..

backend/node_modules/google-auth-library/lib/auth/computeclient.js

@@ -0,0 +1,120 @@
+/**
+ * Copyright 2013 Google Inc. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+"use strict";
+var __extends = (this && this.__extends) || (function () {
+    var extendStatics = Object.setPrototypeOf ||
+        ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
+        function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
+    return function (d, b) {
+        extendStatics(d, b);
+        function __() { this.constructor = d; }
+        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
+    };
+})();
+Object.defineProperty(exports, "__esModule", { value: true });
+var oauth2client_1 = require("./oauth2client");
+var Compute = (function (_super) {
+    __extends(Compute, _super);
+    /**
+     * Google Compute Engine service account credentials.
+     *
+     * Retrieve access token from the metadata server.
+     * See: https://developers.google.com/compute/docs/authentication
+     */
+    function Compute() {
+        var _this = _super.call(this) || this;
+        // Start with an expired refresh token, which will automatically be
+        // refreshed before the first API call is made.
+        _this.credentials = { expiry_date: 1, refresh_token: 'compute-placeholder' };
+        return _this;
+    }
+    /**
+     * Indicates whether the credential requires scopes to be created by calling
+     * createdScoped before use.
+     * @return {object} The cloned instance.
+     */
+    Compute.prototype.createScopedRequired = function () {
+        // On compute engine, scopes are specified at the compute instance's
+        // creation time, and cannot be changed. For this reason, always return
+        // false.
+        return false;
+    };
+    /**
+     * Refreshes the access token.
+     * @param {object=} ignored_
+     * @param {function=} callback Optional callback.
+     */
+    Compute.prototype.refreshToken = function (ignored, callback) {
+        var uri = this._opts.tokenUrl || Compute._GOOGLE_OAUTH2_TOKEN_URL;
+        // request for new token
+        return this.transporter.request({ method: 'GET', uri: uri, json: true }, function (err, body, response) {
+            var token = body;
+            if (!err && token && token.expires_in) {
+                token.expiry_date =
+                    ((new Date()).getTime() + (token.expires_in * 1000));
+                delete token.expires_in;
+            }
+            if (callback) {
+                callback(err, token, response);
+            }
+        });
+    };
+    /**
+     * Inserts a helpful error message guiding the user toward fixing common auth
+     * issues.
+     * @param {object} err Error result.
+     * @param {object} result The result.
+     * @param {object} response The HTTP response.
+     * @param {Function} callback The callback.
+     */
+    Compute.prototype.postRequest = function (err, result, response, callback) {
+        if (response && response.statusCode) {
+            var helpfulMessage = null;
+            if (response.statusCode === 403) {
+                helpfulMessage =
+                    'A Forbidden error was returned while attempting to retrieve an access ' +
+                        'token for the Compute Engine built-in service account. This may be because the Compute ' +
+                        'Engine instance does not have the correct permission scopes specified.';
+            }
+            else if (response.statusCode === 404) {
+                helpfulMessage =
+                    'A Not Found error was returned while attempting to retrieve an access' +
+                        'token for the Compute Engine built-in service account. This may be because the Compute ' +
+                        'Engine instance does not have any permission scopes specified.';
+            }
+            if (helpfulMessage) {
+                if (err && err.message) {
+                    helpfulMessage += ' ' + err.message;
+                }
+                if (err) {
+                    err.message = helpfulMessage;
+                }
+                else {
+                    err = new Error(helpfulMessage);
+                    err.code = response.statusCode;
+                }
+            }
+        }
+        callback(err, result, response);
+    };
+    return Compute;
+}(oauth2client_1.OAuth2Client));
+/**
+ * Google Compute Engine metadata server token endpoint.
+ */
+Compute._GOOGLE_OAUTH2_TOKEN_URL = 'http://metadata.google.internal/computeMetadata/v1beta1/instance/service-accounts/default/token';
+exports.Compute = Compute;
+//# sourceMappingURL=computeclient.js.map