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tests/test-remotefilelog-corrupt-cache.t
author Manuel Jacob <me@manueljacob.de>
Mon, 11 Jul 2022 01:51:20 +0200
branchstable
changeset 49378 094a5fa3cf52
parent 48874 af0b21d5a930
child 49859 8b369bcbadf1
permissions -rw-r--r--
procutil: make stream detection in make_line_buffered more correct and strict In make_line_buffered(), we don’t want to wrap the stream if we know that lines get flushed to the underlying raw stream already. Previously, the heuristic was too optimistic. It assumed that any stream which is not an instance of io.BufferedIOBase doesn’t need wrapping. However, there are buffered streams that aren’t instances of io.BufferedIOBase, like Mercurial’s own winstdout. The new logic is different in two ways: First, only for the check, if unwraps any combination of WriteAllWrapper and winstdout. Second, it skips wrapping the stream only if it is an instance of io.RawIOBase (or already wrapped). If it is an instance of io.BufferedIOBase, it gets wrapped. In any other case, the function raises an exception. This ensures that, if an unknown stream is passed or we add another wrapper in the future, we don’t wrap the stream if it’s already line buffered or not wrap the stream if it’s not line buffered. In fact, this was already helpful during development of this change. Without it, I possibly would have forgot that WriteAllWrapper needs to be ignored for the check, leading to unnecessary wrapping if stdout is unbuffered. The alternative would have been to always wrap unknown streams. However, I don’t think that anyone would benefit from being less strict. We can expect streams from the standard library to be subclassing either io.RawIOBase or io.BufferedIOBase, so running Mercurial in the standard way should not regress by this change. Py2exe might replace sys.stdout and sys.stderr, but that currently breaks Mercurial anyway and also these streams don’t claim to be interactive, so this function is not called for them.
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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0800d9e6e216 tests: disable remotefilelog on Windows
Matt Harbison <matt_harbison@yahoo.com>
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#require no-windows
0800d9e6e216 tests: disable remotefilelog on Windows
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  $ . "$TESTDIR/remotefilelog-library.sh"












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  $ hg init master







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  $ cd master












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  $ cat >> .hg/hgrc <<EOF












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  > [remotefilelog]












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  > server=True












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  > EOF












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  $ echo x > x












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  $ echo y > y












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  $ echo z > z












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  $ hg commit -qAm xy












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  $ cd ..












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  $ hgcloneshallow ssh://user@dummy/master shallow -q












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  3 files fetched over 1 fetches - (3 misses, 0.00% hit ratio) over *s (glob)












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  $ cd shallow












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Verify corrupt cache handling repairs by default












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  $ hg up -q null












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  $ chmod u+w $CACHEDIR/master/11/f6ad8ec52a2984abaafd7c3b516503785c2072/1406e74118627694268417491f018a4a883152f0












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  $ echo x > $CACHEDIR/master/11/f6ad8ec52a2984abaafd7c3b516503785c2072/1406e74118627694268417491f018a4a883152f0












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  $ hg up tip












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  3 files updated, 0 files merged, 0 files removed, 0 files unresolved












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  1 files fetched over 1 fetches - (1 misses, 0.00% hit ratio) over *s (glob)












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Verify corrupt cache error message












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  $ hg up -q null












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  $ cat >> .hg/hgrc <<EOF












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  > [remotefilelog]












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  > validatecache=off












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  > EOF












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  $ chmod u+w $CACHEDIR/master/11/f6ad8ec52a2984abaafd7c3b516503785c2072/1406e74118627694268417491f018a4a883152f0












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  $ echo x > $CACHEDIR/master/11/f6ad8ec52a2984abaafd7c3b516503785c2072/1406e74118627694268417491f018a4a883152f0







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  $ hg up tip 2>&1 | egrep "^[^ ].*unexpected remotefilelog"







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  hgext.remotefilelog.shallowutil.BadRemotefilelogHeader: unexpected remotefilelog header: illegal format (py3 !)







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Verify detection and remediation when remotefilelog.validatecachelog is set












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  $ cat >> .hg/hgrc <<EOF












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  > [remotefilelog]












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  > validatecachelog=$PWD/.hg/remotefilelog_cache.log












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  > validatecache=strict












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  > EOF












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  $ chmod u+w $CACHEDIR/master/11/f6ad8ec52a2984abaafd7c3b516503785c2072/1406e74118627694268417491f018a4a883152f0












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  $ echo x > $CACHEDIR/master/11/f6ad8ec52a2984abaafd7c3b516503785c2072/1406e74118627694268417491f018a4a883152f0












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  $ hg up tip












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  3 files updated, 0 files merged, 0 files removed, 0 files unresolved












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  1 files fetched over 1 fetches - (1 misses, 0.00% hit ratio) over *s (glob)












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  $ cat .hg/remotefilelog_cache.log












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  corrupt $TESTTMP/hgcache/master/11/f6ad8ec52a2984abaafd7c3b516503785c2072/1406e74118627694268417491f018a4a883152f0 during contains












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Verify handling of corrupt server cache












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  $ rm -f ../master/.hg/remotefilelogcache/y/076f5e2225b3ff0400b98c92aa6cdf403ee24cca












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  $ touch ../master/.hg/remotefilelogcache/y/076f5e2225b3ff0400b98c92aa6cdf403ee24cca












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  $ clearcache












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  $ hg prefetch -r .












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  3 files fetched over 1 fetches - (3 misses, 0.00% hit ratio) over *s (glob)












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  $ test -s ../master/.hg/remotefilelogcache/y/076f5e2225b3ff0400b98c92aa6cdf403ee24cca












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  $ hg debugremotefilelog $CACHEDIR/master/95/cb0bfd2977c761298d9624e4b4d4c72a39974a/076f5e2225b3ff0400b98c92aa6cdf403ee24cca












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  size: 2 bytes












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  path: $TESTTMP/hgcache/master/95/cb0bfd2977c761298d9624e4b4d4c72a39974a/076f5e2225b3ff0400b98c92aa6cdf403ee24cca 












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  key: 076f5e2225b3 












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          node =>           p1            p2      linknode     copyfrom












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  076f5e2225b3 => 000000000000  000000000000  f3d0bb0d1e48  














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