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Differential D3994

fastannotate: initial import from Facebook's hg-experimental
ClosedPublic

Authored by durin42 on Aug 1 2018, 11:17 AM.

Details

Reviewers
indygreg
Group Reviewers
hg-reviewers
Commits
rHG1ddb296e0dee: fastannotate: initial import from Facebook's hg-experimental
Summary

I made as few changes as I could to get the tests to pass, but this
was a bit involved due to some churn in the blame code since someone
last gave fastannotate any TLC.

There's still follow-up work here to rip out support for old versions
of hg and to integrate the protocol with modern standards.

Some performance numbers (all on my 2016 MacBook Pro with a 2.6Ghz i7):

Mercurial mercurial/manifest.py
traditional blame
time: real 1.050 secs (user 0.990+0.000 sys 0.060+0.000)
build cache
time: real 5.900 secs (user 5.720+0.000 sys 0.110+0.000)
fastannotate
time: real 0.120 secs (user 0.100+0.000 sys 0.020+0.000)

Mercurial mercurial/localrepo.py
traditional blame
time: real 3.330 secs (user 3.220+0.000 sys 0.070+0.000)
build cache
time: real 30.610 secs (user 30.190+0.000 sys 0.230+0.000)
fastannotate
time: real 0.180 secs (user 0.160+0.000 sys 0.020+0.000)

mozilla-central dom/ipc/ContentParent.cpp
traditional blame
time: real 7.640 secs (user 7.210+0.000 sys 0.380+0.000)
build cache
time: real 98.650 secs (user 97.000+0.000 sys 0.950+0.000)
fastannotate
time: real 1.580 secs (user 1.340+0.000 sys 0.240+0.000)

mozilla-central dom/base/nsDocument.cpp
traditional blame
time: real 17.110 secs (user 16.490+0.000 sys 0.500+0.000)
build cache
time: real 399.750 secs (user 394.520+0.000 sys 2.610+0.000)
fastannotate
time: real 1.780 secs (user 1.530+0.000 sys 0.240+0.000)

So building the cache is expensive (but might be faster with xdiff
enabled), but the blame results are *way* faster.

Diff Detail

Repository
rHG Mercurial
Lint
Automatic diff as part of commit; lint not applicable.
Unit
Automatic diff as part of commit; unit tests not applicable.

Event Timeline

durin42 created this revision.Aug 1 2018, 11:17 AM
quark added a subscriber: quark.Aug 1 2018, 11:45 AM

I would mention in the commit message that building cache is much faster with linkrevcache prebuilt.

durin42 updated this revision to Diff 9767.Aug 1 2018, 6:47 PM
quark added a comment.Aug 2 2018, 4:17 PM

I'd also like to see C linelog benchmark data mentioned. The current commit message implies diff algorithm is the bottleneck. That's misleading.

durin42 added a comment.Aug 2 2018, 4:21 PM
In D3994#62892, @quark wrote:

I'd also like to see C linelog benchmark data mentioned. The current commit message implies diff algorithm is the bottleneck. That's misleading.

Please feel encouraged to contribute your own numbers here. I probably can't be bothered.

quark edited the summary of this revision. (Show Details)Aug 2 2018, 6:43 PM
quark edited the summary of this revision. (Show Details)Aug 2 2018, 6:56 PM
quark edited the summary of this revision. (Show Details)Aug 2 2018, 8:52 PM
indygreg added subscribers: yuja, indygreg.Aug 7 2018, 7:19 PM

I only looked at some of this code.

Overall, my threshold for adding to core is low. I think we should land then iterate.

I would really like to see functionality related to modifying the behavior of annotate live in core. I think it will be easier to comprehend when implemented that way. I envision someday having arguments passed to annotate() that control whether linelog is used, etc. We may end up inventing something like diffopts but for annotate operations.

It might help to think of this extension as two features: a cache for linelog data and user-facing UI to use it. The former is the most important to move to core. Especially since I imagine we don't want an hg fastannotate command lingering around forever (we would want to consolidate with hg annotate I think).

The most concerning part of this extension is the wire protocol functionality. It is not suitable to ship to end-users because of forward compatibility concerns.

The wire protocol functionality is literally transferring files off disk with little to no regard for the format of those files. The wire protocol doesn't expose the version of the files on disk. And that's obviously bad for future compatibility. We need some kind of compatibility checking that the client is capable of understanding the data the server will send it. This could be as simple as the server capabilities string advertising the on-disk format and clients ensuring they can speak the server's format before attempting to fetch that data.

Of course, there could be a mix of data versions on disk given the current simple storage mechanism. We probably want to use separate directories for each version of the cached data so we don't mix streams. Or at the very least the server needs to validate that on-disk data it is serving matches the expected version from the client. Otherwise e.g. a server could serve up an old file version. Or a downgraded server could serve up a new file version.

I think the most robust way forward is to have version-specific capabilities, wire protocol commands, and on-disk locations. This leaves the least margin for error and yields the greatest flexibility for changing formats and exchange semantics later without breaking BC.

hgext/fastannotate/__init__.py
28

branch here is probably not the correct terminology.

42

I would prefer if there were a separate boolean option for each mode. That way, individual .hg/hgrc files can override specific behavior without overriding global defaults. It is a more flexible config model. We can, of course, have some options imply others.

45

Should this be a template?

58

This should be a more description option, like exchange-cache or cache-pull.

63–68

Since remotefilelog is not part of core, we probably want to nuke this feature.

177–178

I think this wants to be in extsetup() since it mutates global module state.

Ideally it would be part of reposetup() since it only matters on repos that have this extension enabled.

(This comes into play in e.g. hgweb environments, where some repos may not have the extension enabled.)

183

Won't repo.requirements always be defined?

hgext/fastannotate/context.py
760–773

This wants to move to a utils module somewhere.

hgext/fastannotate/formatter.py
4

I'm sure @yuja has opinions about this file.

hgext/fastannotate/protocol.py
44

The use of \0 means we're a binary format. I'd prefer that we not e.g. format integers to strings if we're using binary exchange. Maybe throw some CBOR at the problem?

138–140

A lot of this function can be deleted since we don't support remotefilelog.

183–185

Ideally this would call a method directly instead of going through callcommand(). (I would like to remove callcommand() in the future.)

209

Perhaps the default value for mainbranch should be default?

211

Nuke it. Then inline the lambda so it isn't abstracted.

247–251

The 1st and 3rd setup items here should be in extsetup() since they modify global state (I think).

Ideally we'd have a registrar for these things so unloaded extensions don't have wire protocol modifications affect other repos in-process. But, yeah, not easy.

hgext/fastannotate/revmap.py
24

Nit: I'd name this magic instead of header since that appears to be what it is (REVMAP1\0).

25–31

I generally like packing all the constant-length fields first then putting variable-length fields afterwards. That way you can do one read to get all the known data then do another read to get the variable-length data.

Also, \0 terminated paths mean the reader has to scan. It is better to encode the length so that scan can be avoided.

durin42 edited the summary of this revision. (Show Details)Aug 9 2018, 3:13 PM
durin42 added a comment.Aug 9 2018, 3:13 PM

Addressed comments as follow-ups, mostly via recording a big TODO.

hgext/fastannotate/protocol.py
247–251

This actually runs inside a reposetup() method, so I think it's already sufficiently paranoid.

indygreg accepted this revision.Aug 20 2018, 3:52 PM

I looked this over again. I still have a number of concerns around this functionality. It really needs to be cleaned up. Especially the wire protocol and UI bits. But I suppose that's what the EXPERIMENTAL label is for. As long as we're not committed to backwards compatibility, I think it is appropriate to land in core then iterate. But let's try to fix as much before the end of 4.8 as possible to minimize impact for people who deploy this. The wire protocol and on-disk format compatibility issues should be top of our list.

This revision is now accepted and ready to land.Aug 20 2018, 3:52 PM
Closed by commit rHG1ddb296e0dee: fastannotate: initial import from Facebook's hg-experimental (authored by durin42). · Explain WhyAug 20 2018, 3:54 PM
This revision was automatically updated to reflect the committed changes.

Revision Contents
Changeset List

Diff 10471

hgext/fastannotate/__init__.py

  • This file was added.
# Copyright 2016-present Facebook. All Rights Reserved.
#
# fastannotate: faster annotate implementation using linelog
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.
"""yet another annotate implementation that might be faster (EXPERIMENTAL)
The fastannotate extension provides a 'fastannotate' command that makes
use of the linelog data structure as a cache layer and is expected to
be faster than the vanilla 'annotate' if the cache is present.
In most cases, fastannotate requires a setup that mainbranch is some pointer
that always moves forward, to be most efficient.
Using fastannotate together with linkrevcache would speed up building the
annotate cache greatly. Run "debugbuildlinkrevcache" before
"debugbuildannotatecache".
::
[fastannotate]
# specify the main branch head. the internal linelog will only contain
# the linear (ignoring p2) "mainbranch". since linelog cannot move
# backwards without a rebuild, this should be something that always moves
# forward, usually it is "master" or "@".
mainbranch = master
indygregUnsubmitted
Not Done

branch here is probably not the correct terminology.

indygreg: `branch` here is probably not the correct terminology.
# fastannotate supports different modes to expose its feature.
# a list of combination:
# - fastannotate: expose the feature via the "fastannotate" command which
# deals with everything in a most efficient way, and provides extra
# features like --deleted etc.
# - fctx: replace fctx.annotate implementation. note:
# a. it is less efficient than the "fastannotate" command
# b. it will make it practically impossible to access the old (disk
# side-effect free) annotate implementation
# c. it implies "hgweb".
# - hgweb: replace hgweb's annotate implementation. conflict with "fctx".
# (default: fastannotate)
modes = fastannotate
indygregUnsubmitted
Not Done

I would prefer if there were a separate boolean option for each mode. That way, individual .hg/hgrc files can override specific behavior without overriding global defaults. It is a more flexible config model. We can, of course, have some options imply others.

indygreg: I would prefer if there were a separate boolean option for each mode. That way, individual .
# default format when no format flags are used (default: number)
defaultformat = changeset, user, date
indygregUnsubmitted
Not Done

Should this be a template?

indygreg: Should this be a template?
# serve the annotate cache via wire protocol (default: False)
# tip: the .hg/fastannotate directory is portable - can be rsynced
server = True
# build annotate cache on demand for every client request (default: True)
# disabling it could make server response faster, useful when there is a
# cronjob building the cache.
serverbuildondemand = True
# update local annotate cache from remote on demand
# (default: True for remotefilelog repo, False otherwise)
client = True
indygregUnsubmitted
Not Done

This should be a more description option, like exchange-cache or cache-pull.

indygreg: This should be a more description option, like `exchange-cache` or `cache-pull`.
# path to use when connecting to the remote server (default: default)
remotepath = default
# share sshpeer with remotefilelog. this would allow fastannotate to peek
# into remotefilelog internals, and steal its sshpeer, or in the reversed
# direction: donate its sshpeer to remotefilelog. disable this if
# fastannotate and remotefilelog should not share a sshpeer when their
# endpoints are different and incompatible. (default: True)
clientsharepeer = True
indygregUnsubmitted
Not Done

Since remotefilelog is not part of core, we probably want to nuke this feature.

indygreg: Since remotefilelog is not part of core, we probably want to nuke this feature.
# minimal length of the history of a file required to fetch linelog from
# the server. (default: 10)
clientfetchthreshold = 10
# use flock instead of the file existence lock
# flock may not work well on some network filesystems, but they avoid
# creating and deleting files frequently, which is faster when updating
# the annotate cache in batch. if you have issues with this option, set it
# to False. (default: True if flock is supported, False otherwise)
useflock = True
# for "fctx" mode, always follow renames regardless of command line option.
# this is a BC with the original command but will reduced the space needed
# for annotate cache, and is useful for client-server setup since the
# server will only provide annotate cache with default options (i.e. with
# follow). do not affect "fastannotate" mode. (default: True)
forcefollow = True
# for "fctx" mode, always treat file as text files, to skip the "isbinary"
# check. this is consistent with the "fastannotate" command and could help
# to avoid a file fetch if remotefilelog is used. (default: True)
forcetext = True
# use unfiltered repo for better performance.
unfilteredrepo = True
# sacrifice correctness in some corner cases for performance. it does not
# affect the correctness of the annotate cache being built. the option
# is experimental and may disappear in the future (default: False)
perfhack = True
"""
from __future__ import absolute_import
from mercurial.i18n import _
from mercurial import (
error as hgerror,
localrepo,
registrar,
util,
)
from . import (
commands,
context,
protocol,
)
# Note for extension authors: ONLY specify testedwith = 'ships-with-hg-core' for
# extensions which SHIP WITH MERCURIAL. Non-mainline extensions should
# be specifying the version(s) of Mercurial they are tested with, or
# leave the attribute unspecified.
testedwith = 'ships-with-hg-core'
cmdtable = commands.cmdtable
configtable = {}
configitem = registrar.configitem(configtable)
configitem('fastannotate', 'modes', default=['fastannotate'])
configitem('fastannotate', 'server', default=False)
configitem('fastannotate', 'useflock', default=True)
configitem('fastannotate', 'client')
configitem('fastannotate', 'unfilteredrepo', default=True)
configitem('fastannotate', 'defaultformat', default=['number'])
configitem('fastannotate', 'perfhack', default=False)
configitem('fastannotate', 'mainbranch')
configitem('fastannotate', 'forcetext', default=True)
configitem('fastannotate', 'forcefollow', default=True)
configitem('fastannotate', 'clientfetchthreshold', default=10)
configitem('fastannotate', 'clientsharepeer', default=True)
configitem('fastannotate', 'serverbuildondemand', default=True)
configitem('fastannotate', 'remotepath', default='default')
def _flockavailable():
try:
import fcntl
fcntl.flock
except StandardError:
return False
else:
return True
def uisetup(ui):
modes = set(ui.configlist('fastannotate', 'modes'))
if 'fctx' in modes:
modes.discard('hgweb')
for name in modes:
if name == 'fastannotate':
commands.registercommand()
elif name == 'hgweb':
from . import support
support.replacehgwebannotate()
elif name == 'fctx':
from . import support
support.replacefctxannotate()
support.replaceremotefctxannotate()
commands.wrapdefault()
else:
raise hgerror.Abort(_('fastannotate: invalid mode: %s') % name)
if ui.configbool('fastannotate', 'server'):
protocol.serveruisetup(ui)
if ui.configbool('fastannotate', 'useflock', _flockavailable()):
context.pathhelper.lock = context.pathhelper._lockflock
# fastannotate has its own locking, without depending on repo lock
localrepo.localrepository._wlockfreeprefix.add('fastannotate/')
indygregUnsubmitted
Not Done

I think this wants to be in extsetup() since it mutates global module state.

Ideally it would be part of reposetup() since it only matters on repos that have this extension enabled.

