annotate hgext/chgserver.py @ 28578:66d085e55ecd

filemerge: indicate that local/other are p1/p2
author timeless <timeless@mozdev.org>
date Thu, 17 Mar 2016 00:36:01 +0000
parents 5346e9b910fc
children 82cee85d5274
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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 'validate' command
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29 reload the config and check if the server is up to date
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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 skiphash = False # whether to skip config or env change checks
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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 SocketServer
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44 import errno
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45 import gc
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46 import inspect
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47 import os
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48 import re
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49 import struct
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50 import sys
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51 import threading
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52 import time
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53 import traceback
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54
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55 from mercurial.i18n import _
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56
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57 from mercurial import (
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58 cmdutil,
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59 commands,
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60 commandserver,
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61 dispatch,
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62 error,
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63 extensions,
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64 osutil,
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65 util,
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66 )
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67
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68 # Note for extension authors: ONLY specify testedwith = 'internal' for
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69 # extensions which SHIP WITH MERCURIAL. Non-mainline extensions should
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70 # be specifying the version(s) of Mercurial they are tested with, or
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71 # leave the attribute unspecified.
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72 testedwith = 'internal'
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73
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74 _log = commandserver.log
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75
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76 def _hashlist(items):
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77 """return sha1 hexdigest for a list"""
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78 return util.sha1(str(items)).hexdigest()
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79
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80 # sensitive config sections affecting confighash
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81 _configsections = [
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82 'extdiff', # uisetup will register new commands
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83 'extensions',
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84 ]
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85
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86 # sensitive environment variables affecting confighash
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87 _envre = re.compile(r'''\A(?:
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88 CHGHG
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89 |HG.*
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90 |LANG(?:UAGE)?
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91 |LC_.*
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92 |LD_.*
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93 |PATH
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94 |PYTHON.*
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95 |TERM(?:INFO)?
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96 |TZ
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97 )\Z''', re.X)
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98
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99 def _confighash(ui):
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100 """return a quick hash for detecting config/env changes
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101
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102 confighash is the hash of sensitive config items and environment variables.
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103
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104 for chgserver, it is designed that once confighash changes, the server is
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105 not qualified to serve its client and should redirect the client to a new
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106 server. different from mtimehash, confighash change will not mark the
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107 server outdated and exit since the user can have different configs at the
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108 same time.
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109 """
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110 sectionitems = []
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111 for section in _configsections:
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112 sectionitems.append(ui.configitems(section))
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113 sectionhash = _hashlist(sectionitems)
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114 envitems = [(k, v) for k, v in os.environ.iteritems() if _envre.match(k)]
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115 envhash = _hashlist(sorted(envitems))
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116 return sectionhash[:6] + envhash[:6]
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117
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118 def _getmtimepaths(ui):
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119 """get a list of paths that should be checked to detect change
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120
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121 The list will include:
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122 - extensions (will not cover all files for complex extensions)
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123 - mercurial/__version__.py
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124 - python binary
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125 """
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126 modules = [m for n, m in extensions.extensions(ui)]
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127 try:
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128 from mercurial import __version__
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129 modules.append(__version__)
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130 except ImportError:
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131 pass
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132 files = [sys.executable]
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133 for m in modules:
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134 try:
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135 files.append(inspect.getabsfile(m))
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136 except TypeError:
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137 pass
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138 return sorted(set(files))
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139
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140 def _mtimehash(paths):
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141 """return a quick hash for detecting file changes
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142
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143 mtimehash calls stat on given paths and calculate a hash based on size and
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144 mtime of each file. mtimehash does not read file content because reading is
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145 expensive. therefore it's not 100% reliable for detecting content changes.
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146 it's possible to return different hashes for same file contents.
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147 it's also possible to return a same hash for different file contents for
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148 some carefully crafted situation.
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149
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150 for chgserver, it is designed that once mtimehash changes, the server is
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151 considered outdated immediately and should no longer provide service.
