Transaction name is `${method} unknown route` in Koa

Describe the bug Kibana APM UI shows all transaction name as ${method} unknown route. I think it should be ${method} ${path}. How should I fix?

To Reproduce Steps to reproduce the behavior: No configuration. Imported on the top of main script file.

Expected behavior I think it should be ${method} ${path}.

Environment (please complete the following information)

• OS: Ubuntu 16.04 LTS
• Node.js version: 10.15.0
• APM Server version: 6.5.4
• Agent version: 2.1.0

How are you starting the agent? (please tick one of the boxes)

• Calling agent.start() directly (e.g. require('elastic-apm-node').start(...))
• Requiring elastic-apm-node/start from within the source code
• Starting node with -r elastic-apm-node/start

Additional context Add any other context about the problem here.

• Agent config options

  Click to expand

  replace this line with your agent config options
  

• package.json dependencies:

  Click to expand

  replace this line with your dependencies section from package.json
  

[watson]

@sibelius the require-in-the-middle module uses the debug module for outputting debug info. So if you use the environment variable DEBUG you can get it to output debug information:

DEBUG=require-in-the-middle

[watson]

Ah, I figured it out! I’m now able to recreate this locally.

In a temp directory, you can recreated it by doing the following:

mkdir node_modules
npm install koa-router watson/apm-agent-nodejs#debug2
cp -r node_modules tmp-node_modules
mv tmp-node_modules node_modules/node_modules
DEBUG=* node test.js

Where test.js contains the following:

require('elastic-apm-node').start({serviceName: 'test'})
require('koa-router')

This will nest the node_modules folder inside it self which will trip up our algorithm.