc := new(metric)
+	*alloc = m
+	mt.metrics[id] = alloc
+}
+
+func (mt *metricTable) mergeFailed(from *metricTable) {
+	fails := from.failedHarvests + 1
+	if fails >= failedMetricAttemptsLimit {
+		return
+	}
+	if from.metricPeriodStart.Before(mt.metricPeriodStart) {
+		mt.metricPeriodStart = from.metricPeriodStart
+	}
+	mt.failedHarvests = fails
+	mt.merge(from, "")
+}
+
+func (mt *metricTable) merge(from *metricTable, newScope string) {
+	if "" == newScope {
+		for id, m := range from.metrics {
+			mt.mergeMetric(id, *m)
+		}
+	} else {
+		for id, m := range from.metrics {
+			mt.mergeMetric(metricID{Name: id.Name, Scope: newScope}, *m)
+		}
+	}
+}
+
+func (mt *metricTable) add(name, scope string, data metricData, force metricForce) {
+	mt.mergeMetric(metricID{Name: name, Scope: scope}, metric{data: data, forced: force})
+}
+
+func (mt *metricTable) addCount(name string, count float64, force metricForce) {
+	mt.add(name, "", metricData{countSatisfied: count}, force)
+}
+
+func (mt *metricTable) addSingleCount(name string, force metricForce) {
+	mt.addCount(name, float64(1), force)
+}
+
+func (mt *metricTable) addDuration(name, scope string, duration, exclusive time.Duration, force metricForce) {
+	mt.add(name, scope, metricDataFromDuration(duration, exclusive), force)
+}
+
+func (mt *metricTable) addValueExclusive(name, scope string, total, exclusive float64, force metricForce) {
+	data := metricData{
+		countSatisfied:  1,
+		totalTolerated:  total,
+		exclusiveFailed: exclusive,
+		min:             total,
+		max:             total,
+		sumSquares:      total * total,
+	}
+	mt.add(name, scope, data, force)
+}
+
+func (mt *metricTable) addValue(name, scope string, total float64, force metricForce) {
+	mt.addValueExclusive(name, scope, total, total, force)
+}
+
+func (mt *metricTable) addApdex(name, scope string, apdexThreshold time.Duration, zone ApdexZone, force metricForce) {
+	apdexSeconds := apdexThreshold.Seconds()
+	data := metricData{min: apdexSeconds, max: apdexSeconds}
+
+	switch zone {
+	case ApdexSatisfying:
+		data.countSatisfied = 1
+	case ApdexTolerating:
+		data.totalTolerated = 1
+	case ApdexFailing:
+		data.exclusiveFailed = 1
+	}
+
+	mt.add(name, scope, data, force)
+}
+
+func (mt *metricTable) CollectorJSON(agentRunID string, now time.Time) ([]byte, error) {
+	if 0 == len(mt.metrics) {
+		return nil, nil
+	}
+	estimatedBytesPerMetric := 128
+	estimatedLen := len(mt.metrics) * estimatedBytesPerMetric
+	buf := bytes.NewBuffer(make([]byte, 0, estimatedLen))
+	buf.WriteByte('[')
+
+	jsonx.AppendString(buf, agentRunID)
+	buf.WriteByte(',')
+	jsonx.AppendInt(buf, mt.metricPeriodStart.Unix())
+	buf.WriteByte(',')
+	jsonx.AppendInt(buf, now.Unix())
+	buf.WriteByte(',')
+
+	buf.WriteByte('[')
+	first := true
+	for id, metric := range mt.metrics {
+		if first {
+			first = false
+		} else {
+			buf.WriteByte(',')
+		}
+		buf.WriteByte('[')
+		buf.WriteByte('{')
+		buf.WriteString(`"name":`)
+		jsonx.AppendString(buf, id.Name)
+		if id.Scope != "" {
+			buf.WriteString(`,"scope":`)
+			jsonx.AppendString(buf, id.Scope)
+		}
+		buf.WriteByte('}')
+		buf.WriteByte(',')
+
+		jsonx.AppendFloatArray(buf,
+			metric.data.countSatisfied,
+			metric.data.totalTolerated,
+			metric.data.exclusiveFailed,
+			metric.data.min,
+			metric.data.max,
+			metric.data.sumSquares)
+
+		buf.WriteByte(']')
+	}
+	buf.WriteByte(']')
+
+	buf.WriteByte(']')
+	return buf.Bytes(), nil
+}
+
+func (mt *metricTable) Data(agentRunID string, harvestStart time.Time) ([]byte, error) {
+	return mt.CollectorJSON(agentRunID, harvestStart)
+}
+func (mt *metricTable) MergeIntoHarvest(h *Harvest) {
+	h.Metrics.mergeFailed(mt)
+}
+
+func (mt *metricTable) ApplyRules(rules metricRules) *metricTable {
+	if nil == rules {
+		return mt
+	}
+	if len(rules) == 0 {
+		return mt
+	}
+
+	applied := newMetricTable(mt.maxTableSize, mt.metricPeriodStart)
+	cache := make(map[string]string)
+
+	for id, m := range mt.metrics {
+		out, ok := cache[id.Name]
+		if !ok {
+			out = rules.Apply(id.Name)
+			cache[id.Name] = out
+		}
+
+		if "" != out {
+			applied.mergeMetric(metricID{Name: out, Scope: id.Scope}, *m)
+		}
+	}
+
+	return applied
+}

vendor/github.com/newrelic/go-agent/internal/queuing.go

@@ -0,0 +1,72 @@
+package internal
+
+import (
+	"net/http"
+	"strconv"
+	"strings"
+	"time"
+)
+
+const (
+	xRequestStart = "X-Request-Start"
+	xQueueStart   = "X-Queue-Start"
+)
+
+var (
+	earliestAcceptableSeconds = time.Date(2000, time.January, 1, 0, 0, 0, 0, time.UTC).Unix()
+	latestAcceptableSeconds   = time.Date(2050, time.January, 1, 0, 0, 0, 0, time.UTC).Unix()
+)
+
+func checkQueueTimeSeconds(secondsFloat float64) time.Time {
+	seconds := int64(secondsFloat)
+	nanos := int64((secondsFloat - float64(seconds)) * (1000.0 * 1000.0 * 1000.0))
+	if seconds > earliestAcceptableSeconds && seconds < latestAcceptableSeconds {
+		return time.Unix(seconds, nanos)
+	}
+	return time.Time{}
+}
+
+func parseQueueTime(s string) time.Time {
+	f, err := strconv.ParseFloat(s, 64)
+	if nil != err {
+		return time.Time{}
+	}
+	if f <= 0 {
+		return time.Time{}
+	}
+
+	// try microseconds
+	if t := checkQueueTimeSeconds(f / (1000.0 * 1000.0)); !t.IsZero() {
+		return t
+	}
+	// try milliseconds
+	if t := checkQueueTimeSeconds(f / (1000.0)); !t.IsZero() {
+		return t
+	}
+	// try seconds
+	if t := checkQueueTimeSeconds(f); !t.IsZero() {
+		return t
+	}
+	return time.Time{}
+}
+
+// QueueDuration TODO
+func QueueDuration(hdr http.Header, txnStart time.Time) time.Duration {
+	s := hdr.Get(xQueueStart)
+	if "" == s {
+		s = hdr.Get(xRequestStart)
+	}
+	if "" == s {
+		return 0
+	}
+
+	s = strings.TrimPrefix(s, "t=")
+	qt := parseQueueTime(s)
+	if qt.IsZero() {
+		return 0
+	}
+	if qt.After(txnStart) {
+		return 0
+	}
+	return txnStart.Sub(qt)
+}

vendor/github.com/newrelic/go-agent/internal/sampler.go

@@ -0,0 +1,145 @@
+package internal
+
+import (
+	"runtime"
+	"time"
+
+	"github.com/newrelic/go-agent/internal/logger"
+	"github.com/newrelic/go-agent/internal/sysinfo"
+)
+
+// Sample is a system/runtime snapshot.
+type Sample struct {
+	when         time.Time
+	memStats     runtime.MemStats
+	usage        sysinfo.Usage
+	numGoroutine int
+	numCPU       int
+}
+
+func bytesToMebibytesFloat(bts uint64) float64 {
+	return float64(bts) / (1024 * 1024)
+}
+
+// GetSample gathers a new Sample.
+func GetSample(now time.Time, lg logger.Logger) *Sample {
+	s := Sample{
+		when:         now,
+		numGoroutine: runtime.NumGoroutine(),
+		numCPU:       runtime.NumCPU(),
+	}
+
+	if usage, err := sysinfo.GetUsage(); err == nil {
+		s.usage = usage
+	} else {
+		lg.Warn("unable to usage", map[string]interface{}{
+			"error": err.Error(),
+		})
+	}
+
+	runtime.ReadMemStats(&s.memStats)
+
+	return &s
+}
+
+type cpuStats struct {
+	used     time.Duration
+	fraction float64 // used / (elapsed * numCPU)
+}
+
+// Stats contains system information for a period of time.
+type Stats struct {
+	numGoroutine    int
+	allocBytes      uint64
+	heapObjects     uint64
+	user            cpuStats
+	system          cpuStats
+	gcPauseFraction float64
+	deltaNumGC      uint32
+	deltaPauseTotal time.Duration
+	minPause        time.Duration
+	maxPause        time.Duration
+}
+
+// Samples is used as the parameter to GetStats to avoid mixing up the previous
+// and current sample.
+type Samples struct {
+	Previous *Sample
+	Current  *Sample
+}
+
+// GetStats combines two Samples into a Stats.
+func GetStats(ss Samples) Stats {
+	cur := ss.Current
+	prev := ss.Previous
+	elapsed := cur.when.Sub(prev.when)
+
+	s := Stats{
+		numGoroutine: cur.numGoroutine,
+		allocBytes:   cur.memStats.Alloc,
+		heapObjects:  cur.memStats.HeapObjects,
+	}
+
+	// CPU Utilization
+	totalCPUSeconds := elapsed.Seconds() * float64(cur.numCPU)
+	if prev.usage.User != 0 && cur.usage.User > prev.usage.User {
+		s.user.used = cur.usage.User - prev.usage.User
+		s.user.fraction = s.user.used.Seconds() / totalCPUSeconds
+	}
+	if prev.usage.System != 0 && cur.usage.System > prev.usage.System {
+		s.system.used = cur.usage.System - prev.usage.System
+		s.system.fraction = s.system.used.Seconds() / totalCPUSeconds
+	}
+
+	// GC Pause Fraction
+	deltaPauseTotalNs := cur.memStats.PauseTotalNs - prev.memStats.PauseTotalNs
+	frac := float64(deltaPauseTotalNs) / float64(elapsed.Nanoseconds())
+	s.gcPauseFraction = frac
+
+	// GC Pauses
+	if deltaNumGC := cur.memStats.NumGC - prev.memStats.NumGC; deltaNumGC > 0 {
+		// In case more than 256 pauses have happened between samples
+		// and we are examining a subset of the pauses, we ensure that
+		// the min and max are not on the same side of the average by
+		// using the average as the starting min and max.
+		maxPauseNs := deltaPauseTotalNs / uint64(deltaNumGC)
+		minPauseNs := deltaPauseTotalNs / uint64(deltaNumGC)
+		for i := prev.memStats.NumGC + 1; i <= cur.memStats.NumGC; i++ {
+			pause := cur.memStats.PauseNs[(i+255)%256]
+			if pause > maxPauseNs {
+				maxPauseNs = pause
+			}
+			if pause < minPauseNs {
+				minPauseNs = pause
+			}
+		}
+		s.deltaPauseTotal = time.Duration(deltaPauseTotalNs) * time.Nanosecond
+		s.deltaNumGC = deltaNumGC
+		s.minPause = time.Duration(minPauseNs) * time.Nanosecond
+		s.maxPause = time.Duration(maxPauseNs) * time.Nanosecond
+	}
+
+	return s
+}
+
+// MergeIntoHarvest implements Harvestable.
+func (s Stats) MergeIntoHarvest(h *Harvest) {
+	h.Metrics.addValue(heapObjectsAllocated, "", float64(s.heapObjects), forced)
+	h.Metrics.addValue(runGoroutine, "", float64(s.numGoroutine), forced)
+	h.Metrics.addValueExclusive(memoryPhysical, "", bytesToMebibytesFloat(s.allocBytes), 0, forced)
+	h.Metrics.addValueExclusive(cpuUserUtilization, "", s.user.fraction, 0, forced)
+	h.Metrics.addValueExclusive(cpuSystemUtilization, "", s.system.fraction, 0, forced)
+	h.Metrics.addValue(cpuUserTime, "", s.user.used.Seconds(), forced)
+	h.Metrics.addValue(cpuSystemTime, "", s.system.used.Seconds(), forced)
+	h.Metrics.addValueExclusive(gcPauseFraction, "", s.gcPauseFraction, 0, forced)
+	if s.deltaNumGC > 0 {
+		h.Metrics.add(gcPauses, "", metricData{
+			countSatisfied:  float64(s.deltaNumGC),
+			totalTolerated:  s.deltaPauseTotal.Seconds(),
+			exclusiveFailed: 0,
+			min:             s.minPause.Seconds(),
+			max:             s.maxPause.Seconds(),
+			sumSquares:      s.deltaPauseTotal.Seconds() * s.deltaPauseTotal.Seconds(),
+		}, forced)
+	}
+}

vendor/github.com/newrelic/go-agent/internal/segment_terms.go

@@ -0,0 +1,145 @@
+package internal
+
+// https://newrelic.atlassian.net/wiki/display/eng/Language+agent+transaction+segment+terms+rules
+
+import (
+	"encoding/json"
+	"strings"
+)
+
+const (
+	placeholder = "*"
+	separator   = "/"
+)
+
+type segmentRule struct {
+	Prefix   string   `json:"prefix"`
+	Terms    []string `json:"terms"`
+	TermsMap map[string]struct{}
+}
+
+// segmentRules is keyed by each segmentRule's Prefix field with any trailing
+// slash removed.
+type segmentRules map[string]*segmentRule
+
+func buildTermsMap(terms []string) map[string]struct{} {
+	m := make(map[string]struct{}, len(terms))
+	for _, t := range terms {
+		m[t] = struct{}{}
+	}
+	return m
+}
+
+func (rules *segmentRules) UnmarshalJSON(b []byte) error {
+	var raw []*segmentRule
+
+	if err := json.Unmarshal(b, &raw); nil != err {
+		return err
+	}
+
+	rs := make(map[string]*segmentRule)
+
+	for _, rule := range raw {
+		prefix := strings.TrimSuffix(rule.Prefix, "/")
+		if len(strings.Split(prefix, "/")) != 2 {
+			// TODO
+			// Warn("invalid segment term rule prefix",
+			// 	{"prefix": rule.Prefix})
+			continue
+		}
+
+		if nil == rule.Terms {
+			// TODO
+			// Warn("segment term rule has missing terms",
+			// 	{"prefix": rule.Prefix})
+			continue
+		}
+
+		rule.TermsMap = buildTermsMap(rule.Terms)
+
+		rs[prefix] = rule
+	}
+
+	*rules = rs
+	return nil
+}
+
+func (rule *segmentRule) apply(name string) string {
+	if !strings.HasPrefix(name, rule.Prefix) {
+		return name
+	}
+
+	s := strings.TrimPrefix(name, rule.Prefix)
+
+	leadingSlash := ""
+	if strings.HasPrefix(s, separator) {
+		leadingSlash = separator
+		s = strings.TrimPrefix(s, separator)
+	}
+
+	if "" != s {
+		segments := strings.Split(s, separator)
+
+		for i, segment := range segments {
+			_, whitelisted := rule.TermsMap[segment]
+			if whitelisted {
+				segments[i] = segment
+			} else {
+				segments[i] = placeholder
+			}
+		}
+
+		segments = collapsePlaceholders(segments)
+		s = strings.Join(segments, separator)
+	}
+
+	return rule.Prefix + leadingSlash + s
+}
+
+func (rules segmentRules) apply(name string) string {
+	if nil == rules {
+		return name
+	}
+
+	rule, ok := rules[firstTwoSegments(name)]
+	if !ok {
+		return name
+	}
+
+	return rule.apply(name)
+}
+
+func firstTwoSegments(name string) string {
+	firstSlashIdx := strings.Index(name, separator)
+	if firstSlashIdx == -1 {
+		return name
+	}
+
+	secondSlashIdx := strings.Index(name[firstSlashIdx+1:], separator)
+	if secondSlashIdx == -1 {
+		return name
+	}
+
+	return name[0 : firstSlashIdx+secondSlashIdx+1]
+}
+
+func collapsePlaceholders(segments []string) []string {
+	j := 0
+	prevStar := false
+	for i := 0; i < len(segments); i++ {
+		segment := segments[i]
+		if placeholder == segment {
+			if prevStar {
+				continue
+			}
+			segments[j] = placeholder
+			j++
+			prevStar = true
+		} else {
+			segments[j] = segment
+			j++
+			prevStar = false
+		}
+	}
+	return segments[0:j]
+}

