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@@ -1,1043 +1,1043 b'' | |||
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1 | 1 | # changegroup.py - Mercurial changegroup manipulation functions |
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2 | 2 | # |
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3 | 3 | # Copyright 2006 Matt Mackall <mpm@selenic.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 | from __future__ import absolute_import |
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9 | 9 | |
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10 | 10 | import os |
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11 | 11 | import struct |
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12 | 12 | import tempfile |
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13 | 13 | import weakref |
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14 | 14 | |
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15 | 15 | from .i18n import _ |
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16 | 16 | from .node import ( |
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17 | 17 | hex, |
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18 | 18 | nullrev, |
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19 | 19 | short, |
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20 | 20 | ) |
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21 | 21 | |
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22 | 22 | from . import ( |
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23 | 23 | branchmap, |
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24 | 24 | dagutil, |
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25 | 25 | discovery, |
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26 | 26 | error, |
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27 | 27 | mdiff, |
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28 | 28 | phases, |
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29 | 29 | util, |
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30 | 30 | ) |
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31 | 31 | |
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32 | 32 | _CHANGEGROUPV1_DELTA_HEADER = "20s20s20s20s" |
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33 | 33 | _CHANGEGROUPV2_DELTA_HEADER = "20s20s20s20s20s" |
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34 | 34 | _CHANGEGROUPV3_DELTA_HEADER = ">20s20s20s20s20sH" |
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35 | 35 | |
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36 | 36 | def readexactly(stream, n): |
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37 | 37 | '''read n bytes from stream.read and abort if less was available''' |
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38 | 38 | s = stream.read(n) |
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39 | 39 | if len(s) < n: |
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40 | 40 | raise error.Abort(_("stream ended unexpectedly" |
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41 | 41 | " (got %d bytes, expected %d)") |
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42 | 42 | % (len(s), n)) |
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43 | 43 | return s |
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44 | 44 | |
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45 | 45 | def getchunk(stream): |
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46 | 46 | """return the next chunk from stream as a string""" |
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47 | 47 | d = readexactly(stream, 4) |
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48 | 48 | l = struct.unpack(">l", d)[0] |
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49 | 49 | if l <= 4: |
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50 | 50 | if l: |
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51 | 51 | raise error.Abort(_("invalid chunk length %d") % l) |
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52 | 52 | return "" |
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53 | 53 | return readexactly(stream, l - 4) |
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54 | 54 | |
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55 | 55 | def chunkheader(length): |
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56 | 56 | """return a changegroup chunk header (string)""" |
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57 | 57 | return struct.pack(">l", length + 4) |
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58 | 58 | |
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59 | 59 | def closechunk(): |
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60 | 60 | """return a changegroup chunk header (string) for a zero-length chunk""" |
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61 | 61 | return struct.pack(">l", 0) |
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62 | 62 | |
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63 | 63 | def combineresults(results): |
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64 | 64 | """logic to combine 0 or more addchangegroup results into one""" |
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65 | 65 | changedheads = 0 |
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66 | 66 | result = 1 |
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67 | 67 | for ret in results: |
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68 | 68 | # If any changegroup result is 0, return 0 |
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69 | 69 | if ret == 0: |
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70 | 70 | result = 0 |
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71 | 71 | break |
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72 | 72 | if ret < -1: |
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73 | 73 | changedheads += ret + 1 |
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74 | 74 | elif ret > 1: |
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75 | 75 | changedheads += ret - 1 |
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76 | 76 | if changedheads > 0: |
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77 | 77 | result = 1 + changedheads |
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78 | 78 | elif changedheads < 0: |
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79 | 79 | result = -1 + changedheads |
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80 | 80 | return result |
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81 | 81 | |
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82 | 82 | def writechunks(ui, chunks, filename, vfs=None): |
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83 | 83 | """Write chunks to a file and return its filename. |
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84 | 84 | |
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85 | 85 | The stream is assumed to be a bundle file. |
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86 | 86 | Existing files will not be overwritten. |
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87 | 87 | If no filename is specified, a temporary file is created. |
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88 | 88 | """ |
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89 | 89 | fh = None |
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90 | 90 | cleanup = None |
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91 | 91 | try: |
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92 | 92 | if filename: |
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93 | 93 | if vfs: |
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94 | 94 | fh = vfs.open(filename, "wb") |
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95 | 95 | else: |
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96 | 96 | # Increase default buffer size because default is usually |
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97 | 97 | # small (4k is common on Linux). |
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98 | 98 | fh = open(filename, "wb", 131072) |
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99 | 99 | else: |
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100 | 100 | fd, filename = tempfile.mkstemp(prefix="hg-bundle-", suffix=".hg") |
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101 | 101 | fh = os.fdopen(fd, "wb") |
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102 | 102 | cleanup = filename |
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103 | 103 | for c in chunks: |
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104 | 104 | fh.write(c) |
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105 | 105 | cleanup = None |
