Mercurial > hg-stable
view tests/revnamesext.py @ 33668:cde4cfeb6e3e stable
ui: restore behavior to ignore some I/O errors (issue5658)
e9646ff34d55 and 1bfb9a63b98e refactored ui methods to no longer
silently swallow some IOError instances. This is arguably the
correct thing to do. However, it had the unfortunate side-effect
of causing StdioError to bubble up to sensitive code like
transaction aborts, leading to an uncaught exceptions and failures
to e.g. roll back a transaction. This could occur when a remote
HTTP or SSH client connection dropped. The new behavior is
resulting in semi-frequent "abandonded transaction" errors on
multiple high-volume repositories at Mozilla.
This commit effectively reverts e9646ff34d55 and 1bfb9a63b98e to
restore the old behavior.
I agree with the principle that I/O errors shouldn't be ignored.
That makes this change... unfortunate. However, our hands are tied
for what to do on stable. I think the proper solution is for the
ui's behavior to be configurable (possibly via a context manager).
During critical sections like transaction rollback and abort, it
should be possible to suppress errors. But this feature would not
be appropriate on stable.
author | Gregory Szorc <gregory.szorc@gmail.com> |
---|---|
date | Tue, 15 Aug 2017 13:04:31 -0700 |
parents | 46fa46608ca5 |
children | 086fc71fbb09 |
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# Dummy extension to define a namespace containing revision names from __future__ import absolute_import from mercurial import ( namespaces, ) def reposetup(ui, repo): names = {'r%d' % rev: repo[rev].node() for rev in repo} namemap = lambda r, name: names.get(name) nodemap = lambda r, node: ['r%d' % repo[node].rev()] ns = namespaces.namespace('revnames', templatename='revname', logname='revname', listnames=lambda r: names.keys(), namemap=namemap, nodemap=nodemap) repo.names.addnamespace(ns)