fix(django): Avoid ValueError in async middleware process_* hooks#6698
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process_* hooksValueError in async middleware process_* hooks
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When an async Django middleware defines an `async def` hook such as
`process_view` or `process_exception`, the SDK wrapped it in a synchronous
function. That hid the coroutine from Django's `iscoroutinefunction` check in
`BaseHandler.load_middleware`, so Django wrapped the hook in `SyncToAsync` and
called it synchronously. The underlying coroutine was then never awaited, and
the request failed with:
```
ValueError: The view ... didn't return an HttpResponse object.
It returned an unawaited coroutine instead.
```
`_get_wrapped_method` in the Django middleware integration now produces an
`async def` wrapper when the wrapped middleware hook is a coroutine function,
instead of always producing a synchronous wrapper.
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alexander-alderman-webb
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Description
When an async Django middleware defines an
async defhook such asprocess_vieworprocess_exception, the SDK wrapped it in a synchronous function. That hid the coroutine from Django'siscoroutinefunctioncheck inBaseHandler.load_middleware, so Django wrapped the hook inSyncToAsyncand called it synchronously. The underlying coroutine was then never awaited, and the request failed with:_get_wrapped_methodin the Django middleware integration now produces anasync defwrapper when the wrapped middleware hook is a coroutine function, instead of always producing a synchronous wrapper.Issues
Discussed on Discord https://discord.com/channels/621778831602221064/1521260879218348103