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152 """
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153 def trystat(path):
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diff changeset
154 try:
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155 st = os.stat(path)
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156 return (st.st_mtime, st.st_size)
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157 except OSError:
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158 # could be ENOENT, EPERM etc. not fatal in any case
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159 pass
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160 return _hashlist(map(trystat, paths))[:12]
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161
28277
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162 class hashstate(object):
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163 """a structure storing confighash, mtimehash, paths used for mtimehash"""
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164 def __init__(self, confighash, mtimehash, mtimepaths):
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165 self.confighash = confighash
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166 self.mtimehash = mtimehash
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167 self.mtimepaths = mtimepaths
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168
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169 @staticmethod
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170 def fromui(ui, mtimepaths=None):
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diff changeset
171 if mtimepaths is None:
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172 mtimepaths = _getmtimepaths(ui)
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173 confighash = _confighash(ui)
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174 mtimehash = _mtimehash(mtimepaths)
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175 _log('confighash = %s mtimehash = %s\n' % (confighash, mtimehash))
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176 return hashstate(confighash, mtimehash, mtimepaths)
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177
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178 # copied from hgext/pager.py:uisetup()
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179 def _setuppagercmd(ui, options, cmd):
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180 if not ui.formatted():
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181 return
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182
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183 p = ui.config("pager", "pager", os.environ.get("PAGER"))
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184 usepager = False
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185 always = util.parsebool(options['pager'])
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186 auto = options['pager'] == 'auto'
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187
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188 if not p:
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189 pass
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190 elif always:
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191 usepager = True
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192 elif not auto:
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193 usepager = False
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194 else:
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195 attended = ['annotate', 'cat', 'diff', 'export', 'glog', 'log', 'qdiff']
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196 attend = ui.configlist('pager', 'attend', attended)
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197 ignore = ui.configlist('pager', 'ignore')
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198 cmds, _ = cmdutil.findcmd(cmd, commands.table)
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199
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200 for cmd in cmds:
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201 var = 'attend-%s' % cmd
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202 if ui.config('pager', var):
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203 usepager = ui.configbool('pager', var)
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204 break
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diff changeset
205 if (cmd in attend or
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diff changeset
206 (cmd not in ignore and not attend)):
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207 usepager = True
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diff changeset
208 break
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diff changeset
209
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210 if usepager:
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diff changeset
211 ui.setconfig('ui', 'formatted', ui.formatted(), 'pager')
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diff changeset
212 ui.setconfig('ui', 'interactive', False, 'pager')
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213 return p
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214
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diff changeset
215 _envvarre = re.compile(r'\$[a-zA-Z_]+')
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diff changeset
216
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217 def _clearenvaliases(cmdtable):
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218 """Remove stale command aliases referencing env vars; variable expansion
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219 is done at dispatch.addaliases()"""
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220 for name, tab in cmdtable.items():
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221 cmddef = tab[0]
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222 if (isinstance(cmddef, dispatch.cmdalias) and
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223 not cmddef.definition.startswith('!') and # shell alias
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diff changeset
224 _envvarre.search(cmddef.definition)):
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225 del cmdtable[name]
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diff changeset
226
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diff changeset
227 def _newchgui(srcui, csystem):
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diff changeset
228 class chgui(srcui.__class__):
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229 def __init__(self, src=None):
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230 super(chgui, self).__init__(src)
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231 if src:
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232 self._csystem = getattr(src, '_csystem', csystem)
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diff changeset
233 else:
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diff changeset
234 self._csystem = csystem
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diff changeset
235
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diff changeset
236 def system(self, cmd, environ=None, cwd=None, onerr=None,
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diff changeset
237 errprefix=None):
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parents:
diff changeset
238 # copied from mercurial/util.py:system()
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diff changeset
239 self.flush()
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diff changeset
240 def py2shell(val):
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parents:
diff changeset
241 if val is None or val is False:
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diff changeset
242 return '0'
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parents:
diff changeset
243 if val is True:
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244 return '1'
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diff changeset
245 return str(val)
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parents:
diff changeset
246 env = os.environ.copy()
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diff changeset
247 if environ:
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diff changeset
248 env.update((k, py2shell(v)) for k, v in environ.iteritems())
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diff changeset
249 env['HG'] = util.hgexecutable()
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diff changeset
250 rc = self._csystem(cmd, env, cwd)
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diff changeset
251 if rc and onerr:
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diff changeset
252 errmsg = '%s %s' % (os.path.basename(cmd.split(None, 1)[0]),
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diff changeset
253 util.explainexit(rc)[0])
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diff changeset
254 if errprefix:
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diff changeset
255 errmsg = '%s: %s' % (errprefix, errmsg)
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diff changeset
256 raise onerr(errmsg)
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257 return rc
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diff changeset
258
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diff changeset
259 return chgui(srcui)
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diff changeset
260
28264
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diff changeset
261 def _renewui(srcui, args=None):
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diff changeset
262 if not args:
3682e201cce6 chgserver: make _renewui load repo and command line configs
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diff changeset
263 args = []
3682e201cce6 chgserver: make _renewui load repo and command line configs
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diff changeset
264
27792
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265 newui = srcui.__class__()
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diff changeset
266 for a in ['fin', 'fout', 'ferr', 'environ']:
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diff changeset
267 setattr(newui, a, getattr(srcui, a))
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268 if util.safehasattr(srcui, '_csystem'):
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diff changeset
269 newui._csystem = srcui._csystem
28264
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diff changeset
270
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diff changeset
271 # load wd and repo config, copied from dispatch.py
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diff changeset
272 cwds = dispatch._earlygetopt(['--cwd'], args)
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diff changeset
273 cwd = cwds and os.path.realpath(cwds[-1]) or None
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diff changeset
274 rpath = dispatch._earlygetopt(["-R", "--repository", "--repo"], args)
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diff changeset
275 path, newui = dispatch._getlocal(newui, rpath, wd=cwd)
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diff changeset
276
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diff changeset
277 # internal config: extensions.chgserver
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diff changeset
278 # copy it. it can only be overrided from command line.
