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@@ -1,580 +1,581 b'' | |||
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1 | 1 | # blobstore.py - local and remote (speaking Git-LFS protocol) blob storages |
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2 | 2 | # |
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3 | 3 | # Copyright 2017 Facebook, Inc. |
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4 | 4 | # |
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5 | 5 | # This software may be used and distributed according to the terms of the |
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6 | 6 | # GNU General Public License version 2 or any later version. |
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7 | 7 | |
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8 | 8 | from __future__ import absolute_import |
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9 | 9 | |
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10 | 10 | import errno |
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11 | 11 | import hashlib |
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12 | 12 | import json |
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13 | 13 | import os |
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14 | 14 | import re |
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15 | 15 | import socket |
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16 | 16 | |
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17 | 17 | from mercurial.i18n import _ |
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18 | 18 | |
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19 | 19 | from mercurial import ( |
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20 | 20 | error, |
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21 | 21 | pathutil, |
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22 | 22 | pycompat, |
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23 | 23 | url as urlmod, |
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24 | 24 | util, |
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25 | 25 | vfs as vfsmod, |
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26 | 26 | worker, |
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27 | 27 | ) |
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28 | 28 | |
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29 | 29 | from ..largefiles import lfutil |
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30 | 30 | |
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31 | 31 | # 64 bytes for SHA256 |
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32 | 32 | _lfsre = re.compile(br'\A[a-f0-9]{64}\Z') |
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33 | 33 | |
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34 | 34 | class lfsvfs(vfsmod.vfs): |
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35 | 35 | def join(self, path): |
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36 | 36 | """split the path at first two characters, like: XX/XXXXX...""" |
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37 | 37 | if not _lfsre.match(path): |
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38 | 38 | raise error.ProgrammingError('unexpected lfs path: %s' % path) |
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39 | 39 | return super(lfsvfs, self).join(path[0:2], path[2:]) |
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40 | 40 | |
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41 | 41 | def walk(self, path=None, onerror=None): |
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42 | 42 | """Yield (dirpath, [], oids) tuple for blobs under path |
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43 | 43 | |
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44 | 44 | Oids only exist in the root of this vfs, so dirpath is always ''. |
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45 | 45 | """ |
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46 | 46 | root = os.path.normpath(self.base) |
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47 | 47 | # when dirpath == root, dirpath[prefixlen:] becomes empty |
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48 | 48 | # because len(dirpath) < prefixlen. |
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49 | 49 | prefixlen = len(pathutil.normasprefix(root)) |
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50 | 50 | oids = [] |
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51 | 51 | |
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52 | 52 | for dirpath, dirs, files in os.walk(self.reljoin(self.base, path or ''), |
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53 | 53 | onerror=onerror): |
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54 | 54 | dirpath = dirpath[prefixlen:] |
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55 | 55 | |
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56 | 56 | # Silently skip unexpected files and directories |
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57 | 57 | if len(dirpath) == 2: |
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58 | 58 | oids.extend([dirpath + f for f in files |
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59 | 59 | if _lfsre.match(dirpath + f)]) |
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60 | 60 | |
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61 | 61 | yield ('', [], oids) |
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62 | 62 | |
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63 | 63 | class nullvfs(lfsvfs): |
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64 | 64 | def __init__(self): |
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65 | 65 | pass |
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66 | 66 | |
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67 | 67 | def exists(self, oid): |
