annotate hgext/chgserver.py @ 28325:9fec3cb8d128

chgserver: update docs Update the docstring to reflect the latest changes
author Jun Wu <quark@fb.com>
date Mon, 29 Feb 2016 14:05:45 +0000
parents cdc6319f6a7d
children ea400a4f32e6
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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 (EXPERIMENTAL)
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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 'getpager' command
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20 checks if pager is enabled and which pager should be executed
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21
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22 'setenv' command
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23 replace os.environ completely
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24
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25 'setumask' command
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26 set umask
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27
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28 'SIGHUP' signal
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29 reload configuration files
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30
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31 Config
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32 ------
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33
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34 ::
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35
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36 [chgserver]
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37 idletimeout = 3600 # seconds, after which an idle server will exit
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38 """
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39
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40 from __future__ import absolute_import
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41
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42 import SocketServer
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43 import errno
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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 signal
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48 import struct
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49 import sys
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50 import threading
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51 import time
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52 import traceback
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53
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54 from mercurial.i18n import _
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55
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56 from mercurial import (
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57 cmdutil,
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58 commands,
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59 commandserver,
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60 dispatch,
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61 error,
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62 extensions,
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63 osutil,
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64 util,
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65 )
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66
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67 # Note for extension authors: ONLY specify testedwith = 'internal' for
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68 # extensions which SHIP WITH MERCURIAL. Non-mainline extensions should
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69 # be specifying the version(s) of Mercurial they are tested with, or
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70 # leave the attribute unspecified.
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71 testedwith = 'internal'
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72
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73 _log = commandserver.log
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74
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75 def _hashlist(items):
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76 """return sha1 hexdigest for a list"""
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77 return util.sha1(str(items)).hexdigest()
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78
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79 # sensitive config sections affecting confighash
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80 _configsections = ['extensions']
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81
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82 # sensitive environment variables affecting confighash
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83 _envre = re.compile(r'''\A(?:
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84 CHGHG
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85 |HG.*
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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 sectionhash = _hashlist(sectionitems)
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110 envitems = [(k, v) for k, v in os.environ.iteritems() if _envre.match(k)]
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111 envhash = _hashlist(sorted(envitems))
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112 return sectionhash[:6] + envhash[:6]
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113
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114 def _getmtimepaths(ui):
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115 """get a list of paths that should be checked to detect change
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116
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117 The list will include:
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118 - extensions (will not cover all files for complex extensions)
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119 - mercurial/__version__.py
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120 - python binary
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121 """
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122 modules = [m for n, m in extensions.extensions(ui)]
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123 try:
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124 from mercurial import __version__
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125 modules.append(__version__)
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126 except ImportError:
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127 pass
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128 files = [sys.executable]
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129 for m in modules:
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130 try:
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131 files.append(inspect.getabsfile(m))
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132 except TypeError:
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133 pass
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134 return sorted(set(files))
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135
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136 def _mtimehash(paths):
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137 """return a quick hash for detecting file changes
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138
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139 mtimehash calls stat on given paths and calculate a hash based on size and
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140 mtime of each file. mtimehash does not read file content because reading is
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141 expensive. therefore it's not 100% reliable for detecting content changes.
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142 it's possible to return different hashes for same file contents.
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143 it's also possible to return a same hash for different file contents for
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144 some carefully crafted situation.
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145
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146 for chgserver, it is designed that once mtimehash changes, the server is
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147 considered outdated immediately and should no longer provide service.
