Mercurial > hg
annotate mercurial/bundle2.py @ 26365:33af0c53aeff
help: add config.troubleshooting section at the top
author | timeless@mozdev.org |
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date | Thu, 24 Sep 2015 14:45:17 -0400 |
parents | 521b4d061d4a |
children | cff70549a959 |
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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: int32 |
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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: int32 |
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68 |
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69 The total number of Bytes used by the part header. 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 (restricted to [a-zA-Z0-9_:-]*) |
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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 Each parameter's key MUST be unique within the part. |
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117 |
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118 :payload: |
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119 |
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120 payload is a series of `<chunksize><chunkdata>`. |
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121 |
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122 `chunksize` is an int32, `chunkdata` are plain bytes (as much as |
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123 `chunksize` says)` The payload part is concluded by a zero size chunk. |
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124 |
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125 The current implementation always produces either zero or one chunk. |
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126 This is an implementation limitation that will ultimately be lifted. |
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127 |
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128 `chunksize` can be negative to trigger special case processing. No such |
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129 processing is in place yet. |
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130 |
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131 Bundle processing |
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132 ============================ |
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133 |
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134 Each part is processed in order using a "part handler". Handler are registered |
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135 for a certain part type. |
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136 |
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137 The matching of a part to its handler is case insensitive. The case of the |
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138 part type is used to know if a part is mandatory or advisory. If the Part type |
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139 contains any uppercase char it is considered mandatory. When no handler is |
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140 known for a Mandatory part, the process is aborted and an exception is raised. |
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141 If the part is advisory and no handler is known, the part is ignored. When the |
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142 process is aborted, the full bundle is still read from the stream to keep the |
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143 channel usable. But none of the part read from an abort are processed. In the |
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144 future, dropping the stream may become an option for channel we do not care to |
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145 preserve. |
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146 """ |
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147 |
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148 from __future__ import absolute_import |
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149 |
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150 import errno |
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151 import re |
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152 import string |
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153 import struct |
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154 import sys |
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155 import urllib |
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156 |
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157 from .i18n import _ |
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158 from . import ( |
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159 changegroup, |
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160 error, |
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161 obsolete, |
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162 pushkey, |
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163 tags, |
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164 url, |
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165 util, |
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166 ) |
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167 |
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168 _pack = struct.pack |
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169 _unpack = struct.unpack |
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170 |
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171 _fstreamparamsize = '>i' |
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172 _fpartheadersize = '>i' |
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173 _fparttypesize = '>B' |
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174 _fpartid = '>I' |
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175 _fpayloadsize = '>i' |
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176 _fpartparamcount = '>BB' |
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177 |
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178 preferedchunksize = 4096 |
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179 |
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180 _parttypeforbidden = re.compile('[^a-zA-Z0-9_:-]') |
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181 |
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182 def outdebug(ui, message): |
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183 """debug regarding output stream (bundling)""" |
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184 if ui.configbool('devel', 'bundle2.debug', False): |
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185 ui.debug('bundle2-output: %s\n' % message) |
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186 |
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187 def indebug(ui, message): |
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188 """debug on input stream (unbundling)""" |
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189 if ui.configbool('devel', 'bundle2.debug', False): |
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190 ui.debug('bundle2-input: %s\n' % message) |
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191 |
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192 def validateparttype(parttype): |
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193 """raise ValueError if a parttype contains invalid character""" |
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194 if _parttypeforbidden.search(parttype): |
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195 raise ValueError(parttype) |
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196 |
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197 def _makefpartparamsizes(nbparams): |
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198 """return a struct format to read part parameter sizes |
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199 |
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200 The number parameters is variable so we need to build that format |
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201 dynamically. |
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202 """ |
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203 return '>'+('BB'*nbparams) |
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204 |
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205 parthandlermapping = {} |
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206 |
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207 def parthandler(parttype, params=()): |
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208 """decorator that register a function as a bundle2 part handler |
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209 |
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210 eg:: |
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211 |
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212 @parthandler('myparttype', ('mandatory', 'param', 'handled')) |
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213 def myparttypehandler(...): |
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214 '''process a part of type "my part".''' |
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215 ... |
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216 """ |
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217 validateparttype(parttype) |
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218 def _decorator(func): |
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219 lparttype = parttype.lower() # enforce lower case matching. |
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220 assert lparttype not in parthandlermapping |
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221 parthandlermapping[lparttype] = func |
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222 func.params = frozenset(params) |
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223 return func |
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224 return _decorator |
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225 |
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226 class unbundlerecords(object): |
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227 """keep record of what happens during and unbundle |
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228 |
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229 New records are added using `records.add('cat', obj)`. Where 'cat' is a |
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230 category of record and obj is an arbitrary object. |
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231 |
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232 `records['cat']` will return all entries of this category 'cat'. |
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233 |
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234 Iterating on the object itself will yield `('category', obj)` tuples |
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235 for all entries. |
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236 |
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237 All iterations happens in chronological order. |
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238 """ |
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239 |
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240 def __init__(self): |
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241 self._categories = {} |
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242 self._sequences = [] |
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243 self._replies = {} |
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244 |
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245 def add(self, category, entry, inreplyto=None): |
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246 """add a new record of a given category. |
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247 |
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248 The entry can then be retrieved in the list returned by |
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249 self['category'].""" |
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250 self._categories.setdefault(category, []).append(entry) |
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251 self._sequences.append((category, entry)) |
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252 if inreplyto is not None: |
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253 self.getreplies(inreplyto).add(category, entry) |
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254 |
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255 def getreplies(self, partid): |
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256 """get the records that are replies to a specific part""" |
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257 return self._replies.setdefault(partid, unbundlerecords()) |
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258 |
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259 def __getitem__(self, cat): |
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260 return tuple(self._categories.get(cat, ())) |
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261 |
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262 def __iter__(self): |
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263 return iter(self._sequences) |
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264 |
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265 def __len__(self): |
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266 return len(self._sequences) |
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267 |
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268 def __nonzero__(self): |
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269 return bool(self._sequences) |
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270 |
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271 class bundleoperation(object): |
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272 """an object that represents a single bundling process |
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273 |
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274 Its purpose is to carry unbundle-related objects and states. |
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275 |
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276 A new object should be created at the beginning of each bundle processing. |
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277 The object is to be returned by the processing function. |
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278 |
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279 The object has very little content now it will ultimately contain: |
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280 * an access to the repo the bundle is applied to, |
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281 * a ui object, |
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282 * a way to retrieve a transaction to add changes to the repo, |
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283 * a way to record the result of processing each part, |
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284 * a way to construct a bundle response when applicable. |
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285 """ |
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286 |
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287 def __init__(self, repo, transactiongetter, captureoutput=True): |
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288 self.repo = repo |
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289 self.ui = repo.ui |
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290 self.records = unbundlerecords() |
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291 self.gettransaction = transactiongetter |
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292 self.reply = None |
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293 self.captureoutput = captureoutput |
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294 |
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295 class TransactionUnavailable(RuntimeError): |
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296 pass |
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297 |
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298 def _notransaction(): |
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299 """default method to get a transaction while processing a bundle |
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300 |
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301 Raise an exception to highlight the fact that no transaction was expected |
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302 to be created""" |
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303 raise TransactionUnavailable() |
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304 |
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305 def processbundle(repo, unbundler, transactiongetter=None, op=None): |
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306 """This function process a bundle, apply effect to/from a repo |
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307 |
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308 It iterates over each part then searches for and uses the proper handling |
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309 code to process the part. Parts are processed in order. |
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310 |
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311 This is very early version of this function that will be strongly reworked |
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312 before final usage. |
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313 |
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314 Unknown Mandatory part will abort the process. |
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315 |
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316 It is temporarily possible to provide a prebuilt bundleoperation to the |
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317 function. This is used to ensure output is properly propagated in case of |
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318 an error during the unbundling. This output capturing part will likely be |
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319 reworked and this ability will probably go away in the process. |
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320 """ |
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321 if op is None: |
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322 if transactiongetter is None: |
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323 transactiongetter = _notransaction |
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324 op = bundleoperation(repo, transactiongetter) |
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325 # todo: |
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326 # - replace this is a init function soon. |
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327 # - exception catching |
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328 unbundler.params |
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329 if repo.ui.debugflag: |
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330 msg = ['bundle2-input-bundle:'] |
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331 if unbundler.params: |
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332 msg.append(' %i params') |
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333 if op.gettransaction is None: |
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334 msg.append(' no-transaction') |
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335 else: |
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336 msg.append(' with-transaction') |
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337 msg.append('\n') |
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338 repo.ui.debug(''.join(msg)) |
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339 iterparts = enumerate(unbundler.iterparts()) |
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340 part = None |
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341 nbpart = 0 |
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342 try: |
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343 for nbpart, part in iterparts: |
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344 _processpart(op, part) |
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345 except BaseException as exc: |
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346 for nbpart, part in iterparts: |
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347 # consume the bundle content |
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348 part.seek(0, 2) |
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349 # Small hack to let caller code distinguish exceptions from bundle2 |
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350 # processing from processing the old format. This is mostly |
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351 # needed to handle different return codes to unbundle according to the |
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352 # type of bundle. We should probably clean up or drop this return code |
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353 # craziness in a future version. |
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354 exc.duringunbundle2 = True |
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355 salvaged = [] |
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356 replycaps = None |
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357 if op.reply is not None: |
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358 salvaged = op.reply.salvageoutput() |
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359 replycaps = op.reply.capabilities |
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360 exc._replycaps = replycaps |
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361 exc._bundle2salvagedoutput = salvaged |
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362 raise |
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363 finally: |
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364 repo.ui.debug('bundle2-input-bundle: %i parts total\n' % nbpart) |
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365 |
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366 return op |
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367 |
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368 def _processpart(op, part): |
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369 """process a single part from a bundle |
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370 |
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371 The part is guaranteed to have been fully consumed when the function exits |
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372 (even if an exception is raised).""" |
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373 status = 'unknown' # used by debug output |
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374 try: |
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375 try: |
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376 handler = parthandlermapping.get(part.type) |
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377 if handler is None: |
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378 status = 'unsupported-type' |
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379 raise error.UnsupportedPartError(parttype=part.type) |
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380 indebug(op.ui, 'found a handler for part %r' % part.type) |
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381 unknownparams = part.mandatorykeys - handler.params |
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382 if unknownparams: |
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383 unknownparams = list(unknownparams) |
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384 unknownparams.sort() |
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385 status = 'unsupported-params (%s)' % unknownparams |
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386 raise error.UnsupportedPartError(parttype=part.type, |
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387 params=unknownparams) |
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388 status = 'supported' |
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389 except error.UnsupportedPartError as exc: |
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390 if part.mandatory: # mandatory parts |
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391 raise |
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392 indebug(op.ui, 'ignoring unsupported advisory part %s' % exc) |
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393 return # skip to part processing |
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394 finally: |
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395 if op.ui.debugflag: |
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396 msg = ['bundle2-input-part: "%s"' % part.type] |
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397 if not part.mandatory: |
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398 msg.append(' (advisory)') |
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399 nbmp = len(part.mandatorykeys) |
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400 nbap = len(part.params) - nbmp |
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401 if nbmp or nbap: |
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402 msg.append(' (params:') |
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403 if nbmp: |
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404 msg.append(' %i mandatory' % nbmp) |
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405 if nbap: |
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406 msg.append(' %i advisory' % nbmp) |
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407 msg.append(')') |
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408 msg.append(' %s\n' % status) |
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409 op.ui.debug(''.join(msg)) |
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410 |
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411 # handler is called outside the above try block so that we don't |
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412 # risk catching KeyErrors from anything other than the |
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413 # parthandlermapping lookup (any KeyError raised by handler() |
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414 # itself represents a defect of a different variety). |
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415 output = None |
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416 if op.captureoutput and op.reply is not None: |
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417 op.ui.pushbuffer(error=True, subproc=True) |
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418 output = '' |
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419 try: |
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420 handler(op, part) |
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421 finally: |
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422 if output is not None: |
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423 output = op.ui.popbuffer() |
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424 if output: |
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425 outpart = op.reply.newpart('output', data=output, |
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426 mandatory=False) |
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427 outpart.addparam('in-reply-to', str(part.id), mandatory=False) |
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428 finally: |
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429 # consume the part content to not corrupt the stream. |
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430 part.seek(0, 2) |
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431 |
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432 |
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433 def decodecaps(blob): |
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434 """decode a bundle2 caps bytes blob into a dictionary |
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435 |
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436 The blob is a list of capabilities (one per line) |
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437 Capabilities may have values using a line of the form:: |
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438 |
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439 capability=value1,value2,value3 |
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440 |
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441 The values are always a list.""" |
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442 caps = {} |
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443 for line in blob.splitlines(): |
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444 if not line: |
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445 continue |
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446 if '=' not in line: |
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447 key, vals = line, () |
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448 else: |
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449 key, vals = line.split('=', 1) |
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450 vals = vals.split(',') |
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451 key = urllib.unquote(key) |
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452 vals = [urllib.unquote(v) for v in vals] |
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453 caps[key] = vals |
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454 return caps |
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455 |
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456 def encodecaps(caps): |
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457 """encode a bundle2 caps dictionary into a bytes blob""" |
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458 chunks = [] |
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459 for ca in sorted(caps): |
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460 vals = caps[ca] |
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461 ca = urllib.quote(ca) |
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462 vals = [urllib.quote(v) for v in vals] |
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463 if vals: |
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464 ca = "%s=%s" % (ca, ','.join(vals)) |
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465 chunks.append(ca) |
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466 return '\n'.join(chunks) |
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467 |
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468 class bundle20(object): |
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469 """represent an outgoing bundle2 container |
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470 |
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471 Use the `addparam` method to add stream level parameter. and `newpart` to |
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472 populate it. Then call `getchunks` to retrieve all the binary chunks of |
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473 data that compose the bundle2 container.""" |
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474 |
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475 _magicstring = 'HG20' |
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476 |
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477 def __init__(self, ui, capabilities=()): |
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478 self.ui = ui |
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479 self._params = [] |
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480 self._parts = [] |
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481 self.capabilities = dict(capabilities) |
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482 |
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483 @property |
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484 def nbparts(self): |
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485 """total number of parts added to the bundler""" |
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486 return len(self._parts) |
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487 |
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488 # methods used to defines the bundle2 content |
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489 def addparam(self, name, value=None): |
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490 """add a stream level parameter""" |
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491 if not name: |
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492 raise ValueError('empty parameter name') |
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493 if name[0] not in string.letters: |
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494 raise ValueError('non letter first character: %r' % name) |
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495 self._params.append((name, value)) |
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496 |
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497 def addpart(self, part): |
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498 """add a new part to the bundle2 container |
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499 |
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500 Parts contains the actual applicative payload.""" |
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501 assert part.id is None |
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502 part.id = len(self._parts) # very cheap counter |
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503 self._parts.append(part) |
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504 |
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505 def newpart(self, typeid, *args, **kwargs): |
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506 """create a new part and add it to the containers |
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507 |
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508 As the part is directly added to the containers. For now, this means |
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509 that any failure to properly initialize the part after calling |
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510 ``newpart`` should result in a failure of the whole bundling process. |
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511 |
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512 You can still fall back to manually create and add if you need better |
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513 control.""" |
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514 part = bundlepart(typeid, *args, **kwargs) |
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515 self.addpart(part) |
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516 return part |
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|
517 |
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518 # methods used to generate the bundle2 stream |
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519 def getchunks(self): |
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520 if self.ui.debugflag: |
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521 msg = ['bundle2-output-bundle: "%s",' % self._magicstring] |
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522 if self._params: |
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523 msg.append(' (%i params)' % len(self._params)) |
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524 msg.append(' %i parts total\n' % len(self._parts)) |
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525 self.ui.debug(''.join(msg)) |
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526 outdebug(self.ui, 'start emission of %s stream' % self._magicstring) |
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527 yield self._magicstring |
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528 param = self._paramchunk() |
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529 outdebug(self.ui, 'bundle parameter: %s' % param) |
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530 yield _pack(_fstreamparamsize, len(param)) |
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531 if param: |
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532 yield param |
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533 |
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534 outdebug(self.ui, 'start of parts') |
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535 for part in self._parts: |
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|
536 outdebug(self.ui, 'bundle part: "%s"' % part.type) |
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|
537 for chunk in part.getchunks(ui=self.ui): |
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538 yield chunk |
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|
539 outdebug(self.ui, 'end of bundle') |
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540 yield _pack(_fpartheadersize, 0) |
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541 |
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542 def _paramchunk(self): |
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543 """return a encoded version of all stream parameters""" |
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544 blocks = [] |
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|
545 for par, value in self._params: |
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546 par = urllib.quote(par) |
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547 if value is not None: |
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548 value = urllib.quote(value) |
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549 par = '%s=%s' % (par, value) |
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550 blocks.append(par) |
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551 return ' '.join(blocks) |
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552 |
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553 def salvageoutput(self): |
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554 """return a list with a copy of all output parts in the bundle |
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555 |
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556 This is meant to be used during error handling to make sure we preserve |
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557 server output""" |
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558 salvaged = [] |
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559 for part in self._parts: |
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560 if part.type.startswith('output'): |
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561 salvaged.append(part.copy()) |
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562 return salvaged |
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563 |
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564 |
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565 class unpackermixin(object): |
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566 """A mixin to extract bytes and struct data from a stream""" |
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567 |
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568 def __init__(self, fp): |
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569 self._fp = fp |
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570 self._seekable = (util.safehasattr(fp, 'seek') and |
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571 util.safehasattr(fp, 'tell')) |
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572 |
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573 def _unpack(self, format): |
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574 """unpack this struct format from the stream""" |
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575 data = self._readexact(struct.calcsize(format)) |
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576 return _unpack(format, data) |
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577 |
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578 def _readexact(self, size): |
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579 """read exactly <size> bytes from the stream""" |
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580 return changegroup.readexactly(self._fp, size) |
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581 |
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582 def seek(self, offset, whence=0): |
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583 """move the underlying file pointer""" |
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584 if self._seekable: |
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585 return self._fp.seek(offset, whence) |
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586 else: |
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587 raise NotImplementedError(_('File pointer is not seekable')) |
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588 |
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589 def tell(self): |
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590 """return the file offset, or None if file is not seekable""" |
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591 if self._seekable: |
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592 try: |
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593 return self._fp.tell() |
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594 except IOError as e: |
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595 if e.errno == errno.ESPIPE: |
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596 self._seekable = False |
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597 else: |
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598 raise |
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599 return None |
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600 |
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601 def close(self): |
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602 """close underlying file""" |
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603 if util.safehasattr(self._fp, 'close'): |
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604 return self._fp.close() |
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605 |
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606 def getunbundler(ui, fp, magicstring=None): |
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607 """return a valid unbundler object for a given magicstring""" |
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608 if magicstring is None: |
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609 magicstring = changegroup.readexactly(fp, 4) |
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610 magic, version = magicstring[0:2], magicstring[2:4] |
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611 if magic != 'HG': |
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612 raise util.Abort(_('not a Mercurial bundle')) |
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613 unbundlerclass = formatmap.get(version) |
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614 if unbundlerclass is None: |
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615 raise util.Abort(_('unknown bundle version %s') % version) |
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616 unbundler = unbundlerclass(ui, fp) |
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617 indebug(ui, 'start processing of %s stream' % magicstring) |
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618 return unbundler |
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619 |
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620 class unbundle20(unpackermixin): |
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621 """interpret a bundle2 stream |
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622 |
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623 This class is fed with a binary stream and yields parts through its |
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624 `iterparts` methods.""" |
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625 |
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626 def __init__(self, ui, fp): |
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627 """If header is specified, we do not read it out of the stream.""" |
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628 self.ui = ui |
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629 super(unbundle20, self).__init__(fp) |
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630 |
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631 @util.propertycache |
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632 def params(self): |
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633 """dictionary of stream level parameters""" |
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634 indebug(self.ui, 'reading bundle2 stream parameters') |
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635 params = {} |
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636 paramssize = self._unpack(_fstreamparamsize)[0] |
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637 if paramssize < 0: |
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638 raise error.BundleValueError('negative bundle param size: %i' |
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639 % paramssize) |
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640 if paramssize: |
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641 for p in self._readexact(paramssize).split(' '): |
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642 p = p.split('=', 1) |
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643 p = [urllib.unquote(i) for i in p] |
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644 if len(p) < 2: |
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645 p.append(None) |
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646 self._processparam(*p) |
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647 params[p[0]] = p[1] |
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648 return params |
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649 |
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650 def _processparam(self, name, value): |
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651 """process a parameter, applying its effect if needed |
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652 |
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653 Parameter starting with a lower case letter are advisory and will be |
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654 ignored when unknown. Those starting with an upper case letter are |
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655 mandatory and will this function will raise a KeyError when unknown. |
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656 |
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657 Note: no option are currently supported. Any input will be either |
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658 ignored or failing. |
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659 """ |
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660 if not name: |
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661 raise ValueError('empty parameter name') |
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662 if name[0] not in string.letters: |
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663 raise ValueError('non letter first character: %r' % name) |
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664 # Some logic will be later added here to try to process the option for |
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665 # a dict of known parameter. |
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666 if name[0].islower(): |
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667 indebug(self.ui, "ignoring unknown parameter %r" % name) |
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668 else: |
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669 raise error.UnsupportedPartError(params=(name,)) |
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670 |
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671 |
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672 def iterparts(self): |
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673 """yield all parts contained in the stream""" |
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674 # make sure param have been loaded |
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675 self.params |
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676 indebug(self.ui, 'start extraction of bundle2 parts') |
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677 headerblock = self._readpartheader() |
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678 while headerblock is not None: |
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679 part = unbundlepart(self.ui, headerblock, self._fp) |
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680 yield part |
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681 part.seek(0, 2) |
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682 headerblock = self._readpartheader() |
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683 indebug(self.ui, 'end of bundle2 stream') |
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684 |
21014
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685 def _readpartheader(self): |
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686 """reads a part header size and return the bytes blob |
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687 |
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688 returns None if empty""" |
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689 headersize = self._unpack(_fpartheadersize)[0] |
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690 if headersize < 0: |
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691 raise error.BundleValueError('negative part header size: %i' |
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692 % headersize) |
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693 indebug(self.ui, 'part header size: %i' % headersize) |
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694 if headersize: |
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695 return self._readexact(headersize) |
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696 return None |
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697 |
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698 def compressed(self): |
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699 return False |
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700 |
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701 formatmap = {'20': unbundle20} |
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702 |
21005
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703 class bundlepart(object): |
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704 """A bundle2 part contains application level payload |
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705 |
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706 The part `type` is used to route the part to the application level |
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707 handler. |
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708 |
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709 The part payload is contained in ``part.data``. It could be raw bytes or a |
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710 generator of byte chunks. |
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711 |
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712 You can add parameters to the part using the ``addparam`` method. |
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713 Parameters can be either mandatory (default) or advisory. Remote side |
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714 should be able to safely ignore the advisory ones. |
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715 |
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716 Both data and parameters cannot be modified after the generation has begun. |
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717 """ |
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718 |
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719 def __init__(self, parttype, mandatoryparams=(), advisoryparams=(), |
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720 data='', mandatory=True): |
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721 validateparttype(parttype) |
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722 self.id = None |
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723 self.type = parttype |
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724 self._data = data |
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725 self._mandatoryparams = list(mandatoryparams) |
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726 self._advisoryparams = list(advisoryparams) |
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727 # checking for duplicated entries |
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728 self._seenparams = set() |
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729 for pname, __ in self._mandatoryparams + self._advisoryparams: |
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730 if pname in self._seenparams: |
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731 raise RuntimeError('duplicated params: %s' % pname) |
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732 self._seenparams.add(pname) |
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733 # status of the part's generation: |
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734 # - None: not started, |
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735 # - False: currently generated, |
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736 # - True: generation done. |
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737 self._generated = None |
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738 self.mandatory = mandatory |
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739 |
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740 def copy(self): |
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741 """return a copy of the part |
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742 |
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743 The new part have the very same content but no partid assigned yet. |
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744 Parts with generated data cannot be copied.""" |
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745 assert not util.safehasattr(self.data, 'next') |
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746 return self.__class__(self.type, self._mandatoryparams, |
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747 self._advisoryparams, self._data, self.mandatory) |
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748 |
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749 # methods used to defines the part content |
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750 def __setdata(self, data): |
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751 if self._generated is not None: |
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752 raise error.ReadOnlyPartError('part is being generated') |
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753 self._data = data |
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754 def __getdata(self): |
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755 return self._data |
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756 data = property(__getdata, __setdata) |
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757 |
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758 @property |
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759 def mandatoryparams(self): |
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760 # make it an immutable tuple to force people through ``addparam`` |
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761 return tuple(self._mandatoryparams) |
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762 |
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763 @property |
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764 def advisoryparams(self): |
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|
765 # make it an immutable tuple to force people through ``addparam`` |
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|
766 return tuple(self._advisoryparams) |
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767 |
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|
768 def addparam(self, name, value='', mandatory=True): |
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diff
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|
769 if self._generated is not None: |
21618
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parents:
21617
diff
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|
770 raise error.ReadOnlyPartError('part is being generated') |
21607
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21606
diff
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|
771 if name in self._seenparams: |
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diff
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|
772 raise ValueError('duplicated params: %s' % name) |
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diff
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|
773 self._seenparams.add(name) |
21605
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774 params = self._advisoryparams |
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|
775 if mandatory: |
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diff
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|
776 params = self._mandatoryparams |
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diff
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777 params.append((name, value)) |
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diff
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|
778 |
21601
7ff01befc7ec
bundle2: track life cycle of parts
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21600
diff
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|
779 # methods used to generates the bundle2 stream |
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diff
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|
780 def getchunks(self, ui): |
21601
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781 if self._generated is not None: |
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782 raise RuntimeError('part can only be consumed once') |
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diff
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|
783 self._generated = False |
25323
21a25fb81d2c
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diff
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|
784 |
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diff
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|
785 if ui.debugflag: |
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diff
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|
786 msg = ['bundle2-output-part: "%s"' % self.type] |
21a25fb81d2c
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|
787 if not self.mandatory: |
21a25fb81d2c
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diff
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|
788 msg.append(' (advisory)') |
21a25fb81d2c
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diff
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789 nbmp = len(self.mandatoryparams) |
21a25fb81d2c
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|
790 nbap = len(self.advisoryparams) |
21a25fb81d2c
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diff
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|
791 if nbmp or nbap: |
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792 msg.append(' (params:') |
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diff
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|
793 if nbmp: |
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|
794 msg.append(' %i mandatory' % nbmp) |
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diff
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|
795 if nbap: |
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diff
changeset
|
796 msg.append(' %i advisory' % nbmp) |
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|
797 msg.append(')') |
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diff
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|
798 if not self.data: |
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diff
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|
799 msg.append(' empty payload') |
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diff
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|
800 elif util.safehasattr(self.data, 'next'): |
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diff
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|
801 msg.append(' streamed payload') |
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diff
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|
802 else: |
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diff