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68 | 68 | return False |
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69 | 69 | |
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70 | 70 | def read(self, oid): |
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71 | 71 | # store.read() calls into here if the blob doesn't exist in its |
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72 | 72 | # self.vfs. Raise the same error as a normal vfs when asked to read a |
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73 | 73 | # file that doesn't exist. The only difference is the full file path |
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74 | 74 | # isn't available in the error. |
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75 | 75 | raise IOError(errno.ENOENT, '%s: No such file or directory' % oid) |
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76 | 76 | |
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77 | 77 | def walk(self, path=None, onerror=None): |
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78 | 78 | return ('', [], []) |
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79 | 79 | |
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80 | 80 | def write(self, oid, data): |
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81 | 81 | pass |
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82 | 82 | |
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83 | 83 | class filewithprogress(object): |
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84 | 84 | """a file-like object that supports __len__ and read. |
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85 | 85 | |
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86 | 86 | Useful to provide progress information for how many bytes are read. |
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87 | 87 | """ |
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88 | 88 | |
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89 | 89 | def __init__(self, fp, callback): |
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90 | 90 | self._fp = fp |
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91 | 91 | self._callback = callback # func(readsize) |
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92 | 92 | fp.seek(0, os.SEEK_END) |
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93 | 93 | self._len = fp.tell() |
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94 | 94 | fp.seek(0) |
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95 | 95 | |
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96 | 96 | def __len__(self): |
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97 | 97 | return self._len |
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98 | 98 | |
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99 | 99 | def read(self, size): |
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100 | 100 | if self._fp is None: |
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101 | 101 | return b'' |
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102 | 102 | data = self._fp.read(size) |
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103 | 103 | if data: |
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104 | 104 | if self._callback: |
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105 | 105 | self._callback(len(data)) |
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106 | 106 | else: |
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107 | 107 | self._fp.close() |
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108 | 108 | self._fp = None |
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109 | 109 | return data |
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110 | 110 | |
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111 | 111 | class local(object): |
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112 | 112 | """Local blobstore for large file contents. |
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113 | 113 | |
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114 | 114 | This blobstore is used both as a cache and as a staging area for large blobs |
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115 | 115 | to be uploaded to the remote blobstore. |
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116 | 116 | """ |
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117 | 117 | |
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118 | 118 | def __init__(self, repo): |
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119 | 119 | fullpath = repo.svfs.join('lfs/objects') |
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120 | 120 | self.vfs = lfsvfs(fullpath) |
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121 | 121 | |
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122 | 122 | if repo.ui.configbool('experimental', 'lfs.disableusercache'): |
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123 | 123 | self.cachevfs = nullvfs() |
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124 | 124 | else: |
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125 | 125 | usercache = lfutil._usercachedir(repo.ui, 'lfs') |
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126 | 126 | self.cachevfs = lfsvfs(usercache) |
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127 | 127 | self.ui = repo.ui |
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128 | 128 | |
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129 | 129 | def open(self, oid): |
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130 | 130 | """Open a read-only file descriptor to the named blob, in either the |
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131 | 131 | usercache or the local store.""" |
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132 | 132 | # The usercache is the most likely place to hold the file. Commit will |
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133 | 133 | # write to both it and the local store, as will anything that downloads |
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134 | 134 | # the blobs. However, things like clone without an update won't |
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135 | 135 | # populate the local store. For an init + push of a local clone, |
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136 | 136 | # the usercache is the only place it _could_ be. If not present, the |
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137 | 137 | # missing file msg here will indicate the local repo, not the usercache. |
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138 | 138 | if self.cachevfs.exists(oid): |
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139 | 139 | return self.cachevfs(oid, 'rb') |
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140 | 140 | |
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141 | 141 | return self.vfs(oid, 'rb') |
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142 | 142 | |
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143 | 143 | def download(self, oid, src): |
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144 | 144 | """Read the blob from the remote source in chunks, verify the content, |
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145 | 145 | and write to this local blobstore.""" |
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146 | 146 | sha256 = hashlib.sha256() |
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147 | 147 | |
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148 | 148 | with self.vfs(oid, 'wb', atomictemp=True) as fp: |
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149 | 149 | for chunk in util.filechunkiter(src, size=1048576): |
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150 | 150 | fp.write(chunk) |
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151 | 151 | sha256.update(chunk) |
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152 | 152 | |
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153 | 153 | realoid = sha256.hexdigest() |
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154 | 154 | if realoid != oid: |
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155 | 155 | raise LfsCorruptionError(_('corrupt remote lfs object: %s') |
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156 | 156 | % oid) |
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157 | 157 | |
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158 | 158 | self._linktousercache(oid) |
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159 | 159 | |
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160 | 160 | def write(self, oid, data): |
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161 | 161 | """Write blob to local blobstore. |
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162 | 162 | |
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163 | 163 | This should only be called from the filelog during a commit or similar. |
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164 | 164 | As such, there is no need to verify the data. Imports from a remote |
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165 | 165 | store must use ``download()`` instead.""" |
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166 | 166 | with self.vfs(oid, 'wb', atomictemp=True) as fp: |
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167 | 167 | fp.write(data) |
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168 | 168 | |
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169 | 169 | self._linktousercache(oid) |
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170 | 170 | |
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171 | 171 | def _linktousercache(self, oid): |
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172 | 172 | # XXX: should we verify the content of the cache, and hardlink back to |
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173 | 173 | # the local store on success, but truncate, write and link on failure? |
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174 | 174 | if (not self.cachevfs.exists(oid) |
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175 | 175 | and not isinstance(self.cachevfs, nullvfs)): |
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176 | 176 | self.ui.note(_('lfs: adding %s to the usercache\n') % oid) |
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177 | 177 | lfutil.link(self.vfs.join(oid), self.cachevfs.join(oid)) |
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178 | 178 | |
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179 | 179 | def read(self, oid, verify=True): |
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180 | 180 | """Read blob from local blobstore.""" |
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181 | 181 | if not self.vfs.exists(oid): |
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182 | 182 | blob = self._read(self.cachevfs, oid, verify) |
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183 | 183 | |
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184 | 184 | # Even if revlog will verify the content, it needs to be verified |
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185 | 185 | # now before making the hardlink to avoid propagating corrupt blobs. |
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186 | 186 | # Don't abort if corruption is detected, because `hg verify` will |
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187 | 187 | # give more useful info about the corruption- simply don't add the |
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188 | 188 | # hardlink. |
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189 | 189 | if verify or hashlib.sha256(blob).hexdigest() == oid: |
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190 | 190 | self.ui.note(_('lfs: found %s in the usercache\n') % oid) |
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191 | 191 | lfutil.link(self.cachevfs.join(oid), self.vfs.join(oid)) |
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192 | 192 | else: |
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193 | 193 | self.ui.note(_('lfs: found %s in the local lfs store\n') % oid) |
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194 | 194 | blob = self._read(self.vfs, oid, verify) |
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195 | 195 | return blob |
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196 | 196 | |
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197 | 197 | def _read(self, vfs, oid, verify): |
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198 | 198 | """Read blob (after verifying) from the given store""" |
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199 | 199 | blob = vfs.read(oid) |
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200 | 200 | if verify: |
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201 | 201 | _verify(oid, blob) |
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202 | 202 | return blob |
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203 | 203 | |
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204 | 204 | def verify(self, oid): |
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205 | 205 | """Indicate whether or not the hash of the underlying file matches its |
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206 | 206 | name.""" |
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207 | 207 | sha256 = hashlib.sha256() |
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208 | 208 | |
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209 | 209 | with self.open(oid) as fp: |
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210 | 210 | for chunk in util.filechunkiter(fp, size=1048576): |
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211 | 211 | sha256.update(chunk) |
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212 | 212 | |
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213 | 213 | return oid == sha256.hexdigest() |
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214 | 214 | |
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215 | 215 | def has(self, oid): |
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216 | 216 | """Returns True if the local blobstore contains the requested blob, |
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217 | 217 | False otherwise.""" |
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218 | 218 | return self.cachevfs.exists(oid) or self.vfs.exists(oid) |
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219 | 219 | |
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220 | 220 | class _gitlfsremote(object): |
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221 | 221 | |
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222 | 222 | def __init__(self, repo, url): |
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223 | 223 | ui = repo.ui |
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224 | 224 | self.ui = ui |
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225 | 225 | baseurl, authinfo = url.authinfo() |
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226 | 226 | self.baseurl = baseurl.rstrip('/') |
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227 | 227 | useragent = repo.ui.config('experimental', 'lfs.user-agent') |
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228 | 228 | if not useragent: |
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229 | 229 | useragent = 'git-lfs/2.3.4 (Mercurial %s)' % util.version() |
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230 | 230 | self.urlopener = urlmod.opener(ui, authinfo, useragent) |
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231 | 231 | self.retry = ui.configint('lfs', 'retry') |
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232 | 232 | |
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233 | 233 | def writebatch(self, pointers, fromstore): |
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234 | 234 | """Batch upload from local to remote blobstore.""" |
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235 | 235 | self._batch(_deduplicate(pointers), fromstore, 'upload') |
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236 | 236 | |
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237 | 237 | def readbatch(self, pointers, tostore): |
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238 | 238 | """Batch download from remote to local blostore.""" |
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239 | 239 | self._batch(_deduplicate(pointers), tostore, 'download') |
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240 | 240 | |
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241 | 241 | def _batchrequest(self, pointers, action): |
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242 | 242 | """Get metadata about objects pointed by pointers for given action |
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243 | 243 | |
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244 | 244 | Return decoded JSON object like {'objects': [{'oid': '', 'size': 1}]} |
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245 | 245 | See https://github.com/git-lfs/git-lfs/blob/master/docs/api/batch.md |
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246 | 246 | """ |
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247 | 247 | objects = [{'oid': p.oid(), 'size': p.size()} for p in pointers] |
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248 | 248 | requestdata = json.dumps({ |
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249 | 249 | 'objects': objects, |
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250 | 250 | 'operation': action, |
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251 | 251 | }) |
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252 | 252 | batchreq = util.urlreq.request('%s/objects/batch' % self.baseurl, |
