Add basic auth samples.

Author: jmdobry

auth/auth.js

@@ -0,0 +1,103 @@
+/**
+ * Copyright 2017, Google, Inc.
+ * 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.
+ */
+
+/**
+ * Demonstrates how to authenticate to Google Cloud Platform APIs using the
+ * Google Cloud Client Libraries.
+ */
+
+'use strict';
+
+function authCloudImplicit () {
+  // [START auth_cloud_implicit]
+  // Imports the Google Cloud client library.
+  const Storage = require('@google-cloud/storage');
+
+  // Instantiates a client. If you don't specify credentials when constructing
+  // the client, the client library will look for credentials in the
+  // environment.
+  const storage = Storage();
+
+  // Makes an authenticated API request.
+  storage
+    .getBuckets()
+    .then((results) => {
+      const buckets = results[0];
+
+      console.log('Buckets:');
+      buckets.forEach((bucket) => {
+        console.log(bucket.name);
+      });
+    })
+    .catch((err) => {
+      console.error('ERROR:', err);
+    });
+  // [END auth_cloud_implicit]
+}
+
+function authCloudExplicit () {
+  // [START auth_cloud_explicit]
+  // Imports the Google Cloud client library.
+  const Storage = require('@google-cloud/storage');
+
+  // Instantiates a client. Explicitly use service account credentials by
+  // specifying the private key file. All clients in google-cloud-node have this
+  // helper, see https://googlecloudplatform.github.io/google-cloud-node/#/docs/google-cloud/latest/guides/authentication
+  const storage = Storage({
+    keyFilename: '/path/to/keyfile.json'
+  });
+
+  // Makes an authenticated API request.
+  storage
+    .getBuckets()
+    .then((results) => {
+      const buckets = results[0];
+
+      console.log('Buckets:');
+      buckets.forEach((bucket) => {
+        console.log(bucket.name);
+      });
+    })
+    .catch((err) => {
+      console.error('ERROR:', err);
+    });
+  // [END auth_cloud_explicit]
+}
+
+const cli = require(`yargs`)
+  .demand(1)
+  .command(
+    `auth-cloud-implicit`,
+    `Loads credentials implicitly.`,
+    {},
+    authCloudImplicit
+  )
+  .command(
+    `auth-cloud-explicit`,
+    `Loads credentials implicitly.`,
+    {},
+    authCloudExplicit
+  )
+  .example(`node $0 implicit`, `Loads credentials implicitly.`)
+  .example(`node $0 explicit`, `Loads credentials explicitly.`)
+  .wrap(120)
+  .recommendCommands()
+  .epilogue(`For more information, see https://cloud.google.com/docs/authentication`)
+  .help()
+  .strict();
+
+if (module === require.main) {
+  cli.parse(process.argv.slice(2));
+}

auth/package.json

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+{
+  "name": "nodejs-docs-samples-auth",
+  "version": "0.0.1",
+  "private": true,
+  "license": "Apache-2.0",
+  "author": "Google Inc.",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/GoogleCloudPlatform/nodejs-docs-samples.git"
+  },
+  "engines": {
+    "node": ">=4.3.2"
+  },
+  "scripts": {
+    "lint": "samples lint",
+    "pretest": "npm run lint",
+    "system-test": "ava -T 20s --verbose system-test/*.test.js",
+    "test": "npm run system-test"
+  },
+  "dependencies": {
+    "@google-cloud/storage": "1.1.1",
+    "yargs": "8.0.2"
+  },
+  "devDependencies": {
+    "@google-cloud/nodejs-repo-tools": "1.4.15",
+    "ava": "0.19.1"
+  },
+  "cloud-repo-tools": {
+    "requiresKeyFile": true,
+    "requiresProjectId": true
+  }
+}

auth/system-test/auth.test.js

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+/**
+ * Copyright 2017, Google, Inc.
+ * 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';
+
+const path = require(`path`);
+const test = require(`ava`);
+const tools = require(`@google-cloud/nodejs-repo-tools`);
+
+const cwd = path.join(__dirname, `..`);
+const cmd = `node auth.js`;
+
+test.before(tools.checkCredentials);
+
+test.serial(`should load credentials implicitly`, async (t) => {
+  const output = await tools.runAsync(`${cmd} auth-cloud-implicit`, cwd);
+  t.is(output.includes(`Buckets:`), true);
+});
+
+test.serial(`should load credentials explicitly`, async (t) => {
+  const output = await tools.runAsync(`${cmd} auth-cloud-explicit`, cwd);
+  t.is(!!output, false);
+});