Merge pull request #8206 from hashicorp/f-aws-account-id

provider/aws: Add aws_account_id data source

builtin/providers/aws/data_source_aws_caller_identity.go

@@ -0,0 +1,40 @@
+package aws
+
+import (
+	"fmt"
+	"log"
+	"time"
+
+	"github.com/hashicorp/terraform/helper/schema"
+)
+
+func dataSourceAwsCallerIdentity() *schema.Resource {
+	return &schema.Resource{
+		Read: dataSourceAwsCallerIdentityRead,
+
+		Schema: map[string]*schema.Schema{
+			"account_id": {
+				Type:     schema.TypeString,
+				Computed: true,
+			},
+		},
+	}
+}
+
+func dataSourceAwsCallerIdentityRead(d *schema.ResourceData, meta interface{}) error {
+	client := meta.(*AWSClient)
+
+	log.Printf("[DEBUG] Reading Caller Identity.")
+	d.SetId(time.Now().UTC().String())
+
+	if client.accountid == "" {
+		log.Println("[DEBUG] No Account ID available, failing")
+		return fmt.Errorf("No AWS Account ID is available to the provider. Please ensure that\n" +
+			"skip_requesting_account_id is not set on the AWS provider.")
+	}
+
+	log.Printf("[DEBUG] Setting AWS Account ID to %s.", client.accountid)
+	d.Set("account_id", meta.(*AWSClient).accountid)
+
+	return nil
+}

builtin/providers/aws/data_source_aws_caller_identity_test.go

@@ -0,0 +1,48 @@
+package aws
+
+import (
+	"fmt"
+	"testing"
+
+	"github.com/hashicorp/terraform/helper/resource"
+	"github.com/hashicorp/terraform/terraform"
+)
+
+func TestAccAWSCallerIdentity_basic(t *testing.T) {
+	resource.Test(t, resource.TestCase{
+		PreCheck:  func() { testAccPreCheck(t) },
+		Providers: testAccProviders,
+		Steps: []resource.TestStep{
+			{
+				Config: testAccCheckAwsCallerIdentityConfig_basic,
+				Check: resource.ComposeTestCheckFunc(
+					testAccCheckAwsCallerIdentityAccountId("data.aws_caller_identity.current"),
+				),
+			},
+		},
+	})
+}
+
+func testAccCheckAwsCallerIdentityAccountId(n string) resource.TestCheckFunc {
+	return func(s *terraform.State) error {
+		rs, ok := s.RootModule().Resources[n]
+		if !ok {
+			return fmt.Errorf("Can't find AccountID resource: %s", n)
+		}
+
+		if rs.Primary.ID == "" {
+			return fmt.Errorf("Account Id resource ID not set.")
+		}
+
+		expected := testAccProvider.Meta().(*AWSClient).accountid
+		if rs.Primary.Attributes["account_id"] != expected {
+			return fmt.Errorf("Incorrect Account ID: expected %q, got %q", expected, rs.Primary.ID)
+		}
+
+		return nil
+	}
+}
+
+const testAccCheckAwsCallerIdentityConfig_basic = `
+data "aws_caller_identity" "current" { }
+`

builtin/providers/aws/provider.go

@@ -142,6 +142,7 @@ func Provider() terraform.ResourceProvider {
 		DataSourcesMap: map[string]*schema.Resource{
 			"aws_ami":                      dataSourceAwsAmi(),
 			"aws_availability_zones":       dataSourceAwsAvailabilityZones(),
+			"aws_caller_identity":          dataSourceAwsCallerIdentity(),
 			"aws_iam_policy_document":      dataSourceAwsIamPolicyDocument(),
 			"aws_ip_ranges":                dataSourceAwsIPRanges(),
 			"aws_s3_bucket_object":         dataSourceAwsS3BucketObject(),

website/source/docs/providers/aws/d/caller_identity.html.markdown

@@ -0,0 +1,35 @@
+---
+layout: "aws"
+page_title: "AWS: aws_caller_identity"
+sidebar_current: "docs-aws-datasource-caller-identity"
+description: |-
+  Get information about the identity of the caller for the provider
+  connection to AWS.
+---
+
+# aws\_caller\_identity
+
+Use this data source to get the access to the effective Account ID in
+which Terraform is working.
+
+~> **NOTE on `aws_caller_identity`:** - an Account ID is only available
+if `skip_requesting_account_id` is not set on the AWS provider. In such
+cases, the data source will return an error.
+
+## Example Usage
+
+```
+data "aws_caller_identity" "current" { }
+
+output "account_id" {
+  value = "${data.aws_caller_identity.current.account_id}"
+}
+```
+
+## Argument Reference
+
+There are no arguments available for this data source.
+
+## Attributes Reference
+
+`account_id` is set to the ID of the AWS account. 

website/source/layouts/aws.erb

@@ -13,12 +13,16 @@
                 <li<%= sidebar_current(/^docs-aws-datasource/) %>>
                 <a href="#">Data Sources</a>
                     <ul class="nav nav-visible">
+
                         <li<%= sidebar_current("docs-aws-datasource-ami") %>>
                             <a href="/docs/providers/aws/d/ami.html">aws_ami</a>
                         </li>
                         <li<%= sidebar_current("docs-aws-datasource-availability-zones") %>>
                             <a href="/docs/providers/aws/d/availability_zones.html">aws_availability_zones</a>
                         </li>
+                        <li<%= sidebar_current("docs-aws-datasource-caller-identity") %>>
+                          <a href="/docs/providers/aws/d/caller_identity.html">aws_caller_identity</a>
+                        </li>
                         <li<%= sidebar_current("docs-aws-datasource-ecs-container-definition") %>>
                             <a href="/docs/providers/aws/d/ecs_container_definition.html">aws_ecs_container_definition</a>
                         </li>