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|
803 msg.append(' %i bytes payload' % len(self.data)) |
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diff
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|
804 msg.append('\n') |
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diff
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|
805 ui.debug(''.join(msg)) |
21a25fb81d2c
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diff
changeset
|
806 |
20877
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20876
diff
changeset
|
807 #### header |
23590
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Eric Sumner <ericsumner@fb.com>
parents:
23586
diff
changeset
|
808 if self.mandatory: |
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|
809 parttype = self.type.upper() |
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parents:
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diff
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|
810 else: |
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diff
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|
811 parttype = self.type.lower() |
25321
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25320
diff
changeset
|
812 outdebug(ui, 'part %s: "%s"' % (self.id, parttype)) |
20877
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diff
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|
813 ## parttype |
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diff
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|
814 header = [_pack(_fparttypesize, len(parttype)), |
4440c7cc3728
bundle2.bundlepart: make mandatory part flag explicit in API
Eric Sumner <ericsumner@fb.com>
parents:
23586
diff
changeset
|
815 parttype, _pack(_fpartid, self.id), |
20856
8a6a86c9a5b5
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diff
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|
816 ] |
20877
9e9e3a4e9261
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diff
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|
817 ## parameters |
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diff
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|
818 # count |
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diff
changeset
|
819 manpar = self.mandatoryparams |
9e9e3a4e9261
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diff
changeset
|
820 advpar = self.advisoryparams |
9e9e3a4e9261
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diff
changeset
|
821 header.append(_pack(_fpartparamcount, len(manpar), len(advpar))) |
9e9e3a4e9261
bundle2: part params
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20876
diff
changeset
|
822 # size |
9e9e3a4e9261
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diff
changeset
|
823 parsizes = [] |
9e9e3a4e9261
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diff
changeset
|
824 for key, value in manpar: |
9e9e3a4e9261
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Pierre-Yves David <pierre-yves.david@fb.com>
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20876
diff
changeset
|
825 parsizes.append(len(key)) |
9e9e3a4e9261
bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
20876
diff
changeset
|
826 parsizes.append(len(value)) |
9e9e3a4e9261
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Pierre-Yves David <pierre-yves.david@fb.com>
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20876
diff
changeset
|
827 for key, value in advpar: |
9e9e3a4e9261
bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
20876
diff
changeset
|
828 parsizes.append(len(key)) |
9e9e3a4e9261
bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
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20876
diff
changeset
|
829 parsizes.append(len(value)) |
9e9e3a4e9261
bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
20876
diff
changeset
|
830 paramsizes = _pack(_makefpartparamsizes(len(parsizes) / 2), *parsizes) |
9e9e3a4e9261
bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
20876
diff
changeset
|
831 header.append(paramsizes) |
9e9e3a4e9261
bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
20876
diff
changeset
|
832 # key, value |
9e9e3a4e9261
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parents:
20876
diff
changeset
|
833 for key, value in manpar: |
9e9e3a4e9261
bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
20876
diff
changeset
|
834 header.append(key) |
9e9e3a4e9261
bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
20876
diff
changeset
|
835 header.append(value) |
9e9e3a4e9261
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Pierre-Yves David <pierre-yves.david@fb.com>
parents:
20876
diff
changeset
|
836 for key, value in advpar: |
9e9e3a4e9261
bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
20876
diff
changeset
|
837 header.append(key) |
9e9e3a4e9261
bundle2: part params
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
20876
diff
changeset
|
838 header.append(value) |
9e9e3a4e9261
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parents:
20876
diff
changeset
|
839 ## finalize header |
20856
8a6a86c9a5b5
bundle2: support bundling of empty part (with a type)
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parents:
20844
diff
changeset
|
840 headerchunk = ''.join(header) |
25321
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parents:
25320
diff
changeset
|
841 outdebug(ui, 'header chunk size: %i' % len(headerchunk)) |
20856
8a6a86c9a5b5
bundle2: support bundling of empty part (with a type)
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
20844
diff
changeset
|
842 yield _pack(_fpartheadersize, len(headerchunk)) |
8a6a86c9a5b5
bundle2: support bundling of empty part (with a type)
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
20844
diff
changeset
|
843 yield headerchunk |
20877
9e9e3a4e9261
bundle2: part params
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20876
diff
changeset
|
844 ## payload |
23067
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bundle2: transmit exception during part generation
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23066
diff
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|
845 try: |
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parents:
23066
diff
changeset
|
846 for chunk in self._payloadchunks(): |
25321
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parents:
25320
diff
changeset
|
847 outdebug(ui, 'payload chunk size: %i' % len(chunk)) |
23067
420a051616ce
bundle2: transmit exception during part generation
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23066
diff
changeset
|
848 yield _pack(_fpayloadsize, len(chunk)) |
420a051616ce
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parents:
23066
diff
changeset
|
849 yield chunk |
26144
4bc3707f3e67
bundle2: don't try to recover from a GeneratorExit (issue4785)
Augie Fackler <augie@google.com>
parents:
25919
diff
changeset
|
850 except GeneratorExit: |
4bc3707f3e67
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Augie Fackler <augie@google.com>
parents:
25919
diff
changeset
|
851 # GeneratorExit means that nobody is listening for our |
4bc3707f3e67
bundle2: don't try to recover from a GeneratorExit (issue4785)
Augie Fackler <augie@google.com>
parents:
25919
diff
changeset
|
852 # results anyway, so just bail quickly rather than trying |
4bc3707f3e67
bundle2: don't try to recover from a GeneratorExit (issue4785)
Augie Fackler <augie@google.com>
parents:
25919
diff
changeset
|
853 # to produce an error part. |
4bc3707f3e67
bundle2: don't try to recover from a GeneratorExit (issue4785)
Augie Fackler <augie@google.com>
parents:
25919
diff
changeset
|
854 ui.debug('bundle2-generatorexit\n') |
4bc3707f3e67
bundle2: don't try to recover from a GeneratorExit (issue4785)
Augie Fackler <augie@google.com>
parents:
25919
diff
changeset
|
855 raise |
25660
328739ea70c3
global: mass rewrite to use modern exception syntax
Gregory Szorc <gregory.szorc@gmail.com>
parents:
25641
diff
changeset
|
856 except BaseException as exc: |
23067
420a051616ce
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23066
diff
changeset
|
857 # backup exception data for later |
25324
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parents:
25323
diff
changeset
|
858 ui.debug('bundle2-input-stream-interrupt: encoding exception %s' |
deed9c6b12d2
bundle2: add generic debug output regarding generated interruption
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25323
diff
changeset
|
859 % exc) |
23067
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diff
changeset
|
860 exc_info = sys.exc_info() |
420a051616ce
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23066
diff
changeset
|
861 msg = 'unexpected error: %s' % exc |
24686
e0e28e910fa3
bundle2: rename format, parts and config to final names
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
24648
diff
changeset
|
862 interpart = bundlepart('error:abort', [('message', msg)], |
23590
4440c7cc3728
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Eric Sumner <ericsumner@fb.com>
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diff
changeset
|
863 mandatory=False) |
23067
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23066
diff
changeset
|
864 interpart.id = 0 |
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diff
changeset
|
865 yield _pack(_fpayloadsize, -1) |
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diff
changeset
|
866 for chunk in interpart.getchunks(ui=ui): |
23067
420a051616ce
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parents:
23066
diff
changeset
|
867 yield chunk |
25321
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25320
diff
changeset
|
868 outdebug(ui, 'closing payload chunk') |
23067
420a051616ce
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diff
changeset
|
869 # abort current part payload |
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diff
changeset
|
870 yield _pack(_fpayloadsize, 0) |
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diff
changeset
|
871 raise exc_info[0], exc_info[1], exc_info[2] |
21000
4cae06ae1562
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20998
diff
changeset
|
872 # end of payload |
25321
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diff
changeset
|
873 outdebug(ui, 'closing payload chunk') |
21000
4cae06ae1562
bundle2: extract a _payloadchunks method for part
Pierre-Yves David <pierre-yves.david@fb.com>
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874 yield _pack(_fpayloadsize, 0) |
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875 self._generated = True |
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876 |
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877 def _payloadchunks(self): |
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878 """yield chunks of a the part payload |
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879 |
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|
880 Exists to handle the different methods to provide data to a part.""" |
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881 # we only support fixed size data now. |
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882 # This will be improved in the future. |
21001
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883 if util.safehasattr(self.data, 'next'): |
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884 buff = util.chunkbuffer(self.data) |
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885 chunk = buff.read(preferedchunksize) |
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886 while chunk: |
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887 yield chunk |
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888 chunk = buff.read(preferedchunksize) |
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889 elif len(self.data): |
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890 yield self.data |
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891 |
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892 |
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893 flaginterrupt = -1 |
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894 |
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895 class interrupthandler(unpackermixin): |
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896 """read one part and process it with restricted capability |
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897 |
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898 This allows to transmit exception raised on the producer size during part |
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|
899 iteration while the consumer is reading a part. |
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|
900 |
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901 Part processed in this manner only have access to a ui object,""" |
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902 |
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903 def __init__(self, ui, fp): |
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904 super(interrupthandler, self).__init__(fp) |
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905 self.ui = ui |
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|
906 |
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907 def _readpartheader(self): |
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908 """reads a part header size and return the bytes blob |
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909 |
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910 returns None if empty""" |
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911 headersize = self._unpack(_fpartheadersize)[0] |
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912 if headersize < 0: |
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913 raise error.BundleValueError('negative part header size: %i' |
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914 % headersize) |
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915 indebug(self.ui, 'part header size: %i\n' % headersize) |
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916 if headersize: |
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917 return self._readexact(headersize) |
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918 return None |
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|
919 |
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920 def __call__(self): |
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921 |
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922 self.ui.debug('bundle2-input-stream-interrupt:' |
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923 ' opening out of band context\n') |
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924 indebug(self.ui, 'bundle2 stream interruption, looking for a part.') |
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925 headerblock = self._readpartheader() |
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926 if headerblock is None: |
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927 indebug(self.ui, 'no part found during interruption.') |
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928 return |
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|
929 part = unbundlepart(self.ui, headerblock, self._fp) |
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930 op = interruptoperation(self.ui) |
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|
931 _processpart(op, part) |
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932 self.ui.debug('bundle2-input-stream-interrupt:' |
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|
933 ' closing out of band context\n') |
