Merge pull request #396 from hashicorp/f-consul-schema

Port Consul provider to new helper.Schema, add Token support

builtin/bins/provider-consul/main.go

@@ -3,13 +3,10 @@ package main
 import (
 	"github.com/hashicorp/terraform/builtin/providers/consul"
 	"github.com/hashicorp/terraform/plugin"
-	"github.com/hashicorp/terraform/terraform"
 )
 
 func main() {
 	plugin.Serve(&plugin.ServeOpts{
-		ProviderFunc: func() terraform.ResourceProvider {
-			return new(consul.ResourceProvider)
-		},
+		ProviderFunc: consul.Provider,
 	})
 }

builtin/providers/consul/resource_consul_keys.go

@@ -1,116 +1,229 @@
 package consul
 
 import (
+	"bytes"
 	"fmt"
 	"log"
 	"strconv"
 
 	"github.com/armon/consul-api"
-	"github.com/hashicorp/terraform/flatmap"
-	"github.com/hashicorp/terraform/helper/config"
-	"github.com/hashicorp/terraform/helper/diff"
-	"github.com/hashicorp/terraform/terraform"
+	"github.com/hashicorp/terraform/helper/hashcode"
+	"github.com/hashicorp/terraform/helper/schema"
 )
 
-func resource_consul_keys_validation() *config.Validator {
-	return &config.Validator{
-		Required: []string{
-			"key.*.name",
-			"key.*.path",
-		},
-		Optional: []string{
-			"datacenter",
-			"key.*.value",
-			"key.*.default",
-			"key.*.delete",
+func resourceConsulKeys() *schema.Resource {
+	return &schema.Resource{
+		Create: resourceConsulKeysCreate,
+		Update: resourceConsulKeysCreate,
+		Read:   resourceConsulKeysRead,
+		Delete: resourceConsulKeysDelete,
+
+		Schema: map[string]*schema.Schema{
+			"datacenter": &schema.Schema{
+				Type:     schema.TypeString,
+				Optional: true,
+				Computed: true,
+				ForceNew: true,
+			},
+
+			"token": &schema.Schema{
+				Type:     schema.TypeString,
+				Optional: true,
+			},
+
+			"keys": &schema.Schema{
+				Type:     schema.TypeSet,
+				Optional: true,
+				Elem: &schema.Resource{
+					Schema: map[string]*schema.Schema{
+						"name": &schema.Schema{
+							Type:     schema.TypeString,
+							Required: true,
+						},
+
+						"path": &schema.Schema{
+							Type:     schema.TypeString,
+							Required: true,
+						},
+
+						"value": &schema.Schema{
+							Type:     schema.TypeString,
+							Optional: true,
+							Computed: true,
+						},
+
+						"default": &schema.Schema{
+							Type:     schema.TypeString,
+							Optional: true,
+						},
+
+						"delete": &schema.Schema{
+							Type:     schema.TypeBool,
+							Optional: true,
+						},
+					},
+				},
+				Set: resourceConsulKeysHash,
+			},
+
+			"var": &schema.Schema{
+				Type:     schema.TypeMap,
+				Computed: true,
+			},
 		},
 	}
 }
-func resource_consul_keys_update(
-	s *terraform.InstanceState,
-	d *terraform.InstanceDiff,
-	meta interface{}) (*terraform.InstanceState, error) {
-	return resource_consul_keys_create(s, d, meta)
+
+func resourceConsulKeysHash(v interface{}) int {
+	var buf bytes.Buffer
+	m := v.(map[string]interface{})
+	buf.WriteString(fmt.Sprintf("%s-", m["name"].(string)))
+	buf.WriteString(fmt.Sprintf("%s-", m["path"].(string)))
+	return hashcode.String(buf.String())
 }
 
-func resource_consul_keys_create(
-	s *terraform.InstanceState,
-	d *terraform.InstanceDiff,
-	meta interface{}) (*terraform.InstanceState, error) {
-	p := meta.(*ResourceProvider)
+func resourceConsulKeysCreate(d *schema.ResourceData, meta interface{}) error {
+	client := meta.(*consulapi.Client)
+	kv := client.KV()
 
