Mercurial > hg
annotate hgext/largefiles/basestore.py @ 29151:7996c3acc33b
wireproto: optimize handling of large batch responses
Now that batch can be used by remotefilelog, the quadratic string
copying this was doing was actually disastrous. In my local testing,
fetching a 56 meg file used to take 3 minutes, and now takes only a
few seconds.
author | Augie Fackler <augie@google.com> |
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date | Thu, 12 May 2016 09:39:14 -0400 |
parents | 207c0db08953 |
children | 814076f4ace3 |
rev | line source |
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15168 | 1 # Copyright 2009-2010 Gregory P. Ward |
2 # Copyright 2009-2010 Intelerad Medical Systems Incorporated | |
3 # Copyright 2010-2011 Fog Creek Software | |
4 # Copyright 2010-2011 Unity Technologies | |
5 # | |
6 # This software may be used and distributed according to the terms of the | |
7 # GNU General Public License version 2 or any later version. | |
8 | |
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9 '''base class for store implementations and store-related utility code''' |
15168 | 10 |
11 import re | |
12 | |
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13 from mercurial import util, node, hg, error |
15168 | 14 from mercurial.i18n import _ |
15 | |
16 import lfutil | |
17 | |
18 class StoreError(Exception): | |
19 '''Raised when there is a problem getting files from or putting | |
20 files to a central store.''' | |
21 def __init__(self, filename, hash, url, detail): | |
22 self.filename = filename | |
23 self.hash = hash | |
24 self.url = url | |
25 self.detail = detail | |
26 | |
27 def longmessage(self): | |
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28 return (_("error getting id %s from url %s for file %s: %s\n") % |
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29 (self.hash, util.hidepassword(self.url), self.filename, |
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30 self.detail)) |
15168 | 31 |
32 def __str__(self): | |
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33 return "%s: %s" % (util.hidepassword(self.url), self.detail) |
15168 | 34 |
35 class basestore(object): | |
36 def __init__(self, ui, repo, url): | |
37 self.ui = ui | |
38 self.repo = repo | |
39 self.url = url | |
40 | |
41 def put(self, source, hash): | |
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42 '''Put source file into the store so it can be retrieved by hash.''' |
15168 | 43 raise NotImplementedError('abstract method') |
44 | |
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45 def exists(self, hashes): |
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46 '''Check to see if the store contains the given hashes. Given an |
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47 iterable of hashes it returns a mapping from hash to bool.''' |
15168 | 48 raise NotImplementedError('abstract method') |
49 | |
50 def get(self, files): | |
51 '''Get the specified largefiles from the store and write to local | |
52 files under repo.root. files is a list of (filename, hash) | |
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53 tuples. Return (success, missing), lists of files successfully |
15168 | 54 downloaded and those not found in the store. success is a list |
55 of (filename, hash) tuples; missing is a list of filenames that | |
56 we could not get. (The detailed error message will already have | |
57 been presented to the user, so missing is just supplied as a | |
58 summary.)''' | |
59 success = [] | |
60 missing = [] | |
61 ui = self.ui | |
62 | |
63 at = 0 | |
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64 available = self.exists(set(hash for (_filename, hash) in files)) |
15168 | 65 for filename, hash in files: |
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66 ui.progress(_('getting largefiles'), at, unit=_('files'), |
15168 | 67 total=len(files)) |
68 at += 1 | |
69 ui.note(_('getting %s:%s\n') % (filename, hash)) | |
70 | |
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71 if not available.get(hash): |
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72 ui.warn(_('%s: largefile %s not available from %s\n') |
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73 % (filename, hash, util.hidepassword(self.url))) |
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74 missing.append(filename) |
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75 continue |
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76 |
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77 if self._gethash(filename, hash): |
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78 success.append((filename, hash)) |
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79 else: |
15168 | 80 missing.append(filename) |
81 | |
82 ui.progress(_('getting largefiles'), None) | |
83 return (success, missing) | |
84 | |
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85 def _gethash(self, filename, hash): |
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86 """Get file with the provided hash and store it in the local repo's |
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87 store and in the usercache. |
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88 filename is for informational messages only. |
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89 """ |
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90 util.makedirs(lfutil.storepath(self.repo, '')) |
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91 storefilename = lfutil.storepath(self.repo, hash) |
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92 |
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93 tmpname = storefilename + '.tmp' |
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94 tmpfile = util.atomictempfile(tmpname, |
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95 createmode=self.repo.store.createmode) |
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96 |
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97 try: |
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98 gothash = self._getfile(tmpfile, filename, hash) |
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99 except StoreError as err: |
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100 self.ui.warn(err.longmessage()) |
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101 gothash = "" |
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102 tmpfile.close() |
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103 |
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104 if gothash != hash: |
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105 if gothash != "": |
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106 self.ui.warn(_('%s: data corruption (expected %s, got %s)\n') |
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107 % (filename, hash, gothash)) |
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108 util.unlink(tmpname) |
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109 return False |
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110 |
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111 util.rename(tmpname, storefilename) |
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112 lfutil.linktousercache(self.repo, hash) |