(This comes into play in e.g. hgweb environments, where some repos may not have the extension enabled.)

indygreg: I think this wants to be in `extsetup()` since it mutates global module state. Ideally it…
def reposetup(ui, repo):
client = ui.configbool('fastannotate', 'client', default=None)
if client is None:
if util.safehasattr(repo, 'requirements'):
client = 'remotefilelog' in repo.requirements
indygregUnsubmitted
Not Done

Won't repo.requirements always be defined?

indygreg: Won't `repo.requirements` always be defined?
if client:
protocol.clientreposetup(ui, repo)

hgext/fastannotate/commands.py

  • This file was added.
# Copyright 2016-present Facebook. All Rights Reserved.
#
# commands: fastannotate commands
#
# 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
import os
from mercurial.i18n import _
from mercurial import (
commands,
error,
extensions,
patch,
pycompat,
registrar,
scmutil,
util,
)
from . import (
context as facontext,
error as faerror,
formatter as faformatter,
)
cmdtable = {}
command = registrar.command(cmdtable)
def _matchpaths(repo, rev, pats, opts, aopts=facontext.defaultopts):
"""generate paths matching given patterns"""
perfhack = repo.ui.configbool('fastannotate', 'perfhack')
# disable perfhack if:
# a) any walkopt is used
# b) if we treat pats as plain file names, some of them do not have
# corresponding linelog files
if perfhack:
# cwd related to reporoot
reporoot = os.path.dirname(repo.path)
reldir = os.path.relpath(pycompat.getcwd(), reporoot)
if reldir == '.':
reldir = ''
if any(opts.get(o[1]) for o in commands.walkopts): # a)
perfhack = False
else: # b)
relpats = [os.path.relpath(p, reporoot) if os.path.isabs(p) else p
for p in pats]
# disable perfhack on '..' since it allows escaping from the repo
if any(('..' in f or
not os.path.isfile(
facontext.pathhelper(repo, f, aopts).linelogpath))
for f in relpats):
perfhack = False
# perfhack: emit paths directory without checking with manifest
# this can be incorrect if the rev dos not have file.
if perfhack:
for p in relpats:
yield os.path.join(reldir, p)
else:
def bad(x, y):
raise error.Abort("%s: %s" % (x, y))
ctx = scmutil.revsingle(repo, rev)
m = scmutil.match(ctx, pats, opts, badfn=bad)
for p in ctx.walk(m):
yield p
fastannotatecommandargs = {
'options': [
('r', 'rev', '.', _('annotate the specified revision'), _('REV')),
('u', 'user', None, _('list the author (long with -v)')),
('f', 'file', None, _('list the filename')),
('d', 'date', None, _('list the date (short with -q)')),
('n', 'number', None, _('list the revision number (default)')),
('c', 'changeset', None, _('list the changeset')),
('l', 'line-number', None, _('show line number at the first '
'appearance')),
('e', 'deleted', None, _('show deleted lines (slow) (EXPERIMENTAL)')),
('', 'no-content', None, _('do not show file content (EXPERIMENTAL)')),
('', 'no-follow', None, _("don't follow copies and renames")),
('', 'linear', None, _('enforce linear history, ignore second parent '
'of merges (EXPERIMENTAL)')),
('', 'long-hash', None, _('show long changeset hash (EXPERIMENTAL)')),
('', 'rebuild', None, _('rebuild cache even if it exists '
'(EXPERIMENTAL)')),
] + commands.diffwsopts + commands.walkopts + commands.formatteropts,
'synopsis': _('[-r REV] [-f] [-a] [-u] [-d] [-n] [-c] [-l] FILE...'),
'inferrepo': True,
}
def fastannotate(ui, repo, *pats, **opts):
"""show changeset information by line for each file
List changes in files, showing the revision id responsible for each line.
This command is useful for discovering when a change was made and by whom.
By default this command prints revision numbers. If you include --file,
--user, or --date, the revision number is suppressed unless you also
include --number. The default format can also be customized by setting
fastannotate.defaultformat.
Returns 0 on success.
.. container:: verbose
This command uses an implementation different from the vanilla annotate
command, which may produce slightly different (while still reasonable)
outputs for some cases.
Unlike the vanilla anootate, fastannotate follows rename regardless of
the existence of --file.
For the best performance when running on a full repo, use -c, -l,
avoid -u, -d, -n. Use --linear and --no-content to make it even faster.
For the best performance when running on a shallow (remotefilelog)
repo, avoid --linear, --no-follow, or any diff options. As the server
won't be able to populate annotate cache when non-default options
affecting results are used.
"""
if not pats:
raise error.Abort(_('at least one filename or pattern is required'))
# performance hack: filtered repo can be slow. unfilter by default.
if ui.configbool('fastannotate', 'unfilteredrepo'):
repo = repo.unfiltered()
rev = opts.get('rev', '.')
rebuild = opts.get('rebuild', False)
diffopts = patch.difffeatureopts(ui, opts, section='annotate',
whitespace=True)
aopts = facontext.annotateopts(
diffopts=diffopts,
followmerge=not opts.get('linear', False),
followrename=not opts.get('no_follow', False))
if not any(opts.get(s)
for s in ['user', 'date', 'file', 'number', 'changeset']):
# default 'number' for compatibility. but fastannotate is more
# efficient with "changeset", "line-number" and "no-content".
for name in ui.configlist('fastannotate', 'defaultformat', ['number']):
opts[name] = True
ui.pager('fastannotate')
template = opts.get('template')
if template == 'json':
formatter = faformatter.jsonformatter(ui, repo, opts)
else:
formatter = faformatter.defaultformatter(ui, repo, opts)
showdeleted = opts.get('deleted', False)
showlines = not bool(opts.get('no_content'))
showpath = opts.get('file', False)
# find the head of the main (master) branch
master = ui.config('fastannotate', 'mainbranch') or rev
# paths will be used for prefetching and the real annotating
paths = list(_matchpaths(repo, rev, pats, opts, aopts))
# for client, prefetch from the server
if util.safehasattr(repo, 'prefetchfastannotate'):
repo.prefetchfastannotate(paths)
for path in paths:
result = lines = existinglines = None
while True:
try:
with facontext.annotatecontext(repo, path, aopts, rebuild) as a:
result = a.annotate(rev, master=master, showpath=showpath,
showlines=(showlines and
not showdeleted))
if showdeleted:
existinglines = set((l[0], l[1]) for l in result)
result = a.annotatealllines(
rev, showpath=showpath, showlines=showlines)
break
except (faerror.CannotReuseError, faerror.CorruptedFileError):
# happens if master moves backwards, or the file was deleted
# and readded, or renamed to an existing name, or corrupted.
if rebuild: # give up since we have tried rebuild already
raise
else: # try a second time rebuilding the cache (slow)
rebuild = True
continue
if showlines:
result, lines = result
formatter.write(result, lines, existinglines=existinglines)
formatter.end()
_newopts = set([])
_knownopts = set([opt[1].replace('-', '_') for opt in
(fastannotatecommandargs['options'] + commands.globalopts)])
def _annotatewrapper(orig, ui, repo, *pats, **opts):
"""used by wrapdefault"""
# we need this hack until the obsstore has 0.0 seconds perf impact
if ui.configbool('fastannotate', 'unfilteredrepo'):
repo = repo.unfiltered()
# treat the file as text (skip the isbinary check)
if ui.configbool('fastannotate', 'forcetext'):
opts['text'] = True
# check if we need to do prefetch (client-side)
rev = opts.get('rev')
if util.safehasattr(repo, 'prefetchfastannotate') and rev is not None:
paths = list(_matchpaths(repo, rev, pats, opts))
repo.prefetchfastannotate(paths)
return orig(ui, repo, *pats, **opts)
def registercommand():
"""register the fastannotate command"""
name = '^fastannotate|fastblame|fa'
command(name, **fastannotatecommandargs)(fastannotate)
def wrapdefault():
"""wrap the default annotate command, to be aware of the protocol"""
extensions.wrapcommand(commands.table, 'annotate', _annotatewrapper)
@command('debugbuildannotatecache',
[('r', 'rev', '', _('build up to the specific revision'), _('REV'))
] + commands.walkopts,
_('[-r REV] FILE...'))
def debugbuildannotatecache(ui, repo, *pats, **opts):
"""incrementally build fastannotate cache up to REV for specified files
If REV is not specified, use the config 'fastannotate.mainbranch'.
If fastannotate.client is True, download the annotate cache from the
server. Otherwise, build the annotate cache locally.
The annotate cache will be built using the default diff and follow
options and lives in '.hg/fastannotate/default'.
"""
rev = opts.get('REV') or ui.config('fastannotate', 'mainbranch')
if not rev:
raise error.Abort(_('you need to provide a revision'),
hint=_('set fastannotate.mainbranch or use --rev'))
if ui.configbool('fastannotate', 'unfilteredrepo'):
repo = repo.unfiltered()
ctx = scmutil.revsingle(repo, rev)
m = scmutil.match(ctx, pats, opts)
paths = list(ctx.walk(m))
if util.safehasattr(repo, 'prefetchfastannotate'):
# client
if opts.get('REV'):
raise error.Abort(_('--rev cannot be used for client'))
repo.prefetchfastannotate(paths)
else:
# server, or full repo
for i, path in enumerate(paths):
ui.progress(_('building'), i, total=len(paths))
with facontext.annotatecontext(repo, path) as actx:
try:
if actx.isuptodate(rev):
continue
actx.annotate(rev, rev)
except (faerror.CannotReuseError, faerror.CorruptedFileError):
# the cache is broken (could happen with renaming so the
# file history gets invalidated). rebuild and try again.
ui.debug('fastannotate: %s: rebuilding broken cache\n'
% path)
actx.rebuild()
try:
actx.annotate(rev, rev)
except Exception as ex:
# possibly a bug, but should not stop us from building
# cache for other files.
ui.warn(_('fastannotate: %s: failed to '
'build cache: %r\n') % (path, ex))
# clear the progress bar
ui.write()

