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html_url issue_url id node_id user created_at updated_at author_association body reactions issue performed_via_github_app
https://github.com/simonw/datasette/issues/873#issuecomment-651193131 https://api.github.com/repos/simonw/datasette/issues/873 651193131 MDEyOklzc3VlQ29tbWVudDY1MTE5MzEzMQ== 9599 2020-06-29T15:27:00Z 2020-06-29T15:27:00Z OWNER

Aha! Yes it's not being called, and the reason is this: https://github.com/encode/starlette/issues/486

Short version: by default an exception raised during that phase is silently swallowed! You can avoid the swallowing by adding lifespan="on" to the call to uvicorn.run().

When I did that here:

uvicorn.run(ds.app(), host=host, port=port, log_level="info", lifespan="on")

The server failed to start with this error:

INFO: Started server process [68849] INFO: Waiting for application startup. ERROR: Exception in 'lifespan' protocol Traceback (most recent call last): File ".../uvicorn/lifespan/on.py", line 48, in main await app(scope, self.receive, self.send) File ".../uvicorn/middleware/proxy_headers.py", line 45, in __call__ return await self.app(scope, receive, send) File ".../datasette_debug_asgi.py", line 9, in wrapped_app if scope["path"] == "/-/asgi-scope": KeyError: 'path'

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