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@@ -1,400 +1,400 b'' | |||
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1 | 1 | # bundlerepo.py - repository class for viewing uncompressed bundles |
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2 | 2 | # |
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3 | 3 | # Copyright 2006, 2007 Benoit Boissinot <bboissin@gmail.com> |
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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 | """Repository class for viewing uncompressed bundles. |
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9 | 9 | |
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10 | 10 | This provides a read-only repository interface to bundles as if they |
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11 | 11 | were part of the actual repository. |
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12 | 12 | """ |
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13 | 13 | |
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14 | 14 | from node import nullid |
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15 | 15 | from i18n import _ |
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16 | 16 | import os, tempfile, shutil |
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17 | 17 | import changegroup, util, mdiff, discovery, cmdutil, scmutil, exchange |
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18 | 18 | import localrepo, changelog, manifest, filelog, revlog, error |
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19 | 19 | |
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20 | 20 | class bundlerevlog(revlog.revlog): |
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21 | 21 | def __init__(self, opener, indexfile, bundle, linkmapper): |
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22 | 22 | # How it works: |
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23 | 23 | # To retrieve a revision, we need to know the offset of the revision in |
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24 | 24 | # the bundle (an unbundle object). We store this offset in the index |
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25 | 25 | # (start). The base of the delta is stored in the base field. |
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26 | 26 | # |
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27 | 27 | # To differentiate a rev in the bundle from a rev in the revlog, we |
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28 | 28 | # check revision against repotiprev. |
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29 | 29 | opener = scmutil.readonlyvfs(opener) |
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30 | 30 | revlog.revlog.__init__(self, opener, indexfile) |
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31 | 31 | self.bundle = bundle |
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32 | 32 | n = len(self) |
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33 | 33 | self.repotiprev = n - 1 |
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34 | 34 | chain = None |
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35 | 35 | self.bundlerevs = set() # used by 'bundle()' revset expression |
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36 | 36 | while True: |
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37 | 37 | chunkdata = bundle.deltachunk(chain) |
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38 | 38 | if not chunkdata: |
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39 | 39 | break |
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40 | 40 | node = chunkdata['node'] |
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41 | 41 | p1 = chunkdata['p1'] |
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42 | 42 | p2 = chunkdata['p2'] |
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43 | 43 | cs = chunkdata['cs'] |
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44 | 44 | deltabase = chunkdata['deltabase'] |
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45 | 45 | delta = chunkdata['delta'] |
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46 | 46 | |
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47 | 47 | size = len(delta) |
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48 | 48 | start = bundle.tell() - size |
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49 | 49 | |
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50 | 50 | link = linkmapper(cs) |
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51 | 51 | if node in self.nodemap: |
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52 | 52 | # this can happen if two branches make the same change |
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53 | 53 | chain = node |
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54 | 54 | self.bundlerevs.add(self.nodemap[node]) |
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55 | 55 | continue |
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56 | 56 | |
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57 | 57 | for p in (p1, p2): |
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58 | 58 | if p not in self.nodemap: |
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59 | 59 | raise error.LookupError(p, self.indexfile, |
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60 | 60 | _("unknown parent")) |
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61 | 61 | |
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62 | 62 | if deltabase not in self.nodemap: |
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63 | 63 | raise LookupError(deltabase, self.indexfile, |
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64 | 64 | _('unknown delta base')) |
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65 | 65 | |
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66 | 66 | baserev = self.rev(deltabase) |
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67 | 67 | # start, size, full unc. size, base (unused), link, p1, p2, node |
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68 | 68 | e = (revlog.offset_type(start, 0), size, -1, baserev, link, |
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69 | 69 | self.rev(p1), self.rev(p2), node) |
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70 | 70 | self.index.insert(-1, e) |
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71 | 71 | self.nodemap[node] = n |
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72 | 72 | self.bundlerevs.add(n) |
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73 | 73 | chain = node |
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74 | 74 | n += 1 |
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75 | 75 | |
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76 | 76 | def _chunk(self, rev): |
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77 | 77 | # Warning: in case of bundle, the diff is against what we stored as |
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78 | 78 | # delta base, not against rev - 1 |
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79 | 79 | # XXX: could use some caching |
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80 | 80 | if rev <= self.repotiprev: |
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81 | 81 | return revlog.revlog._chunk(self, rev) |
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82 | 82 | self.bundle.seek(self.start(rev)) |
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83 | 83 | return self.bundle.read(self.length(rev)) |
