snapi2/lib/responder.js

An API-first RESTful server framework built on Swagger and Restify

// Generated by CoffeeScript 1.12.7
'use strict';
var Promise, Responder, Response, codes, errors, jsonStream, stream;

Promise = require('bluebird');

errors = require('restify-errors');

stream = require('stream');

jsonStream = require('JSONStream');

Response = require('./response').Response;

codes = {
  successWithBody: 200,
  successNoBody: 204,
  movedPermanently: 301,
  found: 302,
  internalError: 500,
  invalidCredentials: 401,
  notAuthorized: 403
};

module.exports = Responder = (function() {
  function Responder(logger) {
    this.logger = logger;
  }

  Responder.prototype.errorResponse = function(err, response, next) {
    this.logger.log.error(err);
    if (err instanceof errors.InvalidCredentialsError) {
      response.header('Www-Authenticate', 'Basic');
    }
    return next(err);
  };

  Responder.prototype.respondStream = function(result, response) {
    var ref;
    response.writeHead(200, {
      'Content-Type': 'application/json; charset=utf-8'
    });
    if (result.objectMode || ((ref = result._readableState) != null ? ref.objectMode : void 0)) {
      return result.pipe(jsonStream.stringify()).pipe(response);
    } else {
      return result.pipe(response);
    }
  };

  Responder.prototype.respond = function(result, response, next) {
    var body, header, ref, statusCode, value;
    if (result instanceof Error) {
      return this.errorResponse(result, response, next);
    }
    if (result instanceof stream.Stream) {
      return this.respondStream(result, response);
    }
    body = result;
    statusCode = result != null ? codes.successWithBody : codes.successNoBody;
    if (result instanceof Response) {
      ref = result.headers;
      for (header in ref) {
        value = ref[header];
        response.header(header, value);
      }
      body = result.body;
      statusCode = result.statusCode;
    }
    response.send(statusCode, body);
    return next();
  };

  Responder.prototype.codes = codes;

  return Responder;

})();