vendor/github.com/newrelic/go-agent/internal/slow_queries.go

@@ -0,0 +1,254 @@
+package internal
+
+import (
+	"bytes"
+	"container/heap"
+	"hash/fnv"
+	"time"
+
+	"github.com/newrelic/go-agent/internal/jsonx"
+)
+
+type queryParameters map[string]interface{}
+
+func vetQueryParameters(params map[string]interface{}) queryParameters {
+	if nil == params {
+		return nil
+	}
+	// Copying the parameters into a new map is safer than modifying the map
+	// from the customer.
+	vetted := make(map[string]interface{})
+	for key, val := range params {
+		if err := validAttributeKey(key); nil != err {
+			continue
+		}
+		val = truncateStringValueIfLongInterface(val)
+		if err := valueIsValid(val); nil != err {
+			continue
+		}
+		vetted[key] = val
+	}
+	return queryParameters(vetted)
+}
+
+func (q queryParameters) WriteJSON(buf *bytes.Buffer) {
+	buf.WriteByte('{')
+	w := jsonFieldsWriter{buf: buf}
+	for key, val := range q {
+		writeAttributeValueJSON(&w, key, val)
+	}
+	buf.WriteByte('}')
+}
+
+// https://source.datanerd.us/agents/agent-specs/blob/master/Slow-SQLs-LEGACY.md
+
+// slowQueryInstance represents a single datastore call.
+type slowQueryInstance struct {
+	// Fields populated right after the datastore segment finishes:
+
+	Duration           time.Duration
+	DatastoreMetric    string
+	ParameterizedQuery string
+	QueryParameters    queryParameters
+	Host               string
+	PortPathOrID       string
+	DatabaseName       string
+	StackTrace         *StackTrace
+
+	// Fields populated when merging into the harvest:
+
+	TxnName string
+	TxnURL  string
+}
+
+// Aggregation is performed to avoid reporting multiple slow queries with same
+// query string.  Since some datastore segments may be below the slow query
+// threshold, the aggregation fields Count, Total, and Min should be taken with
+// a grain of salt.
+type slowQuery struct {
+	Count int32         // number of times the query has been observed
+	Total time.Duration // cummulative duration
+	Min   time.Duration // minimum observed duration
+
+	// When Count > 1, slowQueryInstance contains values from the slowest
+	// observation.
+	slowQueryInstance
+}
+
+type slowQueries struct {
+	priorityQueue []*slowQuery
+	// lookup maps query strings to indices in the priorityQueue
+	lookup map[string]int
+}
+
+func (slows *slowQueries) Len() int {
+	return len(slows.priorityQueue)
+}
+func (slows *slowQueries) Less(i, j int) bool {
+	pq := slows.priorityQueue
+	return pq[i].Duration < pq[j].Duration
+}
+func (slows *slowQueries) Swap(i, j int) {
+	pq := slows.priorityQueue
+	si := pq[i]
+	sj := pq[j]
+	pq[i], pq[j] = pq[j], pq[i]
+	slows.lookup[si.ParameterizedQuery] = j
+	slows.lookup[sj.ParameterizedQuery] = i
+}
+
+// Push and Pop are unused: only heap.Init and heap.Fix are used.
+func (slows *slowQueries) Push(x interface{}) {}
+func (slows *slowQueries) Pop() interface{}   { return nil }
+
+func newSlowQueries(max int) *slowQueries {
+	return &slowQueries{
+		lookup:        make(map[string]int, max),
+		priorityQueue: make([]*slowQuery, 0, max),
+	}
+}
+
+// Merge is used to merge slow queries from the transaction into the harvest.
+func (slows *slowQueries) Merge(other *slowQueries, txnName, txnURL string) {
+	for _, s := range other.priorityQueue {
+		cp := *s
+		cp.TxnName = txnName
+		cp.TxnURL = txnURL
+		slows.observe(cp)
+	}
+}
+
+// merge aggregates the observations from two slow queries with the same Query.
+func (slow *slowQuery) merge(other slowQuery) {
+	slow.Count += other.Count
+	slow.Total += other.Total
+
+	if other.Min < slow.Min {
+		slow.Min = other.Min
+	}
+	if other.Duration > slow.Duration {
+		slow.slowQueryInstance = other.slowQueryInstance
+	}
+}
+
+func (slows *slowQueries) observeInstance(slow slowQueryInstance) {
+	slows.observe(slowQuery{
+		Count:             1,
+		Total:             slow.Duration,
+		Min:               slow.Duration,
+		slowQueryInstance: slow,
+	})
+}
+
+func (slows *slowQueries) insertAtIndex(slow slowQuery, idx int) {
+	cpy := new(slowQuery)
+	*cpy = slow
+	slows.priorityQueue[idx] = cpy
+	slows.lookup[slow.ParameterizedQuery] = idx
+	heap.Fix(slows, idx)
+}
+
+func (slows *slowQueries) observe(slow slowQuery) {
+	// Has the query has previously been observed?
+	if idx, ok := slows.lookup[slow.ParameterizedQuery]; ok {
+		slows.priorityQueue[idx].merge(slow)
+		heap.Fix(slows, idx)
+		return
+	}
+	// Has the collection reached max capacity?
+	if len(slows.priorityQueue) < cap(slows.priorityQueue) {
+		idx := len(slows.priorityQueue)
+		slows.priorityQueue = slows.priorityQueue[0 : idx+1]
+		slows.insertAtIndex(slow, idx)
+		return
+	}
+	// Is this query slower than the existing fastest?
+	fastest := slows.priorityQueue[0]
+	if slow.Duration > fastest.Duration {
+		delete(slows.lookup, fastest.ParameterizedQuery)
+		slows.insertAtIndex(slow, 0)
+		return
+	}
+}
+
+// The third element of the slow query JSON should be a hash of the query
+// string.  This hash may be used by backend services to aggregate queries which
+// have the have the same query string.  It is unknown if this actually used.
+func makeSlowQueryID(query string) uint32 {
+	h := fnv.New32a()
+	h.Write([]byte(query))
+	return h.Sum32()
+}
+
+func (slow *slowQuery) WriteJSON(buf *bytes.Buffer) {
+	buf.WriteByte('[')
+	jsonx.AppendString(buf, slow.TxnName)
+	buf.WriteByte(',')
+	jsonx.AppendString(buf, slow.TxnURL)
+	buf.WriteByte(',')
+	jsonx.AppendInt(buf, int64(makeSlowQueryID(slow.ParameterizedQuery)))
+	buf.WriteByte(',')
+	jsonx.AppendString(buf, slow.ParameterizedQuery)
+	buf.WriteByte(',')
+	jsonx.AppendString(buf, slow.DatastoreMetric)
+	buf.WriteByte(',')
+	jsonx.AppendInt(buf, int64(slow.Count))
+	buf.WriteByte(',')
+	jsonx.AppendFloat(buf, slow.Total.Seconds()*1000.0)
+	buf.WriteByte(',')
+	jsonx.AppendFloat(buf, slow.Min.Seconds()*1000.0)
+	buf.WriteByte(',')
+	jsonx.AppendFloat(buf, slow.Duration.Seconds()*1000.0)
+	buf.WriteByte(',')
+	w := jsonFieldsWriter{buf: buf}
+	buf.WriteByte('{')
+	if "" != slow.Host {
+		w.stringField("host", slow.Host)
+	}
+	if "" != slow.PortPathOrID {
+		w.stringField("port_path_or_id", slow.PortPathOrID)
+	}
+	if "" != slow.DatabaseName {
+		w.stringField("database_name", slow.DatabaseName)
+	}
+	if nil != slow.StackTrace {
+		w.writerField("backtrace", slow.StackTrace)
+	}
+	if nil != slow.QueryParameters {
+		w.writerField("query_parameters", slow.QueryParameters)
+	}
+	buf.WriteByte('}')
+	buf.WriteByte(']')
+}
+
+// WriteJSON marshals the collection of slow queries into JSON according to the
+// schema expected by the collector.
+//
+// Note: This JSON does not contain the agentRunID.  This is for unknown
+// historical reasons. Since the agentRunID is included in the url,
+// its use in the other commands' JSON is redundant (although required).
+func (slows *slowQueries) WriteJSON(buf *bytes.Buffer) {
+	buf.WriteByte('[')
+	buf.WriteByte('[')
+	for idx, s := range slows.priorityQueue {
+		if idx > 0 {
+			buf.WriteByte(',')
+		}
+		s.WriteJSON(buf)
+	}
+	buf.WriteByte(']')
+	buf.WriteByte(']')
+}
+
+func (slows *slowQueries) Data(agentRunID string, harvestStart time.Time) ([]byte, error) {
+	if 0 == len(slows.priorityQueue) {
+		return nil, nil
+	}
+	estimate := 1024 * len(slows.priorityQueue)
+	buf := bytes.NewBuffer(make([]byte, 0, estimate))
+	slows.WriteJSON(buf)
+	return buf.Bytes(), nil
+}
+
+func (slows *slowQueries) MergeIntoHarvest(newHarvest *Harvest) {
+}

vendor/github.com/newrelic/go-agent/internal/stacktrace.go

@@ -0,0 +1,82 @@
+package internal
+
+import (
+	"bytes"
+	"path"
+	"runtime"
+)
+
+// StackTrace is a stack trace.
+type StackTrace struct {
+	callers []uintptr
+	written int
+}
+
+// GetStackTrace returns a new StackTrace.
+func GetStackTrace(skipFrames int) *StackTrace {
+	st := &StackTrace{}
+
+	skip := 2 // skips runtime.Callers and this function
+	skip += skipFrames
+
+	st.callers = make([]uintptr, maxStackTraceFrames)
+	st.written = runtime.Callers(skip, st.callers)
+	st.callers = st.callers[0:st.written]
+
+	return st
+}
+
+func pcToFunc(pc uintptr) (*runtime.Func, uintptr) {
+	// The Golang runtime package documentation says "To look up the file
+	// and line number of the call itself, use pc[i]-1. As an exception to
+	// this rule, if pc[i-1] corresponds to the function runtime.sigpanic,
+	// then pc[i] is the program counter of a faulting instruction and
+	// should be used without any subtraction."
+	//
+	// TODO: Fully understand when this subtraction is necessary.
+	place := pc - 1
+	return runtime.FuncForPC(place), place
+}
+
+func topCallerNameBase(st *StackTrace) string {
+	f, _ := pcToFunc(st.callers[0])
+	if nil == f {
+		return ""
+	}
+	return path.Base(f.Name())
+}
+
+// WriteJSON adds the stack trace to the buffer in the JSON form expected by the
+// collector.
+func (st *StackTrace) WriteJSON(buf *bytes.Buffer) {
+	buf.WriteByte('[')
+	for i, pc := range st.callers {
+		if i > 0 {
+			buf.WriteByte(',')
+		}
+		// Implements the format documented here:
+		// https://source.datanerd.us/agents/agent-specs/blob/master/Stack-Traces.md
+		buf.WriteByte('{')
+		if f, place := pcToFunc(pc); nil != f {
+			name := path.Base(f.Name())
+			file, line := f.FileLine(place)
+
+			w := jsonFieldsWriter{buf: buf}
+			w.stringField("filepath", file)
+			w.stringField("name", name)
+			w.intField("line", int64(line))
+		}
+		buf.WriteByte('}')
+	}
+	buf.WriteByte(']')
+}
+
+// MarshalJSON prepares JSON in the format expected by the collector.
+func (st *StackTrace) MarshalJSON() ([]byte, error) {
+	estimate := 256 * len(st.callers)
+	buf := bytes.NewBuffer(make([]byte, 0, estimate))
+
+	st.WriteJSON(buf)
+
+	return buf.Bytes(), nil
+}

vendor/github.com/newrelic/go-agent/internal/sysinfo/docker.go

@@ -0,0 +1,124 @@
+package sysinfo
+
+import (
+	"bufio"
+	"bytes"
+	"errors"
+	"fmt"
+	"io"
+	"os"
+	"regexp"
+	"runtime"
+)
+
+var (
+	// ErrDockerUnsupported is returned if Docker is not supported on the
+	// platform.
+	ErrDockerUnsupported = errors.New("Docker unsupported on this platform")
+	// ErrDockerNotFound is returned if a Docker ID is not found in
+	// /proc/self/cgroup
+	ErrDockerNotFound = errors.New("Docker ID not found")
+)
+
+// DockerID attempts to detect Docker.
+func DockerID() (string, error) {
+	if "linux" != runtime.GOOS {
+		return "", ErrDockerUnsupported
+	}
+
+	f, err := os.Open("/proc/self/cgroup")
+	if err != nil {
+		return "", err
+	}
+	defer f.Close()
+
+	return parseDockerID(f)
+}
+
+var (
+	dockerIDLength   = 64
+	dockerIDRegexRaw = fmt.Sprintf("^[0-9a-f]{%d}$", dockerIDLength)
+	dockerIDRegex    = regexp.MustCompile(dockerIDRegexRaw)
+)
+
+func parseDockerID(r io.Reader) (string, error) {
+	// Each line in the cgroup file consists of three colon delimited fields.
+	//   1. hierarchy ID  - we don't care about this
+	//   2. subsystems    - comma separated list of cgroup subsystem names
+	//   3. control group - control group to which the process belongs
+	//
+	// Example
+	//   5:cpuacct,cpu,cpuset:/daemons
+
+	for scanner := bufio.NewScanner(r); scanner.Scan(); {
+		line := scanner.Bytes()
+		cols := bytes.SplitN(line, []byte(":"), 3)
+
+		if len(cols) < 3 {
+			continue
+		}
+
+		//  We're only interested in the cpu subsystem.
+		if !isCPUCol(cols[1]) {
+			continue
+		}
+
+		// We're only interested in Docker generated cgroups.
+		// Reference Implementation:
+		// case cpu_cgroup
+		// # docker native driver w/out systemd (fs)
+		// when %r{^/docker/([0-9a-f]+)$}                      then $1
+		// # docker native driver with systemd
+		// when %r{^/system\.slice/docker-([0-9a-f]+)\.scope$} then $1
+		// # docker lxc driver
+		// when %r{^/lxc/([0-9a-f]+)$}                         then $1
+		//
+		var id string
+		if bytes.HasPrefix(cols[2], []byte("/docker/")) {
+			id = string(cols[2][len("/docker/"):])
+		} else if bytes.HasPrefix(cols[2], []byte("/lxc/")) {
+			id = string(cols[2][len("/lxc/"):])
+		} else if bytes.HasPrefix(cols[2], []byte("/system.slice/docker-")) &&
+			bytes.HasSuffix(cols[2], []byte(".scope")) {
+			id = string(cols[2][len("/system.slice/docker-") : len(cols[2])-len(".scope")])
+		} else {
+			continue
+		}
+
+		if err := validateDockerID(id); err != nil {
+			// We can stop searching at this point, the CPU
+			// subsystem should only occur once, and its cgroup is
+			// not docker or not a format we accept.
+			return "", err
+		}
+		return id, nil
+	}
+
+	return "", ErrDockerNotFound
+}
+
+func isCPUCol(col []byte) bool {
+	// Sometimes we have multiple subsystems in one line, as in this example
+	// from:
+	// https://source.datanerd.us/newrelic/cross_agent_tests/blob/master/docker_container_id/docker-1.1.2-native-driver-systemd.txt
+	//
+	// 3:cpuacct,cpu:/system.slice/docker-67f98c9e6188f9c1818672a15dbe46237b6ee7e77f834d40d41c5fb3c2f84a2f.scope
+	splitCSV := func(r rune) bool { return r == ',' }
+	subsysCPU := []byte("cpu")
+
+	for _, subsys := range bytes.FieldsFunc(col, splitCSV) {
+		if bytes.Equal(subsysCPU, subsys) {
+			return true
+		}
+	}
+	return false
+}
+
+func validateDockerID(id string) error {
+	if !dockerIDRegex.MatchString(id) {
+		return fmt.Errorf("%s does not match %s",
+			id, dockerIDRegexRaw)
+	}
+
+	return nil
+}

vendor/github.com/newrelic/go-agent/internal/sysinfo/hostname_generic.go

@@ -0,0 +1,10 @@
+// +build !linux
+
+package sysinfo
+
+import "os"
+
+// Hostname returns the host name.
+func Hostname() (string, error) {
+	return os.Hostname()
+}

vendor/github.com/newrelic/go-agent/internal/sysinfo/hostname_linux.go

@@ -0,0 +1,50 @@
+package sysinfo
+
+import (
+	"os"
+	"syscall"
+)
+
+// Hostname returns the host name.
+func Hostname() (string, error) {
+	// Try the builtin API first, which is designed to match the output of
+	// /bin/hostname, and fallback to uname(2) if that fails to match the
+	// behavior of gethostname(2) as implemented by glibc. On Linux, all
+	// these method should result in the same value because sethostname(2)
+	// limits the hostname to 64 bytes, the same size of the nodename field
+	// returned by uname(2). Note that is correspondence is not true on
+	// other platforms.
+	//
+	// os.Hostname failures should be exceedingly rare, however some systems
+	// configure SELinux to deny read access to /proc/sys/kernel/hostname.
+	// Redhat's OpenShift platform for example. os.Hostname can also fail if
+	// some or all of /proc has been hidden via chroot(2) or manipulation of
+	// the current processes' filesystem namespace via the cgroups APIs.
+	// Docker is an example of a tool that can configure such an
+	// environment.
+	name, err := os.Hostname()
+	if err == nil {
+		return name, nil
+	}
+
+	var uts syscall.Utsname
+	if err2 := syscall.Uname(&uts); err2 != nil {
+		// The man page documents only one possible error for uname(2),
+		// suggesting that as long as the buffer given is valid, the
+		// call will never fail. Return the original error in the hope
+		// it provides more relevant information about why the hostname
+		// can't be retrieved.
+		return "", err
+	}
+
+	// Convert Nodename to a Go string.
+	buf := make([]byte, 0, len(uts.Nodename))
+	for _, c := range uts.Nodename {
+		if c == 0 {
+			break
+		}
+		buf = append(buf, byte(c))
+	}
+
+	return string(buf), nil
+}

vendor/github.com/newrelic/go-agent/internal/sysinfo/memtotal.go

@@ -0,0 +1,40 @@
+package sysinfo
+
+import (
+	"bufio"
+	"errors"
+	"io"
+	"regexp"
+	"strconv"
+)
+
+// BytesToMebibytes converts bytes into mebibytes.
+func BytesToMebibytes(bts uint64) uint64 {
+	return bts / ((uint64)(1024 * 1024))
+}
+
+var (
+	meminfoRe           = regexp.MustCompile(`^MemTotal:\s+([0-9]+)\s+[kK]B$`)
+	errMemTotalNotFound = errors.New("supported MemTotal not found in /proc/meminfo")
+)
+
+// parseProcMeminfo is used to parse Linux's "/proc/meminfo".  It is located
+// here so that the relevant cross agent tests will be run on all platforms.
+func parseProcMeminfo(f io.Reader) (uint64, error) {
+	scanner := bufio.NewScanner(f)
+	for scanner.Scan() {
+		if m := meminfoRe.FindSubmatch(scanner.Bytes()); m != nil {
+			kb, err := strconv.ParseUint(string(m[1]), 10, 64)
+			if err != nil {
+				return 0, err
+			}
+			return kb * 1024, nil
+		}
+	}
+
+	err := scanner.Err()
+	if err == nil {
+		err = errMemTotalNotFound
+	}
+	return 0, err
+}

vendor/github.com/newrelic/go-agent/internal/sysinfo/memtotal_darwin.go

@@ -0,0 +1,29 @@
+package sysinfo
+
+import (
+	"syscall"
+	"unsafe"
+)
+
+// PhysicalMemoryBytes returns the total amount of host memory.
+func PhysicalMemoryBytes() (uint64, error) {
+	mib := []int32{6 /* CTL_HW */, 24 /* HW_MEMSIZE */}
+
+	buf := make([]byte, 8)
+	bufLen := uintptr(8)
+
+	_, _, e1 := syscall.Syscall6(syscall.SYS___SYSCTL,
+		uintptr(unsafe.Pointer(&mib[0])), uintptr(len(mib)),
+		uintptr(unsafe.Pointer(&buf[0])), uintptr(unsafe.Pointer(&bufLen)),
+		uintptr(0), uintptr(0))
+
+	if e1 != 0 {
+		return 0, e1
+	}
+
+	if bufLen != 8 {
+		return 0, syscall.EIO
+	}
+
+	return *(*uint64)(unsafe.Pointer(&buf[0])), nil
+}

vendor/github.com/newrelic/go-agent/internal/sysinfo/memtotal_freebsd.go

@@ -0,0 +1,32 @@
+package sysinfo
+
+import (
+	"syscall"
+	"unsafe"
+)
+
+// PhysicalMemoryBytes returns the total amount of host memory.
+func PhysicalMemoryBytes() (uint64, error) {
+	mib := []int32{6 /* CTL_HW */, 5 /* HW_PHYSMEM */}
+
+	buf := make([]byte, 8)
+	bufLen := uintptr(8)
+
+	_, _, e1 := syscall.Syscall6(syscall.SYS___SYSCTL,
+		uintptr(unsafe.Pointer(&mib[0])), uintptr(len(mib)),
+		uintptr(unsafe.Pointer(&buf[0])), uintptr(unsafe.Pointer(&bufLen)),
+		uintptr(0), uintptr(0))
+
+	if e1 != 0 {
+		return 0, e1
+	}
+
+	switch bufLen {
+	case 4:
+		return uint64(*(*uint32)(unsafe.Pointer(&buf[0]))), nil
+	case 8:
+		return *(*uint64)(unsafe.Pointer(&buf[0])), nil
+	default:
+		return 0, syscall.EIO
+	}
+}

vendor/github.com/newrelic/go-agent/internal/sysinfo/memtotal_linux.go

@@ -0,0 +1,14 @@
+package sysinfo
+
+import "os"
+
+// PhysicalMemoryBytes returns the total amount of host memory.
+func PhysicalMemoryBytes() (uint64, error) {
+	f, err := os.Open("/proc/meminfo")
+	if err != nil {
+		return 0, err
+	}
+	defer f.Close()
+
+	return parseProcMeminfo(f)
+}

vendor/github.com/newrelic/go-agent/internal/sysinfo/memtotal_solaris.go

@@ -0,0 +1,26 @@
+package sysinfo
+
+/*
+#include <unistd.h>
+*/
+import "C"
+
+// PhysicalMemoryBytes returns the total amount of host memory.
+func PhysicalMemoryBytes() (uint64, error) {
+	// The function we're calling on Solaris is
+	// long sysconf(int name);
+	var pages C.long
+	var pagesizeBytes C.long
+	var err error
+
+	pagesizeBytes, err = C.sysconf(C._SC_PAGE_SIZE)
+	if pagesizeBytes < 1 {
+		return 0, err
+	}
+	pages, err = C.sysconf(C._SC_PHYS_PAGES)
+	if pages < 1 {
+		return 0, err
+	}
+
+	return uint64(pages) * uint64(pagesizeBytes), nil
+}

vendor/github.com/newrelic/go-agent/internal/sysinfo/memtotal_windows.go

@@ -0,0 +1,23 @@
+package sysinfo
+
+import (
+	"syscall"
+	"unsafe"
+)
+
+// PhysicalMemoryBytes returns the total amount of host memory.
+func PhysicalMemoryBytes() (uint64, error) {
+	// https://msdn.microsoft.com/en-us/library/windows/desktop/cc300158(v=vs.85).aspx
+	// http://stackoverflow.com/questions/30743070/query-total-physical-memory-in-windows-with-golang
+	mod := syscall.NewLazyDLL("kernel32.dll")
+	proc := mod.NewProc("GetPhysicallyInstalledSystemMemory")
+	var memkb uint64
+
+	ret, _, err := proc.Call(uintptr(unsafe.Pointer(&memkb)))
+	// return value TRUE(1) succeeds, FAILED(0) fails
+	if ret != 1 {
+		return 0, err
+	}
+
+	return memkb * 1024, nil
+}

vendor/github.com/newrelic/go-agent/internal/sysinfo/usage.go

@@ -0,0 +1,11 @@
+package sysinfo
+
+import (
+	"time"
+)
+
+// Usage contains process process times.
+type Usage struct {
+	System time.Duration
+	User   time.Duration
+}

vendor/github.com/newrelic/go-agent/internal/sysinfo/usage_posix.go

@@ -0,0 +1,26 @@
+// +build !windows
+
+package sysinfo
+
+import (
+	"syscall"
+	"time"
+)
+
+func timevalToDuration(tv syscall.Timeval) time.Duration {
+	return time.Duration(tv.Nano()) * time.Nanosecond
+}
+
+// GetUsage gathers process times.
+func GetUsage() (Usage, error) {
+	ru := syscall.Rusage{}
+	err := syscall.Getrusage(syscall.RUSAGE_SELF, &ru)
+	if err != nil {
+		return Usage{}, err
+	}
+
+	return Usage{
+		System: timevalToDuration(ru.Stime),
+		User:   timevalToDuration(ru.Utime),
+	}, nil
+}

