bugger-daemon/lib/resource/respond.js

buggerd sources

// Copyright (C) 2013 Jan Krems
//
// Permission is hereby granted, free of charge, to any person obtaining a copy of
// this software and associated documentation files (the "Software"), to deal in
// the Software without restriction, including without limitation the rights to
// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
// of the Software, and to permit persons to whom the Software is furnished to do
// so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.

var STATUS_CODES = require('http').STATUS_CODES;
var respond = module.exports;

respond.json = function(res, data, code) {
  var json;
  try {
    json = JSON.stringify(data);
  } catch (err) {
    return respond.error(res, err);
  }
  res.writeHead(code || 200, { 'Content-Type': 'application/json' });
  return res.end(json);
};

respond.error = function(res, err, code) {
  if ('number' === typeof err) {
    code = err;
    err = new Error(STATUS_CODES[code]);
  }

  err.code = (err.code || code || 500);
  res.writeHead(err.code, { 'Content-Type': 'application/json' });
  return res.end(JSON.stringify({
    message: err.message,
    code: err.code,
    context: err.context
  }));
};