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diff changeset
279 newui.setconfig('extensions', 'chgserver',
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diff changeset
280 srcui.config('extensions', 'chgserver'), '--config')
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diff changeset
281
3682e201cce6 chgserver: make _renewui load repo and command line configs
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diff changeset
282 # command line args
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diff changeset
283 dispatch._parseconfig(newui, dispatch._earlygetopt(['--config'], args))
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diff changeset
284
27792
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diff changeset
285 # stolen from tortoisehg.util.copydynamicconfig()
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parents:
diff changeset
286 for section, name, value in srcui.walkconfig():
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parents:
diff changeset
287 source = srcui.configsource(section, name)
28264
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diff changeset
288 if ':' in source or source == '--config':
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diff changeset
289 # path:line or command line
27792
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parents:
diff changeset
290 continue
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parents:
diff changeset
291 if source == 'none':
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parents:
diff changeset
292 # ui.configsource returns 'none' by default
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parents:
diff changeset
293 source = ''
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parents:
diff changeset
294 newui.setconfig(section, name, value, source)
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parents:
diff changeset
295 return newui
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parents:
diff changeset
296
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297 class channeledsystem(object):
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298 """Propagate ui.system() request in the following format:
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299
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300 payload length (unsigned int),
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301 cmd, '\0',
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302 cwd, '\0',
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303 envkey, '=', val, '\0',
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304 ...
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305 envkey, '=', val
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306
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307 and waits:
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308
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309 exitcode length (unsigned int),
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310 exitcode (int)
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311 """
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312 def __init__(self, in_, out, channel):
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313 self.in_ = in_
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314 self.out = out
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315 self.channel = channel
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316
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317 def __call__(self, cmd, environ, cwd):
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parents: 28511
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318 args = [util.quotecommand(cmd), os.path.abspath(cwd or '.')]
27792
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319 args.extend('%s=%s' % (k, v) for k, v in environ.iteritems())
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320 data = '\0'.join(args)
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321 self.out.write(struct.pack('>cI', self.channel, len(data)))
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322 self.out.write(data)
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323 self.out.flush()
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324
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325 length = self.in_.read(4)
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326 length, = struct.unpack('>I', length)
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327 if length != 4:
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328 raise error.Abort(_('invalid response'))
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diff changeset
329 rc, = struct.unpack('>i', self.in_.read(4))
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330 return rc
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331
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332 _iochannels = [
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333 # server.ch, ui.fp, mode
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334 ('cin', 'fin', 'rb'),
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335 ('cout', 'fout', 'wb'),
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336 ('cerr', 'ferr', 'wb'),
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337 ]
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338
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339 class chgcmdserver(commandserver.server):
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340 def __init__(self, ui, repo, fin, fout, sock, hashstate, baseaddress):
27792
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341 super(chgcmdserver, self).__init__(
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diff changeset
342 _newchgui(ui, channeledsystem(fin, fout, 'S')), repo, fin, fout)
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343 self.clientsock = sock
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344 self._oldios = [] # original (self.ch, ui.fp, fd) before "attachio"
28328
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345 self.hashstate = hashstate
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diff changeset
346 self.baseaddress = baseaddress
28350
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347 if hashstate is not None:
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diff changeset
348 self.capabilities = self.capabilities.copy()
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diff changeset
349 self.capabilities['validate'] = chgcmdserver.validate
27792
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350
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diff changeset
351 def cleanup(self):
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diff changeset
352 # dispatch._runcatch() does not flush outputs if exception is not
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diff changeset
353 # handled by dispatch._dispatch()
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354 self.ui.flush()
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355 self._restoreio()
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356
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357 def attachio(self):
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diff changeset
