Mercurial > hg
annotate mercurial/transaction.py @ 23291:03d2d6931836
transaction: allow registering a temporary transaction file
During the transaction, files may be created to store or expose data
involved in the transaction (eg: changelog index data are written in
a 'changelog.i.a' for hooks). But we do not have an official way to
record such file creation and make sure they are cleaned up. The lack
of clean-up is currently okay because there is a single file involved
and a single producer/consumer.
However, as we want to expose more data (bookmarks, phases, obsmarker)
we need something more solid. The 'backupentries' mechanism could
handle that. Temporary files can be encoded as a backup of nothing
'('', <temporarypath>)'. We "need" to attach it to the same mechanism
as we use to be able to use temporary transaction files outside of
.'store/' and 'backupentries' is expected to gain such feature.
This changeset makes it clear that we should rename 'backupentries' to
something more generic.
author | Pierre-Yves David <pierre-yves.david@fb.com> |
---|---|
date | Wed, 05 Nov 2014 09:27:08 +0000 |
parents | 59513ec76748 |
children | 7eb520f5efe4 |
rev | line source |
---|---|
17424
e7cfe3587ea4
fix trivial spelling errors
Mads Kiilerich <mads@kiilerich.com>
parents:
16689
diff
changeset
|
1 # transaction.py - simple journaling scheme for mercurial |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
2 # |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
3 # This transaction scheme is intended to gracefully handle program |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
4 # errors and interruptions. More serious failures like system crashes |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
5 # can be recovered with an fsck-like tool. As the whole repository is |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
6 # effectively log-structured, this should amount to simply truncating |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
7 # anything that isn't referenced in the changelog. |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
8 # |
2859 | 9 # Copyright 2005, 2006 Matt Mackall <mpm@selenic.com> |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
10 # |
8225
46293a0c7e9f
updated license to be explicit about GPL version 2
Martin Geisler <mg@lazybytes.net>
parents:
8071
diff
changeset
|
11 # This software may be used and distributed according to the terms of the |
10263 | 12 # GNU General Public License version 2 or any later version. |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
13 |
3891 | 14 from i18n import _ |
20886
203908968644
transaction: drop extra import caught by pyflakes
Matt Mackall <mpm@selenic.com>
parents:
20882
diff
changeset
|
15 import errno |
20882
5dffd06f1e50
transaction: add support for non-append files
Durham Goode <durham@fb.com>
parents:
20881
diff
changeset
|
16 import error, util |
8289
fe8a3e56039f
transaction: ensure finished transactions are not reused
Henrik Stuart <hg@hstuart.dk>
parents:
8225
diff
changeset
|
17 |
23064
5dc888b79e70
transactions: add version number to journal.backupfiles
Durham Goode <durham@fb.com>
parents:
23063
diff
changeset
|
18 version = 1 |
5dc888b79e70
transactions: add version number to journal.backupfiles
Durham Goode <durham@fb.com>
parents:
23063
diff
changeset
|
19 |
8289
fe8a3e56039f
transaction: ensure finished transactions are not reused
Henrik Stuart <hg@hstuart.dk>
parents:
8225
diff
changeset
|
20 def active(func): |
fe8a3e56039f
transaction: ensure finished transactions are not reused
Henrik Stuart <hg@hstuart.dk>
parents:
8225
diff
changeset
|
21 def _active(self, *args, **kwds): |
fe8a3e56039f
transaction: ensure finished transactions are not reused
Henrik Stuart <hg@hstuart.dk>
parents:
8225
diff
changeset
|
22 if self.count == 0: |
fe8a3e56039f
transaction: ensure finished transactions are not reused
Henrik Stuart <hg@hstuart.dk>
parents:
8225
diff
changeset
|
23 raise error.Abort(_( |
fe8a3e56039f
transaction: ensure finished transactions are not reused
Henrik Stuart <hg@hstuart.dk>
parents:
8225
diff
changeset
|
24 'cannot use transaction when it is already committed/aborted')) |
fe8a3e56039f
transaction: ensure finished transactions are not reused
Henrik Stuart <hg@hstuart.dk>
parents:
8225
diff
changeset
|
25 return func(self, *args, **kwds) |
fe8a3e56039f
transaction: ensure finished transactions are not reused
Henrik Stuart <hg@hstuart.dk>
parents:
8225
diff
changeset
|
26 return _active |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
27 |
20882
5dffd06f1e50
transaction: add support for non-append files
Durham Goode <durham@fb.com>
parents:
20881
diff
changeset
|
28 def _playback(journal, report, opener, entries, backupentries, unlink=True): |
22204
f8dc6599da5d
cleanup: name unused variables using convention of leading _
Mads Kiilerich <madski@unity3d.com>
parents:
22199
diff
changeset
|
29 for f, o, _ignore in entries: |
8294
48a382c23226
transaction: refactor transaction.abort and rollback to use the same code
Henrik Stuart <hg@hstuart.dk>
parents:
8290
diff
changeset
|
30 if o or not unlink: |
48a382c23226
transaction: refactor transaction.abort and rollback to use the same code
Henrik Stuart <hg@hstuart.dk>
parents:
8290
diff
changeset
|
31 try: |
13400
14f3795a5ed7
explicitly close files
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents:
11685
diff
changeset
|
32 fp = opener(f, 'a') |
14f3795a5ed7
explicitly close files
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents:
11685
diff
changeset
|
33 fp.truncate(o) |
14f3795a5ed7
explicitly close files
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents:
11685
diff
changeset
|
34 fp.close() |
9686
ddf2adf88b89
transaction: more specific exceptions, os.unlink can raise OSError
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
9220
diff
changeset
|
35 except IOError: |
8294
48a382c23226
transaction: refactor transaction.abort and rollback to use the same code
Henrik Stuart <hg@hstuart.dk>
parents:
8290
diff
changeset
|
36 report(_("failed to truncate %s\n") % f) |
48a382c23226
transaction: refactor transaction.abort and rollback to use the same code
Henrik Stuart <hg@hstuart.dk>
parents:
8290
diff
changeset
|
37 raise |
48a382c23226
transaction: refactor transaction.abort and rollback to use the same code
Henrik Stuart <hg@hstuart.dk>
parents:
8290
diff
changeset
|
38 else: |
48a382c23226
transaction: refactor transaction.abort and rollback to use the same code
Henrik Stuart <hg@hstuart.dk>
parents:
8290
diff
changeset
|
39 try: |
20084
a3378a1b0a05
transaction: unlink target file via vfs
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
17424
diff
changeset
|
40 opener.unlink(f) |
9686
ddf2adf88b89
transaction: more specific exceptions, os.unlink can raise OSError
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
9220
diff
changeset
|
41 except (IOError, OSError), inst: |
8294
48a382c23226
transaction: refactor transaction.abort and rollback to use the same code
Henrik Stuart <hg@hstuart.dk>
parents:
8290
diff
changeset
|
42 if inst.errno != errno.ENOENT: |
48a382c23226
transaction: refactor transaction.abort and rollback to use the same code
Henrik Stuart <hg@hstuart.dk>
parents:
8290
diff
changeset
|
43 raise |
20882
5dffd06f1e50
transaction: add support for non-append files
Durham Goode <durham@fb.com>
parents:
20881
diff
changeset
|
44 |
5dffd06f1e50
transaction: add support for non-append files
