feat: add detection for Cloud Run Jobs (#2120)

Co-authored-by: Daniel Bloom <Daniel.Aaron.Bloom@gmail.com>

Author: Daniel-Aaron-Bloom

src/auth/envDetect.ts

@@ -20,6 +20,7 @@ export enum GCPEnv {
   CLOUD_FUNCTIONS = 'CLOUD_FUNCTIONS',
   COMPUTE_ENGINE = 'COMPUTE_ENGINE',
   CLOUD_RUN = 'CLOUD_RUN',
+  CLOUD_RUN_JOBS = 'CLOUD_RUN_JOBS',
   NONE = 'NONE',
 }
 
@@ -48,6 +49,8 @@ async function getEnvMemoized(): Promise<GCPEnv> {
       env = GCPEnv.KUBERNETES_ENGINE;
     } else if (isCloudRun()) {
       env = GCPEnv.CLOUD_RUN;
+    } else if (isCloudRunJob()) {
+      env = GCPEnv.CLOUD_RUN_JOBS;
     } else {
       env = GCPEnv.COMPUTE_ENGINE;
     }
@@ -74,6 +77,10 @@ function isCloudRun() {
   return !!process.env.K_CONFIGURATION;
 }
 
+function isCloudRunJob() {
+  return !!process.env.CLOUD_RUN_JOB;
+}
+
 async function isKubernetesEngine() {
   try {
     await gcpMetadata.instance('attributes/cluster-name');

test/test.googleauth.ts

@@ -1449,6 +1449,14 @@ describe('googleauth', () => {
       assert.strictEqual(env, envDetect.GCPEnv.CLOUD_RUN);
     });
 
+    it('should get the current environment if Cloud Run Jobs', async () => {
+      envDetect.clear();
+      mockEnvVar('CLOUD_RUN_JOB', 'KITTY');
+      const {auth} = mockGCE();
+      const env = await auth.getEnv();
+      assert.strictEqual(env, envDetect.GCPEnv.CLOUD_RUN_JOBS);
+    });
+
     it('should make the request via `#fetch`', async () => {
       const url = 'http://example.com';
       const {auth, scopes} = mockGCE();