hgext/fastannotate/context.py

  • This file was added.
# Copyright 2016-present Facebook. All Rights Reserved.
#
# context: context needed to annotate a file
#
# 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
import collections
import contextlib
import hashlib
import os
from mercurial.i18n import _
from mercurial import (
error,
linelog as linelogmod,
lock as lockmod,
mdiff,
node,
pycompat,
scmutil,
util,
)
from . import (
error as faerror,
revmap as revmapmod,
)
# given path, get filelog, cached
@util.lrucachefunc
def _getflog(repo, path):
return repo.file(path)
# extracted from mercurial.context.basefilectx.annotate
def _parents(f, follow=True):
# Cut _descendantrev here to mitigate the penalty of lazy linkrev
# adjustment. Otherwise, p._adjustlinkrev() would walk changelog
# from the topmost introrev (= srcrev) down to p.linkrev() if it
# isn't an ancestor of the srcrev.
f._changeid
pl = f.parents()
# Don't return renamed parents if we aren't following.
if not follow:
pl = [p for p in pl if p.path() == f.path()]
# renamed filectx won't have a filelog yet, so set it
# from the cache to save time
for p in pl:
if not '_filelog' in p.__dict__:
p._filelog = _getflog(f._repo, p.path())
return pl
# extracted from mercurial.context.basefilectx.annotate. slightly modified
# so it takes a fctx instead of a pair of text and fctx.
def _decorate(fctx):
text = fctx.data()
linecount = text.count('\n')
if text and not text.endswith('\n'):
linecount += 1
return ([(fctx, i) for i in pycompat.xrange(linecount)], text)
# extracted from mercurial.context.basefilectx.annotate. slightly modified
# so it takes an extra "blocks" parameter calculated elsewhere, instead of
# calculating diff here.
def _pair(parent, child, blocks):
for (a1, a2, b1, b2), t in blocks:
# Changed blocks ('!') or blocks made only of blank lines ('~')
# belong to the child.
if t == '=':
child[0][b1:b2] = parent[0][a1:a2]
return child
# like scmutil.revsingle, but with lru cache, so their states (like manifests)
# could be reused
_revsingle = util.lrucachefunc(scmutil.revsingle)
def resolvefctx(repo, rev, path, resolverev=False, adjustctx=None):
"""(repo, str, str) -> fctx
get the filectx object from repo, rev, path, in an efficient way.
if resolverev is True, "rev" is a revision specified by the revset
language, otherwise "rev" is a nodeid, or a revision number that can
be consumed by repo.__getitem__.
if adjustctx is not None, the returned fctx will point to a changeset
that introduces the change (last modified the file). if adjustctx
is 'linkrev', trust the linkrev and do not adjust it. this is noticeably
faster for big repos but is incorrect for some cases.
"""
if resolverev and not isinstance(rev, int) and rev is not None:
ctx = _revsingle(repo, rev)
else:
ctx = repo[rev]
# If we don't need to adjust the linkrev, create the filectx using the
# changectx instead of using ctx[path]. This means it already has the
# changectx information, so blame -u will be able to look directly at the
# commitctx object instead of having to resolve it by going through the
# manifest. In a lazy-manifest world this can prevent us from downloading a
# lot of data.
if adjustctx is None:
# ctx.rev() is None means it's the working copy, which is a special
# case.
if ctx.rev() is None:
fctx = ctx[path]
else:
fctx = repo.filectx(path, changeid=ctx.rev())
else:
fctx = ctx[path]
if adjustctx == 'linkrev':
introrev = fctx.linkrev()
else:
introrev = fctx.introrev()
if introrev != ctx.rev():
fctx._changeid = introrev
fctx._changectx = repo[introrev]
return fctx
# like mercurial.store.encodedir, but use linelog suffixes: .m, .l, .lock
def encodedir(path):
return (path
.replace('.hg/', '.hg.hg/')
.replace('.l/', '.l.hg/')
.replace('.m/', '.m.hg/')
.replace('.lock/', '.lock.hg/'))
def hashdiffopts(diffopts):
diffoptstr = str(sorted(
(k, getattr(diffopts, k))
for k in mdiff.diffopts.defaults.iterkeys()
))
return hashlib.sha1(diffoptstr).hexdigest()[:6]
_defaultdiffopthash = hashdiffopts(mdiff.defaultopts)
class annotateopts(object):
"""like mercurial.mdiff.diffopts, but is for annotate
followrename: follow renames, like "hg annotate -f"
followmerge: follow p2 of a merge changeset, otherwise p2 is ignored
"""
defaults = {
'diffopts': None,
'followrename': True,
'followmerge': True,
}
def __init__(self, **opts):
for k, v in self.defaults.iteritems():
setattr(self, k, opts.get(k, v))
@util.propertycache
def shortstr(self):
"""represent opts in a short string, suitable for a directory name"""
result = ''
if not self.followrename:
result += 'r0'
if not self.followmerge:
result += 'm0'
if self.diffopts is not None:
assert isinstance(self.diffopts, mdiff.diffopts)
diffopthash = hashdiffopts(self.diffopts)
if diffopthash != _defaultdiffopthash:
result += 'i' + diffopthash
return result or 'default'
defaultopts = annotateopts()
class _annotatecontext(object):
"""do not use this class directly as it does not use lock to protect
writes. use "with annotatecontext(...)" instead.
"""
def __init__(self, repo, path, linelogpath, revmappath, opts):
self.repo = repo
self.ui = repo.ui
self.path = path
self.opts = opts
self.linelogpath = linelogpath
self.revmappath = revmappath
self._linelog = None
self._revmap = None
self._node2path = {} # {str: str}
@property
def linelog(self):
if self._linelog is None:
if os.path.exists(self.linelogpath):
with open(self.linelogpath, 'rb') as f:
try:
self._linelog = linelogmod.linelog.fromdata(f.read())
except linelogmod.LineLogError:
self._linelog = linelogmod.linelog()
else:
self._linelog = linelogmod.linelog()
return self._linelog
@property
def revmap(self):
if self._revmap is None:
self._revmap = revmapmod.revmap(self.revmappath)
return self._revmap
def close(self):
if self._revmap is not None:
self._revmap.flush()
self._revmap = None
if self._linelog is not None:
with open(self.linelogpath, 'wb') as f:
f.write(self._linelog.encode())
self._linelog = None
__del__ = close
def rebuild(self):
"""delete linelog and revmap, useful for rebuilding"""
self.close()
self._node2path.clear()
_unlinkpaths([self.revmappath, self.linelogpath])
@property
def lastnode(self):
"""return last node in revmap, or None if revmap is empty"""
if self._revmap is None:
# fast path, read revmap without loading its full content
return revmapmod.getlastnode(self.revmappath)
else:
return self._revmap.rev2hsh(self._revmap.maxrev)
def isuptodate(self, master, strict=True):
"""return True if the revmap / linelog is up-to-date, or the file
does not exist in the master revision. False otherwise.
it tries to be fast and could return false negatives, because of the
use of linkrev instead of introrev.
useful for both server and client to decide whether to update
fastannotate cache or not.
if strict is True, even if fctx exists in the revmap, but is not the
last node, isuptodate will return False. it's good for performance - no
expensive check was done.
if strict is False, if fctx exists in the revmap, this function may
return True. this is useful for the client to skip downloading the
cache if the client's master is behind the server's.
"""
lastnode = self.lastnode
try:
f = self._resolvefctx(master, resolverev=True)
# choose linkrev instead of introrev as the check is meant to be
# *fast*.
linknode = self.repo.changelog.node(f.linkrev())
if not strict and lastnode and linknode != lastnode:
# check if f.node() is in the revmap. note: this loads the
# revmap and can be slow.
return self.revmap.hsh2rev(linknode) is not None
# avoid resolving old manifest, or slow adjustlinkrev to be fast,
# false negatives are acceptable in this case.
return linknode == lastnode
except LookupError:
# master does not have the file, or the revmap is ahead
return True
def annotate(self, rev, master=None, showpath=False, showlines=False):
"""incrementally update the cache so it includes revisions in the main
branch till 'master'. and run annotate on 'rev', which may or may not be
included in the main branch.
if master is None, do not update linelog.
the first value returned is the annotate result, it is [(node, linenum)]
by default. [(node, linenum, path)] if showpath is True.
if showlines is True, a second value will be returned, it is a list of
corresponding line contents.
"""
# the fast path test requires commit hash, convert rev number to hash,
# so it may hit the fast path. note: in the "fctx" mode, the "annotate"
# command could give us a revision number even if the user passes a
# commit hash.
if isinstance(rev, int):
rev = node.hex(self.repo.changelog.node(rev))
# fast path: if rev is in the main branch already
directly, revfctx = self.canannotatedirectly(rev)
if directly:
if self.ui.debugflag:
self.ui.debug('fastannotate: %s: using fast path '
'(resolved fctx: %s)\n'
% (self.path, util.safehasattr(revfctx, 'node')))
return self.annotatedirectly(revfctx, showpath, showlines)
# resolve master
masterfctx = None
if master:
try:
masterfctx = self._resolvefctx(master, resolverev=True,
adjustctx=True)
except LookupError: # master does not have the file
pass
else:
if masterfctx in self.revmap: # no need to update linelog
masterfctx = None
# ... - @ <- rev (can be an arbitrary changeset,
# / not necessarily a descendant
# master -> o of master)
# |
# a merge -> o 'o': new changesets in the main branch
# |\ '#': revisions in the main branch that
# o * exist in linelog / revmap
# | . '*': changesets in side branches, or
# last master -> # . descendants of master
# | .
# # * joint: '#', and is a parent of a '*'
# |/
# a joint -> # ^^^^ --- side branches
# |
# ^ --- main branch (in linelog)
# these DFSes are similar to the traditional annotate algorithm.
# we cannot really reuse the code for perf reason.
# 1st DFS calculates merges, joint points, and needed.
# "needed" is a simple reference counting dict to free items in
# "hist", reducing its memory usage otherwise could be huge.
initvisit = [revfctx]
if masterfctx:
if masterfctx.rev() is None:
raise error.Abort(_('cannot update linelog to wdir()'),
hint=_('set fastannotate.mainbranch'))
initvisit.append(masterfctx)
visit = initvisit[:]
pcache = {}
needed = {revfctx: 1}
hist = {} # {fctx: ([(llrev or fctx, linenum)], text)}
while visit:
f = visit.pop()
if f in pcache or f in hist:
continue
if f in self.revmap: # in the old main branch, it's a joint
llrev = self.revmap.hsh2rev(f.node())
self.linelog.annotate(llrev)
result = self.linelog.annotateresult
hist[f] = (result, f.data())
continue
pl = self._parentfunc(f)
pcache[f] = pl
for p in pl:
needed[p] = needed.get(p, 0) + 1
if p not in pcache:
visit.append(p)
# 2nd (simple) DFS calculates new changesets in the main branch
# ('o' nodes in # the above graph), so we know when to update linelog.
newmainbranch = set()
f = masterfctx
while f and f not in self.revmap:
newmainbranch.add(f)
pl = pcache[f]
if pl:
f = pl[0]
else:
f = None
break
# f, if present, is the position where the last build stopped at, and
# should be the "master" last time. check to see if we can continue
# building the linelog incrementally. (we cannot if diverged)
if masterfctx is not None:
self._checklastmasterhead(f)
if self.ui.debugflag:
if newmainbranch:
self.ui.debug('fastannotate: %s: %d new changesets in the main'
' branch\n' % (self.path, len(newmainbranch)))
elif not hist: # no joints, no updates
self.ui.debug('fastannotate: %s: linelog cannot help in '
'annotating this revision\n' % self.path)
# prepare annotateresult so we can update linelog incrementally
self.linelog.annotate(self.linelog.maxrev)
# 3rd DFS does the actual annotate
visit = initvisit[:]
progress = 0
while visit:
f = visit[-1]
if f in hist:
visit.pop()
continue
ready = True
pl = pcache[f]
for p in pl:
if p not in hist:
ready = False
visit.append(p)
if not ready:
continue
visit.pop()
blocks = None # mdiff blocks, used for appending linelog
ismainbranch = (f in newmainbranch)
# curr is the same as the traditional annotate algorithm,
# if we only care about linear history (do not follow merge),
# then curr is not actually used.
assert f not in hist
curr = _decorate(f)
for i, p in enumerate(pl):
bs = list(self._diffblocks(hist[p][1], curr[1]))
if i == 0 and ismainbranch:
blocks = bs
curr = _pair(hist[p], curr, bs)
if needed[p] == 1:
del hist[p]
del needed[p]
else:
needed[p] -= 1
hist[f] = curr
del pcache[f]
if ismainbranch: # need to write to linelog
if not self.ui.quiet:
progress += 1
self.ui.progress(_('building cache'), progress,
total=len(newmainbranch))
bannotated = None
if len(pl) == 2 and self.opts.followmerge: # merge
bannotated = curr[0]
if blocks is None: # no parents, add an empty one
blocks = list(self._diffblocks('', curr[1]))
self._appendrev(f, blocks, bannotated)
elif showpath: # not append linelog, but we need to record path
self._node2path[f.node()] = f.path()
if progress: # clean progress bar
self.ui.write()
result = [
((self.revmap.rev2hsh(fr) if isinstance(fr, int) else fr.node()), l)
for fr, l in hist[revfctx][0]] # [(node, linenumber)]
return self._refineannotateresult(result, revfctx, showpath, showlines)
def canannotatedirectly(self, rev):
"""(str) -> bool, fctx or node.
return (True, f) if we can annotate without updating the linelog, pass
f to annotatedirectly.
return (False, f) if we need extra calculation. f is the fctx resolved
from rev.
"""
result = True
f = None
if not isinstance(rev, int) and rev is not None:
hsh = {20: bytes, 40: node.bin}.get(len(rev), lambda x: None)(rev)
if hsh is not None and (hsh, self.path) in self.revmap:
f = hsh
if f is None:
adjustctx = 'linkrev' if self._perfhack else True
f = self._resolvefctx(rev, adjustctx=adjustctx, resolverev=True)
result = f in self.revmap
if not result and self._perfhack:
# redo the resolution without perfhack - as we are going to
# do write operations, we need a correct fctx.
f = self._resolvefctx(rev, adjustctx=True, resolverev=True)
return result, f
def annotatealllines(self, rev, showpath=False, showlines=False):
"""(rev : str) -> [(node : str, linenum : int, path : str)]
the result has the same format with annotate, but include all (including
deleted) lines up to rev. call this after calling annotate(rev, ...) for
better performance and accuracy.
"""
revfctx = self._resolvefctx(rev, resolverev=True, adjustctx=True)
# find a chain from rev to anything in the mainbranch
if revfctx not in self.revmap:
chain = [revfctx]
a = ''
while True:
f = chain[-1]
pl = self._parentfunc(f)
if not pl:
break
if pl[0] in self.revmap:
a = pl[0].data()
break
chain.append(pl[0])
# both self.linelog and self.revmap is backed by filesystem. now
# we want to modify them but do not want to write changes back to
# files. so we create in-memory objects and copy them. it's like
# a "fork".
linelog = linelogmod.linelog()
linelog.copyfrom(self.linelog)
linelog.annotate(linelog.maxrev)
revmap = revmapmod.revmap()
revmap.copyfrom(self.revmap)
for f in reversed(chain):
b = f.data()
blocks = list(self._diffblocks(a, b))
self._doappendrev(linelog, revmap, f, blocks)
a = b
else:
# fastpath: use existing linelog, revmap as we don't write to them
linelog = self.linelog
revmap = self.revmap
lines = linelog.getalllines()
hsh = revfctx.node()
llrev = revmap.hsh2rev(hsh)
result = [(revmap.rev2hsh(r), l) for r, l in lines if r <= llrev]
# cannot use _refineannotateresult since we need custom logic for
# resolving line contents
if showpath:
result = self._addpathtoresult(result, revmap)
if showlines:
linecontents = self._resolvelines(result, revmap, linelog)
result = (result, linecontents)
return result
def _resolvelines(self, annotateresult, revmap, linelog):
"""(annotateresult) -> [line]. designed for annotatealllines.
this is probably the most inefficient code in the whole fastannotate
directory. but we have made a decision that the linelog does not
store line contents. so getting them requires random accesses to
the revlog data, since they can be many, it can be very slow.
"""
# [llrev]
revs = [revmap.hsh2rev(l[0]) for l in annotateresult]
result = [None] * len(annotateresult)
# {(rev, linenum): [lineindex]}
key2idxs = collections.defaultdict(list)
for i in pycompat.xrange(len(result)):
key2idxs[(revs[i], annotateresult[i][1])].append(i)
while key2idxs:
# find an unresolved line and its linelog rev to annotate
hsh = None
try:
for (rev, _linenum), idxs in key2idxs.iteritems():
if revmap.rev2flag(rev) & revmapmod.sidebranchflag:
continue
hsh = annotateresult[idxs[0]][0]
break
except StopIteration: # no more unresolved lines
return result
if hsh is None:
# the remaining key2idxs are not in main branch, resolving them
# using the hard way...
revlines = {}
for (rev, linenum), idxs in key2idxs.iteritems():
if rev not in revlines:
hsh = annotateresult[idxs[0]][0]
if self.ui.debugflag:
self.ui.debug('fastannotate: reading %s line #%d '
'to resolve lines %r\n'
% (node.short(hsh), linenum, idxs))
fctx = self._resolvefctx(hsh, revmap.rev2path(rev))
lines = mdiff.splitnewlines(fctx.data())
revlines[rev] = lines
for idx in idxs:
result[idx] = revlines[rev][linenum]
assert all(x is not None for x in result)
return result
# run the annotate and the lines should match to the file content
self.ui.debug('fastannotate: annotate %s to resolve lines\n'
% node.short(hsh))
linelog.annotate(rev)
fctx = self._resolvefctx(hsh, revmap.rev2path(rev))
annotated = linelog.annotateresult
lines = mdiff.splitnewlines(fctx.data())
if len(lines) != len(annotated):
raise faerror.CorruptedFileError('unexpected annotated lines')
# resolve lines from the annotate result
for i, line in enumerate(lines):
k = annotated[i]
if k in key2idxs:
for idx in key2idxs[k]:
result[idx] = line
del key2idxs[k]
return result
def annotatedirectly(self, f, showpath, showlines):
"""like annotate, but when we know that f is in linelog.
f can be either a 20-char str (node) or a fctx. this is for perf - in
the best case, the user provides a node and we don't need to read the
filelog or construct any filecontext.
"""
if isinstance(f, str):
hsh = f
else:
hsh = f.node()
llrev = self.revmap.hsh2rev(hsh)
if not llrev:
raise faerror.CorruptedFileError('%s is not in revmap'
% node.hex(hsh))
if (self.revmap.rev2flag(llrev) & revmapmod.sidebranchflag) != 0:
raise faerror.CorruptedFileError('%s is not in revmap mainbranch'
% node.hex(hsh))
self.linelog.annotate(llrev)
result = [(self.revmap.rev2hsh(r), l)
for r, l in self.linelog.annotateresult]
return self._refineannotateresult(result, f, showpath, showlines)
def _refineannotateresult(self, result, f, showpath, showlines):
"""add the missing path or line contents, they can be expensive.
f could be either node or fctx.
"""
if showpath:
result = self._addpathtoresult(result)
if showlines:
if isinstance(f, str): # f: node or fctx
llrev = self.revmap.hsh2rev(f)
fctx = self._resolvefctx(f, self.revmap.rev2path(llrev))
else:
fctx = f
lines = mdiff.splitnewlines(fctx.data())
if len(lines) != len(result): # linelog is probably corrupted
raise faerror.CorruptedFileError()
result = (result, lines)
return result
def _appendrev(self, fctx, blocks, bannotated=None):
self._doappendrev(self.linelog, self.revmap, fctx, blocks, bannotated)
def _diffblocks(self, a, b):
return mdiff.allblocks(a, b, self.opts.diffopts)
@staticmethod
def _doappendrev(linelog, revmap, fctx, blocks, bannotated=None):
"""append a revision to linelog and revmap"""
def getllrev(f):
"""(fctx) -> int"""
# f should not be a linelog revision
if isinstance(f, int):
raise error.ProgrammingError('f should not be an int')
# f is a fctx, allocate linelog rev on demand
hsh = f.node()
rev = revmap.hsh2rev(hsh)
if rev is None:
rev = revmap.append(hsh, sidebranch=True, path=f.path())
return rev
# append sidebranch revisions to revmap
siderevs = []
siderevmap = {} # node: int
if bannotated is not None:
for (a1, a2, b1, b2), op in blocks:
if op != '=':
# f could be either linelong rev, or fctx.
siderevs += [f for f, l in bannotated[b1:b2]
if not isinstance(f, int)]
siderevs = set(siderevs)
if fctx in siderevs: # mainnode must be appended seperately
siderevs.remove(fctx)
for f in siderevs:
siderevmap[f] = getllrev(f)
# the changeset in the main branch, could be a merge
llrev = revmap.append(fctx.node(), path=fctx.path())
siderevmap[fctx] = llrev
for (a1, a2, b1, b2), op in reversed(blocks):
if op == '=':
continue
if bannotated is None:
linelog.replacelines(llrev, a1, a2, b1, b2)
else:
blines = [((r if isinstance(r, int) else siderevmap[r]), l)
for r, l in bannotated[b1:b2]]
linelog.replacelines_vec(llrev, a1, a2, blines)
def _addpathtoresult(self, annotateresult, revmap=None):
"""(revmap, [(node, linenum)]) -> [(node, linenum, path)]"""
if revmap is None:
revmap = self.revmap
def _getpath(nodeid):
path = self._node2path.get(nodeid)
if path is None:
path = revmap.rev2path(revmap.hsh2rev(nodeid))
self._node2path[nodeid] = path
return path
return [(n, l, _getpath(n)) for n, l in annotateresult]
def _checklastmasterhead(self, fctx):
"""check if fctx is the master's head last time, raise if not"""
if fctx is None:
llrev = 0
else:
llrev = self.revmap.hsh2rev(fctx.node())
if not llrev:
raise faerror.CannotReuseError()
if self.linelog.maxrev != llrev:
raise faerror.CannotReuseError()
@util.propertycache
def _parentfunc(self):
"""-> (fctx) -> [fctx]"""
followrename = self.opts.followrename
followmerge = self.opts.followmerge
def parents(f):
pl = _parents(f, follow=followrename)
if not followmerge:
pl = pl[:1]
return pl
return parents
@util.propertycache
def _perfhack(self):
return self.ui.configbool('fastannotate', 'perfhack')
def _resolvefctx(self, rev, path=None, **kwds):
return resolvefctx(self.repo, rev, (path or self.path), **kwds)
def _unlinkpaths(paths):
"""silent, best-effort unlink"""
for path in paths:
try:
util.unlink(path)
except OSError:
pass
class pathhelper(object):
"""helper for getting paths for lockfile, linelog and revmap"""
def __init__(self, repo, path, opts=defaultopts):
# different options use different directories
self._vfspath = os.path.join('fastannotate',
opts.shortstr, encodedir(path))
self._repo = repo
@property
def dirname(self):
return os.path.dirname(self._repo.vfs.join(self._vfspath))
@property
def linelogpath(self):
return self._repo.vfs.join(self._vfspath + '.l')
def lock(self):
return lockmod.lock(self._repo.vfs, self._vfspath + '.lock')
@contextlib.contextmanager
def _lockflock(self):
"""the same as 'lock' but use flock instead of lockmod.lock, to avoid
creating temporary symlinks."""
import fcntl
lockpath = self.linelogpath
util.makedirs(os.path.dirname(lockpath))
lockfd = os.open(lockpath, os.O_RDONLY | os.O_CREAT, 0o664)
fcntl.flock(lockfd, fcntl.LOCK_EX)
try:
yield
finally:
fcntl.flock(lockfd, fcntl.LOCK_UN)
os.close(lockfd)
indygregUnsubmitted
Not Done

