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node_modules/google-gax/lib/auth.js

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+/*
+ *
+ * Copyright 2016, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+'use strict';
+
+/**
+ * @callback GetCredentialsFunc
+ *
+ * To authorize requests through gRPC, we must get the raw google-auth-library
+ * auth client object.
+ *
+ * @param {function()} callback - The callback function.
+ * @param {Object} opts - options values for configuring auth
+ * @param {(String|String[])} opts.scopes - the scope or scopes to use when
+ *   obtaining the credentials.
+ * @param {Object} opts.sslCreds - when specified, this is used instead
+ *   of default credentials.
+ */
+
+/**
+ * Creates a promise which resolves a auth credential.
+ *
+ * @param {GetCredentialsFunc} getCredentials - the callback used to
+ *   obtain the credentials.
+ * @param {Object} opts - the optional arguments to be passed to
+ *   getCredentials.
+ * @return {Promise} A promise which resolves to the credential.
+ */
+exports.createCredPromise = function createCredPromise(getCredentials, opts) {
+  return new Promise(function(resolve, reject) {
+    getCredentials(function(err, credentials) {
+      if (err) {
+        reject(err);
+      } else {
+        resolve(credentials);
+      }
+    }, opts);
+  });
+};