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@@ -1,391 +1,391 b'' | |||
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1 | 1 | # wrapper.py - methods wrapping core mercurial logic |
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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 hashlib |
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11 | 11 | |
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12 | 12 | from mercurial.i18n import _ |
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13 | 13 | from mercurial.node import bin, nullid, short |
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14 | 14 | |
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15 | 15 | from mercurial import ( |
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16 | 16 | error, |
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17 | 17 | filelog, |
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18 | 18 | revlog, |
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19 | 19 | util, |
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20 | 20 | ) |
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21 | 21 | |
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22 | 22 | from ..largefiles import lfutil |
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23 | 23 | |
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24 | 24 | from . import ( |
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25 | 25 | blobstore, |
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26 | 26 | pointer, |
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27 | 27 | ) |
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28 | 28 | |
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29 | 29 | def supportedoutgoingversions(orig, repo): |
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30 | 30 | versions = orig(repo) |
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31 | 31 | if 'lfs' in repo.requirements: |
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32 | 32 | versions.discard('01') |
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33 | 33 | versions.discard('02') |
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34 | 34 | versions.add('03') |
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35 | 35 | return versions |
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36 | 36 | |
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37 | 37 | def allsupportedversions(orig, ui): |
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38 | 38 | versions = orig(ui) |
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39 | 39 | versions.add('03') |
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40 | 40 | return versions |
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41 | 41 | |
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42 | 42 | def _capabilities(orig, repo, proto): |
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43 | 43 | '''Wrap server command to announce lfs server capability''' |
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44 | 44 | caps = orig(repo, proto) |
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45 | 45 | # XXX: change to 'lfs=serve' when separate git server isn't required? |
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46 | 46 | caps.append('lfs') |
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47 | 47 | return caps |
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48 | 48 | |
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49 | 49 | def bypasscheckhash(self, text): |
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50 | 50 | return False |
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51 | 51 | |
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52 | 52 | def readfromstore(self, text): |
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53 | 53 | """Read filelog content from local blobstore transform for flagprocessor. |
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54 | 54 | |
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55 | 55 | Default tranform for flagprocessor, returning contents from blobstore. |
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56 | 56 | Returns a 2-typle (text, validatehash) where validatehash is True as the |
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57 | 57 | contents of the blobstore should be checked using checkhash. |
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58 | 58 | """ |
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59 | 59 | p = pointer.deserialize(text) |
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60 | 60 | oid = p.oid() |
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61 | 61 | store = self.opener.lfslocalblobstore |
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62 | 62 | if not store.has(oid): |
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63 | 63 | p.filename = self.filename |
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64 | 64 | self.opener.lfsremoteblobstore.readbatch([p], store) |
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65 | 65 | |
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66 | 66 | # The caller will validate the content |
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67 | 67 | text = store.read(oid, verify=False) |
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68 | 68 | |
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69 | 69 | # pack hg filelog metadata |
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70 | 70 | hgmeta = {} |
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71 | 71 | for k in p.keys(): |
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72 | 72 | if k.startswith('x-hg-'): |
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73 | 73 | name = k[len('x-hg-'):] |
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74 | 74 | hgmeta[name] = p[k] |
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75 | 75 | if hgmeta or text.startswith('\1\n'): |
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76 | 76 | text = filelog.packmeta(hgmeta, text) |
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77 | 77 | |
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78 | 78 | return (text, True) |
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79 | 79 | |
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80 | 80 | def writetostore(self, text): |
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81 | 81 | # hg filelog metadata (includes rename, etc) |
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82 | 82 | hgmeta, offset = filelog.parsemeta(text) |
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83 | 83 | if offset and offset > 0: |
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84 | 84 | # lfs blob does not contain hg filelog metadata |
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85 | 85 | text = text[offset:] |
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86 | 86 | |
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87 | 87 | # git-lfs only supports sha256 |
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88 | 88 | oid = hashlib.sha256(text).hexdigest() |
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89 | 89 | self.opener.lfslocalblobstore.write(oid, text) |
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90 | 90 | |
