Virtual field for google_cloud_run_service revision names

.changelog/3306.txt

@@ -0,0 +1,3 @@
+```release-note:enhancement
+cloudrun: added ability to autogenerate revision name
+```

google/resource_cloud_run_service.go

@@ -25,6 +25,14 @@ import (
 	"google.golang.org/api/googleapi"
 )
 
+func revisionNameCustomizeDiff(diff *schema.ResourceDiff, v interface{}) error {
+	autogen := diff.Get("autogenerate_revision_name").(bool)
+	if autogen && diff.HasChange("template.0.metadata.0.name") {
+		return fmt.Errorf("google_cloud_run_service: `template.metadata.name` cannot be set while `autogenerate_revision_name` is true. Please remove the field or set `autogenerate_revision_name` to false.")
+	}
+	return nil
+}
+
 func resourceCloudRunService() *schema.Resource {
 	return &schema.Resource{
 		Create: resourceCloudRunServiceCreate,
@@ -42,6 +50,9 @@ func resourceCloudRunService() *schema.Resource {
 			Delete: schema.DefaultTimeout(4 * time.Minute),
 		},
 
+		SchemaVersion: 1,
+		CustomizeDiff: revisionNameCustomizeDiff,
+
 		Schema: map[string]*schema.Schema{
 			"location": {
 				Type:        schema.TypeString,
@@ -567,6 +578,11 @@ https://{route-hash}-{project-hash}-{cluster-level-suffix}.a.run.app`,
 					},
 				},
 			},
+			"autogenerate_revision_name": {
+				Type:     schema.TypeBool,
+				Optional: true,
+				Default:  false,
+			},
 			"project": {
 				Type:     schema.TypeString,
 				Optional: true,
@@ -693,6 +709,10 @@ func resourceCloudRunServiceRead(d *schema.ResourceData, meta interface{}) error
 		return nil
 	}
 
+	// Explicitly set virtual fields to default values if unset
+	if _, ok := d.GetOk("autogenerate_revision_name"); !ok {
+		d.Set("autogenerate_revision_name", false)
+	}
 	if err := d.Set("project", project); err != nil {
 		return fmt.Errorf("Error reading Service: %s", err)
 	}
@@ -809,6 +829,9 @@ func resourceCloudRunServiceImport(d *schema.ResourceData, meta interface{}) ([]
 	}
 	d.SetId(id)
 
+	// Explicitly set virtual fields to default values on import
+	d.Set("autogenerate_revision_name", false)
+
 	return []*schema.ResourceData{d}, nil
 }
 
@@ -1553,6 +1576,9 @@ func expandCloudRunServiceSpecTemplateMetadataAnnotations(v interface{}, d Terra
 }
 
 func expandCloudRunServiceSpecTemplateMetadataName(v interface{}, d TerraformResourceData, config *Config) (interface{}, error) {
+	if d.Get("autogenerate_revision_name") == true {
+		return nil, nil
+	}
 	return v, nil
 }
 

google/resource_cloud_run_service_generated_test.go

@@ -92,7 +92,7 @@ func TestAccCloudRunService_cloudRunServiceSqlExample(t *testing.T) {
 				ResourceName:            "google_cloud_run_service.default",
 				ImportState:             true,
 				ImportStateVerify:       true,
-				ImportStateVerifyIgnore: []string{"name", "location"},
+				ImportStateVerifyIgnore: []string{"name", "location", "autogenerate_revision_name"},
 			},
 		},
 	})
@@ -119,6 +119,7 @@ resource "google_cloud_run_service" "default" {
       }
     }
   }
+  autogenerate_revision_name = true
 }
 
 resource "google_sql_database_instance" "instance" {
@@ -211,7 +212,7 @@ func TestAccCloudRunService_cloudRunServiceMultipleEnvironmentVariablesExample(t
 				ResourceName:            "google_cloud_run_service.default",
 				ImportState:             true,
 				ImportStateVerify:       true,
-				ImportStateVerifyIgnore: []string{"name", "location"},
+				ImportStateVerifyIgnore: []string{"name", "location", "autogenerate_revision_name"},
 			},
 		},
 	})
@@ -243,6 +244,7 @@ resource "google_cloud_run_service" "default" {
     percent         = 100
     latest_revision = true
   }
+  autogenerate_revision_name = true
 }
 `, context)
 }

website/docs/r/cloud_run_service.html.markdown

@@ -99,6 +99,7 @@ resource "google_cloud_run_service" "default" {
       }
     }
   }
+  autogenerate_revision_name = true
 }
 
 resource "google_sql_database_instance" "instance" {
@@ -181,6 +182,7 @@ resource "google_cloud_run_service" "default" {
     percent         = 100
     latest_revision = true
   }
+  autogenerate_revision_name = true
 }
 ```
 
@@ -487,6 +489,11 @@ The `resources` block supports:
 * `project` - (Optional) The ID of the project in which the resource belongs.
     If it is not provided, the provider project is used.
 
+* `autogenerate_revision_name` - (Optional) If set to `true`, the revision name (template.metadata.name) will be omitted and 
+autogenerated by Cloud Run. This cannot be set to `true` while `template.metadata.name` 
+is also set. 
+(For legacy support, if `template.metadata.name` is unset in state while
+this field is set to false, the revision name will still autogenerate.)
 
 The `metadata` block supports: