Mercurial > hg
annotate mercurial/changegroup.py @ 26286:4b685712fa45
bookmark: do not crash when active bookmark is forward and --date is used
The logic that decides where to update according to the active bookmark
location (when not on ".") was setting the rev to update to before we process
--date. This lead to --date processing aborting because of duplicated
specification.
We reorder the two pieces of code and add a test for this.
author | Pierre-Yves David <pierre-yves.david@fb.com> |
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date | Thu, 17 Sep 2015 16:08:10 -0700 |
parents | 59c410db8c68 |
children | 127b59787fd5 |
rev | line source |
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1 # changegroup.py - Mercurial changegroup manipulation functions |
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2 # |
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3 # Copyright 2006 Matt Mackall <mpm@selenic.com> |
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4 # |
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5 # This software may be used and distributed according to the terms of the |
10263 | 6 # GNU General Public License version 2 or any later version. |
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7 |
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8 from __future__ import absolute_import |
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9 |
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10 import os |
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11 import struct |
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12 import tempfile |
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13 import weakref |
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14 |
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15 from .i18n import _ |
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16 from .node import ( |
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17 hex, |
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18 nullid, |
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19 nullrev, |
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20 short, |
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21 ) |
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22 |
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23 from . import ( |
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24 branchmap, |
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25 dagutil, |
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26 discovery, |
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27 error, |
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28 mdiff, |
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29 phases, |
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30 util, |
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31 ) |
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32 |
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33 _CHANGEGROUPV1_DELTA_HEADER = "20s20s20s20s" |
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34 _CHANGEGROUPV2_DELTA_HEADER = "20s20s20s20s20s" |
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35 |
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36 def readexactly(stream, n): |
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37 '''read n bytes from stream.read and abort if less was available''' |
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38 s = stream.read(n) |
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39 if len(s) < n: |
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40 raise util.Abort(_("stream ended unexpectedly" |
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41 " (got %d bytes, expected %d)") |
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42 % (len(s), n)) |
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43 return s |
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44 |
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45 def getchunk(stream): |
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46 """return the next chunk from stream as a string""" |
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47 d = readexactly(stream, 4) |
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48 l = struct.unpack(">l", d)[0] |
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49 if l <= 4: |
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50 if l: |
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51 raise util.Abort(_("invalid chunk length %d") % l) |
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52 return "" |
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53 return readexactly(stream, l - 4) |
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54 |
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55 def chunkheader(length): |
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56 """return a changegroup chunk header (string)""" |
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57 return struct.pack(">l", length + 4) |
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58 |
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59 def closechunk(): |
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60 """return a changegroup chunk header (string) for a zero-length chunk""" |
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61 return struct.pack(">l", 0) |
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62 |
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63 def combineresults(results): |
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64 """logic to combine 0 or more addchangegroup results into one""" |
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65 changedheads = 0 |
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66 result = 1 |
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67 for ret in results: |
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68 # If any changegroup result is 0, return 0 |
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69 if ret == 0: |
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70 result = 0 |
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71 break |
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72 if ret < -1: |
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73 changedheads += ret + 1 |
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74 elif ret > 1: |
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75 changedheads += ret - 1 |
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76 if changedheads > 0: |
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77 result = 1 + changedheads |
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78 elif changedheads < 0: |
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79 result = -1 + changedheads |
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80 return result |
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81 |
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82 bundletypes = { |
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83 "": ("", None), # only when using unbundle on ssh and old http servers |
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84 # since the unification ssh accepts a header but there |
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85 # is no capability signaling it. |
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86 "HG20": (), # special-cased below |
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87 "HG10UN": ("HG10UN", None), |
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88 "HG10BZ": ("HG10", 'BZ'), |
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89 "HG10GZ": ("HG10GZ", 'GZ'), |
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90 } |
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91 |
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93 bundlepriority = ['HG10GZ', 'HG10BZ', 'HG10UN'] |
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94 |
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95 def writebundle(ui, cg, filename, bundletype, vfs=None): |
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96 """Write a bundle file and return its filename. |
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97 |
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98 Existing files will not be overwritten. |
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99 If no filename is specified, a temporary file is created. |
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100 bz2 compression can be turned off. |
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101 The bundle file will be deleted in case of errors. |
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102 """ |
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103 |
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104 fh = None |
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105 cleanup = None |
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106 try: |
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107 if filename: |
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108 if vfs: |
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109 fh = vfs.open(filename, "wb") |
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110 else: |
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111 fh = open(filename, "wb") |
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112 else: |
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113 fd, filename = tempfile.mkstemp(prefix="hg-bundle-", suffix=".hg") |
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114 fh = os.fdopen(fd, "wb") |
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115 cleanup = filename |
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116 |
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117 if bundletype == "HG20": |
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118 from . import bundle2 |
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119 bundle = bundle2.bundle20(ui) |
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120 part = bundle.newpart('changegroup', data=cg.getchunks()) |
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121 part.addparam('version', cg.version) |
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122 z = util.compressors[None]() |
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123 chunkiter = bundle.getchunks() |
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124 else: |
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125 if cg.version != '01': |
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126 raise util.Abort(_('old bundle types only supports v1 ' |
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127 'changegroups')) |
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128 header, comp = bundletypes[bundletype] |
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129 fh.write(header) |
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130 if comp not in util.compressors: |
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131 raise util.Abort(_('unknown stream compression type: %s') |
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132 % comp) |
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133 z = util.compressors[comp]() |
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134 chunkiter = cg.getchunks() |
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135 |
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136 # parse the changegroup data, otherwise we will block |
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137 # in case of sshrepo because we don't know the end of the stream |
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138 |
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139 # an empty chunkgroup is the end of the changegroup |
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140 # a changegroup has at least 2 chunkgroups (changelog and manifest). |
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141 # after that, an empty chunkgroup is the end of the changegroup |
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142 for chunk in chunkiter: |
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143 fh.write(z.compress(chunk)) |
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144 fh.write(z.flush()) |
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145 cleanup = None |
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146 return filename |
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147 finally: |
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148 if fh is not None: |
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149 fh.close() |
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150 if cleanup is not None: |
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151 if filename and vfs: |
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152 vfs.unlink(cleanup) |
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153 else: |
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154 os.unlink(cleanup) |
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155 |
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156 class cg1unpacker(object): |
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157 deltaheader = _CHANGEGROUPV1_DELTA_HEADER |
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158 deltaheadersize = struct.calcsize(deltaheader) |
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159 version = '01' |
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160 def __init__(self, fh, alg): |
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161 if alg == 'UN': |
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162 alg = None # get more modern without breaking too much |
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163 if not alg in util.decompressors: |
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164 raise util.Abort(_('unknown stream compression type: %s') |
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165 % alg) |
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166 self._stream = util.decompressors[alg](fh) |
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167 self._type = alg |
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168 self.callback = None |
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169 def compressed(self): |
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170 return self._type is not None |
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171 def read(self, l): |
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172 return self._stream.read(l) |
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173 def seek(self, pos): |
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174 return self._stream.seek(pos) |
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175 def tell(self): |
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176 return self._stream.tell() |
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177 def close(self): |
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178 return self._stream.close() |
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179 |
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180 def chunklength(self): |
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181 d = readexactly(self._stream, 4) |
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182 l = struct.unpack(">l", d)[0] |
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183 if l <= 4: |
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184 if l: |
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185 raise util.Abort(_("invalid chunk length %d") % l) |
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186 return 0 |
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187 if self.callback: |
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188 self.callback() |
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189 return l - 4 |
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190 |
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191 def changelogheader(self): |
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192 """v10 does not have a changelog header chunk""" |
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193 return {} |
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194 |
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195 def manifestheader(self): |
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196 """v10 does not have a manifest header chunk""" |
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197 return {} |
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198 |
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199 def filelogheader(self): |
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200 """return the header of the filelogs chunk, v10 only has the filename""" |
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201 l = self.chunklength() |
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202 if not l: |
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203 return {} |
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204 fname = readexactly(self._stream, l) |
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205 return {'filename': fname} |
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206 |
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207 def _deltaheader(self, headertuple, prevnode): |
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208 node, p1, p2, cs = headertuple |
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209 if prevnode is None: |
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210 deltabase = p1 |
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211 else: |
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212 deltabase = prevnode |
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213 return node, p1, p2, deltabase, cs |
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214 |
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215 def deltachunk(self, prevnode): |
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216 l = self.chunklength() |
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217 if not l: |
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218 return {} |
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219 headerdata = readexactly(self._stream, self.deltaheadersize) |
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220 header = struct.unpack(self.deltaheader, headerdata) |
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221 delta = readexactly(self._stream, l - self.deltaheadersize) |
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222 node, p1, p2, deltabase, cs = self._deltaheader(header, prevnode) |
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223 return {'node': node, 'p1': p1, 'p2': p2, 'cs': cs, |
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224 'deltabase': deltabase, 'delta': delta} |
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225 |
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226 def getchunks(self): |
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227 """returns all the chunks contains in the bundle |
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228 |
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229 Used when you need to forward the binary stream to a file or another |
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230 network API. To do so, it parse the changegroup data, otherwise it will |
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231 block in case of sshrepo because it don't know the end of the stream. |
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232 """ |
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233 # an empty chunkgroup is the end of the changegroup |
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234 # a changegroup has at least 2 chunkgroups (changelog and manifest). |
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235 # after that, an empty chunkgroup is the end of the changegroup |
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236 empty = False |
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237 count = 0 |
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238 while not empty or count <= 2: |
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239 empty = True |
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240 count += 1 |
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241 while True: |
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242 chunk = getchunk(self) |
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243 if not chunk: |
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244 break |
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245 empty = False |
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246 yield chunkheader(len(chunk)) |
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247 pos = 0 |
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248 while pos < len(chunk): |
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249 next = pos + 2**20 |
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250 yield chunk[pos:next] |
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251 pos = next |
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252 yield closechunk() |
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253 |
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254 class cg2unpacker(cg1unpacker): |
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255 deltaheader = _CHANGEGROUPV2_DELTA_HEADER |
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256 deltaheadersize = struct.calcsize(deltaheader) |
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257 version = '02' |
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258 |
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259 def _deltaheader(self, headertuple, prevnode): |
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260 node, p1, p2, deltabase, cs = headertuple |
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261 return node, p1, p2, deltabase, cs |
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262 |
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263 class headerlessfixup(object): |
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264 def __init__(self, fh, h): |
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265 self._h = h |
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266 self._fh = fh |
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267 def read(self, n): |
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268 if self._h: |
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269 d, self._h = self._h[:n], self._h[n:] |
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270 if len(d) < n: |
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271 d += readexactly(self._fh, n - len(d)) |
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272 return d |
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273 return readexactly(self._fh, n) |
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274 |
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275 class cg1packer(object): |
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276 deltaheader = _CHANGEGROUPV1_DELTA_HEADER |
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277 version = '01' |
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278 def __init__(self, repo, bundlecaps=None): |
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279 """Given a source repo, construct a bundler. |
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280 |
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281 bundlecaps is optional and can be used to specify the set of |
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282 capabilities which can be used to build the bundle. |
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283 """ |
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284 # Set of capabilities we can use to build the bundle. |
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285 if bundlecaps is None: |
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286 bundlecaps = set() |
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287 self._bundlecaps = bundlecaps |
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288 # experimental config: bundle.reorder |
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289 reorder = repo.ui.config('bundle', 'reorder', 'auto') |
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290 if reorder == 'auto': |
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291 reorder = None |
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292 else: |
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293 reorder = util.parsebool(reorder) |
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294 self._repo = repo |
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295 self._reorder = reorder |
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296 self._progress = repo.ui.progress |
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297 if self._repo.ui.verbose and not self._repo.ui.debugflag: |
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298 self._verbosenote = self._repo.ui.note |
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299 else: |
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300 self._verbosenote = lambda s: None |
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301 |
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302 def close(self): |
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303 return closechunk() |
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304 |
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305 def fileheader(self, fname): |
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306 return chunkheader(len(fname)) + fname |
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307 |
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308 def group(self, nodelist, revlog, lookup, units=None): |
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309 """Calculate a delta group, yielding a sequence of changegroup chunks |
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310 (strings). |
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311 |
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312 Given a list of changeset revs, return a set of deltas and |
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313 metadata corresponding to nodes. The first delta is |
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314 first parent(nodelist[0]) -> nodelist[0], the receiver is |
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315 guaranteed to have this parent as it has all history before |
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316 these changesets. In the case firstparent is nullrev the |
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317 changegroup starts with a full revision. |
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318 |
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319 If units is not None, progress detail will be generated, units specifies |
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320 the type of revlog that is touched (changelog, manifest, etc.). |
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321 """ |
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322 # if we don't have any revisions touched by these changesets, bail |
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323 if len(nodelist) == 0: |
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324 yield self.close() |
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325 return |
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326 |
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327 # for generaldelta revlogs, we linearize the revs; this will both be |
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328 # much quicker and generate a much smaller bundle |
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329 if (revlog._generaldelta and self._reorder is None) or self._reorder: |
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330 dag = dagutil.revlogdag(revlog) |
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331 revs = set(revlog.rev(n) for n in nodelist) |
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332 revs = dag.linearize(revs) |
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333 else: |
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334 revs = sorted([revlog.rev(n) for n in nodelist]) |
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335 |
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336 # add the parent of the first rev |
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337 p = revlog.parentrevs(revs[0])[0] |
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338 revs.insert(0, p) |
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339 |
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340 # build deltas |
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341 total = len(revs) - 1 |
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342 msgbundling = _('bundling') |
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343 for r in xrange(len(revs) - 1): |
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344 if units is not None: |
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345 self._progress(msgbundling, r + 1, unit=units, total=total) |
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346 prev, curr = revs[r], revs[r + 1] |
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347 linknode = lookup(revlog.node(curr)) |
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348 for c in self.revchunk(revlog, curr, prev, linknode): |
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349 yield c |
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350 |
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351 if units is not None: |
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352 self._progress(msgbundling, None) |
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353 yield self.close() |
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354 |
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355 # filter any nodes that claim to be part of the known set |
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356 def prune(self, revlog, missing, commonrevs): |
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357 rr, rl = revlog.rev, revlog.linkrev |
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358 return [n for n in missing if rl(rr(n)) not in commonrevs] |
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359 |
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360 def generate(self, commonrevs, clnodes, fastpathlinkrev, source): |
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361 '''yield a sequence of changegroup chunks (strings)''' |
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362 repo = self._repo |
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363 cl = repo.changelog |
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364 ml = repo.manifest |
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365 |
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366 clrevorder = {} |
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367 mfs = {} # needed manifests |
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368 fnodes = {} # needed file nodes |
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369 changedfiles = set() |
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370 |
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371 # Callback for the changelog, used to collect changed files and manifest |
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372 # nodes. |
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373 # Returns the linkrev node (identity in the changelog case). |
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374 def lookupcl(x): |
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375 c = cl.read(x) |
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376 clrevorder[x] = len(clrevorder) |
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377 changedfiles.update(c[3]) |
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378 # record the first changeset introducing this manifest version |
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379 mfs.setdefault(c[0], x) |
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380 return x |
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381 |
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382 self._verbosenote(_('uncompressed size of bundle content:\n')) |
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383 size = 0 |
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384 for chunk in self.group(clnodes, cl, lookupcl, units=_('changesets')): |
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385 size += len(chunk) |
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386 yield chunk |
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387 self._verbosenote(_('%8.i (changelog)\n') % size) |
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388 |
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389 # We need to make sure that the linkrev in the changegroup refers to |
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390 # the first changeset that introduced the manifest or file revision. |
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391 # The fastpath is usually safer than the slowpath, because the filelogs |
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392 # are walked in revlog order. |
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393 # |
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394 # When taking the slowpath with reorder=None and the manifest revlog |
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395 # uses generaldelta, the manifest may be walked in the "wrong" order. |
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396 # Without 'clrevorder', we would get an incorrect linkrev (see fix in |
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397 # cc0ff93d0c0c). |
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398 # |
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399 # When taking the fastpath, we are only vulnerable to reordering |
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400 # of the changelog itself. The changelog never uses generaldelta, so |
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401 # it is only reordered when reorder=True. To handle this case, we |
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402 # simply take the slowpath, which already has the 'clrevorder' logic. |
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403 # This was also fixed in cc0ff93d0c0c. |
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404 fastpathlinkrev = fastpathlinkrev and not self._reorder |
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405 # Callback for the manifest, used to collect linkrevs for filelog |
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406 # revisions. |
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407 # Returns the linkrev node (collected in lookupcl). |
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408 def lookupmf(x): |
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409 clnode = mfs[x] |
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410 if not fastpathlinkrev: |
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411 mdata = ml.readfast(x) |
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412 for f, n in mdata.iteritems(): |
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413 if f in changedfiles: |
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414 # record the first changeset introducing this filelog |
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415 # version |
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416 fclnodes = fnodes.setdefault(f, {}) |
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417 fclnode = fclnodes.setdefault(n, clnode) |
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418 if clrevorder[clnode] < clrevorder[fclnode]: |
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419 fclnodes[n] = clnode |
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420 return clnode |
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421 |
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422 mfnodes = self.prune(ml, mfs, commonrevs) |
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423 size = 0 |
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424 for chunk in self.group(mfnodes, ml, lookupmf, units=_('manifests')): |
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425 size += len(chunk) |
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426 yield chunk |
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427 self._verbosenote(_('%8.i (manifests)\n') % size) |
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428 |
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429 mfs.clear() |
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430 clrevs = set(cl.rev(x) for x in clnodes) |
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431 |
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432 def linknodes(filerevlog, fname): |
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433 if fastpathlinkrev: |
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434 llr = filerevlog.linkrev |
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435 def genfilenodes(): |
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436 for r in filerevlog: |
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437 linkrev = llr(r) |
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438 if linkrev in clrevs: |
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439 yield filerevlog.node(r), cl.node(linkrev) |
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440 return dict(genfilenodes()) |
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441 return fnodes.get(fname, {}) |
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442 |
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443 for chunk in self.generatefiles(changedfiles, linknodes, commonrevs, |
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444 source): |
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445 yield chunk |
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446 |
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447 yield self.close() |
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448 |
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449 if clnodes: |
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450 repo.hook('outgoing', node=hex(clnodes[0]), source=source) |
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451 |
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|
452 # The 'source' parameter is useful for extensions |
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|
453 def generatefiles(self, changedfiles, linknodes, commonrevs, source): |
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|
454 repo = self._repo |
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diff
changeset
|
455 progress = self._progress |
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|
456 msgbundling = _('bundling') |
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|
457 |
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|
458 total = len(changedfiles) |
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|
459 # for progress output |
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|
460 msgfiles = _('files') |
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|
461 for i, fname in enumerate(sorted(changedfiles)): |
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462 filerevlog = repo.file(fname) |
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|
463 if not filerevlog: |
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|
464 raise util.Abort(_("empty or missing revlog for %s") % fname) |
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|
465 |
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|
466 linkrevnodes = linknodes(filerevlog, fname) |
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467 # Lookup for filenodes, we collected the linkrev nodes above in the |
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468 # fastpath case and with lookupmf in the slowpath case. |
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469 def lookupfilelog(x): |
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470 return linkrevnodes[x] |
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|
471 |
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changegroup: removed unused 'source' parameter from prune()
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472 filenodes = self.prune(filerevlog, linkrevnodes, commonrevs) |
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|
473 if filenodes: |
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changeset
|
474 progress(msgbundling, i + 1, item=fname, unit=msgfiles, |
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|
475 total=total) |
23748
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476 h = self.fileheader(fname) |
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477 size = len(h) |
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|
478 yield h |
24912
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changegroup.group: drop 'reorder' parameter
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479 for chunk in self.group(filenodes, filerevlog, lookupfilelog): |
23748
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480 size += len(chunk) |
19202
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481 yield chunk |
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482 self._verbosenote(_('%8.i %s\n') % (size, fname)) |
24901
e9edd53770fb
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|
483 progress(msgbundling, None) |
19200
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diff
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|
484 |
23181
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485 def deltaparent(self, revlog, rev, p1, p2, prev): |
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486 return prev |
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|
487 |
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488 def revchunk(self, revlog, rev, prev, linknode): |
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489 node = revlog.node(rev) |
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490 p1, p2 = revlog.parentrevs(rev) |
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491 base = self.deltaparent(revlog, rev, p1, p2, prev) |
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|
492 |
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493 prefix = '' |
24190
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494 if revlog.iscensored(base) or revlog.iscensored(rev): |
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|
495 try: |
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|
496 delta = revlog.revision(node) |
25660
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parents:
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|
497 except error.CensoredNodeError as e: |
24190
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diff
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|
498 delta = e.tombstone |
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|
499 if base == nullrev: |
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|
500 prefix = mdiff.trivialdiffheader(len(delta)) |
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|
501 else: |
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|
502 baselen = revlog.rawsize(base) |
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503 prefix = mdiff.replacediffheader(baselen, len(delta)) |
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|
504 elif base == nullrev: |
14143
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|
505 delta = revlog.revision(node) |
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|
506 prefix = mdiff.trivialdiffheader(len(delta)) |
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|
507 else: |
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|
508 delta = revlog.revdiff(base, rev) |
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|
509 p1n, p2n = revlog.parents(node) |
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|
510 basenode = revlog.node(base) |
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|
511 meta = self.builddeltaheader(node, p1n, p2n, basenode, linknode) |
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|
512 meta += prefix |
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diff
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|
513 l = len(meta) + len(delta) |
13831
d69c9510d648
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diff
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|
514 yield chunkheader(l) |
d69c9510d648
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|
515 yield meta |
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|
516 yield delta |
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|
517 def builddeltaheader(self, node, p1n, p2n, basenode, linknode): |
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|
518 # do nothing with basenode, it is implicitly the previous one in HG10 |
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|
519 return struct.pack(self.deltaheader, node, p1n, p2n, linknode) |
20925
5174c48ed8d8
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|
520 |
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|
521 class cg2packer(cg1packer): |
23896
becfecaf9087
changegroup.writebundle: HG2Y support
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parents:
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diff
changeset
|
522 version = '02' |
23181
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|
523 deltaheader = _CHANGEGROUPV2_DELTA_HEADER |
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diff
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|
524 |
24911
5447b8523fef
cg2packer: set reorder=False in __init__ instead of in group()
Martin von Zweigbergk <martinvonz@google.com>
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diff
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|
525 def __init__(self, repo, bundlecaps=None): |
5447b8523fef
cg2packer: set reorder=False in __init__ instead of in group()
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|
526 super(cg2packer, self).__init__(repo, bundlecaps) |
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cg2packer: set reorder=False in __init__ instead of in group()
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diff
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|
527 if self._reorder is None: |
5447b8523fef
cg2packer: set reorder=False in __init__ instead of in group()
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diff
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|
528 # Since generaldelta is directly supported by cg2, reordering |
5447b8523fef
cg2packer: set reorder=False in __init__ instead of in group()
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diff
changeset
|
529 # generally doesn't help, so we disable it by default (treating |
5447b8523fef
cg2packer: set reorder=False in __init__ instead of in group()
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diff
changeset
|
530 # bundle.reorder=auto just like bundle.reorder=False). |
5447b8523fef
cg2packer: set reorder=False in __init__ instead of in group()
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|
531 self._reorder = False |
23181
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|
532 |
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|
533 def deltaparent(self, revlog, rev, p1, p2, prev): |
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|
534 dp = revlog.deltaparent(rev) |
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|
535 # avoid storing full revisions; pick prev in those cases |
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|
536 # also pick prev when we can't be sure remote has dp |
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|
537 if dp == nullrev or (dp != p1 and dp != p2 and dp != prev): |
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|
538 return prev |
832b7ef275c8
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diff
changeset
|
539 return dp |
832b7ef275c8
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diff
changeset
|
540 |
832b7ef275c8
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diff
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|
541 def builddeltaheader(self, node, p1n, p2n, basenode, linknode): |
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|
542 return struct.pack(self.deltaheader, node, p1n, p2n, basenode, linknode) |
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|
543 |
832b7ef275c8
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|
544 packermap = {'01': (cg1packer, cg1unpacker), |
832b7ef275c8
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|
545 '02': (cg2packer, cg2unpacker)} |
23168
a92ba36a1a9d
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22971
diff
changeset
|
546 |
20926
7c1ed40e3325
localrepo: move the changegroupinfo method in changegroup module
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20925
diff
changeset
|
547 def _changegroupinfo(repo, nodes, source): |
7c1ed40e3325
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diff
changeset
|
548 if repo.ui.verbose or source == 'bundle': |
7c1ed40e3325
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diff
changeset
|
549 repo.ui.status(_("%d changesets found\n") % len(nodes)) |
7c1ed40e3325
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diff
changeset
|
550 if repo.ui.debugflag: |
7c1ed40e3325
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diff
changeset
|
551 repo.ui.debug("list of changesets:\n") |
7c1ed40e3325
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diff
changeset
|
552 for node in nodes: |
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diff
changeset
|
553 repo.ui.debug("%s\n" % hex(node)) |
7c1ed40e3325
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diff
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|
554 |
23177
706547a14b8b
changegroup: introduce "raw" versions of some commands
Sune Foldager <cryo@cyanite.org>
parents:
23168
diff
changeset
|
555 def getsubsetraw(repo, outgoing, bundler, source, fastpath=False): |
20925
5174c48ed8d8
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diff
changeset
|
556 repo = repo.unfiltered() |
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diff
changeset
|
557 commonrevs = outgoing.common |
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diff
changeset
|
558 csets = outgoing.missing |
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changeset
|
559 heads = outgoing.missingheads |
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560 # We go through the fast path if we get told to, or if all (unfiltered |
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561 # heads have been requested (since we then know there all linkrevs will |
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562 # be pulled by the client). |
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563 heads.sort() |
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564 fastpathlinkrev = fastpath or ( |
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565 repo.filtername is None and heads == sorted(repo.heads())) |
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566 |
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567 repo.hook('preoutgoing', throw=True, source=source) |
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568 _changegroupinfo(repo, csets, source) |
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569 return bundler.generate(commonrevs, csets, fastpathlinkrev, source) |
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570 |
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571 def getsubset(repo, outgoing, bundler, source, fastpath=False, version='01'): |
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572 gengroup = getsubsetraw(repo, outgoing, bundler, source, fastpath) |
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573 return packermap[version][1](util.chunkbuffer(gengroup), None) |
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574 |
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575 def changegroupsubset(repo, roots, heads, source, version='01'): |
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576 """Compute a changegroup consisting of all the nodes that are |
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577 descendants of any of the roots and ancestors of any of the heads. |
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578 Return a chunkbuffer object whose read() method will return |
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579 successive changegroup chunks. |
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580 |
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581 It is fairly complex as determining which filenodes and which |
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582 manifest nodes need to be included for the changeset to be complete |
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583 is non-trivial. |
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584 |
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585 Another wrinkle is doing the reverse, figuring out which changeset in |
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586 the changegroup a particular filenode or manifestnode belongs to. |
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587 """ |
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588 cl = repo.changelog |
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589 if not roots: |
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590 roots = [nullid] |
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591 discbases = [] |
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592 for n in roots: |
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593 discbases.extend([p for p in cl.parents(n) if p != nullid]) |
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594 # TODO: remove call to nodesbetween. |
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595 csets, roots, heads = cl.nodesbetween(roots, heads) |
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596 included = set(csets) |
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597 discbases = [n for n in discbases if n not in included] |
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598 outgoing = discovery.outgoing(cl, discbases, heads) |
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599 bundler = packermap[version][0](repo) |
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600 return getsubset(repo, outgoing, bundler, source, version=version) |
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601 |
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602 def getlocalchangegroupraw(repo, source, outgoing, bundlecaps=None, |
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603 version='01'): |
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604 """Like getbundle, but taking a discovery.outgoing as an argument. |
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605 |
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606 This is only implemented for local repos and reuses potentially |
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607 precomputed sets in outgoing. Returns a raw changegroup generator.""" |
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608 if not outgoing.missing: |
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609 return None |
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610 bundler = packermap[version][0](repo, bundlecaps) |
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611 return getsubsetraw(repo, outgoing, bundler, source) |
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612 |
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613 def getlocalchangegroup(repo, source, outgoing, bundlecaps=None): |
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614 """Like getbundle, but taking a discovery.outgoing as an argument. |
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615 |
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616 This is only implemented for local repos and reuses potentially |
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617 precomputed sets in outgoing.""" |
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618 if not outgoing.missing: |
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619 return None |
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620 bundler = cg1packer(repo, bundlecaps) |
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621 return getsubset(repo, outgoing, bundler, source) |
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622 |
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623 def computeoutgoing(repo, heads, common): |
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624 """Computes which revs are outgoing given a set of common |
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625 and a set of heads. |
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626 |
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627 This is a separate function so extensions can have access to |
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628 the logic. |
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629 |
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630 Returns a discovery.outgoing object. |
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631 """ |
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632 cl = repo.changelog |
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633 if common: |
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634 hasnode = cl.hasnode |
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635 common = [n for n in common if hasnode(n)] |
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636 else: |
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637 common = [nullid] |
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638 if not heads: |
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639 heads = cl.heads() |
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640 return discovery.outgoing(cl, common, heads) |
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641 |
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642 def getchangegroup(repo, source, heads=None, common=None, bundlecaps=None): |
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643 """Like changegroupsubset, but returns the set difference between the |
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644 ancestors of heads and the ancestors common. |
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645 |
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646 If heads is None, use the local heads. If common is None, use [nullid]. |
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647 |
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648 The nodes in common might not all be known locally due to the way the |
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649 current discovery protocol works. |
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650 """ |
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651 outgoing = computeoutgoing(repo, heads, common) |
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652 return getlocalchangegroup(repo, source, outgoing, bundlecaps=bundlecaps) |
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653 |
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654 def changegroup(repo, basenodes, source): |
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655 # to avoid a race we use changegroupsubset() (issue1320) |
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656 return changegroupsubset(repo, basenodes, repo.heads(), source) |
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657 |
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658 def addchangegroupfiles(repo, source, revmap, trp, pr, needfiles): |
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659 revisions = 0 |
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660 files = 0 |
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661 while True: |
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662 chunkdata = source.filelogheader() |
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663 if not chunkdata: |
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664 break |
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665 f = chunkdata["filename"] |
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666 repo.ui.debug("adding %s revisions\n" % f) |
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667 pr() |
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668 fl = repo.file(f) |
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669 o = len(fl) |
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670 try: |