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84 | 84 | |
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85 | 85 | def revdiff(self, rev1, rev2): |
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86 | 86 | """return or calculate a delta between two revisions""" |
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87 | 87 | if rev1 > self.repotiprev and rev2 > self.repotiprev: |
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88 | 88 | # hot path for bundle |
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89 | 89 | revb = self.index[rev2][3] |
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90 | 90 | if revb == rev1: |
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91 | 91 | return self._chunk(rev2) |
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92 | 92 | elif rev1 <= self.repotiprev and rev2 <= self.repotiprev: |
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93 | 93 | return revlog.revlog.revdiff(self, rev1, rev2) |
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94 | 94 | |
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95 | 95 | return mdiff.textdiff(self.revision(self.node(rev1)), |
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96 | 96 | self.revision(self.node(rev2))) |
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97 | 97 | |
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98 | 98 | def revision(self, nodeorrev): |
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99 | 99 | """return an uncompressed revision of a given node or revision |
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100 | 100 | number. |
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101 | 101 | """ |
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102 | 102 | if isinstance(nodeorrev, int): |
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103 | 103 | rev = nodeorrev |
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104 | 104 | node = self.node(rev) |
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105 | 105 | else: |
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106 | 106 | node = nodeorrev |
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107 | 107 | rev = self.rev(node) |
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108 | 108 | |
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109 | 109 | if node == nullid: |
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110 | 110 | return "" |
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111 | 111 | |
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112 | 112 | text = None |
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113 | 113 | chain = [] |
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114 | 114 | iterrev = rev |
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115 | 115 | # reconstruct the revision if it is from a changegroup |
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116 | 116 | while iterrev > self.repotiprev: |
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117 | 117 | if self._cache and self._cache[1] == iterrev: |
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118 | 118 | text = self._cache[2] |
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119 | 119 | break |
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120 | 120 | chain.append(iterrev) |
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121 | 121 | iterrev = self.index[iterrev][3] |
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122 | 122 | if text is None: |
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123 | 123 | text = self.baserevision(iterrev) |
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124 | 124 | |
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125 | 125 | while chain: |
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126 | 126 | delta = self._chunk(chain.pop()) |
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127 | 127 | text = mdiff.patches(text, [delta]) |
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128 | 128 | |
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129 | 129 | self._checkhash(text, node, rev) |
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130 | 130 | self._cache = (node, rev, text) |
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131 | 131 | return text |
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132 | 132 | |
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133 | 133 | def baserevision(self, nodeorrev): |
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134 | 134 | # Revlog subclasses may override 'revision' method to modify format of |
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135 | 135 | # content retrieved from revlog. To use bundlerevlog with such class one |
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136 | 136 | # needs to override 'baserevision' and make more specific call here. |
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137 | 137 | return revlog.revlog.revision(self, nodeorrev) |
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138 | 138 | |
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139 | 139 | def addrevision(self, text, transaction, link, p1=None, p2=None, d=None): |
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140 | 140 | raise NotImplementedError |
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141 | 141 | def addgroup(self, revs, linkmapper, transaction): |
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142 | 142 | raise NotImplementedError |
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143 | 143 | def strip(self, rev, minlink): |
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144 | 144 | raise NotImplementedError |
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145 | 145 | def checksize(self): |
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146 | 146 | raise NotImplementedError |
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147 | 147 | |
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148 | 148 | class bundlechangelog(bundlerevlog, changelog.changelog): |
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149 | 149 | def __init__(self, opener, bundle): |
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150 | 150 | changelog.changelog.__init__(self, opener) |
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151 | 151 | linkmapper = lambda x: x |
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152 | 152 | bundlerevlog.__init__(self, opener, self.indexfile, bundle, |
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153 | 153 | linkmapper) |
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154 | 154 | |
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155 | 155 | def baserevision(self, nodeorrev): |
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156 | 156 | # Although changelog doesn't override 'revision' method, some extensions |
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157 | 157 | # may replace this class with another that does. Same story with |
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158 | 158 | # manifest and filelog classes. |
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159 | 159 | return changelog.changelog.revision(self, nodeorrev) |
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160 | 160 | |
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161 | 161 | class bundlemanifest(bundlerevlog, manifest.manifest): |
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162 | 162 | def __init__(self, opener, bundle, linkmapper): |
