Mercurial > hg
annotate mercurial/chgserver.py @ 35997:24f05489377b
rebase: make "successors" a set in _computeobsoletenotrebased()
There's no apparent reason for this variable to be a list and this
avoids converting it to a set when needed.
author | Denis Laxalde <denis@laxalde.org> |
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date | Sat, 10 Feb 2018 19:33:19 +0100 |
parents | 72b91f905065 |
children | ffa3026d4196 |
rev | line source |
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1 # chgserver.py - command server extension for cHg |
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2 # |
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3 # Copyright 2011 Yuya Nishihara <yuya@tcha.org> |
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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 |
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8 """command server extension for cHg |
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9 |
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10 'S' channel (read/write) |
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11 propagate ui.system() request to client |
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12 |
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13 'attachio' command |
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14 attach client's stdio passed by sendmsg() |
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15 |
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16 'chdir' command |
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17 change current directory |
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18 |
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19 'setenv' command |
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20 replace os.environ completely |
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21 |
28325 | 22 'setumask' command |
23 set umask | |
24 | |
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25 'validate' command |
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26 reload the config and check if the server is up to date |
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27 |
28325 | 28 Config |
29 ------ | |
30 | |
31 :: | |
32 | |
33 [chgserver] | |
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34 # how long (in seconds) should an idle chg server exit |
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35 idletimeout = 3600 |
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36 |
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37 # whether to skip config or env change checks |
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38 skiphash = False |
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39 """ |
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40 |
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41 from __future__ import absolute_import |
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42 |
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43 import hashlib |
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44 import inspect |
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45 import os |
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46 import re |
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47 import socket |
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48 import struct |
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49 import time |
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50 |
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51 from .i18n import _ |
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52 |
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53 from . import ( |
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54 commandserver, |
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55 encoding, |
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56 error, |
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57 extensions, |
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58 node, |
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59 pycompat, |
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60 util, |
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61 ) |
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62 |
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63 _log = commandserver.log |
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64 |
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65 def _hashlist(items): |
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66 """return sha1 hexdigest for a list""" |
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67 return node.hex(hashlib.sha1(str(items)).digest()) |
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68 |
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69 # sensitive config sections affecting confighash |
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70 _configsections = [ |
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71 'alias', # affects global state commands.table |
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72 'eol', # uses setconfig('eol', ...) |
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73 'extdiff', # uisetup will register new commands |
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74 'extensions', |
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75 ] |
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76 |
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77 _configsectionitems = [ |
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78 ('commands', 'show.aliasprefix'), # show.py reads it in extsetup |
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79 ] |
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80 |
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81 # sensitive environment variables affecting confighash |
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82 _envre = re.compile(r'''\A(?: |
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83 CHGHG |
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84 |HG(?:DEMANDIMPORT|EMITWARNINGS|MODULEPOLICY|PROF|RCPATH)? |
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85 |HG(?:ENCODING|PLAIN).* |
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86 |LANG(?:UAGE)? |
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87 |LC_.* |
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88 |LD_.* |
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89 |PATH |
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90 |PYTHON.* |
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91 |TERM(?:INFO)? |
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92 |TZ |
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93 )\Z''', re.X) |
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94 |
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95 def _confighash(ui): |
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96 """return a quick hash for detecting config/env changes |
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97 |
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98 confighash is the hash of sensitive config items and environment variables. |
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99 |
