[@sentry/tracing][express] Span is missing at the end of the transaction

[special-character]

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Package + Version

• @sentry/[email protected]
• @sentry/[email protected]

Description

When I am using Sentry tracing, there appears to be a span missing at the end of the request. I found this GH issue that had the same issue but it was seemingly resolved and I made sure I am using the latest version.

I believe I have this set up correctly from the docs:

import { server } from 'nexus'
import * as Sentry from '@sentry/node'
import * as Tracing from '@sentry/tracing'

// @ts-ignore
Sentry.init({
  dsn: 'Secret dsn 🤫',
  environment: process.env.APP_ENVIRONMENT,
  release: process.env.GIT_SHA,
  enabled: true,
  integrations: [
    new Sentry.Integrations.Http({ tracing: true }),
    new Tracing.Integrations.Express({
      app: server.express,
    }),
  ],
  tracesSampleRate: process.env.APP_ENVIRONMENT === 'production' ? 0.5 : 1,
})

server.express.use(Sentry.Handlers.requestHandler())
server.express.use(Sentry.Handlers.tracingHandler())

export { Sentry }

I will keep digging a bit but wanted to post here in case someone else is still running into this or could help out, thanks. This also might be because I am using nexus and there is something that it can't see but I am not entirely sure yet.

[special-character]

After a little more digging, I think a span is actually getting dropped but still don't know why.

I log a span in the express integration for case 3 and it logged this:

Span {
  traceId: '575dfa159e6448f5a81b5ed582031ba1',
  spanId: '8ecc928442e55836',
  startTimestamp: 1610133446.1545632,
  tags: {},
  data: {},
  parentSpanId: '9ef18c33332c2275',
  sampled: true,
  op: 'middleware.use',
  description: 'router',
  spanRecorder:
   SpanRecorder { spans: [ [Transaction], [Circular] ], _maxlen: 1000 },
  transaction:
   Transaction {
     traceId: '575dfa159e6448f5a81b5ed582031ba1',
     spanId: '9ef18c33332c2275',
     startTimestamp: 1610133446.1543927,
     tags: {},
     data: {},
     op: 'http.server',
     _measurements: {},
     _hub: Hub { _version: 3, _stack: [Array] },
     name: 'POST /graphql',
     _trimEnd: undefined,
     transaction: [Circular],
     sampled: true,
     spanRecorder: SpanRecorder { spans: [Array], _maxlen: 1000 } } }

It appears that the function in the fn.call block is never called (console logged in there too but it never happened).

When I found the traceId in sentry, the span with the above id wasn't on the trace.

[github-actions]

This issue has gone three weeks without activity. In another week, I will close it.

But! If you comment or otherwise update it, I will reset the clock, and if you label it Status: Backlog or Status: In Progress, I will leave it alone ... forever!

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"A weed is but an unloved flower." ― Ella Wheeler Wilcox 🥀