briareus/lib/service/middleware/req-context-init.js

Briareus assists with Feature Branch deploys to ECS

'use strict'

const _ = require('lodash');
const uuidv4 = require('uuid/v4');

module.exports = function (service) {
  return function (req, res, next) {
    let context = {
      logData: { reqId: uuidv4() }
    };

    // Create context aware logger
    let levels = ['fatal', 'error', 'warn', 'info', 'debug', 'trace'];
    context.log = _.zipObject(levels, _.map(levels, (level) => {
      return (data, msg) => {
        if (_.isString(data)) {
          msg = data;
          data = {};
        }
        service.log[level](_.defaults(data, _.clone(context.logData)), msg);
      }
    }));

    req.context = context;

    next();
  }
};