This wants to move to a utils module somewhere.

indygreg: This wants to move to a `utils` module somewhere.
@property
def revmappath(self):
return self._repo.vfs.join(self._vfspath + '.m')
@contextlib.contextmanager
def annotatecontext(repo, path, opts=defaultopts, rebuild=False):
"""context needed to perform (fast) annotate on a file
an annotatecontext of a single file consists of two structures: the
linelog and the revmap. this function takes care of locking. only 1
process is allowed to write that file's linelog and revmap at a time.
when something goes wrong, this function will assume the linelog and the
revmap are in a bad state, and remove them from disk.
use this function in the following way:
with annotatecontext(...) as actx:
actx. ....
"""
helper = pathhelper(repo, path, opts)
util.makedirs(helper.dirname)
revmappath = helper.revmappath
linelogpath = helper.linelogpath
actx = None
try:
with helper.lock():
actx = _annotatecontext(repo, path, linelogpath, revmappath, opts)
if rebuild:
actx.rebuild()
yield actx
except Exception:
if actx is not None:
actx.rebuild()
repo.ui.debug('fastannotate: %s: cache broken and deleted\n' % path)
raise
finally:
if actx is not None:
actx.close()
def fctxannotatecontext(fctx, follow=True, diffopts=None, rebuild=False):
"""like annotatecontext but get the context from a fctx. convenient when
used in fctx.annotate
"""
repo = fctx._repo
path = fctx._path
if repo.ui.configbool('fastannotate', 'forcefollow', True):
follow = True
aopts = annotateopts(diffopts=diffopts, followrename=follow)
return annotatecontext(repo, path, aopts, rebuild)

hgext/fastannotate/error.py

  • This file was added.
# Copyright 2016-present Facebook. All Rights Reserved.
#
# error: errors used in fastannotate
#
# 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
class CorruptedFileError(Exception):
pass
class CannotReuseError(Exception):
"""cannot reuse or update the cache incrementally"""

hgext/fastannotate/formatter.py

  • This file was added.
# Copyright 2016-present Facebook. All Rights Reserved.
#
# format: defines the format used to output annotate result
#
indygregUnsubmitted
Not Done

I'm sure @yuja has opinions about this file.

indygreg: I'm sure @yuja has opinions about this file.
# 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 (
encoding,
node,
pycompat,
templatefilters,
util,
)
from mercurial.utils import (
dateutil,
)
# imitating mercurial.commands.annotate, not using the vanilla formatter since
# the data structures are a bit different, and we have some fast paths.
class defaultformatter(object):
"""the default formatter that does leftpad and support some common flags"""
def __init__(self, ui, repo, opts):
self.ui = ui
self.opts = opts
if ui.quiet:
datefunc = dateutil.shortdate
else:
datefunc = dateutil.datestr
datefunc = util.cachefunc(datefunc)
getctx = util.cachefunc(lambda x: repo[x[0]])
hexfunc = self._hexfunc
# special handling working copy "changeset" and "rev" functions
if self.opts.get('rev') == 'wdir()':
orig = hexfunc
hexfunc = lambda x: None if x is None else orig(x)
wnode = hexfunc(repo[None].p1().node()) + '+'
wrev = str(repo[None].p1().rev())
wrevpad = ''
if not opts.get('changeset'): # only show + if changeset is hidden
wrev += '+'
wrevpad = ' '
revenc = lambda x: wrev if x is None else str(x) + wrevpad
csetenc = lambda x: wnode if x is None else str(x) + ' '
else:
revenc = csetenc = str
# opt name, separator, raw value (for json/plain), encoder (for plain)
opmap = [('user', ' ', lambda x: getctx(x).user(), ui.shortuser),
('number', ' ', lambda x: getctx(x).rev(), revenc),
('changeset', ' ', lambda x: hexfunc(x[0]), csetenc),
('date', ' ', lambda x: getctx(x).date(), datefunc),
('file', ' ', lambda x: x[2], str),
('line_number', ':', lambda x: x[1] + 1, str)]
fieldnamemap = {'number': 'rev', 'changeset': 'node'}
funcmap = [(get, sep, fieldnamemap.get(op, op), enc)
for op, sep, get, enc in opmap
if opts.get(op)]
# no separator for first column
funcmap[0] = list(funcmap[0])
funcmap[0][1] = ''
self.funcmap = funcmap
def write(self, annotatedresult, lines=None, existinglines=None):
"""(annotateresult, [str], set([rev, linenum])) -> None. write output.
annotateresult can be [(node, linenum, path)], or [(node, linenum)]
"""
pieces = [] # [[str]]
maxwidths = [] # [int]
# calculate padding
for f, sep, name, enc in self.funcmap:
l = [enc(f(x)) for x in annotatedresult]
pieces.append(l)
if name in ['node', 'date']: # node and date has fixed size
l = l[:1]
widths = map(encoding.colwidth, set(l))
maxwidth = (max(widths) if widths else 0)
maxwidths.append(maxwidth)
# buffered output
result = ''
for i in pycompat.xrange(len(annotatedresult)):
for j, p in enumerate(pieces):
sep = self.funcmap[j][1]
padding = ' ' * (maxwidths[j] - len(p[i]))
result += sep + padding + p[i]
if lines:
if existinglines is None:
result += ': ' + lines[i]
else: # extra formatting showing whether a line exists
key = (annotatedresult[i][0], annotatedresult[i][1])
if key in existinglines:
result += ': ' + lines[i]
else:
result += ': ' + self.ui.label('-' + lines[i],
'diff.deleted')
if result[-1] != '\n':
result += '\n'
self.ui.write(result)
@util.propertycache
def _hexfunc(self):
if self.ui.debugflag or self.opts.get('long_hash'):
return node.hex
else:
return node.short
def end(self):
pass
class jsonformatter(defaultformatter):
def __init__(self, ui, repo, opts):
super(jsonformatter, self).__init__(ui, repo, opts)
self.ui.write('[')
self.needcomma = False
def write(self, annotatedresult, lines=None, existinglines=None):
if annotatedresult:
self._writecomma()
pieces = [(name, map(f, annotatedresult))
for f, sep, name, enc in self.funcmap]
if lines is not None:
pieces.append(('line', lines))
pieces.sort()
seps = [','] * len(pieces[:-1]) + ['']
result = ''
lasti = len(annotatedresult) - 1
for i in pycompat.xrange(len(annotatedresult)):
result += '\n {\n'
for j, p in enumerate(pieces):
k, vs = p
result += (' "%s": %s%s\n'
% (k, templatefilters.json(vs[i], paranoid=False),
seps[j]))
result += ' }%s' % ('' if i == lasti else ',')
if lasti >= 0:
self.needcomma = True
self.ui.write(result)
def _writecomma(self):
if self.needcomma:
self.ui.write(',')
self.needcomma = False
@util.propertycache
def _hexfunc(self):
return node.hex
def end(self):
self.ui.write('\n]\n')

hgext/fastannotate/protocol.py

  • This file was added.
# Copyright 2016-present Facebook. All Rights Reserved.
#
# protocol: logic for a server providing fastannotate support
#
# 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
import contextlib
import os
from mercurial.i18n import _
from mercurial import (
error,
extensions,
hg,
localrepo,
scmutil,
wireprotov1peer,
wireprotov1server,
)
from . import context
# common
def _getmaster(ui):
"""get the mainbranch, and enforce it is set"""
master = ui.config('fastannotate', 'mainbranch')
if not master:
raise error.Abort(_('fastannotate.mainbranch is required '
'for both the client and the server'))
return master
# server-side
def _capabilities(orig, repo, proto):
result = orig(repo, proto)
result.append('getannotate')
return result
def _getannotate(repo, proto, path, lastnode):
# output:
# FILE := vfspath + '\0' + str(size) + '\0' + content
# OUTPUT := '' | FILE + OUTPUT
indygregUnsubmitted
Not Done

The use of \0 means we're a binary format. I'd prefer that we not e.g. format integers to strings if we're using binary exchange. Maybe throw some CBOR at the problem?

indygreg: The use of `\0` means we're a binary format. I'd prefer that we not e.g. format integers to…
result = ''
buildondemand = repo.ui.configbool('fastannotate', 'serverbuildondemand',
True)
with context.annotatecontext(repo, path) as actx:
if buildondemand:
# update before responding to the client
master = _getmaster(repo.ui)
try:
if not actx.isuptodate(master):
actx.annotate(master, master)
except Exception:
# non-fast-forward move or corrupted. rebuild automically.
actx.rebuild()
try:
actx.annotate(master, master)
except Exception:
actx.rebuild() # delete files
finally:
# although the "with" context will also do a close/flush, we
# need to do it early so we can send the correct respond to
# client.
actx.close()
# send back the full content of revmap and linelog, in the future we
# may want to do some rsync-like fancy updating.
# the lastnode check is not necessary if the client and the server
# agree where the main branch is.
if actx.lastnode != lastnode:
for p in [actx.revmappath, actx.linelogpath]:
if not os.path.exists(p):
continue
content = ''
with open(p, 'rb') as f:
content = f.read()
vfsbaselen = len(repo.vfs.base + '/')
relpath = p[vfsbaselen:]
result += '%s\0%s\0%s' % (relpath, len(content), content)
return result
def _registerwireprotocommand():
if 'getannotate' in wireprotov1server.commands:
return
wireprotov1server.wireprotocommand(
'getannotate', 'path lastnode')(_getannotate)
def serveruisetup(ui):
_registerwireprotocommand()
extensions.wrapfunction(wireprotov1server, '_capabilities', _capabilities)
# client-side
def _parseresponse(payload):
result = {}
i = 0
l = len(payload) - 1
state = 0 # 0: vfspath, 1: size
vfspath = size = ''
while i < l:
ch = payload[i]
if ch == '\0':
if state == 1:
result[vfspath] = buffer(payload, i + 1, int(size))
i += int(size)
state = 0
vfspath = size = ''
elif state == 0:
state = 1
else:
if state == 1:
size += ch
elif state == 0:
vfspath += ch
i += 1
return result
def peersetup(ui, peer):
class fastannotatepeer(peer.__class__):
@wireprotov1peer.batchable
def getannotate(self, path, lastnode=None):
if not self.capable('getannotate'):
ui.warn(_('remote peer cannot provide annotate cache\n'))
yield None, None
else:
args = {'path': path, 'lastnode': lastnode or ''}
f = wireprotov1peer.future()
yield args, f
yield _parseresponse(f.value)
peer.__class__ = fastannotatepeer
@contextlib.contextmanager
def annotatepeer(repo):
ui = repo.ui
# fileservice belongs to remotefilelog
fileservice = getattr(repo, 'fileservice', None)
sharepeer = ui.configbool('fastannotate', 'clientsharepeer', True)
indygregUnsubmitted
Not Done

A lot of this function can be deleted since we don't support remotefilelog.

indygreg: A lot of this function can be deleted since we don't support remotefilelog.
if sharepeer and fileservice:
ui.debug('fastannotate: using remotefilelog connection pool\n')
conn = repo.connectionpool.get(repo.fallbackpath)
peer = conn.peer
stolen = True
else:
remotepath = ui.expandpath(
ui.config('fastannotate', 'remotepath', 'default'))
peer = hg.peer(ui, {}, remotepath)
stolen = False
try:
# Note: fastannotate requests should never trigger a remotefilelog
# "getfiles" request, because "getfiles" puts the stream into a state
# that does not exit. See "clientfetch": it does "getannotate" before
# any hg stuff that could potentially trigger a "getfiles".
yield peer
finally:
if not stolen:
for i in ['close', 'cleanup']:
getattr(peer, i, lambda: None)()
else:
conn.__exit__(None, None, None)
def clientfetch(repo, paths, lastnodemap=None, peer=None):
"""download annotate cache from the server for paths"""
if not paths:
return
if peer is None:
with annotatepeer(repo) as peer:
return clientfetch(repo, paths, lastnodemap, peer)
if lastnodemap is None:
lastnodemap = {}
ui = repo.ui
results = []
with peer.commandexecutor() as batcher:
ui.debug('fastannotate: requesting %d files\n' % len(paths))
for p in paths:
results.append(batcher.callcommand(
'getannotate',
{'path': p, 'lastnode':lastnodemap.get(p)}))
indygregUnsubmitted
Not Done

Ideally this would call a method directly instead of going through callcommand(). (I would like to remove callcommand() in the future.)

indygreg: Ideally this would call a method directly instead of going through `callcommand()`. (I would…
ui.debug('fastannotate: server returned\n')
for result in results:
for path, content in result.result().iteritems():
# ignore malicious paths
if not path.startswith('fastannotate/') or '/../' in (path + '/'):
ui.debug('fastannotate: ignored malicious path %s\n' % path)
continue
if ui.debugflag:
ui.debug('fastannotate: writing %d bytes to %s\n'
% (len(content), path))
repo.vfs.makedirs(os.path.dirname(path))
with repo.vfs(path, 'wb') as f:
f.write(content)
def _filterfetchpaths(repo, paths):
"""return a subset of paths whose history is long and need to fetch linelog
from the server. works with remotefilelog and non-remotefilelog repos.
"""
threshold = repo.ui.configint('fastannotate', 'clientfetchthreshold', 10)
if threshold <= 0:
return paths
master = repo.ui.config('fastannotate', 'mainbranch') or 'default'
indygregUnsubmitted
Not Done

Perhaps the default value for mainbranch should be default?

indygreg: Perhaps the default value for `mainbranch` should be `default`?
if 'remotefilelog' in repo.requirements:
ctx = scmutil.revsingle(repo, master)
indygregUnsubmitted
Not Done

Nuke it. Then inline the lambda so it isn't abstracted.

indygreg: Nuke it. Then inline the lambda so it isn't abstracted.
f = lambda path: len(ctx[path].ancestormap())
else:
f = lambda path: len(repo.file(path))
result = []
for path in paths:
try:
if f(path) >= threshold:
result.append(path)
except Exception: # file not found etc.
result.append(path)
return result
def localreposetup(ui, repo):
class fastannotaterepo(repo.__class__):
def prefetchfastannotate(self, paths, peer=None):
master = _getmaster(self.ui)
needupdatepaths = []
lastnodemap = {}
try:
for path in _filterfetchpaths(self, paths):
with context.annotatecontext(self, path) as actx:
if not actx.isuptodate(master, strict=False):
needupdatepaths.append(path)
lastnodemap[path] = actx.lastnode
if needupdatepaths:
clientfetch(self, needupdatepaths, lastnodemap, peer)
except Exception as ex:
# could be directory not writable or so, not fatal
self.ui.debug('fastannotate: prefetch failed: %r\n' % ex)
repo.__class__ = fastannotaterepo
def clientreposetup(ui, repo):
_registerwireprotocommand()
if isinstance(repo, localrepo.localrepository):
localreposetup(ui, repo)
if peersetup not in hg.wirepeersetupfuncs:
hg.wirepeersetupfuncs.append(peersetup)

hgext/fastannotate/revmap.py

  • This file was added.
# Copyright 2016-present Facebook. All Rights Reserved.
#
# revmap: trivial hg hash - linelog rev bidirectional map
#
# 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
import bisect
import os
import struct
from mercurial.node import hex
from mercurial import (
error as hgerror,
pycompat,
)
from . import error
# the revmap file format is straightforward:
#
# 8 bytes: header
# 1 byte : flag for linelog revision 1
indygregUnsubmitted
Not Done

Nit: I'd name this magic instead of header since that appears to be what it is (REVMAP1\0).

indygreg: Nit: I'd name this `magic` instead of `header` since that appears to be what it is…
# ? bytes: (optional) '\0'-terminated path string
# only exists if (flag & renameflag) != 0
# 20 bytes: hg hash for linelog revision 1
# 1 byte : flag for linelog revision 2
# ? bytes: (optional) '\0'-terminated path string
# 20 bytes: hg hash for linelog revision 2
# ....
indygregUnsubmitted
Not Done

I generally like packing all the constant-length fields first then putting variable-length fields afterwards. That way you can do one read to get all the known data then do another read to get the variable-length data.