vendor/github.com/newrelic/go-agent/internal/sysinfo/usage_windows.go

@@ -0,0 +1,34 @@
+package sysinfo
+
+import (
+	"syscall"
+	"time"
+)
+
+func filetimeToDuration(ft *syscall.Filetime) time.Duration {
+	ns := ft.Nanoseconds()
+	return time.Duration(ns)
+}
+
+// GetUsage gathers process times.
+func GetUsage() (Usage, error) {
+	var creationTime syscall.Filetime
+	var exitTime syscall.Filetime
+	var kernelTime syscall.Filetime
+	var userTime syscall.Filetime
+
+	handle, err := syscall.GetCurrentProcess()
+	if err != nil {
+		return Usage{}, err
+	}
+
+	err = syscall.GetProcessTimes(handle, &creationTime, &exitTime, &kernelTime, &userTime)
+	if err != nil {
+		return Usage{}, err
+	}
+
+	return Usage{
+		System: filetimeToDuration(&kernelTime),
+		User:   filetimeToDuration(&userTime),
+	}, nil
+}

vendor/github.com/newrelic/go-agent/internal/tracing.go

@@ -0,0 +1,413 @@
+package internal
+
+import (
+	"fmt"
+	"net/url"
+	"time"
+
+	"github.com/newrelic/go-agent/internal/sysinfo"
+)
+
+type segmentStamp uint64
+
+type segmentTime struct {
+	Stamp segmentStamp
+	Time  time.Time
+}
+
+// SegmentStartTime is embedded into the top level segments (rather than
+// segmentTime) to minimize the structure sizes to minimize allocations.
+type SegmentStartTime struct {
+	Stamp segmentStamp
+	Depth int
+}
+
+type segmentFrame struct {
+	segmentTime
+	children time.Duration
+}
+
+type segmentEnd struct {
+	valid     bool
+	start     segmentTime
+	stop      segmentTime
+	duration  time.Duration
+	exclusive time.Duration
+}
+
+// Tracer tracks segments.
+type Tracer struct {
+	finishedChildren time.Duration
+	stamp            segmentStamp
+	currentDepth     int
+	stack            []segmentFrame
+
+	customSegments    map[string]*metricData
+	datastoreSegments map[DatastoreMetricKey]*metricData
+	externalSegments  map[externalMetricKey]*metricData
+
+	DatastoreExternalTotals
+
+	TxnTrace
+
+	SlowQueriesEnabled bool
+	SlowQueryThreshold time.Duration
+	SlowQueries        *slowQueries
+}
+
+const (
+	startingStackDepthAlloc   = 128
+	datastoreProductUnknown   = "Unknown"
+	datastoreOperationUnknown = "other"
+)
+
+func (t *Tracer) time(now time.Time) segmentTime {
+	// Update the stamp before using it so that a 0 stamp can be special.
+	t.stamp++
+	return segmentTime{
+		Time:  now,
+		Stamp: t.stamp,
+	}
+}
+
+// TracerRootChildren is used to calculate a transaction's exclusive duration.
+func TracerRootChildren(t *Tracer) time.Duration {
+	var lostChildren time.Duration
+	for i := 0; i < t.currentDepth; i++ {
+		lostChildren += t.stack[i].children
+	}
+	return t.finishedChildren + lostChildren
+}
+
+// StartSegment begins a segment.
+func StartSegment(t *Tracer, now time.Time) SegmentStartTime {
+	if nil == t.stack {
+		t.stack = make([]segmentFrame, startingStackDepthAlloc)
+	}
+	if cap(t.stack) == t.currentDepth {
+		newLimit := 2 * t.currentDepth
+		newStack := make([]segmentFrame, newLimit)
+		copy(newStack, t.stack)
+		t.stack = newStack
+	}
+
+	tm := t.time(now)
+
+	depth := t.currentDepth
+	t.currentDepth++
+	t.stack[depth].children = 0
+	t.stack[depth].segmentTime = tm
+
+	return SegmentStartTime{
+		Stamp: tm.Stamp,
+		Depth: depth,
+	}
+}
+
+func endSegment(t *Tracer, start SegmentStartTime, now time.Time) segmentEnd {
+	var s segmentEnd
+	if 0 == start.Stamp {
+		return s
+	}
+	if start.Depth >= t.currentDepth {
+		return s
+	}
+	if start.Depth < 0 {
+		return s
+	}
+	if start.Stamp != t.stack[start.Depth].Stamp {
+		return s
+	}
+
+	var children time.Duration
+	for i := start.Depth; i < t.currentDepth; i++ {
+		children += t.stack[i].children
+	}
+	s.valid = true
+	s.stop = t.time(now)
+	s.start = t.stack[start.Depth].segmentTime
+	if s.stop.Time.After(s.start.Time) {
+		s.duration = s.stop.Time.Sub(s.start.Time)
+	}
+	if s.duration > children {
+		s.exclusive = s.duration - children
+	}
+
+	// Note that we expect (depth == (t.currentDepth - 1)).  However, if
+	// (depth < (t.currentDepth - 1)), that's ok: could be a panic popped
+	// some stack frames (and the consumer was not using defer).
+	t.currentDepth = start.Depth
+
+	if 0 == t.currentDepth {
+		t.finishedChildren += s.duration
+	} else {
+		t.stack[t.currentDepth-1].children += s.duration
+	}
+	return s
+}
+
+// EndBasicSegment ends a basic segment.
+func EndBasicSegment(t *Tracer, start SegmentStartTime, now time.Time, name string) {
+	end := endSegment(t, start, now)
+	if !end.valid {
+		return
+	}
+	if nil == t.customSegments {
+		t.customSegments = make(map[string]*metricData)
+	}
+	m := metricDataFromDuration(end.duration, end.exclusive)
+	if data, ok := t.customSegments[name]; ok {
+		data.aggregate(m)
+	} else {
+		// Use `new` in place of &m so that m is not
+		// automatically moved to the heap.
+		cpy := new(metricData)
+		*cpy = m
+		t.customSegments[name] = cpy
+	}
+
+	if t.TxnTrace.considerNode(end) {
+		t.TxnTrace.witnessNode(end, customSegmentMetric(name), nil)
+	}
+}
+
+// EndExternalSegment ends an external segment.
+func EndExternalSegment(t *Tracer, start SegmentStartTime, now time.Time, u *url.URL) {
+	end := endSegment(t, start, now)
+	if !end.valid {
+		return
+	}
+	host := HostFromURL(u)
+	if "" == host {
+		host = "unknown"
+	}
+	key := externalMetricKey{
+		Host: host,
+		ExternalCrossProcessID:  "",
+		ExternalTransactionName: "",
+	}
+	if nil == t.externalSegments {
+		t.externalSegments = make(map[externalMetricKey]*metricData)
+	}
+	t.externalCallCount++
+	t.externalDuration += end.duration
+	m := metricDataFromDuration(end.duration, end.exclusive)
+	if data, ok := t.externalSegments[key]; ok {
+		data.aggregate(m)
+	} else {
+		// Use `new` in place of &m so that m is not
+		// automatically moved to the heap.
+		cpy := new(metricData)
+		*cpy = m
+		t.externalSegments[key] = cpy
+	}
+
+	if t.TxnTrace.considerNode(end) {
+		t.TxnTrace.witnessNode(end, externalHostMetric(key), &traceNodeParams{
+			CleanURL: SafeURL(u),
+		})
+	}
+}
+
+// EndDatastoreParams contains the parameters for EndDatastoreSegment.
+type EndDatastoreParams struct {
+	Tracer             *Tracer
+	Start              SegmentStartTime
+	Now                time.Time
+	Product            string
+	Collection         string
+	Operation          string
+	ParameterizedQuery string
+	QueryParameters    map[string]interface{}
+	Host               string
+	PortPathOrID       string
+	Database           string
+}
+
+const (
+	unknownDatastoreHost         = "unknown"
+	unknownDatastorePortPathOrID = "unknown"
+)
+
+var (
+	// ThisHost is the system hostname.
+	ThisHost = func() string {
+		if h, err := sysinfo.Hostname(); nil == err {
+			return h
+		}
+		return unknownDatastoreHost
+	}()
+	hostsToReplace = map[string]struct{}{
+		"localhost":       struct{}{},
+		"127.0.0.1":       struct{}{},
+		"0.0.0.0":         struct{}{},
+		"0:0:0:0:0:0:0:1": struct{}{},
+		"::1":             struct{}{},
+		"0:0:0:0:0:0:0:0": struct{}{},
+		"::":              struct{}{},
+	}
+)
+
+func (t Tracer) slowQueryWorthy(d time.Duration) bool {
+	return t.SlowQueriesEnabled && (d >= t.SlowQueryThreshold)
+}
+
+// EndDatastoreSegment ends a datastore segment.
+func EndDatastoreSegment(p EndDatastoreParams) {
+	end := endSegment(p.Tracer, p.Start, p.Now)
+	if !end.valid {
+		return
+	}
+	if p.Operation == "" {
+		p.Operation = datastoreOperationUnknown
+	}
+	if p.Product == "" {
+		p.Product = datastoreProductUnknown
+	}
+	if p.Host == "" && p.PortPathOrID != "" {
+		p.Host = unknownDatastoreHost
+	}
+	if p.PortPathOrID == "" && p.Host != "" {
+		p.PortPathOrID = unknownDatastorePortPathOrID
+	}
+	if _, ok := hostsToReplace[p.Host]; ok {
+		p.Host = ThisHost
+	}
+
+	// We still want to create a slowQuery if the consumer has not provided
+	// a Query string since the stack trace has value.
+	if p.ParameterizedQuery == "" {
+		collection := p.Collection
+		if "" == collection {
+			collection = "unknown"
+		}
+		p.ParameterizedQuery = fmt.Sprintf(`'%s' on '%s' using '%s'`,
+			p.Operation, collection, p.Product)
+	}
+
+	key := DatastoreMetricKey{
+		Product:      p.Product,
+		Collection:   p.Collection,
+		Operation:    p.Operation,
+		Host:         p.Host,
+		PortPathOrID: p.PortPathOrID,
+	}
+	if nil == p.Tracer.datastoreSegments {
+		p.Tracer.datastoreSegments = make(map[DatastoreMetricKey]*metricData)
+	}
+	p.Tracer.datastoreCallCount++
+	p.Tracer.datastoreDuration += end.duration
+	m := metricDataFromDuration(end.duration, end.exclusive)
+	if data, ok := p.Tracer.datastoreSegments[key]; ok {
+		data.aggregate(m)
+	} else {
+		// Use `new` in place of &m so that m is not
+		// automatically moved to the heap.
+		cpy := new(metricData)
+		*cpy = m
+		p.Tracer.datastoreSegments[key] = cpy
+	}
+
+	scopedMetric := datastoreScopedMetric(key)
+	queryParams := vetQueryParameters(p.QueryParameters)
+
+	if p.Tracer.TxnTrace.considerNode(end) {
+		p.Tracer.TxnTrace.witnessNode(end, scopedMetric, &traceNodeParams{
+			Host:            p.Host,
+			PortPathOrID:    p.PortPathOrID,
+			Database:        p.Database,
+			Query:           p.ParameterizedQuery,
+			queryParameters: queryParams,
+		})
+	}
+
+	if p.Tracer.slowQueryWorthy(end.duration) {
+		if nil == p.Tracer.SlowQueries {
+			p.Tracer.SlowQueries = newSlowQueries(maxTxnSlowQueries)
+		}
+		// Frames to skip:
+		//   this function
+		//   endDatastore
+		//   DatastoreSegment.End
+		skipFrames := 3
+		p.Tracer.SlowQueries.observeInstance(slowQueryInstance{
+			Duration:           end.duration,
+			DatastoreMetric:    scopedMetric,
+			ParameterizedQuery: p.ParameterizedQuery,
+			QueryParameters:    queryParams,
+			Host:               p.Host,
+			PortPathOrID:       p.PortPathOrID,
+			DatabaseName:       p.Database,
+			StackTrace:         GetStackTrace(skipFrames),
+		})
+	}
+}
+
+// MergeBreakdownMetrics creates segment metrics.
+func MergeBreakdownMetrics(t *Tracer, metrics *metricTable, scope string, isWeb bool) {
+	// Custom Segment Metrics
+	for key, data := range t.customSegments {
+		name := customSegmentMetric(key)
+		// Unscoped
+		metrics.add(name, "", *data, unforced)
+		// Scoped
+		metrics.add(name, scope, *data, unforced)
+	}
+
+	// External Segment Metrics
+	for key, data := range t.externalSegments {
+		metrics.add(externalAll, "", *data, forced)
+		if isWeb {
+			metrics.add(externalWeb, "", *data, forced)
+		} else {
+			metrics.add(externalOther, "", *data, forced)
+		}
+		hostMetric := externalHostMetric(key)
+		metrics.add(hostMetric, "", *data, unforced)
+		if "" != key.ExternalCrossProcessID && "" != key.ExternalTransactionName {
+			txnMetric := externalTransactionMetric(key)
+
+			// Unscoped CAT metrics
+			metrics.add(externalAppMetric(key), "", *data, unforced)
+			metrics.add(txnMetric, "", *data, unforced)
+
+			// Scoped External Metric
+			metrics.add(txnMetric, scope, *data, unforced)
+		} else {
+			// Scoped External Metric
+			metrics.add(hostMetric, scope, *data, unforced)
+		}
+	}
+
+	// Datastore Segment Metrics
+	for key, data := range t.datastoreSegments {
+		metrics.add(datastoreAll, "", *data, forced)
+
+		product := datastoreProductMetric(key)
+		metrics.add(product.All, "", *data, forced)
+		if isWeb {
+			metrics.add(datastoreWeb, "", *data, forced)
+			metrics.add(product.Web, "", *data, forced)
+		} else {
+			metrics.add(datastoreOther, "", *data, forced)
+			metrics.add(product.Other, "", *data, forced)
+		}
+
+		if key.Host != "" && key.PortPathOrID != "" {
+			instance := datastoreInstanceMetric(key)
+			metrics.add(instance, "", *data, unforced)
+		}
+
+		operation := datastoreOperationMetric(key)
+		metrics.add(operation, "", *data, unforced)
+
+		if "" != key.Collection {
+			statement := datastoreStatementMetric(key)
+
+			metrics.add(statement, "", *data, unforced)
+			metrics.add(statement, scope, *data, unforced)
+		} else {
+			metrics.add(operation, scope, *data, unforced)
+		}
+	}
+}

vendor/github.com/newrelic/go-agent/internal/txn_events.go

@@ -0,0 +1,97 @@
+package internal
+
+import (
+	"bytes"
+	"math/rand"
+	"time"
+)
+
+// DatastoreExternalTotals contains overview of external and datastore calls
+// made during a transaction.
+type DatastoreExternalTotals struct {
+	externalCallCount  uint64
+	externalDuration   time.Duration
+	datastoreCallCount uint64
+	datastoreDuration  time.Duration
+}
+
+// TxnEvent represents a transaction.
+// https://source.datanerd.us/agents/agent-specs/blob/master/Transaction-Events-PORTED.md
+// https://newrelic.atlassian.net/wiki/display/eng/Agent+Support+for+Synthetics%3A+Forced+Transaction+Traces+and+Analytic+Events
+type TxnEvent struct {
+	Name      string
+	Timestamp time.Time
+	Duration  time.Duration
+	Queuing   time.Duration
+	Zone      ApdexZone
+	Attrs     *Attributes
+	DatastoreExternalTotals
+}
+
+// WriteJSON prepares JSON in the format expected by the collector.
+func (e *TxnEvent) WriteJSON(buf *bytes.Buffer) {
+	w := jsonFieldsWriter{buf: buf}
+	buf.WriteByte('[')
+	buf.WriteByte('{')
+	w.stringField("type", "Transaction")
+	w.stringField("name", e.Name)
+	w.floatField("timestamp", timeToFloatSeconds(e.Timestamp))
+	w.floatField("duration", e.Duration.Seconds())
+	if ApdexNone != e.Zone {
+		w.stringField("nr.apdexPerfZone", e.Zone.label())
+	}
+	if e.Queuing > 0 {
+		w.floatField("queueDuration", e.Queuing.Seconds())
+	}
+	if e.externalCallCount > 0 {
+		w.intField("externalCallCount", int64(e.externalCallCount))
+		w.floatField("externalDuration", e.externalDuration.Seconds())
+	}
+	if e.datastoreCallCount > 0 {
+		// Note that "database" is used for the keys here instead of
+		// "datastore" for historical reasons.
+		w.intField("databaseCallCount", int64(e.datastoreCallCount))
+		w.floatField("databaseDuration", e.datastoreDuration.Seconds())
+	}
+	buf.WriteByte('}')
+	buf.WriteByte(',')
+	userAttributesJSON(e.Attrs, buf, destTxnEvent)
+	buf.WriteByte(',')
+	agentAttributesJSON(e.Attrs, buf, destTxnEvent)
+	buf.WriteByte(']')
+}
+
+// MarshalJSON is used for testing.
+func (e *TxnEvent) MarshalJSON() ([]byte, error) {
+	buf := bytes.NewBuffer(make([]byte, 0, 256))
+
+	e.WriteJSON(buf)
+
+	return buf.Bytes(), nil
+}
+
+type txnEvents struct {
+	events *analyticsEvents
+}
+
+func newTxnEvents(max int) *txnEvents {
+	return &txnEvents{
+		events: newAnalyticsEvents(max),
+	}
+}
+
+func (events *txnEvents) AddTxnEvent(e *TxnEvent) {
+	stamp := eventStamp(rand.Float32())
+	events.events.addEvent(analyticsEvent{stamp, e})
+}
+
+func (events *txnEvents) MergeIntoHarvest(h *Harvest) {
+	h.TxnEvents.events.mergeFailed(events.events)
+}
+
+func (events *txnEvents) Data(agentRunID string, harvestStart time.Time) ([]byte, error) {
+	return events.events.CollectorJSON(agentRunID)
+}
+
+func (events *txnEvents) numSeen() float64  { return events.events.NumSeen() }
+func (events *txnEvents) numSaved() float64 { return events.events.NumSaved() }

