respawn-group

respawn-group

Manage a group of respawn monitors

npm install respawn-group

Usage

var regroup = require('respawn-group');
var group = regroup();

group.add('test', ['node', 'server.js']);
group.start('test');

API

• regroup(defaults) -> group Instantiate a new respawn group. All opts will inherit from defaults

• group.add(id, command, opts) -> mon Add a new respawn monitor. See respawn for more information. If you add a new monitor with the same id as an old one it will be used when the old monitor stops.

• group.remove(id, cb) Remove a monitor

• group.start(id) -> mon Start a monitor

• group.stop(id, cb) Stop a monitor

• group.restart(id) -> mon Gracefully restart a monitor

• group.get(id) -> mon Get a monitor

• group.has(id) -> bool True is group has monitor

• group.list() -> array List all monitors

• group.shutdown(cb) Stop all services and ignore all following starts

Events

• group.on('start', mon) Monitor has started. mon.id contains the id of the monitor

• group.on('stop', mon) Monitor is fully stopped

• group.on('crash', mon) Monitor has crashed

• group.on('restart', mon) Monitor is being restarted

• group.on('sleep', mon) Monitor is sleeping

• group.on('spawn', mon, process) Monitor has spawned a child process

• group.on('exit', mon, code, signal) Monitors child process has exited

• group.on('stdout', mon, data) child process stdout has emitted data

• group.on('stderr', mon, data) child process stderr has emitted data

• group.on('warn', mon, err) Monitor has a warning

• group.on('finalize', mon) A monitor is fully stopped and being garbage collected. Happens if you call remove or updates a monitor

Updating existing monitors

To update an existing monitor simply add it again with the same id

group.add('test', ['node', 'server.js']);

// ... wait a bit ...
// now lets update test

group.add('test', ['node', 'server2.js']);
group.restart('test'); // you need to restart test for the new monitor to take over
                       // this will trigger a 'finalize' event for the old monitor

License

MIT