Also, \0 terminated paths mean the reader has to scan. It is better to encode the length so that scan can be avoided.

indygreg: I generally like packing all the constant-length fields first then putting variable-length…
#
# the implementation is kinda stupid: __init__ loads the whole revmap.
# no laziness. benchmark shows loading 10000 revisions is about 0.015
# seconds, which looks enough for our use-case. if this implementation
# becomes a bottleneck, we can change it to lazily read the file
# from the end.
# whether the changeset is in the side branch. i.e. not in the linear main
# branch but only got referenced by lines in merge changesets.
sidebranchflag = 1
# whether the changeset changes the file path (ie. is a rename)
renameflag = 2
# len(mercurial.node.nullid)
_hshlen = 20
class revmap(object):
"""trivial hg bin hash - linelog rev bidirectional map
also stores a flag (uint8) for each revision, and track renames.
"""
HEADER = b'REVMAP1\0'
def __init__(self, path=None):
"""create or load the revmap, optionally associate to a file
if path is None, the revmap is entirely in-memory. the caller is
responsible for locking. concurrent writes to a same file is unsafe.
the caller needs to make sure one file is associated to at most one
revmap object at a time."""
self.path = path
self._rev2hsh = [None]
self._rev2flag = [None]
self._hsh2rev = {}
# since rename does not happen frequently, do not store path for every
# revision. self._renamerevs can be used for bisecting.
self._renamerevs = [0]
self._renamepaths = ['']
self._lastmaxrev = -1
if path:
if os.path.exists(path):
self._load()
else:
# write the header so "append" can do incremental updates
self.flush()
def copyfrom(self, rhs):
"""copy the map data from another revmap. do not affect self.path"""
self._rev2hsh = rhs._rev2hsh[:]
self._rev2flag = rhs._rev2flag[:]
self._hsh2rev = rhs._hsh2rev.copy()
self._renamerevs = rhs._renamerevs[:]
self._renamepaths = rhs._renamepaths[:]
self._lastmaxrev = -1
@property
def maxrev(self):
"""return max linelog revision number"""
return len(self._rev2hsh) - 1
def append(self, hsh, sidebranch=False, path=None, flush=False):
"""add a binary hg hash and return the mapped linelog revision.
if flush is True, incrementally update the file.
"""
if hsh in self._hsh2rev:
raise error.CorruptedFileError('%r is in revmap already' % hex(hsh))
if len(hsh) != _hshlen:
raise hgerror.ProgrammingError('hsh must be %d-char long' % _hshlen)
idx = len(self._rev2hsh)
flag = 0
if sidebranch:
flag |= sidebranchflag
if path is not None and path != self._renamepaths[-1]:
flag |= renameflag
self._renamerevs.append(idx)
self._renamepaths.append(path)
self._rev2hsh.append(hsh)
self._rev2flag.append(flag)
self._hsh2rev[hsh] = idx
if flush:
self.flush()
return idx
def rev2hsh(self, rev):
"""convert linelog revision to hg hash. return None if not found."""
if rev > self.maxrev or rev < 0:
return None
return self._rev2hsh[rev]
def rev2flag(self, rev):
"""get the flag (uint8) for a given linelog revision.
return None if revision does not exist.
"""
if rev > self.maxrev or rev < 0:
return None
return self._rev2flag[rev]
def rev2path(self, rev):
"""get the path for a given linelog revision.
return None if revision does not exist.
"""
if rev > self.maxrev or rev < 0:
return None
idx = bisect.bisect_right(self._renamerevs, rev) - 1
return self._renamepaths[idx]
def hsh2rev(self, hsh):
"""convert hg hash to linelog revision. return None if not found."""
return self._hsh2rev.get(hsh)
def clear(self, flush=False):
"""make the map empty. if flush is True, write to disk"""
# rev 0 is reserved, real rev starts from 1
self._rev2hsh = [None]
self._rev2flag = [None]
self._hsh2rev = {}
self._rev2path = ['']
self._lastmaxrev = -1
if flush:
self.flush()
def flush(self):
"""write the state down to the file"""
if not self.path:
return
if self._lastmaxrev == -1: # write the entire file
with open(self.path, 'wb') as f:
f.write(self.HEADER)
for i in pycompat.xrange(1, len(self._rev2hsh)):
self._writerev(i, f)
else: # append incrementally
with open(self.path, 'ab') as f:
for i in pycompat.xrange(self._lastmaxrev + 1,
len(self._rev2hsh)):
self._writerev(i, f)
self._lastmaxrev = self.maxrev
def _load(self):
"""load state from file"""
if not self.path:
return
# use local variables in a loop. CPython uses LOAD_FAST for them,
# which is faster than both LOAD_CONST and LOAD_GLOBAL.
flaglen = 1
hshlen = _hshlen
with open(self.path, 'rb') as f:
if f.read(len(self.HEADER)) != self.HEADER:
raise error.CorruptedFileError()
self.clear(flush=False)
while True:
buf = f.read(flaglen)
if not buf:
break
flag = ord(buf)
rev = len(self._rev2hsh)
if flag & renameflag:
path = self._readcstr(f)
self._renamerevs.append(rev)
self._renamepaths.append(path)
hsh = f.read(hshlen)
if len(hsh) != hshlen:
raise error.CorruptedFileError()
self._hsh2rev[hsh] = rev
self._rev2flag.append(flag)
self._rev2hsh.append(hsh)
self._lastmaxrev = self.maxrev
def _writerev(self, rev, f):
"""append a revision data to file"""
flag = self._rev2flag[rev]
hsh = self._rev2hsh[rev]
f.write(struct.pack('B', flag))
if flag & renameflag:
path = self.rev2path(rev)
if path is None:
raise error.CorruptedFileError('cannot find path for %s' % rev)
f.write(path + '\0')
f.write(hsh)
@staticmethod
def _readcstr(f):
"""read a C-language-like '\0'-terminated string"""
buf = ''
while True:
ch = f.read(1)
if not ch: # unexpected eof
raise error.CorruptedFileError()
if ch == '\0':
break
buf += ch
return buf
def __contains__(self, f):
"""(fctx or (node, path)) -> bool.
test if (node, path) is in the map, and is not in a side branch.
f can be either a tuple of (node, path), or a fctx.
"""
if isinstance(f, tuple): # f: (node, path)
hsh, path = f
else: # f: fctx
hsh, path = f.node(), f.path()
rev = self.hsh2rev(hsh)
if rev is None:
return False
if path is not None and path != self.rev2path(rev):
return False
return (self.rev2flag(rev) & sidebranchflag) == 0
def getlastnode(path):
"""return the last hash in a revmap, without loading its full content.
this is equivalent to `m = revmap(path); m.rev2hsh(m.maxrev)`, but faster.
"""
hsh = None
try:
with open(path, 'rb') as f:
f.seek(-_hshlen, 2)
if f.tell() > len(revmap.HEADER):
hsh = f.read(_hshlen)
except IOError:
pass
return hsh

hgext/fastannotate/support.py

  • This file was added.
# Copyright 2016-present Facebook. All Rights Reserved.
#
# support: fastannotate support for hgweb, and filectx
#
# 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 (
context as hgcontext,
dagop,
extensions,
hgweb,
patch,
util,
)
from . import (
context,
revmap,
)
class _lazyfctx(object):
"""delegates to fctx but do not construct fctx when unnecessary"""
def __init__(self, repo, node, path):
self._node = node
self._path = path
self._repo = repo
def node(self):
return self._node
def path(self):
return self._path
@util.propertycache
def _fctx(self):
return context.resolvefctx(self._repo, self._node, self._path)
def __getattr__(self, name):
return getattr(self._fctx, name)
def _convertoutputs(repo, annotated, contents):
"""convert fastannotate outputs to vanilla annotate format"""
# fastannotate returns: [(nodeid, linenum, path)], [linecontent]
# convert to what fctx.annotate returns: [annotateline]
results = []
fctxmap = {}
annotateline = dagop.annotateline
for i, (hsh, linenum, path) in enumerate(annotated):
if (hsh, path) not in fctxmap:
fctxmap[(hsh, path)] = _lazyfctx(repo, hsh, path)
# linenum: the user wants 1-based, we have 0-based.
lineno = linenum + 1
fctx = fctxmap[(hsh, path)]
line = contents[i]
results.append(annotateline(fctx=fctx, lineno=lineno, text=line))
return results
def _getmaster(fctx):
"""(fctx) -> str"""
return fctx._repo.ui.config('fastannotate', 'mainbranch') or 'default'
def _doannotate(fctx, follow=True, diffopts=None):
"""like the vanilla fctx.annotate, but do it via fastannotate, and make
the output format compatible with the vanilla fctx.annotate.
may raise Exception, and always return line numbers.
"""
master = _getmaster(fctx)
annotated = contents = None
with context.fctxannotatecontext(fctx, follow, diffopts) as ac:
try:
annotated, contents = ac.annotate(fctx.rev(), master=master,
showpath=True, showlines=True)
except Exception:
ac.rebuild() # try rebuild once
fctx._repo.ui.debug('fastannotate: %s: rebuilding broken cache\n'
% fctx._path)
try:
annotated, contents = ac.annotate(fctx.rev(), master=master,
showpath=True, showlines=True)
except Exception:
raise
assert annotated and contents
return _convertoutputs(fctx._repo, annotated, contents)
def _hgwebannotate(orig, fctx, ui):
diffopts = patch.difffeatureopts(ui, untrusted=True,
section='annotate', whitespace=True)
return _doannotate(fctx, diffopts=diffopts)
def _fctxannotate(orig, self, follow=False, linenumber=False, skiprevs=None,
diffopts=None):
if skiprevs:
# skiprevs is not supported yet
return orig(self, follow, linenumber, skiprevs=skiprevs,
diffopts=diffopts)
try:
return _doannotate(self, follow, diffopts)
except Exception as ex:
self._repo.ui.debug('fastannotate: falling back to the vanilla '
'annotate: %r\n' % ex)
return orig(self, follow=follow, skiprevs=skiprevs,
diffopts=diffopts)
def _remotefctxannotate(orig, self, follow=False, skiprevs=None, diffopts=None):
# skipset: a set-like used to test if a fctx needs to be downloaded
skipset = None
with context.fctxannotatecontext(self, follow, diffopts) as ac:
skipset = revmap.revmap(ac.revmappath)
return orig(self, follow, skiprevs=skiprevs, diffopts=diffopts,
prefetchskip=skipset)
def replacehgwebannotate():
extensions.wrapfunction(hgweb.webutil, 'annotate', _hgwebannotate)
def replacefctxannotate():
extensions.wrapfunction(hgcontext.basefilectx, 'annotate', _fctxannotate)
def replaceremotefctxannotate():
try:
r = extensions.find('remotefilelog')
except KeyError:
return
else:
extensions.wrapfunction(r.remotefilectx.remotefilectx, 'annotate',
_remotefctxannotate)

setup.py

'mercurial.thirdparty.cbor', 'mercurial.thirdparty.cbor',
'mercurial.thirdparty.cbor.cbor2', 'mercurial.thirdparty.cbor.cbor2',
'mercurial.thirdparty.concurrent', 'mercurial.thirdparty.concurrent',
'mercurial.thirdparty.concurrent.futures', 'mercurial.thirdparty.concurrent.futures',
'mercurial.thirdparty.zope', 'mercurial.thirdparty.zope',
'mercurial.thirdparty.zope.interface', 'mercurial.thirdparty.zope.interface',
'mercurial.utils', 'mercurial.utils',
'hgext', 'hgext.convert', 'hgext.fsmonitor', 'hgext', 'hgext.convert', 'hgext.fsmonitor',
'hgext.fastannotate',
'hgext.fsmonitor.pywatchman', 'hgext.fsmonitor.pywatchman',
'hgext.infinitepush', 'hgext.infinitepush',
'hgext.highlight', 'hgext.highlight',
'hgext.largefiles', 'hgext.lfs', 'hgext.narrow', 'hgext.largefiles', 'hgext.lfs', 'hgext.narrow',
'hgext.zeroconf', 'hgext3rd', 'hgext.zeroconf', 'hgext3rd',
'hgdemandimport'] 'hgdemandimport']
common_depends = ['mercurial/bitmanipulation.h', common_depends = ['mercurial/bitmanipulation.h',

tests/test-fastannotate-corrupt.t

  • This file was added.
$ cat >> $HGRCPATH << EOF
> [extensions]
> fastannotate=
> EOF
$ hg init repo
$ cd repo
$ for i in 0 1 2 3 4; do
> echo $i >> a
> echo $i >> b
> hg commit -A -m $i a b
> done
use the "debugbuildannotatecache" command to build annotate cache at rev 0
$ hg debugbuildannotatecache --debug --config fastannotate.mainbranch=0
fastannotate: a: 1 new changesets in the main branch
fastannotate: b: 1 new changesets in the main branch
"debugbuildannotatecache" should work with broken cache (and other files would
be built without being affected). note: linelog being broken is only noticed
when we try to append to it.
$ echo 'CORRUPT!' >> .hg/fastannotate/default/a.m
$ hg debugbuildannotatecache --debug --config fastannotate.mainbranch=1
fastannotate: a: rebuilding broken cache
fastannotate: a: 2 new changesets in the main branch
fastannotate: b: 1 new changesets in the main branch
$ echo 'CANNOT REUSE!' > .hg/fastannotate/default/a.l
$ hg debugbuildannotatecache --debug --config fastannotate.mainbranch=2
fastannotate: a: rebuilding broken cache
fastannotate: a: 3 new changesets in the main branch
fastannotate: b: 1 new changesets in the main branch
$ rm .hg/fastannotate/default/a.m
$ hg debugbuildannotatecache --debug --config fastannotate.mainbranch=3
fastannotate: a: rebuilding broken cache
fastannotate: a: 4 new changesets in the main branch
fastannotate: b: 1 new changesets in the main branch
$ rm .hg/fastannotate/default/a.l
$ hg debugbuildannotatecache --debug --config fastannotate.mainbranch=3
$ hg debugbuildannotatecache --debug --config fastannotate.mainbranch=4
fastannotate: a: rebuilding broken cache
fastannotate: a: 5 new changesets in the main branch
fastannotate: b: 1 new changesets in the main branch
"fastannotate" should deal with file corruption as well
$ rm -rf .hg/fastannotate
$ hg fastannotate --debug -r 0 a
fastannotate: a: 1 new changesets in the main branch
0: 0
$ echo 'CORRUPT!' >> .hg/fastannotate/default/a.m
$ hg fastannotate --debug -r 0 a
fastannotate: a: cache broken and deleted
fastannotate: a: 1 new changesets in the main branch
0: 0
$ echo 'CORRUPT!' > .hg/fastannotate/default/a.l
$ hg fastannotate --debug -r 1 a
fastannotate: a: cache broken and deleted
fastannotate: a: 2 new changesets in the main branch
0: 0
1: 1
$ rm .hg/fastannotate/default/a.l
$ hg fastannotate --debug -r 1 a
fastannotate: a: using fast path (resolved fctx: True)
fastannotate: a: cache broken and deleted
fastannotate: a: 2 new changesets in the main branch
0: 0
1: 1
$ rm .hg/fastannotate/default/a.m
$ hg fastannotate --debug -r 2 a
fastannotate: a: cache broken and deleted
fastannotate: a: 3 new changesets in the main branch
0: 0
1: 1
2: 2