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91 | 91 | # replace contents with metadata |
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92 | 92 | longoid = 'sha256:%s' % oid |
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93 |
metadata = pointer.gitlfspointer(oid=longoid, size= |
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93 | metadata = pointer.gitlfspointer(oid=longoid, size='%d' % len(text)) | |
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94 | 94 | |
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95 | 95 | # by default, we expect the content to be binary. however, LFS could also |
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96 | 96 | # be used for non-binary content. add a special entry for non-binary data. |
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97 | 97 | # this will be used by filectx.isbinary(). |
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98 | 98 | if not util.binary(text): |
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99 | 99 | # not hg filelog metadata (affecting commit hash), no "x-hg-" prefix |
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100 | 100 | metadata['x-is-binary'] = '0' |
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101 | 101 | |
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102 | 102 | # translate hg filelog metadata to lfs metadata with "x-hg-" prefix |
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103 | 103 | if hgmeta is not None: |
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104 | 104 | for k, v in hgmeta.iteritems(): |
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105 | 105 | metadata['x-hg-%s' % k] = v |
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106 | 106 | |
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107 | 107 | rawtext = metadata.serialize() |
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108 | 108 | return (rawtext, False) |
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109 | 109 | |
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110 | 110 | def _islfs(rlog, node=None, rev=None): |
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111 | 111 | if rev is None: |
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112 | 112 | if node is None: |
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113 | 113 | # both None - likely working copy content where node is not ready |
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114 | 114 | return False |
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115 | 115 | rev = rlog.rev(node) |
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116 | 116 | else: |
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117 | 117 | node = rlog.node(rev) |
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118 | 118 | if node == nullid: |
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119 | 119 | return False |
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120 | 120 | flags = rlog.flags(rev) |
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121 | 121 | return bool(flags & revlog.REVIDX_EXTSTORED) |
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122 | 122 | |
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123 | 123 | def filelogaddrevision(orig, self, text, transaction, link, p1, p2, |
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124 | 124 | cachedelta=None, node=None, |
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125 | 125 | flags=revlog.REVIDX_DEFAULT_FLAGS, **kwds): |
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126 | 126 | textlen = len(text) |
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127 | 127 | # exclude hg rename meta from file size |
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128 | 128 | meta, offset = filelog.parsemeta(text) |
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129 | 129 | if offset: |
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130 | 130 | textlen -= offset |
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131 | 131 | |
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132 | 132 | lfstrack = self.opener.options['lfstrack'] |
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133 | 133 | |
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134 | 134 | if lfstrack(self.filename, textlen): |
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135 | 135 | flags |= revlog.REVIDX_EXTSTORED |
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136 | 136 | |
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137 | 137 | return orig(self, text, transaction, link, p1, p2, cachedelta=cachedelta, |
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138 | 138 | node=node, flags=flags, **kwds) |
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139 | 139 | |
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140 | 140 | def filelogrenamed(orig, self, node): |
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141 | 141 | if _islfs(self, node): |
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142 | 142 | rawtext = self.revision(node, raw=True) |
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143 | 143 | if not rawtext: |
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144 | 144 | return False |
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145 | 145 | metadata = pointer.deserialize(rawtext) |
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146 | 146 | if 'x-hg-copy' in metadata and 'x-hg-copyrev' in metadata: |
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147 | 147 | return metadata['x-hg-copy'], bin(metadata['x-hg-copyrev']) |
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148 | 148 | else: |
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149 | 149 | return False |
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150 | 150 | return orig(self, node) |
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151 | 151 | |
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152 | 152 | def filelogsize(orig, self, rev): |
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153 | 153 | if _islfs(self, rev=rev): |
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154 | 154 | # fast path: use lfs metadata to answer size |
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155 | 155 | rawtext = self.revision(rev, raw=True) |
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156 | 156 | metadata = pointer.deserialize(rawtext) |
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157 | 157 | return int(metadata['size']) |
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158 | 158 | return orig(self, rev) |
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159 | 159 | |
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160 | 160 | def filectxcmp(orig, self, fctx): |
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161 | 161 | """returns True if text is different than fctx""" |
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162 | 162 | # some fctx (ex. hg-git) is not based on basefilectx and do not have islfs |
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163 | 163 | if self.islfs() and getattr(fctx, 'islfs', lambda: False)(): |
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164 | 164 | # fast path: check LFS oid |
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165 | 165 | p1 = pointer.deserialize(self.rawdata()) |