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253 | 253 | data=requestdata) |
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254 | 254 | batchreq.add_header('Accept', 'application/vnd.git-lfs+json') |
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255 | 255 | batchreq.add_header('Content-Type', 'application/vnd.git-lfs+json') |
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256 | 256 | try: |
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257 | 257 | rsp = self.urlopener.open(batchreq) |
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258 | 258 | rawjson = rsp.read() |
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259 | 259 | except util.urlerr.httperror as ex: |
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260 | 260 | raise LfsRemoteError(_('LFS HTTP error: %s (action=%s)') |
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261 | 261 | % (ex, action)) |
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262 | 262 | try: |
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263 | 263 | response = json.loads(rawjson) |
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264 | 264 | except ValueError: |
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265 | 265 | raise LfsRemoteError(_('LFS server returns invalid JSON: %s') |
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266 | 266 | % rawjson) |
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267 | 267 | |
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268 | 268 | if self.ui.debugflag: |
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269 | 269 | self.ui.debug('Status: %d\n' % rsp.status) |
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270 | 270 | # lfs-test-server and hg serve return headers in different order |
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271 | 271 | self.ui.debug('%s\n' |
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272 | 272 | % '\n'.join(sorted(str(rsp.info()).splitlines()))) |
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273 | 273 | |
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274 | 274 | if 'objects' in response: |
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275 | 275 | response['objects'] = sorted(response['objects'], |
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276 | 276 | key=lambda p: p['oid']) |
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277 | 277 | self.ui.debug('%s\n' |
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278 | 278 | % json.dumps(response, indent=2, |
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279 | 279 | separators=('', ': '), sort_keys=True)) |
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280 | 280 | |
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281 | 281 | return response |
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282 | 282 | |
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283 | 283 | def _checkforservererror(self, pointers, responses, action): |
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284 | 284 | """Scans errors from objects |
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285 | 285 | |
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286 | 286 | Raises LfsRemoteError if any objects have an error""" |
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287 | 287 | for response in responses: |
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288 | 288 | # The server should return 404 when objects cannot be found. Some |
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289 | 289 | # server implementation (ex. lfs-test-server) does not set "error" |
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290 | 290 | # but just removes "download" from "actions". Treat that case |
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291 | 291 | # as the same as 404 error. |
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292 | 292 | if 'error' not in response: |
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293 | 293 | if (action == 'download' |
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294 | 294 | and action not in response.get('actions', [])): |
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295 | 295 | code = 404 |
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296 | 296 | else: |
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297 | 297 | continue |
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298 | 298 | else: |
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299 | 299 | # An error dict without a code doesn't make much sense, so |
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300 | 300 | # treat as a server error. |
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301 | 301 | code = response.get('error').get('code', 500) |
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302 | 302 | |
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303 | 303 | ptrmap = {p.oid(): p for p in pointers} |
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304 | 304 | p = ptrmap.get(response['oid'], None) |
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305 | 305 | if p: |
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306 | 306 | filename = getattr(p, 'filename', 'unknown') |
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307 | 307 | errors = { |
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308 | 308 | 404: 'The object does not exist', |
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309 | 309 | 410: 'The object was removed by the owner', |
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310 | 310 | 422: 'Validation error', |
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311 | 311 | 500: 'Internal server error', |
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312 | 312 | } |
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313 | 313 | msg = errors.get(code, 'status code %d' % code) |