Durham Goode <durham@fb.com>
parents:
20881
diff
changeset
|
45 backupfiles = [] |
23247
def27d46a9a8
transaction: drop the third item in `tr.backupentries`
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23220
diff
changeset
|
46 for f, b in backupentries: |
23291
03d2d6931836
transaction: allow registering a temporary transaction file
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23290
diff
changeset
|
47 if f and b: |
23278
aa19432764d6
transaction: handle missing file in backupentries (instead of using entries)
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23253
diff
changeset
|
48 filepath = opener.join(f) |
aa19432764d6
transaction: handle missing file in backupentries (instead of using entries)
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23253
diff
changeset
|
49 backuppath = opener.join(b) |
aa19432764d6
transaction: handle missing file in backupentries (instead of using entries)
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23253
diff
changeset
|
50 try: |
aa19432764d6
transaction: handle missing file in backupentries (instead of using entries)
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23253
diff
changeset
|
51 util.copyfile(backuppath, filepath) |
aa19432764d6
transaction: handle missing file in backupentries (instead of using entries)
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23253
diff
changeset
|
52 backupfiles.append(b) |
aa19432764d6
transaction: handle missing file in backupentries (instead of using entries)
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23253
diff
changeset
|
53 except IOError: |
aa19432764d6
transaction: handle missing file in backupentries (instead of using entries)
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23253
diff
changeset
|
54 report(_("failed to recover %s\n") % f) |
aa19432764d6
transaction: handle missing file in backupentries (instead of using entries)
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23253
diff
changeset
|
55 raise |
aa19432764d6
transaction: handle missing file in backupentries (instead of using entries)
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23253
diff
changeset
|
56 else: |
23291
03d2d6931836
transaction: allow registering a temporary transaction file
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23290
diff
changeset
|
57 target = f or b |
23278
aa19432764d6
transaction: handle missing file in backupentries (instead of using entries)
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23253
diff
changeset
|
58 try: |
23291
03d2d6931836
transaction: allow registering a temporary transaction file
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23290
diff
changeset
|
59 opener.unlink(target) |
23278
aa19432764d6
transaction: handle missing file in backupentries (instead of using entries)
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23253
diff
changeset
|
60 except (IOError, OSError), inst: |
aa19432764d6
transaction: handle missing file in backupentries (instead of using entries)
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23253
diff
changeset
|
61 if inst.errno != errno.ENOENT: |
aa19432764d6
transaction: handle missing file in backupentries (instead of using entries)
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23253
diff
changeset
|
62 raise |
20882
5dffd06f1e50
transaction: add support for non-append files
Durham Goode <durham@fb.com>
parents:
20881
diff
changeset
|
63 |
20087
cf3b8285af00
transaction: take journal file path relative to vfs to use file API via vfs
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
20084
diff
changeset
|
64 opener.unlink(journal) |
20882
5dffd06f1e50
transaction: add support for non-append files
Durham Goode <durham@fb.com>
parents:
20881
diff
changeset
|
65 backuppath = "%s.backupfiles" % journal |
5dffd06f1e50
transaction: add support for non-append files
Durham Goode <durham@fb.com>
parents:
20881
diff
changeset
|
66 if opener.exists(backuppath): |
5dffd06f1e50
transaction: add support for non-append files
Durham Goode <durham@fb.com>
parents:
20881
diff
changeset
|
67 opener.unlink(backuppath) |
5dffd06f1e50
transaction: add support for non-append files
Durham Goode <durham@fb.com>
parents:
20881
diff
changeset
|
68 for f in backupfiles: |
23291
03d2d6931836
transaction: allow registering a temporary transaction file
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23290
diff
changeset
|
69 if opener.exists(f): |
03d2d6931836
transaction: allow registering a temporary transaction file
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23290
diff
changeset
|
70 opener.unlink(f) |
8294
48a382c23226
transaction: refactor transaction.abort and rollback to use the same code
Henrik Stuart <hg@hstuart.dk>
parents:
8290
diff
changeset
|
71 |
1559
59b3639df0a9
Convert all classes to new-style classes by deriving them from object.
Eric Hopper <hopper@omnifarious.org>
parents:
1541
diff
changeset
|
72 class transaction(object): |
20881
3c47677a8d04
transaction: add onclose/onabort hook for pre-close logic
Durham Goode <durham@fb.com>
parents:
20524
diff
changeset
|
73 def __init__(self, report, opener, journal, after=None, createmode=None, |
3c47677a8d04
transaction: add onclose/onabort hook for pre-close logic
Durham Goode <durham@fb.com>
parents:
20524
diff
changeset
|
74 onclose=None, onabort=None): |
3c47677a8d04
transaction: add onclose/onabort hook for pre-close logic
Durham Goode <durham@fb.com>
parents:
20524
diff
changeset
|
75 """Begin a new transaction |
3c47677a8d04
transaction: add onclose/onabort hook for pre-close logic
Durham Goode <durham@fb.com>
parents:
20524
diff
changeset
|
76 |
3c47677a8d04
transaction: add onclose/onabort hook for pre-close logic
Durham Goode <durham@fb.com>
parents:
20524
diff
changeset
|
77 Begins a new transaction that allows rolling back writes in the event of |
3c47677a8d04
transaction: add onclose/onabort hook for pre-close logic
Durham Goode <durham@fb.com>
parents:
20524
diff
changeset
|
78 an exception. |
3c47677a8d04
transaction: add onclose/onabort hook for pre-close logic
Durham Goode <durham@fb.com>
parents:
20524
diff
changeset
|
79 |
3c47677a8d04
transaction: add onclose/onabort hook for pre-close logic
Durham Goode <durham@fb.com>
parents:
20524
diff
changeset
|
80 * `after`: called after the transaction has been committed |
3c47677a8d04
transaction: add onclose/onabort hook for pre-close logic
Durham Goode <durham@fb.com>
parents:
20524
diff
changeset
|
81 * `createmode`: the mode of the journal file that will be created |
3c47677a8d04
transaction: add onclose/onabort hook for pre-close logic
Durham Goode <durham@fb.com>
parents:
20524
diff
changeset
|
82 * `onclose`: called as the transaction is closing, but before it is |
3c47677a8d04
transaction: add onclose/onabort hook for pre-close logic
Durham Goode <durham@fb.com>
parents:
20524
diff
changeset
|
83 closed |
3c47677a8d04
transaction: add onclose/onabort hook for pre-close logic
Durham Goode <durham@fb.com>
parents:
20524
diff
changeset
|
84 * `onabort`: called as the transaction is aborting, but before any files |
3c47677a8d04
transaction: add onclose/onabort hook for pre-close logic
Durham Goode <durham@fb.com>
parents:
20524
diff
changeset
|
85 have been truncated |
3c47677a8d04
transaction: add onclose/onabort hook for pre-close logic
Durham Goode <durham@fb.com>
parents:
20524
diff
changeset
|
86 """ |
1806
a2c69737e65e
Automatic nesting into running transactions in the same repository.
mason@suse.com
parents:
1559
diff
changeset
|
87 self.count = 1 |
11230
5116a077c3da
make transactions work on non-refcounted python implementations
Ronny Pfannschmidt <Ronny.Pfannschmidt@gmx.de>
parents:
10282
diff
changeset
|
88 self.usages = 1 |
582 | 89 self.report = report |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
90 self.opener = opener |
95 | 91 self.after = after |
20881
3c47677a8d04
transaction: add onclose/onabort hook for pre-close logic
Durham Goode <durham@fb.com>
parents:
20524
diff
changeset
|
92 self.onclose = onclose |
3c47677a8d04
transaction: add onclose/onabort hook for pre-close logic
Durham Goode <durham@fb.com>
parents:
20524
diff
changeset
|
93 self.onabort = onabort |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
94 self.entries = [] |
23249
84720eab4fbd
transaction: mark backup-related attributes private
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23248
diff
changeset
|
95 self.map = {} |
23279
e245775f8fd3
transaction: gather backupjournal logic together in the __init__
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23278
diff
changeset
|
96 self.journal = journal |
e245775f8fd3
transaction: gather backupjournal logic together in the __init__
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23278
diff
changeset
|
97 self._queue = [] |
e245775f8fd3
transaction: gather backupjournal logic together in the __init__
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23278
diff
changeset
|
98 # a dict of arguments to be passed to hooks |
e245775f8fd3
transaction: gather backupjournal logic together in the __init__
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23278
diff
changeset
|
99 self.hookargs = {} |
e245775f8fd3
transaction: gather backupjournal logic together in the __init__
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23278
diff
changeset
|
100 self.file = opener.open(self.journal, "w") |
e245775f8fd3
transaction: gather backupjournal logic together in the __init__
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23278
diff
changeset
|
101 |
23248
e754b62373ad
transaction: document the contents of `tr.backupentries`
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23247
diff
changeset
|
102 # a list of ('path', 'backuppath') entries. |
23278
aa19432764d6
transaction: handle missing file in backupentries (instead of using entries)
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23253
diff
changeset
|
103 # if 'backuppath' is empty, no file existed at backup time |
23291
03d2d6931836
transaction: allow registering a temporary transaction file
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23290
diff
changeset
|
104 # if 'path' is empty, this is a temporary transaction file |
23249
84720eab4fbd
transaction: mark backup-related attributes private
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23248
diff
changeset
|
105 self._backupentries = [] |
84720eab4fbd
transaction: mark backup-related attributes private
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23248
diff
changeset
|
106 self._backupmap = {} |
84720eab4fbd
transaction: mark backup-related attributes private
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23248
diff
changeset
|
107 self._backupjournal = "%s.backupfiles" % journal |
84720eab4fbd
transaction: mark backup-related attributes private
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23248
diff
changeset
|
108 self._backupsfile = opener.open(self._backupjournal, 'w') |
84720eab4fbd
transaction: mark backup-related attributes private
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23248
diff
changeset
|
109 self._backupsfile.write('%d\n' % version) |
23279
e245775f8fd3
transaction: gather backupjournal logic together in the __init__
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23278
diff
changeset
|
110 |
6065
53ed9b40cfc4
make the journal/undo files from transactions inherit the mode from .hg/store
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
5865
diff
changeset
|
111 if createmode is not None: |
20087
cf3b8285af00
transaction: take journal file path relative to vfs to use file API via vfs
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
20084
diff
changeset
|
112 opener.chmod(self.journal, createmode & 0666) |
23249
84720eab4fbd
transaction: mark backup-related attributes private
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23248
diff
changeset
|
113 opener.chmod(self._backupjournal, createmode & 0666) |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
114 |
22078
feb4797c676e
transaction: add a file generation mechanism
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22077
diff
changeset
|
115 # hold file generations to be performed on commit |
feb4797c676e
transaction: add a file generation mechanism
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22077
diff
changeset
|
116 self._filegenerators = {} |
23202
ea5af863fbff
transaction: add 'writepending' logic
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23103
diff
changeset
|
117 # hold callbalk to write pending data for hooks |
ea5af863fbff
transaction: add 'writepending' logic
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23103
diff
changeset
|
118 self._pendingcallback = {} |
ea5af863fbff
transaction: add 'writepending' logic
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23103
diff
changeset
|
119 # True is any pending data have been written ever |
ea5af863fbff
transaction: add 'writepending' logic
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23103
diff
changeset
|
120 self._anypending = False |
23204
10beda5bd2b7
transaction: allow registering a finalization callback
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23202
diff
changeset
|
121 # holds callback to call when writing the transaction |
10beda5bd2b7
transaction: allow registering a finalization callback
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23202
diff
changeset
|
122 self._finalizecallback = {} |
23220
3f543f6be500
transaction: allow registering a post-close callback
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23204
diff
changeset
|
123 # hold callbalk for post transaction close |
3f543f6be500
transaction: allow registering a post-close callback
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23204
diff
changeset
|
124 self._postclosecallback = {} |
22078
feb4797c676e
transaction: add a file generation mechanism
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22077
diff
changeset
|
125 |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
126 def __del__(self): |
558
0ceea19182a9
transaction: __del__ should do nothing if the journal already exists
mpm@selenic.com
parents:
515
diff
changeset
|
127 if self.journal: |
9693
c40a1ee20aa5
transaction: always remove empty journal on abort
Sune Foldager <cryo@cyanite.org>
parents:
9686
diff
changeset
|
128 self._abort() |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
129 |
8289
fe8a3e56039f
transaction: ensure finished transactions are not reused
Henrik Stuart <hg@hstuart.dk>
parents:
8225
diff
changeset
|
130 @active |
8363
c8e81f557da7
transaction: add atomic groups to transaction logic
Henrik Stuart <hg@hstuart.dk>
parents:
8294
diff
changeset
|
131 def startgroup(self): |
23250
8919dc7f2dbb
transaction: document startgroup and endgroup
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23249
diff
changeset
|
132 """delay registration of file entry |
8919dc7f2dbb
transaction: document startgroup and endgroup
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23249
diff
changeset
|
133 |
8919dc7f2dbb
transaction: document startgroup and endgroup
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23249
diff
changeset
|
134 This is used by strip to delay vision of strip offset. The transaction |
8919dc7f2dbb
transaction: document startgroup and endgroup
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23249
diff
changeset
|
135 sees either none or all of the strip actions to be done.""" |
23251
85c634ff395a
transaction: drop backupentries logic from startgroup and endgroup
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23250
diff
changeset
|
136 self._queue.append([]) |
8363
c8e81f557da7
transaction: add atomic groups to transaction logic
Henrik Stuart <hg@hstuart.dk>
parents:
8294
diff
changeset
|
137 |
c8e81f557da7
transaction: add atomic groups to transaction logic
Henrik Stuart <hg@hstuart.dk>
parents:
8294
diff
changeset
|
138 @active |
c8e81f557da7
transaction: add atomic groups to transaction logic
Henrik Stuart <hg@hstuart.dk>
parents:
8294
diff
changeset
|
139 def endgroup(self): |
23250
8919dc7f2dbb
transaction: document startgroup and endgroup
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23249
diff
changeset
|
140 """apply delayed registration of file entry. |
8919dc7f2dbb
transaction: document startgroup and endgroup
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23249
diff
changeset
|
141 |
8919dc7f2dbb
transaction: document startgroup and endgroup
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23249
diff
changeset
|
142 This is used by strip to delay vision of strip offset. The transaction |
8919dc7f2dbb
transaction: document startgroup and endgroup
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23249
diff
changeset
|
143 sees either none or all of the strip actions to be done.""" |
8363
c8e81f557da7
transaction: add atomic groups to transaction logic
Henrik Stuart <hg@hstuart.dk>
parents:
8294
diff
changeset
|
144 q = self._queue.pop() |
23253
8d84b7a2dd91
transaction: factorise append-only file registration
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23252
diff
changeset
|
145 for f, o, data in q: |
8d84b7a2dd91
transaction: factorise append-only file registration
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23252
diff
changeset
|
146 self._addentry(f, o, data) |
8363
c8e81f557da7
transaction: add atomic groups to transaction logic
Henrik Stuart <hg@hstuart.dk>
parents:
8294
diff
changeset
|
147 |
c8e81f557da7
transaction: add atomic groups to transaction logic
Henrik Stuart <hg@hstuart.dk>
parents:
8294
diff
changeset
|
148 @active |
2084 | 149 def add(self, file, offset, data=None): |
23252
70809438c644
transaction: document `tr.add`
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23251
diff
changeset
|
150 """record the state of an append-only file before update""" |
23249
84720eab4fbd
transaction: mark backup-related attributes private
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23248
diff
changeset
|
151 if file in self.map or file in self._backupmap: |
10282
08a0f04b56bd
many, many trivial check-code fixups
Matt Mackall <mpm@selenic.com>
parents:
10263
diff
changeset
|
152 return |
8363
c8e81f557da7
transaction: add atomic groups to transaction logic
Henrik Stuart <hg@hstuart.dk>
parents:
8294
diff
changeset
|
153 if self._queue: |
23251
85c634ff395a
transaction: drop backupentries logic from startgroup and endgroup
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23250
diff
changeset
|
154 self._queue[-1].append((file, offset, data)) |
8363
c8e81f557da7
transaction: add atomic groups to transaction logic
Henrik Stuart <hg@hstuart.dk>
parents:
8294
diff
changeset
|
155 return |
c8e81f557da7
transaction: add atomic groups to transaction logic
Henrik Stuart <hg@hstuart.dk>
parents:
8294
diff
changeset
|
156 |
23253
8d84b7a2dd91
transaction: factorise append-only file registration
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23252
diff
changeset
|
157 self._addentry(file, offset, data) |
8d84b7a2dd91
transaction: factorise append-only file registration
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23252
diff
changeset
|
158 |
8d84b7a2dd91
transaction: factorise append-only file registration
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23252
diff
changeset
|
159 def _addentry(self, file, offset, data): |
8d84b7a2dd91
transaction: factorise append-only file registration
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23252
diff
changeset
|
160 """add a append-only entry to memory and on-disk state""" |
8d84b7a2dd91
transaction: factorise append-only file registration
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23252
diff
changeset
|
161 if file in self.map or file in self._backupmap: |
8d84b7a2dd91
transaction: factorise append-only file registration
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23252
diff
changeset
|
162 return |
2084 | 163 self.entries.append((file, offset, data)) |
164 self.map[file] = len(self.entries) - 1 | |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
165 # add enough data to the journal to do the truncate |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
166 self.file.write("%s\0%d\n" % (file, offset)) |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
167 self.file.flush() |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
168 |
8289
fe8a3e56039f
transaction: ensure finished transactions are not reused
Henrik Stuart <hg@hstuart.dk>
parents:
8225
diff
changeset
|
169 @active |
22663
4c6198737ad8
transaction: allow generating file outside of store
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22662
diff
changeset
|
170 def addbackup(self, file, hardlink=True, vfs=None): |
20882
5dffd06f1e50
transaction: add support for non-append files
Durham Goode <durham@fb.com>
parents:
20881
diff
changeset
|
171 """Adds a backup of the file to the transaction |
5dffd06f1e50
transaction: add support for non-append files
Durham Goode <durham@fb.com>
parents:
20881
diff
changeset
|
172 |
5dffd06f1e50
transaction: add support for non-append files
Durham Goode <durham@fb.com>
parents:
20881
diff
changeset
|
173 Calling addbackup() creates a hardlink backup of the specified file |
5dffd06f1e50
transaction: add support for non-append files
Durham Goode <durham@fb.com>
parents:
20881
diff
changeset
|
174 that is used to recover the file in the event of the transaction |
5dffd06f1e50
transaction: add support for non-append files
Durham Goode <durham@fb.com>
parents:
20881
diff
changeset
|
175 aborting. |
5dffd06f1e50
transaction: add support for non-append files
Durham Goode <durham@fb.com>
parents:
20881
diff
changeset
|
176 |
5dffd06f1e50
transaction: add support for non-append files
Durham Goode <durham@fb.com>
parents:
20881
diff
changeset
|
177 * `file`: the file path, relative to .hg/store |
5dffd06f1e50
transaction: add support for non-append files
Durham Goode <durham@fb.com>
parents:
20881
diff
changeset
|
178 * `hardlink`: use a hardlink to quickly create the backup |
5dffd06f1e50
transaction: add support for non-append files
Durham Goode <durham@fb.com>
parents:
20881
diff
changeset
|
179 """ |
23251
85c634ff395a
transaction: drop backupentries logic from startgroup and endgroup
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23250
diff
changeset
|
180 if self._queue: |
85c634ff395a
transaction: drop backupentries logic from startgroup and endgroup
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23250
diff
changeset
|
181 msg = 'cannot use transaction.addbackup inside "group"' |
85c634ff395a
transaction: drop backupentries logic from startgroup and endgroup
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23250
diff
changeset
|
182 raise RuntimeError(msg) |
20882
5dffd06f1e50
transaction: add support for non-append files
Durham Goode <durham@fb.com>
parents:
20881
diff
changeset
|
183 |
23249
84720eab4fbd
transaction: mark backup-related attributes private
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23248
diff
changeset
|
184 if file in self.map or file in self._backupmap: |
20882
5dffd06f1e50
transaction: add support for non-append files
Durham Goode <durham@fb.com>
parents:
20881
diff
changeset
|
185 return |
22077
2990ce46fc2d
transaction: backup file in a dedicated "namespace"
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22076
diff
changeset
|
186 backupfile = "%s.backup.%s" % (self.journal, file) |
22663
4c6198737ad8
transaction: allow generating file outside of store
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22662
diff
changeset
|
187 if vfs is None: |
4c6198737ad8
transaction: allow generating file outside of store
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22662
diff
changeset
|
188 vfs = self.opener |
4c6198737ad8
transaction: allow generating file outside of store
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22662
diff
changeset
|
189 if vfs.exists(file): |
4c6198737ad8
transaction: allow generating file outside of store
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22662
diff
changeset
|
190 filepath = vfs.join(file) |
20882
5dffd06f1e50
transaction: add support for non-append files
Durham Goode <durham@fb.com>
parents:
20881
diff
changeset
|
191 backuppath = self.opener.join(backupfile) |
5dffd06f1e50
transaction: add support for non-append files
Durham Goode <durham@fb.com>
parents:
20881
diff
changeset
|
192 util.copyfiles(filepath, backuppath, hardlink=hardlink) |
5dffd06f1e50
transaction: add support for non-append files
Durham Goode <durham@fb.com>
parents:
20881
diff
changeset
|
193 else: |
23278
aa19432764d6
transaction: handle missing file in backupentries (instead of using entries)
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23253
diff
changeset
|
194 backupfile = '' |
20882
5dffd06f1e50
transaction: add support for non-append files
Durham Goode <durham@fb.com>
parents:
20881
diff
changeset
|
195 |
23283
b04263c38a92
transaction: extract backupentry registration in a dedicated function
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23282
diff
changeset
|
196 self._addbackupentry((file, backupfile)) |
b04263c38a92
transaction: extract backupentry registration in a dedicated function
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23282
diff
changeset
|
197 |
b04263c38a92
transaction: extract backupentry registration in a dedicated function
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23282
diff
changeset
|
198 def _addbackupentry(self, entry): |
b04263c38a92
transaction: extract backupentry registration in a dedicated function
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23282
diff
changeset
|
199 """register a new backup entry and write it to disk""" |
b04263c38a92
transaction: extract backupentry registration in a dedicated function
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23282
diff
changeset
|
200 self._backupentries.append(entry) |
23249
84720eab4fbd
transaction: mark backup-related attributes private
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23248
diff
changeset
|
201 self._backupmap[file] = len(self._backupentries) - 1 |
23283
b04263c38a92
transaction: extract backupentry registration in a dedicated function
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23282
diff
changeset
|
202 self._backupsfile.write("%s\0%s\n" % entry) |
23249
84720eab4fbd
transaction: mark backup-related attributes private
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23248
diff
changeset
|
203 self._backupsfile.flush() |
20882
5dffd06f1e50
transaction: add support for non-append files
Durham Goode <durham@fb.com>
parents:
20881
diff
changeset
|
204 |
5dffd06f1e50
transaction: add support for non-append files
Durham Goode <durham@fb.com>
parents:
20881
diff
changeset
|
205 @active |
23291
03d2d6931836
transaction: allow registering a temporary transaction file
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23290
diff
changeset
|
206 def registertmp(self, tmpfile): |
03d2d6931836
transaction: allow registering a temporary transaction file
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23290
diff
changeset
|
207 """register a temporary transaction file |
03d2d6931836
transaction: allow registering a temporary transaction file
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23290
diff
changeset
|
208 |
03d2d6931836
transaction: allow registering a temporary transaction file
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23290
diff
changeset
|
209 Such file will be delete when the transaction exit (on both failure and |
03d2d6931836
transaction: allow registering a temporary transaction file
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23290
diff
changeset
|
210 success). |
03d2d6931836
transaction: allow registering a temporary transaction file
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23290
diff
changeset
|
211 """ |
03d2d6931836
transaction: allow registering a temporary transaction file
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23290
diff
changeset
|
212 self._addbackupentry(('', tmpfile)) |
03d2d6931836
transaction: allow registering a temporary transaction file
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23290
diff
changeset
|
213 |
03d2d6931836
transaction: allow registering a temporary transaction file
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23290
diff
changeset
|
214 @active |
22663
4c6198737ad8
transaction: allow generating file outside of store
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22662
diff
changeset
|
215 def addfilegenerator(self, genid, filenames, genfunc, order=0, vfs=None): |