vendor/github.com/newrelic/go-agent/internal/txn_trace.go

@@ -0,0 +1,315 @@
+package internal
+
+import (
+	"bytes"
+	"container/heap"
+	"encoding/json"
+	"sort"
+	"time"
+
+	"github.com/newrelic/go-agent/internal/jsonx"
+)
+
+// See https://source.datanerd.us/agents/agent-specs/blob/master/Transaction-Trace-LEGACY.md
+
+type traceNodeHeap []traceNode
+
+// traceNodeParams is used for trace node parameters.  A struct is used in place
+// of a map[string]interface{} to facilitate testing and reduce JSON Marshal
+// overhead.  If too many fields get added here, it probably makes sense to
+// start using a map.  This struct is not embedded into traceNode to minimize
+// the size of traceNode:  Not all nodes will have parameters.
+type traceNodeParams struct {
+	StackTrace      *StackTrace
+	CleanURL        string
+	Database        string
+	Host            string
+	PortPathOrID    string
+	Query           string
+	queryParameters queryParameters
+}
+
+func (p *traceNodeParams) WriteJSON(buf *bytes.Buffer) {
+	w := jsonFieldsWriter{buf: buf}
+	buf.WriteByte('{')
+	if nil != p.StackTrace {
+		w.writerField("backtrace", p.StackTrace)
+	}
+	if "" != p.CleanURL {
+		w.stringField("uri", p.CleanURL)
+	}
+	if "" != p.Database {
+		w.stringField("database_name", p.Database)
+	}
+	if "" != p.Host {
+		w.stringField("host", p.Host)
+	}
+	if "" != p.PortPathOrID {
+		w.stringField("port_path_or_id", p.PortPathOrID)
+	}
+	if "" != p.Query {
+		w.stringField("query", p.Query)
+	}
+	if nil != p.queryParameters {
+		w.writerField("query_parameters", p.queryParameters)
+	}
+	buf.WriteByte('}')
+}
+
+// MarshalJSON is used for testing.
+func (p *traceNodeParams) MarshalJSON() ([]byte, error) {
+	buf := &bytes.Buffer{}
+	p.WriteJSON(buf)
+	return buf.Bytes(), nil
+}
+
+type traceNode struct {
+	start    segmentTime
+	stop     segmentTime
+	duration time.Duration
+	params   *traceNodeParams
+	name     string
+}
+
+func (h traceNodeHeap) Len() int           { return len(h) }
+func (h traceNodeHeap) Less(i, j int) bool { return h[i].duration < h[j].duration }
+func (h traceNodeHeap) Swap(i, j int)      { h[i], h[j] = h[j], h[i] }
+
+// Push and Pop are unused: only heap.Init and heap.Fix are used.
+func (h traceNodeHeap) Push(x interface{}) {}
+func (h traceNodeHeap) Pop() interface{}   { return nil }
+
+// TxnTrace contains the work in progress transaction trace.
+type TxnTrace struct {
+	Enabled             bool
+	SegmentThreshold    time.Duration
+	StackTraceThreshold time.Duration
+	nodes               traceNodeHeap
+	maxNodes            int
+}
+
+// considerNode exists to prevent unnecessary calls to witnessNode: constructing
+// the metric name and params map requires allocations.
+func (trace *TxnTrace) considerNode(end segmentEnd) bool {
+	return trace.Enabled && (end.duration >= trace.SegmentThreshold)
+}
+
+func (trace *TxnTrace) witnessNode(end segmentEnd, name string, params *traceNodeParams) {
+	node := traceNode{
+		start:    end.start,
+		stop:     end.stop,
+		duration: end.duration,
+		name:     name,
+		params:   params,
+	}
+	if !trace.considerNode(end) {
+		return
+	}
+	if trace.nodes == nil {
+		max := trace.maxNodes
+		if 0 == max {
+			max = maxTxnTraceNodes
+		}
+		trace.nodes = make(traceNodeHeap, 0, max)
+	}
+	if end.exclusive >= trace.StackTraceThreshold {
+		if node.params == nil {
+			p := new(traceNodeParams)
+			node.params = p
+		}
+		// skip the following stack frames:
+		//   this method
+		//   function in tracing.go      (EndBasicSegment, EndExternalSegment, EndDatastoreSegment)
+		//   function in internal_txn.go (endSegment, endExternal, endDatastore)
+		//   segment end method
+		skip := 4
+		node.params.StackTrace = GetStackTrace(skip)
+	}
+	if len(trace.nodes) < cap(trace.nodes) {
+		trace.nodes = append(trace.nodes, node)
+		if len(trace.nodes) == cap(trace.nodes) {
+			heap.Init(trace.nodes)
+		}
+		return
+	}
+	if node.duration <= trace.nodes[0].duration {
+		return
+	}
+	trace.nodes[0] = node
+	heap.Fix(trace.nodes, 0)
+}
+
+// HarvestTrace contains a finished transaction trace ready for serialization to
+// the collector.
+type HarvestTrace struct {
+	Start                time.Time
+	Duration             time.Duration
+	MetricName           string
+	CleanURL             string
+	Trace                TxnTrace
+	ForcePersist         bool
+	GUID                 string
+	SyntheticsResourceID string
+	Attrs                *Attributes
+}
+
+type nodeDetails struct {
+	name          string
+	relativeStart time.Duration
+	relativeStop  time.Duration
+	params        *traceNodeParams
+}
+
+func printNodeStart(buf *bytes.Buffer, n nodeDetails) {
+	// time.Seconds() is intentionally not used here.  Millisecond
+	// precision is enough.
+	relativeStartMillis := n.relativeStart.Nanoseconds() / (1000 * 1000)
+	relativeStopMillis := n.relativeStop.Nanoseconds() / (1000 * 1000)
+
+	buf.WriteByte('[')
+	jsonx.AppendInt(buf, relativeStartMillis)
+	buf.WriteByte(',')
+	jsonx.AppendInt(buf, relativeStopMillis)
+	buf.WriteByte(',')
+	jsonx.AppendString(buf, n.name)
+	buf.WriteByte(',')
+	if nil == n.params {
+		buf.WriteString("{}")
+	} else {
+		n.params.WriteJSON(buf)
+	}
+	buf.WriteByte(',')
+	buf.WriteByte('[')
+}
+
+func printChildren(buf *bytes.Buffer, traceStart time.Time, nodes sortedTraceNodes, next int, stop segmentStamp) int {
+	firstChild := true
+	for next < len(nodes) && nodes[next].start.Stamp < stop {
+		if firstChild {
+			firstChild = false
+		} else {
+			buf.WriteByte(',')
+		}
+		printNodeStart(buf, nodeDetails{
+			name:          nodes[next].name,
+			relativeStart: nodes[next].start.Time.Sub(traceStart),
+			relativeStop:  nodes[next].stop.Time.Sub(traceStart),
+			params:        nodes[next].params,
+		})
+		next = printChildren(buf, traceStart, nodes, next+1, nodes[next].stop.Stamp)
+		buf.WriteString("]]")
+
+	}
+	return next
+}
+
+type sortedTraceNodes []*traceNode
+
+func (s sortedTraceNodes) Len() int           { return len(s) }
+func (s sortedTraceNodes) Less(i, j int) bool { return s[i].start.Stamp < s[j].start.Stamp }
+func (s sortedTraceNodes) Swap(i, j int)      { s[i], s[j] = s[j], s[i] }
+
+func traceDataJSON(trace *HarvestTrace) []byte {
+	estimate := 100 * len(trace.Trace.nodes)
+	buf := bytes.NewBuffer(make([]byte, 0, estimate))
+
+	nodes := make(sortedTraceNodes, len(trace.Trace.nodes))
+	for i := 0; i < len(nodes); i++ {
+		nodes[i] = &trace.Trace.nodes[i]
+	}
+	sort.Sort(nodes)
+
+	buf.WriteByte('[') // begin trace data
+
+	// If the trace string pool is used, insert another array here.
+
+	jsonx.AppendFloat(buf, 0.0) // unused timestamp
+	buf.WriteByte(',')          //
+	buf.WriteString("{}")       // unused: formerly request parameters
+	buf.WriteByte(',')          //
+	buf.WriteString("{}")       // unused: formerly custom parameters
+	buf.WriteByte(',')          //
+
+	printNodeStart(buf, nodeDetails{ // begin outer root
+		name:          "ROOT",
+		relativeStart: 0,
+		relativeStop:  trace.Duration,
+	})
+
+	printNodeStart(buf, nodeDetails{ // begin inner root
+		name:          trace.MetricName,
+		relativeStart: 0,
+		relativeStop:  trace.Duration,
+	})
+
+	if len(nodes) > 0 {
+		lastStopStamp := nodes[len(nodes)-1].stop.Stamp + 1
+		printChildren(buf, trace.Start, nodes, 0, lastStopStamp)
+	}
+
+	buf.WriteString("]]") // end outer root
+	buf.WriteString("]]") // end inner root
+
+	buf.WriteByte(',')
+	buf.WriteByte('{')
+	buf.WriteString(`"agentAttributes":`)
+	agentAttributesJSON(trace.Attrs, buf, destTxnTrace)
+	buf.WriteByte(',')
+	buf.WriteString(`"userAttributes":`)
+	userAttributesJSON(trace.Attrs, buf, destTxnTrace)
+	buf.WriteByte(',')
+	buf.WriteString(`"intrinsics":{}`) // TODO intrinsics
+	buf.WriteByte('}')
+
+	// If the trace string pool is used, end another array here.
+
+	buf.WriteByte(']') // end trace data
+
+	return buf.Bytes()
+}
+
+// MarshalJSON prepares the trace in the JSON expected by the collector.
+func (trace *HarvestTrace) MarshalJSON() ([]byte, error) {
+	return json.Marshal([]interface{}{
+		trace.Start.UnixNano() / 1000,
+		trace.Duration.Seconds() * 1000.0,
+		trace.MetricName,
+		trace.CleanURL,
+		JSONString(traceDataJSON(trace)),
+		trace.GUID,
+		nil, // reserved for future use
+		trace.ForcePersist,
+		nil, // X-Ray sessions not supported
+		trace.SyntheticsResourceID,
+	})
+}
+
+type harvestTraces struct {
+	trace *HarvestTrace
+}
+
+func newHarvestTraces() *harvestTraces {
+	return &harvestTraces{}
+}
+
+func (traces *harvestTraces) Witness(trace HarvestTrace) {
+	if nil == traces.trace || traces.trace.Duration < trace.Duration {
+		cpy := new(HarvestTrace)
+		*cpy = trace
+		traces.trace = cpy
+	}
+}
+
+func (traces *harvestTraces) Data(agentRunID string, harvestStart time.Time) ([]byte, error) {
+	if nil == traces.trace {
+		return nil, nil
+	}
+	return json.Marshal([]interface{}{
+		agentRunID,
+		[]interface{}{
+			traces.trace,
+		},
+	})
+}
+
+func (traces *harvestTraces) MergeIntoHarvest(h *Harvest) {}

vendor/github.com/newrelic/go-agent/internal/url.go

@@ -0,0 +1,43 @@
+package internal
+
+import "net/url"
+
+// SafeURL removes sensitive information from a URL.
+func SafeURL(u *url.URL) string {
+	if nil == u {
+		return ""
+	}
+	if "" != u.Opaque {
+		// If the URL is opaque, we cannot be sure if it contains
+		// sensitive information.
+		return ""
+	}
+
+	// Omit user, query, and fragment information for security.
+	ur := url.URL{
+		Scheme: u.Scheme,
+		Host:   u.Host,
+		Path:   u.Path,
+	}
+	return ur.String()
+}
+
+// SafeURLFromString removes sensitive information from a URL.
+func SafeURLFromString(rawurl string) string {
+	u, err := url.Parse(rawurl)
+	if nil != err {
+		return ""
+	}
+	return SafeURL(u)
+}
+
+// HostFromURL returns the URL's host.
+func HostFromURL(u *url.URL) string {
+	if nil == u {
+		return ""
+	}
+	if "" != u.Opaque {
+		return "opaque"
+	}
+	return u.Host
+}

vendor/github.com/newrelic/go-agent/internal/utilities.go

@@ -0,0 +1,80 @@
+package internal
+
+import (
+	"bytes"
+	"encoding/json"
+	"strings"
+	"time"
+)
+
+// JSONString assists in logging JSON:  Based on the formatter used to log
+// Context contents, the contents could be marshalled as JSON or just printed
+// directly.
+type JSONString string
+
+// MarshalJSON returns the JSONString unmodified without any escaping.
+func (js JSONString) MarshalJSON() ([]byte, error) {
+	if "" == js {
+		return []byte("null"), nil
+	}
+	return []byte(js), nil
+}
+
+func removeFirstSegment(name string) string {
+	idx := strings.Index(name, "/")
+	if -1 == idx {
+		return name
+	}
+	return name[idx+1:]
+}
+
+func timeToFloatSeconds(t time.Time) float64 {
+	return float64(t.UnixNano()) / float64(1000*1000*1000)
+}
+
+func timeToFloatMilliseconds(t time.Time) float64 {
+	return float64(t.UnixNano()) / float64(1000*1000)
+}
+
+func floatSecondsToDuration(seconds float64) time.Duration {
+	nanos := seconds * 1000 * 1000 * 1000
+	return time.Duration(nanos) * time.Nanosecond
+}
+
+func absTimeDiff(t1, t2 time.Time) time.Duration {
+	if t1.After(t2) {
+		return t1.Sub(t2)
+	}
+	return t2.Sub(t1)
+}
+
+func compactJSON(js []byte) []byte {
+	buf := new(bytes.Buffer)
+	if err := json.Compact(buf, js); err != nil {
+		return nil
+	}
+	return buf.Bytes()
+}
+
+// CompactJSONString removes the whitespace from a JSON string.
+func CompactJSONString(js string) string {
+	out := compactJSON([]byte(js))
+	return string(out)
+}
+
+// StringLengthByteLimit truncates strings using a byte-limit boundary and
+// avoids terminating in the middle of a multibyte character.
+func StringLengthByteLimit(str string, byteLimit int) string {
+	if len(str) <= byteLimit {
+		return str
+	}
+
+	limitIndex := 0
+	for pos := range str {
+		if pos > byteLimit {
+			break
+		}
+		limitIndex = pos
+	}
+	return str[0:limitIndex]
+}

vendor/github.com/newrelic/go-agent/internal/utilization/aws.go

@@ -0,0 +1,121 @@
+package utilization
+
+import (
+	"fmt"
+	"io"
+	"net/http"
+	"time"
+)
+
+const (
+	maxResponseLengthBytes = 255
+
+	// AWS data gathering requires making three web requests, therefore this
+	// timeout is in keeping with the spec's total timeout of 1 second.
+	individualConnectionTimeout = 300 * time.Millisecond
+)
+
+const (
+	awsHost = "169.254.169.254"
+
+	typeEndpointPath = "/2008-02-01/meta-data/instance-type"
+	idEndpointPath   = "/2008-02-01/meta-data/instance-id"
+	zoneEndpointPath = "/2008-02-01/meta-data/placement/availability-zone"
+
+	typeEndpoint = "http://" + awsHost + typeEndpointPath
+	idEndpoint   = "http://" + awsHost + idEndpointPath
+	zoneEndpoint = "http://" + awsHost + zoneEndpointPath
+)
+
+// awsValidationError represents a response from an AWS endpoint that doesn't
+// match the format expectations.
+type awsValidationError struct {
+	e error
+}
+
+func (a awsValidationError) Error() string {
+	return a.e.Error()
+}
+
+func isAWSValidationError(e error) bool {
+	_, is := e.(awsValidationError)
+	return is
+}
+
+func getAWS() (*vendor, error) {
+	return getEndpoints(&http.Client{
+		Timeout: individualConnectionTimeout,
+	})
+}
+
+func getEndpoints(client *http.Client) (*vendor, error) {
+	v := &vendor{}
+	var err error
+
+	v.ID, err = getAndValidate(client, idEndpoint)
+	if err != nil {
+		return nil, err
+	}
+	v.Type, err = getAndValidate(client, typeEndpoint)
+	if err != nil {
+		return nil, err
+	}
+	v.Zone, err = getAndValidate(client, zoneEndpoint)
+	if err != nil {
+		return nil, err
+	}
+
+	return v, nil
+}
+
+func getAndValidate(client *http.Client, endpoint string) (string, error) {
+	response, err := client.Get(endpoint)
+	if err != nil {
+		return "", err
+	}
+	defer response.Body.Close()
+
+	if response.StatusCode != 200 {
+		return "", fmt.Errorf("unexpected response code %d", response.StatusCode)
+	}
+
+	b := make([]byte, maxResponseLengthBytes+1)
+	num, err := response.Body.Read(b)
+	if err != nil && err != io.EOF {
+		return "", err
+	}
+
+	if num > maxResponseLengthBytes {
+		return "", awsValidationError{
+			fmt.Errorf("maximum length %d exceeded", maxResponseLengthBytes),
+		}
+	}
+
+	responseText := string(b[:num])
+
+	for _, r := range responseText {
+		if !isAcceptableRune(r) {
+			return "", awsValidationError{
+				fmt.Errorf("invalid character %x", r),
+			}
+		}
+	}
+
+	return responseText, nil
+}
+
+// See:
+// https://source.datanerd.us/agents/agent-specs/blob/master/Utilization.md#normalizing-aws-data
+func isAcceptableRune(r rune) bool {
+	switch r {
+	case 0xFFFD:
+		return false
+	case '_', ' ', '/', '.', '-':
+		return true
+	default:
+		return r > 0x7f ||
+			('0' <= r && r <= '9') ||
+			('a' <= r && r <= 'z') ||
+			('A' <= r && r <= 'Z')
+	}
+}

vendor/github.com/newrelic/go-agent/internal/utilization/utilization.go

@@ -0,0 +1,140 @@
+// Package utilization implements the Utilization spec, available at
+// https://source.datanerd.us/agents/agent-specs/blob/master/Utilization.md
+package utilization
+
+import (
+	"runtime"
+
+	"github.com/newrelic/go-agent/internal/logger"
+	"github.com/newrelic/go-agent/internal/sysinfo"
+)
+
+const metadataVersion = 2
+
+// Config controls the behavior of utilization information capture.
+type Config struct {
+	DetectAWS         bool
+	DetectDocker      bool
+	LogicalProcessors int
+	TotalRAMMIB       int
+	BillingHostname   string
+}
+
+type override struct {
+	LogicalProcessors *int   `json:"logical_processors,omitempty"`
+	TotalRAMMIB       *int   `json:"total_ram_mib,omitempty"`
+	BillingHostname   string `json:"hostname,omitempty"`
+}
+
+// Data contains utilization system information.
+type Data struct {
+	MetadataVersion   int       `json:"metadata_version"`
+	LogicalProcessors int       `json:"logical_processors"`
+	RAMMib            *uint64   `json:"total_ram_mib"`
+	Hostname          string    `json:"hostname"`
+	Vendors           *vendors  `json:"vendors,omitempty"`
+	Config            *override `json:"config,omitempty"`
+}
+
+var (
+	sampleRAMMib = uint64(1024)
+	// SampleData contains sample utilization data useful for testing.
+	SampleData = Data{
+		MetadataVersion:   metadataVersion,
+		LogicalProcessors: 16,
+		RAMMib:            &sampleRAMMib,
+		Hostname:          "my-hostname",
+	}
+)
+
+type vendor struct {
+	ID   string `json:"id,omitempty"`
+	Type string `json:"type,omitempty"`
+	Zone string `json:"zone,omitempty"`
+}
+
+type vendors struct {
+	AWS    *vendor `json:"aws,omitempty"`
+	Docker *vendor `json:"docker,omitempty"`
+}
+
+func overrideFromConfig(config Config) *override {
+	ov := &override{}
+
+	if 0 != config.LogicalProcessors {
+		x := config.LogicalProcessors
+		ov.LogicalProcessors = &x
+	}
+	if 0 != config.TotalRAMMIB {
+		x := config.TotalRAMMIB
+		ov.TotalRAMMIB = &x
+	}
+	ov.BillingHostname = config.BillingHostname
+
+	if "" == ov.BillingHostname &&
+		nil == ov.LogicalProcessors &&
+		nil == ov.TotalRAMMIB {
+		ov = nil
+	}
+	return ov
+}
+
+// Gather gathers system utilization data.
+func Gather(config Config, lg logger.Logger) *Data {
+	uDat := Data{
+		MetadataVersion:   metadataVersion,
+		Vendors:           &vendors{},
+		LogicalProcessors: runtime.NumCPU(),
+	}
+
+	if config.DetectDocker {
+		id, err := sysinfo.DockerID()
+		if err != nil &&
+			err != sysinfo.ErrDockerUnsupported &&
+			err != sysinfo.ErrDockerNotFound {
+			lg.Warn("error gathering Docker information", map[string]interface{}{
+				"error": err.Error(),
+			})
+		} else if id != "" {
+			uDat.Vendors.Docker = &vendor{ID: id}
+		}
+	}
+
+	if config.DetectAWS {
+		aws, err := getAWS()
+		if nil == err {
+			uDat.Vendors.AWS = aws
+		} else if isAWSValidationError(err) {
+			lg.Warn("AWS validation error", map[string]interface{}{
+				"error": err.Error(),
+			})
+		}
+	}
+
+	if uDat.Vendors.AWS == nil && uDat.Vendors.Docker == nil {
+		uDat.Vendors = nil
+	}
+
+	host, err := sysinfo.Hostname()
+	if nil == err {
+		uDat.Hostname = host
+	} else {
+		lg.Warn("error getting hostname", map[string]interface{}{
+			"error": err.Error(),
+		})
+	}
+
+	bts, err := sysinfo.PhysicalMemoryBytes()
+	if nil == err {
+		mib := sysinfo.BytesToMebibytes(bts)
+		uDat.RAMMib = &mib
+	} else {
+		lg.Warn("error getting memory", map[string]interface{}{
+			"error": err.Error(),
+		})
+	}
+
+	uDat.Config = overrideFromConfig(config)
+
+	return &uDat
+}

