Mercurial > hg
annotate mercurial/changegroup.py @ 27734:5c0fd878779c
treemanifests: set bundle2 part parameter indicating treemanifest
By adding a mandatory 'treemanifest' parameter in the bundle2 part, we
make it possible for the recipient to set repo requirements before the
manifest revlog is accessed.
author | Martin von Zweigbergk <martinvonz@google.com> |
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date | Fri, 08 Jan 2016 21:13:06 -0800 |
parents | b0d23a55f91e |
children | bd37212c20ed |
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 _CHANGEGROUPV3_DELTA_HEADER = ">20s20s20s20s20sH" |
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36 |
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37 def readexactly(stream, n): |
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38 '''read n bytes from stream.read and abort if less was available''' |
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39 s = stream.read(n) |
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40 if len(s) < n: |
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41 raise error.Abort(_("stream ended unexpectedly" |
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42 " (got %d bytes, expected %d)") |
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43 % (len(s), n)) |
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44 return s |
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45 |
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46 def getchunk(stream): |
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47 """return the next chunk from stream as a string""" |
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48 d = readexactly(stream, 4) |
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49 l = struct.unpack(">l", d)[0] |
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50 if l <= 4: |
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51 if l: |
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52 raise error.Abort(_("invalid chunk length %d") % l) |
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53 return "" |
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54 return readexactly(stream, l - 4) |
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55 |
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56 def chunkheader(length): |
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57 """return a changegroup chunk header (string)""" |
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58 return struct.pack(">l", length + 4) |
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59 |
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60 def closechunk(): |
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61 """return a changegroup chunk header (string) for a zero-length chunk""" |
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62 return struct.pack(">l", 0) |
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63 |
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64 def combineresults(results): |
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65 """logic to combine 0 or more addchangegroup results into one""" |
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66 changedheads = 0 |
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67 result = 1 |
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68 for ret in results: |
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69 # If any changegroup result is 0, return 0 |
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70 if ret == 0: |
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71 result = 0 |
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72 break |
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73 if ret < -1: |
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74 changedheads += ret + 1 |
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75 elif ret > 1: |
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76 changedheads += ret - 1 |
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77 if changedheads > 0: |
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78 result = 1 + changedheads |
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79 elif changedheads < 0: |
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80 result = -1 + changedheads |
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81 return result |
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82 |
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83 bundletypes = { |
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84 "": ("", None), # only when using unbundle on ssh and old http servers |
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85 # since the unification ssh accepts a header but there |
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86 # is no capability signaling it. |
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87 "HG20": (), # special-cased below |
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88 "HG10UN": ("HG10UN", None), |
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89 "HG10BZ": ("HG10", 'BZ'), |
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90 "HG10GZ": ("HG10GZ", 'GZ'), |
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91 } |
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92 |
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94 bundlepriority = ['HG10GZ', 'HG10BZ', 'HG10UN'] |
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95 |
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96 def writechunks(ui, chunks, filename, vfs=None): |
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97 """Write chunks to a file and return its filename. |
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98 |
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99 The stream is assumed to be a bundle file. |
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100 Existing files will not be overwritten. |
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101 If no filename is specified, a temporary file is created. |
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102 """ |
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103 fh = None |
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104 cleanup = None |
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105 try: |
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106 if filename: |
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107 if vfs: |
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108 fh = vfs.open(filename, "wb") |
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109 else: |
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110 fh = open(filename, "wb") |
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111 else: |
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112 fd, filename = tempfile.mkstemp(prefix="hg-bundle-", suffix=".hg") |
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113 fh = os.fdopen(fd, "wb") |
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114 cleanup = filename |
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115 for c in chunks: |
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116 fh.write(c) |
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117 cleanup = None |
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118 return filename |
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119 finally: |
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120 if fh is not None: |
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121 fh.close() |
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122 if cleanup is not None: |
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123 if filename and vfs: |
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124 vfs.unlink(cleanup) |
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125 else: |
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126 os.unlink(cleanup) |
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127 |
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128 def writebundle(ui, cg, filename, bundletype, vfs=None, compression=None): |
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129 """Write a bundle file and return its filename. |
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130 |
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131 Existing files will not be overwritten. |
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132 If no filename is specified, a temporary file is created. |
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133 bz2 compression can be turned off. |
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134 The bundle file will be deleted in case of errors. |
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135 """ |
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136 |
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137 if bundletype == "HG20": |
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138 from . import bundle2 |
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139 bundle = bundle2.bundle20(ui) |
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140 bundle.setcompression(compression) |
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141 part = bundle.newpart('changegroup', data=cg.getchunks()) |
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142 part.addparam('version', cg.version) |
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143 chunkiter = bundle.getchunks() |
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144 else: |
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145 # compression argument is only for the bundle2 case |
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146 assert compression is None |
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147 if cg.version != '01': |
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148 raise error.Abort(_('old bundle types only supports v1 ' |
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149 'changegroups')) |
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150 header, comp = bundletypes[bundletype] |
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151 if comp not in util.compressors: |
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152 raise error.Abort(_('unknown stream compression type: %s') |
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153 % comp) |
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154 z = util.compressors[comp]() |
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155 subchunkiter = cg.getchunks() |
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156 def chunkiter(): |
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157 yield header |
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158 for chunk in subchunkiter: |
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159 yield z.compress(chunk) |
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160 yield z.flush() |
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161 chunkiter = chunkiter() |
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162 |
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163 # parse the changegroup data, otherwise we will block |
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164 # in case of sshrepo because we don't know the end of the stream |
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165 |
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166 # an empty chunkgroup is the end of the changegroup |
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167 # a changegroup has at least 2 chunkgroups (changelog and manifest). |
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168 # after that, an empty chunkgroup is the end of the changegroup |
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169 return writechunks(ui, chunkiter, filename, vfs=vfs) |
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170 |
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171 class cg1unpacker(object): |
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172 """Unpacker for cg1 changegroup streams. |
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173 |
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174 A changegroup unpacker handles the framing of the revision data in |
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175 the wire format. Most consumers will want to use the apply() |
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176 method to add the changes from the changegroup to a repository. |
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177 |
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178 If you're forwarding a changegroup unmodified to another consumer, |
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179 use getchunks(), which returns an iterator of changegroup |
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180 chunks. This is mostly useful for cases where you need to know the |
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181 data stream has ended by observing the end of the changegroup. |
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182 |
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183 deltachunk() is useful only if you're applying delta data. Most |
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184 consumers should prefer apply() instead. |
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185 |
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186 A few other public methods exist. Those are used only for |
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187 bundlerepo and some debug commands - their use is discouraged. |
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188 """ |
