newrelic/lib/instrumentation/q.js

New Relic agent

/*
 * Copyright 2020 New Relic Corporation. All rights reserved.
 * SPDX-License-Identifier: Apache-2.0
 */

'use strict'

const wrap = require('../shimmer').wrapMethod

module.exports = initialize

function initialize(agent, Q) {
  function wrapUninstrumented(original, method) {
    return agent.tracer.wrapFunctionFirstNoSegment(original, method)
  }

  if (Q.nextTick) {
    // The wrap() call for nextTick wipes the sub-function.  Save a reference
    // now so it can be restored later
    const savedRunAfter = Q.nextTick.runAfter

    wrap(Q, 'Q', 'nextTick', wrapUninstrumented)

    if (savedRunAfter) {
      Q.nextTick.runAfter = savedRunAfter
      wrap(Q.nextTick, 'Q.nextTick', 'runAfter', wrapUninstrumented)
    }
  }
}