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100 for chgserver, it is designed that once confighash changes, the server is |
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101 not qualified to serve its client and should redirect the client to a new |
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102 server. different from mtimehash, confighash change will not mark the |
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103 server outdated and exit since the user can have different configs at the |
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104 same time. |
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105 """ |
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106 sectionitems = [] |
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107 for section in _configsections: |
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108 sectionitems.append(ui.configitems(section)) |
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109 for section, item in _configsectionitems: |
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110 sectionitems.append(ui.config(section, item)) |
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111 sectionhash = _hashlist(sectionitems) |
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112 # If $CHGHG is set, the change to $HG should not trigger a new chg server |
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113 if 'CHGHG' in encoding.environ: |
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114 ignored = {'HG'} |
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115 else: |
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116 ignored = set() |
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117 envitems = [(k, v) for k, v in encoding.environ.iteritems() |
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118 if _envre.match(k) and k not in ignored] |
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119 envhash = _hashlist(sorted(envitems)) |
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120 return sectionhash[:6] + envhash[:6] |
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121 |
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122 def _getmtimepaths(ui): |
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123 """get a list of paths that should be checked to detect change |
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124 |
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125 The list will include: |
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126 - extensions (will not cover all files for complex extensions) |
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127 - mercurial/__version__.py |
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128 - python binary |
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129 """ |
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130 modules = [m for n, m in extensions.extensions(ui)] |
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131 try: |
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132 from . import __version__ |
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133 modules.append(__version__) |
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134 except ImportError: |
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135 pass |
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136 files = [pycompat.sysexecutable] |
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137 for m in modules: |
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138 try: |
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139 files.append(inspect.getabsfile(m)) |
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140 except TypeError: |
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141 pass |
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142 return sorted(set(files)) |
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143 |
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144 def _mtimehash(paths): |
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145 """return a quick hash for detecting file changes |
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146 |
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147 mtimehash calls stat on given paths and calculate a hash based on size and |
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148 mtime of each file. mtimehash does not read file content because reading is |
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149 expensive. therefore it's not 100% reliable for detecting content changes. |
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150 it's possible to return different hashes for same file contents. |
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151 it's also possible to return a same hash for different file contents for |
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152 some carefully crafted situation. |
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153 |
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154 for chgserver, it is designed that once mtimehash changes, the server is |
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155 considered outdated immediately and should no longer provide service. |
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156 |
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157 mtimehash is not included in confighash because we only know the paths of |
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158 extensions after importing them (there is imp.find_module but that faces |
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159 race conditions). We need to calculate confighash without importing. |
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160 """ |
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161 def trystat(path): |
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162 try: |
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163 st = os.stat(path) |
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164 return (st.st_mtime, st.st_size) |
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165 except OSError: |
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166 # could be ENOENT, EPERM etc. not fatal in any case |
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167 pass |
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168 return _hashlist(map(trystat, paths))[:12] |
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169 |
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170 class hashstate(object): |
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171 """a structure storing confighash, mtimehash, paths used for mtimehash""" |
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172 def __init__(self, confighash, mtimehash, mtimepaths): |
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173 self.confighash = confighash |
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174 self.mtimehash = mtimehash |
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175 self.mtimepaths = mtimepaths |
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176 |
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177 @staticmethod |
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178 def fromui(ui, mtimepaths=None): |
