feat(samples): add sample code for ListAssets v1p5beta1 (#355)

asset/snippets/listAssets.js

@@ -0,0 +1,58 @@
+// Copyright 2020 Google LLC
+//
+// 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';
+
+// sample-metadata:
+//   title: List Assets
+//   description: List assets under the current project.
+//   usage: node listAssets <ASSET_TYPES>
+//   example: node listAssets "storage.googleapis.com/Bucket,bigquery.googleapis.com/Table"
+
+async function main(assetTypes) {
+  // [START asset_quickstart_list_assets]
+  const util = require('util');
+  const {v1p5beta1} = require('@google-cloud/asset');
+  const client = new v1p5beta1.AssetServiceClient();
+
+  const projectId = await client.getProjectId();
+  const projectResource = `projects/${projectId}`;
+  // TODO(developer): Choose types of assets to list, such as 'storage.googleapis.com/Bucket':
+  //   const assetTypes = 'storage.googleapis.com/Bucket,bigquery.googleapis.com/Table';
+  // Or simply use empty string to list all types of assets:
+  //   const assetTypes = '';
+  const assetTypesList = assetTypes ? assetTypes.split(',') : [];
+
+  async function listAssets() {
+    const request = {
+      parent: projectResource,
+      assetTypes: assetTypesList,
+      contentType: 'RESOURCE',
+      // (Optional) Add readTime parameter to list assets at the given time instead of current time:
+      //   readTime: { seconds: 1593988758 },
+    };
+
+    // Call cloud.assets.v1p5beta1.ListAssets API.
+    const result = await client.listAssets(request);
+    // Handle the response.
+    console.log(util.inspect(result, {depth: null}));
+  }
+  listAssets();
+  // [END asset_quickstart_list_assets]
+}
+
+main(...process.argv.slice(2)).catch(err => {
+  console.error(err.message);
+  process.exitCode = 1;
+});