commit 846345669d5fa625666eb3682260b7a80d9769c1
author Gian Merlino <gianmerlino@gmail.com> Sun Aug 14 23:01:55 2022 -0700
committer GitHub <noreply@github.com> Mon Aug 15 11:31:55 2022 +0530
tree 5b9fcb7a6bdd94d82193a21abc55acdcab15cc56
parent b26ab678b9e3b9724a667914234fe30e9a71038e

Error handling improvements for frame channels. (#12895)

* Error handling improvements for frame channels.

Two changes:

1) Send errors down in-memory channels (BlockingQueueFrameChannel) on
   failure. This ensures that in situations where a chain of processors
   has been set up on a single machine, all processors see the root
   cause error. In particular, this means the final processor in the
   chain reports the root cause error, which ensures that someone with
   a handle to the final processor will get the proper error.

2) Update FrameFileHttpResponseHandler to expect that the final fetch,
   rather than being simply empty, is also empty with a special header.
   This ensures that the handler is able to tell the difference between
   an empty fetch due to being at EOF, and an empty fetch due to a
   truncated HTTP response (after the 200 OK and headers are sent down,
   but before any content appears).

* Fix tests, imports.

* Checkstyle!