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166 | 166 | p2 = pointer.deserialize(fctx.rawdata()) |
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167 | 167 | return p1.oid() != p2.oid() |
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168 | 168 | return orig(self, fctx) |
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169 | 169 | |
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170 | 170 | def filectxisbinary(orig, self): |
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171 | 171 | if self.islfs(): |
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172 | 172 | # fast path: use lfs metadata to answer isbinary |
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173 | 173 | metadata = pointer.deserialize(self.rawdata()) |
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174 | 174 | # if lfs metadata says nothing, assume it's binary by default |
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175 | 175 | return bool(int(metadata.get('x-is-binary', 1))) |
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176 | 176 | return orig(self) |
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177 | 177 | |
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178 | 178 | def filectxislfs(self): |
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179 | 179 | return _islfs(self.filelog(), self.filenode()) |
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180 | 180 | |
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181 | 181 | def _updatecatformatter(orig, fm, ctx, matcher, path, decode): |
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182 | 182 | orig(fm, ctx, matcher, path, decode) |
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183 | 183 | fm.data(rawdata=ctx[path].rawdata()) |
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184 | 184 | |
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185 | 185 | def convertsink(orig, sink): |
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186 | 186 | sink = orig(sink) |
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187 | 187 | if sink.repotype == 'hg': |
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188 | 188 | class lfssink(sink.__class__): |
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189 | 189 | def putcommit(self, files, copies, parents, commit, source, revmap, |
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190 | 190 | full, cleanp2): |
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191 | 191 | pc = super(lfssink, self).putcommit |
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192 | 192 | node = pc(files, copies, parents, commit, source, revmap, full, |
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193 | 193 | cleanp2) |
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194 | 194 | |
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195 | 195 | if 'lfs' not in self.repo.requirements: |
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196 | 196 | ctx = self.repo[node] |
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197 | 197 | |
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198 | 198 | # The file list may contain removed files, so check for |
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199 | 199 | # membership before assuming it is in the context. |
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200 | 200 | if any(f in ctx and ctx[f].islfs() for f, n in files): |
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201 | 201 | self.repo.requirements.add('lfs') |
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202 | 202 | self.repo._writerequirements() |
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203 | 203 | |
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204 | 204 | # Permanently enable lfs locally |
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205 | 205 | self.repo.vfs.append( |
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206 | 206 | 'hgrc', util.tonativeeol('\n[extensions]\nlfs=\n')) |
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207 | 207 | |
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208 | 208 | return node |
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209 | 209 | |
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210 | 210 | sink.__class__ = lfssink |
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211 | 211 | |
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212 | 212 | return sink |
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213 | 213 | |
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214 | 214 | def vfsinit(orig, self, othervfs): |
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215 | 215 | orig(self, othervfs) |
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216 | 216 | # copy lfs related options |
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217 | 217 | for k, v in othervfs.options.items(): |
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218 | 218 | if k.startswith('lfs'): |
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219 | 219 | self.options[k] = v |
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220 | 220 | # also copy lfs blobstores. note: this can run before reposetup, so lfs |
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221 | 221 | # blobstore attributes are not always ready at this time. |
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222 | 222 | for name in ['lfslocalblobstore', 'lfsremoteblobstore']: |
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223 | 223 | if util.safehasattr(othervfs, name): |
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224 | 224 | setattr(self, name, getattr(othervfs, name)) |
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225 | 225 | |
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226 | 226 | def hgclone(orig, ui, opts, *args, **kwargs): |
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227 | 227 | result = orig(ui, opts, *args, **kwargs) |
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228 | 228 | |
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229 | 229 | if result is not None: |
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230 | 230 | sourcerepo, destrepo = result |
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231 | 231 | repo = destrepo.local() |
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232 | 232 | |
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233 | 233 | # When cloning to a remote repo (like through SSH), no repo is available |
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234 | 234 | # from the peer. Therefore the hgrc can't be updated. |
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235 | 235 | if not repo: |
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236 | 236 | return result |
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237 | 237 | |
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238 | 238 | # If lfs is required for this repo, permanently enable it locally |
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239 | 239 | if 'lfs' in repo.requirements: |
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240 | 240 | repo.vfs.append('hgrc', |
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241 | 241 | util.tonativeeol('\n[extensions]\nlfs=\n')) |