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163 | 163 | manifest.manifest.__init__(self, opener) |
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164 | 164 | bundlerevlog.__init__(self, opener, self.indexfile, bundle, |
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165 | 165 | linkmapper) |
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166 | 166 | |
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167 | 167 | def baserevision(self, nodeorrev): |
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168 | 168 | return manifest.manifest.revision(self, nodeorrev) |
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169 | 169 | |
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170 | 170 | class bundlefilelog(bundlerevlog, filelog.filelog): |
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171 | 171 | def __init__(self, opener, path, bundle, linkmapper, repo): |
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172 | 172 | filelog.filelog.__init__(self, opener, path) |
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173 | 173 | bundlerevlog.__init__(self, opener, self.indexfile, bundle, |
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174 | 174 | linkmapper) |
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175 | 175 | self._repo = repo |
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176 | 176 | |
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177 | 177 | def baserevision(self, nodeorrev): |
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178 | 178 | return filelog.filelog.revision(self, nodeorrev) |
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179 | 179 | |
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180 | 180 | def _file(self, f): |
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181 | 181 | self._repo.file(f) |
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182 | 182 | |
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183 | 183 | class bundlepeer(localrepo.localpeer): |
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184 | 184 | def canpush(self): |
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185 | 185 | return False |
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186 | 186 | |
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187 | 187 | class bundlerepository(localrepo.localrepository): |
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188 | 188 | def __init__(self, ui, path, bundlename): |
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189 | 189 | self._tempparent = None |
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190 | 190 | try: |
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191 | 191 | localrepo.localrepository.__init__(self, ui, path) |
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192 | 192 | except error.RepoError: |
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193 | 193 | self._tempparent = tempfile.mkdtemp() |
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194 | 194 | localrepo.instance(ui, self._tempparent, 1) |
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195 | 195 | localrepo.localrepository.__init__(self, ui, self._tempparent) |
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196 | 196 | self.ui.setconfig('phases', 'publish', False, 'bundlerepo') |
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197 | 197 | |
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198 | 198 | if path: |
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199 | 199 | self._url = 'bundle:' + util.expandpath(path) + '+' + bundlename |
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200 | 200 | else: |
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201 | 201 | self._url = 'bundle:' + bundlename |
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202 | 202 | |
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203 | 203 | self.tempfile = None |
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204 | 204 | f = util.posixfile(bundlename, "rb") |
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205 | 205 | self.bundle = exchange.readbundle(ui, f, bundlename) |
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206 | 206 | if self.bundle.compressed(): |
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207 | 207 | fdtemp, temp = self.vfs.mkstemp(prefix="hg-bundle-", |
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208 | 208 | suffix=".hg10un") |
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209 | 209 | self.tempfile = temp |
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210 | 210 | fptemp = os.fdopen(fdtemp, 'wb') |
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211 | 211 | |
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212 | 212 | try: |
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213 | 213 | fptemp.write("HG10UN") |
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214 | 214 | while True: |
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215 | 215 | chunk = self.bundle.read(2**18) |
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216 | 216 | if not chunk: |
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217 | 217 | break |
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218 | 218 | fptemp.write(chunk) |
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219 | 219 | finally: |
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220 | 220 | fptemp.close() |
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221 | 221 | |
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222 | 222 | f = self.vfs.open(self.tempfile, mode="rb") |
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223 | 223 | self.bundle = exchange.readbundle(ui, f, bundlename, self.vfs) |
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224 | 224 | |
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225 | 225 | # dict with the mapping 'filename' -> position in the bundle |
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226 | 226 | self.bundlefilespos = {} |
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227 | 227 | |
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228 | 228 | @localrepo.unfilteredpropertycache |
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229 | 229 | def changelog(self): |
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230 | 230 | # consume the header if it exists |
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231 | 231 | self.bundle.changelogheader() |
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232 | 232 | c = bundlechangelog(self.sopener, self.bundle) |
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233 | 233 | self.manstart = self.bundle.tell() |
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234 | 234 | return c |
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235 | 235 | |
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236 | 236 | @localrepo.unfilteredpropertycache |
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237 | 237 | def manifest(self): |
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238 | 238 | self.bundle.seek(self.manstart) |
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239 | 239 | # consume the header if it exists |
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240 | 240 | self.bundle.manifestheader() |
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241 | 241 | m = bundlemanifest(self.sopener, self.bundle, self.changelog.rev) |
