Mercurial > hg
annotate mercurial/bundle2.py @ 21707:e22cfd1ae97c stable
keyword: suppress keyword expansion while 'hg histedit' for internal merge
Before this patch, 'hg histedit' may cause unexpected conflict, if 'hg
histedit'-ed changes are located near lines in which keywords are
embedded, because keywords are substituted with other strings in the
working directory.
This patch suppresses keyword expansion while 'hg histedit' for
internal merge by adding 'histedit' to 'restricted' command list like
'merge'.
Test in this patch just swaps order of revision #13 and #14: this is
enough to cause internal merge.
author | FUJIWARA Katsunori <foozy@lares.dti.ne.jp> |
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date | Thu, 05 Jun 2014 16:47:14 +0900 |
parents | 9f3652e851f8 |
children | 1daad9dcdba2 |
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1 # bundle2.py - generic container format to transmit arbitrary data. |
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2 # |
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3 # Copyright 2013 Facebook, Inc. |
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4 # |
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5 # This software may be used and distributed according to the terms of the |
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6 # GNU General Public License version 2 or any later version. |
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7 """Handling of the new bundle2 format |
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8 |
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9 The goal of bundle2 is to act as an atomically packet to transmit a set of |
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10 payloads in an application agnostic way. It consist in a sequence of "parts" |
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11 that will be handed to and processed by the application layer. |
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12 |
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13 |
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14 General format architecture |
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15 =========================== |
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16 |
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17 The format is architectured as follow |
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18 |
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19 - magic string |
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20 - stream level parameters |
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21 - payload parts (any number) |
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22 - end of stream marker. |
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23 |
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24 the Binary format |
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25 ============================ |
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26 |
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27 All numbers are unsigned and big-endian. |
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28 |
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29 stream level parameters |
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30 ------------------------ |
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31 |
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32 Binary format is as follow |
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33 |
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34 :params size: (16 bits integer) |
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35 |
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36 The total number of Bytes used by the parameters |
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37 |
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38 :params value: arbitrary number of Bytes |
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39 |
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40 A blob of `params size` containing the serialized version of all stream level |
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41 parameters. |
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42 |
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43 The blob contains a space separated list of parameters. Parameters with value |
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44 are stored in the form `<name>=<value>`. Both name and value are urlquoted. |
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45 |
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46 Empty name are obviously forbidden. |
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47 |
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48 Name MUST start with a letter. If this first letter is lower case, the |
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49 parameter is advisory and can be safely ignored. However when the first |
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50 letter is capital, the parameter is mandatory and the bundling process MUST |
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51 stop if he is not able to proceed it. |
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52 |
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53 Stream parameters use a simple textual format for two main reasons: |
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54 |
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55 - Stream level parameters should remain simple and we want to discourage any |
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56 crazy usage. |
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57 - Textual data allow easy human inspection of a bundle2 header in case of |
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58 troubles. |
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59 |
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60 Any Applicative level options MUST go into a bundle2 part instead. |
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61 |
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62 Payload part |
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63 ------------------------ |
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64 |
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65 Binary format is as follow |
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66 |
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67 :header size: (16 bits inter) |
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68 |
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69 The total number of Bytes used by the part headers. When the header is empty |
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70 (size = 0) this is interpreted as the end of stream marker. |
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71 |
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72 :header: |
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73 |
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74 The header defines how to interpret the part. It contains two piece of |
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75 data: the part type, and the part parameters. |
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76 |
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77 The part type is used to route an application level handler, that can |
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78 interpret payload. |
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79 |
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80 Part parameters are passed to the application level handler. They are |
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81 meant to convey information that will help the application level object to |
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82 interpret the part payload. |
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83 |
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84 The binary format of the header is has follow |
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85 |
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86 :typesize: (one byte) |
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87 |
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88 :parttype: alphanumerical part name |
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89 |
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90 :partid: A 32bits integer (unique in the bundle) that can be used to refer |
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91 to this part. |
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92 |
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93 :parameters: |
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94 |
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95 Part's parameter may have arbitrary content, the binary structure is:: |
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96 |
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97 <mandatory-count><advisory-count><param-sizes><param-data> |
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98 |
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99 :mandatory-count: 1 byte, number of mandatory parameters |
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100 |
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101 :advisory-count: 1 byte, number of advisory parameters |
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102 |
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103 :param-sizes: |
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104 |
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105 N couple of bytes, where N is the total number of parameters. Each |