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179 if mtimepaths is None: |
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180 mtimepaths = _getmtimepaths(ui) |
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181 confighash = _confighash(ui) |
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182 mtimehash = _mtimehash(mtimepaths) |
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183 _log('confighash = %s mtimehash = %s\n' % (confighash, mtimehash)) |
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184 return hashstate(confighash, mtimehash, mtimepaths) |
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185 |
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186 def _newchgui(srcui, csystem, attachio): |
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187 class chgui(srcui.__class__): |
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188 def __init__(self, src=None): |
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189 super(chgui, self).__init__(src) |
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190 if src: |
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191 self._csystem = getattr(src, '_csystem', csystem) |
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192 else: |
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193 self._csystem = csystem |
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194 |
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195 def _runsystem(self, cmd, environ, cwd, out): |
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196 # fallback to the original system method if the output needs to be |
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197 # captured (to self._buffers), or the output stream is not stdout |
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198 # (e.g. stderr, cStringIO), because the chg client is not aware of |
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199 # these situations and will behave differently (write to stdout). |
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200 if (out is not self.fout |
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201 or not util.safehasattr(self.fout, 'fileno') |
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202 or self.fout.fileno() != util.stdout.fileno()): |
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203 return util.system(cmd, environ=environ, cwd=cwd, out=out) |
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204 self.flush() |
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205 return self._csystem(cmd, util.shellenviron(environ), cwd) |
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206 |
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207 def _runpager(self, cmd, env=None): |
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208 self._csystem(cmd, util.shellenviron(env), type='pager', |
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209 cmdtable={'attachio': attachio}) |
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210 return True |
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211 |
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212 return chgui(srcui) |
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213 |
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214 def _loadnewui(srcui, args): |
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215 from . import dispatch # avoid cycle |
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216 |
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217 newui = srcui.__class__.load() |
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218 for a in ['fin', 'fout', 'ferr', 'environ']: |
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219 setattr(newui, a, getattr(srcui, a)) |
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220 if util.safehasattr(srcui, '_csystem'): |
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221 newui._csystem = srcui._csystem |
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222 |
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223 # command line args |
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224 options = dispatch._earlyparseopts(newui, args) |
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225 dispatch._parseconfig(newui, options['config']) |
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226 |
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227 # stolen from tortoisehg.util.copydynamicconfig() |
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228 for section, name, value in srcui.walkconfig(): |
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229 source = srcui.configsource(section, name) |
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230 if ':' in source or source == '--config' or source.startswith('$'): |
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231 # path:line or command line, or environ |
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232 continue |
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233 newui.setconfig(section, name, value, source) |
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234 |
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235 # load wd and repo config, copied from dispatch.py |
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236 cwd = options['cwd'] |
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237 cwd = cwd and os.path.realpath(cwd) or None |
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238 rpath = options['repository'] |
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239 path, newlui = dispatch._getlocal(newui, rpath, wd=cwd) |
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240 |
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241 return (newui, newlui) |
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242 |
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243 class channeledsystem(object): |
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244 """Propagate ui.system() request in the following format: |
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245 |
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|
246 payload length (unsigned int), |
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247 type, '\0', |
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248 cmd, '\0', |
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249 cwd, '\0', |
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250 envkey, '=', val, '\0', |
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251 ... |
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252 envkey, '=', val |
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253 |
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254 if type == 'system', waits for: |
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255 |
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256 exitcode length (unsigned int), |
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257 exitcode (int) |
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258 |
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259 if type == 'pager', repetitively waits for a command name ending with '\n' |
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260 and executes it defined by cmdtable, or exits the loop if the command name |