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189 deltaheader = _CHANGEGROUPV1_DELTA_HEADER |
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190 deltaheadersize = struct.calcsize(deltaheader) |
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191 version = '01' |
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192 def __init__(self, fh, alg): |
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193 if alg == 'UN': |
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194 alg = None # get more modern without breaking too much |
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195 if not alg in util.decompressors: |
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196 raise error.Abort(_('unknown stream compression type: %s') |
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197 % alg) |
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198 if alg == 'BZ': |
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199 alg = '_truncatedBZ' |
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200 self._stream = util.decompressors[alg](fh) |
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201 self._type = alg |
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202 self.callback = None |
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203 |
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204 # These methods (compressed, read, seek, tell) all appear to only |
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205 # be used by bundlerepo, but it's a little hard to tell. |
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206 def compressed(self): |
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207 return self._type is not None |
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208 def read(self, l): |
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209 return self._stream.read(l) |
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210 def seek(self, pos): |
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211 return self._stream.seek(pos) |
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212 def tell(self): |
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213 return self._stream.tell() |
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214 def close(self): |
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215 return self._stream.close() |
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216 |
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217 def _chunklength(self): |
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218 d = readexactly(self._stream, 4) |
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219 l = struct.unpack(">l", d)[0] |
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220 if l <= 4: |
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221 if l: |
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222 raise error.Abort(_("invalid chunk length %d") % l) |
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223 return 0 |
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224 if self.callback: |
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225 self.callback() |
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226 return l - 4 |
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227 |
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228 def changelogheader(self): |
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229 """v10 does not have a changelog header chunk""" |
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230 return {} |
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231 |
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232 def manifestheader(self): |
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233 """v10 does not have a manifest header chunk""" |
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234 return {} |
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235 |
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236 def filelogheader(self): |
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237 """return the header of the filelogs chunk, v10 only has the filename""" |
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238 l = self._chunklength() |
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239 if not l: |
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240 return {} |
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241 fname = readexactly(self._stream, l) |
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242 return {'filename': fname} |
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243 |
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244 def _deltaheader(self, headertuple, prevnode): |
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245 node, p1, p2, cs = headertuple |
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246 if prevnode is None: |
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247 deltabase = p1 |
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248 else: |
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249 deltabase = prevnode |
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250 flags = 0 |
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251 return node, p1, p2, deltabase, cs, flags |
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252 |
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253 def deltachunk(self, prevnode): |
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254 l = self._chunklength() |
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255 if not l: |
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256 return {} |
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257 headerdata = readexactly(self._stream, self.deltaheadersize) |
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258 header = struct.unpack(self.deltaheader, headerdata) |
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259 delta = readexactly(self._stream, l - self.deltaheadersize) |
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260 node, p1, p2, deltabase, cs, flags = self._deltaheader(header, prevnode) |
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261 return {'node': node, 'p1': p1, 'p2': p2, 'cs': cs, |
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262 'deltabase': deltabase, 'delta': delta, 'flags': flags} |
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263 |
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264 def getchunks(self): |
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265 """returns all the chunks contains in the bundle |
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266 |
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267 Used when you need to forward the binary stream to a file or another |
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268 network API. To do so, it parse the changegroup data, otherwise it will |
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269 block in case of sshrepo because it don't know the end of the stream. |
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270 """ |
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271 # an empty chunkgroup is the end of the changegroup |
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272 # a changegroup has at least 2 chunkgroups (changelog and manifest). |
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273 # after that, an empty chunkgroup is the end of the changegroup |
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274 empty = False |
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275 count = 0 |
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276 while not empty or count <= 2: |
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277 empty = True |
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278 count += 1 |
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279 while True: |
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280 chunk = getchunk(self) |
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281 if not chunk: |
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282 break |
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283 empty = False |
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284 yield chunkheader(len(chunk)) |
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285 pos = 0 |
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286 while pos < len(chunk): |
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287 next = pos + 2**20 |
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288 yield chunk[pos:next] |
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289 pos = next |
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290 yield closechunk() |
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291 |
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292 def _unpackmanifests(self, repo, revmap, trp, prog, numchanges): |
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293 # We know that we'll never have more manifests than we had |
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294 # changesets. |
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295 self.callback = prog(_('manifests'), numchanges) |
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296 # no need to check for empty manifest group here: |
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297 # if the result of the merge of 1 and 2 is the same in 3 and 4, |
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298 # no new manifest will be created and the manifest group will |
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299 # be empty during the pull |
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300 self.manifestheader() |
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301 repo.manifest.addgroup(self, revmap, trp) |
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302 repo.ui.progress(_('manifests'), None) |
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303 |
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304 def apply(self, repo, srctype, url, emptyok=False, |
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305 targetphase=phases.draft, expectedtotal=None): |
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306 """Add the changegroup returned by source.read() to this repo. |
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307 srctype is a string like 'push', 'pull', or 'unbundle'. url is |
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308 the URL of the repo where this changegroup is coming from. |
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309 |
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310 Return an integer summarizing the change to this repo: |
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311 - nothing changed or no source: 0 |
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312 - more heads than before: 1+added heads (2..n) |
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313 - fewer heads than before: -1-removed heads (-2..-n) |
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314 - number of heads stays the same: 1 |
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315 """ |
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316 repo = repo.unfiltered() |
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317 wasempty = (len(repo.changelog) == 0) |
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318 def csmap(x): |
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319 repo.ui.debug("add changeset %s\n" % short(x)) |
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320 return len(cl) |
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321 |
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322 def revmap(x): |
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323 return cl.rev(x) |
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324 |
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325 changesets = files = revisions = 0 |
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326 |
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327 tr = repo.transaction("\n".join([srctype, util.hidepassword(url)])) |
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328 try: |
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329 # The transaction could have been created before and already |
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330 # carries source information. In this case we use the top |
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331 # level data. We overwrite the argument because we need to use |
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332 # the top level value (if they exist) in this function. |
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333 srctype = tr.hookargs.setdefault('source', srctype) |
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334 url = tr.hookargs.setdefault('url', url) |
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335 repo.hook('prechangegroup', throw=True, **tr.hookargs) |
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336 |
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337 # write changelog data to temp files so concurrent readers |
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338 # will not see an inconsistent view |
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339 cl = repo.changelog |
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340 cl.delayupdate(tr) |
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341 oldheads = cl.heads() |
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342 |
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343 trp = weakref.proxy(tr) |
