data-source/aws_launch_template: Support id as argument (#16457)

Author: yorinasub17

aws/data_source_aws_launch_template.go

@@ -29,6 +29,11 @@ func dataSourceAwsLaunchTemplate() *schema.Resource {
 				Type:     schema.TypeString,
 				Computed: true,
 			},
+			"id": {
+				Type:     schema.TypeString,
+				Optional: true,
+				Computed: true,
+			},
 			"default_version": {
 				Type:     schema.TypeInt,
 				Computed: true,
@@ -391,13 +396,17 @@ func dataSourceAwsLaunchTemplateRead(d *schema.ResourceData, meta interface{}) e
 	ignoreTagsConfig := meta.(*AWSClient).IgnoreTagsConfig
 
 	filters, filtersOk := d.GetOk("filter")
+	id, idOk := d.GetOk("id")
 	name, nameOk := d.GetOk("name")
 	tags, tagsOk := d.GetOk("tags")
 
 	params := &ec2.DescribeLaunchTemplatesInput{}
 	if filtersOk {
 		params.Filters = buildAwsDataSourceFilters(filters.(*schema.Set))
 	}
+	if idOk {
+		params.LaunchTemplateIds = []*string{aws.String(id.(string))}
+	}
 	if nameOk {
 		params.LaunchTemplateNames = []*string{aws.String(name.(string))}
 	}

aws/data_source_aws_launch_template_test.go

@@ -33,6 +33,30 @@ func TestAccAWSLaunchTemplateDataSource_basic(t *testing.T) {
 	})
 }
 
+func TestAccAWSLaunchTemplateDataSource_id_basic(t *testing.T) {
+	rName := acctest.RandomWithPrefix("tf-acc-test")
+	dataSourceName := "data.aws_launch_template.test"
+	resourceName := "aws_launch_template.test"
+
+	resource.ParallelTest(t, resource.TestCase{
+		PreCheck:     func() { testAccPreCheck(t) },
+		Providers:    testAccProviders,
+		CheckDestroy: testAccCheckAWSLaunchTemplateDestroy,
+		Steps: []resource.TestStep{
+			{
+				Config: testAccAWSLaunchTemplateDataSourceConfig_BasicId(rName),
+				Check: resource.ComposeTestCheckFunc(
+					resource.TestCheckResourceAttrPair(resourceName, "arn", dataSourceName, "arn"),
+					resource.TestCheckResourceAttrPair(resourceName, "default_version", dataSourceName, "default_version"),
+					resource.TestCheckResourceAttrPair(resourceName, "latest_version", dataSourceName, "latest_version"),
+					resource.TestCheckResourceAttrPair(resourceName, "name", dataSourceName, "name"),
+					resource.TestCheckResourceAttrPair(resourceName, "hibernation_options", dataSourceName, "hibernation_options"),
+				),
+			},
+		},
+	})
+}
+
 func TestAccAWSLaunchTemplateDataSource_filter_basic(t *testing.T) {
 	rName := acctest.RandomWithPrefix("tf-acc-test")
 	dataSourceName := "data.aws_launch_template.test"
@@ -256,6 +280,18 @@ data "aws_launch_template" "test" {
 `, rName)
 }
 
+func testAccAWSLaunchTemplateDataSourceConfig_BasicId(rName string) string {
+	return fmt.Sprintf(`
+resource "aws_launch_template" "test" {
+  name = %q
+}
+
+data "aws_launch_template" "test" {
+  id = aws_launch_template.test.id
+}
+`, rName)
+}
+
 func testAccAWSLaunchTemplateDataSourceConfigBasicFilter(rName string) string {
 	return fmt.Sprintf(`
 resource "aws_launch_template" "test" {

website/docs/d/launch_template.html.markdown

@@ -34,6 +34,7 @@ data "aws_launch_template" "test" {
 The following arguments are supported:
 
 * `filter` - (Optional) Configuration block(s) for filtering. Detailed below.
+* `id` - (Optional) The ID of the specific launch template to retrieve.
 * `name` - (Optional) The name of the launch template.
 * `tags` - (Optional) A map of tags, each pair of which must exactly match a pair on the desired Launch Template.