[Asset] Add quickstart code for ExportAssets API

asset/quickstart.js

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+/**
+ * Copyright 2018, 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';
+
+// Imports the Google APIs client library
+async function exportAssets (dumpFilePath) {
+  // [START asset_quickstart_exportassets]
+  const asset = require('@google-cloud/asset');
+  var client = new asset.v1beta1.AssetServiceClient({
+    // optional auth parameters.
+  });
+
+  // Your Google Cloud Platform project ID
+  const projectId = process.env.GCLOUD_PROJECT;
+  var projectResource = client.projectPath(projectId);
+
+  // var dumpFilePath = 'Dump file path, e.g.: gs://<my_bucket>/<my_asset_file>'
+  var outputConfig = {
+    gcsDestination: {
+      uri: dumpFilePath
+    }
+  };
+  var request = {
+    parent: projectResource,
+    outputConfig: outputConfig
+  };
+
+  // Handle the operation using the promise pattern.
+  client.exportAssets(request).then(responses => {
+    var operation = responses[0];
+    // Operation#promise starts polling for the completion of the operation.
+    return operation.promise();
+  }).then(responses => {
+    // The final result of the operation.
+    var result = responses[0];
+    // The metadata value of the completed operation.
+    // var metadata = responses[1];
+    // The response of the api call returning the complete operation.
+    // var finalApiResponse = responses[2];
+    // Do things with with the response.
+    console.log(result);
+  })
+    .catch(err => {
+      console.error(err);
+    });
+  // [END asset_quickstart_exportassets]
+}
+
+const cli = require('yargs')
+  .demand(1)
+  .command(
+    `export-assets <dumpFilePath>`,
+    `Export asserts to specified dump file path.`,
+    {},
+    opts => exportAssets(opts.dumpFilePath)
+  )
+  .example(
+    `node $0 export-assets gs://my-bucket/my-assets.txt`,
+    `Export assets to gs://my-bucket/my-assets.txt.`
+  )
+  .wrap(10)
+  .recommendCommands()
+  .epilogue(`https://cloud.google.com/resource-manager/docs/cloud-asset-inventory/overview`)
+  .help()
+  .strict();
+
+if (module === require.main) {
+  cli.parse(process.argv.slice(1));
+}

asset/system-test/quickstart.test.js

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+/**
+ * Copyright 2018, 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 util = require(`util`);
+const uuid = require(`uuid`);
+const cwd = path.join(__dirname, `..`);
+const cmd = `node quickstart.js`;
+
+const {Storage} = require(`@google-cloud/storage`, {});
+
+const storage = new Storage();
+const bucketName = `asset-nodejs-${uuid.v4()}`;
+const bucket = storage.bucket(bucketName);
+
+test.before(tools.checkCredentials);
+test.before(async () => {
+  await bucket.create();
+});
+
+test.after.always(async () => {
+  try {
+    await bucket.delete();
+  } catch (err) {} // ignore error
+});
+
+test.beforeEach(tools.stubConsole);
+test.afterEach.always(tools.restoreConsole);
+
+test.serial(`should export assets to specified path`, async t => {
+  var dumpFilePath = util.format('gs://%s/my-assets.txt', bucketName);
+  await tools.runAsyncWithIO(
+    `${cmd} export-assets ${dumpFilePath}`,
+    cwd
+  );
+  const [exists] = await bucket.file();
+  t.true(exists);
+});