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344 # pull off the changeset group |
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345 repo.ui.status(_("adding changesets\n")) |
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346 clstart = len(cl) |
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347 class prog(object): |
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348 def __init__(self, step, total): |
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349 self._step = step |
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350 self._total = total |
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351 self._count = 1 |
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352 def __call__(self): |
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353 repo.ui.progress(self._step, self._count, unit=_('chunks'), |
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354 total=self._total) |
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355 self._count += 1 |
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356 self.callback = prog(_('changesets'), expectedtotal) |
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357 |
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358 efiles = set() |
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359 def onchangelog(cl, node): |
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360 efiles.update(cl.read(node)[3]) |
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361 |
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362 self.changelogheader() |
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363 srccontent = cl.addgroup(self, csmap, trp, |
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364 addrevisioncb=onchangelog) |
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365 efiles = len(efiles) |
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366 |
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367 if not (srccontent or emptyok): |
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368 raise error.Abort(_("received changelog group is empty")) |
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369 clend = len(cl) |
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370 changesets = clend - clstart |
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371 repo.ui.progress(_('changesets'), None) |
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372 |
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373 # pull off the manifest group |
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374 repo.ui.status(_("adding manifests\n")) |
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375 self._unpackmanifests(repo, revmap, trp, prog, changesets) |
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376 |
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377 needfiles = {} |
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378 if repo.ui.configbool('server', 'validate', default=False): |
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379 # validate incoming csets have their manifests |
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380 for cset in xrange(clstart, clend): |
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381 mfnode = repo.changelog.read(repo.changelog.node(cset))[0] |
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382 mfest = repo.manifest.readdelta(mfnode) |
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383 # store file nodes we must see |
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384 for f, n in mfest.iteritems(): |
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385 needfiles.setdefault(f, set()).add(n) |
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386 |
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387 # process the files |
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388 repo.ui.status(_("adding file changes\n")) |
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389 self.callback = None |
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390 pr = prog(_('files'), efiles) |
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391 newrevs, newfiles = _addchangegroupfiles( |
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392 repo, self, revmap, trp, pr, needfiles, wasempty) |
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393 revisions += newrevs |
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394 files += newfiles |
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395 |
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396 dh = 0 |
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397 if oldheads: |
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398 heads = cl.heads() |
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399 dh = len(heads) - len(oldheads) |
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400 for h in heads: |
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401 if h not in oldheads and repo[h].closesbranch(): |
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402 dh -= 1 |
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403 htext = "" |
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404 if dh: |
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405 htext = _(" (%+d heads)") % dh |
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406 |
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407 repo.ui.status(_("added %d changesets" |
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408 " with %d changes to %d files%s\n") |
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409 % (changesets, revisions, files, htext)) |
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410 repo.invalidatevolatilesets() |
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411 |
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412 if changesets > 0: |
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413 if 'node' not in tr.hookargs: |
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414 tr.hookargs['node'] = hex(cl.node(clstart)) |
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415 hookargs = dict(tr.hookargs) |
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416 else: |
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417 hookargs = dict(tr.hookargs) |
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418 hookargs['node'] = hex(cl.node(clstart)) |
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419 repo.hook('pretxnchangegroup', throw=True, **hookargs) |
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420 |
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421 added = [cl.node(r) for r in xrange(clstart, clend)] |
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422 publishing = repo.publishing() |
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423 if srctype in ('push', 'serve'): |
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424 # Old servers can not push the boundary themselves. |
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425 # New servers won't push the boundary if changeset already |
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426 # exists locally as secret |
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427 # |
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428 # We should not use added here but the list of all change in |
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429 # the bundle |
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430 if publishing: |
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431 phases.advanceboundary(repo, tr, phases.public, srccontent) |
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432 else: |
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433 # Those changesets have been pushed from the outside, their |
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434 # phases are going to be pushed alongside. Therefor |
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435 # `targetphase` is ignored. |
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436 phases.advanceboundary(repo, tr, phases.draft, srccontent) |
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437 phases.retractboundary(repo, tr, phases.draft, added) |
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438 elif srctype != 'strip': |
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439 # publishing only alter behavior during push |
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440 # |
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441 # strip should not touch boundary at all |
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442 phases.retractboundary(repo, tr, targetphase, added) |
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443 |
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444 if changesets > 0: |
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445 if srctype != 'strip': |
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446 # During strip, branchcache is invalid but coming call to |
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447 # `destroyed` will repair it. |
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448 # In other case we can safely update cache on disk. |
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449 branchmap.updatecache(repo.filtered('served')) |
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450 |
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451 def runhooks(): |
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452 # These hooks run when the lock releases, not when the |
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453 # transaction closes. So it's possible for the changelog |
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454 # to have changed since we last saw it. |
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455 if clstart >= len(repo): |
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456 return |
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457 |
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458 # forcefully update the on-disk branch cache |
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459 repo.ui.debug("updating the branch cache\n") |
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460 repo.hook("changegroup", **hookargs) |
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461 |
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462 for n in added: |
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463 args = hookargs.copy() |
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464 args['node'] = hex(n) |
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465 repo.hook("incoming", **args) |
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466 |
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467 newheads = [h for h in repo.heads() if h not in oldheads] |
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468 repo.ui.log("incoming", |
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469 "%s incoming changes - new heads: %s\n", |
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470 len(added), |
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471 ', '.join([hex(c[:6]) for c in newheads])) |
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472 |
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473 tr.addpostclose('changegroup-runhooks-%020i' % clstart, |
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474 lambda tr: repo._afterlock(runhooks)) |
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475 |
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476 tr.close() |
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477 |
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478 finally: |
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479 tr.release() |
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480 repo.ui.flush() |
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481 # never return 0 here: |
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482 if dh < 0: |
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483 return dh - 1 |
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484 else: |
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485 return dh + 1 |
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486 |
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487 class cg2unpacker(cg1unpacker): |
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488 """Unpacker for cg2 streams. |
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489 |
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490 cg2 streams add support for generaldelta, so the delta header |
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491 format is slightly different. All other features about the data |
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492 remain the same. |
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493 """ |
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494 deltaheader = _CHANGEGROUPV2_DELTA_HEADER |
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495 deltaheadersize = struct.calcsize(deltaheader) |
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496 version = '02' |
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497 |
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498 def _deltaheader(self, headertuple, prevnode): |
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499 node, p1, p2, deltabase, cs = headertuple |
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500 flags = 0 |
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501 return node, p1, p2, deltabase, cs, flags |
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502 |