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106 | 106 | return filename |
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107 | 107 | finally: |
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108 | 108 | if fh is not None: |
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109 | 109 | fh.close() |
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110 | 110 | if cleanup is not None: |
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111 | 111 | if filename and vfs: |
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112 | 112 | vfs.unlink(cleanup) |
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113 | 113 | else: |
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114 | 114 | os.unlink(cleanup) |
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115 | 115 | |
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116 | 116 | class cg1unpacker(object): |
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117 | 117 | """Unpacker for cg1 changegroup streams. |
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118 | 118 | |
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119 | 119 | A changegroup unpacker handles the framing of the revision data in |
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120 | 120 | the wire format. Most consumers will want to use the apply() |
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121 | 121 | method to add the changes from the changegroup to a repository. |
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122 | 122 | |
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123 | 123 | If you're forwarding a changegroup unmodified to another consumer, |
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124 | 124 | use getchunks(), which returns an iterator of changegroup |
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125 | 125 | chunks. This is mostly useful for cases where you need to know the |
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126 | 126 | data stream has ended by observing the end of the changegroup. |
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127 | 127 | |
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128 | 128 | deltachunk() is useful only if you're applying delta data. Most |
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129 | 129 | consumers should prefer apply() instead. |
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130 | 130 | |
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131 | 131 | A few other public methods exist. Those are used only for |
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132 | 132 | bundlerepo and some debug commands - their use is discouraged. |
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133 | 133 | """ |
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134 | 134 | deltaheader = _CHANGEGROUPV1_DELTA_HEADER |
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135 | 135 | deltaheadersize = struct.calcsize(deltaheader) |
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136 | 136 | version = '01' |
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137 | 137 | _grouplistcount = 1 # One list of files after the manifests |
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138 | 138 | |
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139 | 139 | def __init__(self, fh, alg, extras=None): |
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140 | 140 | if alg == 'UN': |
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141 | 141 | alg = None # get more modern without breaking too much |
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142 | 142 | if not alg in util.decompressors: |
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143 | 143 | raise error.Abort(_('unknown stream compression type: %s') |
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144 | 144 | % alg) |
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145 | 145 | if alg == 'BZ': |
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146 | 146 | alg = '_truncatedBZ' |
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147 | 147 | self._stream = util.decompressors[alg](fh) |
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148 | 148 | self._type = alg |
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149 | 149 | self.extras = extras or {} |
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150 | 150 | self.callback = None |
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151 | 151 | |
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152 | 152 | # These methods (compressed, read, seek, tell) all appear to only |
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153 | 153 | # be used by bundlerepo, but it's a little hard to tell. |
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154 | 154 | def compressed(self): |
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155 | 155 | return self._type is not None |
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156 | 156 | def read(self, l): |
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157 | 157 | return self._stream.read(l) |
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158 | 158 | def seek(self, pos): |
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159 | 159 | return self._stream.seek(pos) |
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160 | 160 | def tell(self): |
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161 | 161 | return self._stream.tell() |
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162 | 162 | def close(self): |
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163 | 163 | return self._stream.close() |
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164 | 164 | |
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165 | 165 | def _chunklength(self): |
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166 | 166 | d = readexactly(self._stream, 4) |
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167 | 167 | l = struct.unpack(">l", d)[0] |
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168 | 168 | if l <= 4: |
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169 | 169 | if l: |
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170 | 170 | raise error.Abort(_("invalid chunk length %d") % l) |
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171 | 171 | return 0 |
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172 | 172 | if self.callback: |
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173 | 173 | self.callback() |
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174 | 174 | return l - 4 |
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175 | 175 | |
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176 | 176 | def changelogheader(self): |
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177 | 177 | """v10 does not have a changelog header chunk""" |
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178 | 178 | return {} |
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179 | 179 | |
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180 | 180 | def manifestheader(self): |
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181 | 181 | """v10 does not have a manifest header chunk""" |
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182 | 182 | return {} |
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183 | 183 | |
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184 | 184 | def filelogheader(self): |
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185 | 185 | """return the header of the filelogs chunk, v10 only has the filename""" |
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186 | 186 | l = self._chunklength() |
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187 | 187 | if not l: |
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188 | 188 | return {} |
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189 | 189 | fname = readexactly(self._stream, l) |
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190 | 190 | return {'filename': fname} |
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191 | 191 | |
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192 | 192 | def _deltaheader(self, headertuple, prevnode): |
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193 | 193 | node, p1, p2, cs = headertuple |
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194 | 194 | if prevnode is None: |
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195 | 195 | deltabase = p1 |
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196 | 196 | else: |
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197 | 197 | deltabase = prevnode |
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198 | 198 | flags = 0 |
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199 | 199 | return node, p1, p2, deltabase, cs, flags |
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200 | 200 | |