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314 | 314 | raise LfsRemoteError(_('LFS server error for "%s": %s') |
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315 | 315 | % (filename, msg)) |
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316 | 316 | else: |
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317 | 317 | raise LfsRemoteError( |
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318 | 318 | _('LFS server error. Unsolicited response for oid %s') |
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319 | 319 | % response['oid']) |
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320 | 320 | |
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321 | 321 | def _extractobjects(self, response, pointers, action): |
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322 | 322 | """extract objects from response of the batch API |
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323 | 323 | |
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324 | 324 | response: parsed JSON object returned by batch API |
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325 | 325 | return response['objects'] filtered by action |
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326 | 326 | raise if any object has an error |
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327 | 327 | """ |
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328 | 328 | # Scan errors from objects - fail early |
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329 | 329 | objects = response.get('objects', []) |
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330 | 330 | self._checkforservererror(pointers, objects, action) |
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331 | 331 | |
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332 | 332 | # Filter objects with given action. Practically, this skips uploading |
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333 | 333 | # objects which exist in the server. |
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334 | 334 | filteredobjects = [o for o in objects if action in o.get('actions', [])] |
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335 | 335 | |
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336 | 336 | return filteredobjects |
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337 | 337 | |
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338 | 338 | def _basictransfer(self, obj, action, localstore): |
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339 | 339 | """Download or upload a single object using basic transfer protocol |
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340 | 340 | |
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341 | 341 | obj: dict, an object description returned by batch API |
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342 | 342 | action: string, one of ['upload', 'download'] |
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343 | 343 | localstore: blobstore.local |
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344 | 344 | |
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345 | 345 | See https://github.com/git-lfs/git-lfs/blob/master/docs/api/\ |
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346 | 346 | basic-transfers.md |
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347 | 347 | """ |
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348 | 348 | oid = pycompat.bytestr(obj['oid']) |
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349 | 349 | |
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350 | 350 | href = pycompat.bytestr(obj['actions'][action].get('href')) |
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351 | 351 | headers = obj['actions'][action].get('header', {}).items() |
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352 | 352 | |
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353 | 353 | request = util.urlreq.request(href) |
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354 | 354 | if action == 'upload': |
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355 | 355 | # If uploading blobs, read data from local blobstore. |
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356 | 356 | if not localstore.verify(oid): |
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357 | 357 | raise error.Abort(_('detected corrupt lfs object: %s') % oid, |
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358 | 358 | hint=_('run hg verify')) |
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359 | 359 | request.data = filewithprogress(localstore.open(oid), None) |
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360 | 360 | request.get_method = lambda: 'PUT' |
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361 | 361 | request.add_header('Content-Type', 'application/octet-stream') |
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362 | 362 | |
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363 | 363 | for k, v in headers: |
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364 | 364 | request.add_header(k, v) |
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365 | 365 | |
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366 | 366 | response = b'' |
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367 | 367 | try: |
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368 | 368 | req = self.urlopener.open(request) |
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369 | 369 | |
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370 | 370 | if self.ui.debugflag: |
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371 | 371 | self.ui.debug('Status: %d\n' % req.status) |
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372 | 372 | # lfs-test-server and hg serve return headers in different order |
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373 | 373 | self.ui.debug('%s\n' |
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374 | 374 | % '\n'.join(sorted(str(req.info()).splitlines()))) |
