fix(gcp-metadata): detect Cloud Run worker pools as serverless

core/packages/gcp-metadata/src/gcp-residency.ts

@@ -47,11 +47,15 @@ export function isGoogleCloudServerless(): boolean {
    * `K_SERVICE` is used in Cloud Run and newer Cloud Functions environments:
    * - See {@link https://cloud.google.com/run/docs/container-contract#env-vars Cloud Run environment variables}.
    * - See {@link https://cloud.google.com/functions/docs/env-var Cloud Functions newer runtimes}.
+   *
+   * `CLOUD_RUN_WORKER_POOL` is used for Cloud Run worker pools:
+   * - See {@link https://cloud.google.com/run/docs/container-contract#env-vars Cloud Run environment variables}.
    */
   const isGFEnvironment =
     process.env.CLOUD_RUN_JOB ||
     process.env.FUNCTION_NAME ||
-    process.env.K_SERVICE;
+    process.env.K_SERVICE ||
+    process.env.CLOUD_RUN_WORKER_POOL;
 
   return !!isGFEnvironment;
 }

core/packages/gcp-metadata/test/gcp-residency.test.ts

@@ -57,6 +57,12 @@ describe('gcp-residency', () => {
       assert(gcpResidency.isGoogleCloudServerless());
     });
 
+    it('should return `true` if `CLOUD_RUN_WORKER_POOL` env is set', () => {
+      process.env.CLOUD_RUN_WORKER_POOL = '1';
+
+      assert(gcpResidency.isGoogleCloudServerless());
+    });
+
     it('should return `false` if none of the envs are set', () => {
       assert.equal(gcpResidency.isGoogleCloudServerless(), false);
     });

core/packages/gcp-metadata/test/utils/gcp-residency.ts

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
 import {strict as assert} from 'assert';
 import fs from 'fs';
 import os from 'os';
 
@@ -27,12 +27,12 @@
    * Stubs used in this utility. These are used within the provided sandbox.
    * */
   stubs: {
     [key in
       | 'fsReadFileSync'
       | 'fsStatSync'
       | 'processEnv'
       | 'osNetworkInterfaces'
       | 'osPlatform']?: SinonStub | void;
   } = {};
 
   constructor(public sandbox: SinonSandbox) {}
@@ -109,6 +109,7 @@
     delete customEnv.CLOUD_RUN_JOB;
     delete customEnv.FUNCTION_NAME;
     delete customEnv.K_SERVICE;
+    delete customEnv.CLOUD_RUN_WORKER_POOL;
 
     this.stubs.processEnv ??= this.sandbox.stub(process, 'env');
     this.stubs.processEnv.value(customEnv);