Mercurial > hg
view tests/bruterebase.py @ 41154:f18f665b1424
context: schedule file prefetch before comparing for cleanliness
When using a system like remotefilelog, we can occasionally run into scenarios
where the local content cache does not have the data we need to perform these
comparisons. These will be fetched on-demand, but individually; if the
remotefilelog server isn't extremely low latency, the runtime of the command
becomes dominated by the multiple getfile requests for individual files.
By performing the prefetch, we can download these files in bulk, and save server
resources and many network roundtrips.
Differential Revision: https://phab.mercurial-scm.org/D5532
author | Kyle Lippincott <spectral@google.com> |
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date | Tue, 08 Jan 2019 14:31:22 -0800 |
parents | 337d6e0fd9c9 |
children | 2372284d9457 |
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# bruterebase.py - brute force rebase testing # # Copyright 2017 Facebook, Inc. # # This software may be used and distributed according to the terms of the # GNU General Public License version 2 or any later version. from __future__ import absolute_import from mercurial import ( error, registrar, revsetlang, ) from hgext import rebase try: xrange except NameError: xrange = range cmdtable = {} command = registrar.command(cmdtable) @command(b'debugbruterebase') def debugbruterebase(ui, repo, source, dest): """for every non-empty subset of source, run rebase -r subset -d dest Print one line summary for each subset. Assume obsstore is enabled. """ srevs = list(repo.revs(source)) with repo.wlock(), repo.lock(): repolen = len(repo) cl = repo.changelog def getdesc(rev): result = cl.changelogrevision(rev).description if rev >= repolen: result += b"'" return result for i in xrange(1, 2 ** len(srevs)): subset = [rev for j, rev in enumerate(srevs) if i & (1 << j) != 0] spec = revsetlang.formatspec(b'%ld', subset) tr = repo.transaction(b'rebase') tr._report = lambda x: 0 # hide "transaction abort" ui.pushbuffer() try: rebase.rebase(ui, repo, dest=dest, rev=[spec]) except error.Abort as ex: summary = b'ABORT: %s' % ex except Exception as ex: summary = b'CRASH: %s' % ex else: # short summary about new nodes cl = repo.changelog descs = [] for rev in xrange(repolen, len(repo)): desc = b'%s:' % getdesc(rev) for prev in cl.parentrevs(rev): if prev > -1: desc += getdesc(prev) descs.append(desc) descs.sort() summary = b' '.join(descs) ui.popbuffer() repo.vfs.tryunlink(b'rebasestate') subsetdesc = b''.join(getdesc(rev) for rev in subset) ui.write((b'%s: %s\n') % (subsetdesc.rjust(len(srevs)), summary)) tr.abort()