feat: support apiEndpoint override

package.json

@@ -9,7 +9,7 @@
     "gcs-upload": "build/src/cli.js"
   },
   "scripts": {
-    "test": "nyc mocha build/test",
+    "test": "c8 mocha build/test",
     "lint": "gts check",
     "clean": "gts clean",
     "compile": "tsc -p .",
@@ -21,7 +21,7 @@
     "samples-test": "echo no samples 🤷‍♂️",
     "presystem-test": "npm run compile",
     "docs": "compodoc src/",
-    "docs-test": "linkinator docs -r --skip www.googleapis.com",
+    "docs-test": "linkinator docs -r",
     "predocs-test": "npm run docs"
   },
   "keywords": [
@@ -58,6 +58,7 @@
     "@types/node": "^10.3.0",
     "@types/pumpify": "^1.4.1",
     "assert-rejects": "^1.0.0",
+    "c8": "^5.0.1",
     "codecov": "^3.0.4",
     "gts": "^1.0.0",
     "intelli-espower-loader": "^1.0.1",
@@ -66,7 +67,6 @@
     "mocha": "^6.1.4",
     "mockery": "^2.1.0",
     "nock": "^10.0.0",
-    "nyc": "^14.0.0",
     "source-map-support": "^0.5.6",
     "typescript": "~3.5.0"
   }

src/index.ts

@@ -14,7 +14,6 @@ import * as Pumpify from 'pumpify';
 import {PassThrough, Transform} from 'stream';
 import * as streamEvents from 'stream-events';
 
-const BASE_URI = 'https://www.googleapis.com/upload/storage/v1/b';
 const TERMINATED_UPLOAD_STATUS_CODE = 410;
 const RESUMABLE_INCOMPLETE_STATUS_CODE = 308;
 const RETRY_LIMIT = 5;
@@ -31,6 +30,12 @@ export interface Encryption {
 }
 
 export interface UploadConfig {
+  /**
+   * The API endpoint used for the request.
+   * Defaults to `storage.googleapis.com`.
+   */
+  apiEndpoint?: string;
+
   /**
    * The name of the destination bucket.
    */
@@ -40,7 +45,12 @@ export interface UploadConfig {
    * The name of the destination file.
    */
   file: string;
+
+  /**
+   * The GoogleAuthOptions passed to google-auth-library
+   */
   authConfig?: GoogleAuthOptions;
+
   /**
    * If you want to re-use an auth client from google-auto-auth, pass an
    * instance here.
@@ -141,6 +151,7 @@ export interface ConfigMetadata {
 export class Upload extends Pumpify {
   bucket: string;
   file: string;
+  apiEndpoint: string;
   authConfig?: {scopes?: string[]};
   authClient: GoogleAuth;
   generation?: number;
@@ -169,6 +180,10 @@ export class Upload extends Pumpify {
   private bufferStream?: PassThrough;
   private offsetStream?: PassThrough;
 
+  private get baseURI() {
+    return `https://${this.apiEndpoint}/upload/storage/v1/b`;
+  }
+
   constructor(cfg: UploadConfig) {
     super();
     streamEvents(this);
@@ -185,6 +200,7 @@ export class Upload extends Pumpify {
     ];
     this.authClient = cfg.authClient || new GoogleAuth(cfg.authConfig);
 
+    this.apiEndpoint = cfg.apiEndpoint || 'storage.googleapis.com';
     this.bucket = cfg.bucket;
     this.file = cfg.file;
     this.generation = cfg.generation;
@@ -254,7 +270,7 @@ export class Upload extends Pumpify {
 
     const reqOpts: GaxiosOptions = {
       method: 'POST',
-      url: [BASE_URI, this.bucket, 'o'].join('/'),
+      url: [this.baseURI, this.bucket, 'o'].join('/'),
       params: {name: this.file, uploadType: 'resumable'},
       data: metadata,
       headers: {},

test/test.ts

@@ -71,6 +71,8 @@ describe('gcs-resumable-upload', () => {
   const ORIGIN = '*';
   const PREDEFINED_ACL = 'authenticatedRead';
   const USER_PROJECT = 'user-project-id';
+  const API_ENDPOINT = 'fake.googleapis.com';
+  const BASE_URI = `https://${API_ENDPOINT}/upload/storage/v1/b`;
   let REQ_OPTS: GaxiosOptions;
   const keyFile = path.join(__dirname, '../../test/fixtures/keys.json');
 
@@ -93,6 +95,7 @@ describe('gcs-resumable-upload', () => {
       predefinedAcl: PREDEFINED_ACL,
       userProject: USER_PROJECT,
       authConfig: {keyFile},
+      apiEndpoint: API_ENDPOINT,
     });
   });
 
@@ -121,6 +124,11 @@ describe('gcs-resumable-upload', () => {
       assert.strictEqual(up.generation, GENERATION);
     });
 
+    it('should localize the apiEndpoint', () => {
+      assert.strictEqual(up.apiEndpoint, API_ENDPOINT);
+      assert.strictEqual(up.baseURI, BASE_URI);
+    });
+
     it('should localize the KMS key name', () => {
       const kmsKeyName = 'kms-key-name';
       const up = upload({bucket: 'BUCKET', file: FILE, kmsKeyName});
@@ -257,10 +265,7 @@ describe('gcs-resumable-upload', () => {
     it('should make the correct request', done => {
       up.makeRequest = async (reqOpts: GaxiosOptions) => {
         assert.strictEqual(reqOpts.method, 'POST');
-        assert.strictEqual(
-          reqOpts.url,
-          `https://www.googleapis.com/upload/storage/v1/b/${BUCKET}/o`
-        );
+        assert.strictEqual(reqOpts.url, `${BASE_URI}/${BUCKET}/o`);
         assert.deepStrictEqual(reqOpts.params, {
           predefinedAcl: up.predefinedAcl,
           name: FILE,