vendor/github.com/newrelic/go-agent/internal_app.go

@@ -0,0 +1,566 @@
+package newrelic
+
+import (
+	"errors"
+	"fmt"
+	"net/http"
+	"os"
+	"strings"
+	"sync"
+	"time"
+
+	"github.com/newrelic/go-agent/internal"
+	"github.com/newrelic/go-agent/internal/logger"
+)
+
+var (
+	debugLogging = os.Getenv("NEW_RELIC_DEBUG_LOGGING")
+	redirectHost = func() string {
+		if s := os.Getenv("NEW_RELIC_HOST"); "" != s {
+			return s
+		}
+		return "collector.newrelic.com"
+	}()
+)
+
+type dataConsumer interface {
+	Consume(internal.AgentRunID, internal.Harvestable)
+}
+
+type appData struct {
+	id   internal.AgentRunID
+	data internal.Harvestable
+}
+
+type app struct {
+	config      Config
+	attrConfig  *internal.AttributeConfig
+	rpmControls internal.RpmControls
+	testHarvest *internal.Harvest
+
+	// initiateShutdown is used to tell the processor to shutdown.
+	initiateShutdown chan struct{}
+
+	// shutdownStarted and shutdownComplete are closed by the processor
+	// goroutine to indicate the shutdown status.  Two channels are used so
+	// that the call of app.Shutdown() can block until shutdown has
+	// completed but other goroutines can exit when shutdown has started.
+	// This is not just an optimization:  This prevents a deadlock if
+	// harvesting data during the shutdown fails and an attempt is made to
+	// merge the data into the next harvest.
+	shutdownStarted  chan struct{}
+	shutdownComplete chan struct{}
+
+	// Sends to these channels should not occur without a <-shutdownStarted
+	// select option to prevent deadlock.
+	dataChan           chan appData
+	collectorErrorChan chan error
+	connectChan        chan *internal.AppRun
+
+	harvestTicker *time.Ticker
+
+	// This mutex protects both `run` and `err`, both of which should only
+	// be accessed using getState and setState.
+	sync.RWMutex
+	// run is non-nil when the app is successfully connected.  It is
+	// immutable.
+	run *internal.AppRun
+	// err is non-nil if the application will never be connected again
+	// (disconnect, license exception, shutdown).
+	err error
+}
+
+var (
+	placeholderRun = &internal.AppRun{
+		ConnectReply: internal.ConnectReplyDefaults(),
+	}
+)
+
+func isFatalHarvestError(e error) bool {
+	return internal.IsDisconnect(e) ||
+		internal.IsLicenseException(e) ||
+		internal.IsRestartException(e)
+}
+
+func shouldSaveFailedHarvest(e error) bool {
+	if e == internal.ErrPayloadTooLarge || e == internal.ErrUnsupportedMedia {
+		return false
+	}
+	return true
+}
+
+func (app *app) doHarvest(h *internal.Harvest, harvestStart time.Time, run *internal.AppRun) {
+	h.CreateFinalMetrics()
+	h.Metrics = h.Metrics.ApplyRules(run.MetricRules)
+
+	payloads := h.Payloads()
+	for cmd, p := range payloads {
+
+		data, err := p.Data(run.RunID.String(), harvestStart)
+
+		if nil == data && nil == err {
+			continue
+		}
+
+		if nil == err {
+			call := internal.RpmCmd{
+				Collector: run.Collector,
+				RunID:     run.RunID.String(),
+				Name:      cmd,
+				Data:      data,
+			}
+
+			// The reply from harvest calls is always unused.
+			_, err = internal.CollectorRequest(call, app.rpmControls)
+		}
+
+		if nil == err {
+			continue
+		}
+
+		if isFatalHarvestError(err) {
+			select {
+			case app.collectorErrorChan <- err:
+			case <-app.shutdownStarted:
+			}
+			return
+		}
+
+		app.config.Logger.Warn("harvest failure", map[string]interface{}{
+			"cmd":   cmd,
+			"error": err.Error(),
+		})
+
+		if shouldSaveFailedHarvest(err) {
+			app.Consume(run.RunID, p)
+		}
+	}
+}
+
+func connectAttempt(app *app) (*internal.AppRun, error) {
+	js, e := configConnectJSON(app.config)
+	if nil != e {
+		return nil, e
+	}
+	return internal.ConnectAttempt(js, redirectHost, app.rpmControls)
+}
+
+func (app *app) connectRoutine() {
+	for {
+		run, err := connectAttempt(app)
+		if nil == err {
+			select {
+			case app.connectChan <- run:
+			case <-app.shutdownStarted:
+			}
+			return
+		}
+
+		if internal.IsDisconnect(err) || internal.IsLicenseException(err) {
+			select {
+			case app.collectorErrorChan <- err:
+			case <-app.shutdownStarted:
+			}
+			return
+		}
+
+		app.config.Logger.Warn("application connect failure", map[string]interface{}{
+			"error": err.Error(),
+		})
+
+		time.Sleep(internal.ConnectBackoff)
+	}
+}
+
+func debug(data internal.Harvestable, lg Logger) {
+	now := time.Now()
+	h := internal.NewHarvest(now)
+	data.MergeIntoHarvest(h)
+	ps := h.Payloads()
+	for cmd, p := range ps {
+		d, err := p.Data("agent run id", now)
+		if nil == d && nil == err {
+			continue
+		}
+		if nil != err {
+			lg.Debug("integration", map[string]interface{}{
+				"cmd":   cmd,
+				"error": err.Error(),
+			})
+			continue
+		}
+		lg.Debug("integration", map[string]interface{}{
+			"cmd":  cmd,
+			"data": internal.JSONString(d),
+		})
+	}
+}
+
+func processConnectMessages(run *internal.AppRun, lg Logger) {
+	for _, msg := range run.Messages {
+		event := "collector message"
+		cn := map[string]interface{}{"msg": msg.Message}
+
+		switch strings.ToLower(msg.Level) {
+		case "error":
+			lg.Error(event, cn)
+		case "warn":
+			lg.Warn(event, cn)
+		case "info":
+			lg.Info(event, cn)
+		case "debug", "verbose":
+			lg.Debug(event, cn)
+		}
+	}
+}
+
+func (app *app) process() {
+	// Both the harvest and the run are non-nil when the app is connected,
+	// and nil otherwise.
+	var h *internal.Harvest
+	var run *internal.AppRun
+
+	for {
+		select {
+		case <-app.harvestTicker.C:
+			if nil != run {
+				now := time.Now()
+				go app.doHarvest(h, now, run)
+				h = internal.NewHarvest(now)
+			}
+		case d := <-app.dataChan:
+			if nil != run && run.RunID == d.id {
+				d.data.MergeIntoHarvest(h)
+			}
+		case <-app.initiateShutdown:
+			close(app.shutdownStarted)
+
+			// Remove the run before merging any final data to
+			// ensure a bounded number of receives from dataChan.
+			app.setState(nil, errors.New("application shut down"))
+			app.harvestTicker.Stop()
+
+			if nil != run {
+				for done := false; !done; {
+					select {
+					case d := <-app.dataChan:
+						if run.RunID == d.id {
+							d.data.MergeIntoHarvest(h)
+						}
+					default:
+						done = true
+					}
+				}
+				app.doHarvest(h, time.Now(), run)
+			}
+
+			close(app.shutdownComplete)
+			return
+		case err := <-app.collectorErrorChan:
+			run = nil
+			h = nil
+			app.setState(nil, nil)
+
+			switch {
+			case internal.IsDisconnect(err):
+				app.setState(nil, err)
+				app.config.Logger.Error("application disconnected by New Relic", map[string]interface{}{
+					"app": app.config.AppName,
+				})
+			case internal.IsLicenseException(err):
+				app.setState(nil, err)
+				app.config.Logger.Error("invalid license", map[string]interface{}{
+					"app":     app.config.AppName,
+					"license": app.config.License,
+				})
+			case internal.IsRestartException(err):
+				app.config.Logger.Info("application restarted", map[string]interface{}{
+					"app": app.config.AppName,
+				})
+				go app.connectRoutine()
+			}
+		case run = <-app.connectChan:
+			h = internal.NewHarvest(time.Now())
+			app.setState(run, nil)
+
+			app.config.Logger.Info("application connected", map[string]interface{}{
+				"app": app.config.AppName,
+				"run": run.RunID.String(),
+			})
+			processConnectMessages(run, app.config.Logger)
+		}
+	}
+}
+
+func (app *app) Shutdown(timeout time.Duration) {
+	if !app.config.Enabled {
+		return
+	}
+
+	select {
+	case app.initiateShutdown <- struct{}{}:
+	default:
+	}
+
+	// Block until shutdown is done or timeout occurs.
+	t := time.NewTimer(timeout)
+	select {
+	case <-app.shutdownComplete:
+	case <-t.C:
+	}
+	t.Stop()
+
+	app.config.Logger.Info("application shutdown", map[string]interface{}{
+		"app": app.config.AppName,
+	})
+}
+
+func convertAttributeDestinationConfig(c AttributeDestinationConfig) internal.AttributeDestinationConfig {
+	return internal.AttributeDestinationConfig{
+		Enabled: c.Enabled,
+		Include: c.Include,
+		Exclude: c.Exclude,
+	}
+}
+
+func runSampler(app *app, period time.Duration) {
+	previous := internal.GetSample(time.Now(), app.config.Logger)
+	t := time.NewTicker(period)
+	for {
+		select {
+		case now := <-t.C:
+			current := internal.GetSample(now, app.config.Logger)
+			run, _ := app.getState()
+			app.Consume(run.RunID, internal.GetStats(internal.Samples{
+				Previous: previous,
+				Current:  current,
+			}))
+			previous = current
+		case <-app.shutdownStarted:
+			t.Stop()
+			return
+		}
+	}
+}
+
+func (app *app) WaitForConnection(timeout time.Duration) error {
+	if !app.config.Enabled {
+		return nil
+	}
+	deadline := time.Now().Add(timeout)
+	pollPeriod := 50 * time.Millisecond
+
+	for {
+		run, err := app.getState()
+		if nil != err {
+			return err
+		}
+		if run.RunID != "" {
+			return nil
+		}
+		if time.Now().After(deadline) {
+			return fmt.Errorf("timeout out after %s", timeout.String())
+		}
+		time.Sleep(pollPeriod)
+	}
+}
+
+func newApp(c Config) (Application, error) {
+	c = copyConfigReferenceFields(c)
+	if err := c.Validate(); nil != err {
+		return nil, err
+	}
+	if nil == c.Logger {
+		c.Logger = logger.ShimLogger{}
+	}
+	app := &app{
+		config: c,
+		attrConfig: internal.CreateAttributeConfig(internal.AttributeConfigInput{
+			Attributes:        convertAttributeDestinationConfig(c.Attributes),
+			ErrorCollector:    convertAttributeDestinationConfig(c.ErrorCollector.Attributes),
+			TransactionEvents: convertAttributeDestinationConfig(c.TransactionEvents.Attributes),
+			TransactionTracer: convertAttributeDestinationConfig(c.TransactionTracer.Attributes),
+		}),
+
+		// This channel must be buffered since Shutdown makes a
+		// non-blocking send attempt.
+		initiateShutdown: make(chan struct{}, 1),
+
+		shutdownStarted:    make(chan struct{}),
+		shutdownComplete:   make(chan struct{}),
+		connectChan:        make(chan *internal.AppRun, 1),
+		collectorErrorChan: make(chan error, 1),
+		dataChan:           make(chan appData, internal.AppDataChanSize),
+		rpmControls: internal.RpmControls{
+			UseTLS:  c.UseTLS,
+			License: c.License,
+			Client: &http.Client{
+				Transport: c.Transport,
+				Timeout:   internal.CollectorTimeout,
+			},
+			Logger:       c.Logger,
+			AgentVersion: Version,
+		},
+	}
+
+	app.config.Logger.Info("application created", map[string]interface{}{
+		"app":     app.config.AppName,
+		"version": Version,
+		"enabled": app.config.Enabled,
+	})
+
+	if !app.config.Enabled {
+		return app, nil
+	}
+
+	app.harvestTicker = time.NewTicker(internal.HarvestPeriod)
+
+	go app.process()
+	go app.connectRoutine()
+
+	if app.config.RuntimeSampler.Enabled {
+		go runSampler(app, internal.RuntimeSamplerPeriod)
+	}
+
+	return app, nil
+}
+
+type expectApp interface {
+	internal.Expect
+	Application
+}
+
+func newTestApp(replyfn func(*internal.ConnectReply), cfg Config) (expectApp, error) {
+	cfg.Enabled = false
+	application, err := newApp(cfg)
+	if nil != err {
+		return nil, err
+	}
+	app := application.(*app)
+	if nil != replyfn {
+		reply := internal.ConnectReplyDefaults()
+		replyfn(reply)
+		app.setState(&internal.AppRun{ConnectReply: reply}, nil)
+	}
+
+	app.testHarvest = internal.NewHarvest(time.Now())
+
+	return app, nil
+}
+
+func (app *app) getState() (*internal.AppRun, error) {
+	app.RLock()
+	defer app.RUnlock()
+
+	run := app.run
+	if nil == run {
+		run = placeholderRun
+	}
+	return run, app.err
+}
+
+func (app *app) setState(run *internal.AppRun, err error) {
+	app.Lock()
+	defer app.Unlock()
+
+	app.run = run
+	app.err = err
+}
+
+// StartTransaction implements newrelic.Application's StartTransaction.
+func (app *app) StartTransaction(name string, w http.ResponseWriter, r *http.Request) Transaction {
+	run, _ := app.getState()
+	return upgradeTxn(newTxn(txnInput{
+		Config:     app.config,
+		Reply:      run.ConnectReply,
+		Request:    r,
+		W:          w,
+		Consumer:   app,
+		attrConfig: app.attrConfig,
+	}, name))
+}
+
+var (
+	errHighSecurityEnabled        = errors.New("high security enabled")
+	errCustomEventsDisabled       = errors.New("custom events disabled")
+	errCustomEventsRemoteDisabled = errors.New("custom events disabled by server")
+)
+
+// RecordCustomEvent implements newrelic.Application's RecordCustomEvent.
+func (app *app) RecordCustomEvent(eventType string, params map[string]interface{}) error {
+	if app.config.HighSecurity {
+		return errHighSecurityEnabled
+	}
+
+	if !app.config.CustomInsightsEvents.Enabled {
+		return errCustomEventsDisabled
+	}
+
+	event, e := internal.CreateCustomEvent(eventType, params, time.Now())
+	if nil != e {
+		return e
+	}
+
+	run, _ := app.getState()
+	if !run.CollectCustomEvents {
+		return errCustomEventsRemoteDisabled
+	}
+
+	app.Consume(run.RunID, event)
+
+	return nil
+}
+
+func (app *app) Consume(id internal.AgentRunID, data internal.Harvestable) {
+	if "" != debugLogging {
+		debug(data, app.config.Logger)
+	}
+
+	if nil != app.testHarvest {
+		data.MergeIntoHarvest(app.testHarvest)
+		return
+	}
+
+	if "" == id {
+		return
+	}
+
+	select {
+	case app.dataChan <- appData{id, data}:
+	case <-app.shutdownStarted:
+	}
+}
+
+func (app *app) ExpectCustomEvents(t internal.Validator, want []internal.WantCustomEvent) {
+	internal.ExpectCustomEvents(internal.ExtendValidator(t, "custom events"), app.testHarvest.CustomEvents, want)
+}
+
+func (app *app) ExpectErrors(t internal.Validator, want []internal.WantError) {
+	t = internal.ExtendValidator(t, "traced errors")
+	internal.ExpectErrors(t, app.testHarvest.ErrorTraces, want)
+}
+
+func (app *app) ExpectErrorEvents(t internal.Validator, want []internal.WantErrorEvent) {
+	t = internal.ExtendValidator(t, "error events")
+	internal.ExpectErrorEvents(t, app.testHarvest.ErrorEvents, want)
+}
+
+func (app *app) ExpectTxnEvents(t internal.Validator, want []internal.WantTxnEvent) {
+	t = internal.ExtendValidator(t, "txn events")
+	internal.ExpectTxnEvents(t, app.testHarvest.TxnEvents, want)
+}
+
+func (app *app) ExpectMetrics(t internal.Validator, want []internal.WantMetric) {
+	t = internal.ExtendValidator(t, "metrics")
+	internal.ExpectMetrics(t, app.testHarvest.Metrics, want)
+}
+
+func (app *app) ExpectTxnTraces(t internal.Validator, want []internal.WantTxnTrace) {
+	t = internal.ExtendValidator(t, "txn traces")
+	internal.ExpectTxnTraces(t, app.testHarvest.TxnTraces, want)
+}
+
+func (app *app) ExpectSlowQueries(t internal.Validator, want []internal.WantSlowQuery) {
+	t = internal.ExtendValidator(t, "slow queries")
+	internal.ExpectSlowQueries(t, app.testHarvest.SlowSQLs, want)
+}

vendor/github.com/newrelic/go-agent/internal_config.go

@@ -0,0 +1,153 @@
+package newrelic
+
+import (
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"os"
+	"strings"
+
+	"github.com/newrelic/go-agent/internal"
+	"github.com/newrelic/go-agent/internal/logger"
+	"github.com/newrelic/go-agent/internal/utilization"
+)
+
+func copyDestConfig(c AttributeDestinationConfig) AttributeDestinationConfig {
+	cp := c
+	if nil != c.Include {
+		cp.Include = make([]string, len(c.Include))
+		copy(cp.Include, c.Include)
+	}
+	if nil != c.Exclude {
+		cp.Exclude = make([]string, len(c.Exclude))
+		copy(cp.Exclude, c.Exclude)
+	}
+	return cp
+}
+
+func copyConfigReferenceFields(cfg Config) Config {
+	cp := cfg
+	if nil != cfg.Labels {
+		cp.Labels = make(map[string]string, len(cfg.Labels))
+		for key, val := range cfg.Labels {
+			cp.Labels[key] = val
+		}
+	}
+	if nil != cfg.ErrorCollector.IgnoreStatusCodes {
+		ignored := make([]int, len(cfg.ErrorCollector.IgnoreStatusCodes))
+		copy(ignored, cfg.ErrorCollector.IgnoreStatusCodes)
+		cp.ErrorCollector.IgnoreStatusCodes = ignored
+	}
+
+	cp.Attributes = copyDestConfig(cfg.Attributes)
+	cp.ErrorCollector.Attributes = copyDestConfig(cfg.ErrorCollector.Attributes)
+	cp.TransactionEvents.Attributes = copyDestConfig(cfg.TransactionEvents.Attributes)
+	cp.TransactionTracer.Attributes = copyDestConfig(cfg.TransactionTracer.Attributes)
+
+	return cp
+}
+
+const (
+	agentLanguage = "go"
+)
+
+func transportSetting(t http.RoundTripper) interface{} {
+	if nil == t {
+		return nil
+	}
+	return fmt.Sprintf("%T", t)
+}
+
+func loggerSetting(lg Logger) interface{} {
+	if nil == lg {
+		return nil
+	}
+	if _, ok := lg.(logger.ShimLogger); ok {
+		return nil
+	}
+	return fmt.Sprintf("%T", lg)
+}
+
+const (
+	// https://source.datanerd.us/agents/agent-specs/blob/master/Custom-Host-Names.md
+	hostByteLimit = 255
+)
+
+type settings Config
+
+func (s settings) MarshalJSON() ([]byte, error) {
+	c := Config(s)
+	transport := c.Transport
+	c.Transport = nil
+	logger := c.Logger
+	c.Logger = nil
+
+	js, err := json.Marshal(c)
+	if nil != err {
+		return nil, err
+	}
+	fields := make(map[string]interface{})
+	err = json.Unmarshal(js, &fields)
+	if nil != err {
+		return nil, err
+	}
+	// The License field is not simply ignored by adding the `json:"-"` tag
+	// to it since we want to allow consumers to populate Config from JSON.
+	delete(fields, `License`)
+	fields[`Transport`] = transportSetting(transport)
+	fields[`Logger`] = loggerSetting(logger)
+	return json.Marshal(fields)
+}
+
+func configConnectJSONInternal(c Config, pid int, util *utilization.Data, e internal.Environment, version string) ([]byte, error) {
+	return json.Marshal([]interface{}{struct {
+		Pid             int                  `json:"pid"`
+		Language        string               `json:"language"`
+		Version         string               `json:"agent_version"`
+		Host            string               `json:"host"`
+		HostDisplayName string               `json:"display_host,omitempty"`
+		Settings        interface{}          `json:"settings"`
+		AppName         []string             `json:"app_name"`
+		HighSecurity    bool                 `json:"high_security"`
+		Labels          internal.Labels      `json:"labels,omitempty"`
+		Environment     internal.Environment `json:"environment"`
+		Identifier      string               `json:"identifier"`
+		Util            *utilization.Data    `json:"utilization"`
+	}{
+		Pid:             pid,
+		Language:        agentLanguage,
+		Version:         version,
+		Host:            internal.StringLengthByteLimit(util.Hostname, hostByteLimit),
+		HostDisplayName: internal.StringLengthByteLimit(c.HostDisplayName, hostByteLimit),
+		Settings:        (settings)(c),
+		AppName:         strings.Split(c.AppName, ";"),
+		HighSecurity:    c.HighSecurity,
+		Labels:          internal.Labels(c.Labels),
+		Environment:     e,
+		// This identifier field is provided to avoid:
+		// https://newrelic.atlassian.net/browse/DSCORE-778
+		//
+		// This identifier is used by the collector to look up the real
+		// agent. If an identifier isn't provided, the collector will
+		// create its own based on the first appname, which prevents a
+		// single daemon from connecting "a;b" and "a;c" at the same
+		// time.
+		//
+		// Providing the identifier below works around this issue and
+		// allows users more flexibility in using application rollups.
+		Identifier: c.AppName,
+		Util:       util,
+	}})
+}
+
+func configConnectJSON(c Config) ([]byte, error) {
+	env := internal.NewEnvironment()
+	util := utilization.Gather(utilization.Config{
+		DetectAWS:         c.Utilization.DetectAWS,
+		DetectDocker:      c.Utilization.DetectDocker,
+		LogicalProcessors: c.Utilization.LogicalProcessors,
+		TotalRAMMIB:       c.Utilization.TotalRAMMIB,
+		BillingHostname:   c.Utilization.BillingHostname,
+	}, c.Logger)
+	return configConnectJSONInternal(c, os.Getpid(), util, env, Version)
+}