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242 | 242 | |
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243 | 243 | return result |
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244 | 244 | |
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245 | 245 | def hgpostshare(orig, sourcerepo, destrepo, bookmarks=True, defaultpath=None): |
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246 | 246 | orig(sourcerepo, destrepo, bookmarks, defaultpath) |
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247 | 247 | |
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248 | 248 | # If lfs is required for this repo, permanently enable it locally |
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249 | 249 | if 'lfs' in destrepo.requirements: |
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250 | 250 | destrepo.vfs.append('hgrc', util.tonativeeol('\n[extensions]\nlfs=\n')) |
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251 | 251 | |
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252 | 252 | def _prefetchfiles(repo, ctx, files): |
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253 | 253 | """Ensure that required LFS blobs are present, fetching them as a group if |
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254 | 254 | needed.""" |
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255 | 255 | pointers = [] |
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256 | 256 | localstore = repo.svfs.lfslocalblobstore |
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257 | 257 | |
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258 | 258 | for f in files: |
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259 | 259 | p = pointerfromctx(ctx, f) |
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260 | 260 | if p and not localstore.has(p.oid()): |
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261 | 261 | p.filename = f |
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262 | 262 | pointers.append(p) |
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263 | 263 | |
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264 | 264 | if pointers: |
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265 | 265 | repo.svfs.lfsremoteblobstore.readbatch(pointers, localstore) |
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266 | 266 | |
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267 | 267 | def _canskipupload(repo): |
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268 | 268 | # if remotestore is a null store, upload is a no-op and can be skipped |
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269 | 269 | return isinstance(repo.svfs.lfsremoteblobstore, blobstore._nullremote) |
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270 | 270 | |
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271 | 271 | def candownload(repo): |
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272 | 272 | # if remotestore is a null store, downloads will lead to nothing |
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273 | 273 | return not isinstance(repo.svfs.lfsremoteblobstore, blobstore._nullremote) |
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274 | 274 | |
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275 | 275 | def uploadblobsfromrevs(repo, revs): |
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276 | 276 | '''upload lfs blobs introduced by revs |
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277 | 277 | |
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278 | 278 | Note: also used by other extensions e. g. infinitepush. avoid renaming. |
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279 | 279 | ''' |
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280 | 280 | if _canskipupload(repo): |
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281 | 281 | return |
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282 | 282 | pointers = extractpointers(repo, revs) |
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283 | 283 | uploadblobs(repo, pointers) |
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284 | 284 | |
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285 | 285 | def prepush(pushop): |
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286 | 286 | """Prepush hook. |
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287 | 287 | |
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288 | 288 | Read through the revisions to push, looking for filelog entries that can be |
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289 | 289 | deserialized into metadata so that we can block the push on their upload to |
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290 | 290 | the remote blobstore. |
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291 | 291 | """ |
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292 | 292 | return uploadblobsfromrevs(pushop.repo, pushop.outgoing.missing) |
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293 | 293 | |
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294 | 294 | def push(orig, repo, remote, *args, **kwargs): |
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295 | 295 | """bail on push if the extension isn't enabled on remote when needed""" |
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296 | 296 | if 'lfs' in repo.requirements: |
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297 | 297 | # If the remote peer is for a local repo, the requirement tests in the |
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298 | 298 | # base class method enforce lfs support. Otherwise, some revisions in |
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299 | 299 | # this repo use lfs, and the remote repo needs the extension loaded. |
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300 | 300 | if not remote.local() and not remote.capable('lfs'): |
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301 | 301 | # This is a copy of the message in exchange.push() when requirements |
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302 | 302 | # are missing between local repos. |
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303 | 303 | m = _("required features are not supported in the destination: %s") |
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304 | 304 | raise error.Abort(m % 'lfs', |
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305 | 305 | hint=_('enable the lfs extension on the server')) |
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306 | 306 | return orig(repo, remote, *args, **kwargs) |
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307 | 307 | |
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308 | 308 | def writenewbundle(orig, ui, repo, source, filename, bundletype, outgoing, |
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309 | 309 | *args, **kwargs): |
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310 | 310 | """upload LFS blobs added by outgoing revisions on 'hg bundle'""" |
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311 | 311 | uploadblobsfromrevs(repo, outgoing.missing) |
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312 | 312 | return orig(ui, repo, source, filename, bundletype, outgoing, *args, |
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313 | 313 | **kwargs) |