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201 | 201 | def deltachunk(self, prevnode): |
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202 | 202 | l = self._chunklength() |
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203 | 203 | if not l: |
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204 | 204 | return {} |
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205 | 205 | headerdata = readexactly(self._stream, self.deltaheadersize) |
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206 | 206 | header = struct.unpack(self.deltaheader, headerdata) |
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207 | 207 | delta = readexactly(self._stream, l - self.deltaheadersize) |
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208 | 208 | node, p1, p2, deltabase, cs, flags = self._deltaheader(header, prevnode) |
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209 | 209 | return {'node': node, 'p1': p1, 'p2': p2, 'cs': cs, |
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210 | 210 | 'deltabase': deltabase, 'delta': delta, 'flags': flags} |
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211 | 211 | |
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212 | 212 | def getchunks(self): |
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213 | 213 | """returns all the chunks contains in the bundle |
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214 | 214 | |
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215 | 215 | Used when you need to forward the binary stream to a file or another |
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216 | 216 | network API. To do so, it parse the changegroup data, otherwise it will |
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217 | 217 | block in case of sshrepo because it don't know the end of the stream. |
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218 | 218 | """ |
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219 | 219 | # an empty chunkgroup is the end of the changegroup |
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220 | 220 | # a changegroup has at least 2 chunkgroups (changelog and manifest). |
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221 | 221 | # after that, changegroup versions 1 and 2 have a series of groups |
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222 | 222 | # with one group per file. changegroup 3 has a series of directory |
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223 | 223 | # manifests before the files. |
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224 | 224 | count = 0 |
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225 | 225 | emptycount = 0 |
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226 | 226 | while emptycount < self._grouplistcount: |
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227 | 227 | empty = True |
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228 | 228 | count += 1 |
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229 | 229 | while True: |
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230 | 230 | chunk = getchunk(self) |
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231 | 231 | if not chunk: |
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232 | 232 | if empty and count > 2: |
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233 | 233 | emptycount += 1 |
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234 | 234 | break |
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235 | 235 | empty = False |
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236 | 236 | yield chunkheader(len(chunk)) |
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237 | 237 | pos = 0 |
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238 | 238 | while pos < len(chunk): |
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239 | 239 | next = pos + 2**20 |
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240 | 240 | yield chunk[pos:next] |
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241 | 241 | pos = next |
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242 | 242 | yield closechunk() |
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243 | 243 | |
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244 | 244 | def _unpackmanifests(self, repo, revmap, trp, prog, numchanges): |
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245 | 245 | # We know that we'll never have more manifests than we had |
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246 | 246 | # changesets. |
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247 | 247 | self.callback = prog(_('manifests'), numchanges) |
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248 | 248 | # no need to check for empty manifest group here: |
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249 | 249 | # if the result of the merge of 1 and 2 is the same in 3 and 4, |
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250 | 250 | # no new manifest will be created and the manifest group will |
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251 | 251 | # be empty during the pull |
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252 | 252 | self.manifestheader() |
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253 | 253 | repo.manifest.addgroup(self, revmap, trp) |
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254 | 254 | repo.ui.progress(_('manifests'), None) |
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255 | 255 | self.callback = None |
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256 | 256 | |
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257 | 257 | def apply(self, repo, srctype, url, emptyok=False, |
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258 | 258 | targetphase=phases.draft, expectedtotal=None): |
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259 | 259 | """Add the changegroup returned by source.read() to this repo. |
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260 | 260 | srctype is a string like 'push', 'pull', or 'unbundle'. url is |
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261 | 261 | the URL of the repo where this changegroup is coming from. |
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262 | 262 | |
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263 | 263 | Return an integer summarizing the change to this repo: |
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264 | 264 | - nothing changed or no source: 0 |
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265 | 265 | - more heads than before: 1+added heads (2..n) |
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266 | 266 | - fewer heads than before: -1-removed heads (-2..-n) |
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267 | 267 | - number of heads stays the same: 1 |
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268 | 268 | """ |
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269 | 269 | repo = repo.unfiltered() |
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270 | 270 | def csmap(x): |
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271 | 271 | repo.ui.debug("add changeset %s\n" % short(x)) |
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272 | 272 | return len(cl) |
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273 | 273 | |
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274 | 274 | def revmap(x): |
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275 | 275 | return cl.rev(x) |
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276 | 276 | |
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277 | 277 | changesets = files = revisions = 0 |
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278 | 278 | |
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279 | 279 | try: |
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280 | 280 | with repo.transaction("\n".join([srctype, |
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281 | 281 | util.hidepassword(url)])) as tr: |
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282 | 282 | # The transaction could have been created before and already |
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283 | 283 | # carries source information. In this case we use the top |
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284 | 284 | # level data. We overwrite the argument because we need to use |
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285 | 285 | # the top level value (if they exist) in this function. |
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286 | 286 | srctype = tr.hookargs.setdefault('source', srctype) |
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287 | 287 | url = tr.hookargs.setdefault('url', url) |
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288 | 288 | repo.hook('prechangegroup', throw=True, **tr.hookargs) |