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106 couple contains (<size-of-key>, <size-of-value) for one parameter. |
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107 |
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108 :param-data: |
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109 |
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110 A blob of bytes from which each parameter key and value can be |
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111 retrieved using the list of size couples stored in the previous |
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112 field. |
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113 |
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114 Mandatory parameters comes first, then the advisory ones. |
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115 |
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116 :payload: |
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117 |
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118 payload is a series of `<chunksize><chunkdata>`. |
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119 |
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120 `chunksize` is a 32 bits integer, `chunkdata` are plain bytes (as much as |
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121 `chunksize` says)` The payload part is concluded by a zero size chunk. |
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122 |
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123 The current implementation always produces either zero or one chunk. |
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124 This is an implementation limitation that will ultimately be lifted. |
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125 |
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126 Bundle processing |
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127 ============================ |
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128 |
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129 Each part is processed in order using a "part handler". Handler are registered |
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130 for a certain part type. |
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131 |
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132 The matching of a part to its handler is case insensitive. The case of the |
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133 part type is used to know if a part is mandatory or advisory. If the Part type |
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134 contains any uppercase char it is considered mandatory. When no handler is |
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135 known for a Mandatory part, the process is aborted and an exception is raised. |
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136 If the part is advisory and no handler is known, the part is ignored. When the |
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137 process is aborted, the full bundle is still read from the stream to keep the |
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138 channel usable. But none of the part read from an abort are processed. In the |
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139 future, dropping the stream may become an option for channel we do not care to |
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140 preserve. |
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141 """ |
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142 |
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143 import util |
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144 import struct |
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145 import urllib |
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146 import string |
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147 |
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148 import changegroup, error |
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149 from i18n import _ |
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150 |
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151 _pack = struct.pack |
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152 _unpack = struct.unpack |
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153 |
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154 _magicstring = 'HG2X' |
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155 |
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156 _fstreamparamsize = '>H' |
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157 _fpartheadersize = '>H' |
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158 _fparttypesize = '>B' |
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159 _fpartid = '>I' |
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160 _fpayloadsize = '>I' |
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161 _fpartparamcount = '>BB' |
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162 |
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163 preferedchunksize = 4096 |
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164 |
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165 def _makefpartparamsizes(nbparams): |
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166 """return a struct format to read part parameter sizes |
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167 |
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168 The number parameters is variable so we need to build that format |
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169 dynamically. |
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170 """ |
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171 return '>'+('BB'*nbparams) |
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172 |
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173 class UnknownPartError(KeyError): |
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174 """error raised when no handler is found for a Mandatory part""" |
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175 pass |
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176 |
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177 parthandlermapping = {} |
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178 |
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179 def parthandler(parttype): |
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180 """decorator that register a function as a bundle2 part handler |
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181 |
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182 eg:: |
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183 |
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184 @parthandler('myparttype') |
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185 def myparttypehandler(...): |
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186 '''process a part of type "my part".''' |
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187 ... |
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188 """ |
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189 def _decorator(func): |
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190 lparttype = parttype.lower() # enforce lower case matching. |
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191 assert lparttype not in parthandlermapping |
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192 parthandlermapping[lparttype] = func |
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193 return func |
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194 return _decorator |
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195 |
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196 class unbundlerecords(object): |
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197 """keep record of what happens during and unbundle |
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198 |
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199 New records are added using `records.add('cat', obj)`. Where 'cat' is a |
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200 category of record and obj is an arbitrary object. |
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201 |
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202 `records['cat']` will return all entries of this category 'cat'. |
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203 |
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204 Iterating on the object itself will yield `('category', obj)` tuples |
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205 for all entries. |
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206 |
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207 All iterations happens in chronological order. |
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208 """ |
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209 |
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210 def __init__(self): |
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211 self._categories = {} |
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212 self._sequences = [] |
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213 self._replies = {} |
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214 |
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215 def add(self, category, entry, inreplyto=None): |
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216 """add a new record of a given category. |
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217 |
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218 The entry can then be retrieved in the list returned by |
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219 self['category'].""" |