22078
feb4797c676e
transaction: add a file generation mechanism
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22077
diff
changeset
|
216 """add a function to generates some files at transaction commit |
feb4797c676e
transaction: add a file generation mechanism
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22077
diff
changeset
|
217 |
feb4797c676e
transaction: add a file generation mechanism
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22077
diff
changeset
|
218 The `genfunc` argument is a function capable of generating proper |
feb4797c676e
transaction: add a file generation mechanism
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22077
diff
changeset
|
219 content of each entry in the `filename` tuple. |
feb4797c676e
transaction: add a file generation mechanism
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22077
diff
changeset
|
220 |
feb4797c676e
transaction: add a file generation mechanism
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22077
diff
changeset
|
221 At transaction close time, `genfunc` will be called with one file |
feb4797c676e
transaction: add a file generation mechanism
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22077
diff
changeset
|
222 object argument per entries in `filenames`. |
feb4797c676e
transaction: add a file generation mechanism
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22077
diff
changeset
|
223 |
feb4797c676e
transaction: add a file generation mechanism
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22077
diff
changeset
|
224 The transaction itself is responsible for the backup, creation and |
feb4797c676e
transaction: add a file generation mechanism
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22077
diff
changeset
|
225 final write of such file. |
feb4797c676e
transaction: add a file generation mechanism
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22077
diff
changeset
|
226 |
feb4797c676e
transaction: add a file generation mechanism
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22077
diff
changeset
|
227 The `genid` argument is used to ensure the same set of file is only |
feb4797c676e
transaction: add a file generation mechanism
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22077
diff
changeset
|
228 generated once. Call to `addfilegenerator` for a `genid` already |
feb4797c676e
transaction: add a file generation mechanism
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22077
diff
changeset
|
229 present will overwrite the old entry. |
feb4797c676e
transaction: add a file generation mechanism
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22077
diff
changeset
|
230 |
feb4797c676e
transaction: add a file generation mechanism
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22077
diff
changeset
|
231 The `order` argument may be used to control the order in which multiple |
feb4797c676e
transaction: add a file generation mechanism
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22077
diff
changeset
|
232 generator will be executed. |
feb4797c676e
transaction: add a file generation mechanism
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22077
diff
changeset
|
233 """ |
22663
4c6198737ad8
transaction: allow generating file outside of store
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22662
diff
changeset
|
234 # For now, we are unable to do proper backup and restore of custom vfs |
4c6198737ad8
transaction: allow generating file outside of store
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22662
diff
changeset
|
235 # but for bookmarks that are handled outside this mechanism. |
4c6198737ad8
transaction: allow generating file outside of store
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22662
diff
changeset
|
236 assert vfs is None or filenames == ('bookmarks',) |
4c6198737ad8
transaction: allow generating file outside of store
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22662
diff
changeset
|
237 self._filegenerators[genid] = (order, filenames, genfunc, vfs) |
22078
feb4797c676e
transaction: add a file generation mechanism
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22077
diff
changeset
|
238 |
23102
16da812ad970
transaction: extract file generation into its own function
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23065
diff
changeset
|
239 def _generatefiles(self): |
16da812ad970
transaction: extract file generation into its own function
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23065
diff
changeset
|
240 # write files registered for generation |
16da812ad970
transaction: extract file generation into its own function
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23065
diff
changeset
|
241 for entry in sorted(self._filegenerators.values()): |
16da812ad970
transaction: extract file generation into its own function
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23065
diff
changeset
|
242 order, filenames, genfunc, vfs = entry |
16da812ad970
transaction: extract file generation into its own function
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23065
diff
changeset
|
243 if vfs is None: |
16da812ad970
transaction: extract file generation into its own function
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23065
diff
changeset
|
244 vfs = self.opener |
16da812ad970
transaction: extract file generation into its own function
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23065
diff
changeset
|
245 files = [] |
16da812ad970
transaction: extract file generation into its own function
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23065
diff
changeset
|
246 try: |
16da812ad970
transaction: extract file generation into its own function
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23065
diff
changeset
|
247 for name in filenames: |
16da812ad970
transaction: extract file generation into its own function
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23065
diff
changeset
|
248 # Some files are already backed up when creating the |
16da812ad970
transaction: extract file generation into its own function
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23065
diff
changeset
|
249 # localrepo. Until this is properly fixed we disable the |
16da812ad970
transaction: extract file generation into its own function
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23065
diff
changeset
|
250 # backup for them. |
16da812ad970
transaction: extract file generation into its own function
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23065
diff
changeset
|
251 if name not in ('phaseroots', 'bookmarks'): |
16da812ad970
transaction: extract file generation into its own function
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23065
diff
changeset
|
252 self.addbackup(name) |
16da812ad970
transaction: extract file generation into its own function
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23065
diff
changeset
|
253 files.append(vfs(name, 'w', atomictemp=True)) |
16da812ad970
transaction: extract file generation into its own function
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23065
diff
changeset
|
254 genfunc(*files) |
16da812ad970
transaction: extract file generation into its own function
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23065
diff
changeset
|
255 finally: |
16da812ad970
transaction: extract file generation into its own function
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23065
diff
changeset
|
256 for f in files: |
16da812ad970
transaction: extract file generation into its own function
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23065
diff
changeset
|
257 f.close() |
16da812ad970
transaction: extract file generation into its own function
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23065
diff
changeset
|
258 |
22078
feb4797c676e
transaction: add a file generation mechanism
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22077
diff
changeset
|
259 @active |
2084 | 260 def find(self, file): |
261 if file in self.map: | |
262 return self.entries[self.map[file]] | |
23249
84720eab4fbd
transaction: mark backup-related attributes private
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23248
diff
changeset
|
263 if file in self._backupmap: |
84720eab4fbd
transaction: mark backup-related attributes private
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23248
diff
changeset
|
264 return self._backupentries[self._backupmap[file]] |
2084 | 265 return None |
266 | |
8289
fe8a3e56039f
transaction: ensure finished transactions are not reused
Henrik Stuart <hg@hstuart.dk>
parents:
8225
diff
changeset
|
267 @active |
2084 | 268 def replace(self, file, offset, data=None): |
8363
c8e81f557da7
transaction: add atomic groups to transaction logic
Henrik Stuart <hg@hstuart.dk>
parents:
8294
diff
changeset
|
269 ''' |
c8e81f557da7
transaction: add atomic groups to transaction logic
Henrik Stuart <hg@hstuart.dk>
parents:
8294
diff
changeset
|
270 replace can only replace already committed entries |
c8e81f557da7
transaction: add atomic groups to transaction logic
Henrik Stuart <hg@hstuart.dk>
parents:
8294
diff
changeset
|
271 that are not pending in the queue |
c8e81f557da7
transaction: add atomic groups to transaction logic
Henrik Stuart <hg@hstuart.dk>
parents:
8294
diff
changeset
|
272 ''' |
c8e81f557da7
transaction: add atomic groups to transaction logic
Henrik Stuart <hg@hstuart.dk>
parents:
8294
diff
changeset
|
273 |
2084 | 274 if file not in self.map: |
275 raise KeyError(file) | |
276 index = self.map[file] | |
277 self.entries[index] = (file, offset, data) | |
278 self.file.write("%s\0%d\n" % (file, offset)) | |
279 self.file.flush() | |
280 | |
8289
fe8a3e56039f
transaction: ensure finished transactions are not reused
Henrik Stuart <hg@hstuart.dk>
parents:
8225
diff
changeset
|
281 @active |
1806
a2c69737e65e
Automatic nesting into running transactions in the same repository.
mason@suse.com
parents:
1559
diff
changeset
|
282 def nest(self): |
a2c69737e65e
Automatic nesting into running transactions in the same repository.
mason@suse.com
parents:
1559
diff
changeset
|
283 self.count += 1 |
11230
5116a077c3da
make transactions work on non-refcounted python implementations
Ronny Pfannschmidt <Ronny.Pfannschmidt@gmx.de>
parents:
10282
diff
changeset
|
284 self.usages += 1 |
1806
a2c69737e65e
Automatic nesting into running transactions in the same repository.
mason@suse.com
parents:
1559
diff
changeset
|
285 return self |
a2c69737e65e
Automatic nesting into running transactions in the same repository.
