Process Messenger

Simple wrapper that child_process's messaging node.js

Documentation

ProcessaMessenger([process])

• process process object. Generally this is result forchild_process.fork.

Object for process messaging

Constructor get target process object.

In parent process:

var ProcessMessanger = require("process-messenger")
var fork = require("child_process").fork
var child = fork("./sample/child.js")
var pm = new ProcessMessanger(child)

And child process

var ProcessMessanger = require("process-messenger")
var pm = new ProcessMessanger()

ProcessMessenger.send(command, [args], [callback])

Send message to target process.

• command - string.
• args - Object. must serializable.
• callback - Function

pm.send("ping", function(result){
  console.log("result:"+result);
})

If you want parameters. set args

pm.send("add",{a: 1, b: 2} function(result){
  console.log("result:"+result);
})

If you not use callback, can omit callback,

pm.send("kill")

ProcessMessenger.on(command, callback)

Hook event that recive same command's message sending.

• command - string. Fire when that is same as other ProcessMessenger.send
• callback - Fucntion(args, done). args is set ProcessMessenger.send's args. default undefined. If you want return to sending process, call done(result).

pm.on("add", function(args, done){
  done(args.a + args.b)
})

ProcessMessenger.once(command, callback)

Recive message at once. (Basically behabor is same as ProcessMessenger.on)