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261 is empty. |
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262 """ |
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263 def __init__(self, in_, out, channel): |
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264 self.in_ = in_ |
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265 self.out = out |
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266 self.channel = channel |
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267 |
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268 def __call__(self, cmd, environ, cwd=None, type='system', cmdtable=None): |
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269 args = [type, util.quotecommand(cmd), os.path.abspath(cwd or '.')] |
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270 args.extend('%s=%s' % (k, v) for k, v in environ.iteritems()) |
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271 data = '\0'.join(args) |
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272 self.out.write(struct.pack('>cI', self.channel, len(data))) |
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273 self.out.write(data) |
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274 self.out.flush() |
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275 |
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276 if type == 'system': |
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277 length = self.in_.read(4) |
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278 length, = struct.unpack('>I', length) |
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279 if length != 4: |
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280 raise error.Abort(_('invalid response')) |
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281 rc, = struct.unpack('>i', self.in_.read(4)) |
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282 return rc |
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283 elif type == 'pager': |
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284 while True: |
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285 cmd = self.in_.readline()[:-1] |
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286 if not cmd: |
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287 break |
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288 if cmdtable and cmd in cmdtable: |
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289 _log('pager subcommand: %s' % cmd) |
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290 cmdtable[cmd]() |
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291 else: |
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292 raise error.Abort(_('unexpected command: %s') % cmd) |
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293 else: |
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294 raise error.ProgrammingError('invalid S channel type: %s' % type) |
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295 |
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296 _iochannels = [ |
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297 # server.ch, ui.fp, mode |
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298 ('cin', 'fin', pycompat.sysstr('rb')), |
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299 ('cout', 'fout', pycompat.sysstr('wb')), |
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300 ('cerr', 'ferr', pycompat.sysstr('wb')), |
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301 ] |
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302 |
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303 class chgcmdserver(commandserver.server): |
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304 def __init__(self, ui, repo, fin, fout, sock, hashstate, baseaddress): |
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305 super(chgcmdserver, self).__init__( |
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306 _newchgui(ui, channeledsystem(fin, fout, 'S'), self.attachio), |
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307 repo, fin, fout) |
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308 self.clientsock = sock |
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309 self._oldios = [] # original (self.ch, ui.fp, fd) before "attachio" |
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310 self.hashstate = hashstate |
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311 self.baseaddress = baseaddress |
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312 if hashstate is not None: |
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313 self.capabilities = self.capabilities.copy() |
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314 self.capabilities['validate'] = chgcmdserver.validate |
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315 |
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316 def cleanup(self): |
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317 super(chgcmdserver, self).cleanup() |
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318 # dispatch._runcatch() does not flush outputs if exception is not |
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319 # handled by dispatch._dispatch() |
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320 self.ui.flush() |
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321 self._restoreio() |
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322 |
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323 def attachio(self): |
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324 """Attach to client's stdio passed via unix domain socket; all |
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325 channels except cresult will no longer be used |
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326 """ |
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327 # tell client to sendmsg() with 1-byte payload, which makes it |
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328 # distinctive from "attachio\n" command consumed by client.read() |
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329 self.clientsock.sendall(struct.pack('>cI', 'I', 1)) |
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330 clientfds = util.recvfds(self.clientsock.fileno()) |
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331 _log('received fds: %r\n' % clientfds) |
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332 |
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333 ui = self.ui |
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334 ui.flush() |
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335 first = self._saveio() |
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336 for fd, (cn, fn, mode) in zip(clientfds, _iochannels): |
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337 assert fd > 0 |
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338 fp = getattr(ui, fn) |
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339 os.dup2(fd, fp.fileno()) |
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340 os.close(fd) |
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341 if not first: |
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342 continue |
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343 # reset buffering mode when client is first attached. as we want |