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289 | 289 | |
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290 | 290 | # write changelog data to temp files so concurrent readers |
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291 | 291 | # will not see an inconsistent view |
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292 | 292 | cl = repo.changelog |
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293 | 293 | cl.delayupdate(tr) |
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294 | 294 | oldheads = cl.heads() |
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295 | 295 | |
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296 | 296 | trp = weakref.proxy(tr) |
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297 | 297 | # pull off the changeset group |
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298 | 298 | repo.ui.status(_("adding changesets\n")) |
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299 | 299 | clstart = len(cl) |
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300 | 300 | class prog(object): |
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301 | 301 | def __init__(self, step, total): |
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302 | 302 | self._step = step |
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303 | 303 | self._total = total |
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304 | 304 | self._count = 1 |
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305 | 305 | def __call__(self): |
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306 | 306 | repo.ui.progress(self._step, self._count, |
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307 | 307 | unit=_('chunks'), total=self._total) |
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308 | 308 | self._count += 1 |
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309 | 309 | self.callback = prog(_('changesets'), expectedtotal) |
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310 | 310 | |
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311 | 311 | efiles = set() |
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312 | 312 | def onchangelog(cl, node): |
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313 | 313 | efiles.update(cl.readfiles(node)) |
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314 | 314 | |
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315 | 315 | self.changelogheader() |
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316 | 316 | srccontent = cl.addgroup(self, csmap, trp, |
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317 | 317 | addrevisioncb=onchangelog) |
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318 | 318 | efiles = len(efiles) |
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319 | 319 | |
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320 | 320 | if not (srccontent or emptyok): |
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321 | 321 | raise error.Abort(_("received changelog group is empty")) |
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322 | 322 | clend = len(cl) |
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323 | 323 | changesets = clend - clstart |
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324 | 324 | repo.ui.progress(_('changesets'), None) |
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325 | 325 | self.callback = None |
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326 | 326 | |
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327 | 327 | # pull off the manifest group |
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328 | 328 | repo.ui.status(_("adding manifests\n")) |
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329 | 329 | self._unpackmanifests(repo, revmap, trp, prog, changesets) |
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330 | 330 | |
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331 | 331 | needfiles = {} |
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332 | 332 | if repo.ui.configbool('server', 'validate', default=False): |
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333 | 333 | cl = repo.changelog |
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334 | 334 | ml = repo.manifestlog |
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335 | 335 | # validate incoming csets have their manifests |
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336 | 336 | for cset in xrange(clstart, clend): |
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337 |
mfnode = cl. |
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337 | mfnode = cl.changelogrevision(cset).manifest | |
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338 | 338 | mfest = ml[mfnode].readdelta() |
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339 | 339 | # store file nodes we must see |
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340 | 340 | for f, n in mfest.iteritems(): |
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341 | 341 | needfiles.setdefault(f, set()).add(n) |
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342 | 342 | |
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343 | 343 | # process the files |
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344 | 344 | repo.ui.status(_("adding file changes\n")) |
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345 | 345 | newrevs, newfiles = _addchangegroupfiles( |
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346 | 346 | repo, self, revmap, trp, efiles, needfiles) |
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347 | 347 | revisions += newrevs |
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348 | 348 | files += newfiles |
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349 | 349 | |
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350 | 350 | dh = 0 |
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351 | 351 | if oldheads: |
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352 | 352 | heads = cl.heads() |
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353 | 353 | dh = len(heads) - len(oldheads) |
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354 | 354 | for h in heads: |
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355 | 355 | if h not in oldheads and repo[h].closesbranch(): |
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356 | 356 | dh -= 1 |
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357 | 357 | htext = "" |
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358 | 358 | if dh: |
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359 | 359 | htext = _(" (%+d heads)") % dh |
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360 | 360 | |
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361 | 361 | repo.ui.status(_("added %d changesets" |
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362 | 362 | " with %d changes to %d files%s\n") |
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363 | 363 | % (changesets, revisions, files, htext)) |
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364 | 364 | repo.invalidatevolatilesets() |
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365 | 365 | |
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366 | 366 | if changesets > 0: |
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367 | 367 | if 'node' not in tr.hookargs: |
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368 | 368 | tr.hookargs['node'] = hex(cl.node(clstart)) |
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369 | 369 | tr.hookargs['node_last'] = hex(cl.node(clend - 1)) |
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370 | 370 | hookargs = dict(tr.hookargs) |
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371 | 371 | else: |
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372 | 372 | hookargs = dict(tr.hookargs) |
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373 | 373 | hookargs['node'] = hex(cl.node(clstart)) |
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374 | 374 | hookargs['node_last'] = hex(cl.node(clend - 1)) |
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375 | 375 | repo.hook('pretxnchangegroup', throw=True, **hookargs) |
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376 | 376 | |
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377 | 377 | added = [cl.node(r) for r in xrange(clstart, clend)] |
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378 | 378 | publishing = repo.publishing() |
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379 | 379 | if srctype in ('push', 'serve'): |
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380 | 380 | # Old servers can not push the boundary themselves. |
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381 | 381 | # New servers won't push the boundary if changeset already |