vendor/github.com/newrelic/go-agent/internal_response_writer.go

@@ -0,0 +1,121 @@
+package newrelic
+
+import (
+	"bufio"
+	"io"
+	"net"
+	"net/http"
+)
+
+const (
+	hasC = 1 << iota // CloseNotifier
+	hasF             // Flusher
+	hasH             // Hijacker
+	hasR             // ReaderFrom
+)
+
+type wrap struct{ *txn }
+type wrapR struct{ *txn }
+type wrapH struct{ *txn }
+type wrapHR struct{ *txn }
+type wrapF struct{ *txn }
+type wrapFR struct{ *txn }
+type wrapFH struct{ *txn }
+type wrapFHR struct{ *txn }
+type wrapC struct{ *txn }
+type wrapCR struct{ *txn }
+type wrapCH struct{ *txn }
+type wrapCHR struct{ *txn }
+type wrapCF struct{ *txn }
+type wrapCFR struct{ *txn }
+type wrapCFH struct{ *txn }
+type wrapCFHR struct{ *txn }
+
+func (x wrapC) CloseNotify() <-chan bool    { return x.W.(http.CloseNotifier).CloseNotify() }
+func (x wrapCR) CloseNotify() <-chan bool   { return x.W.(http.CloseNotifier).CloseNotify() }
+func (x wrapCH) CloseNotify() <-chan bool   { return x.W.(http.CloseNotifier).CloseNotify() }
+func (x wrapCHR) CloseNotify() <-chan bool  { return x.W.(http.CloseNotifier).CloseNotify() }
+func (x wrapCF) CloseNotify() <-chan bool   { return x.W.(http.CloseNotifier).CloseNotify() }
+func (x wrapCFR) CloseNotify() <-chan bool  { return x.W.(http.CloseNotifier).CloseNotify() }
+func (x wrapCFH) CloseNotify() <-chan bool  { return x.W.(http.CloseNotifier).CloseNotify() }
+func (x wrapCFHR) CloseNotify() <-chan bool { return x.W.(http.CloseNotifier).CloseNotify() }
+
+func (x wrapF) Flush()    { x.W.(http.Flusher).Flush() }
+func (x wrapFR) Flush()   { x.W.(http.Flusher).Flush() }
+func (x wrapFH) Flush()   { x.W.(http.Flusher).Flush() }
+func (x wrapFHR) Flush()  { x.W.(http.Flusher).Flush() }
+func (x wrapCF) Flush()   { x.W.(http.Flusher).Flush() }
+func (x wrapCFR) Flush()  { x.W.(http.Flusher).Flush() }
+func (x wrapCFH) Flush()  { x.W.(http.Flusher).Flush() }
+func (x wrapCFHR) Flush() { x.W.(http.Flusher).Flush() }
+
+func (x wrapH) Hijack() (net.Conn, *bufio.ReadWriter, error)    { return x.W.(http.Hijacker).Hijack() }
+func (x wrapHR) Hijack() (net.Conn, *bufio.ReadWriter, error)   { return x.W.(http.Hijacker).Hijack() }
+func (x wrapFH) Hijack() (net.Conn, *bufio.ReadWriter, error)   { return x.W.(http.Hijacker).Hijack() }
+func (x wrapFHR) Hijack() (net.Conn, *bufio.ReadWriter, error)  { return x.W.(http.Hijacker).Hijack() }
+func (x wrapCH) Hijack() (net.Conn, *bufio.ReadWriter, error)   { return x.W.(http.Hijacker).Hijack() }
+func (x wrapCHR) Hijack() (net.Conn, *bufio.ReadWriter, error)  { return x.W.(http.Hijacker).Hijack() }
+func (x wrapCFH) Hijack() (net.Conn, *bufio.ReadWriter, error)  { return x.W.(http.Hijacker).Hijack() }
+func (x wrapCFHR) Hijack() (net.Conn, *bufio.ReadWriter, error) { return x.W.(http.Hijacker).Hijack() }
+
+func (x wrapR) ReadFrom(r io.Reader) (int64, error)    { return x.W.(io.ReaderFrom).ReadFrom(r) }
+func (x wrapHR) ReadFrom(r io.Reader) (int64, error)   { return x.W.(io.ReaderFrom).ReadFrom(r) }
+func (x wrapFR) ReadFrom(r io.Reader) (int64, error)   { return x.W.(io.ReaderFrom).ReadFrom(r) }
+func (x wrapFHR) ReadFrom(r io.Reader) (int64, error)  { return x.W.(io.ReaderFrom).ReadFrom(r) }
+func (x wrapCR) ReadFrom(r io.Reader) (int64, error)   { return x.W.(io.ReaderFrom).ReadFrom(r) }
+func (x wrapCHR) ReadFrom(r io.Reader) (int64, error)  { return x.W.(io.ReaderFrom).ReadFrom(r) }
+func (x wrapCFR) ReadFrom(r io.Reader) (int64, error)  { return x.W.(io.ReaderFrom).ReadFrom(r) }
+func (x wrapCFHR) ReadFrom(r io.Reader) (int64, error) { return x.W.(io.ReaderFrom).ReadFrom(r) }
+
+func upgradeTxn(txn *txn) Transaction {
+	x := 0
+	if _, ok := txn.W.(http.CloseNotifier); ok {
+		x |= hasC
+	}
+	if _, ok := txn.W.(http.Flusher); ok {
+		x |= hasF
+	}
+	if _, ok := txn.W.(http.Hijacker); ok {
+		x |= hasH
+	}
+	if _, ok := txn.W.(io.ReaderFrom); ok {
+		x |= hasR
+	}
+
+	switch x {
+	default:
+		// Wrap the transaction even when there are no methods needed to
+		// ensure consistent error stack trace depth.
+		return wrap{txn}
+	case hasR:
+		return wrapR{txn}
+	case hasH:
+		return wrapH{txn}
+	case hasH | hasR:
+		return wrapHR{txn}
+	case hasF:
+		return wrapF{txn}
+	case hasF | hasR:
+		return wrapFR{txn}
+	case hasF | hasH:
+		return wrapFH{txn}
+	case hasF | hasH | hasR:
+		return wrapFHR{txn}
+	case hasC:
+		return wrapC{txn}
+	case hasC | hasR:
+		return wrapCR{txn}
+	case hasC | hasH:
+		return wrapCH{txn}
+	case hasC | hasH | hasR:
+		return wrapCHR{txn}
+	case hasC | hasF:
+		return wrapCF{txn}
+	case hasC | hasF | hasR:
+		return wrapCFR{txn}
+	case hasC | hasF | hasH:
+		return wrapCFH{txn}
+	case hasC | hasF | hasH | hasR:
+		return wrapCFHR{txn}
+	}
+}

vendor/github.com/newrelic/go-agent/internal_txn.go

@@ -0,0 +1,492 @@
+package newrelic
+
+import (
+	"errors"
+	"net/http"
+	"net/url"
+	"sync"
+	"time"
+
+	"github.com/newrelic/go-agent/internal"
+)
+
+type txnInput struct {
+	W          http.ResponseWriter
+	Request    *http.Request
+	Config     Config
+	Reply      *internal.ConnectReply
+	Consumer   dataConsumer
+	attrConfig *internal.AttributeConfig
+}
+
+type txn struct {
+	txnInput
+	// This mutex is required since the consumer may call the public API
+	// interface functions from different routines.
+	sync.Mutex
+	// finished indicates whether or not End() has been called.  After
+	// finished has been set to true, no recording should occur.
+	finished bool
+	queuing  time.Duration
+	start    time.Time
+	name     string // Work in progress name
+	isWeb    bool
+	ignore   bool
+	errors   internal.TxnErrors // Lazily initialized.
+	attrs    *internal.Attributes
+
+	// Fields relating to tracing and breakdown metrics/segments.
+	tracer internal.Tracer
+
+	// wroteHeader prevents capturing multiple response code errors if the
+	// user erroneously calls WriteHeader multiple times.
+	wroteHeader bool
+
+	// Fields assigned at completion
+	stop           time.Time
+	duration       time.Duration
+	finalName      string // Full finalized metric name
+	zone           internal.ApdexZone
+	apdexThreshold time.Duration
+}
+
+func newTxn(input txnInput, name string) *txn {
+	txn := &txn{
+		txnInput: input,
+		start:    time.Now(),
+		name:     name,
+		isWeb:    nil != input.Request,
+		attrs:    internal.NewAttributes(input.attrConfig),
+	}
+	if nil != txn.Request {
+		txn.queuing = internal.QueueDuration(input.Request.Header, txn.start)
+		internal.RequestAgentAttributes(txn.attrs, input.Request)
+	}
+	txn.attrs.Agent.HostDisplayName = txn.Config.HostDisplayName
+	txn.tracer.Enabled = txn.txnTracesEnabled()
+	txn.tracer.SegmentThreshold = txn.Config.TransactionTracer.SegmentThreshold
+	txn.tracer.StackTraceThreshold = txn.Config.TransactionTracer.StackTraceThreshold
+	txn.tracer.SlowQueriesEnabled = txn.slowQueriesEnabled()
+	txn.tracer.SlowQueryThreshold = txn.Config.DatastoreTracer.SlowQuery.Threshold
+
+	return txn
+}
+
+func (txn *txn) slowQueriesEnabled() bool {
+	return txn.Config.DatastoreTracer.SlowQuery.Enabled &&
+		txn.Reply.CollectTraces
+}
+
+func (txn *txn) txnTracesEnabled() bool {
+	return txn.Config.TransactionTracer.Enabled &&
+		txn.Reply.CollectTraces
+}
+
+func (txn *txn) txnEventsEnabled() bool {
+	return txn.Config.TransactionEvents.Enabled &&
+		txn.Reply.CollectAnalyticsEvents
+}
+
+func (txn *txn) errorEventsEnabled() bool {
+	return txn.Config.ErrorCollector.CaptureEvents &&
+		txn.Reply.CollectErrorEvents
+}
+
+func (txn *txn) freezeName() {
+	if txn.ignore || ("" != txn.finalName) {
+		return
+	}
+
+	txn.finalName = internal.CreateFullTxnName(txn.name, txn.Reply, txn.isWeb)
+	if "" == txn.finalName {
+		txn.ignore = true
+	}
+}
+
+func (txn *txn) getsApdex() bool {
+	return txn.isWeb
+}
+
+func (txn *txn) txnTraceThreshold() time.Duration {
+	if txn.Config.TransactionTracer.Threshold.IsApdexFailing {
+		return internal.ApdexFailingThreshold(txn.apdexThreshold)
+	}
+	return txn.Config.TransactionTracer.Threshold.Duration
+}
+
+func (txn *txn) shouldSaveTrace() bool {
+	return txn.txnTracesEnabled() &&
+		(txn.duration >= txn.txnTraceThreshold())
+}
+
+func (txn *txn) hasErrors() bool {
+	return len(txn.errors) > 0
+}
+
+func (txn *txn) MergeIntoHarvest(h *internal.Harvest) {
+	exclusive := time.Duration(0)
+	children := internal.TracerRootChildren(&txn.tracer)
+	if txn.duration > children {
+		exclusive = txn.duration - children
+	}
+
+	internal.CreateTxnMetrics(internal.CreateTxnMetricsArgs{
+		IsWeb:          txn.isWeb,
+		Duration:       txn.duration,
+		Exclusive:      exclusive,
+		Name:           txn.finalName,
+		Zone:           txn.zone,
+		ApdexThreshold: txn.apdexThreshold,
+		HasErrors:      txn.hasErrors(),
+		Queueing:       txn.queuing,
+	}, h.Metrics)
+
+	internal.MergeBreakdownMetrics(&txn.tracer, h.Metrics, txn.finalName, txn.isWeb)
+
+	if txn.txnEventsEnabled() {
+		h.TxnEvents.AddTxnEvent(&internal.TxnEvent{
+			Name:      txn.finalName,
+			Timestamp: txn.start,
+			Duration:  txn.duration,
+			Queuing:   txn.queuing,
+			Zone:      txn.zone,
+			Attrs:     txn.attrs,
+			DatastoreExternalTotals: txn.tracer.DatastoreExternalTotals,
+		})
+	}
+
+	requestURI := ""
+	if nil != txn.Request && nil != txn.Request.URL {
+		requestURI = internal.SafeURL(txn.Request.URL)
+	}
+
+	internal.MergeTxnErrors(h.ErrorTraces, txn.errors, txn.finalName, requestURI, txn.attrs)
+
+	if txn.errorEventsEnabled() {
+		for _, e := range txn.errors {
+			h.ErrorEvents.Add(&internal.ErrorEvent{
+				Klass:    e.Klass,
+				Msg:      e.Msg,
+				When:     e.When,
+				TxnName:  txn.finalName,
+				Duration: txn.duration,
+				Queuing:  txn.queuing,
+				Attrs:    txn.attrs,
+				DatastoreExternalTotals: txn.tracer.DatastoreExternalTotals,
+			})
+		}
+	}
+
+	if txn.shouldSaveTrace() {
+		h.TxnTraces.Witness(internal.HarvestTrace{
+			Start:                txn.start,
+			Duration:             txn.duration,
+			MetricName:           txn.finalName,
+			CleanURL:             requestURI,
+			Trace:                txn.tracer.TxnTrace,
+			ForcePersist:         false,
+			GUID:                 "",
+			SyntheticsResourceID: "",
+			Attrs:                txn.attrs,
+		})
+	}
+
+	if nil != txn.tracer.SlowQueries {
+		h.SlowSQLs.Merge(txn.tracer.SlowQueries, txn.finalName, requestURI)
+	}
+}
+
+func responseCodeIsError(cfg *Config, code int) bool {
+	if code < http.StatusBadRequest { // 400
+		return false
+	}
+	for _, ignoreCode := range cfg.ErrorCollector.IgnoreStatusCodes {
+		if code == ignoreCode {
+			return false
+		}
+	}
+	return true
+}
+
+func headersJustWritten(txn *txn, code int) {
+	if txn.finished {
+		return
+	}
+	if txn.wroteHeader {
+		return
+	}
+	txn.wroteHeader = true
+
+	internal.ResponseHeaderAttributes(txn.attrs, txn.W.Header())
+	internal.ResponseCodeAttribute(txn.attrs, code)
+
+	if responseCodeIsError(&txn.Config, code) {
+		e := internal.TxnErrorFromResponseCode(time.Now(), code)
+		e.Stack = internal.GetStackTrace(1)
+		txn.noticeErrorInternal(e)
+	}
+}
+
+func (txn *txn) Header() http.Header { return txn.W.Header() }
+
+func (txn *txn) Write(b []byte) (int, error) {
+	n, err := txn.W.Write(b)
+
+	txn.Lock()
+	defer txn.Unlock()
+
+	headersJustWritten(txn, http.StatusOK)
+
+	return n, err
+}
+
+func (txn *txn) WriteHeader(code int) {
+	txn.W.WriteHeader(code)
+
+	txn.Lock()
+	defer txn.Unlock()
+
+	headersJustWritten(txn, code)
+}
+
+func (txn *txn) End() error {
+	txn.Lock()
+	defer txn.Unlock()
+
+	if txn.finished {
+		return errAlreadyEnded
+	}
+
+	txn.finished = true
+
+	r := recover()
+	if nil != r {
+		e := internal.TxnErrorFromPanic(time.Now(), r)
+		e.Stack = internal.GetStackTrace(0)
+		txn.noticeErrorInternal(e)
+	}
+
+	txn.stop = time.Now()
+	txn.duration = txn.stop.Sub(txn.start)
+
+	txn.freezeName()
+
+	// Assign apdexThreshold regardless of whether or not the transaction
+	// gets apdex since it may be used to calculate the trace threshold.
+	txn.apdexThreshold = internal.CalculateApdexThreshold(txn.Reply, txn.finalName)
+
+	if txn.getsApdex() {
+		if txn.hasErrors() {
+			txn.zone = internal.ApdexFailing
+		} else {
+			txn.zone = internal.CalculateApdexZone(txn.apdexThreshold, txn.duration)
+		}
+	} else {
+		txn.zone = internal.ApdexNone
+	}
+
+	if txn.Config.Logger.DebugEnabled() {
+		txn.Config.Logger.Debug("transaction ended", map[string]interface{}{
+			"name":        txn.finalName,
+			"duration_ms": txn.duration.Seconds() * 1000.0,
+			"ignored":     txn.ignore,
+			"run":         txn.Reply.RunID,
+		})
+	}
+
+	if !txn.ignore {
+		txn.Consumer.Consume(txn.Reply.RunID, txn)
+	}
+
+	// Note that if a consumer uses `panic(nil)`, the panic will not
+	// propagate.
+	if nil != r {
+		panic(r)
+	}
+
+	return nil
+}
+
+func (txn *txn) AddAttribute(name string, value interface{}) error {
+	txn.Lock()
+	defer txn.Unlock()
+
+	if txn.finished {
+		return errAlreadyEnded
+	}
+
+	return internal.AddUserAttribute(txn.attrs, name, value, internal.DestAll)
+}
+
+var (
+	errorsLocallyDisabled  = errors.New("errors locally disabled")
+	errorsRemotelyDisabled = errors.New("errors remotely disabled")
+	errNilError            = errors.New("nil error")
+	errAlreadyEnded        = errors.New("transaction has already ended")
+)
+
+const (
+	highSecurityErrorMsg = "message removed by high security setting"
+)
+
+func (txn *txn) noticeErrorInternal(err internal.TxnError) error {
+	if !txn.Config.ErrorCollector.Enabled {
+		return errorsLocallyDisabled
+	}
+
+	if !txn.Reply.CollectErrors {
+		return errorsRemotelyDisabled
+	}
+
+	if nil == txn.errors {
+		txn.errors = internal.NewTxnErrors(internal.MaxTxnErrors)
+	}
+
+	if txn.Config.HighSecurity {
+		err.Msg = highSecurityErrorMsg
+	}
+
+	txn.errors.Add(err)
+
+	return nil
+}
+
+func (txn *txn) NoticeError(err error) error {
+	txn.Lock()
+	defer txn.Unlock()
+
+	if txn.finished {
+		return errAlreadyEnded
+	}
+
+	if nil == err {
+		return errNilError
+	}
+
+	e := internal.TxnErrorFromError(time.Now(), err)
+	e.Stack = internal.GetStackTrace(2)
+	return txn.noticeErrorInternal(e)
+}
+
+func (txn *txn) SetName(name string) error {
+	txn.Lock()
+	defer txn.Unlock()
+
+	if txn.finished {
+		return errAlreadyEnded
+	}
+
+	txn.name = name
+	return nil
+}
+
+func (txn *txn) Ignore() error {
+	txn.Lock()
+	defer txn.Unlock()
+
+	if txn.finished {
+		return errAlreadyEnded
+	}
+	txn.ignore = true
+	return nil
+}
+
+func (txn *txn) StartSegmentNow() SegmentStartTime {
+	var s internal.SegmentStartTime
+	txn.Lock()
+	if !txn.finished {
+		s = internal.StartSegment(&txn.tracer, time.Now())
+	}
+	txn.Unlock()
+	return SegmentStartTime{
+		segment: segment{
+			start: s,
+			txn:   txn,
+		},
+	}
+}
+
+type segment struct {
+	start internal.SegmentStartTime
+	txn   *txn
+}
+
+func endSegment(s Segment) {
+	txn := s.StartTime.txn
+	if nil == txn {
+		return
+	}
+	txn.Lock()
+	if !txn.finished {
+		internal.EndBasicSegment(&txn.tracer, s.StartTime.start, time.Now(), s.Name)
+	}
+	txn.Unlock()
+}
+
+func endDatastore(s DatastoreSegment) {
+	txn := s.StartTime.txn
+	if nil == txn {
+		return
+	}
+	txn.Lock()
+	defer txn.Unlock()
+
+	if txn.finished {
+		return
+	}
+	if txn.Config.HighSecurity {
+		s.QueryParameters = nil
+	}
+	if !txn.Config.DatastoreTracer.QueryParameters.Enabled {
+		s.QueryParameters = nil
+	}
+	if !txn.Config.DatastoreTracer.DatabaseNameReporting.Enabled {
+		s.DatabaseName = ""
+	}
+	if !txn.Config.DatastoreTracer.InstanceReporting.Enabled {
+		s.Host = ""
+		s.PortPathOrID = ""
+	}
+	internal.EndDatastoreSegment(internal.EndDatastoreParams{
+		Tracer:             &txn.tracer,
+		Start:              s.StartTime.start,
+		Now:                time.Now(),
+		Product:            string(s.Product),
+		Collection:         s.Collection,
+		Operation:          s.Operation,
+		ParameterizedQuery: s.ParameterizedQuery,
+		QueryParameters:    s.QueryParameters,
+		Host:               s.Host,
+		PortPathOrID:       s.PortPathOrID,
+		Database:           s.DatabaseName,
+	})
+}
+
+func externalSegmentURL(s ExternalSegment) *url.URL {
+	if "" != s.URL {
+		u, _ := url.Parse(s.URL)
+		return u
+	}
+	r := s.Request
+	if nil != s.Response && nil != s.Response.Request {
+		r = s.Response.Request
+	}
+	if r != nil {
+		return r.URL
+	}
+	return nil
+}
+
+func endExternal(s ExternalSegment) {
+	txn := s.StartTime.txn
+	if nil == txn {
+		return
+	}
+	txn.Lock()
+	defer txn.Unlock()
+
+	if txn.finished {
+		return
+	}
+	internal.EndExternalSegment(&txn.tracer, s.StartTime.start, time.Now(), externalSegmentURL(s))
+}