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148 """
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149 def trystat(path):
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150 try:
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151 st = os.stat(path)
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152 return (st.st_mtime, st.st_size)
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153 except OSError:
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154 # could be ENOENT, EPERM etc. not fatal in any case
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155 pass
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diff changeset
156 return _hashlist(map(trystat, paths))[:12]
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diff changeset
157
28277
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158 class hashstate(object):
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159 """a structure storing confighash, mtimehash, paths used for mtimehash"""
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160 def __init__(self, confighash, mtimehash, mtimepaths):
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161 self.confighash = confighash
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162 self.mtimehash = mtimehash
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163 self.mtimepaths = mtimepaths
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diff changeset
164
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diff changeset
165 @staticmethod
cdc6319f6a7d chgserver: add a structure for confighash and mtimehash
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166 def fromui(ui, mtimepaths=None):
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diff changeset
167 if mtimepaths is None:
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diff changeset
168 mtimepaths = _getmtimepaths(ui)
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diff changeset
169 confighash = _confighash(ui)
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diff changeset
170 mtimehash = _mtimehash(mtimepaths)
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diff changeset
171 _log('confighash = %s mtimehash = %s\n' % (confighash, mtimehash))
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172 return hashstate(confighash, mtimehash, mtimepaths)
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173
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174 # copied from hgext/pager.py:uisetup()
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175 def _setuppagercmd(ui, options, cmd):
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176 if not ui.formatted():
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177 return
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178
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179 p = ui.config("pager", "pager", os.environ.get("PAGER"))
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180 usepager = False
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181 always = util.parsebool(options['pager'])
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182 auto = options['pager'] == 'auto'
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183
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184 if not p:
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185 pass
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186 elif always:
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187 usepager = True
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188 elif not auto:
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189 usepager = False
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190 else:
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191 attended = ['annotate', 'cat', 'diff', 'export', 'glog', 'log', 'qdiff']
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192 attend = ui.configlist('pager', 'attend', attended)
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193 ignore = ui.configlist('pager', 'ignore')
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diff changeset
194 cmds, _ = cmdutil.findcmd(cmd, commands.table)
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diff changeset
195
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196 for cmd in cmds:
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197 var = 'attend-%s' % cmd
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198 if ui.config('pager', var):
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diff changeset
199 usepager = ui.configbool('pager', var)
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diff changeset
200 break
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parents:
diff changeset
201 if (cmd in attend or
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parents:
diff changeset
202 (cmd not in ignore and not attend)):
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diff changeset
203 usepager = True
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Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
204 break
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parents:
diff changeset
205
980957333cfa chgserver: import background server extension from cHg
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parents:
diff changeset
206 if usepager:
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parents:
diff changeset
207 ui.setconfig('ui', 'formatted', ui.formatted(), 'pager')
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diff changeset
208 ui.setconfig('ui', 'interactive', False, 'pager')
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diff changeset
209 return p
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parents:
diff changeset
210
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Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
211 _envvarre = re.compile(r'\$[a-zA-Z_]+')
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diff changeset
212
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Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
213 def _clearenvaliases(cmdtable):
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parents:
diff changeset
214 """Remove stale command aliases referencing env vars; variable expansion
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diff changeset
215 is done at dispatch.addaliases()"""
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diff changeset
216 for name, tab in cmdtable.items():
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diff changeset
217 cmddef = tab[0]
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diff changeset
218 if (isinstance(cmddef, dispatch.cmdalias) and
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parents:
diff changeset
219 not cmddef.definition.startswith('!') and # shell alias
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parents:
diff changeset
220 _envvarre.search(cmddef.definition)):
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parents:
diff changeset
221 del cmdtable[name]
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parents:
diff changeset
222
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Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
223 def _newchgui(srcui, csystem):
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Yuya Nishihara <yuya@tcha.org>
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diff changeset
224 class chgui(srcui.__class__):
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parents:
diff changeset
225 def __init__(self, src=None):
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diff changeset
226 super(chgui, self).__init__(src)
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diff changeset
227 if src:
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diff changeset
228 self._csystem = getattr(src, '_csystem', csystem)
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diff changeset
229 else:
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diff changeset
230 self._csystem = csystem
980957333cfa chgserver: import background server extension from cHg
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parents:
diff changeset
231
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parents:
diff changeset
232 def system(self, cmd, environ=None, cwd=None, onerr=None,
980957333cfa chgserver: import background server extension from cHg
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parents:
diff changeset
233 errprefix=None):
980957333cfa chgserver: import background server extension from cHg
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parents:
diff changeset
234 # copied from mercurial/util.py:system()
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parents:
