Mercurial > hg
annotate hgext/largefiles/remotestore.py @ 43077:687b865b95ad
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Differential Revision: https://phab.mercurial-scm.org/D6972
author | Augie Fackler <augie@google.com> |
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date | Sun, 06 Oct 2019 09:48:39 -0400 |
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15168 | 1 # Copyright 2010-2011 Fog Creek Software |
2 # Copyright 2010-2011 Unity Technologies | |
3 # | |
4 # This software may be used and distributed according to the terms of the | |
5 # GNU General Public License version 2 or any later version. | |
6 | |
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7 '''remote largefile store; the base class for wirestore''' |
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8 from __future__ import absolute_import |
15168 | 9 |
10 from mercurial.i18n import _ | |
11 | |
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12 from mercurial import ( |
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13 error, |
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14 util, |
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15 ) |
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16 |
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17 from mercurial.utils import stringutil |
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18 |
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19 from . import ( |
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20 basestore, |
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21 lfutil, |
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22 localstore, |
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23 ) |
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24 |
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25 urlerr = util.urlerr |
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26 urlreq = util.urlreq |
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27 |
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28 |
15168 | 29 class remotestore(basestore.basestore): |
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30 '''a largefile store accessed over a network''' |
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31 |
15168 | 32 def __init__(self, ui, repo, url): |
33 super(remotestore, self).__init__(ui, repo, url) | |
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34 self._lstore = None |
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35 if repo is not None: |
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36 self._lstore = localstore.localstore(self.ui, self.repo, self.repo) |
15168 | 37 |
38 def put(self, source, hash): | |
39 if self.sendfile(source, hash): | |
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40 raise error.Abort( |
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41 _(b'remotestore: could not put %s to remote store %s') |
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42 % (source, util.hidepassword(self.url)) |
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43 ) |
15168 | 44 self.ui.debug( |
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45 _(b'remotestore: put %s to remote store %s\n') |
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46 % (source, util.hidepassword(self.url)) |
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47 ) |
15168 | 48 |
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49 def exists(self, hashes): |
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50 return dict( |
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51 (h, s == 0) |
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52 for (h, s) in self._stat(hashes).iteritems() # dict-from-generator |
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53 ) |
15168 | 54 |
55 def sendfile(self, filename, hash): | |
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56 self.ui.debug(b'remotestore: sendfile(%s, %s)\n' % (filename, hash)) |
15168 | 57 try: |
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58 with lfutil.httpsendfile(self.ui, filename) as fd: |
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59 return self._put(hash, fd) |
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60 except IOError as e: |
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61 raise error.Abort( |
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62 _(b'remotestore: could not open file %s: %s') |
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63 % (filename, stringutil.forcebytestr(e)) |
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64 ) |
15168 | 65 |
66 def _getfile(self, tmpfile, filename, hash): | |
67 try: | |
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68 chunks = self._get(hash) |
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69 except urlerr.httperror as e: |
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70 # 401s get converted to error.Aborts; everything else is fine being |
15168 | 71 # turned into a StoreError |
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72 raise basestore.StoreError( |
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73 filename, hash, self.url, stringutil.forcebytestr(e) |
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74 ) |
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75 except urlerr.urlerror as e: |
15168 | 76 # This usually indicates a connection problem, so don't |
77 # keep trying with the other files... they will probably | |
78 # all fail too. | |
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79 raise error.Abort( |
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80 b'%s: %s' % (util.hidepassword(self.url), e.reason) |
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81 ) |
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82 except IOError as e: |
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83 raise basestore.StoreError( |
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84 filename, hash, self.url, stringutil.forcebytestr(e) |
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85 ) |
15168 | 86 |
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87 return lfutil.copyandhash(chunks, tmpfile) |
15168 | 88 |
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89 def _hashesavailablelocally(self, hashes): |
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90 existslocallymap = self._lstore.exists(hashes) |
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91 localhashes = [hash for hash in hashes if existslocallymap[hash]] |
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92 return localhashes |
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93 |
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94 def _verifyfiles(self, contents, filestocheck): |
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95 failed = False |
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96 expectedhashes = [ |
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97 expectedhash for cset, filename, expectedhash in filestocheck |
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98 ] |
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99 localhashes = self._hashesavailablelocally(expectedhashes) |
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100 stats = self._stat( |
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101 [ |
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102 expectedhash |
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103 for expectedhash in expectedhashes |
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104 if expectedhash not in localhashes |
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105 ] |
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106 ) |
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107 |
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108 for cset, filename, expectedhash in filestocheck: |
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109 if expectedhash in localhashes: |
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110 filetocheck = (cset, filename, expectedhash) |
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111 verifyresult = self._lstore._verifyfiles( |
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112 contents, [filetocheck] |
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113 ) |
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114 if verifyresult: |
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115 failed = True |
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116 else: |
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117 stat = stats[expectedhash] |
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118 if stat: |
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119 if stat == 1: |
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120 self.ui.warn( |
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121 _(b'changeset %s: %s: contents differ\n') |
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122 % (cset, filename) |
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123 ) |
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124 failed = True |
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125 elif stat == 2: |
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126 self.ui.warn( |
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127 _(b'changeset %s: %s missing\n') % (cset, filename) |
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128 ) |
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129 failed = True |
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130 else: |
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131 raise RuntimeError( |
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132 b'verify failed: unexpected response ' |
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133 b'from statlfile (%r)' % stat |
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134 ) |
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135 return failed |
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136 |
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137 def _put(self, hash, fd): |
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138 '''Put file with the given hash in the remote store.''' |
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139 raise NotImplementedError(b'abstract method') |
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140 |
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141 def _get(self, hash): |
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142 '''Get a iterator for content with the given hash.''' |
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143 raise NotImplementedError(b'abstract method') |
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144 |
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145 def _stat(self, hashes): |
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146 '''Get information about availability of files specified by |
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147 hashes in the remote store. Return dictionary mapping hashes |
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148 to return code where 0 means that file is available, other |
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149 values if not.''' |
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150 raise NotImplementedError(b'abstract method') |