laas-admin-api/lib/logger.js

LaaS admin api server.

(function () {
  'use strict';

  var uuid = require('node-uuid').v4;
  var clone = require('clone-deep');

  module.exports = exports = function (name) {
    var cluster = require('cluster'), master = cluster.isMaster;
    var bunyan = require('bunyan');
    var logger = bunyan.createLogger({
      name: name || require('../package.json').name,
      level: 'info',
      master: master || void 0,
      worker: master ? void 0 : cluster.worker.id,
      serializers: { req: reqSerializer, res: bunyan.stdSerializers.res, err: bunyan.stdSerializers.err }
    });
    console.error = logger.error.bind(logger);
    console.log = logger.info.bind(logger);
    console.warn = logger.warn.bind(logger);
    logger.middleware = middleware;

    return logger;
  };

  function middleware () {
    return function (req, res, next) {
      var end = res.end;
      req.requestId = uuid();
      res.setHeader('x-request-id', req.requestId);
      console.log({ req: req }, 'Http request received');
      res.end = function () {
        end.apply(res, arguments);
        console.log({ req: req, res: res }, 'Http request handled');
      };
      next();
    }
  }

  function reqSerializer(req) {
    var serialised = clone({
      method: req.method,
      url: req.url,
      headers: req.headers,
      ip: req.ip
    });
    if (serialised.headers) delete serialised.headers.authorization;
    return serialised;
  }
})();