[Terraform] Add custom Service Account support to Dataflow Job resour…

…ce (#3238)

Signed-off-by: Modular Magician <[email protected]>

google/resource_dataflow_job.go

@@ -90,6 +90,12 @@ func resourceDataflowJob() *schema.Resource {
 				Type:     schema.TypeString,
 				Computed: true,
 			},
+
+			"service_account_email": {
+				Type:     schema.TypeString,
+				Optional: true,
+				ForceNew: true,
+			},
 		},
 	}
 }
@@ -115,9 +121,10 @@ func resourceDataflowJobCreate(d *schema.ResourceData, meta interface{}) error {
 	params := expandStringMap(d, "parameters")
 
 	env := dataflow.RuntimeEnvironment{
-		TempLocation: d.Get("temp_gcs_location").(string),
-		Zone:         zone,
-		MaxWorkers:   int64(d.Get("max_workers").(int)),
+		TempLocation:        d.Get("temp_gcs_location").(string),
+		Zone:                zone,
+		MaxWorkers:          int64(d.Get("max_workers").(int)),
+		ServiceAccountEmail: d.Get("service_account_email").(string),
 	}
 
 	request := dataflow.CreateJobFromTemplateRequest{

google/resource_dataflow_job_test.go

@@ -3,10 +3,13 @@ package google
 import (
 	"fmt"
 	"testing"
+	"time"
 
 	"github.com/hashicorp/terraform/helper/acctest"
 	"github.com/hashicorp/terraform/helper/resource"
 	"github.com/hashicorp/terraform/terraform"
+
+	"google.golang.org/api/compute/v1"
 )
 
 func TestAccDataflowJobCreate(t *testing.T) {
@@ -45,6 +48,26 @@ func TestAccDataflowJobRegionCreate(t *testing.T) {
 	})
 }
 
+func TestAccDataflowJobCreateWithServiceAccount(t *testing.T) {
+	t.Parallel()
+	resource.Test(t, resource.TestCase{
+		PreCheck:     func() { testAccPreCheck(t) },
+		Providers:    testAccProviders,
+		CheckDestroy: testAccCheckDataflowJobDestroy,
+		Steps: []resource.TestStep{
+			{
+				Config: testAccDataflowJobWithServiceAccount,
+				Check: resource.ComposeTestCheckFunc(
+					testAccDataflowJobExists(
+						"google_dataflow_job.big_data"),
+					testAccDataflowJobHasServiceAccount(
+						"google_dataflow_job.big_data"),
+				),
+			},
+		},
+	})
+}
+
 func testAccCheckDataflowJobDestroy(s *terraform.State) error {
 	for _, rs := range s.RootModule().Resources {
 		if rs.Type != "google_dataflow_job" {
@@ -105,6 +128,58 @@ func testAccDataflowJobExists(n string) resource.TestCheckFunc {
 	}
 }
 
+func testAccDataflowJobHasServiceAccount(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 ID is set")
+		}
+
+		config := testAccProvider.Meta().(*Config)
+
+		// Check that the service account was applied to the Dataflow job's
+		// generated instance template.
+		if serviceAccountEmail, ok := rs.Primary.Attributes["service_account_email"]; ok {
+			filter := fmt.Sprintf("properties.labels.dataflow_job_id = %s", rs.Primary.ID)
+			var serviceAccounts []*compute.ServiceAccount
+
+			// Wait for instance template generation.
+			err := resource.Retry(1*time.Minute, func() *resource.RetryError {
+				var err error
+				instanceTemplates, err :=
+					config.clientCompute.InstanceTemplates.List(config.Project).Filter(filter).MaxResults(2).Fields("items/properties/serviceAccounts/email").Do()
+				if err != nil {
+					return resource.NonRetryableError(err)
+				}
+				if len(instanceTemplates.Items) == 0 {
+					return resource.RetryableError(fmt.Errorf("no instance template found for dataflow job"))
+				}
+				if len(instanceTemplates.Items) > 1 {
+					return resource.NonRetryableError(fmt.Errorf("Wrong number of matching instance templates for dataflow job: %s, %d", rs.Primary.ID, len(instanceTemplates.Items)))
+				}
+				serviceAccounts = instanceTemplates.Items[0].Properties.ServiceAccounts
+				return nil
+			})
+
+			if err != nil {
+				return fmt.Errorf("Error getting service account from instance template: %s", err)
+			}
+
+			if len(serviceAccounts) > 1 {
+				return fmt.Errorf("Found multiple service accounts for dataflow job: %s, %d", rs.Primary.ID, len(serviceAccounts))
+			}
+			if serviceAccountEmail != serviceAccounts[0].Email {
+				return fmt.Errorf("Service account mismatch: %s != %s", serviceAccountEmail, serviceAccounts[0].Email)
+			}
+		}
+
+		return nil
+	}
+}
+
 func testAccDataflowJobRegionExists(n string) resource.TestCheckFunc {
 	return func(s *terraform.State) error {
 		rs, ok := s.RootModule().Resources[n]
@@ -171,3 +246,43 @@ resource "google_dataflow_job" "big_data" {
 
 	on_delete = "cancel"
 }`, acctest.RandString(10), acctest.RandString(10), getTestProjectFromEnv())
+
+var testAccDataflowJobWithServiceAccount = fmt.Sprintf(`
+resource "google_storage_bucket" "temp" {
+	name = "dfjob-test-%s-temp"
+
+	force_destroy = true
+}
+
+resource "google_service_account" "dataflow-sa" {
+  account_id   = "dataflow-sa"
+  display_name = "DataFlow Service Account"
+}
+
+resource "google_storage_bucket_iam_member" "dataflow-gcs" {
+  bucket = "${google_storage_bucket.temp.name}"
+  role   = "roles/storage.objectAdmin"
+  member = "serviceAccount:${google_service_account.dataflow-sa.email}"
+}
+
+resource "google_project_iam_member" "dataflow-worker" {
+  role   = "roles/dataflow.worker"
+  member = "serviceAccount:${google_service_account.dataflow-sa.email}"
+}
+
+resource "google_dataflow_job" "big_data" {
+	name = "dfjob-test-%s"
+
+	template_gcs_path = "gs://dataflow-templates/wordcount/template_file"
+	temp_gcs_location = "${google_storage_bucket.temp.url}"
+
+	parameters {
+		inputFile = "gs://dataflow-samples/shakespeare/kinglear.txt"
+		output    = "${google_storage_bucket.temp.url}/output"
+	}
+	zone = "us-central1-f"
+	project = "%s"
+	service_account_email = "${google_service_account.dataflow-sa.email}"
+
+	on_delete = "cancel"
+}`, acctest.RandString(10), acctest.RandString(10), getTestProjectFromEnv())

website/docs/r/dataflow_job.html.markdown

@@ -49,6 +49,7 @@ The following arguments are supported:
 * `on_delete` - (Optional) One of "drain" or "cancel".  Specifies behavior of deletion during `terraform destroy`.  See above note.
 * `project` - (Optional) The project in which the resource belongs. If it is not provided, the provider project is used.
 * `zone` - (Optional) The zone in which the created job should run. If it is not provided, the provider zone is used.
+* `service_account_email` - (Optional) The Service Account email used to create the job.
 
 ## Attributes Reference