358 """Attach to client's stdio passed via unix domain socket; all
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parents:
diff changeset
359 channels except cresult will no longer be used
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parents:
diff changeset
360 """
980957333cfa chgserver: import background server extension from cHg
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parents:
diff changeset
361 # 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
362 # distinctive from "attachio\n" command consumed by client.read()
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parents:
diff changeset
363 self.clientsock.sendall(struct.pack('>cI', 'I', 1))
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parents:
diff changeset
364 clientfds = osutil.recvfds(self.clientsock.fileno())
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parents:
diff changeset
365 _log('received fds: %r\n' % clientfds)
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diff changeset
366
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diff changeset
367 ui = self.ui
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diff changeset
368 ui.flush()
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parents:
diff changeset
369 first = self._saveio()
980957333cfa chgserver: import background server extension from cHg
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parents:
diff changeset
370 for fd, (cn, fn, mode) in zip(clientfds, _iochannels):
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parents:
diff changeset
371 assert fd > 0
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parents:
diff changeset
372 fp = getattr(ui, fn)
980957333cfa chgserver: import background server extension from cHg
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diff changeset
373 os.dup2(fd, fp.fileno())
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diff changeset
374 os.close(fd)
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parents:
diff changeset
375 if not first:
980957333cfa chgserver: import background server extension from cHg
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parents:
diff changeset
376 continue
980957333cfa chgserver: import background server extension from cHg
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parents:
diff changeset
377 # reset buffering mode when client is first attached. as we want
980957333cfa chgserver: import background server extension from cHg
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parents:
diff changeset
378 # to see output immediately on pager, the mode stays unchanged
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Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
379 # when client re-attached. ferr is unchanged because it should
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parents:
diff changeset
380 # be unbuffered no matter if it is a tty or not.
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parents:
diff changeset
381 if fn == 'ferr':
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parents:
diff changeset
382 newfp = fp
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
383 else:
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
384 # 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
385 # 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
386 if fp.isatty():
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
387 bufsize = 1 # line buffered
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
388 else:
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parents:
diff changeset
389 bufsize = -1 # system default
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diff changeset
390 newfp = os.fdopen(fp.fileno(), mode, bufsize)
980957333cfa chgserver: import background server extension from cHg
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parents:
diff changeset
391 setattr(ui, fn, newfp)
980957333cfa chgserver: import background server extension from cHg
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parents:
diff changeset
392 setattr(self, cn, newfp)
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parents:
diff changeset
393
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parents:
diff changeset
394 self.cresult.write(struct.pack('>i', len(clientfds)))
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
395
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
396 def _saveio(self):
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
397 if self._oldios:
980957333cfa chgserver: import background server extension from cHg
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parents:
diff changeset
398 return False
980957333cfa chgserver: import background server extension from cHg
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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 cn, fn, _mode in _iochannels:
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
401 ch = getattr(self, cn)
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
402 fp = getattr(ui, fn)
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
403 fd = os.dup(fp.fileno())
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
404 self._oldios.append((ch, fp, fd))
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
405 return True
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
406
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
407 def _restoreio(self):
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
408 ui = self.ui
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
409 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
410 newfp = getattr(ui, fn)
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
411 # 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
412 # would be closed when newfp is deleted
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
413 if newfp is not fp:
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
414 newfp.close()
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
415 # restore original fd: fp is open again
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
416 os.dup2(fd, fp.fileno())
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
417 os.close(fd)
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
418 setattr(self, cn, ch)
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
419 setattr(ui, fn, fp)
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
420 del self._oldios[:]
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
421
28350
8f9661d1637b chgserver: implement validate command
Jun Wu <quark@fb.com>
parents: 28342
diff changeset
422 def validate(self):
8f9661d1637b chgserver: implement validate command
Jun Wu <quark@fb.com>
parents: 28342
diff changeset
423 """Reload the config and check if the server is up to date
8f9661d1637b chgserver: implement validate command
Jun Wu <quark@fb.com>
parents: 28342
diff changeset
424
8f9661d1637b chgserver: implement validate command
Jun Wu <quark@fb.com>
parents: 28342
diff changeset
425 Read a list of '\0' separated arguments.
8f9661d1637b chgserver: implement validate command
Jun Wu <quark@fb.com>
parents: 28342
diff changeset
426 Write a non-empty list of '\0' separated instruction strings or '\0'
8f9661d1637b chgserver: implement validate command
Jun Wu <quark@fb.com>
parents: 28342
diff changeset
427 if the list is empty.