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344 # to see output immediately on pager, the mode stays unchanged |
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345 # when client re-attached. ferr is unchanged because it should |
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346 # be unbuffered no matter if it is a tty or not. |
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347 if fn == 'ferr': |
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348 newfp = fp |
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349 else: |
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350 # make it line buffered explicitly because the default is |
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351 # decided on first write(), where fout could be a pager. |
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352 if fp.isatty(): |
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353 bufsize = 1 # line buffered |
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354 else: |
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355 bufsize = -1 # system default |
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356 newfp = os.fdopen(fp.fileno(), mode, bufsize) |
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357 setattr(ui, fn, newfp) |
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358 setattr(self, cn, newfp) |
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359 |
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360 self.cresult.write(struct.pack('>i', len(clientfds))) |
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361 |
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362 def _saveio(self): |
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363 if self._oldios: |
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364 return False |
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365 ui = self.ui |
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366 for cn, fn, _mode in _iochannels: |
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367 ch = getattr(self, cn) |
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368 fp = getattr(ui, fn) |
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369 fd = os.dup(fp.fileno()) |
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370 self._oldios.append((ch, fp, fd)) |
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371 return True |
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372 |
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373 def _restoreio(self): |
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374 ui = self.ui |
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375 for (ch, fp, fd), (cn, fn, _mode) in zip(self._oldios, _iochannels): |
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376 newfp = getattr(ui, fn) |
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377 # close newfp while it's associated with client; otherwise it |
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378 # would be closed when newfp is deleted |
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379 if newfp is not fp: |
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380 newfp.close() |
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381 # restore original fd: fp is open again |
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382 os.dup2(fd, fp.fileno()) |
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383 os.close(fd) |
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384 setattr(self, cn, ch) |
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385 setattr(ui, fn, fp) |
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386 del self._oldios[:] |
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387 |
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388 def validate(self): |
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389 """Reload the config and check if the server is up to date |
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390 |
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391 Read a list of '\0' separated arguments. |
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392 Write a non-empty list of '\0' separated instruction strings or '\0' |
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393 if the list is empty. |
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394 An instruction string could be either: |
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395 - "unlink $path", the client should unlink the path to stop the |
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396 outdated server. |
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397 - "redirect $path", the client should attempt to connect to $path |
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398 first. If it does not work, start a new server. It implies |
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399 "reconnect". |
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400 - "exit $n", the client should exit directly with code n. |
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401 This may happen if we cannot parse the config. |
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402 - "reconnect", the client should close the connection and |
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403 reconnect. |
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404 If neither "reconnect" nor "redirect" is included in the instruction |
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405 list, the client can continue with this server after completing all |
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406 the instructions. |
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407 """ |
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408 from . import dispatch # avoid cycle |
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409 |
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410 args = self._readlist() |
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411 try: |
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412 self.ui, lui = _loadnewui(self.ui, args) |
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413 except error.ParseError as inst: |
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414 dispatch._formatparse(self.ui.warn, inst) |
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415 self.ui.flush() |
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416 self.cresult.write('exit 255') |
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417 return |
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418 newhash = hashstate.fromui(lui, self.hashstate.mtimepaths) |
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419 insts = [] |
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420 if newhash.mtimehash != self.hashstate.mtimehash: |
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421 addr = _hashaddress(self.baseaddress, self.hashstate.confighash) |
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422 insts.append('unlink %s' % addr) |
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423 # mtimehash is empty if one or more extensions fail to load. |
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424 # to be compatible with hg, still serve the client this time. |