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934 |
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935 class interruptoperation(object): |
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|
936 """A limited operation to be use by part handler during interruption |
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|
937 |
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|
938 It only have access to an ui object. |
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|
939 """ |
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|
940 |
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|
941 def __init__(self, ui): |
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942 self.ui = ui |
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|
943 self.reply = None |
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|
944 self.captureoutput = False |
23066
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|
945 |
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|
946 @property |
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|
947 def repo(self): |
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|
948 raise RuntimeError('no repo access from stream interruption') |
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|
949 |
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|
950 def gettransaction(self): |
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|
951 raise TransactionUnavailable('no repo access from stream interruption') |
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|
952 |
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|
953 class unbundlepart(unpackermixin): |
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|
954 """a bundle part read from a bundle""" |
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|
955 |
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|
956 def __init__(self, ui, header, fp): |
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|
957 super(unbundlepart, self).__init__(fp) |
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|
958 self.ui = ui |
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|
959 # unbundle state attr |
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960 self._headerdata = header |
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|
961 self._headeroffset = 0 |
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962 self._initialized = False |
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963 self.consumed = False |
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|
964 # part data |
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|
965 self.id = None |
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|
966 self.type = None |
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967 self.mandatoryparams = None |
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|
968 self.advisoryparams = None |
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diff
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|
969 self.params = None |
21612
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diff
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|
970 self.mandatorykeys = () |
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|
971 self._payloadstream = None |
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|
972 self._readheader() |
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23439
diff
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|
973 self._mandatory = None |
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24034
diff
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|
974 self._chunkindex = [] #(payload, file) position tuples for chunk starts |
24036
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24035
diff
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|
975 self._pos = 0 |
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|
976 |
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|
977 def _fromheader(self, size): |
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|
978 """return the next <size> byte from the header""" |
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|
979 offset = self._headeroffset |
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|
980 data = self._headerdata[offset:(offset + size)] |
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|
981 self._headeroffset = offset + size |
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diff
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|
982 return data |
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diff
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|
983 |
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|
984 def _unpackheader(self, format): |
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diff
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|
985 """read given format from header |
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diff
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|
986 |
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987 This automatically compute the size of the format to read.""" |
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988 data = self._fromheader(struct.calcsize(format)) |
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989 return _unpack(format, data) |
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990 |
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991 def _initparams(self, mandatoryparams, advisoryparams): |
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992 """internal function to setup all logic related parameters""" |
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993 # make it read only to prevent people touching it by mistake. |
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994 self.mandatoryparams = tuple(mandatoryparams) |
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995 self.advisoryparams = tuple(advisoryparams) |
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996 # user friendly UI |
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997 self.params = dict(self.mandatoryparams) |
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998 self.params.update(dict(self.advisoryparams)) |
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999 self.mandatorykeys = frozenset(p[0] for p in mandatoryparams) |
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1000 |
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1001 def _payloadchunks(self, chunknum=0): |
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1002 '''seek to specified chunk and start yielding data''' |
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1003 if len(self._chunkindex) == 0: |
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1004 assert chunknum == 0, 'Must start with chunk 0' |
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1005 self._chunkindex.append((0, super(unbundlepart, self).tell())) |
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1006 else: |
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1007 assert chunknum < len(self._chunkindex), \ |
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1008 'Unknown chunk %d' % chunknum |
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1009 super(unbundlepart, self).seek(self._chunkindex[chunknum][1]) |
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1010 |
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1011 pos = self._chunkindex[chunknum][0] |
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1012 payloadsize = self._unpack(_fpayloadsize)[0] |
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1013 indebug(self.ui, 'payload chunk size: %i' % payloadsize) |
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1014 while payloadsize: |
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1015 if payloadsize == flaginterrupt: |
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1016 # interruption detection, the handler will now read a |
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1017 # single part and process it. |
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1018 interrupthandler(self.ui, self._fp)() |
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1019 elif payloadsize < 0: |
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1020 msg = 'negative payload chunk size: %i' % payloadsize |
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1021 raise error.BundleValueError(msg) |
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1022 else: |
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1023 result = self._readexact(payloadsize) |
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1024 chunknum += 1 |
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1025 pos += payloadsize |
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1026 if chunknum == len(self._chunkindex): |
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1027 self._chunkindex.append((pos, |
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1028 super(unbundlepart, self).tell())) |
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1029 yield result |
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1030 payloadsize = self._unpack(_fpayloadsize)[0] |
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1031 indebug(self.ui, 'payload chunk size: %i' % payloadsize) |
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1032 |
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1033 def _findchunk(self, pos): |
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1034 '''for a given payload position, return a chunk number and offset''' |
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1035 for chunk, (ppos, fpos) in enumerate(self._chunkindex): |
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1036 if ppos == pos: |
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1037 return chunk, 0 |
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1038 elif ppos > pos: |
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1039 return chunk - 1, pos - self._chunkindex[chunk - 1][0] |
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1040 raise ValueError('Unknown chunk') |
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1041 |
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1042 def _readheader(self): |
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1043 """read the header and setup the object""" |
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1044 typesize = self._unpackheader(_fparttypesize)[0] |
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1045 self.type = self._fromheader(typesize) |
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1046 indebug(self.ui, 'part type: "%s"' % self.type) |
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1047 self.id = self._unpackheader(_fpartid)[0] |
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1048 indebug(self.ui, 'part id: "%s"' % self.id) |
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1049 # extract mandatory bit from type |
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1050 self.mandatory = (self.type != self.type.lower()) |
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1051 self.type = self.type.lower() |
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1052 ## reading parameters |
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1053 # param count |
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1054 mancount, advcount = self._unpackheader(_fpartparamcount) |
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1055 indebug(self.ui, 'part parameters: %i' % (mancount + advcount)) |
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1056 # param size |
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1057 fparamsizes = _makefpartparamsizes(mancount + advcount) |
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1058 paramsizes = self._unpackheader(fparamsizes) |
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1059 # make it a list of couple again |
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1060 paramsizes = zip(paramsizes[::2], paramsizes[1::2]) |
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1061 # split mandatory from advisory |
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1062 mansizes = paramsizes[:mancount] |
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1063 advsizes = paramsizes[mancount:] |
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1064 # retrieve param value |
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1065 manparams = [] |
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1066 for key, value in mansizes: |
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1067 manparams.append((self._fromheader(key), self._fromheader(value))) |
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1068 advparams = [] |
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1069 for key, value in advsizes: |
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1070 advparams.append((self._fromheader(key), self._fromheader(value))) |
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1071 self._initparams(manparams, advparams) |
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1072 ## part payload |
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1073 self._payloadstream = util.chunkbuffer(self._payloadchunks()) |
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1074 # we read the data, tell it |
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1075 self._initialized = True |
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1076 |
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1077 def read(self, size=None): |
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1078 """read payload data""" |
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1079 if not self._initialized: |
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1080 self._readheader() |
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1081 if size is None: |
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1082 data = self._payloadstream.read() |
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1083 else: |
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1084 data = self._payloadstream.read(size) |
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1085 self._pos += len(data) |
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1086 if size is None or len(data) < size: |
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1087 if not self.consumed and self._pos: |
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1088 self.ui.debug('bundle2-input-part: total payload size %i\n' |
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1089 % self._pos) |
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1090 self.consumed = True |
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1091 return data |
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1092 |
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1093 def tell(self): |
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1094 return self._pos |
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1095 |
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1096 def seek(self, offset, whence=0): |
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1097 if whence == 0: |
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1098 newpos = offset |
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1099 elif whence == 1: |
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1100 newpos = self._pos + offset |
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1101 elif whence == 2: |
