immortal example

spawn.js

var net = require('net');
var immortal = require('immortal');

var spawn = function(id, callback) {
  var socket = net.connect('/tmp/monitor.sock');

  console.log(id, 'start');
  socket.on('error', function(error) {
    if (error.code !== 'ENOENT') throw error;

    immortal.start(__dirname+'/worker.js', {
      strategy: 'unattached',
      auto:false,
      monitor: null
    }, function(error) {
      if (error) throw error;

      console.log('immortal process spawned');

      // error === null
      // Der er derfor ingen grund til at lave et respawn
      // Desuden er der kun når forkerte options er givet i immortal.start(name, options) at
      // error ikke vil være null.
      //setTimeout(spawn.bind(null, id, callback), 100);
    });

  });

  socket.on('connect', function() {
         console.log(id, 'connect');
         callback(null, socket);
  });
};

for (var i = 0 ; i < 5; i++) {
  spawn(i, function() {
    console.log('spawned...');
  });
}

worker.js

var net = require('net');
var server = net.createServer(function(socket) {
  // do some stuff
});

server.on('error', function() {
  process.exit(0); // only listen in one of the daemons
});

server.listen('/tmp/monitor.sock');