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425 if self.hashstate.mtimehash: |
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426 insts.append('reconnect') |
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427 if newhash.confighash != self.hashstate.confighash: |
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428 addr = _hashaddress(self.baseaddress, newhash.confighash) |
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429 insts.append('redirect %s' % addr) |
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430 _log('validate: %s\n' % insts) |
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431 self.cresult.write('\0'.join(insts) or '\0') |
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432 |
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433 def chdir(self): |
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434 """Change current directory |
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435 |
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436 Note that the behavior of --cwd option is bit different from this. |
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437 It does not affect --config parameter. |
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438 """ |
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439 path = self._readstr() |
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440 if not path: |
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441 return |
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442 _log('chdir to %r\n' % path) |
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443 os.chdir(path) |
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444 |
28159 | 445 def setumask(self): |
446 """Change umask""" | |
447 mask = struct.unpack('>I', self._read(4))[0] | |
448 _log('setumask %r\n' % mask) | |
449 os.umask(mask) | |
450 | |
30644 | 451 def runcommand(self): |
452 return super(chgcmdserver, self).runcommand() | |
453 | |
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454 def setenv(self): |
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455 """Clear and update os.environ |
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456 |
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457 Note that not all variables can make an effect on the running process. |
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458 """ |
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459 l = self._readlist() |
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460 try: |
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461 newenv = dict(s.split('=', 1) for s in l) |
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462 except ValueError: |
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463 raise ValueError('unexpected value in setenv request') |
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464 _log('setenv: %r\n' % sorted(newenv.keys())) |
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465 encoding.environ.clear() |
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466 encoding.environ.update(newenv) |
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467 |
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468 capabilities = commandserver.server.capabilities.copy() |
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469 capabilities.update({'attachio': attachio, |
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470 'chdir': chdir, |
30644 | 471 'runcommand': runcommand, |
28159 | 472 'setenv': setenv, |
473 'setumask': setumask}) | |
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474 |
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475 if util.safehasattr(util, 'setprocname'): |
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476 def setprocname(self): |
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477 """Change process title""" |
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478 name = self._readstr() |
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479 _log('setprocname: %r\n' % name) |
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480 util.setprocname(name) |
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481 capabilities['setprocname'] = setprocname |
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482 |
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483 def _tempaddress(address): |
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484 return '%s.%d.tmp' % (address, os.getpid()) |
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485 |
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486 def _hashaddress(address, hashstr): |
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487 # if the basename of address contains '.', use only the left part. this |
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488 # makes it possible for the client to pass 'server.tmp$PID' and follow by |
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489 # an atomic rename to avoid locking when spawning new servers. |
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490 dirname, basename = os.path.split(address) |
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491 basename = basename.split('.', 1)[0] |
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492 return '%s-%s' % (os.path.join(dirname, basename), hashstr) |
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493 |
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494 class chgunixservicehandler(object): |
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495 """Set of operations for chg services""" |
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496 |
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497 pollinterval = 1 # [sec] |
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498 |
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499 def __init__(self, ui): |
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500 self.ui = ui |
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501 self._idletimeout = ui.configint('chgserver', 'idletimeout') |
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502 self._lastactive = time.time() |
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503 |
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504 def bindsocket(self, sock, address): |
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505 self._inithashstate(address) |
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506 self._checkextensions() |
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507 self._bind(sock) |
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508 self._createsymlink() |
32237
1ada3d18e7fb
commandserver: move printbanner logic to bindsocket
Jun Wu <quark@fb.com>
parents:
32236
diff
changeset
|
509 # no "listening at" message should be printed to simulate hg behavior |
29545
28aca3fafc2a
chgserver: reorder service classes to make future patches readable
Yuya Nishihara <yuya@tcha.org>
parents:
29543
diff
changeset
|
510 |
29597
581c0c7cb258
chgserver: refactor initialization of real/base addresses
Yuya Nishihara <yuya@tcha.org>
parents:
29596
diff
changeset
|
511 def _inithashstate(self, address): |
29598
a67398726747
chgserver: rename private functions and variables of chgunixservicehandler
Yuya Nishihara <yuya@tcha.org>
parents:
29597