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242 | 242 | self.filestart = self.bundle.tell() |
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243 | 243 | return m |
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244 | 244 | |
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245 | 245 | @localrepo.unfilteredpropertycache |
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246 | 246 | def manstart(self): |
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247 | 247 | self.changelog |
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248 | 248 | return self.manstart |
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249 | 249 | |
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250 | 250 | @localrepo.unfilteredpropertycache |
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251 | 251 | def filestart(self): |
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252 | 252 | self.manifest |
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253 | 253 | return self.filestart |
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254 | 254 | |
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255 | 255 | def url(self): |
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256 | 256 | return self._url |
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257 | 257 | |
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258 | 258 | def file(self, f): |
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259 | 259 | if not self.bundlefilespos: |
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260 | 260 | self.bundle.seek(self.filestart) |
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261 | 261 | while True: |
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262 | 262 | chunkdata = self.bundle.filelogheader() |
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263 | 263 | if not chunkdata: |
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264 | 264 | break |
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265 | 265 | fname = chunkdata['filename'] |
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266 | 266 | self.bundlefilespos[fname] = self.bundle.tell() |
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267 | 267 | while True: |
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268 | 268 | c = self.bundle.deltachunk(None) |
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269 | 269 | if not c: |
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270 | 270 | break |
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271 | 271 | |
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272 | 272 | if f in self.bundlefilespos: |
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273 | 273 | self.bundle.seek(self.bundlefilespos[f]) |
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274 | 274 | return bundlefilelog(self.sopener, f, self.bundle, |
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275 | 275 | self.changelog.rev, self) |
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276 | 276 | else: |
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277 | 277 | return filelog.filelog(self.sopener, f) |
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278 | 278 | |
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279 | 279 | def close(self): |
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280 | 280 | """Close assigned bundle file immediately.""" |
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281 | 281 | self.bundle.close() |
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282 | 282 | if self.tempfile is not None: |
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283 | 283 | self.vfs.unlink(self.tempfile) |
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284 | 284 | if self._tempparent: |
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285 | 285 | shutil.rmtree(self._tempparent, True) |
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286 | 286 | |
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287 | 287 | def cancopy(self): |
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288 | 288 | return False |
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289 | 289 | |
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290 | 290 | def peer(self): |
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291 | 291 | return bundlepeer(self) |
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292 | 292 | |
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293 | 293 | def getcwd(self): |
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294 | 294 | return os.getcwd() # always outside the repo |
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295 | 295 | |
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296 | 296 | |
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297 | 297 | def instance(ui, path, create): |
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298 | 298 | if create: |
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299 | 299 | raise util.Abort(_('cannot create new bundle repository')) |
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300 | 300 | parentpath = ui.config("bundle", "mainreporoot", "") |
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301 | 301 | if not parentpath: |
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302 | 302 | # try to find the correct path to the working directory repo |
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303 | 303 | parentpath = cmdutil.findrepo(os.getcwd()) |
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304 | 304 | if parentpath is None: |
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305 | 305 | parentpath = '' |
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306 | 306 | if parentpath: |
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307 | 307 | # Try to make the full path relative so we get a nice, short URL. |
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308 | 308 | # In particular, we don't want temp dir names in test outputs. |
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309 | 309 | cwd = os.getcwd() |
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310 | 310 | if parentpath == cwd: |
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311 | 311 | parentpath = '' |
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312 | 312 | else: |
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313 | 313 | cwd = os.path.join(cwd,'') |
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314 | 314 | if parentpath.startswith(cwd): |
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315 | 315 | parentpath = parentpath[len(cwd):] |
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316 | 316 | u = util.url(path) |
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317 | 317 | path = u.localpath() |
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318 | 318 | if u.scheme == 'bundle': |
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319 | 319 | s = path.split("+", 1) |
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320 | 320 | if len(s) == 1: |
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321 | 321 | repopath, bundlename = parentpath, s[0] |
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322 | 322 | else: |
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323 | 323 | repopath, bundlename = s |
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324 | 324 | else: |
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325 | 325 | repopath, bundlename = parentpath, path |
