the-shepherd/lib/shepherd.js

Control a herd of wild processes.

// Generated by CoffeeScript 1.8.0
(function() {
  var $, Fs, Helpers, Herd, Opts, Server, Worker, d, die, err, log, outStr, _ref,
    __slice = [].slice;

  Opts = require('./opts');

  if (Opts.daemon) {
    require('daemon')({
      stdout: process.stdout,
      stderr: process.stderr
    });
  }

  $ = require("bling");

  Fs = require("fs");

  log = $.logger("[shepherd]");

  die = function() {
    var a;
    a = 1 <= arguments.length ? __slice.call(arguments, 0) : [];
    log.apply(null, a);
    return process.exit(1);
  };

  if (Opts.O === "-") {
    try {
      outStr = process.stdout;
    } catch (_error) {
      err = _error;
      die("Failed to open stdout:", err.stack);
    }
  } else {
    try {
      outStr = Fs.createWriteStream(Opts.O, {
        flags: 'a',
        mode: 0x1b6,
        encoding: 'utf8'
      });
    } catch (_error) {
      err = _error;
      die("Failed to open output stream:", err.stack);
    }
  }

  $.log.out = function() {
    var a;
    a = 1 <= arguments.length ? __slice.call(arguments, 0) : [];
    try {
      return outStr.write(a.map($.toString).join(' ') + "\n", 'utf8');
    } catch (_error) {
      err = _error;
      return die("Failed to write to log:", err.stack);
    }
  };

  Helpers = require('./helpers');

  Herd = require('./herd');

  if (Opts.example) {
    d = Herd.defaults();
    _ref = require("./child"), Server = _ref.Server, Worker = _ref.Worker;
    d.servers.push(Server.defaults());
    d.workers.push(Worker.defaults());
    console.log(JSON.stringify(d, null, '  '));
    process.exit(0);
  }

  if (Opts.P && Opts.daemon) {
    Fs.writeFileSync(Opts.P, String(process.pid));
  }

  Helpers.readJson(Opts.F).wait(function(err, config) {
    if (err) {
      die("Failed to open herd file:", Opts.F, err.stack);
    }
    log("Starting new herd, shepherd PID: " + process.pid);
    return new Herd(config).start().wait(function(err) {
      var _ref1;
      if (err) {
        return die("Failed to start herd:", (_ref1 = err.stack) != null ? _ref1 : err);
      }
    });
  });

}).call(this);