tests/test-fastannotate-diffopts.t

  • This file was added.
$ cat >> $HGRCPATH << EOF
> [extensions]
> fastannotate=
> EOF
$ hg init repo
$ cd repo
changes to whitespaces
$ cat >> a << EOF
> 1
>
>
> 2
> EOF
$ hg commit -qAm '1'
$ cat > a << EOF
> 1
>
> 2
>
>
> 3
> EOF
$ hg commit -m 2
$ hg fastannotate -wB a
0: 1
0:
1: 2
0:
1:
1: 3

tests/test-fastannotate-hg.t

  • This file was added.
(this file is backported from core hg tests/test-annotate.t)
$ cat >> $HGRCPATH << EOF
> [diff]
> git=1
> [extensions]
> fastannotate=
> [fastannotate]
> modes=fctx
> forcefollow=False
> mainbranch=.
> EOF
$ HGMERGE=true; export HGMERGE
init
$ hg init repo
$ cd repo
commit
$ echo 'a' > a
$ hg ci -A -m test -u nobody -d '1 0'
adding a
annotate -c
$ hg annotate -c a
8435f90966e4: a
annotate -cl
$ hg annotate -cl a
8435f90966e4:1: a
annotate -d
$ hg annotate -d a
Thu Jan 01 00:00:01 1970 +0000: a
annotate -n
$ hg annotate -n a
0: a
annotate -nl
$ hg annotate -nl a
0:1: a
annotate -u
$ hg annotate -u a
nobody: a
annotate -cdnu
$ hg annotate -cdnu a
nobody 0 8435f90966e4 Thu Jan 01 00:00:01 1970 +0000: a
annotate -cdnul
$ hg annotate -cdnul a
nobody 0 8435f90966e4 Thu Jan 01 00:00:01 1970 +0000:1: a
annotate (JSON)
$ hg annotate -Tjson a
[
{
"abspath": "a",
"lines": [{"line": "a\n", "rev": 0}],
"path": "a"
}
]
$ hg annotate -Tjson -cdfnul a
[
{
"abspath": "a",
"lines": [{"date": [1.0, 0], "file": "a", "line": "a\n", "line_number": 1, "node": "8435f90966e442695d2ded29fdade2bac5ad8065", "rev": 0, "user": "nobody"}],
"path": "a"
}
]
$ cat <<EOF >>a
> a
> a
> EOF
$ hg ci -ma1 -d '1 0'
$ hg cp a b
$ hg ci -mb -d '1 0'
$ cat <<EOF >> b
> b4
> b5
> b6
> EOF
$ hg ci -mb2 -d '2 0'
annotate -n b
$ hg annotate -n b
0: a
1: a
1: a
3: b4
3: b5
3: b6
annotate --no-follow b
$ hg annotate --no-follow b
2: a
2: a
2: a
3: b4
3: b5
3: b6
annotate -nl b
$ hg annotate -nl b
0:1: a
1:2: a
1:3: a
3:4: b4
3:5: b5
3:6: b6
annotate -nf b
$ hg annotate -nf b
0 a: a
1 a: a
1 a: a
3 b: b4
3 b: b5
3 b: b6
annotate -nlf b
$ hg annotate -nlf b
0 a:1: a
1 a:2: a
1 a:3: a
3 b:4: b4
3 b:5: b5
3 b:6: b6
$ hg up -C 2
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ cat <<EOF >> b
> b4
> c
> b5
> EOF
$ hg ci -mb2.1 -d '2 0'
created new head
$ hg merge
merging b
0 files updated, 1 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ hg ci -mmergeb -d '3 0'
annotate after merge
(note: the first one falls back to the vanilla annotate which does not use linelog)
$ hg annotate -nf b --debug
fastannotate: b: rebuilding broken cache
fastannotate: b: 5 new changesets in the main branch
0 a: a
1 a: a
1 a: a
3 b: b4
4 b: c
3 b: b5
(difference explained below)
$ hg annotate -nf b --debug
fastannotate: b: using fast path (resolved fctx: False)
0 a: a
1 a: a
1 a: a
4 b: b4
4 b: c
4 b: b5
annotate after merge with -l
(fastannotate differs from annotate)
$ hg log -Gp -T '{rev}:{node}' -r '2..5'
@ 5:64afcdf8e29e063c635be123d8d2fb160af00f7e
|\
| o 4:5fbdc1152d97597717021ad9e063061b200f146bdiff --git a/b b/b
| | --- a/b
| | +++ b/b
| | @@ -1,3 +1,6 @@
| | a
| | a
| | a
| | +b4
| | +c
| | +b5
| |
o | 3:37ec9f5c3d1f99572d7075971cb4876e2139b52fdiff --git a/b b/b
|/ --- a/b
| +++ b/b
| @@ -1,3 +1,6 @@
| a
| a
| a
| +b4
| +b5
| +b6
|
o 2:3086dbafde1ce745abfc8d2d367847280aabae9ddiff --git a/a b/b
| copy from a
~ copy to b
(in this case, "b4", "b5" could be considered introduced by either rev 3, or rev 4.
and that causes the rev number difference)
$ hg annotate -nlf b --config fastannotate.modes=
0 a:1: a
1 a:2: a
1 a:3: a
3 b:4: b4
4 b:5: c
3 b:5: b5
$ hg annotate -nlf b
0 a:1: a
1 a:2: a
1 a:3: a
4 b:4: b4
4 b:5: c
4 b:6: b5
$ hg up -C 1
0 files updated, 0 files merged, 1 files removed, 0 files unresolved
$ hg cp a b
$ cat <<EOF > b
> a
> z
> a
> EOF
$ hg ci -mc -d '3 0'
created new head
$ hg merge
merging b
0 files updated, 1 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ cat <<EOF >> b
> b4
> c
> b5
> EOF
$ echo d >> b
$ hg ci -mmerge2 -d '4 0'
annotate after rename merge
$ hg annotate -nf b
0 a: a
6 b: z
1 a: a
3 b: b4
4 b: c
3 b: b5
7 b: d
annotate after rename merge with -l
(fastannotate differs from annotate)
$ hg log -Gp -T '{rev}:{node}' -r '0+1+6+7'
@ 7:6284bb6c38fef984a929862a53bbc71ce9eafa81diff --git a/b b/b
|\ --- a/b
| : +++ b/b
| : @@ -1,3 +1,7 @@
| : a
| : z
| : a
| : +b4
| : +c
| : +b5
| : +d
| :
o : 6:b80e3e32f75a6a67cd4ac85496a11511e9112816diff --git a/a b/b
:/ copy from a
: copy to b
: --- a/a
: +++ b/b
: @@ -1,3 +1,3 @@
: -a (?)
: a
: +z
: a
: -a (?)
:
o 1:762f04898e6684ff713415f7b8a8d53d33f96c92diff --git a/a b/a
| --- a/a
| +++ b/a
| @@ -1,1 +1,3 @@
| a
| +a
| +a
|
o 0:8435f90966e442695d2ded29fdade2bac5ad8065diff --git a/a b/a
new file mode 100644
--- /dev/null
+++ b/a
@@ -0,0 +1,1 @@
+a
(note on question marks:
the upstream bdiff change (96f2f50d923f+3633403888ae+8c0c75aa3ff4+5c4e2636c1a9
+38ed54888617) alters the output so deletion is not always at the end of the
output. for example:
| a | b | old | new | # old: e1d6aa0e4c3a, new: 8836f13e3c5b
|-------------------|
| a | a | a | -a |
| a | z | +z | a |
| a | a | a | +z |
| | | -a | a |
|-------------------|
| a | a | a |
| a | a | a |
| a | | -a |
this leads to more question marks below)
(rev 1 adds two "a"s and rev 6 deletes one "a".
the "a" that rev 6 deletes could be either the first or the second "a" of those two "a"s added by rev 1.
and that causes the line number difference)
$ hg annotate -nlf b --config fastannotate.modes=
0 a:1: a
6 b:2: z
1 a:3: a
3 b:4: b4
4 b:5: c
3 b:5: b5
7 b:7: d
$ hg annotate -nlf b
0 a:1: a (?)
1 a:2: a (?)
6 b:2: z
1 a:2: a (?)
1 a:3: a (?)
3 b:4: b4
4 b:5: c
3 b:5: b5
7 b:7: d
Issue2807: alignment of line numbers with -l
(fastannotate differs from annotate, same reason as above)
$ echo more >> b
$ hg ci -mmore -d '5 0'
$ echo more >> b
$ hg ci -mmore -d '6 0'
$ echo more >> b
$ hg ci -mmore -d '7 0'
$ hg annotate -nlf b
0 a: 1: a (?)
1 a: 2: a (?)
6 b: 2: z
1 a: 2: a (?)
1 a: 3: a (?)
3 b: 4: b4
4 b: 5: c
3 b: 5: b5
7 b: 7: d
8 b: 8: more
9 b: 9: more
10 b:10: more
linkrev vs rev
$ hg annotate -r tip -n a
0: a
1: a
1: a
linkrev vs rev with -l
$ hg annotate -r tip -nl a
0:1: a
1:2: a
1:3: a
Issue589: "undelete" sequence leads to crash
annotate was crashing when trying to --follow something
like A -> B -> A
generate ABA rename configuration
$ echo foo > foo
$ hg add foo
$ hg ci -m addfoo
$ hg rename foo bar
$ hg ci -m renamefoo
$ hg rename bar foo
$ hg ci -m renamebar
annotate after ABA with follow
$ hg annotate --follow foo
foo: foo
missing file
$ hg ann nosuchfile
abort: nosuchfile: no such file in rev e9e6b4fa872f
[255]
annotate file without '\n' on last line
$ printf "" > c
$ hg ci -A -m test -u nobody -d '1 0'
adding c
$ hg annotate c
$ printf "a\nb" > c
$ hg ci -m test
$ hg annotate c
[0-9]+: a (re)
[0-9]+: b (re)
Issue3841: check annotation of the file of which filelog includes
merging between the revision and its ancestor
to reproduce the situation with recent Mercurial, this script uses (1)
"hg debugsetparents" to merge without ancestor check by "hg merge",
and (2) the extension to allow filelog merging between the revision
and its ancestor by overriding "repo._filecommit".
$ cat > ../legacyrepo.py <<EOF
> from mercurial import node, error
> def reposetup(ui, repo):
> class legacyrepo(repo.__class__):
> def _filecommit(self, fctx, manifest1, manifest2,
> linkrev, tr, changelist):
> fname = fctx.path()
> text = fctx.data()
> flog = self.file(fname)
> fparent1 = manifest1.get(fname, node.nullid)
> fparent2 = manifest2.get(fname, node.nullid)
> meta = {}
> copy = fctx.renamed()
> if copy and copy[0] != fname:
> raise error.Abort('copying is not supported')
> if fparent2 != node.nullid:
> changelist.append(fname)
> return flog.add(text, meta, tr, linkrev,
> fparent1, fparent2)
> raise error.Abort('only merging is supported')
> repo.__class__ = legacyrepo
> EOF
$ cat > baz <<EOF
> 1
> 2
> 3
> 4
> 5
> EOF
$ hg add baz
$ hg commit -m "baz:0"
$ cat > baz <<EOF
> 1 baz:1
> 2
> 3
> 4
> 5
> EOF
$ hg commit -m "baz:1"
$ cat > baz <<EOF
> 1 baz:1
> 2 baz:2
> 3
> 4
> 5
> EOF
$ hg debugsetparents 17 17
$ hg --config extensions.legacyrepo=../legacyrepo.py commit -m "baz:2"
$ hg debugindexdot .hg/store/data/baz.i
digraph G {
-1 -> 0
0 -> 1
1 -> 2
1 -> 2
}
$ hg annotate baz
17: 1 baz:1
18: 2 baz:2
16: 3
16: 4
16: 5
$ cat > baz <<EOF
> 1 baz:1
> 2 baz:2
> 3 baz:3
> 4
> 5
> EOF
$ hg commit -m "baz:3"
$ cat > baz <<EOF
> 1 baz:1
> 2 baz:2
> 3 baz:3
> 4 baz:4
> 5
> EOF
$ hg debugsetparents 19 18
$ hg --config extensions.legacyrepo=../legacyrepo.py commit -m "baz:4"
$ hg debugindexdot .hg/store/data/baz.i
digraph G {
-1 -> 0
0 -> 1
1 -> 2
1 -> 2
2 -> 3
3 -> 4
2 -> 4
}
$ hg annotate baz
17: 1 baz:1
18: 2 baz:2
19: 3 baz:3
20: 4 baz:4
16: 5
annotate clean file
$ hg annotate -ncr "wdir()" foo
11 472b18db256d : foo
annotate modified file
$ echo foofoo >> foo
$ hg annotate -r "wdir()" foo
11 : foo
20+: foofoo
$ hg annotate -cr "wdir()" foo
472b18db256d : foo
b6bedd5477e7+: foofoo
$ hg annotate -ncr "wdir()" foo
11 472b18db256d : foo
20 b6bedd5477e7+: foofoo
$ hg annotate --debug -ncr "wdir()" foo
11 472b18db256d1e8282064eab4bfdaf48cbfe83cd : foo
20 b6bedd5477e797f25e568a6402d4697f3f895a72+: foofoo
$ hg annotate -udr "wdir()" foo
test Thu Jan 01 00:00:00 1970 +0000: foo
test [A-Za-z0-9:+ ]+: foofoo (re)
$ hg annotate -ncr "wdir()" -Tjson foo
[
{
"abspath": "foo",
"lines": [{"line": "foo\n", "node": "472b18db256d1e8282064eab4bfdaf48cbfe83cd", "rev": 11}, {"line": "foofoo\n", "node": null, "rev": null}],
"path": "foo"
}
]
annotate added file
$ echo bar > bar
$ hg add bar
$ hg annotate -ncr "wdir()" bar
20 b6bedd5477e7+: bar
annotate renamed file
$ hg rename foo renamefoo2
$ hg annotate -ncr "wdir()" renamefoo2
11 472b18db256d : foo
20 b6bedd5477e7+: foofoo
annotate missing file
$ rm baz
#if windows
$ hg annotate -ncr "wdir()" baz
abort: $TESTTMP\repo\baz: The system cannot find the file specified
[255]
#else
$ hg annotate -ncr "wdir()" baz
abort: $ENOENT$: $TESTTMP/repo/baz
[255]
#endif
annotate removed file
$ hg rm baz
#if windows
$ hg annotate -ncr "wdir()" baz
abort: $TESTTMP\repo\baz: The system cannot find the file specified
[255]
#else
$ hg annotate -ncr "wdir()" baz
abort: $ENOENT$: $TESTTMP/repo/baz
[255]
#endif
Test annotate with whitespace options
$ cd ..
$ hg init repo-ws
$ cd repo-ws
$ cat > a <<EOF
> aa
>
> b b
> EOF
$ hg ci -Am "adda"
adding a
$ sed 's/EOL$//g' > a <<EOF
> a a
>
> EOL
> b b
> EOF
$ hg ci -m "changea"
Annotate with no option
$ hg annotate a
1: a a
0:
1:
1: b b
Annotate with --ignore-space-change
$ hg annotate --ignore-space-change a
1: a a
1:
0:
0: b b
Annotate with --ignore-all-space
$ hg annotate --ignore-all-space a
0: a a
0:
1:
0: b b
Annotate with --ignore-blank-lines (similar to no options case)
$ hg annotate --ignore-blank-lines a
1: a a
0:
1:
1: b b
$ cd ..
Annotate with linkrev pointing to another branch
------------------------------------------------
create history with a filerev whose linkrev points to another branch
$ hg init branchedlinkrev
$ cd branchedlinkrev
$ echo A > a
$ hg commit -Am 'contentA'
adding a
$ echo B >> a
$ hg commit -m 'contentB'
$ hg up --rev 'desc(contentA)'
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ echo unrelated > unrelated
$ hg commit -Am 'unrelated'
adding unrelated
created new head
$ hg graft -r 'desc(contentB)'
grafting 1:fd27c222e3e6 "contentB"
$ echo C >> a
$ hg commit -m 'contentC'
$ echo W >> a
$ hg log -G
@ changeset: 4:072f1e8df249
| tag: tip
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: contentC
|
o changeset: 3:ff38df03cc4b
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: contentB
|
o changeset: 2:62aaf3f6fc06
| parent: 0:f0932f74827e
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: unrelated
|
| o changeset: 1:fd27c222e3e6
|/ user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: contentB
|
o changeset: 0:f0932f74827e
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: contentA
Annotate should list ancestor of starting revision only
$ hg annotate a
0: A
3: B
4: C
$ hg annotate a -r 'wdir()'
0 : A
3 : B
4 : C
4+: W
Even when the starting revision is the linkrev-shadowed one:
$ hg annotate a -r 3
0: A
3: B
$ cd ..
Issue5360: Deleted chunk in p1 of a merge changeset
$ hg init repo-5360
$ cd repo-5360
$ echo 1 > a
$ hg commit -A a -m 1
$ echo 2 >> a
$ hg commit -m 2
$ echo a > a
$ hg commit -m a
$ hg update '.^' -q
$ echo 3 >> a
$ hg commit -m 3 -q
$ hg merge 2 -q
$ cat > a << EOF
> b
> 1
> 2
> 3
> a
> EOF
$ hg resolve --mark -q
$ hg commit -m m
$ hg annotate a
4: b
0: 1
1: 2
3: 3
2: a
$ cd ..

