crony

crony

Node.js library for implementing supervisord event listeners.

Requires Node.js 6+

What?

supervisord implements an event API for listening to changes in state for the processes it manages. crony is an EventEmitter that lets us do stuff with those events in JavaScript.

Usage

const crony = require('crony');

crony.on( 'event', ev => {
  // Global event handler

  // token set for the event headers
  console.log(`Headers: ${ ev.headers }`);

  // token set for the event payload
  console.log(`Payload: ${ ev.payload }`);

  // If there was an event body, we pass that along, otherwise its undefined
  console.log(`Body: ${ ev.body }`);

  // We also preserve the raw event string
  console.log(`Raw: ${ ev.raw }`);
});

// Additionally, we can also listen to specific events
crony.on( 'PROCESS_STATE_RUNNING', ev => {
  // ...
});

// Start listening for events
crony.listen();

Development

# Install dependencies
nvm install
npm install

# Run the linter and tests
npm test