diff changeset
235 self.flush()
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
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diff changeset
236 def py2shell(val):
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
237 if val is None or val is False:
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parents:
diff changeset
238 return '0'
980957333cfa chgserver: import background server extension from cHg
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parents:
diff changeset
239 if val is True:
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parents:
diff changeset
240 return '1'
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Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
241 return str(val)
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Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
242 env = os.environ.copy()
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
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diff changeset
243 if environ:
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Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
244 env.update((k, py2shell(v)) for k, v in environ.iteritems())
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parents:
diff changeset
245 env['HG'] = util.hgexecutable()
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parents:
diff changeset
246 rc = self._csystem(cmd, env, cwd)
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
247 if rc and onerr:
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diff changeset
248 errmsg = '%s %s' % (os.path.basename(cmd.split(None, 1)[0]),
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parents:
diff changeset
249 util.explainexit(rc)[0])
980957333cfa chgserver: import background server extension from cHg
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parents:
diff changeset
250 if errprefix:
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
251 errmsg = '%s: %s' % (errprefix, errmsg)
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Yuya Nishihara <yuya@tcha.org>
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diff changeset
252 raise onerr(errmsg)
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parents:
diff changeset
253 return rc
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parents:
diff changeset
254
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parents:
diff changeset
255 return chgui(srcui)
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parents:
diff changeset
256
28264
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diff changeset
257 def _renewui(srcui, args=None):
3682e201cce6 chgserver: make _renewui load repo and command line configs
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diff changeset
258 if not args:
3682e201cce6 chgserver: make _renewui load repo and command line configs
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diff changeset
259 args = []
3682e201cce6 chgserver: make _renewui load repo and command line configs
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diff changeset
260
27792
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diff changeset
261 newui = srcui.__class__()
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parents:
diff changeset
262 for a in ['fin', 'fout', 'ferr', 'environ']:
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parents:
diff changeset
263 setattr(newui, a, getattr(srcui, a))
980957333cfa chgserver: import background server extension from cHg
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parents:
diff changeset
264 if util.safehasattr(srcui, '_csystem'):
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parents:
diff changeset
265 newui._csystem = srcui._csystem
28264
3682e201cce6 chgserver: make _renewui load repo and command line configs
Jun Wu <quark@fb.com>
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diff changeset
266
3682e201cce6 chgserver: make _renewui load repo and command line configs
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diff changeset
267 # load wd and repo config, copied from dispatch.py
3682e201cce6 chgserver: make _renewui load repo and command line configs
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diff changeset
268 cwds = dispatch._earlygetopt(['--cwd'], args)
3682e201cce6 chgserver: make _renewui load repo and command line configs
Jun Wu <quark@fb.com>
parents: 28262
diff changeset
269 cwd = cwds and os.path.realpath(cwds[-1]) or None
3682e201cce6 chgserver: make _renewui load repo and command line configs
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parents: 28262
diff changeset
270 rpath = dispatch._earlygetopt(["-R", "--repository", "--repo"], args)
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parents: 28262
diff changeset
271 path, newui = dispatch._getlocal(newui, rpath, wd=cwd)
3682e201cce6 chgserver: make _renewui load repo and command line configs
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diff changeset
272
3682e201cce6 chgserver: make _renewui load repo and command line configs
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diff changeset
273 # internal config: extensions.chgserver
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Jun Wu <quark@fb.com>
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diff changeset
274 # copy it. it can only be overrided from command line.
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diff changeset
275 newui.setconfig('extensions', 'chgserver',
3682e201cce6 chgserver: make _renewui load repo and command line configs
Jun Wu <quark@fb.com>
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diff changeset
276 srcui.config('extensions', 'chgserver'), '--config')
3682e201cce6 chgserver: make _renewui load repo and command line configs
Jun Wu <quark@fb.com>
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diff changeset
277
3682e201cce6 chgserver: make _renewui load repo and command line configs
Jun Wu <quark@fb.com>
parents: 28262
diff changeset
278 # command line args
3682e201cce6 chgserver: make _renewui load repo and command line configs
Jun Wu <quark@fb.com>
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diff changeset
279 dispatch._parseconfig(newui, dispatch._earlygetopt(['--config'], args))
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Jun Wu <quark@fb.com>
parents: 28262
diff changeset
280
27792
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diff changeset
281 # stolen from tortoisehg.util.copydynamicconfig()
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parents:
diff changeset
282 for section, name, value in srcui.walkconfig():
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parents:
diff changeset
283 source = srcui.configsource(section, name)
28264
3682e201cce6 chgserver: make _renewui load repo and command line configs
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diff changeset
284 if ':' in source or source == '--config':
3682e201cce6 chgserver: make _renewui load repo and command line configs
Jun Wu <quark@fb.com>
parents: 28262
diff changeset
285 # path:line or command line
27792
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
286 continue
980957333cfa chgserver: import background server extension from cHg
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parents:
diff changeset
287 if source == 'none':
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parents:
diff changeset
288 # ui.configsource returns 'none' by default
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parents:
diff changeset
289 source = ''
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parents:
diff changeset
290 newui.setconfig(section, name, value, source)
980957333cfa chgserver: import background server extension from cHg
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parents:
diff changeset
291 return newui
980957333cfa chgserver: import background server extension from cHg
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parents:
diff changeset
292
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
293 class channeledsystem(object):
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Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
294 """Propagate ui.system() request in the following format:
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parents:
diff changeset
295
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
296 payload length (unsigned int),
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
297 cmd, '\0',
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
298 cwd, '\0',
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
299 envkey, '=', val, '\0',
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
300 ...
