mecano/lib/daemonize.js

Common functions for system deployment.

// Generated by CoffeeScript 1.9.1
var fs, path, string;

module.exports = function(options, callback) {
  var cwd, destination, detach, do_destination, do_write;
  if (!options.destination) {
    throw Error("Required option 'destination'");
  }
  destination = options.destination;
  if (options.name == null) {
    options.name = path.basename(options.destination);
  }
  cwd = options.cwd;
  if (options.cwd === true) {
    cwd = 'cd $( dirname "${BASH_SOURCE}" )';
  }
  if (typeof cwd === 'string') {
    cwd = "cd \"" + cwd + "\"";
  }
  detach = options.detach;
  if (detach === true) {
    detach = ' &';
  }
  do_destination = function() {
    return fs.stat(options.ssh, destination, function(err, stat) {
      if (err) {
        return callback(err);
      }
      if (stat.isFile()) {
        return do_write();
      }
      destination = path.join(destination, "" + (string.underscore(options.name)));
      return do_write();
    });
  };
  do_write = function() {
    var err_file, out_file, pid_file;
    pid_file = options.pid_file;
    if (pid_file == null) {
      pid_file = "/var/run/" + (path.basename(destination)) + ".pid";
    }
    out_file = options.pid_file;
    if (out_file == null) {
      out_file = "/var/log/" + (path.basename(destination)) + "/" + (path.basename(destination)) + ".out";
    }
    err_file = options.pid_file;
    if (err_file == null) {
      err_file = "/var/log/" + (path.basename(destination)) + "/" + (path.basename(destination)) + ".err";
    }
    return mecano.write({
      content: "#!/bin/bash\n\n" + cwd + "\n\nname='" + options.name + "'\ncmd='" + options.cmd + "'\npid_file=\"" + pid_file + "\"\nout_file='" + out_file + "'\nerr_file='" + err_file + "'\n\nfunction start {\n  if running; then\n    echo \"$name already started\"\n  else\n    $cmd </dev/null >$out_file 2>$err_file " + detach + "\n    echo $! > $pid_file\n    echo \"$name started [`cat $pid_file`]\"\n  fi\n}\n\nfunction stop {\n  if running; then\n    kill $(<$pid_file) 2>/dev/null\n    echo \"$name stopped\"\n  else\n    echo \"$name already stopped\"\n  fi\n}\n\nfunction kill {\n  if running; then\n    kill -9 $(<$pid_file) 2>/dev/null\n    echo \"$name stopped\"\n  else\n    echo \"$name already stopped\"\n  fi\n}\n\nfunction status {\n  if running; then\n    pid=`cat $pid_file`\n    echo \"$name started [$pid]\"\n    return 0\n  else\n    echo \"$name stopped\"\n    return 3\n  fi\n}\n\nfunction running {\n  if [ -f $pid_file ]; then\n    pid=`cat $pid_file`\n    if kill -0 >/dev/null 2>&1 $pid; then\n       return 0\n    fi\n    rm -f $pid_file\n  fi\n  return 1\n}\n\nfunction help {\n  echo \"\"\n  echo \"$(basename \"${BASH_SOURCE}\") [help|start|status|stop]\"\n  echo \"\"\n  echo \"Manage the $name service.\"\n  echo \"\"\n  echo \"help      Print this message\"\n  echo \"start     Start the server\"\n  echo \"status    Report the server status\"\n  echo \"stop      Stop the server\"\n  echo \"kill      Force the server to stop\"\n  echo \"\"\n}\n\nRETVAL=0\ncase \"$1\" in\n  start)\n    start\n  ;;\n  stop)\n    stop\n  ;;\n  restart)\n    start\n    stop\n  ;;\n  status)\n    status\n    RETVAL=$?\n  ;;\n  *)\n    help\n  ;;\nesac\nexit $RETVAL",
      destination: options.destination,
      ssh: options.ssh,
      log: options.log,
      eof: true
    }, callback);
  };
  return do_destination();
};

path = require('path');

fs = require('ssh2-fs');

string = require('./misc/string');