Setup for Remix with custom express server

[crestwood204]

What's the ideal setup for Sentry within a remix app with a custom express server? I am using "@sentry/remix": "9.24.0" and "@sentry/node": "9.24.0"

Original setup

Before I had the custom express server, I had the @sentry/remix package set up in both entry.client and entry.server which seemed to work well.

New setup

Now that I have the custom express server, I want to have Sentry still catch errors from custom middleware or other things generated within the express server. I added a instrument.ts file with a Sentry.init from @sentry/node and changed my start script in package.json to npx tsx --import server/utils/instrument.ts server/index.ts",. I also added Sentry.setupExpressErrorHandler(app); to the end of my server index file.

This seems correct except that I found the Sentry.init in my entry.server is not working (i.e. if I try to log something in a beforeSend it doesn't fire). I found that the Sentry.init in my instrument.ts file was the one logging to sentry for my remix server-side errors and that it basically overrode my entry.server one.

So, I deleted my entry.server Sentry.init.

Can't get user attribution to work

But, I'm now having trouble with user attribution (just for the server). Previously, I was using

Sentry.withIsolationScope(async (scope) => {
  scope.setUser(...)
}

within my handleRequest and handleDataRequest function within entry.server, but I found these no longer worked...I figured that I wanted user attribution on the express server as well anyway, so I got rid of this and created a custom middleware that just calls Sentry.setUser. This still doesn't work though.

Despite better judgement, I attempted to change the import in my instrument.ts file to @sentry/remix and now my user attribution suddenly works! However, I found that in a non-dev instance (i.e. npm run start), returning from a remix action hangs indefinitely! I'm assuming this is because sentry doesn't know it's in express land and doesn't return the response correctly...

For now, I've gone back to using @sentry/node on my instrument file, but none of the user attribution is working. Any advice on how to set this up correctly would be appreciated.

[mydea]

hey, can you clarify what did not work with the regular remix setup you had (in entry.server) once you started to use a custom express server? Were express errors/middlewares not captured?