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
301 envkey, '=', val
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
302
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
303 and waits:
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
304
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
305 exitcode length (unsigned int),
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
306 exitcode (int)
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
307 """
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
308 def __init__(self, in_, out, channel):
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
309 self.in_ = in_
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
310 self.out = out
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
311 self.channel = channel
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
312
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
313 def __call__(self, cmd, environ, cwd):
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
314 args = [util.quotecommand(cmd), cwd or '.']
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
315 args.extend('%s=%s' % (k, v) for k, v in environ.iteritems())
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
316 data = '\0'.join(args)
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
317 self.out.write(struct.pack('>cI', self.channel, len(data)))
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
318 self.out.write(data)
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
319 self.out.flush()
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
320
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
321 length = self.in_.read(4)
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
322 length, = struct.unpack('>I', length)
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
323 if length != 4:
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
324 raise error.Abort(_('invalid response'))
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
325 rc, = struct.unpack('>i', self.in_.read(4))
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
326 return rc
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
327
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
328 _iochannels = [
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
329 # server.ch, ui.fp, mode
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
330 ('cin', 'fin', 'rb'),
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
331 ('cout', 'fout', 'wb'),
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
332 ('cerr', 'ferr', 'wb'),
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
333 ]
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
334
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
335 class chgcmdserver(commandserver.server):
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
336 def __init__(self, ui, repo, fin, fout, sock):
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
337 super(chgcmdserver, self).__init__(
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
338 _newchgui(ui, channeledsystem(fin, fout, 'S')), repo, fin, fout)
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
339 self.clientsock = sock
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
340 self._oldios = [] # original (self.ch, ui.fp, fd) before "attachio"
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
341
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
342 def cleanup(self):
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
343 # dispatch._runcatch() does not flush outputs if exception is not
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
344 # handled by dispatch._dispatch()
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
345 self.ui.flush()
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
346 self._restoreio()
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
347
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
348 def attachio(self):
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
349 """Attach to client's stdio passed via unix domain socket; all
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
350 channels except cresult will no longer be used
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
351 """
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
352 # tell client to sendmsg() with 1-byte payload, which makes it
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
353 # distinctive from "attachio\n" command consumed by client.read()
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
354 self.clientsock.sendall(struct.pack('>cI', 'I', 1))
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
355 clientfds = osutil.recvfds(self.clientsock.fileno())
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
356 _log('received fds: %r\n' % clientfds)
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
357
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
358 ui = self.ui
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
359 ui.flush()
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
360 first = self._saveio()
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
361 for fd, (cn, fn, mode) in zip(clientfds, _iochannels):
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
362 assert fd > 0
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
363 fp = getattr(ui, fn)
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
364 os.dup2(fd, fp.fileno())
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
365 os.close(fd)
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
366 if not first:
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
367 continue
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
368 # reset buffering mode when client is first attached. as we want
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
369 # to see output immediately on pager, the mode stays unchanged
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
370 # when client re-attached. ferr is unchanged because it should
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
371 # be unbuffered no matter if it is a tty or not.
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
372 if fn == 'ferr':
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
373 newfp = fp
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
374 else:
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
375 # make it line buffered explicitly because the default is
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
376 # decided on first write(), where fout could be a pager.
