[27.1 backport] attach: don't return context cancelled error #5296
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In 3f0d90a we introduced a global signal handler and made sure all the contexts passed into command execution get (appropriately) cancelled when we get a SIGINT. Due to that change, and how we use this context during `docker attach`, we started to return the context cancelation error when a user signals the running `docker attach`. Since this is the intended behavior, we shouldn't return an error, so this commit adds checks to ignore this specific error in this case. Also adds a regression test. Signed-off-by: Laura Brehm <laurabrehm@hey.com> (cherry picked from commit 66aa0f6) Signed-off-by: Paweł Gronowski <pawel.gronowski@docker.com>
Codecov ReportAttention: Patch coverage is
Additional details and impacted files@@ Coverage Diff @@
## 27.0 #5296 +/- ##
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+ Coverage 61.05% 61.50% +0.45%
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Files 296 299 +3
Lines 20856 20866 +10
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+ Hits 12733 12834 +101
+ Misses 7205 7116 -89
+ Partials 918 916 -2 |
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closes #5294
- What I did
In #4993 we introduced a global signal handler and made sure all the contexts passed into command execution get (appropriately) cancelled when we get a
SIGINT.Due to how we use this context in
docker attach, this caused us to start returning a context cancelation error when a user signals the runningdocker attach.Since this is the intended behavior, we shouldn't return an error, so this commit adds checks to ignore this specific error in this case.
Also adds a regression test.
- How to verify it
Run the added test:
- Description for the changelog
- A picture of a cute animal (not mandatory but encouraged)