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1102 if not self.consumed: |
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1103 self.read() |
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1104 newpos = self._chunkindex[-1][0] - offset |
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1105 else: |
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1106 raise ValueError('Unknown whence value: %r' % (whence,)) |
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1107 |
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1108 if newpos > self._chunkindex[-1][0] and not self.consumed: |
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1109 self.read() |
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1110 if not 0 <= newpos <= self._chunkindex[-1][0]: |
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1111 raise ValueError('Offset out of range') |
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1112 |
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1113 if self._pos != newpos: |
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1114 chunk, internaloffset = self._findchunk(newpos) |
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1115 self._payloadstream = util.chunkbuffer(self._payloadchunks(chunk)) |
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1116 adjust = self.read(internaloffset) |
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1117 if len(adjust) != internaloffset: |
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1118 raise util.Abort(_('Seek failed\n')) |
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1119 self._pos = newpos |
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1120 |
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1121 # These are only the static capabilities. |
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1122 # Check the 'getrepocaps' function for the rest. |
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1123 capabilities = {'HG20': (), |
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1124 'error': ('abort', 'unsupportedcontent', 'pushraced', |
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1125 'pushkey'), |
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1126 'listkeys': (), |
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1127 'pushkey': (), |
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1128 'digests': tuple(sorted(util.DIGESTS.keys())), |
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1129 'remote-changegroup': ('http', 'https'), |
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1130 'hgtagsfnodes': (), |
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1131 } |
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1132 |
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1133 def getrepocaps(repo, allowpushback=False): |
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1134 """return the bundle2 capabilities for a given repo |
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1135 |
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1136 Exists to allow extensions (like evolution) to mutate the capabilities. |
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1137 """ |
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1138 caps = capabilities.copy() |
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1139 caps['changegroup'] = tuple(sorted(changegroup.packermap.keys())) |
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1140 if obsolete.isenabled(repo, obsolete.exchangeopt): |
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1141 supportedformat = tuple('V%i' % v for v in obsolete.formats) |
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1142 caps['obsmarkers'] = supportedformat |
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1143 if allowpushback: |
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1144 caps['pushback'] = () |
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1145 return caps |
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1146 |
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1147 def bundle2caps(remote): |
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1148 """return the bundle capabilities of a peer as dict""" |
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1149 raw = remote.capable('bundle2') |
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1150 if not raw and raw != '': |
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1151 return {} |
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1152 capsblob = urllib.unquote(remote.capable('bundle2')) |
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1153 return decodecaps(capsblob) |
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1154 |
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1155 def obsmarkersversion(caps): |
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1156 """extract the list of supported obsmarkers versions from a bundle2caps dict |
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1157 """ |
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1158 obscaps = caps.get('obsmarkers', ()) |
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1159 return [int(c[1:]) for c in obscaps if c.startswith('V')] |
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1160 |
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1161 @parthandler('changegroup', ('version', 'nbchanges')) |
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1162 def handlechangegroup(op, inpart): |
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1163 """apply a changegroup part on the repo |
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1164 |
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1165 This is a very early implementation that will massive rework before being |
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1166 inflicted to any end-user. |
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1167 """ |
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1168 # Make sure we trigger a transaction creation |
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1169 # |
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1170 # The addchangegroup function will get a transaction object by itself, but |
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1171 # we need to make sure we trigger the creation of a transaction object used |
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1172 # for the whole processing scope. |
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1173 op.gettransaction() |
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1174 unpackerversion = inpart.params.get('version', '01') |
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1175 # We should raise an appropriate exception here |
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1176 unpacker = changegroup.packermap[unpackerversion][1] |
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1177 cg = unpacker(inpart, None) |
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1178 # the source and url passed here are overwritten by the one contained in |
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1179 # the transaction.hookargs argument. So 'bundle2' is a placeholder |
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1180 nbchangesets = None |
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1181 if 'nbchanges' in inpart.params: |
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1182 nbchangesets = int(inpart.params.get('nbchanges')) |
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1183 ret = changegroup.addchangegroup(op.repo, cg, 'bundle2', 'bundle2', |
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1184 expectedtotal=nbchangesets) |
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1185 op.records.add('changegroup', {'return': ret}) |
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1186 if op.reply is not None: |
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1187 # This is definitely not the final form of this |
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1188 # return. But one need to start somewhere. |
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1189 part = op.reply.newpart('reply:changegroup', mandatory=False) |
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1190 part.addparam('in-reply-to', str(inpart.id), mandatory=False) |
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1191 part.addparam('return', '%i' % ret, mandatory=False) |
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1192 assert not inpart.read() |
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1193 |
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1194 _remotechangegroupparams = tuple(['url', 'size', 'digests'] + |
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1195 ['digest:%s' % k for k in util.DIGESTS.keys()]) |
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1196 @parthandler('remote-changegroup', _remotechangegroupparams) |
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1197 def handleremotechangegroup(op, inpart): |
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1198 """apply a bundle10 on the repo, given an url and validation information |
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1199 |
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1200 All the information about the remote bundle to import are given as |
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1201 parameters. The parameters include: |
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1202 - url: the url to the bundle10. |
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1203 - size: the bundle10 file size. It is used to validate what was |
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1204 retrieved by the client matches the server knowledge about the bundle. |
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1205 - digests: a space separated list of the digest types provided as |
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1206 parameters. |
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1207 - digest:<digest-type>: the hexadecimal representation of the digest with |
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1208 that name. Like the size, it is used to validate what was retrieved by |
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1209 the client matches what the server knows about the bundle. |
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1210 |
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1211 When multiple digest types are given, all of them are checked. |
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1212 """ |
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1213 try: |
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1214 raw_url = inpart.params['url'] |
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1215 except KeyError: |
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1216 raise util.Abort(_('remote-changegroup: missing "%s" param') % 'url') |
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1217 parsed_url = util.url(raw_url) |
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1218 if parsed_url.scheme not in capabilities['remote-changegroup']: |
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1219 raise util.Abort(_('remote-changegroup does not support %s urls') % |
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1220 parsed_url.scheme) |
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1221 |
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1222 try: |
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1223 size = int(inpart.params['size']) |
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1224 except ValueError: |
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1225 raise util.Abort(_('remote-changegroup: invalid value for param "%s"') |
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1226 % 'size') |
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1227 except KeyError: |
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1228 raise util.Abort(_('remote-changegroup: missing "%s" param') % 'size') |
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1229 |
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1230 digests = {} |
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1231 for typ in inpart.params.get('digests', '').split(): |
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1232 param = 'digest:%s' % typ |
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1233 try: |
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1234 value = inpart.params[param] |
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1235 except KeyError: |
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1236 raise util.Abort(_('remote-changegroup: missing "%s" param') % |
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1237 param) |
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1238 digests[typ] = value |
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1239 |
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1240 real_part = util.digestchecker(url.open(op.ui, raw_url), size, digests) |
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1241 |
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1242 # Make sure we trigger a transaction creation |
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1243 # |
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1244 # The addchangegroup function will get a transaction object by itself, but |
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1245 # we need to make sure we trigger the creation of a transaction object used |
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1246 # for the whole processing scope. |
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1247 op.gettransaction() |
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1248 from . import exchange |
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1249 cg = exchange.readbundle(op.repo.ui, real_part, raw_url) |
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1250 if not isinstance(cg, changegroup.cg1unpacker): |
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1251 raise util.Abort(_('%s: not a bundle version 1.0') % |
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1252 util.hidepassword(raw_url)) |
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1253 ret = changegroup.addchangegroup(op.repo, cg, 'bundle2', 'bundle2') |
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1254 op.records.add('changegroup', {'return': ret}) |
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1255 if op.reply is not None: |
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1256 # This is definitely not the final form of this |
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1257 # return. But one need to start somewhere. |
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1258 part = op.reply.newpart('reply:changegroup') |
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1259 part.addparam('in-reply-to', str(inpart.id), mandatory=False) |
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1260 part.addparam('return', '%i' % ret, mandatory=False) |
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1261 try: |
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1262 real_part.validate() |
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1263 except util.Abort as e: |
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1264 raise util.Abort(_('bundle at %s is corrupted:\n%s') % |
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1265 (util.hidepassword(raw_url), str(e))) |