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220 self._categories.setdefault(category, []).append(entry) |
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221 self._sequences.append((category, entry)) |
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222 if inreplyto is not None: |
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223 self.getreplies(inreplyto).add(category, entry) |
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224 |
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225 def getreplies(self, partid): |
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226 """get the subrecords that replies to a specific part""" |
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227 return self._replies.setdefault(partid, unbundlerecords()) |
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228 |
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229 def __getitem__(self, cat): |
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230 return tuple(self._categories.get(cat, ())) |
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231 |
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232 def __iter__(self): |
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233 return iter(self._sequences) |
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234 |
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235 def __len__(self): |
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236 return len(self._sequences) |
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237 |
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238 def __nonzero__(self): |
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239 return bool(self._sequences) |
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240 |
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241 class bundleoperation(object): |
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242 """an object that represents a single bundling process |
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243 |
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244 Its purpose is to carry unbundle-related objects and states. |
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245 |
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246 A new object should be created at the beginning of each bundle processing. |
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247 The object is to be returned by the processing function. |
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248 |
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249 The object has very little content now it will ultimately contain: |
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250 * an access to the repo the bundle is applied to, |
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251 * a ui object, |
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252 * a way to retrieve a transaction to add changes to the repo, |
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253 * a way to record the result of processing each part, |
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254 * a way to construct a bundle response when applicable. |
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255 """ |
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256 |
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257 def __init__(self, repo, transactiongetter): |
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258 self.repo = repo |
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259 self.ui = repo.ui |
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260 self.records = unbundlerecords() |
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261 self.gettransaction = transactiongetter |
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262 self.reply = None |
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263 |
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264 class TransactionUnavailable(RuntimeError): |
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265 pass |
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266 |
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267 def _notransaction(): |
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268 """default method to get a transaction while processing a bundle |
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269 |
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270 Raise an exception to highlight the fact that no transaction was expected |
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271 to be created""" |
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272 raise TransactionUnavailable() |
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273 |
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274 def processbundle(repo, unbundler, transactiongetter=_notransaction): |
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275 """This function process a bundle, apply effect to/from a repo |
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276 |
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277 It iterates over each part then searches for and uses the proper handling |
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278 code to process the part. Parts are processed in order. |
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279 |
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280 This is very early version of this function that will be strongly reworked |
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281 before final usage. |
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282 |
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283 Unknown Mandatory part will abort the process. |
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284 """ |
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285 op = bundleoperation(repo, transactiongetter) |
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286 # todo: |
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287 # - replace this is a init function soon. |
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288 # - exception catching |
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289 unbundler.params |
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290 iterparts = unbundler.iterparts() |
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291 part = None |
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292 try: |
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293 for part in iterparts: |
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294 parttype = part.type |
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295 # part key are matched lower case |
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296 key = parttype.lower() |
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297 try: |
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298 handler = parthandlermapping[key] |
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299 op.ui.debug('found a handler for part %r\n' % parttype) |
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300 except KeyError: |
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301 if key != parttype: # mandatory parts |
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302 # todo: |
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303 # - use a more precise exception |
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304 raise UnknownPartError(key) |
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305 op.ui.debug('ignoring unknown advisory part %r\n' % key) |
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306 # consuming the part |
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307 part.read() |
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308 continue |
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309 |
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310 # handler is called outside the above try block so that we don't |
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311 # risk catching KeyErrors from anything other than the |
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312 # parthandlermapping lookup (any KeyError raised by handler() |
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313 # itself represents a defect of a different variety). |
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314 output = None |
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315 if op.reply is not None: |
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316 op.ui.pushbuffer(error=True) |
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317 output = '' |
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318 try: |
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319 handler(op, part) |
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320 finally: |
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321 if output is not None: |
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322 output = op.ui.popbuffer() |
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323 if output: |
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324 outpart = bundlepart('b2x:output', |
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325 advisoryparams=[('in-reply-to', |
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326 str(part.id))], |
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327 data=output) |
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328 op.reply.addpart(outpart) |
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329 part.read() |
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330 except Exception, exc: |
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331 if part is not None: |
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332 # consume the bundle content |