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503 class cg3unpacker(cg2unpacker): |
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504 """Unpacker for cg3 streams. |
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505 |
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506 cg3 streams add support for exchanging treemanifests and revlog |
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507 flags, so the only changes from cg2 are the delta header and |
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508 version number. |
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509 """ |
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510 deltaheader = _CHANGEGROUPV3_DELTA_HEADER |
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511 deltaheadersize = struct.calcsize(deltaheader) |
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512 version = '03' |
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513 |
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514 def _deltaheader(self, headertuple, prevnode): |
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515 node, p1, p2, deltabase, cs, flags = headertuple |
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516 return node, p1, p2, deltabase, cs, flags |
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517 |
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518 class headerlessfixup(object): |
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519 def __init__(self, fh, h): |
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520 self._h = h |
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521 self._fh = fh |
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522 def read(self, n): |
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523 if self._h: |
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524 d, self._h = self._h[:n], self._h[n:] |
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525 if len(d) < n: |
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526 d += readexactly(self._fh, n - len(d)) |
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527 return d |
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528 return readexactly(self._fh, n) |
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529 |
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530 def _moddirs(files): |
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531 """Given a set of modified files, find the list of modified directories. |
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532 |
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533 This returns a list of (path to changed dir, changed dir) tuples, |
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|
534 as that's what the one client needs anyway. |
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|
535 |
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536 >>> _moddirs(['a/b/c.py', 'a/b/c.txt', 'a/d/e/f/g.txt', 'i.txt', ]) |
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|
537 [('/', 'a/'), ('a/', 'b/'), ('a/', 'd/'), ('a/d/', 'e/'), ('a/d/e/', 'f/')] |
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|
538 |
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|
539 """ |
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|
540 alldirs = set() |
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|
541 for f in files: |
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542 path = f.split('/')[:-1] |
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543 for i in xrange(len(path) - 1, -1, -1): |
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544 dn = '/'.join(path[:i]) |
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545 current = dn + '/', path[i] + '/' |
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546 if current in alldirs: |
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|
547 break |
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548 alldirs.add(current) |
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549 return sorted(alldirs) |
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550 |
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551 class cg1packer(object): |
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|
552 deltaheader = _CHANGEGROUPV1_DELTA_HEADER |
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diff
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|
553 version = '01' |
19202
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changeset
|
554 def __init__(self, repo, bundlecaps=None): |
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555 """Given a source repo, construct a bundler. |
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556 |
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557 bundlecaps is optional and can be used to specify the set of |
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558 capabilities which can be used to build the bundle. |
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559 """ |
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560 # Set of capabilities we can use to build the bundle. |
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561 if bundlecaps is None: |
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562 bundlecaps = set() |
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563 self._bundlecaps = bundlecaps |
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564 # experimental config: bundle.reorder |
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565 reorder = repo.ui.config('bundle', 'reorder', 'auto') |
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566 if reorder == 'auto': |
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567 reorder = None |
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568 else: |
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569 reorder = util.parsebool(reorder) |
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570 self._repo = repo |
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571 self._reorder = reorder |
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572 self._progress = repo.ui.progress |
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573 if self._repo.ui.verbose and not self._repo.ui.debugflag: |
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574 self._verbosenote = self._repo.ui.note |
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575 else: |
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576 self._verbosenote = lambda s: None |
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577 |
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578 def close(self): |
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579 return closechunk() |
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580 |
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581 def fileheader(self, fname): |
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582 return chunkheader(len(fname)) + fname |
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583 |
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584 def group(self, nodelist, revlog, lookup, units=None): |
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585 """Calculate a delta group, yielding a sequence of changegroup chunks |
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586 (strings). |
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587 |
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588 Given a list of changeset revs, return a set of deltas and |
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589 metadata corresponding to nodes. The first delta is |
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590 first parent(nodelist[0]) -> nodelist[0], the receiver is |
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591 guaranteed to have this parent as it has all history before |
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592 these changesets. In the case firstparent is nullrev the |
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593 changegroup starts with a full revision. |
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594 |
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595 If units is not None, progress detail will be generated, units specifies |
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596 the type of revlog that is touched (changelog, manifest, etc.). |
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597 """ |
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598 # if we don't have any revisions touched by these changesets, bail |
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599 if len(nodelist) == 0: |
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600 yield self.close() |
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601 return |
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602 |
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603 # for generaldelta revlogs, we linearize the revs; this will both be |
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604 # much quicker and generate a much smaller bundle |
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605 if (revlog._generaldelta and self._reorder is None) or self._reorder: |
19200
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606 dag = dagutil.revlogdag(revlog) |
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607 revs = set(revlog.rev(n) for n in nodelist) |
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608 revs = dag.linearize(revs) |
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609 else: |
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610 revs = sorted([revlog.rev(n) for n in nodelist]) |
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611 |
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612 # add the parent of the first rev |
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613 p = revlog.parentrevs(revs[0])[0] |
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614 revs.insert(0, p) |
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615 |
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616 # build deltas |
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617 total = len(revs) - 1 |
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618 msgbundling = _('bundling') |
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619 for r in xrange(len(revs) - 1): |
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620 if units is not None: |
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621 self._progress(msgbundling, r + 1, unit=units, total=total) |
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622 prev, curr = revs[r], revs[r + 1] |
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|
623 linknode = lookup(revlog.node(curr)) |
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624 for c in self.revchunk(revlog, curr, prev, linknode): |
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625 yield c |
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|
626 |
24901
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changeset
|
627 if units is not None: |
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|
628 self._progress(msgbundling, None) |
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629 yield self.close() |
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|
630 |
19289
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Durham Goode <durham@fb.com>
parents:
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changeset
|
631 # filter any nodes that claim to be part of the known set |
24896
9183cb6886ef
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changeset
|
632 def prune(self, revlog, missing, commonrevs): |
19289
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633 rr, rl = revlog.rev, revlog.linkrev |
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634 return [n for n in missing if rl(rr(n)) not in commonrevs] |
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|
635 |
27432
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|
636 def _packmanifests(self, mfnodes, tmfnodes, lookuplinknode): |
26711
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|
637 """Pack flat manifests into a changegroup stream.""" |
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|
638 ml = self._repo.manifest |
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|
639 size = 0 |
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|
640 for chunk in self.group( |
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|
641 mfnodes, ml, lookuplinknode, units=_('manifests')): |
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|
642 size += len(chunk) |
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|
643 yield chunk |
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|
644 self._verbosenote(_('%8.i (manifests)\n') % size) |
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645 # It looks odd to assert this here, but tmfnodes doesn't get |
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|
646 # filled in until after we've called lookuplinknode for |
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647 # sending root manifests, so the only way to tell the streams |
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648 # got crossed is to check after we've done all the work. |
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|
649 assert not tmfnodes |
26711
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diff
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|
650 |
19204
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changeset
|
651 def generate(self, commonrevs, clnodes, fastpathlinkrev, source): |
19202
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|