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671 if not fl.addgroup(source, revmap, trp): |
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672 raise util.Abort(_("received file revlog group is empty")) |
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673 except error.CensoredBaseError as e: |
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674 raise util.Abort(_("received delta base is censored: %s") % e) |
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675 revisions += len(fl) - o |
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676 files += 1 |
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677 if f in needfiles: |
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678 needs = needfiles[f] |
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679 for new in xrange(o, len(fl)): |
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680 n = fl.node(new) |
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681 if n in needs: |
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682 needs.remove(n) |
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683 else: |
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684 raise util.Abort( |
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685 _("received spurious file revlog entry")) |
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686 if not needs: |
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687 del needfiles[f] |
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688 repo.ui.progress(_('files'), None) |
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689 |
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690 for f, needs in needfiles.iteritems(): |
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691 fl = repo.file(f) |
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692 for n in needs: |
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693 try: |
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694 fl.rev(n) |
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695 except error.LookupError: |
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696 raise util.Abort( |
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697 _('missing file data for %s:%s - run hg verify') % |
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698 (f, hex(n))) |
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699 |
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700 return revisions, files |
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701 |
22041
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diff
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|
702 def addchangegroup(repo, source, srctype, url, emptyok=False, |
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703 targetphase=phases.draft, expectedtotal=None): |
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704 """Add the changegroup returned by source.read() to this repo. |
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705 srctype is a string like 'push', 'pull', or 'unbundle'. url is |
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706 the URL of the repo where this changegroup is coming from. |
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707 |
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708 Return an integer summarizing the change to this repo: |
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709 - nothing changed or no source: 0 |
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710 - more heads than before: 1+added heads (2..n) |
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711 - fewer heads than before: -1-removed heads (-2..-n) |
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712 - number of heads stays the same: 1 |
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713 """ |
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714 repo = repo.unfiltered() |
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715 def csmap(x): |
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716 repo.ui.debug("add changeset %s\n" % short(x)) |
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717 return len(cl) |
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|
718 |
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|
719 def revmap(x): |
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720 return cl.rev(x) |
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721 |
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722 if not source: |
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723 return 0 |
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724 |
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725 changesets = files = revisions = 0 |
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|
726 |
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|
727 tr = repo.transaction("\n".join([srctype, util.hidepassword(url)])) |
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|
728 # The transaction could have been created before and already carries source |
3fe571c74b27
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|
729 # information. In this case we use the top level data. We overwrite the |
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|
730 # argument because we need to use the top level value (if they exist) in |
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|
731 # this function. |
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|
732 srctype = tr.hookargs.setdefault('source', srctype) |
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|
733 url = tr.hookargs.setdefault('url', url) |
23203
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changelog: handle writepending in the transaction
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23181
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|
734 |
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changeset
|
735 # write changelog data to temp files so concurrent readers will not see |
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|
736 # inconsistent view |
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|
737 cl = repo.changelog |
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|
738 cl.delayupdate(tr) |
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|
739 oldheads = cl.heads() |
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|
740 try: |
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changeset
|
741 repo.hook('prechangegroup', throw=True, **tr.hookargs) |
22969
805c18b27f48
addchangegroup: call `prechangegroup` hook after transaction retrieval
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22968
diff
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|
742 |
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743 trp = weakref.proxy(tr) |
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|
744 # pull off the changeset group |
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745 repo.ui.status(_("adding changesets\n")) |
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|
746 clstart = len(cl) |
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|
747 class prog(object): |
25574
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|
748 def __init__(self, step, total): |
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749 self._step = step |
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|
750 self._total = total |
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|
751 self._count = 1 |
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3e89e67f17e8
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diff
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|
752 def __call__(self): |
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|
753 repo.ui.progress(self._step, self._count, unit=_('chunks'), |
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|
754 total=self._total) |
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|
755 self._count += 1 |
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|
756 source.callback = prog(_('changesets'), expectedtotal) |
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|
757 |
25823
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diff
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|
758 efiles = set() |
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|
759 def onchangelog(cl, node): |
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|
760 efiles.update(cl.read(node)[3]) |
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|
761 |
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changeset
|
762 source.changelogheader() |
25823
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changeset
|
763 srccontent = cl.addgroup(source, csmap, trp, |
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|
764 addrevisioncb=onchangelog) |
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changeset
|
765 efiles = len(efiles) |
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|
766 |
20933
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|
767 if not (srccontent or emptyok): |
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|
768 raise util.Abort(_("received changelog group is empty")) |
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|
769 clend = len(cl) |
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|
770 changesets = clend - clstart |
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|
771 repo.ui.progress(_('changesets'), None) |
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772 |
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773 # pull off the manifest group |
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774 repo.ui.status(_("adding manifests\n")) |
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775 # manifests <= changesets |
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776 source.callback = prog(_('manifests'), changesets) |
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777 # no need to check for empty manifest group here: |
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778 # if the result of the merge of 1 and 2 is the same in 3 and 4, |
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779 # no new manifest will be created and the manifest group will |
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780 # be empty during the pull |