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326 | 326 | return bundlerepository(ui, repopath, bundlename) |
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327 | 327 | |
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328 | 328 | def getremotechanges(ui, repo, other, onlyheads=None, bundlename=None, |
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329 | 329 | force=False): |
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330 | 330 | '''obtains a bundle of changes incoming from other |
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331 | 331 | |
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332 | 332 | "onlyheads" restricts the returned changes to those reachable from the |
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333 | 333 | specified heads. |
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334 | 334 | "bundlename", if given, stores the bundle to this file path permanently; |
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335 | 335 | otherwise it's stored to a temp file and gets deleted again when you call |
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336 | 336 | the returned "cleanupfn". |
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337 | 337 | "force" indicates whether to proceed on unrelated repos. |
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338 | 338 | |
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339 | 339 | Returns a tuple (local, csets, cleanupfn): |
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340 | 340 | |
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341 | 341 | "local" is a local repo from which to obtain the actual incoming |
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342 | 342 | changesets; it is a bundlerepo for the obtained bundle when the |
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343 | 343 | original "other" is remote. |
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344 | 344 | "csets" lists the incoming changeset node ids. |
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345 | 345 | "cleanupfn" must be called without arguments when you're done processing |
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346 | 346 | the changes; it closes both the original "other" and the one returned |
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347 | 347 | here. |
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348 | 348 | ''' |
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349 | 349 | tmp = discovery.findcommonincoming(repo, other, heads=onlyheads, |
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350 | 350 | force=force) |
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351 | 351 | common, incoming, rheads = tmp |
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352 | 352 | if not incoming: |
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353 | 353 | try: |
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354 | 354 | if bundlename: |
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355 | os.unlink(bundlename) | |
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355 | repo.vfs.unlink(bundlename) | |
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356 | 356 | except OSError: |
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357 | 357 | pass |
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358 | 358 | return repo, [], other.close |
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359 | 359 | |
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360 | 360 | bundle = None |
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361 | 361 | bundlerepo = None |
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362 | 362 | localrepo = other.local() |
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363 | 363 | if bundlename or not localrepo: |
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364 | 364 | # create a bundle (uncompressed if other repo is not local) |
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365 | 365 | |
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366 | 366 | if other.capable('getbundle'): |
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367 | 367 | cg = other.getbundle('incoming', common=common, heads=rheads) |
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368 | 368 | elif onlyheads is None and not other.capable('changegroupsubset'): |
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369 | 369 | # compat with older servers when pulling all remote heads |
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370 | 370 | cg = other.changegroup(incoming, "incoming") |
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371 | 371 | rheads = None |
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372 | 372 | else: |
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373 | 373 | cg = other.changegroupsubset(incoming, rheads, 'incoming') |
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374 | 374 | bundletype = localrepo and "HG10BZ" or "HG10UN" |
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375 | 375 | fname = bundle = changegroup.writebundle(cg, bundlename, bundletype) |
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376 | 376 | # keep written bundle? |
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377 | 377 | if bundlename: |
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378 | 378 | bundle = None |
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379 | 379 | if not localrepo: |
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380 | 380 | # use the created uncompressed bundlerepo |
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381 | 381 | localrepo = bundlerepo = bundlerepository(repo.baseui, repo.root, |
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382 | 382 | fname) |
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383 | 383 | # this repo contains local and other now, so filter out local again |
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384 | 384 | common = repo.heads() |
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385 | 385 | if localrepo: |
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386 | 386 | # Part of common may be remotely filtered |
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387 | 387 | # So use an unfiltered version |
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388 | 388 | # The discovery process probably need cleanup to avoid that |
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389 | 389 | localrepo = localrepo.unfiltered() |
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390 | 390 | |
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391 | 391 | csets = localrepo.changelog.findmissing(common, rheads) |
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392 | 392 | |
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393 | 393 | def cleanup(): |
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394 | 394 | if bundlerepo: |
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395 | 395 | bundlerepo.close() |
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396 | 396 | if bundle: |
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397 | os.unlink(bundle) | |
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397 | repo.vfs.unlink(bundle) | |
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398 | 398 | other.close() |
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399 | 399 | |
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400 | 400 | return (localrepo, csets, cleanup) |
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