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Google Cloud Platform logo

Google Cloud Pub/Sub Node.js Samples

Build

Cloud Pub/Sub is a fully-managed real-time messaging service that allows you to send and receive messages between independent applications.

Table of Contents

Setup

  1. Read Prerequisites and How to run a sample first.

  2. Install dependencies:

    With npm:

    npm install
    

    With yarn:

    yarn install
    

Samples

Topics

View the documentation or the source code.

Usage: node topics.js --help

Commands:
  list                                   Lists all topics in the current project.
  create <topicName>                     Creates a new topic.
  delete <topicName>                     Deletes a topic.
  publish <topicName> <message>          Publishes a message to a topic.
  publish-ordered <topicName> <message>  Publishes an ordered message to a topic.
  get-policy <topicName>                 Gets the IAM policy for a topic.
  set-policy <topicName>                 Sets the IAM policy for a topic.
  test-permissions <topicName>           Tests the permissions for a topic.

Options:
  --help  Show help                                                                                            [boolean]

Examples:
  node topics.js list
  node topics.js create my-topic
  node topics.js delete my-topic
  node topics.js publish my-topic "Hello, world!"
  node topics.js publish my-topic '{"data":"Hello, world!"}'
  node topics.js get-policy greetings
  node topics.js set-policy greetings
  node topics.js test-permissions greetings

For more information, see https://cloud.google.com/pubsub/docs

Subscriptions

View the documentation or the source code.

Usage: node subscriptions.js --help

Commands:
  list [topicName]                            Lists all subscriptions in the current project, optionally filtering by a
                                              topic.
  create <topicName> <subscriptionName>       Creates a new subscription.
  create-push <topicName> <subscriptionName>  Creates a new push subscription.
  delete <subscriptionName>                   Deletes a subscription.
  get <subscriptionName>                      Gets the metadata for a subscription.
  listen <subscriptionName>                   Listens to messages for a subscription.
  get-policy <subscriptionName>               Gets the IAM policy for a subscription.
  set-policy <subscriptionName>               Sets the IAM policy for a subscription.
  test-permissions <subscriptionName>         Tests the permissions for a subscription.

Options:
  --help  Show help                                                                                            [boolean]

Examples:
  node subscriptions.js list
  node subscriptions.js list my-topic
  node subscriptions.js create my-topic worker-1
  node subscriptions.js create-push my-topic worker-1
  node subscriptions.js get worker-1
  node subscriptions.js delete worker-1
  node subscriptions.js pull worker-1
  node subscriptions.js get-policy worker-1
  node subscriptions.js set-policy worker-1
  node subscriptions.js test-permissions worker-1

For more information, see https://cloud.google.com/pubsub/docs

Running the tests

  1. Set the GCLOUD_PROJECT and GOOGLE_APPLICATION_CREDENTIALS environment variables.

  2. Run the tests:

    With npm:

    npm test
    

    With yarn:

    yarn test