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382 | 382 | # exists locally as secret |
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383 | 383 | # |
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384 | 384 | # We should not use added here but the list of all change in |
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385 | 385 | # the bundle |
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386 | 386 | if publishing: |
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387 | 387 | phases.advanceboundary(repo, tr, phases.public, |
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388 | 388 | srccontent) |
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389 | 389 | else: |
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390 | 390 | # Those changesets have been pushed from the |
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391 | 391 | # outside, their phases are going to be pushed |
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392 | 392 | # alongside. Therefor `targetphase` is |
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393 | 393 | # ignored. |
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394 | 394 | phases.advanceboundary(repo, tr, phases.draft, |
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395 | 395 | srccontent) |
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396 | 396 | phases.retractboundary(repo, tr, phases.draft, added) |
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397 | 397 | elif srctype != 'strip': |
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398 | 398 | # publishing only alter behavior during push |
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399 | 399 | # |
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400 | 400 | # strip should not touch boundary at all |
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401 | 401 | phases.retractboundary(repo, tr, targetphase, added) |
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402 | 402 | |
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403 | 403 | if changesets > 0: |
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404 | 404 | if srctype != 'strip': |
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405 | 405 | # During strip, branchcache is invalid but |
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406 | 406 | # coming call to `destroyed` will repair it. |
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407 | 407 | # In other case we can safely update cache on |
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408 | 408 | # disk. |
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409 | 409 | repo.ui.debug('updating the branch cache\n') |
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410 | 410 | branchmap.updatecache(repo.filtered('served')) |
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411 | 411 | |
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412 | 412 | def runhooks(): |
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413 | 413 | # These hooks run when the lock releases, not when the |
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414 | 414 | # transaction closes. So it's possible for the changelog |
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415 | 415 | # to have changed since we last saw it. |
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416 | 416 | if clstart >= len(repo): |
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417 | 417 | return |
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418 | 418 | |
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419 | 419 | repo.hook("changegroup", **hookargs) |
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420 | 420 | |
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421 | 421 | for n in added: |
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422 | 422 | args = hookargs.copy() |
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423 | 423 | args['node'] = hex(n) |
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424 | 424 | del args['node_last'] |
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425 | 425 | repo.hook("incoming", **args) |
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426 | 426 | |
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427 | 427 | newheads = [h for h in repo.heads() |
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428 | 428 | if h not in oldheads] |
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429 | 429 | repo.ui.log("incoming", |
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430 | 430 | "%s incoming changes - new heads: %s\n", |
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431 | 431 | len(added), |
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432 | 432 | ', '.join([hex(c[:6]) for c in newheads])) |
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433 | 433 | |
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434 | 434 | tr.addpostclose('changegroup-runhooks-%020i' % clstart, |
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435 | 435 | lambda tr: repo._afterlock(runhooks)) |
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436 | 436 | finally: |
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437 | 437 | repo.ui.flush() |
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438 | 438 | # never return 0 here: |
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439 | 439 | if dh < 0: |
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440 | 440 | return dh - 1 |
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441 | 441 | else: |
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442 | 442 | return dh + 1 |
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443 | 443 | |
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444 | 444 | class cg2unpacker(cg1unpacker): |
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445 | 445 | """Unpacker for cg2 streams. |
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446 | 446 | |
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447 | 447 | cg2 streams add support for generaldelta, so the delta header |
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448 | 448 | format is slightly different. All other features about the data |
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449 | 449 | remain the same. |
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450 | 450 | """ |
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451 | 451 | deltaheader = _CHANGEGROUPV2_DELTA_HEADER |
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452 | 452 | deltaheadersize = struct.calcsize(deltaheader) |
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453 | 453 | version = '02' |
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454 | 454 | |
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455 | 455 | def _deltaheader(self, headertuple, prevnode): |
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456 | 456 | node, p1, p2, deltabase, cs = headertuple |
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457 | 457 | flags = 0 |
|
458 | 458 | return node, p1, p2, deltabase, cs, flags |
|
459 | 459 | |
|
460 | 460 | class cg3unpacker(cg2unpacker): |
|
461 | 461 | """Unpacker for cg3 streams. |
|
462 | 462 | |
|
463 | 463 | cg3 streams add support for exchanging treemanifests and revlog |
|
464 | 464 | flags. It adds the revlog flags to the delta header and an empty chunk |
|
465 | 465 | separating manifests and files. |
|
466 | 466 | """ |
|
467 | 467 | deltaheader = _CHANGEGROUPV3_DELTA_HEADER |
|
468 | 468 | deltaheadersize = struct.calcsize(deltaheader) |
|
469 | 469 | version = '03' |
|
470 | 470 | _grouplistcount = 2 # One list of manifests and one list of files |
|
471 | 471 | |
|
472 | 472 | def _deltaheader(self, headertuple, prevnode): |
|
473 | 473 | node, p1, p2, deltabase, cs, flags = headertuple |
|
474 | 474 | return node, p1, p2, deltabase, cs, flags |
|
475 | 475 | |
|
476 | 476 | def _unpackmanifests(self, repo, revmap, trp, prog, numchanges): |
|
477 | 477 | super(cg3unpacker, self)._unpackmanifests(repo, revmap, trp, prog, |
|
478 | 478 | numchanges) |
|
479 | 479 | for chunkdata in iter(self.filelogheader, {}): |
|
480 | 480 | # If we get here, there are directory manifests in the changegroup |
|
481 | 481 | d = chunkdata["filename"] |
|
482 | 482 | repo.ui.debug("adding %s revisions\n" % d) |
|
483 | 483 | dirlog = repo.manifest.dirlog(d) |
|
484 | 484 | if not dirlog.addgroup(self, revmap, trp): |
|
485 | 485 | raise error.Abort(_("received dir revlog group is empty")) |
|
486 | 486 | |
|
487 | 487 | class headerlessfixup(object): |
|
488 | 488 | def __init__(self, fh, h): |
|
489 | 489 | self._h = h |
|
490 | 490 | self._fh = fh |
|
491 | 491 | def read(self, n): |
|
492 | 492 | if self._h: |
|
493 | 493 | d, self._h = self._h[:n], self._h[n:] |
|
494 | 494 | if len(d) < n: |
