1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
|
# Copyright (C) 2004, 2005 by Martin Pool
# Copyright (C) 2005 by Canonical Ltd
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
import tempfile, os, errno
import bzrlib.errors
import bzrlib.progress
from bzrlib.xml4 import serializer_v4
def upgrade(branch):
"""
Upgrade branch to current format.
This causes objects to be rewritten into the current format.
If they change, their SHA-1 will of course change, which might
break any later signatures, or backreferences that check the
SHA-1.
TODO: Check non-mainline revisions.
"""
import sys
from bzrlib.trace import mutter
from bzrlib.errors import BzrCheckError
import bzrlib.ui
branch.lock_write()
pb = bzrlib.ui.ui_factory.progress_bar()
try:
last_rev_id = None
history = branch.revision_history()
revno = 0
revcount = len(history)
updated_revisions = []
# Set to True in the case that the previous revision entry
# was updated, since this will affect future revision entries
updated_previous_revision = False
for rev_id in history:
revno += 1
pb.update('upgrading revision', revno, revcount)
rev = branch.get_revision(rev_id)
if rev.revision_id != rev_id:
raise BzrCheckError('wrong internal revision id in revision {%s}'
% rev_id)
last_rev_id = rev_id
# if set to true, revision must be written out
updated = False
if rev.inventory_sha1 is None:
rev.inventory_sha1 = branch.get_inventory_sha1(rev_id)
updated = True
mutter(" set inventory_sha1 on {%s}" % rev_id)
if updated:
updated_previous_revision = True
# We had to update this revision entries hashes
# Now we need to write out a new value
# This is a little bit invasive, since we are *rewriting* a
# revision entry. I'm not supremely happy about it, but
# there should be *some* way of making old entries have
# the full meta information.
rev_tmp = tempfile.TemporaryFile()
serializer_v4.write_revision(rev, rev_tmp)
rev_tmp.seek(0)
tmpfd, tmp_path = tempfile.mkstemp(prefix=rev_id, suffix='.gz',
dir=branch.controlfilename('revision-store'))
os.close(tmpfd)
def special_rename(p1, p2):
if sys.platform == 'win32':
try:
os.remove(p2)
except OSError, e:
if e.errno != errno.ENOENT:
raise
os.rename(p1, p2)
try:
# TODO: We may need to handle the case where the old revision
# entry was not compressed (and thus did not end with .gz)
# Remove the old revision entry out of the way
rev_path = branch.controlfilename(['revision-store', rev_id+'.gz'])
special_rename(rev_path, tmp_path)
branch.revision_store.add(rev_tmp, rev_id) # Add the new one
os.remove(tmp_path) # Remove the old name
mutter(' Updated revision entry {%s}' % rev_id)
except:
# On any exception, restore the old entry
special_rename(tmp_path, rev_path)
raise
rev_tmp.close()
updated_revisions.append(rev_id)
else:
updated_previous_revision = False
finally:
branch.unlock()
pb.clear()
if updated_revisions:
print '%d revisions updated to current format' % len(updated_revisions)
|