652 '''yield a sequence of changegroup chunks (strings)''' |
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|
653 repo = self._repo |
24978
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parents:
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diff
changeset
|
654 cl = repo.changelog |
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changeset
|
655 ml = repo.manifest |
19204
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diff
changeset
|
656 |
23381
cc0ff93d0c0c
changegroup: fix file linkrevs during reorders (issue4462)
Durham Goode <durham@fb.com>
parents:
23226
diff
changeset
|
657 clrevorder = {} |
19204
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|
658 mfs = {} # needed manifests |
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changeset
|
659 tmfnodes = {} |
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|
660 fnodes = {} # needed file nodes |
27237
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27219
diff
changeset
|
661 # maps manifest node id -> set(changed files) |
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changeset
|
662 mfchangedfiles = {} |
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|
663 |
19207
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changeset
|
664 # Callback for the changelog, used to collect changed files and manifest |
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changeset
|
665 # nodes. |
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666 # Returns the linkrev node (identity in the changelog case). |
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667 def lookupcl(x): |
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668 c = cl.read(x) |
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669 clrevorder[x] = len(clrevorder) |
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670 n = c[0] |
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671 # record the first changeset introducing this manifest version |
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672 mfs.setdefault(n, x) |
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673 # Record a complete list of potentially-changed files in |
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674 # this manifest. |
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675 mfchangedfiles.setdefault(n, set()).update(c[3]) |
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676 return x |
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677 |
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678 self._verbosenote(_('uncompressed size of bundle content:\n')) |
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679 size = 0 |
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680 for chunk in self.group(clnodes, cl, lookupcl, units=_('changesets')): |
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681 size += len(chunk) |
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682 yield chunk |
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683 self._verbosenote(_('%8.i (changelog)\n') % size) |
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684 |
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685 # We need to make sure that the linkrev in the changegroup refers to |
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686 # the first changeset that introduced the manifest or file revision. |
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687 # The fastpath is usually safer than the slowpath, because the filelogs |
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688 # are walked in revlog order. |
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689 # |
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690 # When taking the slowpath with reorder=None and the manifest revlog |
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691 # uses generaldelta, the manifest may be walked in the "wrong" order. |
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692 # Without 'clrevorder', we would get an incorrect linkrev (see fix in |
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693 # cc0ff93d0c0c). |
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694 # |
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695 # When taking the fastpath, we are only vulnerable to reordering |
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696 # of the changelog itself. The changelog never uses generaldelta, so |
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697 # it is only reordered when reorder=True. To handle this case, we |
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698 # simply take the slowpath, which already has the 'clrevorder' logic. |
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699 # This was also fixed in cc0ff93d0c0c. |
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700 fastpathlinkrev = fastpathlinkrev and not self._reorder |
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701 # Treemanifests don't work correctly with fastpathlinkrev |
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702 # either, because we don't discover which directory nodes to |
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703 # send along with files. This could probably be fixed. |
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704 fastpathlinkrev = fastpathlinkrev and ( |
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705 'treemanifest' not in repo.requirements) |
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706 # Callback for the manifest, used to collect linkrevs for filelog |
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707 # revisions. |
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708 # Returns the linkrev node (collected in lookupcl). |
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709 if fastpathlinkrev: |
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710 lookupmflinknode = mfs.__getitem__ |
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711 else: |
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712 def lookupmflinknode(x): |
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713 """Callback for looking up the linknode for manifests. |
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714 |
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715 Returns the linkrev node for the specified manifest. |
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|
716 |
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|
717 SIDE EFFECT: |
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|
718 |
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719 1) fclnodes gets populated with the list of relevant |
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720 file nodes if we're not using fastpathlinkrev |
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721 2) When treemanifests are in use, collects treemanifest nodes |
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|
722 to send |
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|
723 |
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724 Note that this means manifests must be completely sent to |
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725 the client before you can trust the list of files and |
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|
726 treemanifests to send. |
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727 """ |
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|
728 clnode = mfs[x] |
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729 # We no longer actually care about reading deltas of |
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730 # the manifest here, because we already know the list |
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731 # of changed files, so for treemanifests (which |
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732 # lazily-load anyway to *generate* a readdelta) we can |
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733 # just load them with read() and then we'll actually |
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734 # be able to correctly load node IDs from the |
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735 # submanifest entries. |
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|
736 if 'treemanifest' in repo.requirements: |
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|
737 mdata = ml.read(x) |
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738 else: |
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739 mdata = ml.readfast(x) |
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740 for f in mfchangedfiles[x]: |
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|
741 try: |
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|
742 n = mdata[f] |
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743 except KeyError: |
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744 continue |
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745 # record the first changeset introducing this filelog |
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|
746 # version |
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747 fclnodes = fnodes.setdefault(f, {}) |
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|
748 fclnode = fclnodes.setdefault(n, clnode) |
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749 if clrevorder[clnode] < clrevorder[fclnode]: |
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|
750 fclnodes[n] = clnode |
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|
751 # gather list of changed treemanifest nodes |
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752 if 'treemanifest' in repo.requirements: |
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|
753 submfs = {'/': mdata} |
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|
754 for dn, bn in _moddirs(mfchangedfiles[x]): |
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|
755 submf = submfs[dn] |
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|
756 submf = submf._dirs[bn] |
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|
757 submfs[submf.dir()] = submf |
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|
758 tmfclnodes = tmfnodes.setdefault(submf.dir(), {}) |
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|
759 tmfclnodes.setdefault(submf._node, clnode) |
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|
760 if clrevorder[clnode] < clrevorder[fclnode]: |
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|
761 tmfclnodes[n] = clnode |
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|
762 return clnode |
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|
763 |
24899
cf1ea7566b20
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Martin von Zweigbergk <martinvonz@google.com>
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|
764 mfnodes = self.prune(ml, mfs, commonrevs) |
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765 for x in self._packmanifests( |
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|
766 mfnodes, tmfnodes, lookupmflinknode): |
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|
767 yield x |
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|
768 |
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|
769 mfs.clear() |
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|
770 clrevs = set(cl.rev(x) for x in clnodes) |
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|
771 |
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|
772 if not fastpathlinkrev: |
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|
773 def linknodes(unused, fname): |
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|
774 return fnodes.get(fname, {}) |
94a3d6fdc315
changegroup: clean up file lookup function
Augie Fackler <augie@google.com>
parents:
27239
diff
changeset
|
775 else: |
27241
ead8e7069998
changegroup: restate file linknode callback using generator expressions
Augie Fackler <augie@google.com>
parents:
27240
diff
changeset
|
776 cln = cl.node |
27240
94a3d6fdc315
changegroup: clean up file lookup function
Augie Fackler <augie@google.com>
parents:
27239
diff
changeset
|
777 def linknodes(filerevlog, fname): |
20936
bfb40168391c
changegroup: remove unused variable caught by pyflakes
Sean Farley <sean.michael.farley@gmail.com>
parents:
19708
diff
changeset
|
778 llr = filerevlog.linkrev |
27241
ead8e7069998
changegroup: restate file linknode callback using generator expressions
Augie Fackler <augie@google.com>
parents:
27240
diff
changeset
|
779 fln = filerevlog.node |
ead8e7069998
changegroup: restate file linknode callback using generator expressions
Augie Fackler <augie@google.com>
parents:
27240
diff
changeset
|
780 revs = ((r, llr(r)) for r in filerevlog) |
ead8e7069998
changegroup: restate file linknode callback using generator expressions
Augie Fackler <augie@google.com>
parents:
27240
diff
changeset
|
781 return dict((fln(r), cln(lr)) for r, lr in revs if lr in clrevs) |
19207
a67e1380dfbd
bundle-ng: simplify lookup and state handling
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
19206
diff
changeset
|
782 |
27237
c08814b48ae5
changegroup: avoid iterating the whole manifest
Augie Fackler <augie@google.com>
parents:
27219
diff
changeset
|
783 changedfiles = set() |
c08814b48ae5
changegroup: avoid iterating the whole manifest
Augie Fackler <augie@google.com>
parents:
27219
diff
changeset
|
784 for x in mfchangedfiles.itervalues(): |
c08814b48ae5
changegroup: avoid iterating the whole manifest
Augie Fackler <augie@google.com>
parents:
27219
diff
changeset
|
785 changedfiles.update(x) |
19334
95a49112e7ab
bundle: move file chunk generation to it's own function
Durham Goode <durham@fb.com>
parents:
19325
diff
