Mongo traces no longer showing

[lwakefield]

Describe the bug

We recently upgraded some mongo dependencies:

FROM: 
    "mongodb": "^2.0.49",
    "mongoose": "^4.13.17",
    "mongoose-deep-populate": "^1.1.0",
TO:
    "mongodb": "^3.3.1",
    "mongoose": "^5.2.13",
    "mongoose-deep-populate": "^3.1.1",

Since that upgrade - mongo traces have stopped showing in APM.

I am testing an upgrade to dd-trace-js in case that fixes the issue. No luck with the upgrade.

Additionally I am in the process of testing the order in which dependecies are loaded to make sure dd-trace-js is still initialized first. It appears that dd-trace-js is still initialized before everything else.

Environment

• Operation system: Heroku Dyno
• Node version: 10.x
• Tracer version: 0.15.3
• Agent version: Heroku Buildpack

[rochdev]

It looks like since mongodb 3.3.0 they have merged mongodb-core which is thus no longer a standalone library. Since we instrument mongodb-core which no longer exists, the plugin is never used. We'll need to update the plugin to support the new merged project. If you do not have a strong reason to use >=3.3.0, I would recommend downgrading in the meantime. This should be fixed in the next few days.