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375 | 375 | |
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376 | 376 | if action == 'download': |
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377 | 377 | # If downloading blobs, store downloaded data to local blobstore |
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378 | 378 | localstore.download(oid, req) |
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379 | 379 | else: |
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380 | 380 | while True: |
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381 | 381 | data = req.read(1048576) |
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382 | 382 | if not data: |
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383 | 383 | break |
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384 | 384 | response += data |
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385 | 385 | if response: |
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386 | 386 | self.ui.debug('lfs %s response: %s' % (action, response)) |
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387 | 387 | except util.urlerr.httperror as ex: |
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388 | 388 | if self.ui.debugflag: |
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389 | 389 | self.ui.debug('%s: %s\n' % (oid, ex.read())) |
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390 | 390 | raise LfsRemoteError(_('HTTP error: %s (oid=%s, action=%s)') |
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391 | 391 | % (ex, oid, action)) |
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392 | 392 | |
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393 | 393 | def _batch(self, pointers, localstore, action): |
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394 | 394 | if action not in ['upload', 'download']: |
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395 | 395 | raise error.ProgrammingError('invalid Git-LFS action: %s' % action) |
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396 | 396 | |
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397 | 397 | response = self._batchrequest(pointers, action) |
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398 | 398 | objects = self._extractobjects(response, pointers, action) |
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399 | 399 | total = sum(x.get('size', 0) for x in objects) |
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400 | 400 | sizes = {} |
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401 | 401 | for obj in objects: |
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402 | 402 | sizes[obj.get('oid')] = obj.get('size', 0) |
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403 | 403 | topic = {'upload': _('lfs uploading'), |
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404 | 404 | 'download': _('lfs downloading')}[action] |
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405 | 405 | if len(objects) > 1: |
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406 | 406 | self.ui.note(_('lfs: need to transfer %d objects (%s)\n') |
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407 | 407 | % (len(objects), util.bytecount(total))) |
|
408 |
self.ui.progress(topic |
|
|
408 | progress = self.ui.makeprogress(topic, total=total) | |
|
409 | progress.update(0) | |
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409 | 410 | def transfer(chunk): |
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410 | 411 | for obj in chunk: |
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411 | 412 | objsize = obj.get('size', 0) |
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412 | 413 | if self.ui.verbose: |
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413 | 414 | if action == 'download': |
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414 | 415 | msg = _('lfs: downloading %s (%s)\n') |
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415 | 416 | elif action == 'upload': |
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416 | 417 | msg = _('lfs: uploading %s (%s)\n') |
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417 | 418 | self.ui.note(msg % (obj.get('oid'), |
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418 | 419 | util.bytecount(objsize))) |
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419 | 420 | retry = self.retry |
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420 | 421 | while True: |
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421 | 422 | try: |
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422 | 423 | self._basictransfer(obj, action, localstore) |
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423 | 424 | yield 1, obj.get('oid') |
|
424 | 425 | break |
|
425 | 426 | except socket.error as ex: |
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426 | 427 | if retry > 0: |
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427 | 428 | self.ui.note( |
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428 | 429 | _('lfs: failed: %r (remaining retry %d)\n') |
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429 | 430 | % (ex, retry)) |
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430 | 431 | retry -= 1 |
|
431 | 432 | continue |
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432 | 433 | raise |
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433 | 434 | |
|
434 | 435 | # Until https multiplexing gets sorted out |
|
435 | 436 | if self.ui.configbool('experimental', 'lfs.worker-enable'): |
|
436 | 437 | oids = worker.worker(self.ui, 0.1, transfer, (), |
|
437 | 438 | sorted(objects, key=lambda o: o.get('oid'))) |
|
438 | 439 | else: |
|
439 | 440 | oids = transfer(sorted(objects, key=lambda o: o.get('oid'))) |
|
440 | 441 | |
|
441 | 442 | processed = 0 |
|
442 | 443 | blobs = 0 |
|
443 | 444 | for _one, oid in oids: |
|
444 | 445 | processed += sizes[oid] |
|
445 | 446 | blobs += 1 |
|
446 |
|
|
|
447 | progress.update(processed) | |
|
