Add support for using labels on compute_instance

Author: selmanj

google/resource_compute_instance.go

@@ -343,6 +343,18 @@ func resourceComputeInstance() *schema.Resource {
 				Computed: true,
 			},
 
+			"labels": &schema.Schema{
+				Type:     schema.TypeMap,
+				Optional: true,
+				Elem:     &schema.Schema{Type: schema.TypeString},
+				Set:      schema.HashString,
+			},
+
+			"label_fingerprint": &schema.Schema{
+				Type:     schema.TypeString,
+				Computed: true,
+			},
+
 			"create_timeout": &schema.Schema{
 				Type:     schema.TypeInt,
 				Optional: true,
@@ -676,6 +688,7 @@ func resourceComputeInstanceCreate(d *schema.ResourceData, meta interface{}) err
 		Name:              d.Get("name").(string),
 		NetworkInterfaces: networkInterfaces,
 		Tags:              resourceInstanceTags(d),
+		Labels:            resourceInstanceLabels(d),
 		ServiceAccounts:   serviceAccounts,
 		Scheduling:        scheduling,
 	}
@@ -845,6 +858,14 @@ func resourceComputeInstanceRead(d *schema.ResourceData, meta interface{}) error
 		d.Set("tags_fingerprint", instance.Tags.Fingerprint)
 	}
 
+	if len(instance.Labels) > 0 {
+		d.Set("labels", instance.Labels)
+	}
+
+	if instance.LabelFingerprint != "" {
+		d.Set("label_fingerprint", instance.LabelFingerprint)
+	}
+
 	disksCount := d.Get("disk.#").(int)
 	attachedDisksCount := d.Get("attached_disk.#").(int)
 	disks := make([]map[string]interface{}, 0, disksCount)
@@ -977,6 +998,24 @@ func resourceComputeInstanceUpdate(d *schema.ResourceData, meta interface{}) err
 		d.SetPartial("tags")
 	}
 
+	if d.HasChange("labels") {
+		labels := resourceInstanceLabels(d)
+		labelFingerprint := d.Get("label_fingerprint").(string)
+		req := compute.InstancesSetLabelsRequest{Labels: labels, LabelFingerprint: labelFingerprint}
+
+		op, err := config.clientCompute.Instances.SetLabels(project, zone, d.Id(), &req).Do()
+		if err != nil {
+			return fmt.Errorf("Error updating labels: %s", err)
+		}
+
+		opErr := computeOperationWaitZone(config, op, project, zone, "labels to update")
+		if opErr != nil {
+			return opErr
+		}
+
+		d.SetPartial("labels")
+	}
+
 	if d.HasChange("scheduling") {
 		prefix := "scheduling.0"
 		scheduling := &compute.Scheduling{}
@@ -1127,6 +1166,18 @@ func resourceInstanceMetadata(d *schema.ResourceData) (*compute.Metadata, error)
 	return m, nil
 }
 
+func resourceInstanceLabels(d *schema.ResourceData) map[string]string {
+	labels := map[string]string{}
+	if v, ok := d.GetOk("labels"); ok {
+		labelMap := v.(map[string]interface{})
+		for k, v := range labelMap {
+			vstr := v.(string)
+			labels[k] = vstr
+		}
+	}
+	return labels
+}
+
 func resourceInstanceTags(d *schema.ResourceData) *compute.Tags {
 	// Calculate the tags
 	var tags *compute.Tags