diff
changeset
|
512 self._baseaddress = address |
33499
0407a51b9d8c
codemod: register core configitems using a script
Jun Wu <quark@fb.com>
parents:
32271
diff
changeset
|
513 if self.ui.configbool('chgserver', 'skiphash'): |
29598
a67398726747
chgserver: rename private functions and variables of chgunixservicehandler
Yuya Nishihara <yuya@tcha.org>
parents:
29597
diff
changeset
|
514 self._hashstate = None |
a67398726747
chgserver: rename private functions and variables of chgunixservicehandler
Yuya Nishihara <yuya@tcha.org>
parents:
29597
diff
changeset
|
515 self._realaddress = address |
29545
28aca3fafc2a
chgserver: reorder service classes to make future patches readable
Yuya Nishihara <yuya@tcha.org>
parents:
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diff
changeset
|
516 return |
29598
a67398726747
chgserver: rename private functions and variables of chgunixservicehandler
Yuya Nishihara <yuya@tcha.org>
parents:
29597
diff
changeset
|
517 self._hashstate = hashstate.fromui(self.ui) |
a67398726747
chgserver: rename private functions and variables of chgunixservicehandler
Yuya Nishihara <yuya@tcha.org>
parents:
29597
diff
changeset
|
518 self._realaddress = _hashaddress(address, self._hashstate.confighash) |
29545
28aca3fafc2a
chgserver: reorder service classes to make future patches readable
Yuya Nishihara <yuya@tcha.org>
parents:
29543
diff
changeset
|
519 |
28aca3fafc2a
chgserver: reorder service classes to make future patches readable
Yuya Nishihara <yuya@tcha.org>
parents:
29543
diff
changeset
|
520 def _checkextensions(self): |
29598
a67398726747
chgserver: rename private functions and variables of chgunixservicehandler
Yuya Nishihara <yuya@tcha.org>
parents:
29597
diff
changeset
|
521 if not self._hashstate: |
29545
28aca3fafc2a
chgserver: reorder service classes to make future patches readable
Yuya Nishihara <yuya@tcha.org>
parents:
29543
diff
changeset
|
522 return |
28aca3fafc2a
chgserver: reorder service classes to make future patches readable
Yuya Nishihara <yuya@tcha.org>
parents:
29543
diff
changeset
|
523 if extensions.notloaded(): |
28aca3fafc2a
chgserver: reorder service classes to make future patches readable
Yuya Nishihara <yuya@tcha.org>
parents:
29543
diff
changeset
|
524 # one or more extensions failed to load. mtimehash becomes |
28aca3fafc2a
chgserver: reorder service classes to make future patches readable
Yuya Nishihara <yuya@tcha.org>
parents:
29543
diff
changeset
|
525 # meaningless because we do not know the paths of those extensions. |
28aca3fafc2a
chgserver: reorder service classes to make future patches readable
Yuya Nishihara <yuya@tcha.org>
parents:
29543
diff
changeset
|
526 # set mtimehash to an illegal hash value to invalidate the server. |
29598
a67398726747
chgserver: rename private functions and variables of chgunixservicehandler
Yuya Nishihara <yuya@tcha.org>
parents:
29597
diff
changeset
|
527 self._hashstate.mtimehash = '' |
29545
28aca3fafc2a
chgserver: reorder service classes to make future patches readable
Yuya Nishihara <yuya@tcha.org>
parents:
29543
diff
changeset
|
528 |
29547
300318b7d66d
chgserver: switch to new forking service
Yuya Nishihara <yuya@tcha.org>
parents:
29546
diff
changeset
|
529 def _bind(self, sock): |
28223
0a853dc9b306
chgserver: auto exit after being idle for too long or lose the socket file
Jun Wu <quark@fb.com>
parents:
28159
diff
changeset
|
530 # use a unique temp address so we can stat the file and do ownership |
0a853dc9b306
chgserver: auto exit after being idle for too long or lose the socket file
Jun Wu <quark@fb.com>
parents:
28159
diff
changeset
|
531 # check later |
29598
a67398726747
chgserver: rename private functions and variables of chgunixservicehandler
Yuya Nishihara <yuya@tcha.org>
parents:
29597
diff
changeset
|
532 tempaddress = _tempaddress(self._realaddress) |
29547
300318b7d66d
chgserver: switch to new forking service
Yuya Nishihara <yuya@tcha.org>
parents:
29546
diff
changeset
|
533 util.bindunixsocket(sock, tempaddress) |
29529
02de1dbd4f6e
chgserver: narrow scope of chdir() to socket.bind()
Yuya Nishihara <yuya@tcha.org>
parents:
29513
diff
changeset
|
534 self._socketstat = os.stat(tempaddress) |
32236
c8b9943c07eb
commandserver: move "listen" responsibility from service to handler
Jun Wu <quark@fb.com>
parents:
32208
diff
changeset
|
535 sock.listen(socket.SOMAXCONN) |
29529
02de1dbd4f6e
chgserver: narrow scope of chdir() to socket.bind()
Yuya Nishihara <yuya@tcha.org>
parents:
29513
diff
changeset
|
536 # rename will replace the old socket file if exists atomically. the |
02de1dbd4f6e
chgserver: narrow scope of chdir() to socket.bind()
Yuya Nishihara <yuya@tcha.org>
parents:
29513
diff
changeset
|
537 # old server will detect ownership change and exit. |
29598
a67398726747
chgserver: rename private functions and variables of chgunixservicehandler
Yuya Nishihara <yuya@tcha.org>
parents:
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diff
changeset
|
538 util.rename(tempaddress, self._realaddress) |
28223
0a853dc9b306
chgserver: auto exit after being idle for too long or lose the socket file
Jun Wu <quark@fb.com>
parents:
28159
diff
changeset
|
539 |
29596
71c197d82b7e
chgserver: reorder functions in chgunixservicehandler
Yuya Nishihara <yuya@tcha.org>
parents:
29595
diff
changeset
|
540 def _createsymlink(self): |
29598
a67398726747
chgserver: rename private functions and variables of chgunixservicehandler
Yuya Nishihara <yuya@tcha.org>
parents:
29597
diff
changeset
|
541 if self._baseaddress == self._realaddress: |
29596
71c197d82b7e
chgserver: reorder functions in chgunixservicehandler
Yuya Nishihara <yuya@tcha.org>
parents:
29595
diff
changeset
|
542 return |
29598
a67398726747
chgserver: rename private functions and variables of chgunixservicehandler
Yuya Nishihara <yuya@tcha.org>
parents:
29597
diff
changeset
|
543 tempaddress = _tempaddress(self._baseaddress) |
a67398726747
chgserver: rename private functions and variables of chgunixservicehandler
Yuya Nishihara <yuya@tcha.org>
parents:
29597
diff
changeset
|
544 os.symlink(os.path.basename(self._realaddress), tempaddress) |
a67398726747
chgserver: rename private functions and variables of chgunixservicehandler
Yuya Nishihara <yuya@tcha.org>
parents:
29597
diff
changeset
|
545 util.rename(tempaddress, self._baseaddress) |
29596
71c197d82b7e
chgserver: reorder functions in chgunixservicehandler
Yuya Nishihara <yuya@tcha.org>
parents:
29595
diff
changeset
|
546 |
29598
a67398726747
chgserver: rename private functions and variables of chgunixservicehandler
Yuya Nishihara <yuya@tcha.org>
parents:
29597
diff
changeset
|
547 def _issocketowner(self): |
28223
0a853dc9b306
chgserver: auto exit after being idle for too long or lose the socket file
Jun Wu <quark@fb.com>
parents:
28159
diff
changeset
|
548 try: |
29598
a67398726747
chgserver: rename private functions and variables of chgunixservicehandler
Yuya Nishihara <yuya@tcha.org>
parents:
29597
diff
changeset
|
549 stat = os.stat(self._realaddress) |
28223
0a853dc9b306
chgserver: auto exit after being idle for too long or lose the socket file
Jun Wu <quark@fb.com>
parents:
28159
diff
changeset
|
550 return (stat.st_ino == self._socketstat.st_ino and |
0a853dc9b306
chgserver: auto exit after being idle for too long or lose the socket file
Jun Wu <quark@fb.com>
parents:
28159