8f9661d1637b chgserver: implement validate command
Jun Wu <quark@fb.com>
parents: 28342
diff changeset
428 An instruction string could be either:
8f9661d1637b chgserver: implement validate command
Jun Wu <quark@fb.com>
parents: 28342
diff changeset
429 - "unlink $path", the client should unlink the path to stop the
8f9661d1637b chgserver: implement validate command
Jun Wu <quark@fb.com>
parents: 28342
diff changeset
430 outdated server.
28535
aa082a8125da chgserver: add an explicit "reconnect" instruction to validate
Jun Wu <quark@fb.com>
parents: 28516
diff changeset
431 - "redirect $path", the client should attempt to connect to $path
aa082a8125da chgserver: add an explicit "reconnect" instruction to validate
Jun Wu <quark@fb.com>
parents: 28516
diff changeset
432 first. If it does not work, start a new server. It implies
aa082a8125da chgserver: add an explicit "reconnect" instruction to validate
Jun Wu <quark@fb.com>
parents: 28516
diff changeset
433 "reconnect".
28516
3bf2892f685f chgserver: handle ParseError during validate
Jun Wu <quark@fb.com>
parents: 28514
diff changeset
434 - "exit $n", the client should exit directly with code n.
3bf2892f685f chgserver: handle ParseError during validate
Jun Wu <quark@fb.com>
parents: 28514
diff changeset
435 This may happen if we cannot parse the config.
28535
aa082a8125da chgserver: add an explicit "reconnect" instruction to validate
Jun Wu <quark@fb.com>
parents: 28516
diff changeset
436 - "reconnect", the client should close the connection and
aa082a8125da chgserver: add an explicit "reconnect" instruction to validate
Jun Wu <quark@fb.com>
parents: 28516
diff changeset
437 reconnect.
aa082a8125da chgserver: add an explicit "reconnect" instruction to validate
Jun Wu <quark@fb.com>
parents: 28516
diff changeset
438 If neither "reconnect" nor "redirect" is included in the instruction
aa082a8125da chgserver: add an explicit "reconnect" instruction to validate
Jun Wu <quark@fb.com>
parents: 28516
diff changeset
439 list, the client can continue with this server after completing all
aa082a8125da chgserver: add an explicit "reconnect" instruction to validate
Jun Wu <quark@fb.com>
parents: 28516
diff changeset
440 the instructions.
28350
8f9661d1637b chgserver: implement validate command
Jun Wu <quark@fb.com>
parents: 28342
diff changeset
441 """
8f9661d1637b chgserver: implement validate command
Jun Wu <quark@fb.com>
parents: 28342
diff changeset
442 args = self._readlist()
28516
3bf2892f685f chgserver: handle ParseError during validate
Jun Wu <quark@fb.com>
parents: 28514
diff changeset
443 try:
3bf2892f685f chgserver: handle ParseError during validate
Jun Wu <quark@fb.com>
parents: 28514
diff changeset
444 self.ui = _renewui(self.ui, args)
3bf2892f685f chgserver: handle ParseError during validate
Jun Wu <quark@fb.com>
parents: 28514
diff changeset
445 except error.ParseError as inst:
3bf2892f685f chgserver: handle ParseError during validate
Jun Wu <quark@fb.com>
parents: 28514
diff changeset
446 dispatch._formatparse(self.ui.warn, inst)
3bf2892f685f chgserver: handle ParseError during validate
Jun Wu <quark@fb.com>
parents: 28514
diff changeset
447 self.ui.flush()
3bf2892f685f chgserver: handle ParseError during validate
Jun Wu <quark@fb.com>
parents: 28514
diff changeset
448 self.cresult.write('exit 255')
3bf2892f685f chgserver: handle ParseError during validate
Jun Wu <quark@fb.com>
parents: 28514
diff changeset
449 return
28350
8f9661d1637b chgserver: implement validate command
Jun Wu <quark@fb.com>
parents: 28342
diff changeset
450 newhash = hashstate.fromui(self.ui, self.hashstate.mtimepaths)
8f9661d1637b chgserver: implement validate command
Jun Wu <quark@fb.com>
parents: 28342
diff changeset
451 insts = []
8f9661d1637b chgserver: implement validate command
Jun Wu <quark@fb.com>
parents: 28342
diff changeset
452 if newhash.mtimehash != self.hashstate.mtimehash:
8f9661d1637b chgserver: implement validate command
Jun Wu <quark@fb.com>
parents: 28342
diff changeset
453 addr = _hashaddress(self.baseaddress, self.hashstate.confighash)
8f9661d1637b chgserver: implement validate command
Jun Wu <quark@fb.com>
parents: 28342
diff changeset
454 insts.append('unlink %s' % addr)
28536
a979f5b03320 chgserver: invalidate the server if extensions fail to load
Jun Wu <quark@fb.com>
parents: 28535
diff changeset
455 # mtimehash is empty if one or more extensions fail to load.
