Add a wrapper to convert file streams to multipart #17327
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So we need to wrap the responders rather than changing them
| self.producer = producer | ||
| self.streaming = streaming | ||
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| self.wrapped_consumer.registerProducer(self, streaming) |
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| self.wrapped_consumer.registerProducer(self, streaming) | |
| self.wrapped_consumer.registerProducer(self, True) |
Would be good to know why you changed it to this. My understanding is that MultipartFileConsumer operates as a IPushProducer irrespective of what producer is, and so we should we always set the streaming flag in registerProducer.
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So this was a change that I made after I ran an integration test and found that the file streaming response was hanging indefinitely causing the original request to time out - changing it to this worked and so I didn't think much about it, but it sounds like maybe I need to investigate further...
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based on https://github.com/element-hq/synapse/compare/erikj/fixup_multipart
#17172 changed the storage provider fetch API, which caused breakage in 3rd party storage providers.
This PR fixes that by removing the change to the api, and adding a multipart file consumer which consumes a file stream and converts it to mulipart before streaming that out to the requester.