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314 | 314 | |
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315 | 315 | def extractpointers(repo, revs): |
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316 | 316 | """return a list of lfs pointers added by given revs""" |
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317 | 317 | repo.ui.debug('lfs: computing set of blobs to upload\n') |
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318 | 318 | pointers = {} |
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319 | 319 | for r in revs: |
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320 | 320 | ctx = repo[r] |
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321 | 321 | for p in pointersfromctx(ctx).values(): |
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322 | 322 | pointers[p.oid()] = p |
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323 | 323 | return sorted(pointers.values()) |
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324 | 324 | |
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325 | 325 | def pointerfromctx(ctx, f, removed=False): |
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326 | 326 | """return a pointer for the named file from the given changectx, or None if |
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327 | 327 | the file isn't LFS. |
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328 | 328 | |
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329 | 329 | Optionally, the pointer for a file deleted from the context can be returned. |
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330 | 330 | Since no such pointer is actually stored, and to distinguish from a non LFS |
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331 | 331 | file, this pointer is represented by an empty dict. |
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332 | 332 | """ |
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333 | 333 | _ctx = ctx |
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334 | 334 | if f not in ctx: |
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335 | 335 | if not removed: |
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336 | 336 | return None |
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337 | 337 | if f in ctx.p1(): |
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338 | 338 | _ctx = ctx.p1() |
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339 | 339 | elif f in ctx.p2(): |
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340 | 340 | _ctx = ctx.p2() |
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341 | 341 | else: |
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342 | 342 | return None |
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343 | 343 | fctx = _ctx[f] |
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344 | 344 | if not _islfs(fctx.filelog(), fctx.filenode()): |
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345 | 345 | return None |
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346 | 346 | try: |
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347 | 347 | p = pointer.deserialize(fctx.rawdata()) |
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348 | 348 | if ctx == _ctx: |
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349 | 349 | return p |
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350 | 350 | return {} |
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351 | 351 | except pointer.InvalidPointer as ex: |
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352 | 352 | raise error.Abort(_('lfs: corrupted pointer (%s@%s): %s\n') |
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353 | 353 | % (f, short(_ctx.node()), ex)) |
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354 | 354 | |
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355 | 355 | def pointersfromctx(ctx, removed=False): |
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356 | 356 | """return a dict {path: pointer} for given single changectx. |
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357 | 357 | |
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358 | 358 | If ``removed`` == True and the LFS file was removed from ``ctx``, the value |
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359 | 359 | stored for the path is an empty dict. |
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360 | 360 | """ |
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361 | 361 | result = {} |
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362 | 362 | for f in ctx.files(): |
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363 | 363 | p = pointerfromctx(ctx, f, removed=removed) |
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364 | 364 | if p is not None: |
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365 | 365 | result[f] = p |
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366 | 366 | return result |
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367 | 367 | |
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368 | 368 | def uploadblobs(repo, pointers): |
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369 | 369 | """upload given pointers from local blobstore""" |
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370 | 370 | if not pointers: |
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371 | 371 | return |
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372 | 372 | |
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373 | 373 | remoteblob = repo.svfs.lfsremoteblobstore |
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374 | 374 | remoteblob.writebatch(pointers, repo.svfs.lfslocalblobstore) |
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375 | 375 | |
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376 | 376 | def upgradefinishdatamigration(orig, ui, srcrepo, dstrepo, requirements): |
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377 | 377 | orig(ui, srcrepo, dstrepo, requirements) |
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378 | 378 | |
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379 | 379 | srclfsvfs = srcrepo.svfs.lfslocalblobstore.vfs |
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380 | 380 | dstlfsvfs = dstrepo.svfs.lfslocalblobstore.vfs |
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381 | 381 | |
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382 | 382 | for dirpath, dirs, files in srclfsvfs.walk(): |
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383 | 383 | for oid in files: |
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384 | 384 | ui.write(_('copying lfs blob %s\n') % oid) |
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385 | 385 | lfutil.link(srclfsvfs.join(oid), dstlfsvfs.join(oid)) |
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386 | 386 | |
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387 | 387 | def upgraderequirements(orig, repo): |
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388 | 388 | reqs = orig(repo) |
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389 | 389 | if 'lfs' in repo.requirements: |
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390 | 390 | reqs.add('lfs') |
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391 | 391 | return reqs |
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