adds a x-goog-api-client header to existing API requests in this plugin to clearly identify API requests from this GKE plugin

Signed-off-by: armandocomellas1 <cgarmando@google.com>

.changeset/mighty-tomatoes-visit.md

@@ -1,5 +1,5 @@
 ---
-'@backstage/plugin-kubernetes-backend': minor
+'@backstage/plugin-kubernetes-backend': patch
 ---
 
-At Line 91, in the second parameter enter a value for the property `libName` and `libVersion` to post headers to the key `x-goog-api-client`
+adds a x-goog-api-client header to existing API requests in this plugin to clearly identify API requests from this GKE plugin. headers are formatted as follows where `libVersion` represents the current dotted version number of the Backstage GKE plugin and `libName` represent the current Google API used at backstage.

plugins/kubernetes-backend/src/cluster-locator/GkeClusterLocator.test.ts

@@ -18,9 +18,18 @@ import { ANNOTATION_KUBERNETES_AUTH_PROVIDER } from '@backstage/plugin-kubernete
 import '@backstage/backend-common';
 import { ConfigReader, Config } from '@backstage/config';
 import { GkeClusterLocator } from './GkeClusterLocator';
-import { Duration } from 'luxon';
+import * as container from '@google-cloud/container';
 
 const mockedListClusters = jest.fn();
+jest.mock('@google-cloud/container', () => {
+  return {
+    v1: {
+      ClusterManagerClient: jest.fn().mockImplementation(() => {
+        mockedListClusters();
+      }),
+    },
+  };
+});
 
 describe('GkeClusterLocator', () => {
   beforeEach(() => {
@@ -486,20 +495,18 @@ describe('GkeClusterLocator', () => {
         },
       ]);
     });
-    it('Check if new container.v1.ClusterManagerClient has key and values as parameter', async () => {
+    it('constructs ClusterManagerClient with identifying metadata', async () => {
       const configs: Config = new ConfigReader({
         type: 'gke',
         projectId: 'some-project',
       });
 
-      const refreshIntervals: Duration | undefined = undefined;
-      const getHeaders: GkeClusterLocator = GkeClusterLocator.fromConfig(
-        configs,
-        refreshIntervals,
-      );
+      GkeClusterLocator.fromConfig(configs);
 
-      expect(getHeaders).toHaveProperty('client._opts.libName');
-      expect(getHeaders).toHaveProperty('client._opts.libVersion');
+      expect(container.v1.ClusterManagerClient).toHaveBeenCalledWith({
+        libName: 'backstage/kubernetes-backend.GkeClusterLocator',
+        libVersion: expect.any(String),
+      });
     });
   });
 });

plugins/kubernetes-backend/src/cluster-locator/GkeClusterLocator.ts

@@ -81,7 +81,7 @@ export class GkeClusterLocator implements KubernetesClustersSupplier {
     return gkeClusterLocator;
   }
 
-  // At Line 91, in the second parameter enter a value for the property libName and libVersion to post headers to the key 'x-goog-api-client'
+  // Added an `x-goog-api-client` header to API requests made by the GKE cluster locator to clearly identify API requests from this plugin.
   static fromConfig(
     config: Config,
     refreshInterval: Duration | undefined = undefined,
@@ -89,7 +89,7 @@ export class GkeClusterLocator implements KubernetesClustersSupplier {
     return GkeClusterLocator.fromConfigWithClient(
       config,
       new container.v1.ClusterManagerClient({
-        libName: 'backstage/gke',
+        libName: `backstage/kubernetes-backend.GkeClusterLocator`,
         libVersion: packageinfo.version,
       }),
       refreshInterval,