changeset
|
786 for chunk in self.generatefiles(changedfiles, linknodes, commonrevs, |
95a49112e7ab
bundle: move file chunk generation to it's own function
Durham Goode <durham@fb.com>
parents:
19325
diff
changeset
|
787 source): |
95a49112e7ab
bundle: move file chunk generation to it's own function
Durham Goode <durham@fb.com>
parents:
19325
diff
changeset
|
788 yield chunk |
95a49112e7ab
bundle: move file chunk generation to it's own function
Durham Goode <durham@fb.com>
parents:
19325
diff
changeset
|
789 |
95a49112e7ab
bundle: move file chunk generation to it's own function
Durham Goode <durham@fb.com>
parents:
19325
diff
changeset
|
790 yield self.close() |
95a49112e7ab
bundle: move file chunk generation to it's own function
Durham Goode <durham@fb.com>
parents:
19325
diff
changeset
|
791 |
95a49112e7ab
bundle: move file chunk generation to it's own function
Durham Goode <durham@fb.com>
parents:
19325
diff
changeset
|
792 if clnodes: |
95a49112e7ab
bundle: move file chunk generation to it's own function
Durham Goode <durham@fb.com>
parents:
19325
diff
changeset
|
793 repo.hook('outgoing', node=hex(clnodes[0]), source=source) |
95a49112e7ab
bundle: move file chunk generation to it's own function
Durham Goode <durham@fb.com>
parents:
19325
diff
changeset
|
794 |
24897
5c35a6040352
changegroup: document that 'source' parameter exists for extensions
Martin von Zweigbergk <martinvonz@google.com>
parents:
24896
diff
changeset
|
795 # The 'source' parameter is useful for extensions |
19334
95a49112e7ab
bundle: move file chunk generation to it's own function
Durham Goode <durham@fb.com>
parents:
19325
diff
changeset
|
796 def generatefiles(self, changedfiles, linknodes, commonrevs, source): |
95a49112e7ab
bundle: move file chunk generation to it's own function
Durham Goode <durham@fb.com>
parents:
19325
diff
changeset
|
797 repo = self._repo |
95a49112e7ab
bundle: move file chunk generation to it's own function
Durham Goode <durham@fb.com>
parents:
19325
diff
changeset
|
798 progress = self._progress |
95a49112e7ab
bundle: move file chunk generation to it's own function
Durham Goode <durham@fb.com>
parents:
19325
diff
changeset
|
799 msgbundling = _('bundling') |
95a49112e7ab
bundle: move file chunk generation to it's own function
Durham Goode <durham@fb.com>
parents:
19325
diff
changeset
|
800 |
95a49112e7ab
bundle: move file chunk generation to it's own function
Durham Goode <durham@fb.com>
parents:
19325
diff
changeset
|
801 total = len(changedfiles) |
95a49112e7ab
bundle: move file chunk generation to it's own function
Durham Goode <durham@fb.com>
parents:
19325
diff
changeset
|
802 # for progress output |
95a49112e7ab
bundle: move file chunk generation to it's own function
Durham Goode <durham@fb.com>
parents:
19325
diff
changeset
|
803 msgfiles = _('files') |
95a49112e7ab
bundle: move file chunk generation to it's own function
Durham Goode <durham@fb.com>
parents:
19325
diff
changeset
|
804 for i, fname in enumerate(sorted(changedfiles)): |
95a49112e7ab
bundle: move file chunk generation to it's own function
Durham Goode <durham@fb.com>
parents:
19325
diff
changeset
|
805 filerevlog = repo.file(fname) |
95a49112e7ab
bundle: move file chunk generation to it's own function
Durham Goode <durham@fb.com>
parents:
19325
diff
changeset
|
806 if not filerevlog: |
26587
56b2bcea2529
error: get Abort from 'error' instead of 'util'
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
26540
diff
changeset
|
807 raise error.Abort(_("empty or missing revlog for %s") % fname) |
19334
95a49112e7ab
bundle: move file chunk generation to it's own function
Durham Goode <durham@fb.com>
parents:
19325
diff
changeset
|
808 |
95a49112e7ab
bundle: move file chunk generation to it's own function
Durham Goode <durham@fb.com>
parents:
19325
diff
changeset
|
809 linkrevnodes = linknodes(filerevlog, fname) |
19207
a67e1380dfbd
bundle-ng: simplify lookup and state handling
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
19206
diff
changeset
|
810 # Lookup for filenodes, we collected the linkrev nodes above in the |
a67e1380dfbd
bundle-ng: simplify lookup and state handling
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
19206
diff
changeset
|
811 # fastpath case and with lookupmf in the slowpath case. |
a67e1380dfbd
bundle-ng: simplify lookup and state handling
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
19206
diff
changeset
|
812 def lookupfilelog(x): |
a67e1380dfbd
bundle-ng: simplify lookup and state handling
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
19206
diff
changeset
|
813 return linkrevnodes[x] |
a67e1380dfbd
bundle-ng: simplify lookup and state handling
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
19206
diff
changeset
|
814 |
24896
9183cb6886ef
changegroup: removed unused 'source' parameter from prune()
Martin von Zweigbergk <martinvonz@google.com>
parents:
24717
diff
changeset
|
815 filenodes = self.prune(filerevlog, linkrevnodes, commonrevs) |
19206
6308896b1d4a
bundle-ng: simplify bundle10.generate
Sune Foldager <cryo@cyanite.org>
parents:
19204
diff
changeset
|
816 if filenodes: |
19208
0b564cf359a7
bundle-ng: move progress handling out of the linkrev callback
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
19207
diff
changeset
|
817 progress(msgbundling, i + 1, item=fname, unit=msgfiles, |
0b564cf359a7
bundle-ng: move progress handling out of the linkrev callback
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
19207
diff
changeset
|
818 total=total) |
23748
4ab66de46a96
bundle: when verbose, show what takes up the space in the generated bundle
Mads Kiilerich <madski@unity3d.com>
parents:
23382
diff
changeset
|
819 h = self.fileheader(fname) |
4ab66de46a96
bundle: when verbose, show what takes up the space in the generated bundle
Mads Kiilerich <madski@unity3d.com>
parents:
23382
diff
changeset
|
820 size = len(h) |
4ab66de46a96
bundle: when verbose, show what takes up the space in the generated bundle
Mads Kiilerich <madski@unity3d.com>
parents:
23382
diff
changeset
|
821 yield h |
24912
e285b98c65cc
changegroup.group: drop 'reorder' parameter
Martin von Zweigbergk <martinvonz@google.com>
parents:
24911
diff
changeset
|
822 for chunk in self.group(filenodes, filerevlog, lookupfilelog): |
23748
4ab66de46a96
bundle: when verbose, show what takes up the space in the generated bundle
Mads Kiilerich <madski@unity3d.com>
parents:
23382
diff
changeset
|
823 size += len(chunk) |
19202
0455fc94ae00
bundle-ng: move gengroup into bundler, pass repo object to bundler
Sune Foldager <cryo@cyanite.org>
parents:
19201
diff
changeset
|
824 yield chunk |
23748
4ab66de46a96
bundle: when verbose, show what takes up the space in the generated bundle
Mads Kiilerich <madski@unity3d.com>
parents:
23382
diff
changeset
|
825 self._verbosenote(_('%8.i %s\n') % (size, fname)) |
24901
e9edd53770fb
changegroup: close progress in same function as it's started
Martin von Zweigbergk <martinvonz@google.com>
parents:
24900
diff
changeset
|
826 progress(msgbundling, None) |
19200
4cfdec944edf
bundle-ng: move group into the bundler
Sune Foldager <cryo@cyanite.org>
parents:
19199
diff
changeset
|
827 |
23181
832b7ef275c8
changegroup: introduce cg2packer/unpacker
Sune Foldager <cryo@cyanite.org>
parents:
23178
diff
changeset
|
828 def deltaparent(self, revlog, rev, p1, p2, prev): |
832b7ef275c8
changegroup: introduce cg2packer/unpacker
Sune Foldager <cryo@cyanite.org>
parents:
23178
diff
changeset
|
829 return prev |
832b7ef275c8
changegroup: introduce cg2packer/unpacker
Sune Foldager <cryo@cyanite.org>
parents:
23178
diff
changeset
|
830 |
19207
a67e1380dfbd
bundle-ng: simplify lookup and state handling
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
19206
diff
changeset
|
831 def revchunk(self, revlog, rev, prev, linknode): |
14143
da635d3c5620
changegroup: new bundler API
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
14141
diff
changeset
|
832 node = revlog.node(rev) |
da635d3c5620
changegroup: new bundler API
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
14141
diff
changeset
|
833 p1, p2 = revlog.parentrevs(rev) |
23181
832b7ef275c8
changegroup: introduce cg2packer/unpacker
Sune Foldager <cryo@cyanite.org>
parents:
23178
diff
changeset
|
834 base = self.deltaparent(revlog, rev, p1, p2, prev) |
14143
da635d3c5620
changegroup: new bundler API
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
14141
diff
changeset
|
835 |
da635d3c5620
changegroup: new bundler API
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
14141
diff
changeset
|
836 prefix = '' |
24190
903c7e8c97ad
changegroup: emit full-replacement deltas if either revision is censored
Mike Edgar <adgar@google.com>
parents:
24180
diff
changeset
|
837 if revlog.iscensored(base) or revlog.iscensored(rev): |
903c7e8c97ad
changegroup: emit full-replacement deltas if either revision is censored
Mike Edgar <adgar@google.com>
parents:
24180
diff
changeset
|
838 try: |
903c7e8c97ad
changegroup: emit full-replacement deltas if either revision is censored
Mike Edgar <adgar@google.com>
parents:
24180
diff
changeset
|
839 delta = revlog.revision(node) |
25660
328739ea70c3
global: mass rewrite to use modern exception syntax
Gregory Szorc <gregory.szorc@gmail.com>
parents:
25624
diff
changeset
|
840 except error.CensoredNodeError as e: |
24190
903c7e8c97ad
changegroup: emit full-replacement deltas if either revision is censored
Mike Edgar <adgar@google.com>
parents:
24180
diff
changeset
|
841 delta = e.tombstone |
903c7e8c97ad
changegroup: emit full-replacement deltas if either revision is censored
Mike Edgar <adgar@google.com>
parents:
24180
diff
changeset
|
842 if base == nullrev: |
903c7e8c97ad
changegroup: emit full-replacement deltas if either revision is censored
Mike Edgar <adgar@google.com>
parents:
24180
diff
changeset
|
843 prefix = mdiff.trivialdiffheader(len(delta)) |
903c7e8c97ad
changegroup: emit full-replacement deltas if either revision is censored
Mike Edgar <adgar@google.com>
parents:
24180
diff
changeset
|
844 else: |
903c7e8c97ad
changegroup: emit full-replacement deltas if either revision is censored
Mike Edgar <adgar@google.com>
parents:
24180
diff
changeset
|
845 baselen = revlog.rawsize(base) |
903c7e8c97ad
changegroup: emit full-replacement deltas if either revision is censored
Mike Edgar <adgar@google.com>
parents:
24180
diff
changeset
|
846 prefix = mdiff.replacediffheader(baselen, len(delta)) |
903c7e8c97ad
changegroup: emit full-replacement deltas if either revision is censored
Mike Edgar <adgar@google.com>
parents:
24180
diff
changeset
|
847 elif base == nullrev: |
14143
da635d3c5620
changegroup: new bundler API
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
14141
diff
changeset
|
848 delta = revlog.revision(node) |
da635d3c5620
changegroup: new bundler API
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
14141
diff
changeset
|
849 prefix = mdiff.trivialdiffheader(len(delta)) |
da635d3c5620
changegroup: new bundler API
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
14141
diff
changeset
|
850 else: |
da635d3c5620
changegroup: new bundler API
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
14141
diff
changeset
|
851 delta = revlog.revdiff(base, rev) |
da635d3c5620
changegroup: new bundler API
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
14141
diff
changeset
|
852 p1n, p2n = revlog.parents(node) |
da635d3c5620
changegroup: new bundler API
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
14141
diff
changeset
|
853 basenode = revlog.node(base) |
27433
12f727a5b434
changegroup: add flags field to cg3 delta header
Mike Edgar <adgar@google.com>
parents:
27432
diff
changeset
|
854 flags = revlog.flags(rev) |
12f727a5b434
changegroup: add flags field to cg3 delta header
Mike Edgar <adgar@google.com>
parents:
27432
diff
changeset
|
855 meta = self.builddeltaheader(node, p1n, p2n, basenode, linknode, flags) |
14143
da635d3c5620
changegroup: new bundler API
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
14141
diff
changeset
|
856 meta += prefix |
da635d3c5620
changegroup: new bundler API
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
14141
diff
changeset
|
857 l = len(meta) + len(delta) |
13831
d69c9510d648
changegroup: introduce bundler objects
Matt Mackall <mpm@selenic.com>
parents:
13786
diff
changeset
|
858 yield chunkheader(l) |
d69c9510d648
changegroup: introduce bundler objects
Matt Mackall <mpm@selenic.com>
parents:
13786
diff
changeset
|
859 yield meta |
14143
da635d3c5620
changegroup: new bundler API
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
14141
diff
changeset
|
860 yield delta |
27433
12f727a5b434
changegroup: add flags field to cg3 delta header
Mike Edgar <adgar@google.com>
parents:
27432
diff
changeset
|
861 def builddeltaheader(self, node, p1n, p2n, basenode, linknode, flags): |
14143
da635d3c5620
changegroup: new bundler API
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
14141
diff
changeset
|
862 # do nothing with basenode, it is implicitly the previous one in HG10 |
27433
12f727a5b434
changegroup: add flags field to cg3 delta header
Mike Edgar <adgar@google.com>
parents:
27432
diff
changeset
|
863 # do nothing with flags, it is implicitly 0 for cg1 and cg2 |
14143
da635d3c5620
changegroup: new bundler API
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
14141
diff
changeset
|
864 return struct.pack(self.deltaheader, node, p1n, p2n, linknode) |
20925
5174c48ed8d8
localrepo: move the _changegroupsubset method in changegroup module
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
20675
diff
changeset
|
865 |
23181
832b7ef275c8
changegroup: introduce cg2packer/unpacker
Sune Foldager <cryo@cyanite.org>
parents:
23178
diff
changeset
|
866 class cg2packer(cg1packer): |
23896
becfecaf9087
changegroup.writebundle: HG2Y support