tests/test-fastannotate-perfhack.t

  • This file was added.
$ cat >> $HGRCPATH << EOF
> [extensions]
> fastannotate=
> [fastannotate]
> perfhack=1
> EOF
$ HGMERGE=true; export HGMERGE
$ hg init repo
$ cd repo
a simple merge case
$ echo 1 > a
$ hg commit -qAm 'append 1'
$ echo 2 >> a
$ hg commit -m 'append 2'
$ echo 3 >> a
$ hg commit -m 'append 3'
$ hg up 1 -q
$ cat > a << EOF
> 0
> 1
> 2
> EOF
$ hg commit -qm 'insert 0'
$ hg merge 2 -q
$ echo 4 >> a
$ hg commit -m merge
$ hg log -G -T '{rev}: {desc}'
@ 4: merge
|\
| o 3: insert 0
| |
o | 2: append 3
|/
o 1: append 2
|
o 0: append 1
$ hg fastannotate a
3: 0
0: 1
1: 2
2: 3
4: 4
$ hg fastannotate -r 0 a
0: 1
$ hg fastannotate -r 1 a
0: 1
1: 2
$ hg fastannotate -udnclf a
test 3 d641cb51f61e Thu Jan 01 00:00:00 1970 +0000 a:1: 0
test 0 4994017376d3 Thu Jan 01 00:00:00 1970 +0000 a:1: 1
test 1 e940cb6d9a06 Thu Jan 01 00:00:00 1970 +0000 a:2: 2
test 2 26162a884ba6 Thu Jan 01 00:00:00 1970 +0000 a:3: 3
test 4 3ad7bcd2815f Thu Jan 01 00:00:00 1970 +0000 a:5: 4
$ hg fastannotate --linear a
3: 0
0: 1
1: 2
4: 3
4: 4
incrementally updating
$ hg fastannotate -r 0 a --debug
fastannotate: a: using fast path (resolved fctx: True)
0: 1
$ hg fastannotate -r 0 a --debug --rebuild
fastannotate: a: 1 new changesets in the main branch
0: 1
$ hg fastannotate -r 1 a --debug
fastannotate: a: 1 new changesets in the main branch
0: 1
1: 2
$ hg fastannotate -r 3 a --debug
fastannotate: a: 1 new changesets in the main branch
3: 0
0: 1
1: 2
$ hg fastannotate -r 4 a --debug
fastannotate: a: 1 new changesets in the main branch
3: 0
0: 1
1: 2
2: 3
4: 4
$ hg fastannotate -r 1 a --debug
fastannotate: a: using fast path (resolved fctx: True)
0: 1
1: 2
rebuild happens automatically if unable to update
$ hg fastannotate -r 2 a --debug
fastannotate: a: cache broken and deleted
fastannotate: a: 3 new changesets in the main branch
0: 1
1: 2
2: 3
config option "fastannotate.mainbranch"
$ hg fastannotate -r 1 --rebuild --config fastannotate.mainbranch=tip a --debug
fastannotate: a: 4 new changesets in the main branch
0: 1
1: 2
$ hg fastannotate -r 4 a --debug
fastannotate: a: using fast path (resolved fctx: True)
3: 0
0: 1
1: 2
2: 3
4: 4
rename
$ hg mv a b
$ cat > b << EOF
> 0
> 11
> 3
> 44
> EOF
$ hg commit -m b -q
$ hg fastannotate -ncf --long-hash b
3 d641cb51f61e331c44654104301f8154d7865c89 a: 0
5 d44dade239915bc82b91e4556b1257323f8e5824 b: 11
2 26162a884ba60e8c87bf4e0d6bb8efcc6f711a4e a: 3
5 d44dade239915bc82b91e4556b1257323f8e5824 b: 44
$ hg fastannotate -r 26162a884ba60e8c87bf4e0d6bb8efcc6f711a4e a
0: 1
1: 2
2: 3
fastannotate --deleted
$ hg fastannotate --deleted -nf b
3 a: 0
5 b: 11
0 a: -1
1 a: -2
2 a: 3
5 b: 44
4 a: -4
$ hg fastannotate --deleted -r 3 -nf a
3 a: 0
0 a: 1
1 a: 2
file and directories with ".l", ".m" suffixes
$ cd ..
$ hg init repo2
$ cd repo2
$ mkdir a.l b.m c.lock a.l.hg b.hg
$ for i in a b c d d.l d.m a.l/a b.m/a c.lock/a a.l.hg/a b.hg/a; do
> echo $i > $i
> done
$ hg add . -q
$ hg commit -m init
$ hg fastannotate a.l/a b.m/a c.lock/a a.l.hg/a b.hg/a d.l d.m a b c d
0: a
0: a.l.hg/a
0: a.l/a
0: b
0: b.hg/a
0: b.m/a
0: c
0: c.lock/a
0: d
0: d.l
0: d.m
empty file
$ touch empty
$ hg commit -A empty -m empty
$ hg fastannotate empty

tests/test-fastannotate-protocol.t

  • This file was added.
$ cat >> $HGRCPATH << EOF
> [ui]
> ssh = $PYTHON "$TESTDIR/dummyssh"
> [extensions]
> fastannotate=
> [fastannotate]
> mainbranch=@
> EOF
$ HGMERGE=true; export HGMERGE
setup the server repo
$ hg init repo-server
$ cd repo-server
$ cat >> .hg/hgrc << EOF
> [fastannotate]
> server=1
> EOF
$ for i in 1 2 3 4; do
> echo $i >> a
> hg commit -A -m $i a
> done
$ [ -d .hg/fastannotate ]
[1]
$ hg bookmark @
$ cd ..
setup the local repo
$ hg clone 'ssh://user@dummy/repo-server' repo-local -q
$ cd repo-local
$ cat >> .hg/hgrc << EOF
> [fastannotate]
> client=1
> clientfetchthreshold=0
> EOF
$ [ -d .hg/fastannotate ]
[1]
$ hg fastannotate a --debug
running * (glob)
sending hello command
sending between command
remote: * (glob) (?)
remote: capabilities: * (glob)
remote: * (glob) (?)
sending protocaps command
fastannotate: requesting 1 files
sending getannotate command
fastannotate: writing 112 bytes to fastannotate/default/a.l (?)
fastannotate: server returned
fastannotate: writing 112 bytes to fastannotate/default/a.l (?)
fastannotate: writing 94 bytes to fastannotate/default/a.m
fastannotate: a: using fast path (resolved fctx: True)
0: 1
1: 2
2: 3
3: 4
the cache could be reused and no download is necessary
$ hg fastannotate a --debug
fastannotate: a: using fast path (resolved fctx: True)
0: 1
1: 2
2: 3
3: 4
if the client agrees where the head of the master branch is, no re-download
happens even if the client has more commits
$ echo 5 >> a
$ hg commit -m 5
$ hg bookmark -r 3 @ -f
$ hg fastannotate a --debug
0: 1
1: 2
2: 3
3: 4
4: 5
if the client has a different "@" (head of the master branch) and "@" is ahead
of the server, the server can detect things are unchanged and does not return
full contents (not that there is no "writing ... to fastannotate"), but the
client can also build things up on its own (causing diverge)
$ hg bookmark -r 4 @ -f
$ hg fastannotate a --debug
running * (glob)
sending hello command
sending between command
remote: * (glob) (?)
remote: capabilities: * (glob)
remote: * (glob) (?)
sending protocaps command
fastannotate: requesting 1 files
sending getannotate command
fastannotate: server returned
fastannotate: a: 1 new changesets in the main branch
0: 1
1: 2
2: 3
3: 4
4: 5
if the client has a different "@" which is behind the server. no download is
necessary
$ hg fastannotate a --debug --config fastannotate.mainbranch=2
fastannotate: a: using fast path (resolved fctx: True)
0: 1
1: 2
2: 3
3: 4
4: 5
define fastannotate on-disk paths
$ p1=.hg/fastannotate/default
$ p2=../repo-server/.hg/fastannotate/default
revert bookmark change so the client is behind the server
$ hg bookmark -r 2 @ -f
in the "fctx" mode with the "annotate" command, the client also downloads the
cache. but not in the (default) "fastannotate" mode.
$ rm $p1/a.l $p1/a.m
$ hg annotate a --debug | grep 'fastannotate: writing'
[1]
$ hg annotate a --config fastannotate.modes=fctx --debug | grep 'fastannotate: writing' | sort
fastannotate: writing 112 bytes to fastannotate/default/a.l
fastannotate: writing 94 bytes to fastannotate/default/a.m
the fastannotate cache (built server-side, downloaded client-side) in two repos
have the same content (because the client downloads from the server)
$ diff $p1/a.l $p2/a.l
$ diff $p1/a.m $p2/a.m
in the "fctx" mode, the client could also build the cache locally
$ hg annotate a --config fastannotate.modes=fctx --debug --config fastannotate.mainbranch=4 | grep fastannotate
fastannotate: requesting 1 files
fastannotate: server returned
fastannotate: a: 1 new changesets in the main branch
the server would rebuild broken cache automatically
$ cp $p2/a.m $p2/a.m.bak
$ echo BROKEN1 > $p1/a.m
$ echo BROKEN2 > $p2/a.m
$ hg fastannotate a --debug | grep 'fastannotate: writing' | sort
fastannotate: writing 112 bytes to fastannotate/default/a.l
fastannotate: writing 94 bytes to fastannotate/default/a.m
$ diff $p1/a.m $p2/a.m
$ diff $p2/a.m $p2/a.m.bak
use the "debugbuildannotatecache" command to build annotate cache
$ rm -rf $p1 $p2
$ hg --cwd ../repo-server debugbuildannotatecache a --debug
fastannotate: a: 4 new changesets in the main branch
$ hg --cwd ../repo-local debugbuildannotatecache a --debug
running * (glob)
sending hello command
sending between command
remote: * (glob) (?)
remote: capabilities: * (glob)
remote: * (glob) (?)
sending protocaps command
fastannotate: requesting 1 files
sending getannotate command
fastannotate: server returned
fastannotate: writing * (glob)
fastannotate: writing * (glob)
$ diff $p1/a.l $p2/a.l
$ diff $p1/a.m $p2/a.m
with the clientfetchthreshold config option, the client can build up the cache
without downloading from the server
$ rm -rf $p1
$ hg fastannotate a --debug --config fastannotate.clientfetchthreshold=10
fastannotate: a: 3 new changesets in the main branch
0: 1
1: 2
2: 3
3: 4
4: 5
if the fastannotate directory is not writable, the fctx mode still works
$ rm -rf $p1
$ touch $p1
$ hg annotate a --debug --traceback --config fastannotate.modes=fctx
fastannotate: a: cache broken and deleted
fastannotate: prefetch failed: * (glob)
fastannotate: a: cache broken and deleted
fastannotate: falling back to the vanilla annotate: * (glob)
0: 1
1: 2
2: 3
3: 4
4: 5
with serverbuildondemand=False, the server will not build anything
$ cat >> ../repo-server/.hg/hgrc <<EOF
> [fastannotate]
> serverbuildondemand=False
> EOF
$ rm -rf $p1 $p2
$ hg fastannotate a --debug | grep 'fastannotate: writing'
[1]