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333 part.read() |
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334 for part in iterparts: |
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335 # consume the bundle content |
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336 part.read() |
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337 # Small hack to let caller code distinguish exceptions from bundle2 |
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338 # processing fron the ones from bundle1 processing. This is mostly |
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339 # needed to handle different return codes to unbundle according to the |
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340 # type of bundle. We should probably clean up or drop this return code |
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341 # craziness in a future version. |
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342 exc.duringunbundle2 = True |
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343 raise |
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344 return op |
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345 |
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346 def decodecaps(blob): |
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347 """decode a bundle2 caps bytes blob into a dictionnary |
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348 |
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349 The blob is a list of capabilities (one per line) |
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350 Capabilities may have values using a line of the form:: |
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351 |
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352 capability=value1,value2,value3 |
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353 |
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354 The values are always a list.""" |
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355 caps = {} |
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356 for line in blob.splitlines(): |
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357 if not line: |
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358 continue |
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359 if '=' not in line: |
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360 key, vals = line, () |
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361 else: |
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362 key, vals = line.split('=', 1) |
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363 vals = vals.split(',') |
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364 key = urllib.unquote(key) |
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365 vals = [urllib.unquote(v) for v in vals] |
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366 caps[key] = vals |
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367 return caps |
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368 |
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369 def encodecaps(caps): |
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370 """encode a bundle2 caps dictionary into a bytes blob""" |
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371 chunks = [] |
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372 for ca in sorted(caps): |
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373 vals = caps[ca] |
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374 ca = urllib.quote(ca) |
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375 vals = [urllib.quote(v) for v in vals] |
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376 if vals: |
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377 ca = "%s=%s" % (ca, ','.join(vals)) |
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378 chunks.append(ca) |
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379 return '\n'.join(chunks) |
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380 |
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381 class bundle20(object): |
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382 """represent an outgoing bundle2 container |
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383 |
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384 Use the `addparam` method to add stream level parameter. and `addpart` to |
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385 populate it. Then call `getchunks` to retrieve all the binary chunks of |
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386 data that compose the bundle2 container.""" |
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387 |
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388 def __init__(self, ui, capabilities=()): |
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389 self.ui = ui |
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390 self._params = [] |
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391 self._parts = [] |
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392 self.capabilities = dict(capabilities) |
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393 |
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394 def addparam(self, name, value=None): |
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395 """add a stream level parameter""" |
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396 if not name: |
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397 raise ValueError('empty parameter name') |
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398 if name[0] not in string.letters: |
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399 raise ValueError('non letter first character: %r' % name) |
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400 self._params.append((name, value)) |
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401 |
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402 def addpart(self, part): |
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403 """add a new part to the bundle2 container |
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404 |
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405 Parts contains the actual applicative payload.""" |
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406 assert part.id is None |
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407 part.id = len(self._parts) # very cheap counter |
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408 self._parts.append(part) |
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409 |
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410 def getchunks(self): |
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411 self.ui.debug('start emission of %s stream\n' % _magicstring) |
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412 yield _magicstring |
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413 param = self._paramchunk() |
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414 self.ui.debug('bundle parameter: %s\n' % param) |
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415 yield _pack(_fstreamparamsize, len(param)) |
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416 if param: |
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417 yield param |
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418 |
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419 self.ui.debug('start of parts\n') |
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420 for part in self._parts: |
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421 self.ui.debug('bundle part: "%s"\n' % part.type) |
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422 for chunk in part.getchunks(): |
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423 yield chunk |
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424 self.ui.debug('end of bundle\n') |
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425 yield '\0\0' |
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426 |
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427 def _paramchunk(self): |
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428 """return a encoded version of all stream parameters""" |
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429 blocks = [] |
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430 for par, value in self._params: |
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431 par = urllib.quote(par) |
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432 if value is not None: |
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433 value = urllib.quote(value) |
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434 par = '%s=%s' % (par, value) |
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435 blocks.append(par) |
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436 return ' '.join(blocks) |
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437 |
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438 class unpackermixin(object): |
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439 """A mixin to extract bytes and struct data from a stream""" |
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440 |
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441 def __init__(self, fp): |
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442 self._fp = fp |
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443 |
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444 def _unpack(self, format): |
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445 """unpack this struct format from the stream""" |
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446 data = self._readexact(struct.calcsize(format)) |
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447 return _unpack(format, data) |