mason@suse.com
parents:
1559
diff
changeset
|
286 |
11230
5116a077c3da
make transactions work on non-refcounted python implementations
Ronny Pfannschmidt <Ronny.Pfannschmidt@gmx.de>
parents:
10282
diff
changeset
|
287 def release(self): |
5116a077c3da
make transactions work on non-refcounted python implementations
Ronny Pfannschmidt <Ronny.Pfannschmidt@gmx.de>
parents:
10282
diff
changeset
|
288 if self.count > 0: |
5116a077c3da
make transactions work on non-refcounted python implementations
Ronny Pfannschmidt <Ronny.Pfannschmidt@gmx.de>
parents:
10282
diff
changeset
|
289 self.usages -= 1 |
11685 | 290 # if the transaction scopes are left without being closed, fail |
11230
5116a077c3da
make transactions work on non-refcounted python implementations
Ronny Pfannschmidt <Ronny.Pfannschmidt@gmx.de>
parents:
10282
diff
changeset
|
291 if self.count > 0 and self.usages == 0: |
5116a077c3da
make transactions work on non-refcounted python implementations
Ronny Pfannschmidt <Ronny.Pfannschmidt@gmx.de>
parents:
10282
diff
changeset
|
292 self._abort() |
5116a077c3da
make transactions work on non-refcounted python implementations
Ronny Pfannschmidt <Ronny.Pfannschmidt@gmx.de>
parents:
10282
diff
changeset
|
293 |
1806
a2c69737e65e
Automatic nesting into running transactions in the same repository.
mason@suse.com
parents:
1559
diff
changeset
|
294 def running(self): |
a2c69737e65e
Automatic nesting into running transactions in the same repository.
mason@suse.com
parents:
1559
diff
changeset
|
295 return self.count > 0 |
a2c69737e65e
Automatic nesting into running transactions in the same repository.
mason@suse.com
parents:
1559
diff
changeset
|
296 |
23202
ea5af863fbff
transaction: add 'writepending' logic
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23103
diff
changeset
|
297 def addpending(self, category, callback): |
ea5af863fbff
transaction: add 'writepending' logic
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23103
diff
changeset
|
298 """add a callback to be called when the transaction is pending |
ea5af863fbff
transaction: add 'writepending' logic
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23103
diff
changeset
|
299 |
23280
b01c491af0cf
transaction: pass the transaction to 'pending' callback
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23279
diff
changeset
|
300 The transaction will be given as callback's first argument. |
b01c491af0cf
transaction: pass the transaction to 'pending' callback
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23279
diff
changeset
|
301 |
23202
ea5af863fbff
transaction: add 'writepending' logic
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23103
diff
changeset
|
302 Category is a unique identifier to allow overwriting an old callback |
ea5af863fbff
transaction: add 'writepending' logic
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23103
diff
changeset
|
303 with a newer callback. |
ea5af863fbff
transaction: add 'writepending' logic
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23103
diff
changeset
|
304 """ |
ea5af863fbff
transaction: add 'writepending' logic
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23103
diff
changeset
|
305 self._pendingcallback[category] = callback |
ea5af863fbff
transaction: add 'writepending' logic
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23103
diff
changeset
|
306 |
ea5af863fbff
transaction: add 'writepending' logic
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23103
diff
changeset
|
307 @active |
ea5af863fbff
transaction: add 'writepending' logic
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23103
diff
changeset
|
308 def writepending(self): |
ea5af863fbff
transaction: add 'writepending' logic
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23103
diff
changeset
|
309 '''write pending file to temporary version |
ea5af863fbff
transaction: add 'writepending' logic
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23103
diff
changeset
|
310 |
ea5af863fbff
transaction: add 'writepending' logic
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23103
diff
changeset
|
311 This is used to allow hooks to view a transaction before commit''' |
ea5af863fbff
transaction: add 'writepending' logic
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23103
diff
changeset
|
312 categories = sorted(self._pendingcallback) |
ea5af863fbff
transaction: add 'writepending' logic
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23103
diff
changeset
|
313 for cat in categories: |
ea5af863fbff
transaction: add 'writepending' logic
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23103
diff
changeset
|
314 # remove callback since the data will have been flushed |
23280
b01c491af0cf
transaction: pass the transaction to 'pending' callback
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23279
diff
changeset
|
315 any = self._pendingcallback.pop(cat)(self) |
23202
ea5af863fbff
transaction: add 'writepending' logic
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23103
diff
changeset
|
316 self._anypending = self._anypending or any |
ea5af863fbff
transaction: add 'writepending' logic
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23103
diff
changeset
|
317 return self._anypending |
ea5af863fbff
transaction: add 'writepending' logic
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23103
diff
changeset
|
318 |
8289
fe8a3e56039f
transaction: ensure finished transactions are not reused
Henrik Stuart <hg@hstuart.dk>
parents:
8225
diff
changeset
|
319 @active |
23204
10beda5bd2b7
transaction: allow registering a finalization callback
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23202
diff
changeset
|
320 def addfinalize(self, category, callback): |
10beda5bd2b7
transaction: allow registering a finalization callback
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23202
diff
changeset
|
321 """add a callback to be called when the transaction is closed |
10beda5bd2b7
transaction: allow registering a finalization callback
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23202
diff
changeset
|
322 |
23281
f60ed8cf4afc
transaction: pass the transaction to 'finalize' callback
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23280
diff
changeset
|
323 The transaction will be given as callback's first argument. |
f60ed8cf4afc
transaction: pass the transaction to 'finalize' callback
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23280
diff
changeset
|
324 |
23204
10beda5bd2b7
transaction: allow registering a finalization callback
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23202
diff
changeset
|
325 Category is a unique identifier to allow overwriting old callbacks with |
10beda5bd2b7
transaction: allow registering a finalization callback
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23202
diff
changeset
|
326 newer callbacks. |
10beda5bd2b7
transaction: allow registering a finalization callback
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23202
diff
changeset
|
327 """ |
10beda5bd2b7
transaction: allow registering a finalization callback
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23202
diff
changeset
|
328 self._finalizecallback[category] = callback |
10beda5bd2b7
transaction: allow registering a finalization callback
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23202
diff
changeset
|
329 |
10beda5bd2b7
transaction: allow registering a finalization callback
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23202
diff
changeset
|
330 @active |
23220
3f543f6be500
transaction: allow registering a post-close callback
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23204
diff
changeset
|
331 def addpostclose(self, category, callback): |
3f543f6be500
transaction: allow registering a post-close callback
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23204
diff
changeset
|
332 """add a callback to be called after the transaction is closed |
3f543f6be500
transaction: allow registering a post-close callback
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23204
diff
changeset
|
333 |
23282
6c1351352b6c
transaction: pass the transaction to 'postclose' callback
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23281
diff
changeset
|
334 The transaction will be given as callback's first argument. |
6c1351352b6c
transaction: pass the transaction to 'postclose' callback
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23281
diff
changeset
|
335 |
23220
3f543f6be500
transaction: allow registering a post-close callback
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23204
diff
changeset
|
336 Category is a unique identifier to allow overwriting an old callback |
3f543f6be500
transaction: allow registering a post-close callback
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23204
diff
changeset
|
337 with a newer callback. |
3f543f6be500
transaction: allow registering a post-close callback
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23204
diff
changeset
|
338 """ |
3f543f6be500
transaction: allow registering a post-close callback
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23204
diff
changeset
|
339 self._postclosecallback[category] = callback |
3f543f6be500
transaction: allow registering a post-close callback
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23204
diff
changeset
|
340 |
3f543f6be500
transaction: allow registering a post-close callback
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23204
diff
changeset
|
341 @active |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
342 def close(self): |
9220
8a4da1388553
transaction: document close(), abort() methods
Greg Ward <greg-hg@gerg.ca>
parents:
9094
diff
changeset
|
343 '''commit the transaction''' |
23290
59513ec76748
transaction: always generate file on close
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23283
diff
changeset
|
344 if self.count == 1: |
23103
29bfa964d6d8
transaction: only generate file when we actually close the transaction
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23102
diff
changeset
|
345 self._generatefiles() |
23204
10beda5bd2b7
transaction: allow registering a finalization callback
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23202
diff
changeset
|
346 categories = sorted(self._finalizecallback) |
10beda5bd2b7
transaction: allow registering a finalization callback
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23202
diff
changeset
|
347 for cat in categories: |
23281
f60ed8cf4afc
transaction: pass the transaction to 'finalize' callback
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23280
diff
changeset
|
348 self._finalizecallback[cat](self) |
23290
59513ec76748
transaction: always generate file on close
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23283
diff
changeset
|
349 if self.onclose is not None: |
59513ec76748
transaction: always generate file on close
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23283
diff
changeset
|
350 self.onclose() |
20881
3c47677a8d04
transaction: add onclose/onabort hook for pre-close logic
Durham Goode <durham@fb.com>
parents:
20524
diff
changeset
|
351 |
1806
a2c69737e65e
Automatic nesting into running transactions in the same repository.