Eric Sumner <ericsumner@fb.com>
parents:
23895
diff
changeset
|
867 version = '02' |
23181
832b7ef275c8
changegroup: introduce cg2packer/unpacker
Sune Foldager <cryo@cyanite.org>
parents:
23178
diff
changeset
|
868 deltaheader = _CHANGEGROUPV2_DELTA_HEADER |
832b7ef275c8
changegroup: introduce cg2packer/unpacker
Sune Foldager <cryo@cyanite.org>
parents:
23178
diff
changeset
|
869 |
24911
5447b8523fef
cg2packer: set reorder=False in __init__ instead of in group()
Martin von Zweigbergk <martinvonz@google.com>
parents:
24910
diff
changeset
|
870 def __init__(self, repo, bundlecaps=None): |
5447b8523fef
cg2packer: set reorder=False in __init__ instead of in group()
Martin von Zweigbergk <martinvonz@google.com>
parents:
24910
diff
changeset
|
871 super(cg2packer, self).__init__(repo, bundlecaps) |
5447b8523fef
cg2packer: set reorder=False in __init__ instead of in group()
Martin von Zweigbergk <martinvonz@google.com>
parents:
24910
diff
changeset
|
872 if self._reorder is None: |
5447b8523fef
cg2packer: set reorder=False in __init__ instead of in group()
Martin von Zweigbergk <martinvonz@google.com>
parents:
24910
diff
changeset
|
873 # Since generaldelta is directly supported by cg2, reordering |
5447b8523fef
cg2packer: set reorder=False in __init__ instead of in group()
Martin von Zweigbergk <martinvonz@google.com>
parents:
24910
diff
changeset
|
874 # generally doesn't help, so we disable it by default (treating |
5447b8523fef
cg2packer: set reorder=False in __init__ instead of in group()
Martin von Zweigbergk <martinvonz@google.com>
parents:
24910
diff
changeset
|
875 # bundle.reorder=auto just like bundle.reorder=False). |
5447b8523fef
cg2packer: set reorder=False in __init__ instead of in group()
Martin von Zweigbergk <martinvonz@google.com>
parents:
24910
diff
changeset
|
876 self._reorder = False |
23181
832b7ef275c8
changegroup: introduce cg2packer/unpacker
Sune Foldager <cryo@cyanite.org>
parents:
23178
diff
changeset
|
877 |
832b7ef275c8
changegroup: introduce cg2packer/unpacker
Sune Foldager <cryo@cyanite.org>
parents:
23178
diff
changeset
|
878 def deltaparent(self, revlog, rev, p1, p2, prev): |
832b7ef275c8
changegroup: introduce cg2packer/unpacker
Sune Foldager <cryo@cyanite.org>
parents:
23178
diff
changeset
|
879 dp = revlog.deltaparent(rev) |
832b7ef275c8
changegroup: introduce cg2packer/unpacker
Sune Foldager <cryo@cyanite.org>
parents:
23178
diff
changeset
|
880 # avoid storing full revisions; pick prev in those cases |
832b7ef275c8
changegroup: introduce cg2packer/unpacker
Sune Foldager <cryo@cyanite.org>
parents:
23178
diff
changeset
|
881 # also pick prev when we can't be sure remote has dp |
832b7ef275c8
changegroup: introduce cg2packer/unpacker
Sune Foldager <cryo@cyanite.org>
parents:
23178
diff
changeset
|
882 if dp == nullrev or (dp != p1 and dp != p2 and dp != prev): |
832b7ef275c8
changegroup: introduce cg2packer/unpacker
Sune Foldager <cryo@cyanite.org>
parents:
23178
diff
changeset
|
883 return prev |
832b7ef275c8
changegroup: introduce cg2packer/unpacker
Sune Foldager <cryo@cyanite.org>
parents:
23178
diff
changeset
|
884 return dp |
832b7ef275c8
changegroup: introduce cg2packer/unpacker
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|
885 |
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|
886 def builddeltaheader(self, node, p1n, p2n, basenode, linknode, flags): |
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|
887 # Do nothing with flags, it is implicitly 0 in cg1 and cg2 |
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888 return struct.pack(self.deltaheader, node, p1n, p2n, basenode, linknode) |
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|
889 |
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|
890 class cg3packer(cg2packer): |
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891 version = '03' |
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|
892 deltaheader = _CHANGEGROUPV3_DELTA_HEADER |
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|
893 |
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|
894 def _packmanifests(self, mfnodes, tmfnodes, lookuplinknode): |
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|
895 # Note that debug prints are super confusing in this code, as |
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diff
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|
896 # tmfnodes gets populated by the calls to lookuplinknode in |
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|
897 # the superclass's manifest packer. In the future we should |
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|
898 # probably see if we can refactor this somehow to be less |
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|
899 # confusing. |
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|
900 for x in super(cg3packer, self)._packmanifests( |
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|
901 mfnodes, {}, lookuplinknode): |
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|
902 yield x |
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|
903 dirlog = self._repo.manifest.dirlog |
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Augie Fackler <augie@google.com>
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diff
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|
904 for name, nodes in tmfnodes.iteritems(): |
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|
905 # For now, directory headers are simply file headers with |
27691
b0d23a55f91e
changegroup: don't add a second trailing '/' in dir name
Martin von Zweigbergk <martinvonz@google.com>
parents:
27690
diff
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|
906 # a trailing '/' on the path (already in the name). |
b0d23a55f91e
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Martin von Zweigbergk <martinvonz@google.com>
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diff
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|
907 yield self.fileheader(name) |
27432
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|
908 for chunk in self.group(nodes, dirlog(name), nodes.get): |
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|
909 yield chunk |
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|
910 |
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|
911 def builddeltaheader(self, node, p1n, p2n, basenode, linknode, flags): |
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|
912 return struct.pack( |
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diff
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|
913 self.deltaheader, node, p1n, p2n, basenode, linknode, flags) |
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|
914 |
23181
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|
915 packermap = {'01': (cg1packer, cg1unpacker), |
26709
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Augie Fackler <augie@google.com>
parents:
26708
diff
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|
916 # cg2 adds support for exchanging generaldelta |
42733e956887
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diff
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|
917 '02': (cg2packer, cg2unpacker), |
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|
918 # cg3 adds support for exchanging treemanifests |
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|
919 '03': (cg3packer, cg3unpacker), |
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diff
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|
920 } |
23168
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Pierre-Yves David <pierre-yves.david@fb.com>
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22971
diff
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|
921 |
20926
7c1ed40e3325
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20925
diff
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|
922 def _changegroupinfo(repo, nodes, source): |
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20925
diff
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|
923 if repo.ui.verbose or source == 'bundle': |
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|
924 repo.ui.status(_("%d changesets found\n") % len(nodes)) |
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diff
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|
925 if repo.ui.debugflag: |
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diff
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|
926 repo.ui.debug("list of changesets:\n") |
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20925
diff
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|
927 for node in nodes: |
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20925
diff
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|
928 repo.ui.debug("%s\n" % hex(node)) |
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|
929 |
23177
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|
930 def getsubsetraw(repo, outgoing, bundler, source, fastpath=False): |
20925
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diff
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|
931 repo = repo.unfiltered() |
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diff
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|
932 commonrevs = outgoing.common |
5174c48ed8d8
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diff
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|
933 csets = outgoing.missing |
5174c48ed8d8
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diff
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|
934 heads = outgoing.missingheads |
5174c48ed8d8
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diff
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|
935 # We go through the fast path if we get told to, or if all (unfiltered |
5174c48ed8d8
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diff
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|
936 # heads have been requested (since we then know there all linkrevs will |
5174c48ed8d8
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20675
diff
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|
937 # be pulled by the client). |
5174c48ed8d8
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20675
diff
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|
938 heads.sort() |
5174c48ed8d8
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diff
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|
939 fastpathlinkrev = fastpath or ( |
5174c48ed8d8
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diff
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|
940 repo.filtername is None and heads == sorted(repo.heads())) |
5174c48ed8d8
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diff
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|
941 |
5174c48ed8d8
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diff
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|
942 repo.hook('preoutgoing', throw=True, source=source) |
20926
7c1ed40e3325
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20925
diff
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|
943 _changegroupinfo(repo, csets, source) |
23177
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|
944 return bundler.generate(commonrevs, csets, fastpathlinkrev, source) |
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|
945 |
26595
be0489770925
getsubset: get the unpacker version from the bundler
Pierre-Yves David <pierre-yves.david@fb.com>
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26587
diff
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|
946 def getsubset(repo, outgoing, bundler, source, fastpath=False): |
23177
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Sune Foldager <cryo@cyanite.org>
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|
947 gengroup = getsubsetraw(repo, outgoing, bundler, source, fastpath) |
26595
be0489770925
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Pierre-Yves David <pierre-yves.david@fb.com>
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26587
diff
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|
948 return packermap[bundler.version][1](util.chunkbuffer(gengroup), None) |
20927
24a443948627
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Pierre-Yves David <pierre-yves.david@fb.com>
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diff
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|
949 |
23897
f99a6e1865e5
changegroup.getsubset: support multiple versions
Eric Sumner <ericsumner@fb.com>
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23896
diff
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|
950 def changegroupsubset(repo, roots, heads, source, version='01'): |
20927
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20926
diff
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|
951 """Compute a changegroup consisting of all the nodes that are |
24a443948627
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20926
diff
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|
952 descendants of any of the roots and ancestors of any of the heads. |
24a443948627
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20926
diff
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|
953 Return a chunkbuffer object whose read() method will return |
24a443948627
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20926
diff
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|
954 successive changegroup chunks. |
24a443948627
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20926
diff
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|
955 |
24a443948627
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20926
