newrelic/lib/subscribers/express/param.js

New Relic agent

/*
 * Copyright 2025 New Relic Corporation. All rights reserved.
 * SPDX-License-Identifier: Apache-2.0
 */

'use strict'

const ExpressSubscriber = require('./base')

class ExpressParamSubscriber extends ExpressSubscriber {
  constructor({ agent, logger, packageName }) {
    super({ agent, logger, packageName, channelName: 'nr_param' })
  }

  handler(data) {
    const [route, fn] = data?.arguments
    const routeName = `[param handler :${route}]`
    data.arguments[1] = this.wrapper.wrap({ handler: fn, route: routeName, nextIdx: 2 })
  }
}

module.exports = ExpressParamSubscriber