mason@suse.com
parents:
1559
diff
changeset
|
352 self.count -= 1 |
a2c69737e65e
Automatic nesting into running transactions in the same repository.
mason@suse.com
parents:
1559
diff
changeset
|
353 if self.count != 0: |
a2c69737e65e
Automatic nesting into running transactions in the same repository.
mason@suse.com
parents:
1559
diff
changeset
|
354 return |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
355 self.file.close() |
23249
84720eab4fbd
transaction: mark backup-related attributes private
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23248
diff
changeset
|
356 self._backupsfile.close() |
23291
03d2d6931836
transaction: allow registering a temporary transaction file
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23290
diff
changeset
|
357 # cleanup temporary files |
03d2d6931836
transaction: allow registering a temporary transaction file
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23290
diff
changeset
|
358 for f, b in self._backupentries: |
03d2d6931836
transaction: allow registering a temporary transaction file
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23290
diff
changeset
|
359 if not f and b and self.opener.exists(b): |
03d2d6931836
transaction: allow registering a temporary transaction file
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23290
diff
changeset
|
360 self.opener.unlink(b) |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
361 self.entries = [] |
95 | 362 if self.after: |
785 | 363 self.after() |
20087
cf3b8285af00
transaction: take journal file path relative to vfs to use file API via vfs
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
20084
diff
changeset
|
364 if self.opener.isfile(self.journal): |
cf3b8285af00
transaction: take journal file path relative to vfs to use file API via vfs
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
20084
diff
changeset
|
365 self.opener.unlink(self.journal) |
23249
84720eab4fbd
transaction: mark backup-related attributes private
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23248
diff
changeset
|
366 if self.opener.isfile(self._backupjournal): |
84720eab4fbd
transaction: mark backup-related attributes private
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23248
diff
changeset
|
367 self.opener.unlink(self._backupjournal) |
84720eab4fbd
transaction: mark backup-related attributes private
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23248
diff
changeset
|
368 for _f, b in self._backupentries: |
23291
03d2d6931836
transaction: allow registering a temporary transaction file
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23290
diff
changeset
|
369 if b and self.opener.exists(b): |
23278
aa19432764d6
transaction: handle missing file in backupentries (instead of using entries)
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23253
diff
changeset
|
370 self.opener.unlink(b) |
23249
84720eab4fbd
transaction: mark backup-related attributes private
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23248
diff
changeset
|
371 self._backupentries = [] |
573 | 372 self.journal = None |
23220
3f543f6be500
transaction: allow registering a post-close callback
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23204
diff
changeset
|
373 # run post close action |
3f543f6be500
transaction: allow registering a post-close callback
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23204
diff
changeset
|
374 categories = sorted(self._postclosecallback) |
3f543f6be500
transaction: allow registering a post-close callback
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23204
diff
changeset
|
375 for cat in categories: |
23282
6c1351352b6c
transaction: pass the transaction to 'postclose' callback
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23281
diff
changeset
|
376 self._postclosecallback[cat](self) |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
377 |
8289
fe8a3e56039f
transaction: ensure finished transactions are not reused
Henrik Stuart <hg@hstuart.dk>
parents:
8225
diff
changeset
|
378 @active |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
379 def abort(self): |
9220
8a4da1388553
transaction: document close(), abort() methods
Greg Ward <greg-hg@gerg.ca>
parents:
9094
diff
changeset
|
380 '''abort the transaction (generally called on error, or when the |
8a4da1388553
transaction: document close(), abort() methods
Greg Ward <greg-hg@gerg.ca>
parents:
9094
diff
changeset
|
381 transaction is not explicitly committed before going out of |
8a4da1388553
transaction: document close(), abort() methods
Greg Ward <greg-hg@gerg.ca>
parents:
9094
diff
changeset
|
382 scope)''' |
8289
fe8a3e56039f
transaction: ensure finished transactions are not reused
Henrik Stuart <hg@hstuart.dk>
parents:
8225
diff
changeset
|
383 self._abort() |
fe8a3e56039f
transaction: ensure finished transactions are not reused
Henrik Stuart <hg@hstuart.dk>
parents:
8225
diff
changeset
|
384 |
fe8a3e56039f
transaction: ensure finished transactions are not reused
Henrik Stuart <hg@hstuart.dk>
parents:
8225
diff
changeset
|
385 def _abort(self): |
8290
560af1bbfd6e
transaction: reset transaction on abort
Henrik Stuart <hg@hstuart.dk>
parents:
8289
diff
changeset
|
386 self.count = 0 |
11230
5116a077c3da
make transactions work on non-refcounted python implementations
Ronny Pfannschmidt <Ronny.Pfannschmidt@gmx.de>
parents:
10282
diff
changeset
|
387 self.usages = 0 |
8290
560af1bbfd6e
transaction: reset transaction on abort
Henrik Stuart <hg@hstuart.dk>
parents:
8289
diff
changeset
|
388 self.file.close() |
23249
84720eab4fbd
transaction: mark backup-related attributes private
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23248
diff
changeset
|
389 self._backupsfile.close() |
8290
560af1bbfd6e
transaction: reset transaction on abort
Henrik Stuart <hg@hstuart.dk>
parents:
8289
diff
changeset
|
390 |
20881
3c47677a8d04
transaction: add onclose/onabort hook for pre-close logic
Durham Goode <durham@fb.com>
parents:
20524
diff
changeset
|
391 if self.onabort is not None: |
3c47677a8d04
transaction: add onclose/onabort hook for pre-close logic
Durham Goode <durham@fb.com>
parents:
20524
diff
changeset
|
392 self.onabort() |
3c47677a8d04
transaction: add onclose/onabort hook for pre-close logic
Durham Goode <durham@fb.com>
parents:
20524
diff
changeset
|
393 |
10228
056c366fea8c
transaction: initialize self.journal to None after deletion
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
9693
diff
changeset
|
394 try: |
23249
84720eab4fbd
transaction: mark backup-related attributes private
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23248
diff
changeset
|
395 if not self.entries and not self._backupentries: |
10228
056c366fea8c
transaction: initialize self.journal to None after deletion
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
9693
diff
changeset
|
396 if self.journal: |
20087
cf3b8285af00
transaction: take journal file path relative to vfs to use file API via vfs
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
20084
diff
changeset
|
397 self.opener.unlink(self.journal) |
23249
84720eab4fbd
transaction: mark backup-related attributes private
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23248
diff
changeset
|
398 if self._backupjournal: |
84720eab4fbd
transaction: mark backup-related attributes private
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23248
diff
changeset
|
399 self.opener.unlink(self._backupjournal) |
10228
056c366fea8c
transaction: initialize self.journal to None after deletion
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
9693
diff
changeset
|
400 return |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
401 |
10228
056c366fea8c
transaction: initialize self.journal to None after deletion
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
9693
diff
changeset
|
402 self.report(_("transaction abort!\n")) |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
403 |
108 | 404 try: |
10282
08a0f04b56bd
many, many trivial check-code fixups
Matt Mackall <mpm@selenic.com>
parents:
10263
diff
changeset
|
405 _playback(self.journal, self.report, self.opener, |
23249
84720eab4fbd
transaction: mark backup-related attributes private
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23248
diff
changeset
|
406 self.entries, self._backupentries, False) |
8294
48a382c23226
transaction: refactor transaction.abort and rollback to use the same code
Henrik Stuart <hg@hstuart.dk>
parents:
8290
diff
changeset
|
407 self.report(_("rollback completed\n")) |
16689
f366d4c2ff34
cleanup: replace naked excepts with except Exception: ...