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448 |
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449 def _readexact(self, size): |
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450 """read exactly <size> bytes from the stream""" |
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451 return changegroup.readexactly(self._fp, size) |
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452 |
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453 |
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454 class unbundle20(unpackermixin): |
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455 """interpret a bundle2 stream |
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456 |
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457 This class is fed with a binary stream and yields parts through its |
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458 `iterparts` methods.""" |
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459 |
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460 def __init__(self, ui, fp, header=None): |
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461 """If header is specified, we do not read it out of the stream.""" |
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462 self.ui = ui |
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463 super(unbundle20, self).__init__(fp) |
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464 if header is None: |
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465 header = self._readexact(4) |
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466 magic, version = header[0:2], header[2:4] |
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467 if magic != 'HG': |
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468 raise util.Abort(_('not a Mercurial bundle')) |
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469 if version != '2X': |
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470 raise util.Abort(_('unknown bundle version %s') % version) |
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471 self.ui.debug('start processing of %s stream\n' % header) |
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472 |
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473 @util.propertycache |
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474 def params(self): |
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475 """dictionary of stream level parameters""" |
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476 self.ui.debug('reading bundle2 stream parameters\n') |
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477 params = {} |
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478 paramssize = self._unpack(_fstreamparamsize)[0] |
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479 if paramssize: |
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480 for p in self._readexact(paramssize).split(' '): |
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481 p = p.split('=', 1) |
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482 p = [urllib.unquote(i) for i in p] |
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483 if len(p) < 2: |
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484 p.append(None) |
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485 self._processparam(*p) |
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486 params[p[0]] = p[1] |
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487 return params |
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488 |
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489 def _processparam(self, name, value): |
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490 """process a parameter, applying its effect if needed |
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491 |
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492 Parameter starting with a lower case letter are advisory and will be |
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493 ignored when unknown. Those starting with an upper case letter are |
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494 mandatory and will this function will raise a KeyError when unknown. |
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495 |
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496 Note: no option are currently supported. Any input will be either |
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497 ignored or failing. |
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498 """ |
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499 if not name: |
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500 raise ValueError('empty parameter name') |
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501 if name[0] not in string.letters: |
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502 raise ValueError('non letter first character: %r' % name) |
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503 # Some logic will be later added here to try to process the option for |
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504 # a dict of known parameter. |
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505 if name[0].islower(): |
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506 self.ui.debug("ignoring unknown parameter %r\n" % name) |
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507 else: |
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508 raise KeyError(name) |
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509 |
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510 |
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511 def iterparts(self): |
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512 """yield all parts contained in the stream""" |
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513 # make sure param have been loaded |
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514 self.params |
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515 self.ui.debug('start extraction of bundle2 parts\n') |
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516 headerblock = self._readpartheader() |
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517 while headerblock is not None: |
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518 part = unbundlepart(self.ui, headerblock, self._fp) |
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519 yield part |
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520 headerblock = self._readpartheader() |
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521 self.ui.debug('end of bundle2 stream\n') |
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522 |
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523 def _readpartheader(self): |
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524 """reads a part header size and return the bytes blob |
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525 |
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526 returns None if empty""" |
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527 headersize = self._unpack(_fpartheadersize)[0] |
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528 self.ui.debug('part header size: %i\n' % headersize) |
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529 if headersize: |
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530 return self._readexact(headersize) |
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531 return None |
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532 |
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533 |
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534 class bundlepart(object): |
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535 """A bundle2 part contains application level payload |
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536 |
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537 The part `type` is used to route the part to the application level |
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538 handler. |
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539 """ |
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540 |
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541 def __init__(self, parttype, mandatoryparams=(), advisoryparams=(), |
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542 data=''): |
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543 self.id = None |
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544 self.type = parttype |
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545 self.data = data |
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546 self.mandatoryparams = mandatoryparams |
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547 self.advisoryparams = advisoryparams |
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548 |
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549 def getchunks(self): |
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550 #### header |
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551 ## parttype |
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552 header = [_pack(_fparttypesize, len(self.type)), |
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553 self.type, _pack(_fpartid, self.id), |
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554 ] |
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555 ## parameters |
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556 # count |
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557 manpar = self.mandatoryparams |
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558 advpar = self.advisoryparams |
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559 header.append(_pack(_fpartparamcount, len(manpar), len(advpar))) |
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560 # size |
