mecano/lib/system/tmpfs.js

Common functions for system deployment.

// Generated by CoffeeScript 1.11.1
var discover, fs, merge, misc, path, uid_gid;

module.exports = function(options) {
  var i, key, len, ref;
  options.log({
    message: "Entering tmpfs action",
    level: 'DEBUG',
    module: 'mecano/tmpfs/index'
  });
  if (options.mount == null) {
    throw Error('Missing Mount Point');
  }
  if (options.merge == null) {
    options.merge = true;
  }
  if (options.backup == null) {
    options.backup = true;
  }
  if (options.perm == null) {
    options.perm = '0644';
  }
  options.content = {};
  options.content[options.mount] = {};
  ref = ['mount', 'perm', 'uid', 'gid', 'age', 'argu'];
  for (i = 0, len = ref.length; i < len; i++) {
    key = ref[i];
    options.content[options.mount][key] = options[key];
  }
  options.content[options.mount]['type'] = 'd';
  if (options.uid != null) {
    if (!/^[0-9]+/.exec(options.uid)) {
      if (options.name == null) {
        options.name = options.uid;
      }
    }
  }
  this.call(discover.system, function() {
    var available, ref1;
    available = ((ref1 = options.store['mecano:system:type']) === 'redhat' || ref1 === 'centos') && (options.store['mecano:system:release'][0] === '7');
    if (!available) {
      throw Error('tempfs not available on your OS');
    }
    options.log({
      message: "discovering tmpfs file target",
      level: 'DEBUG',
      module: 'mecano/tmpfs/index'
    });
    if (options.target == null) {
      options.target = options.name != null ? "/etc/tmpfiles.d/" + options.name + ".conf" : '/etc/tmpfiles.d/default.conf';
    }
    return options.log({
      message: "target set to " + options.target,
      level: 'DEBUG',
      module: 'mecano/tmpfs/index'
    });
  });
  this.call({
    shy: true,
    "if": options.merge,
    handler: function(_, callback) {
      options.log({
        message: "opening target file for merge",
        level: 'DEBUG',
        module: 'mecano/tmpfs/index'
      });
      return fs.readFile(options.ssh, options.target, 'utf8', function(err, data) {
        var source;
        if (err) {
          if (err.code === 'ENOENT') {
            return callback(null, false);
          }
          if (err) {
            return callback(err);
          }
        } else {
          source = misc.tmpfs.parse(data);
          options.content = merge({}, source, options.content);
          options.log({
            message: "content has been merged",
            level: 'DEBUG',
            module: 'mecano/tmpfs/index'
          });
          return callback(null, false);
        }
      });
    }
  });
  return this.call(function() {
    this.file(options, {
      content: misc.tmpfs.stringify(options.content),
      merge: false,
      target: options.target
    });
    return this.call({
      "if": function() {
        return this.status(-1);
      },
      handler: function() {
        options.log({
          message: "re-creating " + options.mount + " tmpfs file",
          level: 'INFO',
          module: 'mecano/tmpfs/index'
        });
        this.execute({
          cmd: "systemd-tmpfiles --remove " + options.target
        });
        return this.execute({
          cmd: "systemd-tmpfiles --create " + options.target
        });
      }
    });
  });
};

fs = require('ssh2-fs');

path = require('path');

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

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

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

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