How can I cleanup/modify transaction names in PHP/Symfony

[mkilmanas]

I want to group together transactions which are essentially the same thing. E.g.

• GET https://api.mydomain.com/foos/798y12031u0
• GET https://api.mydomain.com/foos/92kd10axl829
• GET https://api.mydomain.com/foos/ar3w98059jjx
  should all be grouped into
• GET https://api.mydomain.com/foos/{fooID}

As the grouping seems to be happening by transaction name, I seem to be missing access to the event before it is submitted. Transactions are explicitly bypassing before_send processor in favour of the traces_sampler, which in turn runs very early and the name/tags there do not reflect in the final submission.

So how can I achieve this grouping then? I was able to do this easily in the JavaScript version - that is very nicely documented

[stayallive]

See: getsentry/sentry-symfony#649, it's being tracked already and we are working on it!

[mkilmanas]

Glad to hear!

Any backstory as to why the transactions are being excluded from before_send processing? That sounds like a perfect place to hook into for customisations (and compared to the rest that should not have a significant performance penalty; it's optional anyway)

[stayallive]

There is: https://develop.sentry.dev/sdk/performance/#interaction-with-beforesend-and-event-processors.