447 | 448 | self.ui.note(_('lfs: processed: %s\n') % oid) |
|
448 | self.ui.progress(topic, pos=None, total=total) | |
|
449 | progress.complete() | |
|
449 | 450 | |
|
450 | 451 | if blobs > 0: |
|
451 | 452 | if action == 'upload': |
|
452 | 453 | self.ui.status(_('lfs: uploaded %d files (%s)\n') |
|
453 | 454 | % (blobs, util.bytecount(processed))) |
|
454 | 455 | elif action == 'download': |
|
455 | 456 | self.ui.status(_('lfs: downloaded %d files (%s)\n') |
|
456 | 457 | % (blobs, util.bytecount(processed))) |
|
457 | 458 | |
|
458 | 459 | def __del__(self): |
|
459 | 460 | # copied from mercurial/httppeer.py |
|
460 | 461 | urlopener = getattr(self, 'urlopener', None) |
|
461 | 462 | if urlopener: |
|
462 | 463 | for h in urlopener.handlers: |
|
463 | 464 | h.close() |
|
464 | 465 | getattr(h, "close_all", lambda : None)() |
|
465 | 466 | |
|
466 | 467 | class _dummyremote(object): |
|
467 | 468 | """Dummy store storing blobs to temp directory.""" |
|
468 | 469 | |
|
469 | 470 | def __init__(self, repo, url): |
|
470 | 471 | fullpath = repo.vfs.join('lfs', url.path) |
|
471 | 472 | self.vfs = lfsvfs(fullpath) |
|
472 | 473 | |
|
473 | 474 | def writebatch(self, pointers, fromstore): |
|
474 | 475 | for p in _deduplicate(pointers): |
|
475 | 476 | content = fromstore.read(p.oid(), verify=True) |
|
476 | 477 | with self.vfs(p.oid(), 'wb', atomictemp=True) as fp: |
|
477 | 478 | fp.write(content) |
|
478 | 479 | |
|
479 | 480 | def readbatch(self, pointers, tostore): |
|
480 | 481 | for p in _deduplicate(pointers): |
|
481 | 482 | with self.vfs(p.oid(), 'rb') as fp: |
|
482 | 483 | tostore.download(p.oid(), fp) |
|
483 | 484 | |
|
484 | 485 | class _nullremote(object): |
|
485 | 486 | """Null store storing blobs to /dev/null.""" |
|
486 | 487 | |
|
487 | 488 | def __init__(self, repo, url): |
|
488 | 489 | pass |
|
489 | 490 | |
|
490 | 491 | def writebatch(self, pointers, fromstore): |
|
491 | 492 | pass |
|
492 | 493 | |
|
493 | 494 | def readbatch(self, pointers, tostore): |
|
494 | 495 | pass |
|
495 | 496 | |
|
496 | 497 | class _promptremote(object): |
|
497 | 498 | """Prompt user to set lfs.url when accessed.""" |
|
498 | 499 | |
|
499 | 500 | def __init__(self, repo, url): |
|
500 | 501 | pass |
|
501 | 502 | |
|
502 | 503 | def writebatch(self, pointers, fromstore, ui=None): |
|
503 | 504 | self._prompt() |
|
504 | 505 | |
|
505 | 506 | def readbatch(self, pointers, tostore, ui=None): |
|
506 | 507 | self._prompt() |
|
507 | 508 | |
|
508 | 509 | def _prompt(self): |
|
509 | 510 | raise error.Abort(_('lfs.url needs to be configured')) |
|
510 | 511 | |
|
511 | 512 | _storemap = { |
|
512 | 513 | 'https': _gitlfsremote, |
|
513 | 514 | 'http': _gitlfsremote, |
|
514 | 515 | 'file': _dummyremote, |
|
515 | 516 | 'null': _nullremote, |
|
516 | 517 | None: _promptremote, |
|
517 | 518 | } |
|
518 | 519 | |
|
519 | 520 | def _deduplicate(pointers): |
|
520 | 521 | """Remove any duplicate oids that exist in the list""" |
|
521 | 522 | reduced = util.sortdict() |
|
522 | 523 | for p in pointers: |
|
523 | 524 | reduced[p.oid()] = p |
|
524 | 525 | return reduced.values() |
|
525 | 526 | |
|
526 | 527 | def _verify(oid, content): |
|
527 | 528 | realoid = hashlib.sha256(content).hexdigest() |
|
528 | 529 | if realoid != oid: |
|
529 | 530 | raise LfsCorruptionError(_('detected corrupt lfs object: %s') % oid, |
|
530 | 531 | hint=_('run hg verify')) |
|
531 | 532 | |
|
532 | 533 | def remote(repo, remote=None): |
|
533 | 534 | """remotestore factory. return a store in _storemap depending on config |
|
534 | 535 | |
|
535 | 536 | If ``lfs.url`` is specified, use that remote endpoint. Otherwise, try to |
|
536 | 537 | infer the endpoint, based on the remote repository using the same path |
|
537 | 538 | adjustments as git. As an extension, 'http' is supported as well so that |
|
538 | 539 | ``hg serve`` works out of the box. |
|
539 | 540 | |
|
540 | 541 | https://github.com/git-lfs/git-lfs/blob/master/docs/api/server-discovery.md |
|
541 | 542 | """ |
|
542 | 543 | lfsurl = repo.ui.config('lfs', 'url') |
|
543 | 544 | url = util.url(lfsurl or '') |
|
544 | 545 | if lfsurl is None: |
|
545 | 546 | if remote: |
|
546 | 547 | path = remote |
|
547 | 548 | elif util.safehasattr(repo, '_subtoppath'): |
|
548 | 549 | # The pull command sets this during the optional update phase, which |
|
549 | 550 | # tells exactly where the pull originated, whether 'paths.default' |
|
550 | 551 | # or explicit. |
|
551 | 552 | path = repo._subtoppath |
|
552 | 553 | else: |
|
553 | 554 | # TODO: investigate 'paths.remote:lfsurl' style path customization, |
|
554 | 555 | # and fall back to inferring from 'paths.remote' if unspecified. |
|
555 | 556 | path = repo.ui.config('paths', 'default') or '' |
|
556 | 557 | |
|
557 | 558 | defaulturl = util.url(path) |
|
558 | 559 | |
|
559 | 560 | # TODO: support local paths as well. |
|
560 | 561 | # TODO: consider the ssh -> https transformation that git applies |
|
561 | 562 | if defaulturl.scheme in (b'http', b'https'): |
|
562 | 563 | if defaulturl.path and defaulturl.path[:-1] != b'/': |
|
563 | 564 | defaulturl.path += b'/' |
|
564 | 565 | defaulturl.path = (defaulturl.path or b'') + b'.git/info/lfs' |
|
565 | 566 | |
|
566 | 567 | url = util.url(bytes(defaulturl)) |
|
567 | 568 | repo.ui.note(_('lfs: assuming remote store: %s\n') % url) |
|
568 | 569 | |
|
569 | 570 | scheme = url.scheme |
|
570 | 571 | if scheme not in _storemap: |
|
571 | 572 | raise error.Abort(_('lfs: unknown url scheme: %s') % scheme) |
|
572 | 573 | return _storemap[scheme](repo, url) |
|
573 | 574 | |
|
574 | 575 | class LfsRemoteError(error.RevlogError): |
|
575 | 576 | pass |
|
576 | 577 | |
|
577 | 578 | class LfsCorruptionError(error.Abort): |
|
578 | 579 | """Raised when a corrupt blob is detected, aborting an operation |
|
579 | 580 | |
|
580 | 581 | It exists to allow specialized handling on the server side.""" |
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