Brodie Rao <brodie@sf.io>
parents:
13408
diff
changeset
|
408 except Exception: |
8294
48a382c23226
transaction: refactor transaction.abort and rollback to use the same code
Henrik Stuart <hg@hstuart.dk>
parents:
8290
diff
changeset
|
409 self.report(_("rollback failed - please run hg recover\n")) |
48a382c23226
transaction: refactor transaction.abort and rollback to use the same code
Henrik Stuart <hg@hstuart.dk>
parents:
8290
diff
changeset
|
410 finally: |
48a382c23226
transaction: refactor transaction.abort and rollback to use the same code
Henrik Stuart <hg@hstuart.dk>
parents:
8290
diff
changeset
|
411 self.journal = None |
8290
560af1bbfd6e
transaction: reset transaction on abort
Henrik Stuart <hg@hstuart.dk>
parents:
8289
diff
changeset
|
412 |
560af1bbfd6e
transaction: reset transaction on abort
Henrik Stuart <hg@hstuart.dk>
parents:
8289
diff
changeset
|
413 |
8294
48a382c23226
transaction: refactor transaction.abort and rollback to use the same code
Henrik Stuart <hg@hstuart.dk>
parents:
8290
diff
changeset
|
414 def rollback(opener, file, report): |
20882
5dffd06f1e50
transaction: add support for non-append files
Durham Goode <durham@fb.com>
parents:
20881
diff
changeset
|
415 """Rolls back the transaction contained in the given file |
5dffd06f1e50
transaction: add support for non-append files
Durham Goode <durham@fb.com>
parents:
20881
diff
changeset
|
416 |
5dffd06f1e50
transaction: add support for non-append files
Durham Goode <durham@fb.com>
parents:
20881
diff
changeset
|
417 Reads the entries in the specified file, and the corresponding |
5dffd06f1e50
transaction: add support for non-append files
Durham Goode <durham@fb.com>
parents:
20881
diff
changeset
|
418 '*.backupfiles' file, to recover from an incomplete transaction. |
5dffd06f1e50
transaction: add support for non-append files
Durham Goode <durham@fb.com>
parents:
20881
diff
changeset
|
419 |
5dffd06f1e50
transaction: add support for non-append files
Durham Goode <durham@fb.com>
parents:
20881
diff
changeset
|
420 * `file`: a file containing a list of entries, specifying where |
5dffd06f1e50
transaction: add support for non-append files
Durham Goode <durham@fb.com>
parents:
20881
diff
changeset
|
421 to truncate each file. The file should contain a list of |
5dffd06f1e50
transaction: add support for non-append files
Durham Goode <durham@fb.com>
parents:
20881
diff
changeset
|
422 file\0offset pairs, delimited by newlines. The corresponding |
5dffd06f1e50
transaction: add support for non-append files
Durham Goode <durham@fb.com>
parents:
20881
diff
changeset
|
423 '*.backupfiles' file should contain a list of file\0backupfile |
5dffd06f1e50
transaction: add support for non-append files
Durham Goode <durham@fb.com>
parents:
20881
diff
changeset
|
424 pairs, delimited by \0. |
5dffd06f1e50
transaction: add support for non-append files
Durham Goode <durham@fb.com>
parents:
20881
diff
changeset
|
425 """ |
8294
48a382c23226
transaction: refactor transaction.abort and rollback to use the same code
Henrik Stuart <hg@hstuart.dk>
parents:
8290
diff
changeset
|
426 entries = [] |
20882
5dffd06f1e50
transaction: add support for non-append files
Durham Goode <durham@fb.com>
parents:
20881
diff
changeset
|
427 backupentries = [] |
8294
48a382c23226
transaction: refactor transaction.abort and rollback to use the same code
Henrik Stuart <hg@hstuart.dk>
parents:
8290
diff
changeset
|
428 |
20087
cf3b8285af00
transaction: take journal file path relative to vfs to use file API via vfs
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
20084
diff
changeset
|
429 fp = opener.open(file) |
13400
14f3795a5ed7
explicitly close files
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents:
11685
diff
changeset
|
430 lines = fp.readlines() |
14f3795a5ed7
explicitly close files
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents:
11685
diff
changeset
|
431 fp.close() |
14f3795a5ed7
explicitly close files
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents:
11685
diff
changeset
|
432 for l in lines: |
20524
28b8ff84db3f
journal: report parsing errors on recover/rollback (issue4172)
Matt Mackall <mpm@selenic.com>
parents:
20087
diff
changeset
|
433 try: |
28b8ff84db3f
journal: report parsing errors on recover/rollback (issue4172)
Matt Mackall <mpm@selenic.com>
parents:
20087
diff
changeset
|
434 f, o = l.split('\0') |
28b8ff84db3f
journal: report parsing errors on recover/rollback (issue4172)
Matt Mackall <mpm@selenic.com>
parents:
20087
diff
changeset
|
435 entries.append((f, int(o), None)) |
28b8ff84db3f
journal: report parsing errors on recover/rollback (issue4172)
Matt Mackall <mpm@selenic.com>
parents:
20087
diff
changeset
|
436 except ValueError: |
28b8ff84db3f
journal: report parsing errors on recover/rollback (issue4172)
Matt Mackall <mpm@selenic.com>
parents:
20087
diff
changeset
|
437 report(_("couldn't read journal entry %r!\n") % l) |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
438 |
20882
5dffd06f1e50
transaction: add support for non-append files
Durham Goode <durham@fb.com>
parents:
20881
diff
changeset
|
439 backupjournal = "%s.backupfiles" % file |
5dffd06f1e50
transaction: add support for non-append files
Durham Goode <durham@fb.com>
parents:
20881
diff
changeset
|
440 if opener.exists(backupjournal): |
5dffd06f1e50
transaction: add support for non-append files
Durham Goode <durham@fb.com>
parents:
20881
diff
changeset
|
441 fp = opener.open(backupjournal) |
23065
963f311e3a81
transactions: change backupfiles format to use newlines
Durham Goode <durham@fb.com>
parents:
23064
diff
changeset
|
442 lines = fp.readlines() |
963f311e3a81
transactions: change backupfiles format to use newlines
Durham Goode <durham@fb.com>
parents:
23064
diff
changeset
|
443 if lines: |
963f311e3a81
transactions: change backupfiles format to use newlines
Durham Goode <durham@fb.com>
parents:
23064
diff
changeset
|
444 ver = lines[0][:-1] |
23064
5dc888b79e70
transactions: add version number to journal.backupfiles
Durham Goode <durham@fb.com>
parents:
23063
diff
changeset
|
445 if ver == str(version): |
23065
963f311e3a81
transactions: change backupfiles format to use newlines
Durham Goode <durham@fb.com>
parents:
23064
diff
changeset
|
446 for line in lines[1:]: |
963f311e3a81
transactions: change backupfiles format to use newlines
Durham Goode <durham@fb.com>
parents:
23064
diff
changeset
|
447 if line: |
963f311e3a81
transactions: change backupfiles format to use newlines
Durham Goode <durham@fb.com>
parents:
23064
diff
changeset
|
448 # Shave off the trailing newline |
963f311e3a81
transactions: change backupfiles format to use newlines
Durham Goode <durham@fb.com>
parents:
23064
diff
changeset
|
449 line = line[:-1] |
963f311e3a81
transactions: change backupfiles format to use newlines
Durham Goode <durham@fb.com>
parents:
23064
diff
changeset
|
450 f, b = line.split('\0') |
23247
def27d46a9a8
transaction: drop the third item in `tr.backupentries`
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23220
diff
changeset
|
451 backupentries.append((f, b)) |
23064
5dc888b79e70
transactions: add version number to journal.backupfiles
Durham Goode <durham@fb.com>
parents:
23063
diff
changeset
|
452 else: |
5dc888b79e70
transactions: add version number to journal.backupfiles
Durham Goode <durham@fb.com>
parents:
23063
diff
changeset
|
453 report(_("journal was created by a newer version of " |
5dc888b79e70
transactions: add version number to journal.backupfiles
Durham Goode <durham@fb.com>
parents:
23063
diff
changeset
|
454 "Mercurial")) |
20882
5dffd06f1e50
transaction: add support for non-append files
Durham Goode <durham@fb.com>
parents:
20881
diff
changeset
|
455 |
5dffd06f1e50
transaction: add support for non-append files
Durham Goode <durham@fb.com>
parents:
20881
diff
changeset
|
456 _playback(file, report, opener, entries, backupentries) |