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
377 if fp.isatty():
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
378 bufsize = 1 # line buffered
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
379 else:
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
380 bufsize = -1 # system default
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
381 newfp = os.fdopen(fp.fileno(), mode, bufsize)
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
382 setattr(ui, fn, newfp)
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
383 setattr(self, cn, newfp)
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
384
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
385 self.cresult.write(struct.pack('>i', len(clientfds)))
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
386
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
387 def _saveio(self):
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
388 if self._oldios:
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
389 return False
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
390 ui = self.ui
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
391 for cn, fn, _mode in _iochannels:
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
392 ch = getattr(self, cn)
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
393 fp = getattr(ui, fn)
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
394 fd = os.dup(fp.fileno())
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
395 self._oldios.append((ch, fp, fd))
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
396 return True
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
397
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
398 def _restoreio(self):
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
399 ui = self.ui
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
400 for (ch, fp, fd), (cn, fn, _mode) in zip(self._oldios, _iochannels):
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
401 newfp = getattr(ui, fn)
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
402 # close newfp while it's associated with client; otherwise it
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
403 # would be closed when newfp is deleted
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
404 if newfp is not fp:
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
405 newfp.close()
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
406 # restore original fd: fp is open again
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
407 os.dup2(fd, fp.fileno())
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
408 os.close(fd)
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
409 setattr(self, cn, ch)
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
410 setattr(ui, fn, fp)
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
411 del self._oldios[:]
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
412
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
413 def chdir(self):
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
414 """Change current directory
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
415
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
416 Note that the behavior of --cwd option is bit different from this.
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
417 It does not affect --config parameter.
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
418 """
28158
7cc57a531f0c chgserver: use _readlist and _readstr
Jun Wu <quark@fb.com>
parents: 28014
diff changeset
419 path = self._readstr()
7cc57a531f0c chgserver: use _readlist and _readstr
Jun Wu <quark@fb.com>
parents: 28014
diff changeset
420 if not path:
27792
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
421 return
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
422 _log('chdir to %r\n' % path)
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
423 os.chdir(path)
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
424
28159
d2d04d1d2f92 chgserver: add setumask method
Jun Wu <quark@fb.com>
parents: 28158
diff changeset
425 def setumask(self):
d2d04d1d2f92 chgserver: add setumask method
Jun Wu <quark@fb.com>
parents: 28158
diff changeset
426 """Change umask"""
d2d04d1d2f92 chgserver: add setumask method
Jun Wu <quark@fb.com>
parents: 28158
diff changeset
427 mask = struct.unpack('>I', self._read(4))[0]
d2d04d1d2f92 chgserver: add setumask method
Jun Wu <quark@fb.com>
parents: 28158
diff changeset
428 _log('setumask %r\n' % mask)
d2d04d1d2f92 chgserver: add setumask method
Jun Wu <quark@fb.com>
parents: 28158
diff changeset
429 os.umask(mask)
d2d04d1d2f92 chgserver: add setumask method
Jun Wu <quark@fb.com>
parents: 28158
diff changeset
430
27792
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
431 def getpager(self):
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
432 """Read cmdargs and write pager command to r-channel if enabled
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
433
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
434 If pager isn't enabled, this writes '\0' because channeledoutput
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
435 does not allow to write empty data.
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
436 """
28158
7cc57a531f0c chgserver: use _readlist and _readstr
Jun Wu <quark@fb.com>
parents: 28014
diff changeset
437 args = self._readlist()
27792
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
438 try:
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
439 cmd, _func, args, options, _cmdoptions = dispatch._parse(self.ui,
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
440 args)
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
441 except (error.Abort, error.AmbiguousCommand, error.CommandError,
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
442 error.UnknownCommand):
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
443 cmd = None
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
444 options = {}
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
445 if not cmd or 'pager' not in options:
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
446 self.cresult.write('\0')
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
447 return
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
448
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
449 pagercmd = _setuppagercmd(self.ui, options, cmd)
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
450 if pagercmd:
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
451 self.cresult.write(pagercmd)
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
452 else:
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
453 self.cresult.write('\0')
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
454
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
455 def setenv(self):