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781 source.manifestheader() |
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782 repo.manifest.addgroup(source, revmap, trp) |
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783 repo.ui.progress(_('manifests'), None) |
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784 |
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785 needfiles = {} |
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786 if repo.ui.configbool('server', 'validate', default=False): |
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787 # validate incoming csets have their manifests |
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788 for cset in xrange(clstart, clend): |
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789 mfnode = repo.changelog.read(repo.changelog.node(cset))[0] |
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790 mfest = repo.manifest.readdelta(mfnode) |
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791 # store file nodes we must see |
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792 for f, n in mfest.iteritems(): |
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793 needfiles.setdefault(f, set()).add(n) |
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794 |
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795 # process the files |
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796 repo.ui.status(_("adding file changes\n")) |
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797 source.callback = None |
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798 pr = prog(_('files'), efiles) |
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799 newrevs, newfiles = addchangegroupfiles(repo, source, revmap, trp, pr, |
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800 needfiles) |
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801 revisions += newrevs |
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802 files += newfiles |
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803 |
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804 dh = 0 |
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805 if oldheads: |
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806 heads = cl.heads() |
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807 dh = len(heads) - len(oldheads) |
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808 for h in heads: |
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809 if h not in oldheads and repo[h].closesbranch(): |
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810 dh -= 1 |
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811 htext = "" |
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812 if dh: |
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813 htext = _(" (%+d heads)") % dh |
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814 |
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815 repo.ui.status(_("added %d changesets" |
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816 " with %d changes to %d files%s\n") |
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817 % (changesets, revisions, files, htext)) |
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818 repo.invalidatevolatilesets() |
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819 |
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820 if changesets > 0: |
23203
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821 p = lambda: tr.writepending() and repo.root or "" |
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822 if 'node' not in tr.hookargs: |
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823 tr.hookargs['node'] = hex(cl.node(clstart)) |
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824 hookargs = dict(tr.hookargs) |
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825 else: |
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826 hookargs = dict(tr.hookargs) |
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827 hookargs['node'] = hex(cl.node(clstart)) |
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828 repo.hook('pretxnchangegroup', throw=True, pending=p, **hookargs) |
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829 |
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830 added = [cl.node(r) for r in xrange(clstart, clend)] |
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831 publishing = repo.publishing() |
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832 if srctype in ('push', 'serve'): |
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833 # Old servers can not push the boundary themselves. |
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834 # New servers won't push the boundary if changeset already |
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835 # exists locally as secret |
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836 # |
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837 # We should not use added here but the list of all change in |
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838 # the bundle |
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839 if publishing: |
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840 phases.advanceboundary(repo, tr, phases.public, srccontent) |
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841 else: |
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842 # Those changesets have been pushed from the outside, their |
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843 # phases are going to be pushed alongside. Therefor |
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844 # `targetphase` is ignored. |
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845 phases.advanceboundary(repo, tr, phases.draft, srccontent) |
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846 phases.retractboundary(repo, tr, phases.draft, added) |
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847 elif srctype != 'strip': |
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848 # publishing only alter behavior during push |
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849 # |
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850 # strip should not touch boundary at all |
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851 phases.retractboundary(repo, tr, targetphase, added) |
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852 |
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853 if changesets > 0: |
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854 if srctype != 'strip': |
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855 # During strip, branchcache is invalid but coming call to |
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856 # `destroyed` will repair it. |
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857 # In other case we can safely update cache on disk. |
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858 branchmap.updatecache(repo.filtered('served')) |
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859 |
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860 def runhooks(): |
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861 # These hooks run when the lock releases, not when the |
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862 # transaction closes. So it's possible for the changelog |
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863 # to have changed since we last saw it. |
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864 if clstart >= len(repo): |
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865 return |
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866 |
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867 # forcefully update the on-disk branch cache |
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868 repo.ui.debug("updating the branch cache\n") |
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|
869 repo.hook("changegroup", **hookargs) |
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870 |
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871 for n in added: |
22968
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|
872 args = hookargs.copy() |
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|
873 args['node'] = hex(n) |
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|
874 repo.hook("incoming", **args) |
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|
875 |
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876 newheads = [h for h in repo.heads() if h not in oldheads] |
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877 repo.ui.log("incoming", |
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878 "%s incoming changes - new heads: %s\n", |
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879 len(added), |
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880 ', '.join([hex(c[:6]) for c in newheads])) |
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changegroup: use the 'postclose' API on transaction
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881 |
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changegroup: use the 'postclose' API on transaction
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882 tr.addpostclose('changegroup-runhooks-%020i' % clstart, |
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transaction: pass the transaction to 'postclose' callback
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883 lambda tr: repo._afterlock(runhooks)) |
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884 |
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885 tr.close() |
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886 |
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887 finally: |
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888 tr.release() |
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889 repo.ui.flush() |
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890 # never return 0 here: |
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891 if dh < 0: |
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892 return dh - 1 |
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893 else: |
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894 return dh + 1 |