|
495 | 495 | d += readexactly(self._fh, n - len(d)) |
|
496 | 496 | return d |
|
497 | 497 | return readexactly(self._fh, n) |
|
498 | 498 | |
|
499 | 499 | class cg1packer(object): |
|
500 | 500 | deltaheader = _CHANGEGROUPV1_DELTA_HEADER |
|
501 | 501 | version = '01' |
|
502 | 502 | def __init__(self, repo, bundlecaps=None): |
|
503 | 503 | """Given a source repo, construct a bundler. |
|
504 | 504 | |
|
505 | 505 | bundlecaps is optional and can be used to specify the set of |
|
506 | 506 | capabilities which can be used to build the bundle. |
|
507 | 507 | """ |
|
508 | 508 | # Set of capabilities we can use to build the bundle. |
|
509 | 509 | if bundlecaps is None: |
|
510 | 510 | bundlecaps = set() |
|
511 | 511 | self._bundlecaps = bundlecaps |
|
512 | 512 | # experimental config: bundle.reorder |
|
513 | 513 | reorder = repo.ui.config('bundle', 'reorder', 'auto') |
|
514 | 514 | if reorder == 'auto': |
|
515 | 515 | reorder = None |
|
516 | 516 | else: |
|
517 | 517 | reorder = util.parsebool(reorder) |
|
518 | 518 | self._repo = repo |
|
519 | 519 | self._reorder = reorder |
|
520 | 520 | self._progress = repo.ui.progress |
|
521 | 521 | if self._repo.ui.verbose and not self._repo.ui.debugflag: |
|
522 | 522 | self._verbosenote = self._repo.ui.note |
|
523 | 523 | else: |
|
524 | 524 | self._verbosenote = lambda s: None |
|
525 | 525 | |
|
526 | 526 | def close(self): |
|
527 | 527 | return closechunk() |
|
528 | 528 | |
|
529 | 529 | def fileheader(self, fname): |
|
530 | 530 | return chunkheader(len(fname)) + fname |
|
531 | 531 | |
|
532 | 532 | # Extracted both for clarity and for overriding in extensions. |
|
533 | 533 | def _sortgroup(self, revlog, nodelist, lookup): |
|
534 | 534 | """Sort nodes for change group and turn them into revnums.""" |
|
535 | 535 | # for generaldelta revlogs, we linearize the revs; this will both be |
|
536 | 536 | # much quicker and generate a much smaller bundle |
|
537 | 537 | if (revlog._generaldelta and self._reorder is None) or self._reorder: |
|
538 | 538 | dag = dagutil.revlogdag(revlog) |
|
539 | 539 | return dag.linearize(set(revlog.rev(n) for n in nodelist)) |
|
540 | 540 | else: |
|
541 | 541 | return sorted([revlog.rev(n) for n in nodelist]) |
|
542 | 542 | |
|
543 | 543 | def group(self, nodelist, revlog, lookup, units=None): |
|
544 | 544 | """Calculate a delta group, yielding a sequence of changegroup chunks |
|
545 | 545 | (strings). |
|
546 | 546 | |
|
547 | 547 | Given a list of changeset revs, return a set of deltas and |
|
548 | 548 | metadata corresponding to nodes. The first delta is |
|
549 | 549 | first parent(nodelist[0]) -> nodelist[0], the receiver is |
|
550 | 550 | guaranteed to have this parent as it has all history before |
|
551 | 551 | these changesets. In the case firstparent is nullrev the |
|
552 | 552 | changegroup starts with a full revision. |
|
553 | 553 | |
|
554 | 554 | If units is not None, progress detail will be generated, units specifies |
|
555 | 555 | the type of revlog that is touched (changelog, manifest, etc.). |
|
556 | 556 | """ |
|
557 | 557 | # if we don't have any revisions touched by these changesets, bail |
|
558 | 558 | if len(nodelist) == 0: |
|
559 | 559 | yield self.close() |
|
560 | 560 | return |
|
561 | 561 | |
|
562 | 562 | revs = self._sortgroup(revlog, nodelist, lookup) |
|
563 | 563 | |
|
564 | 564 | # add the parent of the first rev |
|
565 | 565 | p = revlog.parentrevs(revs[0])[0] |
|
566 | 566 | revs.insert(0, p) |
|
567 | 567 | |
|
568 | 568 | # build deltas |
|
569 | 569 | total = len(revs) - 1 |
|
570 | 570 | msgbundling = _('bundling') |
|
571 | 571 | for r in xrange(len(revs) - 1): |
|
572 | 572 | if units is not None: |
|
573 | 573 | self._progress(msgbundling, r + 1, unit=units, total=total) |
|
574 | 574 | prev, curr = revs[r], revs[r + 1] |
|
575 | 575 | linknode = lookup(revlog.node(curr)) |
|
576 | 576 | for c in self.revchunk(revlog, curr, prev, linknode): |
|
577 | 577 | yield c |
|
578 | 578 | |
|
579 | 579 | if units is not None: |
|
580 | 580 | self._progress(msgbundling, None) |
|
581 | 581 | yield self.close() |
|
582 | 582 | |
|
583 | 583 | # filter any nodes that claim to be part of the known set |
|
584 | 584 | def prune(self, revlog, missing, commonrevs): |
|
585 | 585 | rr, rl = revlog.rev, revlog.linkrev |
|
586 | 586 | return [n for n in missing if rl(rr(n)) not in commonrevs] |
|
587 | 587 | |
|
588 | 588 | def _packmanifests(self, dir, mfnodes, lookuplinknode): |
|
589 | 589 | """Pack flat manifests into a changegroup stream.""" |
|
590 | 590 | assert not dir |
|
591 | 591 | for chunk in self.group(mfnodes, self._repo.manifest, |
|
592 | 592 | lookuplinknode, units=_('manifests')): |
|
593 | 593 | yield chunk |
|
594 | 594 | |
|
595 | 595 | def _manifestsdone(self): |
|
596 | 596 | return '' |
|
597 | 597 | |
|
598 | 598 | def generate(self, commonrevs, clnodes, fastpathlinkrev, source): |
|
599 | 599 | '''yield a sequence of changegroup chunks (strings)''' |
|
600 | 600 | repo = self._repo |
|
601 | 601 | cl = repo.changelog |
|
602 | 602 | |
|
603 | 603 | clrevorder = {} |
|
604 | 604 | mfs = {} # needed manifests |
|
605 | 605 | fnodes = {} # needed file nodes |
|
606 | 606 | changedfiles = set() |
|
607 | 607 | |
|
608 | 608 | # Callback for the changelog, used to collect changed files and manifest |
|
609 | 609 | # nodes. |
|
610 | 610 | # Returns the linkrev node (identity in the changelog case). |
|
611 | 611 | def lookupcl(x): |
|
612 | 612 | c = cl.read(x) |
|
613 | 613 | clrevorder[x] = len(clrevorder) |
|
614 | 614 | n = c[0] |
|
615 | 615 | # record the first changeset introducing this manifest version |
|
616 | 616 | mfs.setdefault(n, x) |
|
617 | 617 | # Record a complete list of potentially-changed files in |
|
618 | 618 | # this manifest. |
|
619 | 619 | changedfiles.update(c[3]) |
|
620 | 620 | return x |
|
621 | 621 | |
|
622 | 622 | self._verbosenote(_('uncompressed size of bundle content:\n')) |
|
623 | 623 | size = 0 |
|
624 | 624 | for chunk in self.group(clnodes, cl, lookupcl, units=_('changesets')): |
|
625 | 625 | size += len(chunk) |
|
626 | 626 | yield chunk |
|
627 | 627 | self._verbosenote(_('%8.i (changelog)\n') % size) |
|
628 | 628 | |
|
629 | 629 | # We need to make sure that the linkrev in the changegroup refers to |
|
630 | 630 | # the first changeset that introduced the manifest or file revision. |
|
631 | 631 | # The fastpath is usually safer than the slowpath, because the filelogs |
|
632 | 632 | # are walked in revlog order. |
|
633 | 633 | # |
|
634 | 634 | # When taking the slowpath with reorder=None and the manifest revlog |
|
635 | 635 | # uses generaldelta, the manifest may be walked in the "wrong" order. |
|
636 | 636 | # Without 'clrevorder', we would get an incorrect linkrev (see fix in |
|
637 | 637 | # cc0ff93d0c0c). |
|
638 | 638 | # |
|
639 | 639 | # When taking the fastpath, we are only vulnerable to reordering |
|
640 | 640 | # of the changelog itself. The changelog never uses generaldelta, so |
|
641 | 641 | # it is only reordered when reorder=True. To handle this case, we |
|
642 | 642 | # simply take the slowpath, which already has the 'clrevorder' logic. |
|
643 | 643 | # This was also fixed in cc0ff93d0c0c. |
|
644 | 644 | fastpathlinkrev = fastpathlinkrev and not self._reorder |
|
645 | 645 | # Treemanifests don't work correctly with fastpathlinkrev |
|
646 | 646 | # either, because we don't discover which directory nodes to |
|
647 | 647 | # send along with files. This could probably be fixed. |
|
648 | 648 | fastpathlinkrev = fastpathlinkrev and ( |
|
649 | 649 | 'treemanifest' not in repo.requirements) |
|
650 | 650 | |
|
651 | 651 | for chunk in self.generatemanifests(commonrevs, clrevorder, |
|
652 | 652 | fastpathlinkrev, mfs, fnodes): |
|
653 | 653 | yield chunk |
|
654 | 654 | mfs.clear() |
|
655 | 655 | clrevs = set(cl.rev(x) for x in clnodes) |
|
656 | 656 | |
|
657 | 657 | if not fastpathlinkrev: |
|
658 | 658 | def linknodes(unused, fname): |
|
659 | 659 | return fnodes.get(fname, {}) |
|
660 | 660 | else: |
|
661 | 661 | cln = cl.node |
|
662 | 662 | def linknodes(filerevlog, fname): |
|
663 | 663 | llr = filerevlog.linkrev |
|
664 | 664 | fln = filerevlog.node |
|
665 | 665 | revs = ((r, llr(r)) for r in filerevlog) |
|
666 | 666 | return dict((fln(r), cln(lr)) for r, lr in revs if lr in clrevs) |
|
667 | 667 | |
|
668 | 668 | for chunk in self.generatefiles(changedfiles, linknodes, commonrevs, |
|
669 | 669 | source): |
|
670 | 670 | yield chunk |
|
671 | 671 | |
|
672 | 672 | yield self.close() |
|
673 | 673 | |
|
674 | 674 | if clnodes: |
|
675 | 675 | repo.hook('outgoing', node=hex(clnodes[0]), source=source) |
|
676 | 676 | |
|
677 | 677 | def generatemanifests(self, commonrevs, clrevorder, fastpathlinkrev, mfs, |
|
678 | 678 | fnodes): |
|
679 | 679 | repo = self._repo |
|
