Add a `consul_catalog_services` resource that enumerates the list of services in a given Consul datacenter.

builtin/providers/consul/data_source_consul_catalog_service.go

@@ -9,7 +9,7 @@ import (
 )
 
 const (
-	queryOptServicesAttr = "services"
+	catalogServiceElem = "services"
 
 	catalogServiceCreateIndex              = "create_index"
 	catalogServiceDatacenter               = "datacenter"
@@ -37,13 +37,15 @@ func dataSourceConsulCatalogService() *schema.Resource {
 		Schema: map[string]*schema.Schema{
 			// Data Source Predicate(s)
 			catalogServiceDatacenter: &schema.Schema{
-				// Used in the query, must be stored and force a refresh if the value changes.
+				// Used in the query, must be stored and force a refresh if the value
+				// changes.
 				Computed: true,
 				Type:     schema.TypeString,
 				ForceNew: true,
 			},
 			catalogServiceTag: &schema.Schema{
-				// Used in the query, must be stored and force a refresh if the value changes.
+				// Used in the query, must be stored and force a refresh if the value
+				// changes.
 				Computed: true,
 				Type:     schema.TypeString,
 				ForceNew: true,
@@ -55,7 +57,7 @@ func dataSourceConsulCatalogService() *schema.Resource {
 			queryOpts: schemaQueryOpts,
 
 			// Out parameters
-			queryOptServicesAttr: &schema.Schema{
+			catalogServiceElem: &schema.Schema{
 				Computed: true,
 				Type:     schema.TypeList,
 				Elem: &schema.Resource{
@@ -158,7 +160,6 @@ func dataSourceConsulCatalogServiceRead(d *schema.ResourceData, meta interface{}
 	}
 
 	l := make([]interface{}, 0, len(services))
-
 	for _, service := range services {
 		const defaultServiceAttrs = 13
 		m := make(map[string]interface{}, defaultServiceAttrs)
@@ -197,7 +198,7 @@ func dataSourceConsulCatalogServiceRead(d *schema.ResourceData, meta interface{}
 
 	d.Set(catalogServiceDatacenter, queryOpts.Datacenter)
 	d.Set(catalogServiceTag, serviceTag)
-	if err := d.Set(queryOptServicesAttr, l); err != nil {
+	if err := d.Set(catalogServiceElem, l); err != nil {
 		return errwrap.Wrapf("Unable to store services: {{err}}", err)
 	}
 

builtin/providers/consul/data_source_consul_catalog_services.go

@@ -0,0 +1,90 @@
+package consul
+
+import (
+	"fmt"
+	"sort"
+	"strings"
+
+	consulapi "github.com/hashicorp/consul/api"
+	"github.com/hashicorp/errwrap"
+	"github.com/hashicorp/terraform/helper/schema"
+)
+
+const (
+	catalogServicesDatacenter = "datacenter"
+	catalogServicesNames      = "names"
+
+	catalogServicesServiceName = "name"
+	catalogServicesServiceTags = "tags"
+)
+
+func dataSourceConsulCatalogServices() *schema.Resource {
+	return &schema.Resource{
+		Read: dataSourceConsulCatalogServicesRead,
+		Schema: map[string]*schema.Schema{
+			// Data Source Predicate(s)
+			catalogServicesDatacenter: &schema.Schema{
+				// Used in the query, must be stored and force a refresh if the value
+				// changes.
+				Computed: true,
+				Type:     schema.TypeString,
+				ForceNew: true,
+			},
+			queryOpts: schemaQueryOpts,
+
+			// Out parameters
+			catalogServicesNames: &schema.Schema{
+				Computed: true,
+				Type:     schema.TypeMap,
+				Elem: &schema.Resource{
+					Schema: map[string]*schema.Schema{
+						catalogServiceServiceTags: &schema.Schema{
+							// FIXME(sean@): Tags is currently a space separated list of tags.
+							// The ideal structure should be map[string][]string instead.
+							// When this is supported in the future this should be changed to
+							// be a TypeList instead.
+							Type:     schema.TypeString,
+							Computed: true,
+						},
+					},
+				},
+			},
+		},
+	}
+}
+
+func dataSourceConsulCatalogServicesRead(d *schema.ResourceData, meta interface{}) error {
+	client := meta.(*consulapi.Client)
+
+	// Parse out data source filters to populate Consul's query options
+	queryOpts, err := getQueryOpts(d, client)
+	if err != nil {
+		return errwrap.Wrapf("unable to get query options for fetching catalog services: {{err}}", err)
+	}
+
+	services, meta, err := client.Catalog().Services(queryOpts)
+	if err != nil {
+		return err
+	}
+
+	m := make(map[string]interface{}, len(services))
+	for name, tags := range services {
+		tagList := make([]string, 0, len(tags))
+		for _, tag := range tags {
+			tagList = append(tagList, tag)
+		}
+
+		sort.Strings(tagList)
+		m[name] = strings.Join(tagList, " ")
+	}
+
+	const idKeyFmt = "catalog-services-%s"
+	d.SetId(fmt.Sprintf(idKeyFmt, queryOpts.Datacenter))
+
+	d.Set(catalogServicesDatacenter, queryOpts.Datacenter)
+	if err := d.Set(catalogServicesNames, m); err != nil {
+		return errwrap.Wrapf("Unable to store services: {{err}}", err)
+	}
+
+	return nil
+}

builtin/providers/consul/data_source_consul_catalog_services_test.go

@@ -0,0 +1,36 @@
+package consul
+
+import (
+	"testing"
+
+	"github.com/hashicorp/terraform/helper/resource"
+)
+
+func TestAccDataConsulCatalogServices_basic(t *testing.T) {
+	resource.Test(t, resource.TestCase{
+		PreCheck:  func() { testAccPreCheck(t) },
+		Providers: testAccProviders,
+		Steps: []resource.TestStep{
+			resource.TestStep{
+				Config: testAccDataConsulCatalogServicesConfig,
+				Check: resource.ComposeTestCheckFunc(
+					testAccCheckDataSourceValue("data.consul_catalog_services.read", "datacenter", "dc1"),
+					testAccCheckDataSourceValue("data.consul_catalog_services.read", "names.%", "1"),
+					testAccCheckDataSourceValue("data.consul_catalog_services.read", "names.consul", ""),
+				),
+			},
+		},
+	})
+}
+
+const testAccDataConsulCatalogServicesConfig = `
+data "consul_catalog_services" "read" {
+  query_options {
+    allow_stale = true
+    require_consistent = false
+    token = ""
+    wait_index = 0
+    wait_time = "1m"
+  }
+}
+`

builtin/providers/consul/resource_provider.go

@@ -64,10 +64,11 @@ func Provider() terraform.ResourceProvider {
 		},
 
 		DataSourcesMap: map[string]*schema.Resource{
-			"consul_agent_self":      dataSourceConsulAgentSelf(),
-			"consul_catalog_nodes":   dataSourceConsulCatalogNodes(),
-			"consul_catalog_service": dataSourceConsulCatalogService(),
-			"consul_keys":            dataSourceConsulKeys(),
+			"consul_agent_self":       dataSourceConsulAgentSelf(),
+			"consul_catalog_nodes":    dataSourceConsulCatalogNodes(),
+			"consul_catalog_service":  dataSourceConsulCatalogService(),
+			"consul_catalog_services": dataSourceConsulCatalogServices(),
+			"consul_keys":             dataSourceConsulKeys(),
 		},
 
 		ResourcesMap: map[string]*schema.Resource{