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1266 assert not inpart.read() |
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1267 |
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1268 @parthandler('reply:changegroup', ('return', 'in-reply-to')) |
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1269 def handlereplychangegroup(op, inpart): |
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1270 ret = int(inpart.params['return']) |
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1271 replyto = int(inpart.params['in-reply-to']) |
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1272 op.records.add('changegroup', {'return': ret}, replyto) |
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1273 |
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1274 @parthandler('check:heads') |
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1275 def handlecheckheads(op, inpart): |
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1276 """check that head of the repo did not change |
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1277 |
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1278 This is used to detect a push race when using unbundle. |
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1279 This replaces the "heads" argument of unbundle.""" |
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1280 h = inpart.read(20) |
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1281 heads = [] |
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1282 while len(h) == 20: |
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1283 heads.append(h) |
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1284 h = inpart.read(20) |
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1285 assert not h |
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1286 if heads != op.repo.heads(): |
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1287 raise error.PushRaced('repository changed while pushing - ' |
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1288 'please try again') |
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1289 |
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1290 @parthandler('output') |
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1291 def handleoutput(op, inpart): |
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1292 """forward output captured on the server to the client""" |
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1293 for line in inpart.read().splitlines(): |
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1294 op.ui.status(('remote: %s\n' % line)) |
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1295 |
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1296 @parthandler('replycaps') |
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1297 def handlereplycaps(op, inpart): |
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1298 """Notify that a reply bundle should be created |
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1299 |
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1300 The payload contains the capabilities information for the reply""" |
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1301 caps = decodecaps(inpart.read()) |
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1302 if op.reply is None: |
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1303 op.reply = bundle20(op.ui, caps) |
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1304 |
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1305 @parthandler('error:abort', ('message', 'hint')) |
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1306 def handleerrorabort(op, inpart): |
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1307 """Used to transmit abort error over the wire""" |
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1308 raise util.Abort(inpart.params['message'], hint=inpart.params.get('hint')) |
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1309 |
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1310 @parthandler('error:pushkey', ('namespace', 'key', 'new', 'old', 'ret', |
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1311 'in-reply-to')) |
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1312 def handleerrorpushkey(op, inpart): |
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1313 """Used to transmit failure of a mandatory pushkey over the wire""" |
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1314 kwargs = {} |
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1315 for name in ('namespace', 'key', 'new', 'old', 'ret'): |
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1316 value = inpart.params.get(name) |
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1317 if value is not None: |
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1318 kwargs[name] = value |
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1319 raise error.PushkeyFailed(inpart.params['in-reply-to'], **kwargs) |
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1320 |
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1321 @parthandler('error:unsupportedcontent', ('parttype', 'params')) |
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1322 def handleerrorunsupportedcontent(op, inpart): |
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1323 """Used to transmit unknown content error over the wire""" |
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1324 kwargs = {} |
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1325 parttype = inpart.params.get('parttype') |
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1326 if parttype is not None: |
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|
1327 kwargs['parttype'] = parttype |
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1328 params = inpart.params.get('params') |
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1329 if params is not None: |
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1330 kwargs['params'] = params.split('\0') |
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1331 |
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1332 raise error.UnsupportedPartError(**kwargs) |
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1333 |
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1334 @parthandler('error:pushraced', ('message',)) |
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1335 def handleerrorpushraced(op, inpart): |
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1336 """Used to transmit push race error over the wire""" |
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1337 raise error.ResponseError(_('push failed:'), inpart.params['message']) |
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1338 |
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1339 @parthandler('listkeys', ('namespace',)) |
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1340 def handlelistkeys(op, inpart): |
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1341 """retrieve pushkey namespace content stored in a bundle2""" |
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1342 namespace = inpart.params['namespace'] |
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1343 r = pushkey.decodekeys(inpart.read()) |
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1344 op.records.add('listkeys', (namespace, r)) |
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1345 |
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1346 @parthandler('pushkey', ('namespace', 'key', 'old', 'new')) |
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1347 def handlepushkey(op, inpart): |
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1348 """process a pushkey request""" |
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1349 dec = pushkey.decode |
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1350 namespace = dec(inpart.params['namespace']) |
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1351 key = dec(inpart.params['key']) |
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1352 old = dec(inpart.params['old']) |
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1353 new = dec(inpart.params['new']) |
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1354 ret = op.repo.pushkey(namespace, key, old, new) |
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1355 record = {'namespace': namespace, |
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1356 'key': key, |
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1357 'old': old, |
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1358 'new': new} |
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1359 op.records.add('pushkey', record) |
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1360 if op.reply is not None: |
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1361 rpart = op.reply.newpart('reply:pushkey') |
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1362 rpart.addparam('in-reply-to', str(inpart.id), mandatory=False) |
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1363 rpart.addparam('return', '%i' % ret, mandatory=False) |
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|
1364 if inpart.mandatory and not ret: |
25484
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1365 kwargs = {} |
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1366 for key in ('namespace', 'key', 'new', 'old', 'ret'): |
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1367 if key in inpart.params: |
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1368 kwargs[key] = inpart.params[key] |
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1369 raise error.PushkeyFailed(partid=str(inpart.id), **kwargs) |
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1370 |
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1371 @parthandler('reply:pushkey', ('return', 'in-reply-to')) |
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1372 def handlepushkeyreply(op, inpart): |
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1373 """retrieve the result of a pushkey request""" |
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1374 ret = int(inpart.params['return']) |
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1375 partid = int(inpart.params['in-reply-to']) |
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1376 op.records.add('pushkey', {'return': ret}, partid) |
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1377 |
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1378 @parthandler('obsmarkers') |
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1379 def handleobsmarker(op, inpart): |
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1380 """add a stream of obsmarkers to the repo""" |
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1381 tr = op.gettransaction() |
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1382 markerdata = inpart.read() |
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1383 if op.ui.config('experimental', 'obsmarkers-exchange-debug', False): |
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1384 op.ui.write(('obsmarker-exchange: %i bytes received\n') |
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|
1385 % len(markerdata)) |
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1386 new = op.repo.obsstore.mergemarkers(tr, markerdata) |
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1387 if new: |
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1388 op.repo.ui.status(_('%i new obsolescence markers\n') % new) |
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1389 op.records.add('obsmarkers', {'new': new}) |
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1390 if op.reply is not None: |
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1391 rpart = op.reply.newpart('reply:obsmarkers') |
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1392 rpart.addparam('in-reply-to', str(inpart.id), mandatory=False) |
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1393 rpart.addparam('new', '%i' % new, mandatory=False) |
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1394 |
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1395 |
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1396 @parthandler('reply:obsmarkers', ('new', 'in-reply-to')) |
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1397 def handleobsmarkerreply(op, inpart): |
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1398 """retrieve the result of a pushkey request""" |
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1399 ret = int(inpart.params['new']) |
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1400 partid = int(inpart.params['in-reply-to']) |
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1401 op.records.add('obsmarkers', {'new': ret}, partid) |
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1402 |
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1403 @parthandler('hgtagsfnodes') |
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1404 def handlehgtagsfnodes(op, inpart): |
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1405 """Applies .hgtags fnodes cache entries to the local repo. |
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1406 |
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1407 Payload is pairs of 20 byte changeset nodes and filenodes. |
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1408 """ |
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1409 cache = tags.hgtagsfnodescache(op.repo.unfiltered()) |
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bundle2: part handler for processing .hgtags fnodes mappings
Gregory Szorc <gregory.szorc@gmail.com>
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1410 |
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1411 count = 0 |
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1412 while True: |
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Gregory Szorc <gregory.szorc@gmail.com>
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1413 node = inpart.read(20) |
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Gregory Szorc <gregory.szorc@gmail.com>
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1414 fnode = inpart.read(20) |
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bundle2: part handler for processing .hgtags fnodes mappings
Gregory Szorc <gregory.szorc@gmail.com>
parents:
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1415 if len(node) < 20 or len(fnode) < 20: |
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Gregory Szorc <gregory.szorc@gmail.com>
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1416 op.ui.debug('ignoring incomplete received .hgtags fnodes data\n') |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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1417 break |
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bundle2: part handler for processing .hgtags fnodes mappings
Gregory Szorc <gregory.szorc@gmail.com>
parents:
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1418 cache.setfnode(node, fnode) |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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1419 count += 1 |
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Gregory Szorc <gregory.szorc@gmail.com>
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1420 |
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1421 cache.write() |
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Gregory Szorc <gregory.szorc@gmail.com>
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1422 op.ui.debug('applied %i hgtags fnodes cache entries\n' % count) |