680 | 680 | dirlog = repo.manifest.dirlog |
|
681 | 681 | tmfnodes = {'': mfs} |
|
682 | 682 | |
|
683 | 683 | # Callback for the manifest, used to collect linkrevs for filelog |
|
684 | 684 | # revisions. |
|
685 | 685 | # Returns the linkrev node (collected in lookupcl). |
|
686 | 686 | def makelookupmflinknode(dir): |
|
687 | 687 | if fastpathlinkrev: |
|
688 | 688 | assert not dir |
|
689 | 689 | return mfs.__getitem__ |
|
690 | 690 | |
|
691 | 691 | def lookupmflinknode(x): |
|
692 | 692 | """Callback for looking up the linknode for manifests. |
|
693 | 693 | |
|
694 | 694 | Returns the linkrev node for the specified manifest. |
|
695 | 695 | |
|
696 | 696 | SIDE EFFECT: |
|
697 | 697 | |
|
698 | 698 | 1) fclnodes gets populated with the list of relevant |
|
699 | 699 | file nodes if we're not using fastpathlinkrev |
|
700 | 700 | 2) When treemanifests are in use, collects treemanifest nodes |
|
701 | 701 | to send |
|
702 | 702 | |
|
703 | 703 | Note that this means manifests must be completely sent to |
|
704 | 704 | the client before you can trust the list of files and |
|
705 | 705 | treemanifests to send. |
|
706 | 706 | """ |
|
707 | 707 | clnode = tmfnodes[dir][x] |
|
708 | 708 | mdata = dirlog(dir).readshallowfast(x) |
|
709 | 709 | for p, n, fl in mdata.iterentries(): |
|
710 | 710 | if fl == 't': # subdirectory manifest |
|
711 | 711 | subdir = dir + p + '/' |
|
712 | 712 | tmfclnodes = tmfnodes.setdefault(subdir, {}) |
|
713 | 713 | tmfclnode = tmfclnodes.setdefault(n, clnode) |
|
714 | 714 | if clrevorder[clnode] < clrevorder[tmfclnode]: |
|
715 | 715 | tmfclnodes[n] = clnode |
|
716 | 716 | else: |
|
717 | 717 | f = dir + p |
|
718 | 718 | fclnodes = fnodes.setdefault(f, {}) |
|
719 | 719 | fclnode = fclnodes.setdefault(n, clnode) |
|
720 | 720 | if clrevorder[clnode] < clrevorder[fclnode]: |
|
721 | 721 | fclnodes[n] = clnode |
|
722 | 722 | return clnode |
|
723 | 723 | return lookupmflinknode |
|
724 | 724 | |
|
725 | 725 | size = 0 |
|
726 | 726 | while tmfnodes: |
|
727 | 727 | dir = min(tmfnodes) |
|
728 | 728 | nodes = tmfnodes[dir] |
|
729 | 729 | prunednodes = self.prune(dirlog(dir), nodes, commonrevs) |
|
730 | 730 | if not dir or prunednodes: |
|
731 | 731 | for x in self._packmanifests(dir, prunednodes, |
|
732 | 732 | makelookupmflinknode(dir)): |
|
733 | 733 | size += len(x) |
|
734 | 734 | yield x |
|
735 | 735 | del tmfnodes[dir] |
|
736 | 736 | self._verbosenote(_('%8.i (manifests)\n') % size) |
|
737 | 737 | yield self._manifestsdone() |
|
738 | 738 | |
|
739 | 739 | # The 'source' parameter is useful for extensions |
|
740 | 740 | def generatefiles(self, changedfiles, linknodes, commonrevs, source): |
|
741 | 741 | repo = self._repo |
|
742 | 742 | progress = self._progress |
|
743 | 743 | msgbundling = _('bundling') |
|
744 | 744 | |
|
745 | 745 | total = len(changedfiles) |
|
746 | 746 | # for progress output |
|
747 | 747 | msgfiles = _('files') |
|
748 | 748 | for i, fname in enumerate(sorted(changedfiles)): |
|
749 | 749 | filerevlog = repo.file(fname) |
|
750 | 750 | if not filerevlog: |
|
751 | 751 | raise error.Abort(_("empty or missing revlog for %s") % fname) |
|
752 | 752 | |
|
753 | 753 | linkrevnodes = linknodes(filerevlog, fname) |
|
754 | 754 | # Lookup for filenodes, we collected the linkrev nodes above in the |
|
755 | 755 | # fastpath case and with lookupmf in the slowpath case. |
|
756 | 756 | def lookupfilelog(x): |
|
757 | 757 | return linkrevnodes[x] |
|
758 | 758 | |
|
759 | 759 | filenodes = self.prune(filerevlog, linkrevnodes, commonrevs) |
|
760 | 760 | if filenodes: |
|
761 | 761 | progress(msgbundling, i + 1, item=fname, unit=msgfiles, |
|
762 | 762 | total=total) |
|
763 | 763 | h = self.fileheader(fname) |
|
764 | 764 | size = len(h) |
|
765 | 765 | yield h |
|
766 | 766 | for chunk in self.group(filenodes, filerevlog, lookupfilelog): |
|
767 | 767 | size += len(chunk) |
|
768 | 768 | yield chunk |
|
769 | 769 | self._verbosenote(_('%8.i %s\n') % (size, fname)) |
|
770 | 770 | progress(msgbundling, None) |
|
771 | 771 | |
|
772 | 772 | def deltaparent(self, revlog, rev, p1, p2, prev): |
|
773 | 773 | return prev |
|
774 | 774 | |
|
775 | 775 | def revchunk(self, revlog, rev, prev, linknode): |
|
776 | 776 | node = revlog.node(rev) |
|
777 | 777 | p1, p2 = revlog.parentrevs(rev) |
|
778 | 778 | base = self.deltaparent(revlog, rev, p1, p2, prev) |
|
779 | 779 | |
|
780 | 780 | prefix = '' |
|
781 | 781 | if revlog.iscensored(base) or revlog.iscensored(rev): |
|
782 | 782 | try: |
|
783 | 783 | delta = revlog.revision(node) |
|
784 | 784 | except error.CensoredNodeError as e: |
|
785 | 785 | delta = e.tombstone |
|
786 | 786 | if base == nullrev: |
|
787 | 787 | prefix = mdiff.trivialdiffheader(len(delta)) |
|
788 | 788 | else: |
|
789 | 789 | baselen = revlog.rawsize(base) |
|
790 | 790 | prefix = mdiff.replacediffheader(baselen, len(delta)) |
|
791 | 791 | elif base == nullrev: |
|
792 | 792 | delta = revlog.revision(node) |
|
793 | 793 | prefix = mdiff.trivialdiffheader(len(delta)) |
|
794 | 794 | else: |
|
795 | 795 | delta = revlog.revdiff(base, rev) |
|
796 | 796 | p1n, p2n = revlog.parents(node) |
|
797 | 797 | basenode = revlog.node(base) |
|
798 | 798 | flags = revlog.flags(rev) |
|
799 | 799 | meta = self.builddeltaheader(node, p1n, p2n, basenode, linknode, flags) |
|
800 | 800 | meta += prefix |
|
801 | 801 | l = len(meta) + len(delta) |
|
802 | 802 | yield chunkheader(l) |
|
803 | 803 | yield meta |
|
804 | 804 | yield delta |
|
805 | 805 | def builddeltaheader(self, node, p1n, p2n, basenode, linknode, flags): |
|
806 | 806 | # do nothing with basenode, it is implicitly the previous one in HG10 |
|
807 | 807 | # do nothing with flags, it is implicitly 0 for cg1 and cg2 |
|
808 | 808 | return struct.pack(self.deltaheader, node, p1n, p2n, linknode) |
|
809 | 809 | |
|
810 | 810 | class cg2packer(cg1packer): |
|
811 | 811 | version = '02' |
|
812 | 812 | deltaheader = _CHANGEGROUPV2_DELTA_HEADER |
|
813 | 813 | |
|
814 | 814 | def __init__(self, repo, bundlecaps=None): |
|
815 | 815 | super(cg2packer, self).__init__(repo, bundlecaps) |
|
816 | 816 | if self._reorder is None: |
|
817 | 817 | # Since generaldelta is directly supported by cg2, reordering |
|
818 | 818 | # generally doesn't help, so we disable it by default (treating |
|
819 | 819 | # bundle.reorder=auto just like bundle.reorder=False). |
|
820 | 820 | self._reorder = False |
|
821 | 821 | |
|
822 | 822 | def deltaparent(self, revlog, rev, p1, p2, prev): |
|
823 | 823 | dp = revlog.deltaparent(rev) |
|
824 | 824 | if dp == nullrev and revlog.storedeltachains: |
|
825 | 825 | # Avoid sending full revisions when delta parent is null. Pick prev |
|
826 | 826 | # in that case. It's tempting to pick p1 in this case, as p1 will |
|
827 | 827 | # be smaller in the common case. However, computing a delta against |
|
828 | 828 | # p1 may require resolving the raw text of p1, which could be |
|
829 | 829 | # expensive. The revlog caches should have prev cached, meaning |
|
830 | 830 | # less CPU for changegroup generation. There is likely room to add |
|
831 | 831 | # a flag and/or config option to control this behavior. |
|
832 | 832 | return prev |
|
833 | 833 | elif dp == nullrev: |
|
834 | 834 | # revlog is configured to use full snapshot for a reason, |
|
835 | 835 | # stick to full snapshot. |
|
836 | 836 | return nullrev |
|
837 | 837 | elif dp not in (p1, p2, prev): |
|
838 | 838 | # Pick prev when we can't be sure remote has the base revision. |
|
839 | 839 | return prev |
|
840 | 840 | else: |
|
841 | 841 | return dp |
|
842 | 842 | |
|
843 | 843 | def builddeltaheader(self, node, p1n, p2n, basenode, linknode, flags): |
|
844 | 844 | # Do nothing with flags, it is implicitly 0 in cg1 and cg2 |
|
845 | 845 | return struct.pack(self.deltaheader, node, p1n, p2n, basenode, linknode) |
|
846 | 846 | |
|
847 | 847 | class cg3packer(cg2packer): |
|
848 | 848 | version = '03' |
|
849 | 849 | deltaheader = _CHANGEGROUPV3_DELTA_HEADER |
|
850 | 850 | |
|
851 | 851 | def _packmanifests(self, dir, mfnodes, lookuplinknode): |
|
852 | 852 | if dir: |
|
853 | 853 | yield self.fileheader(dir) |
|
854 | 854 | for chunk in self.group(mfnodes, self._repo.manifest.dirlog(dir), |
|
855 | 855 | lookuplinknode, units=_('manifests')): |
|
856 | 856 | yield chunk |
|
857 | 857 | |
|
858 | 858 | def _manifestsdone(self): |
|
859 | 859 | return self.close() |
|
860 | 860 | |
|
861 | 861 | def builddeltaheader(self, node, p1n, p2n, basenode, linknode, flags): |
|
862 | 862 | return struct.pack( |
|
863 | 863 | self.deltaheader, node, p1n, p2n, basenode, linknode, flags) |
|
864 | 864 | |
|
865 | 865 | _packermap = {'01': (cg1packer, cg1unpacker), |
|
866 | 866 | # cg2 adds support for exchanging generaldelta |
|
867 | 867 | '02': (cg2packer, cg2unpacker), |
|
868 | 868 | # cg3 adds support for exchanging revlog flags and treemanifests |
