Setting transaction name doesn't work from child span.

[CoatedMoose]

Environment

How do you use Sentry?
Sentry SaaS (sentry.io)

Which SDK and version?
Python/Django: django-sentry-1.13.5, sentry-sdk-1.3.0 (also tried sentry-sdk-1.1.0)

Steps to Reproduce

We're using Sentry in Django and Graphene (for GraphQL support). We would like to set the transaction name based on GraphQL operation name.

urlpatterns = [
    # ...snip
    path(
        'graphql',
        csrf_exempt(MyGraphQLView.as_view(graphiql=settings.GRAPHIQL_ENABLED)),
    ),
]

class MyGraphQLView(graphene_django.views.GraphQLView):
    def execute_graphql_request(
        self, request, data, query, variables, operation_name, show_graphiql=False
    ):
        with sentry_sdk.configure_scope() as scope:
            transaction_name = f'graphql.{operation_name}' # graphql.OperationName
            scope.transaction = transaction_name
            # This works:
            scope._span._containing_transaction.name = transaction_name
            return super().execute_graphql_request(
                request, data, query, variables, operation_name, show_graphiql
            )

From the trace view in Sentry, the GraphQLView span is nested several spans down (in Django middlewares). From my understanding of the sentry documentation: set transaction name It seems like the scope.transaction = 'name' setter should be enough, but doesn't seem to work from child spans.

Expected Result

Sentry transaction name updated to graphql.OperationName.

Actual Result

Sentry transaction name stays as /graphql

[HazAT]

Thanks for reporting, we'll take a look

[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!

---

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

[CoatedMoose]

Resetting that clock...

[sl0thentr0py]

Hi @CoatedMoose, is this still a problem in the latest SDK version?

[CoatedMoose]

I'm in the middle of some tasks and I can't check right now, but will hopefully be able to later in the week.

[CoatedMoose]

There doesn't seem to be any improvement with version 1.5.7. The workaround from my initial report is still working.

[sl0thentr0py]

@CoatedMoose yes you're right that the transaction getter and setter on scope have different behaviour, I'll try to understand why this is the way this is and get back to you, hopefully with a fix. Thx for reporting!