-	// Merge the diff into the state so that we have all the attributes
-	// properly.
-	rs := s.MergeDiff(d)
-	rs.ID = "consul"
-
-	// Check if the datacenter should be computed
-	dc := rs.Attributes["datacenter"]
-	if aDiff, ok := d.Attributes["datacenter"]; ok && aDiff.NewComputed {
+	// Resolve the datacenter first, all the other keys are dependent
+	// on this.
+	var dc string
+	if v, ok := d.GetOk("datacenter"); ok {
+		dc = v.(string)
+		log.Printf("[DEBUG] Consul datacenter: %s", dc)
+	} else {
+		log.Printf("[DEBUG] Resolving Consul datacenter...")
 		var err error
-		dc, err = get_dc(p.client)
+		dc, err = get_dc(client)
 		if err != nil {
-			return rs, fmt.Errorf("Failed to get agent datacenter: %v", err)
+			return err
 		}
-		rs.Attributes["datacenter"] = dc
+	}
+	var token string
+	if v, ok := d.GetOk("token"); ok {
+		token = v.(string)
 	}
 
-	// Get the keys
-	keys, ok := flatmap.Expand(rs.Attributes, "key").([]interface{})
-	if !ok {
-		return rs, fmt.Errorf("Failed to unroll keys")
-	}
+	// Setup the operations using the datacenter
+	qOpts := consulapi.QueryOptions{Datacenter: dc, Token: token}
+	wOpts := consulapi.WriteOptions{Datacenter: dc, Token: token}
 
-	kv := p.client.KV()
-	qOpts := consulapi.QueryOptions{Datacenter: dc}
-	wOpts := consulapi.WriteOptions{Datacenter: dc}
-	for idx, raw := range keys {
+	// Store the computed vars
+	vars := make(map[string]string)
+
+	// Extract the keys
+	keys := d.Get("keys").(*schema.Set).List()
+	for _, raw := range keys {
 		key, path, sub, err := parse_key(raw)
 		if err != nil {
-			return rs, err
+			return err
 		}
 
 		if valueRaw, ok := sub["value"]; ok {
 			value, ok := valueRaw.(string)
 			if !ok {
-				return rs, fmt.Errorf("Failed to get value for key '%s'", key)
+				return fmt.Errorf("Failed to get value for key '%s'", key)
 			}
 
 			log.Printf("[DEBUG] Setting key '%s' to '%v' in %s", path, value, dc)
 			pair := consulapi.KVPair{Key: path, Value: []byte(value)}
 			if _, err := kv.Put(&pair, &wOpts); err != nil {
-				return rs, fmt.Errorf("Failed to set Consul key '%s': %v", path, err)
+				return fmt.Errorf("Failed to set Consul key '%s': %v", path, err)
 			}
-			rs.Attributes[fmt.Sprintf("var.%s", key)] = value
-			rs.Attributes[fmt.Sprintf("key.%d.value", idx)] = value
+			vars[key] = value
+			sub["value"] = value
 
 		} else {
 			log.Printf("[DEBUG] Getting key '%s' in %s", path, dc)
 			pair, _, err := kv.Get(path, &qOpts)
 			if err != nil {
-				return rs, fmt.Errorf("Failed to get Consul key '%s': %v", path, err)
+				return fmt.Errorf("Failed to get Consul key '%s': %v", path, err)
 			}
-			rs.Attributes[fmt.Sprintf("var.%s", key)] = attribute_value(sub, key, pair)
+			value := attribute_value(sub, key, pair)
+			vars[key] = value
+			sub["value"] = value
 		}
 	}
-	return rs, nil
+
+	// Update the resource
+	d.SetId("consul")
+	d.Set("datacenter", dc)
+	d.Set("keys", keys)
+	d.Set("var", vars)
+	return nil
 }
 
-func resource_consul_keys_destroy(
-	s *terraform.InstanceState,
-	meta interface{}) error {
-	p := meta.(*ResourceProvider)
-	client := p.client
+func resourceConsulKeysRead(d *schema.ResourceData, meta interface{}) error {
+	client := meta.(*consulapi.Client)
 	kv := client.KV()
 
-	// Get the keys
-	keys, ok := flatmap.Expand(s.Attributes, "key").([]interface{})
-	if !ok {
-		return fmt.Errorf("Failed to unroll keys")
+	// Get the DC, error if not available.
+	var dc string
+	if v, ok := d.GetOk("datacenter"); ok {
+		dc = v.(string)
+		log.Printf("[DEBUG] Consul datacenter: %s", dc)
+	} else {
+		return fmt.Errorf("Missing datacenter configuration")
+	}
+	var token string
+	if v, ok := d.GetOk("token"); ok {
+		token = v.(string)
 	}
 
