cl-spawner

cl-spawner helps you with that:

• manage child processes

  you can know which processes you spawned, and you can kill them all at one time.

• promisified spawn.

var spawn = function(cmd, params, cmdOpts, options) { ... }

eg:

var Spawner = require('cl-spawner');

var spawner = Spawner();

// spawn child process

spawner.spawn('ls', ['../']);

@param cmd, params and cmdOpts

just see node spawn api.

@param options

options = { stdout, stderr, proc }

• stdout

You can set a function to stdout or null.

When stdout is function, it accepts stdout data from child process.

• stderr

You can set a function to stderr or null.

When stderr is function, it accepts stderr data from child process.

• proc

You can set a function to proc or null.

When proc is function, it accepts child process.

eg:

var Spawner = require('cl-spawner');

var spawner = Spawner();

spawner.spawn('echo', ['hello'], {}, {
    stdout: function(data) {
        console.log('stdout:' + data);
    },
    stderr: function(data) {
        console.log('stderr:' + data);
    },
    proc: function(p) {
        console.log(p.pid);
    }
});

@return

The return of spawn is a promise.

getChilds

eg:

var Spawner = require('cl-spawner');

var spawner = Spawner();

spawner.spawn('node'); // process 1, assume pid is 100

spawner.spawn('node'); // process 2, assume pid is 200

spawner.spawn('ls'); // process 3, assume pid is 300

console.log(spawner.getChilds()); // [100, 200]

killAll

return a promise.

eg:

var Spawner = require('cl-spawner');

var spawner = Spawner();

spawner.spawn('node'); // process 1, assume pid is 100

spawner.spawn('node'); // process 2, assume pid is 200

spawner.killAll().then(function(){
    console.log(spawner.getChilds()); // []
});