diff
changeset
|
551 stat.st_mtime == self._socketstat.st_mtime) |
0a853dc9b306
chgserver: auto exit after being idle for too long or lose the socket file
Jun Wu <quark@fb.com>
parents:
28159
diff
changeset
|
552 except OSError: |
0a853dc9b306
chgserver: auto exit after being idle for too long or lose the socket file
Jun Wu <quark@fb.com>
parents:
28159
diff
changeset
|
553 return False |
0a853dc9b306
chgserver: auto exit after being idle for too long or lose the socket file
Jun Wu <quark@fb.com>
parents:
28159
diff
changeset
|
554 |
29547
300318b7d66d
chgserver: switch to new forking service
Yuya Nishihara <yuya@tcha.org>
parents:
29546
diff
changeset
|
555 def unlinksocket(self, address): |
29598
a67398726747
chgserver: rename private functions and variables of chgunixservicehandler
Yuya Nishihara <yuya@tcha.org>
parents:
29597
diff
changeset
|
556 if not self._issocketowner(): |
28223
0a853dc9b306
chgserver: auto exit after being idle for too long or lose the socket file
Jun Wu <quark@fb.com>
parents:
28159
diff
changeset
|
557 return |
0a853dc9b306
chgserver: auto exit after being idle for too long or lose the socket file
Jun Wu <quark@fb.com>
parents:
28159
diff
changeset
|
558 # it is possible to have a race condition here that we may |
0a853dc9b306
chgserver: auto exit after being idle for too long or lose the socket file
Jun Wu <quark@fb.com>
parents:
28159
diff
changeset
|
559 # remove another server's socket file. but that's okay |
0a853dc9b306
chgserver: auto exit after being idle for too long or lose the socket file
Jun Wu <quark@fb.com>
parents:
28159
diff
changeset
|
560 # since that server will detect and exit automatically and |
0a853dc9b306
chgserver: auto exit after being idle for too long or lose the socket file
Jun Wu <quark@fb.com>
parents:
28159
diff
changeset
|
561 # the client will start a new server on demand. |
31545 | 562 util.tryunlink(self._realaddress) |
28223
0a853dc9b306
chgserver: auto exit after being idle for too long or lose the socket file
Jun Wu <quark@fb.com>
parents:
28159
diff
changeset
|
563 |
29596
71c197d82b7e
chgserver: reorder functions in chgunixservicehandler
Yuya Nishihara <yuya@tcha.org>
parents:
29595
diff
changeset
|
564 def shouldexit(self): |
29598
a67398726747
chgserver: rename private functions and variables of chgunixservicehandler
Yuya Nishihara <yuya@tcha.org>
parents:
29597
diff
changeset
|
565 if not self._issocketowner(): |
a67398726747
chgserver: rename private functions and variables of chgunixservicehandler
Yuya Nishihara <yuya@tcha.org>
parents:
29597
diff
changeset
|
566 self.ui.debug('%s is not owned, exiting.\n' % self._realaddress) |
29596
71c197d82b7e
chgserver: reorder functions in chgunixservicehandler
Yuya Nishihara <yuya@tcha.org>
parents:
29595
diff
changeset
|
567 return True |
29598
a67398726747
chgserver: rename private functions and variables of chgunixservicehandler
Yuya Nishihara <yuya@tcha.org>
parents:
29597
diff
changeset
|
568 if time.time() - self._lastactive > self._idletimeout: |
29596
71c197d82b7e
chgserver: reorder functions in chgunixservicehandler
Yuya Nishihara <yuya@tcha.org>
parents:
29595
diff
changeset
|
569 self.ui.debug('being idle too long. exiting.\n') |
71c197d82b7e
chgserver: reorder functions in chgunixservicehandler
Yuya Nishihara <yuya@tcha.org>
parents:
29595
diff
changeset
|
570 return True |
71c197d82b7e
chgserver: reorder functions in chgunixservicehandler
Yuya Nishihara <yuya@tcha.org>
parents:
29595
diff
changeset
|
571 return False |
71c197d82b7e
chgserver: reorder functions in chgunixservicehandler
Yuya Nishihara <yuya@tcha.org>
parents:
29595
diff
changeset
|
572 |
71c197d82b7e
chgserver: reorder functions in chgunixservicehandler
Yuya Nishihara <yuya@tcha.org>
parents:
29595
diff
changeset
|
573 def newconnection(self): |
29598
a67398726747
chgserver: rename private functions and variables of chgunixservicehandler
Yuya Nishihara <yuya@tcha.org>
parents:
29597
diff
changeset
|
574 self._lastactive = time.time() |
29596
71c197d82b7e
chgserver: reorder functions in chgunixservicehandler
Yuya Nishihara <yuya@tcha.org>
parents:
29595
diff
changeset
|
575 |
29547
300318b7d66d
chgserver: switch to new forking service
Yuya Nishihara <yuya@tcha.org>
parents:
29546
diff
changeset
|
576 def createcmdserver(self, repo, conn, fin, fout): |
300318b7d66d
chgserver: switch to new forking service
Yuya Nishihara <yuya@tcha.org>
parents:
29546
diff
changeset
|
577 return chgcmdserver(self.ui, repo, fin, fout, conn, |
29598
a67398726747
chgserver: rename private functions and variables of chgunixservicehandler
Yuya Nishihara <yuya@tcha.org>
parents:
29597
diff
changeset
|
578 self._hashstate, self._baseaddress) |
28223
0a853dc9b306
chgserver: auto exit after being idle for too long or lose the socket file
Jun Wu <quark@fb.com>
parents:
28159
diff
changeset
|
579 |
29546
a7513390a9db
chgserver: extract stub factory of service object
Yuya Nishihara <yuya@tcha.org>
parents:
29545
diff
changeset
|
580 def chgunixservice(ui, repo, opts): |
33860
3cfc9070245f
demandimport: disable if chg is being used
Jun Wu <quark@fb.com>
parents:
33499
diff
changeset
|
581 # CHGINTERNALMARK is set by chg client. It is an indication of things are |
3cfc9070245f
demandimport: disable if chg is being used
Jun Wu <quark@fb.com>
parents:
33499
diff
changeset
|
582 # started by chg so other code can do things accordingly, like disabling |
3cfc9070245f
demandimport: disable if chg is being used
Jun Wu <quark@fb.com>
parents:
33499
diff
changeset
|
583 # demandimport or detecting chg client started by chg client. When executed |
3cfc9070245f
demandimport: disable if chg is being used
Jun Wu <quark@fb.com>
parents:
33499
diff
changeset
|
584 # here, CHGINTERNALMARK is no longer useful and hence dropped to make |
3cfc9070245f
demandimport: disable if chg is being used
Jun Wu <quark@fb.com>
parents:
33499
diff
changeset
|
585 # environ cleaner. |
30635
a150173da1c1
py3: replace os.environ with encoding.environ (part 2 of 5)
Pulkit Goyal <7895pulkit@gmail.com>
parents:
30619
diff
changeset
|
586 if 'CHGINTERNALMARK' in encoding.environ: |
a150173da1c1
py3: replace os.environ with encoding.environ (part 2 of 5)
Pulkit Goyal <7895pulkit@gmail.com>
parents:
30619
diff
changeset
|
587 del encoding.environ['CHGINTERNALMARK'] |
30511
1873563e1ede
chgserver: drop CHGINTERNALMARK by chgunixservice()
Yuya Nishihara <yuya@tcha.org>
parents:
30507
diff
changeset
|
588 |
29546
a7513390a9db
chgserver: extract stub factory of service object
Yuya Nishihara <yuya@tcha.org>
parents:
29545
diff
changeset
|
589 if repo: |
30332
318a24b52eeb
spelling: fixes of non-dictionary words
Mads Kiilerich <madski@unity3d.com>
parents:
29841
diff
changeset
|
590 # one chgserver can serve multiple repos. drop repo information |
29546
a7513390a9db
chgserver: extract stub factory of service object
Yuya Nishihara <yuya@tcha.org>
parents:
29545
diff
changeset
|
591 ui.setconfig('bundle', 'mainreporoot', '', 'repo') |
29547
300318b7d66d
chgserver: switch to new forking service
Yuya Nishihara <yuya@tcha.org>
parents:
29546
diff
changeset
|
592 h = chgunixservicehandler(ui) |
300318b7d66d
chgserver: switch to new forking service
Yuya Nishihara <yuya@tcha.org>
parents:
29546
diff
changeset
|
593 return commandserver.unixforkingservice(ui, repo=None, opts=opts, handler=h) |