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561 parsizes = [] |
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562 for key, value in manpar: |
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563 parsizes.append(len(key)) |
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564 parsizes.append(len(value)) |
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565 for key, value in advpar: |
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566 parsizes.append(len(key)) |
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567 parsizes.append(len(value)) |
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568 paramsizes = _pack(_makefpartparamsizes(len(parsizes) / 2), *parsizes) |
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569 header.append(paramsizes) |
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570 # key, value |
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571 for key, value in manpar: |
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572 header.append(key) |
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573 header.append(value) |
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574 for key, value in advpar: |
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575 header.append(key) |
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576 header.append(value) |
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577 ## finalize header |
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578 headerchunk = ''.join(header) |
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579 yield _pack(_fpartheadersize, len(headerchunk)) |
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580 yield headerchunk |
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581 ## payload |
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582 for chunk in self._payloadchunks(): |
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583 yield _pack(_fpayloadsize, len(chunk)) |
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584 yield chunk |
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585 # end of payload |
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586 yield _pack(_fpayloadsize, 0) |
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587 |
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588 def _payloadchunks(self): |
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589 """yield chunks of a the part payload |
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590 |
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591 Exists to handle the different methods to provide data to a part.""" |
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592 # we only support fixed size data now. |
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593 # This will be improved in the future. |
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594 if util.safehasattr(self.data, 'next'): |
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595 buff = util.chunkbuffer(self.data) |
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596 chunk = buff.read(preferedchunksize) |
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597 while chunk: |
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598 yield chunk |
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599 chunk = buff.read(preferedchunksize) |
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600 elif len(self.data): |
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601 yield self.data |
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602 |
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603 class unbundlepart(unpackermixin): |
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604 """a bundle part read from a bundle""" |
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605 |
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606 def __init__(self, ui, header, fp): |
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607 super(unbundlepart, self).__init__(fp) |
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608 self.ui = ui |
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609 # unbundle state attr |
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610 self._headerdata = header |
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611 self._headeroffset = 0 |
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612 self._initialized = False |
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613 self.consumed = False |
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614 # part data |
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615 self.id = None |
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616 self.type = None |
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617 self.mandatoryparams = None |
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618 self.advisoryparams = None |
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619 self._payloadstream = None |
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620 self._readheader() |
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621 |
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622 def _fromheader(self, size): |
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623 """return the next <size> byte from the header""" |
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624 offset = self._headeroffset |
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625 data = self._headerdata[offset:(offset + size)] |
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626 self._headeroffset = offset + size |
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627 return data |
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628 |
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629 def _unpackheader(self, format): |
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630 """read given format from header |
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631 |
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632 This automatically compute the size of the format to read.""" |
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633 data = self._fromheader(struct.calcsize(format)) |
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634 return _unpack(format, data) |
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635 |
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636 def _readheader(self): |
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637 """read the header and setup the object""" |
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638 typesize = self._unpackheader(_fparttypesize)[0] |
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639 self.type = self._fromheader(typesize) |
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640 self.ui.debug('part type: "%s"\n' % self.type) |
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641 self.id = self._unpackheader(_fpartid)[0] |
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642 self.ui.debug('part id: "%s"\n' % self.id) |
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643 ## reading parameters |
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644 # param count |
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645 mancount, advcount = self._unpackheader(_fpartparamcount) |
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646 self.ui.debug('part parameters: %i\n' % (mancount + advcount)) |
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647 # param size |
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648 fparamsizes = _makefpartparamsizes(mancount + advcount) |
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649 paramsizes = self._unpackheader(fparamsizes) |
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650 # make it a list of couple again |
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651 paramsizes = zip(paramsizes[::2], paramsizes[1::2]) |
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652 # split mandatory from advisory |
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653 mansizes = paramsizes[:mancount] |
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654 advsizes = paramsizes[mancount:] |
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655 # retrive param value |
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656 manparams = [] |
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657 for key, value in mansizes: |
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658 manparams.append((self._fromheader(key), self._fromheader(value))) |
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659 advparams = [] |
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660 for key, value in advsizes: |
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661 advparams.append((self._fromheader(key), self._fromheader(value))) |
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662 self.mandatoryparams = manparams |
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663 self.advisoryparams = advparams |
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664 ## part payload |
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665 def payloadchunks(): |
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666 payloadsize = self._unpack(_fpayloadsize)[0] |
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667 self.ui.debug('payload chunk size: %i\n' % payloadsize) |
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668 while payloadsize: |
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669 yield self._readexact(payloadsize) |
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670 payloadsize = self._unpack(_fpayloadsize)[0] |
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671 self.ui.debug('payload chunk size: %i\n' % payloadsize) |
