Kurunt Launch

launch.js

//
// Kurunt Launch
//
// Launches node.js apps through /etc/init.d/.
// Version: 0.1
// Author: Mark W. B. Ashcroft
//
// Copyright (c) 2013 Mark W. B. Ashcroft.
// Copyright (c) 2013 Kurunt.
//


var util        = require('util');
var exec        = require('child_process').exec;


var LOGGING     = 'quiet';
function _log(a,b){"debug"===LOGGING&&void 0!==b?console.log("debug - "+a+" > "+require("util").inspect(b,!0,99,!0)):"debug"===LOGGING&&void 0===b?console.log(a):"alert"===LOGGING&&console.log(a)};


// expose.
exports.launch  = launch;
exports.run     = run;



function launch(app, action) {
  
  _log('*' + app);
  
  // use exec (small resturns) over spawn (large binary resturns), see: http://www.hacksparrow.com/difference-between-spawn-and-exec-of-node-js-child_process.html
  var child = exec('/etc/init.d/' + app + ' ' + action,
    function (error, stdout, stderr) {
    if (error !== null) {
      console.log('error> ' + error);
    }
    if (stderr !== '') {
      console.log('stderr> ' + stderr);
    } 
    _log('res> ' + stdout);
  });
}



function run(cmd, cb) {
  
  _log('*' + cmd);
  
  // use exec (small resturns) over spawn (large binary resturns), see: http://www.hacksparrow.com/difference-between-spawn-and-exec-of-node-js-child_process.html
  // added cwd option which sets the directory for the exec to start from, am using root for flexibility in config['path'] as option. 
  var child = exec(cmd, { cwd: "/" }, function (error, stdout, stderr) {
    if (error !== null) {
      console.log('error '+(cmd)+'> ' + error);
    }
    if (stderr !== '') {
      console.log('stderr '+(cmd)+'> ' + stderr);
    } 
    _log('res '+(cmd)+'> ' + stdout);
    cb();
  });
}