-	dc := s.Attributes["datacenter"]
-	wOpts := consulapi.WriteOptions{Datacenter: dc}
+	// Setup the operations using the datacenter
+	qOpts := consulapi.QueryOptions{Datacenter: dc, Token: token}
+
+	// Store the computed vars
+	vars := make(map[string]string)
+
+	// Extract the keys
+	keys := d.Get("keys").(*schema.Set).List()
+	for _, raw := range keys {
+		key, path, sub, err := parse_key(raw)
+		if err != nil {
+			return err
+		}
+
+		log.Printf("[DEBUG] Refreshing value of key '%s' in %s", path, dc)
+		pair, _, err := kv.Get(path, &qOpts)
+		if err != nil {
+			return fmt.Errorf("Failed to get value for path '%s' from Consul: %v", path, err)
+		}
+
+		value := attribute_value(sub, key, pair)
+		vars[key] = value
+		sub["value"] = value
+	}
+
+	// Update the resource
+	d.Set("keys", keys)
+	d.Set("var", vars)
+	return nil
+}
+
+func resourceConsulKeysDelete(d *schema.ResourceData, meta interface{}) error {
+	client := meta.(*consulapi.Client)
+	kv := client.KV()
+
+	// Get the DC, error if not available.
+	var dc string
+	if v, ok := d.GetOk("datacenter"); ok {
+		dc = v.(string)
+		log.Printf("[DEBUG] Consul datacenter: %s", dc)
+	} else {
+		return fmt.Errorf("Missing datacenter configuration")
+	}
+	var token string
+	if v, ok := d.GetOk("token"); ok {
+		token = v.(string)
+	}
+
+	// Setup the operations using the datacenter
+	wOpts := consulapi.WriteOptions{Datacenter: dc, Token: token}
+
+	// Extract the keys
+	keys := d.Get("keys").(*schema.Set).List()
 	for _, raw := range keys {
 		_, path, sub, err := parse_key(raw)
 		if err != nil {
@@ -128,76 +241,12 @@ func resource_consul_keys_destroy(
 			return fmt.Errorf("Failed to delete Consul key '%s': %v", path, err)
 		}
 	}
+
+	// Clear the ID
+	d.SetId("")
 	return nil
 }
 
-func resource_consul_keys_diff(
-	s *terraform.InstanceState,
-	c *terraform.ResourceConfig,
-	meta interface{}) (*terraform.InstanceDiff, error) {
-
-	// Determine the list of computed variables
-	var computed []string
-	keys, ok := flatmap.Expand(flatmap.Flatten(c.Config), "key").([]interface{})
-	if !ok {
-		goto AFTER
-	}
-	for _, sub := range keys {
-		key, _, _, err := parse_key(sub)
-		if err != nil {
-			continue
-		}
-		computed = append(computed, "var."+key)
-	}
-
-AFTER:
-	b := &diff.ResourceBuilder{
-		Attrs: map[string]diff.AttrType{
-			"datacenter": diff.AttrTypeCreate,
-			"key":        diff.AttrTypeUpdate,
-		},
-		ComputedAttrsUpdate: computed,
-	}
-	return b.Diff(s, c)
-}
-
-func resource_consul_keys_refresh(
-	s *terraform.InstanceState,
-	meta interface{}) (*terraform.InstanceState, error) {
-	p := meta.(*ResourceProvider)
-	client := p.client
-	kv := client.KV()
-
-	// Get the list of keys
-	keys, ok := flatmap.Expand(s.Attributes, "key").([]interface{})
-	if !ok {
-		return s, fmt.Errorf("Failed to unroll keys")
-	}
-
-	// Update each key
-	dc := s.Attributes["datacenter"]
-	opts := consulapi.QueryOptions{Datacenter: dc}
-	for idx, raw := range keys {
-		key, path, sub, err := parse_key(raw)
-		if err != nil {
-			return s, err
-		}
-
-		log.Printf("[DEBUG] Refreshing value of key '%s' in %s", path, dc)
-		pair, _, err := kv.Get(path, &opts)
-		if err != nil {
-			return s, fmt.Errorf("Failed to get value for path '%s' from Consul: %v", path, err)
-		}
-
-		setVal := attribute_value(sub, key, pair)
-		s.Attributes[fmt.Sprintf("var.%s", key)] = setVal
-		if _, ok := sub["value"]; ok {
-			s.Attributes[fmt.Sprintf("key.%d.value", idx)] = setVal
-		}
-	}
-	return s, nil
-}
-
 // parse_key is used to parse a key into a name, path, config or error
 func parse_key(raw interface{}) (string, string, map[string]interface{}, error) {
 	sub, ok := raw.(map[string]interface{})
@@ -217,7 +266,8 @@ func parse_key(raw interface{}) (string, string, map[string]interface{}, error)
 	return key, path, sub, nil
 }
 
