elastic-apm-node/lib/instrumentation/modules/express-queue.js

The official Elastic APM agent for Node.js

/*
 * Copyright Elasticsearch B.V. and other contributors where applicable.
 * Licensed under the BSD 2-Clause License; you may not use this file except in
 * compliance with the BSD 2-Clause License.
 */

'use strict';

var shimmer = require('../shimmer');

module.exports = function (expressQueue, agent, { enabled }) {
  if (!enabled) return expressQueue;

  var ins = agent._instrumentation;

  return function wrappedExpressQueue(config) {
    var result = expressQueue(config);
    shimmer.wrap(result.queue, 'createJob', function (original) {
      return function (job) {
        if (job.next) {
          job.next = ins.bindFunction(job.next);
        }
        return original.apply(this, arguments);
      };
    });
    return result;
  };
};