Mercurial > traipse

comparison upmana/mercurial/transaction.py @ 28:ff154cf3350c ornery-orc

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Traipse 'OpenRPG' {100203-00} Traipse is a distribution of OpenRPG that is designed to be easy to setup and go. Traipse also makes it easy for developers to work on code without fear of sacrifice. 'Ornery-Orc' continues the trend of 'Grumpy' and adds fixes to the code. 'Ornery-Orc's main goal is to offer more advanced features and enhance the productivity of the user. Update Summary (Stable) New Features: New Bookmarks Feature New 'boot' command to remote admin New confirmation window for sent nodes Miniatures Layer pop up box allows users to turn off Mini labels, from FlexiRPG New Zoom Mouse plugin added New Images added to Plugin UI Switching to Element Tree New Map efficiency, from FlexiRPG New Status Bar to Update Manager New TrueDebug Class in orpg_log (See documentation for usage) New Portable Mercurial New Tip of the Day, from Core and community New Reference Syntax added for custom PC sheets New Child Reference for gametree New Parent Reference for gametree New Gametree Recursion method, mapping, context sensitivity, and effeciency.. New Features node with bonus nodes and Node Referencing help added New Dieroller structure from Core New DieRoller portability for odd Dice New 7th Sea die roller; ie [7k3] = [7d10.takeHighest(3).open(10)] New 'Mythos' System die roller added New vs. die roller method for WoD; ie [3v3] = [3d10.vs(3)]. Included for Mythos roller also New Warhammer FRPG Die Roller (Special thanks to Puu-san for the support) New EZ_Tree Reference system. Push a button, Traipse the tree, get a reference (Beta!) New Grids act more like Spreadsheets in Use mode, with Auto Calc Fixes: Fix to allow for portability to an OpenSUSE linux OS Fix to mplay_client for Fedora and OpenSUSE Fix to Text based Server Fix to Remote Admin Commands Fix to Pretty Print, from Core Fix to Splitter Nodes not being created Fix to massive amounts of images loading, from Core Fix to Map from gametree not showing to all clients Fix to gametree about menus Fix to Password Manager check on startup Fix to PC Sheets from tool nodes. They now use the tabber_panel Fix to Whiteboard ID to prevent random line or text deleting. Fixes to Server, Remote Server, and Server GUI Fix to Update Manager; cleaner clode for saved repositories Fixes made to Settings Panel and now reactive settings when Ok is pressed Fixes to Alternity roller's attack roll. Uses a simple Tuple instead of a Splice Fix to Use panel of Forms and Tabbers. Now longer enters design mode Fix made Image Fetching. New fetching image and new failed image Fix to whiteboard ID's to prevent non updated clients from ruining the fix. default_manifest.xml renamed to default_upmana.xml
author sirebral
date Wed, 03 Feb 2010 22:16:49 -0600
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27:51428d30c59e 28:ff154cf3350c
1 # transaction.py - simple journalling scheme for mercurial
2 #
3 # This transaction scheme is intended to gracefully handle program
4 # errors and interruptions. More serious failures like system crashes
5 # can be recovered with an fsck-like tool. As the whole repository is
6 # effectively log-structured, this should amount to simply truncating
7 # anything that isn't referenced in the changelog.
8 #
9 # Copyright 2005, 2006 Matt Mackall <mpm@selenic.com>
10 #
11 # This software may be used and distributed according to the terms of the
12 # GNU General Public License version 2, incorporated herein by reference.
13
14 from i18n import _
15 import os, errno
16 import error
17
18 def active(func):
19 def _active(self, *args, **kwds):
20 if self.count == 0:
21 raise error.Abort(_(
22 'cannot use transaction when it is already committed/aborted'))
23 return func(self, *args, **kwds)
24 return _active
25
26 def _playback(journal, report, opener, entries, unlink=True):
27 for f, o, ignore in entries:
28 if o or not unlink:
29 try:
30 opener(f, 'a').truncate(o)
31 except:
32 report(_("failed to truncate %s\n") % f)
33 raise
34 else:
35 try:
36 fn = opener(f).name
37 os.unlink(fn)
38 except IOError, inst:
39 if inst.errno != errno.ENOENT:
40 raise
41 os.unlink(journal)
42
43 class transaction(object):
44 def __init__(self, report, opener, journal, after=None, createmode=None):
45 self.journal = None
46
47 self.count = 1
48 self.report = report
49 self.opener = opener
50 self.after = after
51 self.entries = []
52 self.map = {}
53 self.journal = journal
54 self._queue = []
55
56 self.file = open(self.journal, "w")
57 if createmode is not None:
58 os.chmod(self.journal, createmode & 0666)
59
60 def __del__(self):
61 if self.journal:
62 if self.entries: self._abort()
63 self.file.close()
64
65 @active
66 def startgroup(self):
67 self._queue.append([])
68
69 @active
70 def endgroup(self):
71 q = self._queue.pop()
72 d = ''.join(['%s\0%d\n' % (x[0], x[1]) for x in q])
73 self.entries.extend(q)
74 self.file.write(d)
75 self.file.flush()
76
77 @active
78 def add(self, file, offset, data=None):
79 if file in self.map: return
80
81 if self._queue:
82 self._queue[-1].append((file, offset, data))
83 return
84
85 self.entries.append((file, offset, data))
86 self.map[file] = len(self.entries) - 1
87 # add enough data to the journal to do the truncate
88 self.file.write("%s\0%d\n" % (file, offset))
89 self.file.flush()
90
91 @active
92 def find(self, file):
93 if file in self.map:
94 return self.entries[self.map[file]]
95 return None
96
97 @active
98 def replace(self, file, offset, data=None):
99 '''
100 replace can only replace already committed entries
101 that are not pending in the queue
102 '''
103
104 if file not in self.map:
105 raise KeyError(file)
106 index = self.map[file]
107 self.entries[index] = (file, offset, data)
108 self.file.write("%s\0%d\n" % (file, offset))
109 self.file.flush()
110
111 @active
112 def nest(self):
113 self.count += 1
114 return self
115
116 def running(self):
117 return self.count > 0
118
119 @active
120 def close(self):
121 self.count -= 1
122 if self.count != 0:
123 return
124 self.file.close()
125 self.entries = []
126 if self.after:
127 self.after()
128 else:
129 os.unlink(self.journal)
130 self.journal = None
131
132 @active
133 def abort(self):
134 self._abort()
135
136 def _abort(self):
137 self.count = 0
138 self.file.close()
139
140 if not self.entries: return
141
142 self.report(_("transaction abort!\n"))
143
144 try:
145 try:
146 _playback(self.journal, self.report, self.opener, self.entries, False)
147 self.report(_("rollback completed\n"))
148 except:
149 self.report(_("rollback failed - please run hg recover\n"))
150 finally:
151 self.journal = None
152
153
154 def rollback(opener, file, report):
155 entries = []
156
157 for l in open(file).readlines():
158 f, o = l.split('\0')
159 entries.append((f, int(o), None))
160
161 _playback(file, report, opener, entries)