-// attribute_value determienes the value for a key
+// attribute_value determines the value for a key, potentially
+// using a default value if provided.
 func attribute_value(sub map[string]interface{}, key string, pair *consulapi.KVPair) string {
 	// Use the value if given
 	if pair != nil {

builtin/providers/consul/resource_consul_keys_test.go

@@ -29,7 +29,7 @@ func TestAccConsulKeys(t *testing.T) {
 }
 
 func testAccCheckConsulKeysDestroy(s *terraform.State) error {
-	kv := testAccProvider.client.KV()
+	kv := testAccProvider.Meta().(*consulapi.Client).KV()
 	opts := &consulapi.QueryOptions{Datacenter: "nyc1"}
 	pair, _, err := kv.Get("test/set", opts)
 	if err != nil {
@@ -43,7 +43,7 @@ func testAccCheckConsulKeysDestroy(s *terraform.State) error {
 
 func testAccCheckConsulKeysExists() resource.TestCheckFunc {
 	return func(s *terraform.State) error {
-		kv := testAccProvider.client.KV()
+		kv := testAccProvider.Meta().(*consulapi.Client).KV()
 		opts := &consulapi.QueryOptions{Datacenter: "nyc1"}
 		pair, _, err := kv.Get("test/set", opts)
 		if err != nil {

builtin/providers/consul/resource_provider.go

@@ -3,71 +3,40 @@ package consul
 import (
 	"log"
 
-	"github.com/armon/consul-api"
-	"github.com/hashicorp/terraform/helper/config"
+	"github.com/hashicorp/terraform/helper/schema"
 	"github.com/hashicorp/terraform/terraform"
+	"github.com/mitchellh/mapstructure"
 )
 
-type ResourceProvider struct {
-	Config Config
-	client *consulapi.Client
-}
+// Provider returns a terraform.ResourceProvider.
+func Provider() terraform.ResourceProvider {
+	return &schema.Provider{
+		Schema: map[string]*schema.Schema{
+			"datacenter": &schema.Schema{
+				Type:     schema.TypeString,
+				Optional: true,
+			},
 
-func (p *ResourceProvider) Input(
-	input terraform.UIInput,
-	c *terraform.ResourceConfig) (*terraform.ResourceConfig, error) {
-	return c, nil
-}
-
-func (p *ResourceProvider) Validate(c *terraform.ResourceConfig) ([]string, []error) {
-	v := &config.Validator{
-		Optional: []string{
-			"datacenter",
-			"address",
+			"address": &schema.Schema{
+				Type:     schema.TypeString,
+				Optional: true,
+			},
 		},
+
+		ResourcesMap: map[string]*schema.Resource{
+			"consul_keys": resourceConsulKeys(),
+		},
+
+		ConfigureFunc: providerConfigure,
 	}
-	return v.Validate(c)
 }
 
