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remotetreedatastore: make MissingNodesError subclass of KeyError
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Authored by singhsrb on Dec 15 2017, 4:11 PM.

Details

Reviewers
quark
Group Reviewers
Restricted Project
Summary

The union content store

  • iterates through all the stores it has until the current store has the content.
  • Or, it fails eventually if none of the stores have the content.

It does so by relying on the current store throwing a KeyError if it doesn't
have the content.

remotetreedatastore was throwing the MissingNodesError which means any
remaining stores after it would not even get a chance to look for the content.
This commit addresses the same.

Test Plan

Ran all the tests.

Diff Detail

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rFBHGX Facebook Mercurial Extensions
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Event Timeline

singhsrb created this revision.Dec 15 2017, 4:11 PM
Herald added a reviewer: Restricted Project. · View Herald TranscriptDec 15 2017, 4:11 PM
quark added a subscriber: quark.Dec 15 2017, 7:22 PM
quark added inline comments.
treemanifest/__init__.py
1712

Maybe just make this a KeyError:

class MissingNodesError(error.Abort, KeyError):

That's what error.LookupError does for revlogs.

singhsrb added inline comments.Dec 15 2017, 7:52 PM
treemanifest/__init__.py
1712

Neat!

singhsrb edited the summary of this revision. (Show Details)Dec 15 2017, 7:58 PM
singhsrb retitled this revision from remotetreedatastore: throw KeyError instead of MissingNodesError to remotetreedatastore: make MissingNodesError subclass of KeyError.
singhsrb updated this revision to Diff 4524.
quark accepted this revision.Dec 15 2017, 8:03 PM

Maybe the test also needs to be updated.

This revision is now accepted and ready to land.Dec 15 2017, 8:03 PM

the test test-treemanifest-infinitepush.t (included in this commit) reflects the change in behavior because of the change in error hierarchy. Am I missing something?

I see. I misunderstood how this works. The KeyError is a different exception generated in a different place.

singhsrb abandoned this revision.Jan 31 2018, 5:45 PM

Will be rebasing and floating for review again.