// Copyright 2019-2020 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.

/**

* This application demonstrates how to perform basic operations on

* subscriptions with the Google Cloud Pub/Sub API.

*

* For more information, see the README.md under /pubsub and the documentation

* at https://cloud.google.com/pubsub/docs.

*/

'use strict';

// sample-metadata:

// title: List Subscriptions

// description: Lists all subscriptions in the current project.

// usage: node listSubscriptions.js

function main() {

// [START pubsub_list_subscriptions]

// Imports the Google Cloud client library

const {PubSub} = require('@google-cloud/pubsub');

// Creates a client; cache this for further use

const pubSubClient = new PubSub();

async function listSubscriptions() {

// Lists all subscriptions in the current project

const [subscriptions] = await pubSubClient.getSubscriptions();

console.log('Subscriptions:');

subscriptions.forEach(subscription => console.log(subscription.name));

}

listSubscriptions().catch(console.error);

// [END pubsub_list_subscriptions]

}

main(...process.argv.slice(2));