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
456 """Clear and update os.environ
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
457
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
458 Note that not all variables can make an effect on the running process.
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
459 """
28158
7cc57a531f0c chgserver: use _readlist and _readstr
Jun Wu <quark@fb.com>
parents: 28014
diff changeset
460 l = self._readlist()
27792
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
461 try:
28158
7cc57a531f0c chgserver: use _readlist and _readstr
Jun Wu <quark@fb.com>
parents: 28014
diff changeset
462 newenv = dict(s.split('=', 1) for s in l)
27792
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
463 except ValueError:
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
464 raise ValueError('unexpected value in setenv request')
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
465
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
466 diffkeys = set(k for k in set(os.environ.keys() + newenv.keys())
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
467 if os.environ.get(k) != newenv.get(k))
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
468 _log('change env: %r\n' % sorted(diffkeys))
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
469
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
470 os.environ.clear()
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
471 os.environ.update(newenv)
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
472
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
473 if set(['HGPLAIN', 'HGPLAINEXCEPT']) & diffkeys:
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
474 # reload config so that ui.plain() takes effect
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
475 self.ui = _renewui(self.ui)
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
476
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
477 _clearenvaliases(commands.table)
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
478
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
479 capabilities = commandserver.server.capabilities.copy()
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
480 capabilities.update({'attachio': attachio,
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
481 'chdir': chdir,
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
482 'getpager': getpager,
28159
d2d04d1d2f92 chgserver: add setumask method
Jun Wu <quark@fb.com>
parents: 28158
diff changeset
483 'setenv': setenv,
d2d04d1d2f92 chgserver: add setumask method
Jun Wu <quark@fb.com>
parents: 28158
diff changeset
484 'setumask': setumask})
27792
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
485
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
486 # copied from mercurial/commandserver.py
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
487 class _requesthandler(SocketServer.StreamRequestHandler):
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
488 def handle(self):
28014
83fc0c055664 chgserver: create new process group after fork (issue5051)
Jun Wu <quark@fb.com>
parents: 27793
diff changeset
489 # use a different process group from the master process, making this
83fc0c055664 chgserver: create new process group after fork (issue5051)
Jun Wu <quark@fb.com>
parents: 27793
diff changeset
490 # process pass kernel "is_current_pgrp_orphaned" check so signals like
83fc0c055664 chgserver: create new process group after fork (issue5051)
Jun Wu <quark@fb.com>
parents: 27793
diff changeset
491 # SIGTSTP, SIGTTIN, SIGTTOU are not ignored.
83fc0c055664 chgserver: create new process group after fork (issue5051)
Jun Wu <quark@fb.com>
parents: 27793
diff changeset
492 os.setpgid(0, 0)
27792
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
493 ui = self.server.ui
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
494 repo = self.server.repo
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
495 sv = chgcmdserver(ui, repo, self.rfile, self.wfile, self.connection)
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
496 try:
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
497 try:
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
498 sv.serve()
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
499 # handle exceptions that may be raised by command server. most of
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
500 # known exceptions are caught by dispatch.
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
501 except error.Abort as inst:
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
502 ui.warn(_('abort: %s\n') % inst)
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
503 except IOError as inst:
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
504 if inst.errno != errno.EPIPE:
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
505 raise
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
506 except KeyboardInterrupt:
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
507 pass
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
508 finally:
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
509 sv.cleanup()
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
510 except: # re-raises
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
511 # also write traceback to error channel. otherwise client cannot
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
512 # see it because it is written to server's stderr by default.
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
513 traceback.print_exc(file=sv.cerr)
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
514 raise
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
515
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
516 def _tempaddress(address):
0a853dc9b306 chgserver: auto exit after being idle for too long or lose the socket file
Jun Wu <quark@fb.com>
parents: 28159
diff changeset
517 return '%s.%d.tmp' % (address, os.getpid())
0a853dc9b306 chgserver: auto exit after being idle for too long or lose the socket file
Jun Wu <quark@fb.com>
parents: 28159
diff changeset
518
0a853dc9b306 chgserver: auto exit after being idle for too long or lose the socket file
Jun Wu <quark@fb.com>
parents: 28159
diff changeset
519 class AutoExitMixIn: # use old-style to comply with SocketServer design
0a853dc9b306 chgserver: auto exit after being idle for too long or lose the socket file
Jun Wu <quark@fb.com>
parents: 28159
diff changeset
520 lastactive = time.time()
0a853dc9b306 chgserver: auto exit after being idle for too long or lose the socket file
Jun Wu <quark@fb.com>
parents: 28159
diff changeset
521 idletimeout = 3600 # default 1 hour
0a853dc9b306 chgserver: auto exit after being idle for too long or lose the socket file
Jun Wu <quark@fb.com>
parents: 28159
diff changeset
522
0a853dc9b306 chgserver: auto exit after being idle for too long or lose the socket file
Jun Wu <quark@fb.com>
parents: 28159
diff changeset
523 def startautoexitthread(self):
0a853dc9b306 chgserver: auto exit after being idle for too long or lose the socket file
Jun Wu <quark@fb.com>
parents: 28159
diff changeset
524 # note: the auto-exit check here is cheap enough to not use a thread,
0a853dc9b306 chgserver: auto exit after being idle for too long or lose the socket file
Jun Wu <quark@fb.com>
parents: 28159
diff changeset
525 # be done in serve_forever. however SocketServer is hook-unfriendly,
0a853dc9b306 chgserver: auto exit after being idle for too long or lose the socket file
Jun Wu <quark@fb.com>
parents: 28159
diff changeset
526 # you simply cannot hook serve_forever without copying a lot of code.