diff
changeset
|
956 It is fairly complex as determining which filenodes and which |
24a443948627
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parents:
20926
diff
changeset
|
957 manifest nodes need to be included for the changeset to be complete |
24a443948627
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20926
diff
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|
958 is non-trivial. |
24a443948627
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20926
diff
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|
959 |
24a443948627
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20926
diff
changeset
|
960 Another wrinkle is doing the reverse, figuring out which changeset in |
24a443948627
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parents:
20926
diff
changeset
|
961 the changegroup a particular filenode or manifestnode belongs to. |
24a443948627
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diff
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|
962 """ |
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20926
diff
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|
963 cl = repo.changelog |
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diff
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|
964 if not roots: |
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20926
diff
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|
965 roots = [nullid] |
24a443948627
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diff
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|
966 discbases = [] |
24a443948627
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diff
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|
967 for n in roots: |
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diff
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|
968 discbases.extend([p for p in cl.parents(n) if p != nullid]) |
25677
af5b2f4ed594
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Pierre-Yves David <pierre-yves.david@fb.com>
parents:
24717
diff
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|
969 # TODO: remove call to nodesbetween. |
af5b2f4ed594
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24717
diff
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|
970 csets, roots, heads = cl.nodesbetween(roots, heads) |
af5b2f4ed594
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24717
diff
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|
971 included = set(csets) |
af5b2f4ed594
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Pierre-Yves David <pierre-yves.david@fb.com>
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24717
diff
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|
972 discbases = [n for n in discbases if n not in included] |
20927
24a443948627
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20926
diff
changeset
|
973 outgoing = discovery.outgoing(cl, discbases, heads) |
23897
f99a6e1865e5
changegroup.getsubset: support multiple versions
Eric Sumner <ericsumner@fb.com>
parents:
23896
diff
changeset
|
974 bundler = packermap[version][0](repo) |
26595
be0489770925
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26587
diff
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|
975 return getsubset(repo, outgoing, bundler, source) |
20927
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diff
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|
976 |
23178
5e895ed5e955
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Sune Foldager <cryo@cyanite.org>
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23177
diff
changeset
|
977 def getlocalchangegroupraw(repo, source, outgoing, bundlecaps=None, |
5e895ed5e955
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Sune Foldager <cryo@cyanite.org>
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diff
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|
978 version='01'): |
23177
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|
979 """Like getbundle, but taking a discovery.outgoing as an argument. |
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|
980 |
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|
981 This is only implemented for local repos and reuses potentially |
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diff
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|
982 precomputed sets in outgoing. Returns a raw changegroup generator.""" |
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|
983 if not outgoing.missing: |
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diff
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|
984 return None |
23178
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23177
diff
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|
985 bundler = packermap[version][0](repo, bundlecaps) |
23177
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diff
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|
986 return getsubsetraw(repo, outgoing, bundler, source) |
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Sune Foldager <cryo@cyanite.org>
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23168
diff
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|
987 |
26508
47a12de9ac3f
changegroup: add version argument to getlocalchangegroup
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
26424
diff
changeset
|
988 def getlocalchangegroup(repo, source, outgoing, bundlecaps=None, |
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989 version='01'): |
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990 """Like getbundle, but taking a discovery.outgoing as an argument. |
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991 |
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992 This is only implemented for local repos and reuses potentially |
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993 precomputed sets in outgoing.""" |
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994 if not outgoing.missing: |
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995 return None |
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996 bundler = packermap[version][0](repo, bundlecaps) |
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997 return getsubset(repo, outgoing, bundler, source) |
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998 |
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999 def computeoutgoing(repo, heads, common): |
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1000 """Computes which revs are outgoing given a set of common |
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1001 and a set of heads. |
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1002 |
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1003 This is a separate function so extensions can have access to |
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1004 the logic. |
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1005 |
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1006 Returns a discovery.outgoing object. |
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1007 """ |
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1008 cl = repo.changelog |
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1009 if common: |
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1010 hasnode = cl.hasnode |
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1011 common = [n for n in common if hasnode(n)] |
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1012 else: |
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1013 common = [nullid] |
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1014 if not heads: |
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1015 heads = cl.heads() |
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1016 return discovery.outgoing(cl, common, heads) |
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1017 |
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1018 def getchangegroup(repo, source, heads=None, common=None, bundlecaps=None, |
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1019 version='01'): |
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1020 """Like changegroupsubset, but returns the set difference between the |
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1021 ancestors of heads and the ancestors common. |
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1022 |
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1023 If heads is None, use the local heads. If common is None, use [nullid]. |
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1024 |
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1025 The nodes in common might not all be known locally due to the way the |
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1026 current discovery protocol works. |
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1027 """ |
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1028 outgoing = computeoutgoing(repo, heads, common) |
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1029 return getlocalchangegroup(repo, source, outgoing, bundlecaps=bundlecaps, |
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1030 version=version) |
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1031 |
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1032 def changegroup(repo, basenodes, source): |
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1033 # to avoid a race we use changegroupsubset() (issue1320) |
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1034 return changegroupsubset(repo, basenodes, repo.heads(), source) |
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1035 |
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1036 def _addchangegroupfiles(repo, source, revmap, trp, pr, needfiles, wasempty): |
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1037 revisions = 0 |
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1038 files = 0 |
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1039 while True: |
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1040 chunkdata = source.filelogheader() |
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1041 if not chunkdata: |
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1042 break |
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1043 f = chunkdata["filename"] |
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1044 repo.ui.debug("adding %s revisions\n" % f) |
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1045 pr() |
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1046 directory = (f[-1] == '/') |
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1047 if directory: |
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1048 # a directory using treemanifests |
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1049 fl = repo.manifest.dirlog(f) |
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1050 else: |
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1051 fl = repo.file(f) |
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1052 o = len(fl) |
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|
1053 try: |
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|
1054 if not fl.addgroup(source, revmap, trp): |
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1055 raise error.Abort(_("received file revlog group is empty")) |
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1056 except error.CensoredBaseError as e: |
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1057 raise error.Abort(_("received delta base is censored: %s") % e) |
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1058 if not directory: |
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1059 revisions += len(fl) - o |
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1060 files += 1 |
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1061 if f in needfiles: |
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1062 needs = needfiles[f] |
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1063 for new in xrange(o, len(fl)): |
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1064 n = fl.node(new) |
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1065 if n in needs: |
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1066 needs.remove(n) |
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1067 else: |
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1068 raise error.Abort( |
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1069 _("received spurious file revlog entry")) |
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1070 if not needs: |
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1071 del needfiles[f] |
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1072 repo.ui.progress(_('files'), None) |
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1073 |
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|
1074 for f, needs in needfiles.iteritems(): |
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1075 fl = repo.file(f) |
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1076 for n in needs: |
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1077 try: |
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1078 fl.rev(n) |
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1079 except error.LookupError: |
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1080 raise error.Abort( |
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1081 _('missing file data for %s:%s - run hg verify') % |
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|
1082 (f, hex(n))) |
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|
1083 |
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|
1084 return revisions, files |