tests/test-fastannotate-renames.t

  • This file was added.
$ cat >> $HGRCPATH << EOF
> [extensions]
> fastannotate=
> [fastannotate]
> mainbranch=main
> EOF
$ hg init repo
$ cd repo
add or rename files on top of the master branch
$ echo a1 > a
$ echo b1 > b
$ hg commit -qAm 1
$ hg bookmark -i main
$ hg fastannotate --debug -nf b
fastannotate: b: 1 new changesets in the main branch
0 b: b1
$ hg fastannotate --debug -nf a
fastannotate: a: 1 new changesets in the main branch
0 a: a1
$ echo a2 >> a
$ cat > b << EOF
> b0
> b1
> EOF
$ hg mv a t
$ hg mv b a
$ hg mv t b
$ hg commit -m 'swap names'
existing linelogs are not helpful with such renames in side branches
$ hg fastannotate --debug -nf a
fastannotate: a: linelog cannot help in annotating this revision
1 a: b0
0 b: b1
$ hg fastannotate --debug -nf b
fastannotate: b: linelog cannot help in annotating this revision
0 a: a1
1 b: a2
move main branch forward, rebuild should happen
$ hg bookmark -i main -r . -q
$ hg fastannotate --debug -nf b
fastannotate: b: cache broken and deleted
fastannotate: b: 2 new changesets in the main branch
0 a: a1
1 b: a2
$ hg fastannotate --debug -nf b
fastannotate: b: using fast path (resolved fctx: True)
0 a: a1
1 b: a2
for rev 0, the existing linelog is still useful for a, but not for b
$ hg fastannotate --debug -nf a -r 0
fastannotate: a: using fast path (resolved fctx: True)
0 a: a1
$ hg fastannotate --debug -nf b -r 0
fastannotate: b: linelog cannot help in annotating this revision
0 b: b1
a rebuild can also be triggered if "the main branch last time" mismatches
$ echo a3 >> a
$ hg commit -m a3
$ cat >> b << EOF
> b3
> b4
> EOF
$ hg commit -m b4
$ hg bookmark -i main -q
$ hg fastannotate --debug -nf a
fastannotate: a: cache broken and deleted
fastannotate: a: 3 new changesets in the main branch
1 a: b0
0 b: b1
2 a: a3
$ hg fastannotate --debug -nf a
fastannotate: a: using fast path (resolved fctx: True)
1 a: b0
0 b: b1
2 a: a3
linelog can be updated without being helpful
$ hg mv a t
$ hg mv b a
$ hg mv t b
$ hg commit -m 'swap names again'
$ hg fastannotate --debug -nf b
fastannotate: b: 1 new changesets in the main branch
1 a: b0
0 b: b1
2 a: a3
$ hg fastannotate --debug -nf b
fastannotate: b: linelog cannot help in annotating this revision
1 a: b0
0 b: b1
2 a: a3
move main branch forward again, rebuilds are one-time
$ hg bookmark -i main -q
$ hg fastannotate --debug -nf a
fastannotate: a: cache broken and deleted
fastannotate: a: 4 new changesets in the main branch
0 a: a1
1 b: a2
3 b: b3
3 b: b4
$ hg fastannotate --debug -nf b
fastannotate: b: cache broken and deleted
fastannotate: b: 4 new changesets in the main branch
1 a: b0
0 b: b1
2 a: a3
$ hg fastannotate --debug -nf a
fastannotate: a: using fast path (resolved fctx: True)
0 a: a1
1 b: a2
3 b: b3
3 b: b4
$ hg fastannotate --debug -nf b
fastannotate: b: using fast path (resolved fctx: True)
1 a: b0
0 b: b1
2 a: a3
list changeset hashes to improve readability
$ hg log -T '{rev}:{node}\n'
4:980e1ab8c516350172928fba95b49ede3b643dca
3:14e123fedad9f491f5dde0beca2a767625a0a93a
2:96495c41e4c12218766f78cdf244e768d7718b0f
1:35c2b781234c994896aba36bd3245d3104e023df
0:653e95416ebb5dbcc25bbc7f75568c9e01f7bd2f
annotate a revision not in the linelog. linelog cannot be used, but does not get rebuilt either
$ hg fastannotate --debug -nf a -r 96495c41e4c12218766f78cdf244e768d7718b0f
fastannotate: a: linelog cannot help in annotating this revision
1 a: b0
0 b: b1
2 a: a3
$ hg fastannotate --debug -nf a -r 2
fastannotate: a: linelog cannot help in annotating this revision
1 a: b0
0 b: b1
2 a: a3
$ hg fastannotate --debug -nf a -r .
fastannotate: a: using fast path (resolved fctx: True)
0 a: a1
1 b: a2
3 b: b3
3 b: b4
annotate an ancient revision where the path matches. linelog can be used
$ hg fastannotate --debug -nf a -r 0
fastannotate: a: using fast path (resolved fctx: True)
0 a: a1
$ hg fastannotate --debug -nf a -r 653e95416ebb5dbcc25bbc7f75568c9e01f7bd2f
fastannotate: a: using fast path (resolved fctx: False)
0 a: a1

tests/test-fastannotate-revmap.py

  • This file was added.
from __future__ import absolute_import, print_function
import os
import tempfile
from mercurial import util
from hgext.fastannotate import error, revmap
def genhsh(i):
return chr(i) + b'\0' * 19
def gettemppath():
fd, path = tempfile.mkstemp()
os.unlink(path)
os.close(fd)
return path
def ensure(condition):
if not condition:
raise RuntimeError('Unexpected')
def testbasicreadwrite():
path = gettemppath()
rm = revmap.revmap(path)
ensure(rm.maxrev == 0)
for i in xrange(5):
ensure(rm.rev2hsh(i) is None)
ensure(rm.hsh2rev(b'\0' * 20) is None)
paths = ['', 'a', None, 'b', 'b', 'c', 'c', None, 'a', 'b', 'a', 'a']
for i in xrange(1, 5):
ensure(rm.append(genhsh(i), sidebranch=(i & 1), path=paths[i]) == i)
ensure(rm.maxrev == 4)
for i in xrange(1, 5):
ensure(rm.hsh2rev(genhsh(i)) == i)
ensure(rm.rev2hsh(i) == genhsh(i))
# re-load and verify
rm.flush()
rm = revmap.revmap(path)
ensure(rm.maxrev == 4)
for i in xrange(1, 5):
ensure(rm.hsh2rev(genhsh(i)) == i)
ensure(rm.rev2hsh(i) == genhsh(i))
ensure(bool(rm.rev2flag(i) & revmap.sidebranchflag) == bool(i & 1))
# append without calling save() explicitly
for i in xrange(5, 12):
ensure(rm.append(genhsh(i), sidebranch=(i & 1), path=paths[i],
flush=True) == i)
# re-load and verify
rm = revmap.revmap(path)
ensure(rm.maxrev == 11)
for i in xrange(1, 12):
ensure(rm.hsh2rev(genhsh(i)) == i)
ensure(rm.rev2hsh(i) == genhsh(i))
ensure(rm.rev2path(i) == paths[i] or paths[i - 1])
ensure(bool(rm.rev2flag(i) & revmap.sidebranchflag) == bool(i & 1))
os.unlink(path)
# missing keys
ensure(rm.rev2hsh(12) is None)
ensure(rm.rev2hsh(0) is None)
ensure(rm.rev2hsh(-1) is None)
ensure(rm.rev2flag(12) is None)
ensure(rm.rev2path(12) is None)
ensure(rm.hsh2rev(b'\1' * 20) is None)
# illformed hash (not 20 bytes)
try:
rm.append(b'\0')
ensure(False)
except Exception:
pass
def testcorruptformat():
path = gettemppath()
# incorrect header
with open(path, 'w') as f:
f.write(b'NOT A VALID HEADER')
try:
revmap.revmap(path)
ensure(False)
except error.CorruptedFileError:
pass
# rewrite the file
os.unlink(path)
rm = revmap.revmap(path)
rm.append(genhsh(0), flush=True)
rm = revmap.revmap(path)
ensure(rm.maxrev == 1)
# corrupt the file by appending a byte
size = os.stat(path).st_size
with open(path, 'a') as f:
f.write('\xff')
try:
revmap.revmap(path)
ensure(False)
except error.CorruptedFileError:
pass
# corrupt the file by removing the last byte
ensure(size > 0)
with open(path, 'w') as f:
f.truncate(size - 1)
try:
revmap.revmap(path)
ensure(False)
except error.CorruptedFileError:
pass
os.unlink(path)
def testcopyfrom():
path = gettemppath()
rm = revmap.revmap(path)
for i in xrange(1, 10):
ensure(rm.append(genhsh(i), sidebranch=(i & 1), path=str(i // 3)) == i)
rm.flush()
# copy rm to rm2
rm2 = revmap.revmap()
rm2.copyfrom(rm)
path2 = gettemppath()
rm2.path = path2
rm2.flush()
# two files should be the same
ensure(len(set(util.readfile(p) for p in [path, path2])) == 1)
os.unlink(path)
os.unlink(path2)
class fakefctx(object):
def __init__(self, node, path=None):
self._node = node
self._path = path
def node(self):
return self._node
def path(self):
return self._path
def testcontains():
path = gettemppath()
rm = revmap.revmap(path)
for i in xrange(1, 5):
ensure(rm.append(genhsh(i), sidebranch=(i & 1)) == i)
for i in xrange(1, 5):
ensure(((genhsh(i), None) in rm) == ((i & 1) == 0))
ensure((fakefctx(genhsh(i)) in rm) == ((i & 1) == 0))
for i in xrange(5, 10):
ensure(fakefctx(genhsh(i)) not in rm)
ensure((genhsh(i), None) not in rm)
# "contains" checks paths
rm = revmap.revmap()
for i in xrange(1, 5):
ensure(rm.append(genhsh(i), path=str(i // 2)) == i)
for i in xrange(1, 5):
ensure(fakefctx(genhsh(i), path=str(i // 2)) in rm)
ensure(fakefctx(genhsh(i), path='a') not in rm)
def testlastnode():
path = gettemppath()
ensure(revmap.getlastnode(path) is None)
rm = revmap.revmap(path)
ensure(revmap.getlastnode(path) is None)
for i in xrange(1, 10):
hsh = genhsh(i)
rm.append(hsh, path=str(i // 2), flush=True)
ensure(revmap.getlastnode(path) == hsh)
rm2 = revmap.revmap(path)
ensure(rm2.rev2hsh(rm2.maxrev) == hsh)
testbasicreadwrite()
testcorruptformat()
testcopyfrom()
testcontains()
testlastnode()

tests/test-fastannotate.t

  • This file was added.
$ cat >> $HGRCPATH << EOF
> [extensions]
> fastannotate=
> EOF
$ HGMERGE=true; export HGMERGE
$ hg init repo
$ cd repo
a simple merge case
$ echo 1 > a
$ hg commit -qAm 'append 1'
$ echo 2 >> a
$ hg commit -m 'append 2'
$ echo 3 >> a
$ hg commit -m 'append 3'
$ hg up 1 -q
$ cat > a << EOF
> 0
> 1
> 2
> EOF
$ hg commit -qm 'insert 0'
$ hg merge 2 -q
$ echo 4 >> a
$ hg commit -m merge
$ hg log -G -T '{rev}: {desc}'
@ 4: merge
|\
| o 3: insert 0
| |
o | 2: append 3
|/
o 1: append 2
|
o 0: append 1
$ hg fastannotate a
3: 0
0: 1
1: 2
2: 3
4: 4
$ hg fastannotate -r 0 a
0: 1
$ hg fastannotate -r 1 a
0: 1
1: 2
$ hg fastannotate -udnclf a
test 3 d641cb51f61e Thu Jan 01 00:00:00 1970 +0000 a:1: 0
test 0 4994017376d3 Thu Jan 01 00:00:00 1970 +0000 a:1: 1
test 1 e940cb6d9a06 Thu Jan 01 00:00:00 1970 +0000 a:2: 2
test 2 26162a884ba6 Thu Jan 01 00:00:00 1970 +0000 a:3: 3
test 4 3ad7bcd2815f Thu Jan 01 00:00:00 1970 +0000 a:5: 4
$ hg fastannotate --linear a
3: 0
0: 1
1: 2
4: 3
4: 4
incrementally updating
$ hg fastannotate -r 0 a --debug
fastannotate: a: using fast path (resolved fctx: True)
0: 1
$ hg fastannotate -r 0 a --debug --rebuild
fastannotate: a: 1 new changesets in the main branch
0: 1
$ hg fastannotate -r 1 a --debug
fastannotate: a: 1 new changesets in the main branch
0: 1
1: 2
$ hg fastannotate -r 3 a --debug
fastannotate: a: 1 new changesets in the main branch
3: 0
0: 1
1: 2
$ hg fastannotate -r 4 a --debug
fastannotate: a: 1 new changesets in the main branch
3: 0
0: 1
1: 2
2: 3
4: 4
$ hg fastannotate -r 1 a --debug
fastannotate: a: using fast path (resolved fctx: True)
0: 1
1: 2
rebuild happens automatically if unable to update
$ hg fastannotate -r 2 a --debug
fastannotate: a: cache broken and deleted
fastannotate: a: 3 new changesets in the main branch
0: 1
1: 2
2: 3
config option "fastannotate.mainbranch"
$ hg fastannotate -r 1 --rebuild --config fastannotate.mainbranch=tip a --debug
fastannotate: a: 4 new changesets in the main branch
0: 1
1: 2
$ hg fastannotate -r 4 a --debug
fastannotate: a: using fast path (resolved fctx: True)
3: 0
0: 1
1: 2
2: 3
4: 4
config option "fastannotate.modes"
$ hg annotate -r 1 --debug a
0: 1
1: 2
$ hg annotate --config fastannotate.modes=fctx -r 1 --debug a
fastannotate: a: using fast path (resolved fctx: False)
0: 1
1: 2
$ hg fastannotate --config fastannotate.modes=fctx -h -q
hg: unknown command 'fastannotate'
(did you mean *) (glob)
[255]
rename
$ hg mv a b
$ cat > b << EOF
> 0
> 11
> 3
> 44
> EOF
$ hg commit -m b -q
$ hg fastannotate -ncf --long-hash b
3 d641cb51f61e331c44654104301f8154d7865c89 a: 0
5 d44dade239915bc82b91e4556b1257323f8e5824 b: 11
2 26162a884ba60e8c87bf4e0d6bb8efcc6f711a4e a: 3
5 d44dade239915bc82b91e4556b1257323f8e5824 b: 44
$ hg fastannotate -r 26162a884ba60e8c87bf4e0d6bb8efcc6f711a4e a
0: 1
1: 2
2: 3
fastannotate --deleted
$ hg fastannotate --deleted -nf b
3 a: 0
5 b: 11
0 a: -1
1 a: -2
2 a: 3
5 b: 44
4 a: -4
$ hg fastannotate --deleted -r 3 -nf a
3 a: 0
0 a: 1
1 a: 2
file and directories with ".l", ".m" suffixes
$ cd ..
$ hg init repo2
$ cd repo2
$ mkdir a.l b.m c.lock a.l.hg b.hg
$ for i in a b c d d.l d.m a.l/a b.m/a c.lock/a a.l.hg/a b.hg/a; do
> echo $i > $i
> done
$ hg add . -q
$ hg commit -m init
$ hg fastannotate a.l/a b.m/a c.lock/a a.l.hg/a b.hg/a d.l d.m a b c d
0: a
0: a.l.hg/a
0: a.l/a
0: b
0: b.hg/a
0: b.m/a
0: c
0: c.lock/a
0: d
0: d.l
0: d.m
empty file
$ touch empty
$ hg commit -A empty -m empty
$ hg fastannotate empty
json format
$ hg fastannotate -Tjson -cludn b a empty
[
{
"date": [0.0, 0],
"line": "a\n",
"line_number": 1,
"node": "1fd620b16252aecb54c6aa530dff5ed6e6ec3d21",
"rev": 0,
"user": "test"
},
{
"date": [0.0, 0],
"line": "b\n",
"line_number": 1,
"node": "1fd620b16252aecb54c6aa530dff5ed6e6ec3d21",
"rev": 0,
"user": "test"
}
]
$ hg fastannotate -Tjson -cludn empty
[
]
$ hg fastannotate -Tjson --no-content -n a
[
{
"rev": 0
}
]
working copy
$ echo a >> a
$ hg fastannotate -r 'wdir()' a
abort: cannot update linelog to wdir()
(set fastannotate.mainbranch)
[255]
$ cat >> $HGRCPATH << EOF
> [fastannotate]
> mainbranch = .
> EOF
$ hg fastannotate -r 'wdir()' a
0 : a
1+: a
$ hg fastannotate -cludn -r 'wdir()' a
test 0 1fd620b16252 Thu Jan 01 00:00:00 1970 +0000:1: a
test 1 720582f5bdb6+ *:2: a (glob)
$ hg fastannotate -cludn -r 'wdir()' -Tjson a
[
{
"date": [0.0, 0],
"line": "a\n",
"line_number": 1,
"node": "1fd620b16252aecb54c6aa530dff5ed6e6ec3d21",
"rev": 0,
"user": "test"
},
{
"date": [*, 0], (glob)
"line": "a\n",
"line_number": 2,
"node": null,
"rev": null,
"user": "test"
}
]