Cleanup the symantics of ACS Handler #3225
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angelcar
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May 26, 2022
nodir-t
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angelcar
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The ACS handler was using a channel to support looping, but the channel was only sent to from the current thread via a go routine that would just write to the channel. The rewrite maintains the behavior of always connecting when disconnected potentially after a retry backoff. However it uses a simple endless for loop rather than reading from channels to mimic this straightforward behavior. The rewrite also adheres to the interface contract on returning the error from the context if it is Done for any reason other than cancelled.
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sparrc
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Summary
The ACS handler was using a channel to support looping, but the
channel was only sent to from the current thread via a go routine
that would just write to the channel.
The rewrite maintains the behavior of always connecting when
disconnected potentially after a retry backoff. However it uses
a simple endless for loop rather than reading from channels to
mimic this straightforward behavior.
The rewrite also adheres to the interface contract on returning
the error from the context if it is Done for any reason other
than cancelled.
Testing
Added additional tests to validate that all paths reconnect or exit when Context is Error or Cancelled, with appropriate returns. No additional testing outside of Unit/Functional tests.
Licensing
By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.