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672 self._payloadstream = util.chunkbuffer(payloadchunks()) |
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673 # we read the data, tell it |
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674 self._initialized = True |
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675 |
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676 def read(self, size=None): |
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677 """read payload data""" |
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678 if not self._initialized: |
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679 self._readheader() |
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680 if size is None: |
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681 data = self._payloadstream.read() |
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682 else: |
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683 data = self._payloadstream.read(size) |
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684 if size is None or len(data) < size: |
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685 self.consumed = True |
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686 return data |
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687 |
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688 |
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689 @parthandler('b2x:changegroup') |
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690 def handlechangegroup(op, inpart): |
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691 """apply a changegroup part on the repo |
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692 |
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693 This is a very early implementation that will massive rework before being |
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694 inflicted to any end-user. |
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695 """ |
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696 # Make sure we trigger a transaction creation |
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697 # |
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698 # The addchangegroup function will get a transaction object by itself, but |
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699 # we need to make sure we trigger the creation of a transaction object used |
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700 # for the whole processing scope. |
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701 op.gettransaction() |
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702 cg = changegroup.unbundle10(inpart, 'UN') |
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703 ret = changegroup.addchangegroup(op.repo, cg, 'bundle2', 'bundle2') |
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704 op.records.add('changegroup', {'return': ret}) |
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705 if op.reply is not None: |
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706 # This is definitly not the final form of this |
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707 # return. But one need to start somewhere. |
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708 part = bundlepart('b2x:reply:changegroup', (), |
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709 [('in-reply-to', str(inpart.id)), |
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710 ('return', '%i' % ret)]) |
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711 op.reply.addpart(part) |
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712 assert not inpart.read() |
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713 |
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714 @parthandler('b2x:reply:changegroup') |
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715 def handlechangegroup(op, inpart): |
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716 p = dict(inpart.advisoryparams) |
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717 ret = int(p['return']) |
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718 op.records.add('changegroup', {'return': ret}, int(p['in-reply-to'])) |
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719 |
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720 @parthandler('b2x:check:heads') |
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|
721 def handlechangegroup(op, inpart): |
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722 """check that head of the repo did not change |
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723 |
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724 This is used to detect a push race when using unbundle. |
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725 This replaces the "heads" argument of unbundle.""" |
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726 h = inpart.read(20) |
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727 heads = [] |
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728 while len(h) == 20: |
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729 heads.append(h) |
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730 h = inpart.read(20) |
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731 assert not h |
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732 if heads != op.repo.heads(): |
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733 raise error.PushRaced('repository changed while pushing - ' |
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734 'please try again') |
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|
735 |
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736 @parthandler('b2x:output') |
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737 def handleoutput(op, inpart): |
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738 """forward output captured on the server to the client""" |
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739 for line in inpart.read().splitlines(): |
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740 op.ui.write(('remote: %s\n' % line)) |
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741 |
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742 @parthandler('b2x:replycaps') |
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743 def handlereplycaps(op, inpart): |
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744 """Notify that a reply bundle should be created |
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745 |
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746 The payload contains the capabilities information for the reply""" |
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747 caps = decodecaps(inpart.read()) |
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748 if op.reply is None: |
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|
749 op.reply = bundle20(op.ui, caps) |
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750 |
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751 @parthandler('b2x:error:abort') |
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752 def handlereplycaps(op, inpart): |
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753 """Used to transmit abort error over the wire""" |
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754 manargs = dict(inpart.mandatoryparams) |
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755 advargs = dict(inpart.advisoryparams) |
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|
756 raise util.Abort(manargs['message'], hint=advargs.get('hint')) |
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757 |
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758 @parthandler('b2x:error:unknownpart') |
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|
759 def handlereplycaps(op, inpart): |
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|
760 """Used to transmit unknown part error over the wire""" |
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761 manargs = dict(inpart.mandatoryparams) |
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bundle2: gracefully handle UnknownPartError during unbundle
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
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762 raise UnknownPartError(manargs['parttype']) |
21186
9f3652e851f8
bundle2: gracefully handle PushRaced error during unbundle
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
21185
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763 |
9f3652e851f8
bundle2: gracefully handle PushRaced error during unbundle
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
21185
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changeset
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764 @parthandler('b2x:error:pushraced') |
9f3652e851f8
bundle2: gracefully handle PushRaced error during unbundle
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
21185
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765 def handlereplycaps(op, inpart): |
9f3652e851f8
bundle2: gracefully handle PushRaced error during unbundle
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
21185
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changeset
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766 """Used to transmit push race error over the wire""" |
9f3652e851f8
bundle2: gracefully handle PushRaced error during unbundle
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
21185
diff
changeset
|
767 manargs = dict(inpart.mandatoryparams) |
9f3652e851f8
bundle2: gracefully handle PushRaced error during unbundle
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
21185
diff
changeset
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768 raise error.ResponseError(_('push failed:'), manargs['message']) |