-func (p *ResourceProvider) ValidateResource(
-	t string, c *terraform.ResourceConfig) ([]string, []error) {
-	return resourceMap.Validate(t, c)
-}
-
-func (p *ResourceProvider) Configure(c *terraform.ResourceConfig) error {
-	if _, err := config.Decode(&p.Config, c.Config); err != nil {
-		return err
+func providerConfigure(d *schema.ResourceData) (interface{}, error) {
+	var config Config
+	configRaw := d.Get("").(map[string]interface{})
+	if err := mapstructure.Decode(configRaw, &config); err != nil {
+		return nil, err
 	}
-
 	log.Printf("[INFO] Initializing Consul client")
-	var err error
-	p.client, err = p.Config.Client()
-	if err != nil {
-		return err
-	}
-	return nil
-}
-
-func (p *ResourceProvider) Apply(
-	info *terraform.InstanceInfo,
-	s *terraform.InstanceState,
-	d *terraform.InstanceDiff) (*terraform.InstanceState, error) {
-	return resourceMap.Apply(info, s, d, p)
-}
-
-func (p *ResourceProvider) Diff(
-	info *terraform.InstanceInfo,
-	s *terraform.InstanceState,
-	c *terraform.ResourceConfig) (*terraform.InstanceDiff, error) {
-	return resourceMap.Diff(info, s, c, p)
-}
-
-func (p *ResourceProvider) Refresh(
-	info *terraform.InstanceInfo,
-	s *terraform.InstanceState) (*terraform.InstanceState, error) {
-	return resourceMap.Refresh(info, s, p)
-}
-
-func (p *ResourceProvider) Resources() []terraform.ResourceType {
-	return resourceMap.Resources()
+	return config.Client()
 }

builtin/providers/consul/resource_provider_test.go

@@ -1,30 +1,35 @@
 package consul
 
 import (
-	"reflect"
 	"testing"
 
 	"github.com/hashicorp/terraform/config"
+	"github.com/hashicorp/terraform/helper/schema"
 	"github.com/hashicorp/terraform/terraform"
 )
 
 var testAccProviders map[string]terraform.ResourceProvider
-var testAccProvider *ResourceProvider
+var testAccProvider *schema.Provider
 
 func init() {
-	testAccProvider = new(ResourceProvider)
-	testAccProvider.Config.Address = "demo.consul.io:80"
+	testAccProvider = Provider().(*schema.Provider)
 	testAccProviders = map[string]terraform.ResourceProvider{
 		"consul": testAccProvider,
 	}
 }
 
+func TestResourceProvider(t *testing.T) {
+	if err := Provider().(*schema.Provider).InternalValidate(); err != nil {
+		t.Fatalf("err: %s", err)
+	}
+}
+
 func TestResourceProvider_impl(t *testing.T) {
-	var _ terraform.ResourceProvider = new(ResourceProvider)
+	var _ terraform.ResourceProvider = Provider()
 }
 
 func TestResourceProvider_Configure(t *testing.T) {
-	rp := new(ResourceProvider)
+	rp := Provider()
 
 	raw := map[string]interface{}{
 		"address":    "demo.consul.io:80",
@@ -40,13 +45,4 @@ func TestResourceProvider_Configure(t *testing.T) {
 	if err != nil {
 		t.Fatalf("err: %s", err)
 	}
-
-	expected := Config{
-		Address:    "demo.consul.io:80",
-		Datacenter: "nyc1",
-	}
-
-	if !reflect.DeepEqual(rp.Config, expected) {
-		t.Fatalf("bad: %#v", rp.Config)
-	}
 }

builtin/providers/consul/resources.go

@@ -1,24 +0,0 @@
-package consul
-
-import (
-	"github.com/hashicorp/terraform/helper/resource"
-)
-
-// resourceMap is the mapping of resources we support to their basic
-// operations. This makes it easy to implement new resource types.
-var resourceMap *resource.Map
-
-func init() {
-	resourceMap = &resource.Map{
-		Mapping: map[string]resource.Resource{
-			"consul_keys": resource.Resource{
-				ConfigValidator: resource_consul_keys_validation(),
-				Create:          resource_consul_keys_create,
-				Destroy:         resource_consul_keys_destroy,
-				Update:          resource_consul_keys_update,
-				Diff:            resource_consul_keys_diff,
-				Refresh:         resource_consul_keys_refresh,
-			},
-		},
-	}
-}

website/source/docs/providers/consul/r/keys.html.markdown

@@ -16,6 +16,7 @@ and to expose infrastructure details to clients.
 ```
 resource "consul_keys" "app" {
     datacenter = "nyc1"
+    token = "abcd"
 
     # Read the launch AMI from Consul
     key {
@@ -46,6 +47,9 @@ The following arguments are supported:
 * `datacenter` - (Optional) The datacenter to use. This overrides the
   datacenter in the provider setup and the agent's default datacenter.
 
+* `token` - (Optional) The ACL token to use. This overrides the
+  token that the agent provides by default.
+
 * `key` - (Required) Specifies a key in Consul to be read or written.
   Supported values documented below.