bull/lib/state.js

Job manager

/**
	State machine.

	Distributed state machine.
*/

var machine = Machine('signup', opts); // opts -> redis connection mostly, name of the machine.

machine.state('send mail', function(data, next){
	// In this state we send an email with a confirmation link and exit the state
	next('wait confirmation', data);
});

machine.state('wait confirmation'); // // In this state we do nothing we just wait for an external input

machine.state('confirm user', function(task){
	return data;
})

machine.next('wait confirmation', data);

/**
	queue('wait confirmation').add(data);
*/
machine.state('transcode video', function(data){
	// transcode...
	this.next('append moov');
}).catch(function(err){
	this.next('delete tmp');
});

machine.state('append moov', input, function(data, next){
	// Append MOOV etc.
	this.next('delete tmp');
});

machine.next('delete temp', input, function(data, next){
	// delete temp file
	this.next('update user account');
});

machine.state('update user account', function(data, next){
	// update database
});