vendor/github.com/newrelic/go-agent/log.go

@@ -0,0 +1,30 @@
+package newrelic
+
+import (
+	"io"
+
+	"github.com/newrelic/go-agent/internal/logger"
+)
+
+// Logger is the interface that is used for logging in the go-agent.  Assign the
+// Config.Logger field to the Logger you wish to use.  Loggers must be safe for
+// use in multiple goroutines.
+//
+// For an example implementation, see: _integrations/nrlogrus/nrlogrus.go
+type Logger interface {
+	Error(msg string, context map[string]interface{})
+	Warn(msg string, context map[string]interface{})
+	Info(msg string, context map[string]interface{})
+	Debug(msg string, context map[string]interface{})
+	DebugEnabled() bool
+}
+
+// NewLogger creates a basic Logger at info level.
+func NewLogger(w io.Writer) Logger {
+	return logger.New(w, false)
+}
+
+// NewDebugLogger creates a basic Logger at debug level.
+func NewDebugLogger(w io.Writer) Logger {
+	return logger.New(w, true)
+}

vendor/github.com/newrelic/go-agent/segments.go

@@ -0,0 +1,113 @@
+package newrelic
+
+import "net/http"
+
+// SegmentStartTime is created by Transaction.StartSegmentNow and marks the
+// beginning of a segment.  A segment with a zero-valued SegmentStartTime may
+// safely be ended.
+type SegmentStartTime struct{ segment }
+
+// Segment is used to instrument functions, methods, and blocks of code.  The
+// easiest way use Segment is the StartSegment function.
+type Segment struct {
+	StartTime SegmentStartTime
+	Name      string
+}
+
+// DatastoreSegment is used to instrument calls to databases and object stores.
+// Here is an example:
+//
+// 	defer newrelic.DatastoreSegment{
+// 		StartTime:  newrelic.StartSegmentNow(txn),
+// 		Product:    newrelic.DatastoreMySQL,
+// 		Collection: "my_table",
+// 		Operation:  "SELECT",
+// 	}.End()
+//
+type DatastoreSegment struct {
+	StartTime SegmentStartTime
+	// Product is the datastore type.  See the constants in datastore.go.
+	Product DatastoreProduct
+	// Collection is the table or group.
+	Collection string
+	// Operation is the relevant action, e.g. "SELECT" or "GET".
+	Operation string
+	// ParameterizedQuery may be set to the query being performed.  It must
+	// not contain any raw parameters, only placeholders.
+	ParameterizedQuery string
+	// QueryParameters may be used to provide query parameters.  Care should
+	// be taken to only provide parameters which are not sensitive.
+	// QueryParameters are ignored in high security mode.
+	QueryParameters map[string]interface{}
+	// Host is the name of the server hosting the datastore.
+	Host string
+	// PortPathOrID can represent either the port, path, or id of the
+	// datastore being connected to.
+	PortPathOrID string
+	// DatabaseName is name of database where the current query is being
+	// executed.
+	DatabaseName string
+}
+
+// ExternalSegment is used to instrument external calls.  StartExternalSegment
+// is recommended when you have access to an http.Request.
+type ExternalSegment struct {
+	StartTime SegmentStartTime
+	Request   *http.Request
+	Response  *http.Response
+	// If you do not have access to the request, this URL field should be
+	// used to indicate the endpoint.
+	URL string
+}
+
+// End finishes the segment.
+func (s Segment) End() { endSegment(s) }
+
+// End finishes the datastore segment.
+func (s DatastoreSegment) End() { endDatastore(s) }
+
+// End finishes the external segment.
+func (s ExternalSegment) End() { endExternal(s) }
+
+// StartSegmentNow helps avoid Transaction nil checks.
+func StartSegmentNow(txn Transaction) SegmentStartTime {
+	if nil != txn {
+		return txn.StartSegmentNow()
+	}
+	return SegmentStartTime{}
+}
+
+// StartSegment makes it easy to instrument segments.  To time a function, do
+// the following:
+//
+//	func timeMe(txn newrelic.Transaction) {
+//		defer newrelic.StartSegment(txn, "timeMe").End()
+//		// ... function code here ...
+//	}
+//
+// To time a block of code, do the following:
+//
+//	segment := StartSegment(txn, "myBlock")
+//	// ... code you want to time here ...
+//	segment.End()
+//
+func StartSegment(txn Transaction, name string) Segment {
+	return Segment{
+		StartTime: StartSegmentNow(txn),
+		Name:      name,
+	}
+}
+
+// StartExternalSegment makes it easier to instrument external calls.
+//
+//    segment := newrelic.StartExternalSegment(txn, request)
+//    resp, err := client.Do(request)
+//    segment.Response = resp
+//    segment.End()
+//
+func StartExternalSegment(txn Transaction, request *http.Request) ExternalSegment {
+	return ExternalSegment{
+		StartTime: StartSegmentNow(txn),
+		Request:   request,
+	}
+}

vendor/github.com/newrelic/go-agent/transaction.go

@@ -0,0 +1,45 @@
+package newrelic
+
+import "net/http"
+
+// Transaction represents a request or a background task.
+// Each Transaction should only be used in a single goroutine.
+type Transaction interface {
+	// If StartTransaction is called with a non-nil http.ResponseWriter then
+	// the Transaction may be used in its place.  This allows
+	// instrumentation of the response code and response headers.
+	http.ResponseWriter
+
+	// End finishes the current transaction, stopping all further
+	// instrumentation.  Subsequent calls to End will have no effect.
+	End() error
+
+	// Ignore ensures that this transaction's data will not be recorded.
+	Ignore() error
+
+	// SetName names the transaction.  Transactions will not be grouped
+	// usefully if too many unique names are used.
+	SetName(name string) error
+
+	// NoticeError records an error.  The first five errors per transaction
+	// are recorded (this behavior is subject to potential change in the
+	// future).
+	NoticeError(err error) error
+
+	// AddAttribute adds a key value pair to the current transaction.  This
+	// information is attached to errors, transaction events, and error
+	// events.  The key must contain fewer than than 255 bytes.  The value
+	// must be a number, string, or boolean.  Attribute configuration is
+	// applied (see config.go).
+	//
+	// For more information, see:
+	// https://docs.newrelic.com/docs/agents/manage-apm-agents/agent-metrics/collect-custom-attributes
+	AddAttribute(key string, value interface{}) error
+
+	// StartSegmentNow allows the timing of functions, external calls, and
+	// datastore calls.  The segments of each transaction MUST be used in a
+	// single goroutine.  Consumers are encouraged to use the
+	// `StartSegmentNow` functions which checks if the Transaction is nil.
+	// See segments.go
+	StartSegmentNow() SegmentStartTime
+}

vendor/github.com/newrelic/go-agent/version.go

@@ -0,0 +1,10 @@
+package newrelic
+
+const (
+	major = "1"
+	minor = "5"
+	patch = "0"
+
+	// Version is the full string version of this Go Agent.
+	Version = major + "." + minor + "." + patch
+)

vendor/github.com/paultyng/go-newrelic/LICENSE

@@ -0,0 +1,201 @@
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
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+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
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+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
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+
+   4. Redistribution. You may reproduce and distribute copies of the
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+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
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+          that You distribute, all copyright, patent, trademark, and
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+          the Derivative Works; and
+
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+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
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+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
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+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
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+
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+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "{}"
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+
+   Copyright {yyyy} {name of copyright owner}
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.

vendor/github.com/paultyng/go-newrelic/api/alert_channels.go

@@ -0,0 +1,87 @@
+package api
+
+import (
+	"fmt"
+	"net/url"
+)
+
+func (c *Client) queryAlertChannels() ([]AlertChannel, error) {
+	channels := []AlertChannel{}
+
+	reqURL, err := url.Parse("/alerts_channels.json")
+	if err != nil {
+		return nil, err
+	}
+
+	nextPath := reqURL.String()
+
+	for nextPath != "" {
+		resp := struct {
+			Channels []AlertChannel `json:"channels,omitempty"`
+		}{}
+
+		nextPath, err = c.Do("GET", nextPath, nil, &resp)
+		if err != nil {
+			return nil, err
+		}
+
+		channels = append(channels, resp.Channels...)
+	}
+
+	return channels, nil
+}
+
+// GetAlertChannel returns a specific alert channel by ID
+func (c *Client) GetAlertChannel(id int) (*AlertChannel, error) {
+	channels, err := c.queryAlertChannels()
+	if err != nil {
+		return nil, err
+	}
+
+	for _, channel := range channels {
+		if channel.ID == id {
+			return &channel, nil
+		}
+	}
+
+	return nil, ErrNotFound
+}
+
+// ListAlertChannels returns all alert policies for the account.
+func (c *Client) ListAlertChannels() ([]AlertChannel, error) {
+	return c.queryAlertChannels()
+}
+
+func (c *Client) CreateAlertChannel(channel AlertChannel) (*AlertChannel, error) {
+	// TODO: support attaching policy ID's here?
+	// qs := map[string]string{
+	// 	"policy_ids[]": channel.Links.PolicyIDs,
+	// }
+
+	if len(channel.Links.PolicyIDs) > 0 {
+		return nil, fmt.Errorf("You cannot create an alert channel with policy IDs, you must attach polidy IDs after creation.")
+	}
+
+	req := struct {
+		Channel AlertChannel `json:"channel"`
+	}{
+		Channel: channel,
+	}
+
+	resp := struct {
+		Channels []AlertChannel `json:"channels,omitempty"`
+	}{}
+
+	_, err := c.Do("POST", "/alerts_channels.json", req, &resp)
+	if err != nil {
+		return nil, err
+	}
+
+	return &resp.Channels[0], nil
+}
+
+func (c *Client) DeleteAlertChannel(id int) error {
+	u := &url.URL{Path: fmt.Sprintf("/alerts_channels/%v.json", id)}
+	_, err := c.Do("DELETE", u.String(), nil, nil)
+	return err
+}

vendor/github.com/paultyng/go-newrelic/api/alert_conditions.go

@@ -0,0 +1,117 @@
+package api
+
+import (
+	"fmt"
+	"net/url"
+	"strconv"
+)
+
+func (c *Client) queryAlertConditions(policyID int) ([]AlertCondition, error) {
+	conditions := []AlertCondition{}
+
+	reqURL, err := url.Parse("/alerts_conditions.json")
+	if err != nil {
+		return nil, err
+	}
+
+	qs := reqURL.Query()
+	qs.Set("policy_id", strconv.Itoa(policyID))
+
+	reqURL.RawQuery = qs.Encode()
+
+	nextPath := reqURL.String()
+
+	for nextPath != "" {
+		resp := struct {
+			Conditions []AlertCondition `json:"conditions,omitempty"`
+		}{}
+
+		nextPath, err = c.Do("GET", nextPath, nil, &resp)
+		if err != nil {
+			return nil, err
+		}
+
+		for _, c := range resp.Conditions {
+			c.PolicyID = policyID
+		}
+
+		conditions = append(conditions, resp.Conditions...)
+	}
+
+	return conditions, nil
+}
+
+func (c *Client) GetAlertCondition(policyID int, id int) (*AlertCondition, error) {
+	conditions, err := c.queryAlertConditions(policyID)
+	if err != nil {
+		return nil, err
+	}
+
+	for _, condition := range conditions {
+		if condition.ID == id {
+			return &condition, nil
+		}
+	}
+
+	return nil, ErrNotFound
+}
+
+// ListAlertConditions returns alert conditions for the specified policy.
+func (c *Client) ListAlertConditions(policyID int) ([]AlertCondition, error) {
+	return c.queryAlertConditions(policyID)
+}
+
+func (c *Client) CreateAlertCondition(condition AlertCondition) (*AlertCondition, error) {
+	policyID := condition.PolicyID
+
+	req := struct {
+		Condition AlertCondition `json:"condition"`
+	}{
+		Condition: condition,
+	}
+
+	resp := struct {
+		Condition AlertCondition `json:"condition,omitempty"`
+	}{}
+
+	u := &url.URL{Path: fmt.Sprintf("/alerts_conditions/policies/%v.json", policyID)}
+	_, err := c.Do("POST", u.String(), req, &resp)
+	if err != nil {
+		return nil, err
+	}
+
+	resp.Condition.PolicyID = policyID
+
+	return &resp.Condition, nil
+}
+
+func (c *Client) UpdateAlertCondition(condition AlertCondition) (*AlertCondition, error) {
+	policyID := condition.PolicyID
+	id := condition.ID
+
+	req := struct {
+		Condition AlertCondition `json:"condition"`
+	}{
+		Condition: condition,
+	}
+
+	resp := struct {
+		Condition AlertCondition `json:"condition,omitempty"`
+	}{}
+
+	u := &url.URL{Path: fmt.Sprintf("/alerts_conditions/%v.json", id)}
+	_, err := c.Do("PUT", u.String(), req, &resp)
+	if err != nil {
+		return nil, err
+	}
+
+	resp.Condition.PolicyID = policyID
+
+	return &resp.Condition, nil
+}
+
+func (c *Client) DeleteAlertCondition(policyID int, id int) error {
+	u := &url.URL{Path: fmt.Sprintf("/alerts_conditions/%v.json", id)}
+	_, err := c.Do("DELETE", u.String(), nil, nil)
+	return err
+}

vendor/github.com/paultyng/go-newrelic/api/alert_policies.go

@@ -0,0 +1,86 @@
+package api
+
+import (
+	"fmt"
+	"net/url"
+)
+
+func (c *Client) queryAlertPolicies(name *string) ([]AlertPolicy, error) {
+	policies := []AlertPolicy{}
+
+	reqURL, err := url.Parse("/alerts_policies.json")
+	if err != nil {
+		return nil, err
+	}
+
+	qs := reqURL.Query()
+	if name != nil {
+		qs.Set("filter[name]", *name)
+	}
+	reqURL.RawQuery = qs.Encode()
+
+	nextPath := reqURL.String()
+
+	for nextPath != "" {
+		resp := struct {
+			Policies []AlertPolicy `json:"policies,omitempty"`
+		}{}
+
+		nextPath, err = c.Do("GET", nextPath, nil, &resp)
+		if err != nil {
+			return nil, err
+		}
+
+		policies = append(policies, resp.Policies...)
+	}
+
+	return policies, nil
+}
+
+// GetAlertPolicy returns a specific alert policy by ID
+func (c *Client) GetAlertPolicy(id int) (*AlertPolicy, error) {
+	policies, err := c.queryAlertPolicies(nil)
+	if err != nil {
+		return nil, err
+	}
+
+	for _, policy := range policies {
+		if policy.ID == id {
+			return &policy, nil
+		}
+	}
+
+	return nil, ErrNotFound
+}
+
+// ListAlertPolicies returns all alert policies for the account.
+func (c *Client) ListAlertPolicies() ([]AlertPolicy, error) {
+	return c.queryAlertPolicies(nil)
+}
+
+// CreateAlertPolicy creates a new alert policy for the account.
+func (c *Client) CreateAlertPolicy(policy AlertPolicy) (*AlertPolicy, error) {
+	req := struct {
+		Policy AlertPolicy `json:"policy"`
+	}{
+		Policy: policy,
+	}
+
+	resp := struct {
+		Policy AlertPolicy `json:"policy,omitempty"`
+	}{}
+
+	_, err := c.Do("POST", "/alerts_policies.json", req, &resp)
+	if err != nil {
+		return nil, err
+	}
+
+	return &resp.Policy, nil
+}
+
+// DeleteAlertPolicy deletes an existing alert policy from the account.
+func (c *Client) DeleteAlertPolicy(id int) error {
+	u := &url.URL{Path: fmt.Sprintf("/alerts_policies/%v.json", id)}
+	_, err := c.Do("DELETE", u.String(), nil, nil)
+	return err
+}

vendor/github.com/paultyng/go-newrelic/api/alert_policy_channels.go

@@ -0,0 +1,64 @@
+package api
+
+import (
+	"net/url"
+	"regexp"
+	"strconv"
+)
+
+func (c *Client) UpdateAlertPolicyChannels(policyID int, channelIDs []int) error {
+	channelIDStrings := make([]string, len(channelIDs))
+
+	for i, channelID := range channelIDs {
+		channelIDStrings[i] = strconv.Itoa(channelID)
+	}
+
+	reqURL, err := url.Parse("/alerts_policy_channels.json")
+	if err != nil {
+		return err
+	}
+
+	qs := url.Values{
+		"policy_id":   []string{strconv.Itoa(policyID)},
+		"channel_ids": channelIDStrings,
+	}
+	reqURL.RawQuery = qs.Encode()
+
+	nextPath := reqURL.String()
+
+	_, err = c.Do("PUT", nextPath, nil, nil)
+	return err
+}
+
+func (c *Client) DeleteAlertPolicyChannel(policyID int, channelID int) error {
+	reqURL, err := url.Parse("/alerts_policy_channels.json")
+	if err != nil {
+		return err
+	}
+
+	qs := url.Values{
+		"policy_id":  []string{strconv.Itoa(policyID)},
+		"channel_id": []string{strconv.Itoa(channelID)},
+	}
+	reqURL.RawQuery = qs.Encode()
+
+	nextPath := reqURL.String()
+
+	_, err = c.Do("DELETE", nextPath, nil, nil)
+	if err != nil {
+		if apiErr, ok := err.(*ErrorResponse); ok {
+			matched, err := regexp.MatchString("Alerts policy with ID: \\d+ is not valid.", apiErr.Detail.Title)
+			if err != nil {
+				return err
+			}
+
+			if matched {
+				return ErrNotFound
+			}
+		}
+
+		return err
+	}
+
+	return nil
+}

vendor/github.com/paultyng/go-newrelic/api/applications.go

@@ -0,0 +1,58 @@
+package api
+
+import (
+	"net/url"
+	"strconv"
+)
+
+type applicationsFilters struct {
+	Name     *string
+	Host     *string
+	IDs      []int
+	Language *string
+}
+
+func (c *Client) queryApplications(filters applicationsFilters) ([]Application, error) {
+	applications := []Application{}
+
+	reqURL, err := url.Parse("/applications.json")
+	if err != nil {
+		return nil, err
+	}
+
+	qs := reqURL.Query()
+	if filters.Name != nil {
+		qs.Set("filter[name]", *filters.Name)
+	}
+	if filters.Host != nil {
+		qs.Set("filter[host]", *filters.Host)
+	}
+	for _, id := range filters.IDs {
+		qs.Add("filter[ids]", strconv.Itoa(id))
+	}
+	if filters.Language != nil {
+		qs.Set("filter[language]", *filters.Language)
+	}
+	reqURL.RawQuery = qs.Encode()
+
+	nextPath := reqURL.String()
+
+	for nextPath != "" {
+		resp := struct {
+			Applications []Application `json:"applications,omitempty"`
+		}{}
+
+		nextPath, err = c.Do("GET", nextPath, nil, &resp)
+		if err != nil {
+			return nil, err
+		}
+
+		applications = append(applications, resp.Applications...)
+	}
+
+	return applications, nil
+}
+
+func (c *Client) ListApplications() ([]Application, error) {
+	return c.queryApplications(applicationsFilters{})
+}

vendor/github.com/paultyng/go-newrelic/api/client.go

@@ -0,0 +1,108 @@
+package api
+
+import (
+	"fmt"
+
+	"github.com/tomnomnom/linkheader"
+
+	resty "gopkg.in/resty.v0"
+)
+
+// Client represents the client state for the API.
+type Client struct {
+	RestyClient *resty.Client
+}
+
+type ErrorResponse struct {
+	Detail *ErrorDetail `json:"error,omitempty"`
+}
+
+func (e *ErrorResponse) Error() string {
+	if e != nil && e.Detail != nil {
+		return e.Detail.Title
+	}
+	return "Unknown error"
+}
+
+type ErrorDetail struct {
+	Title string `json:"title,omitempty"`
+}
+
+// Config contains all the configuration data for the API Client
+type Config struct {
+	APIKey  string
+	BaseURL string
+	Debug   bool
+}
+
+// New returns a new Client for the specified apiKey.
+func New(config Config) Client {
+	r := resty.New()
+
+	baseURL := config.BaseURL
+	if baseURL == "" {
+		baseURL = "https://api.newrelic.com/v2"
+	}
+
+	r.SetHeader("X-Api-Key", config.APIKey)
+	r.SetHostURL(baseURL)
+
+	if config.Debug {
+		r.SetDebug(true)
+	}
+
+	c := Client{
+		RestyClient: r,
+	}
+
+	return c
+}
+
+// Do exectes an API request with the specified parameters.
+func (c *Client) Do(method string, path string, body interface{}, response interface{}) (string, error) {
+	r := c.RestyClient.R().
+		SetError(&ErrorResponse{})
+
+	if body != nil {
+		r = r.SetBody(body)
+	}
+
+	if response != nil {
+		r = r.SetResult(response)
+	}
+
+	apiResponse, err := r.Execute(method, path)
+
+	if err != nil {
+		return "", err
+	}
+
+	nextPath := ""
+	header := apiResponse.Header().Get("Link")
+	if header != "" {
+		links := linkheader.Parse(header)
+
+		for _, link := range links.FilterByRel("next") {
+			nextPath = link.URL
+			break
+		}
+	}
+
+	statusClass := apiResponse.StatusCode() / 100 % 10
+
+	if statusClass == 2 {
+		return nextPath, nil
+	}
+
+	rawError := apiResponse.Error()
+
+	if rawError != nil {
+		apiError := rawError.(*ErrorResponse)
+
+		if apiError.Detail != nil {
+			return "", apiError
+		}
+	}
+
+	return "", fmt.Errorf("Unexpected status %v returned from API", apiResponse.StatusCode())
+}