0a853dc9b306 chgserver: auto exit after being idle for too long or lose the socket file
Jun Wu <quark@fb.com>
parents: 28159
diff changeset
527 # besides, serve_forever's docstring suggests using thread.
0a853dc9b306 chgserver: auto exit after being idle for too long or lose the socket file
Jun Wu <quark@fb.com>
parents: 28159
diff changeset
528 thread = threading.Thread(target=self._autoexitloop)
0a853dc9b306 chgserver: auto exit after being idle for too long or lose the socket file
Jun Wu <quark@fb.com>
parents: 28159
diff changeset
529 thread.daemon = True
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 thread.start()
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
0a853dc9b306 chgserver: auto exit after being idle for too long or lose the socket file
Jun Wu <quark@fb.com>
parents: 28159
diff changeset
532 def _autoexitloop(self, interval=1):
0a853dc9b306 chgserver: auto exit after being idle for too long or lose the socket file
Jun Wu <quark@fb.com>
parents: 28159
diff changeset
533 while True:
0a853dc9b306 chgserver: auto exit after being idle for too long or lose the socket file
Jun Wu <quark@fb.com>
parents: 28159
diff changeset
534 time.sleep(interval)
0a853dc9b306 chgserver: auto exit after being idle for too long or lose the socket file
Jun Wu <quark@fb.com>
parents: 28159
diff changeset
535 if not self.issocketowner():
0a853dc9b306 chgserver: auto exit after being idle for too long or lose the socket file
Jun Wu <quark@fb.com>
parents: 28159
diff changeset
536 _log('%s is not owned, exiting.\n' % self.server_address)
0a853dc9b306 chgserver: auto exit after being idle for too long or lose the socket file
Jun Wu <quark@fb.com>
parents: 28159
diff changeset
537 break
0a853dc9b306 chgserver: auto exit after being idle for too long or lose the socket file
Jun Wu <quark@fb.com>
parents: 28159
diff changeset
538 if time.time() - self.lastactive > self.idletimeout:
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 _log('being idle too long. exiting.\n')
0a853dc9b306 chgserver: auto exit after being idle for too long or lose the socket file
Jun Wu <quark@fb.com>
parents: 28159
diff changeset
540 break
0a853dc9b306 chgserver: auto exit after being idle for too long or lose the socket file
Jun Wu <quark@fb.com>
parents: 28159
diff changeset
541 self.shutdown()
0a853dc9b306 chgserver: auto exit after being idle for too long or lose the socket file
Jun Wu <quark@fb.com>
parents: 28159
diff changeset
542
0a853dc9b306 chgserver: auto exit after being idle for too long or lose the socket file
Jun Wu <quark@fb.com>
parents: 28159
diff changeset
543 def process_request(self, request, address):
0a853dc9b306 chgserver: auto exit after being idle for too long or lose the socket file
Jun Wu <quark@fb.com>
parents: 28159
diff changeset
544 self.lastactive = time.time()
0a853dc9b306 chgserver: auto exit after being idle for too long or lose the socket file
Jun Wu <quark@fb.com>
parents: 28159
diff changeset
545 return SocketServer.ForkingMixIn.process_request(
0a853dc9b306 chgserver: auto exit after being idle for too long or lose the socket file
Jun Wu <quark@fb.com>
parents: 28159
diff changeset
546 self, request, address)
0a853dc9b306 chgserver: auto exit after being idle for too long or lose the socket file
Jun Wu <quark@fb.com>
parents: 28159
diff changeset
547
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 def server_bind(self):
0a853dc9b306 chgserver: auto exit after being idle for too long or lose the socket file
Jun Wu <quark@fb.com>
parents: 28159
diff changeset
549 # 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
550 # check later
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 tempaddress = _tempaddress(self.server_address)
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 self.socket.bind(tempaddress)
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 self._socketstat = os.stat(tempaddress)
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 # rename will replace the old socket file if exists atomically. the
0a853dc9b306 chgserver: auto exit after being idle for too long or lose the socket file
Jun Wu <quark@fb.com>
parents: 28159
diff changeset
555 # old server will detect ownership change and exit.