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113 return True |
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114 |
15168 | 115 def verify(self, revs, contents=False): |
116 '''Verify the existence (and, optionally, contents) of every big | |
117 file revision referenced by every changeset in revs. | |
118 Return 0 if all is well, non-zero on any errors.''' | |
119 | |
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120 self.ui.status(_('searching %d changesets for largefiles\n') % |
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121 len(revs)) |
15168 | 122 verified = set() # set of (filename, filenode) tuples |
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123 filestocheck = [] # list of (cset, filename, expectedhash) |
15168 | 124 for rev in revs: |
125 cctx = self.repo[rev] | |
126 cset = "%d:%s" % (cctx.rev(), node.short(cctx.node())) | |
127 | |
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128 for standin in cctx: |
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129 filename = lfutil.splitstandin(standin) |
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130 if filename: |
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131 fctx = cctx[standin] |
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132 key = (filename, fctx.filenode()) |
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133 if key not in verified: |
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134 verified.add(key) |
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135 expectedhash = fctx.data()[0:40] |
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136 filestocheck.append((cset, filename, expectedhash)) |
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137 |
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138 failed = self._verifyfiles(contents, filestocheck) |
15168 | 139 |
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140 numrevs = len(verified) |
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141 numlfiles = len(set([fname for (fname, fnode) in verified])) |
15168 | 142 if contents: |
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143 self.ui.status( |
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144 _('verified contents of %d revisions of %d largefiles\n') |
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145 % (numrevs, numlfiles)) |
15168 | 146 else: |
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147 self.ui.status( |
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148 _('verified existence of %d revisions of %d largefiles\n') |
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149 % (numrevs, numlfiles)) |
15168 | 150 return int(failed) |
151 | |
152 def _getfile(self, tmpfile, filename, hash): | |
153 '''Fetch one revision of one file from the store and write it | |
154 to tmpfile. Compute the hash of the file on-the-fly as it | |
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155 downloads and return the hash. Close tmpfile. Raise |
15168 | 156 StoreError if unable to download the file (e.g. it does not |
157 exist in the store).''' | |
158 raise NotImplementedError('abstract method') | |
159 | |
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160 def _verifyfiles(self, contents, filestocheck): |
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161 '''Perform the actual verification of files in the store. |
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162 'contents' controls verification of content hash. |
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163 'filestocheck' is list of files to check. |
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164 Returns _true_ if any problems are found! |
15168 | 165 ''' |
166 raise NotImplementedError('abstract method') | |
167 | |
168 import localstore, wirestore | |
169 | |
170 _storeprovider = { | |
171 'file': [localstore.localstore], | |
172 'http': [wirestore.wirestore], | |
173 'https': [wirestore.wirestore], | |
174 'ssh': [wirestore.wirestore], | |
175 } | |
176 | |
177 _scheme_re = re.compile(r'^([a-zA-Z0-9+-.]+)://') | |
178 | |
179 # During clone this function is passed the src's ui object | |
180 # but it needs the dest's ui object so it can read out of | |
181 # the config file. Use repo.ui instead. | |
182 def _openstore(repo, remote=None, put=False): | |
183 ui = repo.ui | |
184 | |
185 if not remote: | |
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186 lfpullsource = getattr(repo, 'lfpullsource', None) |
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187 if lfpullsource: |
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188 path = ui.expandpath(lfpullsource) |
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189 elif put: |
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190 path = ui.expandpath('default-push', 'default') |
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191 else: |
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192 path = ui.expandpath('default') |
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193 |
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largefiles: improve comments, internal docstrings
Greg Ward <greg@gerg.ca>
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194 # ui.expandpath() leaves 'default-push' and 'default' alone if |
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195 # they cannot be expanded: fallback to the empty string, |
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196 # meaning the current directory. |
15168 | 197 if path == 'default-push' or path == 'default': |
198 path = '' | |
199 remote = repo | |
200 else: | |
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largefiles: allow use of urls with #revision
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201 path, _branches = hg.parseurl(path) |
15168 | 202 remote = hg.peer(repo, {}, path) |
203 | |
204 # The path could be a scheme so use Mercurial's normal functionality | |
205 # to resolve the scheme to a repository and use its path | |
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largefile: fix up hasattr usage
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206 path = util.safehasattr(remote, 'url') and remote.url() or remote.path |
15168 | 207 |
208 match = _scheme_re.match(path) | |
209 if not match: # regular filesystem path | |
210 scheme = 'file' | |
211 else: | |
212 scheme = match.group(1) | |
213 | |
214 try: | |
215 storeproviders = _storeprovider[scheme] | |
216 except KeyError: | |
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217 raise error.Abort(_('unsupported URL scheme %r') % scheme) |
15168 | 218 |
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219 for classobj in storeproviders: |
15168 | 220 try: |
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221 return classobj(ui, repo, remote) |
15168 | 222 except lfutil.storeprotonotcapable: |
223 pass | |
224 | |
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225 raise error.Abort(_('%s does not appear to be a largefile store') % |
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largefiles: hide passwords in URLs in ui messages
Mads Kiilerich <madski@unity3d.com>
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226 util.hidepassword(path)) |