vendor/github.com/paultyng/go-newrelic/api/labels.go

@@ -0,0 +1,79 @@
+package api
+
+import (
+	"fmt"
+	"net/url"
+)
+
+func (c *Client) queryLabels() ([]Label, error) {
+	labels := []Label{}
+
+	reqURL, err := url.Parse("/labels.json")
+	if err != nil {
+		return nil, err
+	}
+
+	nextPath := reqURL.String()
+
+	for nextPath != "" {
+		resp := struct {
+			Labels []Label `json:"labels,omitempty"`
+		}{}
+
+		nextPath, err = c.Do("GET", nextPath, nil, &resp)
+		if err != nil {
+			return nil, err
+		}
+
+		labels = append(labels, resp.Labels...)
+	}
+
+	return labels, nil
+}
+
+func (c *Client) GetLabel(key string) (*Label, error) {
+	labels, err := c.queryLabels()
+	if err != nil {
+		return nil, err
+	}
+
+	for _, label := range labels {
+		if label.Key == key {
+			return &label, nil
+		}
+	}
+
+	return nil, ErrNotFound
+}
+
+// ListLabels returns the labels for the account.
+func (c *Client) ListLabels() ([]Label, error) {
+	return c.queryLabels()
+}
+
+// CreateLabel creates a new label for the account.
+func (c *Client) CreateLabel(label Label) error {
+	if label.Links.Applications == nil {
+		label.Links.Applications = make([]int, 0)
+	}
+
+	if label.Links.Servers == nil {
+		label.Links.Servers = make([]int, 0)
+	}
+
+	req := struct {
+		Label Label `json:"label,omitempty"`
+	}{
+		Label: label,
+	}
+
+	_, err := c.Do("PUT", "/labels.json", req, nil)
+	return err
+}
+
+// DeleteLabel deletes a label on the account specified by key.
+func (c *Client) DeleteLabel(key string) error {
+	u := &url.URL{Path: fmt.Sprintf("/labels/%v.json", key)}
+	_, err := c.Do("DELETE", u.String(), nil, nil)
+	return err
+}

vendor/github.com/paultyng/go-newrelic/api/types.go

@@ -0,0 +1,120 @@
+package api
+
+import "errors"
+
+var (
+	ErrNotFound = errors.New("newrelic: Resource not found")
+)
+
+// LabelLinks represents external references on the Label.
+type LabelLinks struct {
+	Applications []int `json:"applications"`
+	Servers      []int `json:"servers"`
+}
+
+// Label represents a New Relic label.
+type Label struct {
+	Key      string     `json:"key,omitempty"`
+	Category string     `json:"category,omitempty"`
+	Name     string     `json:"name,omitempty"`
+	Links    LabelLinks `json:"links,omitempty"`
+}
+
+// AlertPolicy represents a New Relic alert policy.
+type AlertPolicy struct {
+	ID                 int    `json:"id,omitempty"`
+	IncidentPreference string `json:"incident_preference,omitempty"`
+	Name               string `json:"name,omitempty"`
+	CreatedAt          int    `json:"created_at,omitempty"`
+	UpdatedAt          int    `json:"updated_at,omitempty"`
+}
+
+// AlertConditionUserDefined represents user defined metrics for the New Relic alert condition.
+type AlertConditionUserDefined struct {
+	Metric        string `json:"metric,omitempty"`
+	ValueFunction string `json:"value_function,omitempty"`
+}
+
+// AlertConditionTerm represents the terms of a New Relic alert condition.
+type AlertConditionTerm struct {
+	Duration     int     `json:"duration,string,omitempty"`
+	Operator     string  `json:"operator,omitempty"`
+	Priority     string  `json:"priority,omitempty"`
+	Threshold    float64 `json:"threshold,string,omitempty"`
+	TimeFunction string  `json:"time_function,omitempty"`
+}
+
+// AlertCondition represents a New Relic alert condition.
+// TODO: custom unmarshal entities to ints?
+// TODO: handle unmarshaling .75 for float (not just 0.75)
+type AlertCondition struct {
+	PolicyID    int                       `json:"-"`
+	ID          int                       `json:"id,omitempty"`
+	Type        string                    `json:"type,omitempty"`
+	Name        string                    `json:"name,omitempty"`
+	Enabled     bool                      `json:"enabled,omitempty"`
+	Entities    []string                  `json:"entities,omitempty"`
+	Metric      string                    `json:"metric,omitempty"`
+	RunbookURL  string                    `json:"runbook_url,omitempty"`
+	Terms       []AlertConditionTerm      `json:"terms,omitempty"`
+	UserDefined AlertConditionUserDefined `json:"uder_defined,omitempty"`
+}
+
+// AlertChannelLinks represent the links between policies and alert channels
+type AlertChannelLinks struct {
+	PolicyIDs []int `json:"policy_ids,omitempty"`
+}
+
+// AlertChannel represents a New Relic alert notification channel
+type AlertChannel struct {
+	ID            int                    `json:"id,omitempty"`
+	Name          string                 `json:"name,omitempty"`
+	Type          string                 `json:"type,omitempty"`
+	Configuration map[string]interface{} `json:"configuration,omitempty"`
+	Links         AlertChannelLinks      `json:"links,omitempty"`
+}
+
+type ApplicationSummary struct {
+	ResponseTime            float64 `json:"response_time"`
+	Throughput              float64 `json:"throughput"`
+	ErrorRate               float64 `json:"error_rate"`
+	ApdexTarget             float64 `json:"apdex_target"`
+	ApdexScore              float64 `json:"apdex_score"`
+	HostCount               int     `json:"host_count"`
+	InstanceCount           int     `json:"instance_count"`
+	ConcurrentInstanceCount int     `json:"concurrent_instance_count"`
+}
+
+type ApplicationEndUserSummary struct {
+	ResponseTime float64 `json:"response_time"`
+	Throughput   float64 `json:"throughput"`
+	ApdexTarget  float64 `json:"apdex_target"`
+	ApdexScore   float64 `json:"apdex_score"`
+}
+
+type ApplicationSettings struct {
+	AppApdexThreshold        float64 `json:"app_apdex_threshold,omitempty"`
+	EndUserApdexThreshold    float64 `json:"end_user_apdex_threshold,omitempty"`
+	EnableRealUserMonitoring bool    `json:"enable_real_user_monitoring,omitempty"`
+	UseServerSideConfig      bool    `json:"use_server_side_config,omitempty"`
+}
+
+type ApplicationLinks struct {
+	ServerIDs     []int `json:"servers,omitempty"`
+	HostIDs       []int `json:"application_hosts,omitempty"`
+	InstanceIDs   []int `json:"application_instances,omitempty"`
+	AlertPolicyID int   `json:"alert_policy"`
+}
+
+type Application struct {
+	ID             int                       `json:"id,omitempty"`
+	Name           string                    `json:"name,omitempty"`
+	Language       string                    `json:"language,omitempty"`
+	HealthStatus   string                    `json:"health_status,omitempty"`
+	Reporting      bool                      `json:"reporting,omitempty"`
+	LastReportedAt string                    `json:"last_reported_at,omitempty"`
+	Summary        ApplicationSummary        `json:"application_summary,omitempty"`
+	EndUserSummary ApplicationEndUserSummary `json:"end_user_summary,omitempty"`
+	Settings       ApplicationSettings       `json:"settings,omitempty"`
+	Links          ApplicationLinks          `json:"links,omitempty"`
+}

vendor/github.com/tomnomnom/linkheader/CONTRIBUTING.mkd

@@ -0,0 +1,10 @@
+# Contributing
+
+* Raise an issue if appropriate
+* Fork the repo
+* Bootstrap the dev dependencies (run `./script/bootstrap`)
+* Make your changes
+* Use [gofmt](https://golang.org/cmd/gofmt/)
+* Make sure the tests pass (run `./script/test`)
+* Make sure the linters pass (run `./script/lint`)
+* Issue a pull request

vendor/github.com/tomnomnom/linkheader/LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2016 Tom Hudson
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

vendor/github.com/tomnomnom/linkheader/README.mkd

@@ -0,0 +1,35 @@
+# Golang Link Header Parser
+
+Library for parsing HTTP Link headers. Requires Go 1.2 or higher.
+
+Docs can be found on [the GoDoc page](https://godoc.org/github.com/tomnomnom/linkheader).
+
+[![Build Status](https://travis-ci.org/tomnomnom/linkheader.svg)](https://travis-ci.org/tomnomnom/linkheader)
+
+## Basic Example
+
+```go
+package main
+
+import (
+	"fmt"
+
+	"github.com/tomnomnom/linkheader"
+)
+
+func main() {
+	header := "<https://api.github.com/user/58276/repos?page=2>; rel=\"next\"," +
+		"<https://api.github.com/user/58276/repos?page=2>; rel=\"last\""
+	links := linkheader.Parse(header)
+
+	for _, link := range links {
+		fmt.Printf("URL: %s; Rel: %s\n", link.URL, link.Rel)
+	}
+}
+
+// Output:
+// URL: https://api.github.com/user/58276/repos?page=2; Rel: next
+// URL: https://api.github.com/user/58276/repos?page=2; Rel: last
+```
+
+

vendor/github.com/tomnomnom/linkheader/main.go

@@ -0,0 +1,143 @@
+// Package linkheader provides functions for parsing HTTP Link headers
+package linkheader
+
+import (
+	"fmt"
+	"strings"
+)
+
+// A Link is a single URL and related parameters
+type Link struct {
+	URL    string
+	Rel    string
+	Params map[string]string
+}
+
+// HasParam returns if a Link has a particular parameter or not
+func (l Link) HasParam(key string) bool {
+	for p := range l.Params {
+		if p == key {
+			return true
+		}
+	}
+	return false
+}
+
+// Param returns the value of a parameter if it exists
+func (l Link) Param(key string) string {
+	for k, v := range l.Params {
+		if key == k {
+			return v
+		}
+	}
+	return ""
+}
+
+// String returns the string representation of a link
+func (l Link) String() string {
+
+	p := make([]string, 0, len(l.Params))
+	for k, v := range l.Params {
+		p = append(p, fmt.Sprintf("%s=\"%s\"", k, v))
+	}
+	if l.Rel != "" {
+		p = append(p, fmt.Sprintf("%s=\"%s\"", "rel", l.Rel))
+	}
+	return fmt.Sprintf("<%s>; %s", l.URL, strings.Join(p, "; "))
+}
+
+// Links is a slice of Link structs
+type Links []Link
+
+// FilterByRel filters a group of Links by the provided Rel attribute
+func (l Links) FilterByRel(r string) Links {
+	links := make(Links, 0)
+	for _, link := range l {
+		if link.Rel == r {
+			links = append(links, link)
+		}
+	}
+	return links
+}
+
+// String returns the string representation of multiple Links
+// for use in HTTP responses etc
+func (l Links) String() string {
+	var strs []string
+	for _, link := range l {
+		strs = append(strs, link.String())
+	}
+	return strings.Join(strs, ", ")
+}
+
+// Parse parses a raw Link header in the form:
+//   <url>; rel="foo", <url>; rel="bar"; wat="dis"
+// returning a slice of Link structs
+func Parse(raw string) Links {
+	links := make(Links, 0)
+
+	// One chunk: <url>; rel="foo"
+	for _, chunk := range strings.Split(raw, ",") {
+
+		link := Link{URL: "", Rel: "", Params: make(map[string]string)}
+
+		// Figure out what each piece of the chunk is
+		for _, piece := range strings.Split(chunk, ";") {
+
+			piece = strings.Trim(piece, " ")
+			if piece == "" {
+				continue
+			}
+
+			// URL
+			if piece[0] == '<' && piece[len(piece)-1] == '>' {
+				link.URL = strings.Trim(piece, "<>")
+				continue
+			}
+
+			// Params
+			key, val := parseParam(piece)
+			if key == "" {
+				continue
+			}
+
+			// Special case for rel
+			if strings.ToLower(key) == "rel" {
+				link.Rel = val
+			}
+
+			link.Params[key] = val
+
+		}
+
+		links = append(links, link)
+	}
+
+	return links
+}
+
+// ParseMultiple is like Parse, but accepts a slice of headers
+// rather than just one header string
+func ParseMultiple(headers []string) Links {
+	links := make(Links, 0)
+	for _, header := range headers {
+		links = append(links, Parse(header)...)
+	}
+	return links
+}
+
+// parseParam takes a raw param in the form key="val" and
+// returns the key and value as seperate strings
+func parseParam(raw string) (key, val string) {
+
+	parts := strings.SplitN(raw, "=", 2)
+	if len(parts) != 2 {
+		return "", ""
+	}
+
+	key = parts[0]
+	val = strings.Trim(parts[1], "\"")
+
+	return key, val
+
+}

vendor/golang.org/x/net/idna/idna.go

@@ -0,0 +1,68 @@
+// Copyright 2012 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package idna implements IDNA2008 (Internationalized Domain Names for
+// Applications), defined in RFC 5890, RFC 5891, RFC 5892, RFC 5893 and
+// RFC 5894.
+package idna // import "golang.org/x/net/idna"
+
+import (
+	"strings"
+	"unicode/utf8"
+)
+
+// TODO(nigeltao): specify when errors occur. For example, is ToASCII(".") or
+// ToASCII("foo\x00") an error? See also http://www.unicode.org/faq/idn.html#11
+
+// acePrefix is the ASCII Compatible Encoding prefix.
+const acePrefix = "xn--"
+
+// ToASCII converts a domain or domain label to its ASCII form. For example,
+// ToASCII("bücher.example.com") is "xn--bcher-kva.example.com", and
+// ToASCII("golang") is "golang".
+func ToASCII(s string) (string, error) {
+	if ascii(s) {
+		return s, nil
+	}
+	labels := strings.Split(s, ".")
+	for i, label := range labels {
+		if !ascii(label) {
+			a, err := encode(acePrefix, label)
+			if err != nil {
+				return "", err
+			}
+			labels[i] = a
+		}
+	}
+	return strings.Join(labels, "."), nil
+}
+
+// ToUnicode converts a domain or domain label to its Unicode form. For example,
+// ToUnicode("xn--bcher-kva.example.com") is "bücher.example.com", and
+// ToUnicode("golang") is "golang".
+func ToUnicode(s string) (string, error) {
+	if !strings.Contains(s, acePrefix) {
+		return s, nil
+	}
+	labels := strings.Split(s, ".")
+	for i, label := range labels {
+		if strings.HasPrefix(label, acePrefix) {
+			u, err := decode(label[len(acePrefix):])
+			if err != nil {
+				return "", err
+			}
+			labels[i] = u
+		}
+	}
+	return strings.Join(labels, "."), nil
+}
+
+func ascii(s string) bool {
+	for i := 0; i < len(s); i++ {
+		if s[i] >= utf8.RuneSelf {
+			return false
+		}
+	}
+	return true
+}

vendor/golang.org/x/net/idna/punycode.go

@@ -0,0 +1,200 @@
+// Copyright 2012 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package idna
+
+// This file implements the Punycode algorithm from RFC 3492.
+
+import (
+	"fmt"
+	"math"
+	"strings"
+	"unicode/utf8"
+)
+
+// These parameter values are specified in section 5.
+//
+// All computation is done with int32s, so that overflow behavior is identical
+// regardless of whether int is 32-bit or 64-bit.
+const (
+	base        int32 = 36
+	damp        int32 = 700
+	initialBias int32 = 72
+	initialN    int32 = 128
+	skew        int32 = 38
+	tmax        int32 = 26
+	tmin        int32 = 1
+)
+
+// decode decodes a string as specified in section 6.2.
+func decode(encoded string) (string, error) {
+	if encoded == "" {
+		return "", nil
+	}
+	pos := 1 + strings.LastIndex(encoded, "-")
+	if pos == 1 {
+		return "", fmt.Errorf("idna: invalid label %q", encoded)
+	}
+	if pos == len(encoded) {
+		return encoded[:len(encoded)-1], nil
+	}
+	output := make([]rune, 0, len(encoded))
+	if pos != 0 {
+		for _, r := range encoded[:pos-1] {
+			output = append(output, r)
+		}
+	}
+	i, n, bias := int32(0), initialN, initialBias
+	for pos < len(encoded) {
+		oldI, w := i, int32(1)
+		for k := base; ; k += base {
+			if pos == len(encoded) {
+				return "", fmt.Errorf("idna: invalid label %q", encoded)
+			}
+			digit, ok := decodeDigit(encoded[pos])
+			if !ok {
+				return "", fmt.Errorf("idna: invalid label %q", encoded)
+			}
+			pos++
+			i += digit * w
+			if i < 0 {
+				return "", fmt.Errorf("idna: invalid label %q", encoded)
+			}
+			t := k - bias
+			if t < tmin {
+				t = tmin
+			} else if t > tmax {
+				t = tmax
+			}
+			if digit < t {
+				break
+			}
+			w *= base - t
+			if w >= math.MaxInt32/base {
+				return "", fmt.Errorf("idna: invalid label %q", encoded)
+			}
+		}
+		x := int32(len(output) + 1)
+		bias = adapt(i-oldI, x, oldI == 0)
+		n += i / x
+		i %= x
+		if n > utf8.MaxRune || len(output) >= 1024 {
+			return "", fmt.Errorf("idna: invalid label %q", encoded)
+		}
+		output = append(output, 0)
+		copy(output[i+1:], output[i:])
+		output[i] = n
+		i++
+	}
+	return string(output), nil
+}
+
+// encode encodes a string as specified in section 6.3 and prepends prefix to
+// the result.
+//
+// The "while h < length(input)" line in the specification becomes "for
+// remaining != 0" in the Go code, because len(s) in Go is in bytes, not runes.
+func encode(prefix, s string) (string, error) {
+	output := make([]byte, len(prefix), len(prefix)+1+2*len(s))
+	copy(output, prefix)
+	delta, n, bias := int32(0), initialN, initialBias
+	b, remaining := int32(0), int32(0)
+	for _, r := range s {
+		if r < 0x80 {
+			b++
+			output = append(output, byte(r))
+		} else {
+			remaining++
+		}
+	}
+	h := b
+	if b > 0 {
+		output = append(output, '-')
+	}
+	for remaining != 0 {
+		m := int32(0x7fffffff)
+		for _, r := range s {
+			if m > r && r >= n {
+				m = r
+			}
+		}
+		delta += (m - n) * (h + 1)
+		if delta < 0 {
+			return "", fmt.Errorf("idna: invalid label %q", s)
+		}
+		n = m
+		for _, r := range s {
+			if r < n {
+				delta++
+				if delta < 0 {
+					return "", fmt.Errorf("idna: invalid label %q", s)
+				}
+				continue
+			}
+			if r > n {
+				continue
+			}
+			q := delta
+			for k := base; ; k += base {
+				t := k - bias
+				if t < tmin {
+					t = tmin
+				} else if t > tmax {
+					t = tmax
+				}
+				if q < t {
+					break
+				}
+				output = append(output, encodeDigit(t+(q-t)%(base-t)))
+				q = (q - t) / (base - t)
+			}
+			output = append(output, encodeDigit(q))
+			bias = adapt(delta, h+1, h == b)
+			delta = 0
+			h++
+			remaining--
+		}
+		delta++
+		n++
+	}
+	return string(output), nil
+}
+
+func decodeDigit(x byte) (digit int32, ok bool) {
+	switch {
+	case '0' <= x && x <= '9':
+		return int32(x - ('0' - 26)), true
+	case 'A' <= x && x <= 'Z':
+		return int32(x - 'A'), true
+	case 'a' <= x && x <= 'z':
+		return int32(x - 'a'), true
+	}
+	return 0, false
+}
+
+func encodeDigit(digit int32) byte {
+	switch {
+	case 0 <= digit && digit < 26:
+		return byte(digit + 'a')
+	case 26 <= digit && digit < 36:
+		return byte(digit + ('0' - 26))
+	}
+	panic("idna: internal error in punycode encoding")
+}
+
+// adapt is the bias adaptation function specified in section 6.1.
+func adapt(delta, numPoints int32, firstTime bool) int32 {
+	if firstTime {
+		delta /= damp
+	} else {
+		delta /= 2
+	}
+	delta += delta / numPoints
+	k := int32(0)
+	for delta > ((base-tmin)*tmax)/2 {
+		delta /= base - tmin
+		k += base
+	}
+	return k + (base-tmin+1)*delta/(delta+skew)
+}