|
869 | 869 | '03': (cg3packer, cg3unpacker), |
|
870 | 870 | } |
|
871 | 871 | |
|
872 | 872 | def allsupportedversions(ui): |
|
873 | 873 | versions = set(_packermap.keys()) |
|
874 | 874 | versions.discard('03') |
|
875 | 875 | if (ui.configbool('experimental', 'changegroup3') or |
|
876 | 876 | ui.configbool('experimental', 'treemanifest')): |
|
877 | 877 | versions.add('03') |
|
878 | 878 | return versions |
|
879 | 879 | |
|
880 | 880 | # Changegroup versions that can be applied to the repo |
|
881 | 881 | def supportedincomingversions(repo): |
|
882 | 882 | versions = allsupportedversions(repo.ui) |
|
883 | 883 | if 'treemanifest' in repo.requirements: |
|
884 | 884 | versions.add('03') |
|
885 | 885 | return versions |
|
886 | 886 | |
|
887 | 887 | # Changegroup versions that can be created from the repo |
|
888 | 888 | def supportedoutgoingversions(repo): |
|
889 | 889 | versions = allsupportedversions(repo.ui) |
|
890 | 890 | if 'treemanifest' in repo.requirements: |
|
891 | 891 | # Versions 01 and 02 support only flat manifests and it's just too |
|
892 | 892 | # expensive to convert between the flat manifest and tree manifest on |
|
893 | 893 | # the fly. Since tree manifests are hashed differently, all of history |
|
894 | 894 | # would have to be converted. Instead, we simply don't even pretend to |
|
895 | 895 | # support versions 01 and 02. |
|
896 | 896 | versions.discard('01') |
|
897 | 897 | versions.discard('02') |
|
898 | 898 | versions.add('03') |
|
899 | 899 | return versions |
|
900 | 900 | |
|
901 | 901 | def safeversion(repo): |
|
902 | 902 | # Finds the smallest version that it's safe to assume clients of the repo |
|
903 | 903 | # will support. For example, all hg versions that support generaldelta also |
|
904 | 904 | # support changegroup 02. |
|
905 | 905 | versions = supportedoutgoingversions(repo) |
|
906 | 906 | if 'generaldelta' in repo.requirements: |
|
907 | 907 | versions.discard('01') |
|
908 | 908 | assert versions |
|
909 | 909 | return min(versions) |
|
910 | 910 | |
|
911 | 911 | def getbundler(version, repo, bundlecaps=None): |
|
912 | 912 | assert version in supportedoutgoingversions(repo) |
|
913 | 913 | return _packermap[version][0](repo, bundlecaps) |
|
914 | 914 | |
|
915 | 915 | def getunbundler(version, fh, alg, extras=None): |
|
916 | 916 | return _packermap[version][1](fh, alg, extras=extras) |
|
917 | 917 | |
|
918 | 918 | def _changegroupinfo(repo, nodes, source): |
|
919 | 919 | if repo.ui.verbose or source == 'bundle': |
|
920 | 920 | repo.ui.status(_("%d changesets found\n") % len(nodes)) |
|
921 | 921 | if repo.ui.debugflag: |
|
922 | 922 | repo.ui.debug("list of changesets:\n") |
|
923 | 923 | for node in nodes: |
|
924 | 924 | repo.ui.debug("%s\n" % hex(node)) |
|
925 | 925 | |
|
926 | 926 | def getsubsetraw(repo, outgoing, bundler, source, fastpath=False): |
|
927 | 927 | repo = repo.unfiltered() |
|
928 | 928 | commonrevs = outgoing.common |
|
929 | 929 | csets = outgoing.missing |
|
930 | 930 | heads = outgoing.missingheads |
|
931 | 931 | # We go through the fast path if we get told to, or if all (unfiltered |
|
932 | 932 | # heads have been requested (since we then know there all linkrevs will |
|
933 | 933 | # be pulled by the client). |
|
934 | 934 | heads.sort() |
|
935 | 935 | fastpathlinkrev = fastpath or ( |
|
936 | 936 | repo.filtername is None and heads == sorted(repo.heads())) |
|
937 | 937 | |
|
938 | 938 | repo.hook('preoutgoing', throw=True, source=source) |
|
939 | 939 | _changegroupinfo(repo, csets, source) |
|
940 | 940 | return bundler.generate(commonrevs, csets, fastpathlinkrev, source) |
|
941 | 941 | |
|
942 | 942 | def getsubset(repo, outgoing, bundler, source, fastpath=False): |
|
943 | 943 | gengroup = getsubsetraw(repo, outgoing, bundler, source, fastpath) |
|
944 | 944 | return getunbundler(bundler.version, util.chunkbuffer(gengroup), None, |
|
945 | 945 | {'clcount': len(outgoing.missing)}) |
|
946 | 946 | |
|
947 | 947 | def changegroupsubset(repo, roots, heads, source, version='01'): |
|
948 | 948 | """Compute a changegroup consisting of all the nodes that are |
|
949 | 949 | descendants of any of the roots and ancestors of any of the heads. |
|
950 | 950 | Return a chunkbuffer object whose read() method will return |
|
951 | 951 | successive changegroup chunks. |
|
952 | 952 | |
|
953 | 953 | It is fairly complex as determining which filenodes and which |
|
954 | 954 | manifest nodes need to be included for the changeset to be complete |
|
955 | 955 | is non-trivial. |
|
956 | 956 | |
|
957 | 957 | Another wrinkle is doing the reverse, figuring out which changeset in |
|
958 | 958 | the changegroup a particular filenode or manifestnode belongs to. |
|
959 | 959 | """ |
|
960 | 960 | outgoing = discovery.outgoing(repo, missingroots=roots, missingheads=heads) |
|
961 | 961 | bundler = getbundler(version, repo) |
|
962 | 962 | return getsubset(repo, outgoing, bundler, source) |
|
963 | 963 | |
|
964 | 964 | def getlocalchangegroupraw(repo, source, outgoing, bundlecaps=None, |
|
965 | 965 | version='01'): |
|
966 | 966 | """Like getbundle, but taking a discovery.outgoing as an argument. |
|
967 | 967 | |
|
968 | 968 | This is only implemented for local repos and reuses potentially |
|
969 | 969 | precomputed sets in outgoing. Returns a raw changegroup generator.""" |
|
970 | 970 | if not outgoing.missing: |
|
971 | 971 | return None |
|
972 | 972 | bundler = getbundler(version, repo, bundlecaps) |
|
973 | 973 | return getsubsetraw(repo, outgoing, bundler, source) |
|
974 | 974 | |
|
975 | 975 | def getlocalchangegroup(repo, source, outgoing, bundlecaps=None, |
|
976 | 976 | version='01'): |
|
977 | 977 | """Like getbundle, but taking a discovery.outgoing as an argument. |
|
978 | 978 | |
|
979 | 979 | This is only implemented for local repos and reuses potentially |
|
980 | 980 | precomputed sets in outgoing.""" |
|
981 | 981 | if not outgoing.missing: |
|
982 | 982 | return None |
|
983 | 983 | bundler = getbundler(version, repo, bundlecaps) |
|
984 | 984 | return getsubset(repo, outgoing, bundler, source) |
|
985 | 985 | |
|
986 | 986 | def getchangegroup(repo, source, outgoing, bundlecaps=None, |
|
987 | 987 | version='01'): |
|
988 | 988 | """Like changegroupsubset, but returns the set difference between the |
|
989 | 989 | ancestors of heads and the ancestors common. |
|
990 | 990 | |
|
991 | 991 | If heads is None, use the local heads. If common is None, use [nullid]. |
|
992 | 992 | |
|
993 | 993 | The nodes in common might not all be known locally due to the way the |
|
994 | 994 | current discovery protocol works. |
|
995 | 995 | """ |
|
996 | 996 | return getlocalchangegroup(repo, source, outgoing, bundlecaps=bundlecaps, |
|
997 | 997 | version=version) |
|
998 | 998 | |
|
999 | 999 | def changegroup(repo, basenodes, source): |
|
1000 | 1000 | # to avoid a race we use changegroupsubset() (issue1320) |
|
1001 | 1001 | return changegroupsubset(repo, basenodes, repo.heads(), source) |
|
1002 | 1002 | |
|
1003 | 1003 | def _addchangegroupfiles(repo, source, revmap, trp, expectedfiles, needfiles): |
|
1004 | 1004 | revisions = 0 |
|
1005 | 1005 | files = 0 |
|
1006 | 1006 | for chunkdata in iter(source.filelogheader, {}): |
|
1007 | 1007 | files += 1 |
|
1008 | 1008 | f = chunkdata["filename"] |
|
1009 | 1009 | repo.ui.debug("adding %s revisions\n" % f) |
|
1010 | 1010 | repo.ui.progress(_('files'), files, unit=_('files'), |
|
1011 | 1011 | total=expectedfiles) |
|
1012 | 1012 | fl = repo.file(f) |
|
1013 | 1013 | o = len(fl) |
|
1014 | 1014 | try: |
|
1015 | 1015 | if not fl.addgroup(source, revmap, trp): |
|
1016 | 1016 | raise error.Abort(_("received file revlog group is empty")) |
|
1017 | 1017 | except error.CensoredBaseError as e: |
|
1018 | 1018 | raise error.Abort(_("received delta base is censored: %s") % e) |
|
1019 | 1019 | revisions += len(fl) - o |
|
1020 | 1020 | if f in needfiles: |
|
1021 | 1021 | needs = needfiles[f] |
|
1022 | 1022 | for new in xrange(o, len(fl)): |
|
1023 | 1023 | n = fl.node(new) |
|
1024 | 1024 | if n in needs: |
|
1025 | 1025 | needs.remove(n) |
|
1026 | 1026 | else: |
|
1027 | 1027 | raise error.Abort( |
|
1028 | 1028 | _("received spurious file revlog entry")) |
|
1029 | 1029 | if not needs: |
|
1030 | 1030 | del needfiles[f] |
|
1031 | 1031 | repo.ui.progress(_('files'), None) |
|
1032 | 1032 | |
|
1033 | 1033 | for f, needs in needfiles.iteritems(): |
|
1034 | 1034 | fl = repo.file(f) |
|
1035 | 1035 | for n in needs: |
|
1036 | 1036 | try: |
|
1037 | 1037 | fl.rev(n) |
|
1038 | 1038 | except error.LookupError: |
|
1039 | 1039 | raise error.Abort( |
|
1040 | 1040 | _('missing file data for %s:%s - run hg verify') % |
|
1041 | 1041 | (f, hex(n))) |
|
1042 | 1042 | |
|
1043 | 1043 | return revisions, files |
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