google/resource_compute_instance_test.go

@@ -51,6 +51,7 @@ func TestAccComputeInstance_basic1(t *testing.T) {
 					testAccCheckComputeInstanceExists(
 						"google_compute_instance.foobar", &instance),
 					testAccCheckComputeInstanceTag(&instance, "foo"),
+					testAccCheckComputeInstanceLabel(&instance, "my_key", "my_value"),
 					testAccCheckComputeInstanceMetadata(&instance, "foo", "bar"),
 					testAccCheckComputeInstanceMetadata(&instance, "baz", "qux"),
 					testAccCheckComputeInstanceDisk(&instance, instanceName, true, true),
@@ -385,6 +386,7 @@ func TestAccComputeInstance_update(t *testing.T) {
 						"google_compute_instance.foobar", &instance),
 					testAccCheckComputeInstanceMetadata(
 						&instance, "bar", "baz"),
+					testAccCheckComputeInstanceLabel(&instance, "only_me", "nothing_else"),
 					testAccCheckComputeInstanceTag(&instance, "baz"),
 					testAccCheckComputeInstanceAccessConfig(&instance),
 				),
@@ -795,6 +797,24 @@ func testAccCheckComputeInstanceTag(instance *compute.Instance, n string) resour
 	}
 }
 
+func testAccCheckComputeInstanceLabel(instance *compute.Instance, key string, value string) resource.TestCheckFunc {
+	return func(s *terraform.State) error {
+		if instance.Labels == nil {
+			return fmt.Errorf("no labels found on instance %s", instance.Name)
+		}
+
+		v, ok := instance.Labels[key]
+		if !ok {
+			return fmt.Errorf("No label found with key %s on instance %s", key, instance.Name)
+		}
+		if v != value {
+			return fmt.Errorf("Expected value '%s' but found value '%s' for label '%s' on instance %s", value, v, key, instance.Name)
+		}
+
+		return nil
+	}
+}
+
 func testAccCheckComputeInstanceServiceAccount(instance *compute.Instance, scope string) resource.TestCheckFunc {
 	return func(s *terraform.State) error {
 		if count := len(instance.ServiceAccounts); count != 1 {
@@ -919,6 +939,11 @@ resource "google_compute_instance" "foobar" {
 	create_timeout = 5
 
 	metadata_startup_script = "echo Hello"
+
+	labels {
+		my_key       = "my_value"
+		my_other_key = "my_other_value"
+    }
 }
 `, instance)
 }
@@ -1050,10 +1075,11 @@ resource "google_compute_instance" "foobar" {
 func testAccComputeInstance_update(instance string) string {
 	return fmt.Sprintf(`
 resource "google_compute_instance" "foobar" {
-	name         = "%s"
-	machine_type = "n1-standard-1"
-	zone         = "us-central1-a"
-	tags         = ["baz"]
+	name           = "%s"
+	machine_type   = "n1-standard-1"
+	zone           = "us-central1-a"
+	can_ip_forward = false
+	tags           = ["baz"]
 
 	disk {
 		image = "debian-8-jessie-v20160803"
@@ -1067,6 +1093,14 @@ resource "google_compute_instance" "foobar" {
 	metadata {
 		bar = "baz"
 	}
+
+	create_timeout = 5
+
+	metadata_startup_script = "echo Hello"
+
+	labels {
+		only_me = "nothing_else"
+	}
 }
 `, instance)
 }

website/docs/r/compute_instance.html.markdown

@@ -46,6 +46,7 @@ resource "google_compute_instance" "default" {
     foo = "bar"
   }
 
+
   metadata_startup_script = "echo hi > /test.txt"
 
   service_account {
@@ -102,6 +103,8 @@ The following arguments are supported:
 
 * `tags` - (Optional) A list of tags to attach to the instance.
 
+* `labels` - (Optional) A set of key/value label pairs to assign to the instance.
+
 * `create_timeout` - (Optional) Configurable timeout in minutes for creating instances. Default is 4 minutes.
     Changing this forces a new resource to be created.
 
@@ -208,6 +211,8 @@ exported:
 
 * `tags_fingerprint` - The unique fingerprint of the tags.
 
+* `label_fingerprint` - The unique fingerprint of the labels.
+
 * `network_interface.0.address` - The internal ip address of the instance, either manually or dynamically assigned.
 
 * `network_interface.0.access_config.0.assigned_nat_ip` - If the instance has an access config, either the given external ip (in the `nat_ip` field) or the ephemeral (generated) ip (if you didn't provide one).