0a853dc9b306 chgserver: auto exit after being idle for too long or lose the socket file
Jun Wu <quark@fb.com>
parents: 28159
diff changeset
556 util.rename(tempaddress, self.server_address)
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
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 def issocketowner(self):
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 try:
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 stat = os.stat(self.server_address)
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 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
562 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
563 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
564 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
565
0a853dc9b306 chgserver: auto exit after being idle for too long or lose the socket file
Jun Wu <quark@fb.com>
parents: 28159
diff changeset
566 def unlinksocketfile(self):
0a853dc9b306 chgserver: auto exit after being idle for too long or lose the socket file
Jun Wu <quark@fb.com>
parents: 28159
diff changeset
567 if not self.issocketowner():
0a853dc9b306 chgserver: auto exit after being idle for too long or lose the socket file
Jun Wu <quark@fb.com>
parents: 28159
diff changeset
568 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
569 # 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
570 # 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
571 # 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
572 # the client will start a new server on demand.
0a853dc9b306 chgserver: auto exit after being idle for too long or lose the socket file
Jun Wu <quark@fb.com>
parents: 28159
diff changeset
573 try:
0a853dc9b306 chgserver: auto exit after being idle for too long or lose the socket file
Jun Wu <quark@fb.com>
parents: 28159
diff changeset
574 os.unlink(self.server_address)
0a853dc9b306 chgserver: auto exit after being idle for too long or lose the socket file
Jun Wu <quark@fb.com>
parents: 28159
diff changeset
575 except OSError as exc:
0a853dc9b306 chgserver: auto exit after being idle for too long or lose the socket file
Jun Wu <quark@fb.com>
parents: 28159
diff changeset
576 if exc.errno != errno.ENOENT:
0a853dc9b306 chgserver: auto exit after being idle for too long or lose the socket file
Jun Wu <quark@fb.com>
parents: 28159
diff changeset
577 raise
0a853dc9b306 chgserver: auto exit after being idle for too long or lose the socket file
Jun Wu <quark@fb.com>
parents: 28159
diff changeset
578
27792
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
579 class chgunixservice(commandserver.unixservice):
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
580 def init(self):
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
581 # drop options set for "hg serve --cmdserver" command
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
582 self.ui.setconfig('progress', 'assume-tty', None)
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
583 signal.signal(signal.SIGHUP, self._reloadconfig)
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
584 class cls(AutoExitMixIn, SocketServer.ForkingMixIn,
0a853dc9b306 chgserver: auto exit after being idle for too long or lose the socket file
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585 SocketServer.UnixStreamServer):
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586 ui = self.ui
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587 repo = self.repo
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588 self.server = cls(self.address, _requesthandler)
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589 self.server.idletimeout = self.ui.configint(
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590 'chgserver', 'idletimeout', self.server.idletimeout)
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591 self.server.startautoexitthread()
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592 # avoid writing "listening at" message to stdout before attachio
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593 # request, which calls setvbuf()
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594
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595 def _reloadconfig(self, signum, frame):
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596 self.ui = self.server.ui = _renewui(self.ui)
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597
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598 def run(self):
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599 try:
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600 self.server.serve_forever()
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601 finally:
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602 self.server.unlinksocketfile()
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603
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604 def uisetup(ui):
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605 commandserver._servicemap['chgunix'] = chgunixservice
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606
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607 # CHGINTERNALMARK is temporarily set by chg client to detect if chg will
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608 # start another chg. drop it to avoid possible side effects.
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609 if 'CHGINTERNALMARK' in os.environ:
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610 del os.environ['CHGINTERNALMARK']