feat: support apiEndpoint override in client constructor

src/v1/datastore_client.js

@@ -62,12 +62,15 @@ class DatastoreClient {
   constructor(opts) {
     this._descriptors = {};
 
+    const servicePath =
+      opts.servicePath || opts.apiEndpoint || this.constructor.servicePath;
+
     // Ensure that options include the service address and port.
     opts = Object.assign(
       {
         clientConfig: {},
         port: this.constructor.port,
-        servicePath: this.constructor.servicePath,
+        servicePath,
       },
       opts
     );
@@ -154,6 +157,14 @@ class DatastoreClient {
     return 'datastore.googleapis.com';
   }
 
+  /**
+   * The DNS address for this API service - same as servicePath(),
+   * exists for compatibility reasons.
+   */
+  static get apiEndpoint() {
+    return 'datastore.googleapis.com';
+  }
+
   /**
    * The port for this API service.
    */

synth.metadata

@@ -1,19 +1,19 @@
 {
-  "updateTime": "2019-05-22T11:11:48.365770Z",
+  "updateTime": "2019-06-04T19:30:55.849433Z",
   "sources": [
     {
       "generator": {
         "name": "artman",
-        "version": "0.20.0",
-        "dockerImage": "googleapis/artman@sha256:3246adac900f4bdbd62920e80de2e5877380e44036b3feae13667ec255ebf5ec"
+        "version": "0.23.0",
+        "dockerImage": "googleapis/artman@sha256:846102ebf7ea2239162deea69f64940443b4147f7c2e68d64b332416f74211ba"
       }
     },
     {
       "git": {
         "name": "googleapis",
         "remote": "https://github.com/googleapis/googleapis.git",
-        "sha": "6ea045ad2ed95863557b9856760fa8760d8daee0",
-        "internalRef": "249345152"
+        "sha": "0026f4b890ed9e2388fb0573c0727defa6f5b82e",
+        "internalRef": "251265049"
       }
     },
     {

test/gapic-v1.js

@@ -23,6 +23,22 @@ const error = new Error();
 error.code = FAKE_STATUS_CODE;
 
 describe('DatastoreClient', () => {
+  it('has servicePath', () => {
+    const servicePath = datastoreModule.v1.DatastoreClient.servicePath;
+    assert(servicePath);
+  });
+
+  it('has apiEndpoint', () => {
+    const apiEndpoint = datastoreModule.v1.DatastoreClient.apiEndpoint;
+    assert(apiEndpoint);
+  });
+
+  it('has port', () => {
+    const port = datastoreModule.v1.DatastoreClient.port;
+    assert(port);
+    assert(typeof port === 'number');
+  });
+
   describe('lookup', () => {
     it('invokes lookup without error', done => {
       const client = new datastoreModule.v1.DatastoreClient({