a979f5b03320 chgserver: invalidate the server if extensions fail to load
Jun Wu <quark@fb.com>
parents: 28535
diff changeset
456 # to be compatible with hg, still serve the client this time.
a979f5b03320 chgserver: invalidate the server if extensions fail to load
Jun Wu <quark@fb.com>
parents: 28535
diff changeset
457 if self.hashstate.mtimehash:
a979f5b03320 chgserver: invalidate the server if extensions fail to load
Jun Wu <quark@fb.com>
parents: 28535
diff changeset
458 insts.append('reconnect')
28350
8f9661d1637b chgserver: implement validate command
Jun Wu <quark@fb.com>
parents: 28342
diff changeset
459 if newhash.confighash != self.hashstate.confighash:
8f9661d1637b chgserver: implement validate command
Jun Wu <quark@fb.com>
parents: 28342
diff changeset
460 addr = _hashaddress(self.baseaddress, newhash.confighash)
8f9661d1637b chgserver: implement validate command
Jun Wu <quark@fb.com>
parents: 28342
diff changeset
461 insts.append('redirect %s' % addr)
8f9661d1637b chgserver: implement validate command
Jun Wu <quark@fb.com>
parents: 28342
diff changeset
462 _log('validate: %s\n' % insts)
8f9661d1637b chgserver: implement validate command
Jun Wu <quark@fb.com>
parents: 28342
diff changeset
463 self.cresult.write('\0'.join(insts) or '\0')
8f9661d1637b chgserver: implement validate command
Jun Wu <quark@fb.com>
parents: 28342
diff changeset
464
27792
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
465 def chdir(self):
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
466 """Change current directory
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
467
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
468 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
469 It does not affect --config parameter.
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
470 """
28158
7cc57a531f0c chgserver: use _readlist and _readstr
Jun Wu <quark@fb.com>
parents: 28014
diff changeset
471 path = self._readstr()
7cc57a531f0c chgserver: use _readlist and _readstr
Jun Wu <quark@fb.com>
parents: 28014
diff changeset
472 if not path:
27792
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
473 return
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
474 _log('chdir to %r\n' % path)
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
475 os.chdir(path)
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
476
28159
d2d04d1d2f92 chgserver: add setumask method
Jun Wu <quark@fb.com>
parents: 28158
diff changeset
477 def setumask(self):
d2d04d1d2f92 chgserver: add setumask method
Jun Wu <quark@fb.com>
parents: 28158
diff changeset
478 """Change umask"""
d2d04d1d2f92 chgserver: add setumask method
Jun Wu <quark@fb.com>
parents: 28158
diff changeset
479 mask = struct.unpack('>I', self._read(4))[0]
d2d04d1d2f92 chgserver: add setumask method
Jun Wu <quark@fb.com>
parents: 28158
diff changeset
480 _log('setumask %r\n' % mask)
d2d04d1d2f92 chgserver: add setumask method
Jun Wu <quark@fb.com>
parents: 28158
diff changeset
481 os.umask(mask)
d2d04d1d2f92 chgserver: add setumask method
Jun Wu <quark@fb.com>
parents: 28158
diff changeset
482
27792
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
483 def getpager(self):
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
484 """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
485
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
486 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
487 does not allow to write empty data.
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
488 """
28158
7cc57a531f0c chgserver: use _readlist and _readstr
Jun Wu <quark@fb.com>
parents: 28014
diff changeset
489 args = self._readlist()
27792
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
490 try:
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
491 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
492 args)
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
493 except (error.Abort, error.AmbiguousCommand, error.CommandError,
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
494 error.UnknownCommand):
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
495 cmd = None
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
496 options = {}
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
497 if not cmd or 'pager' not in options:
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
498 self.cresult.write('\0')
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
499 return
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
500
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
501 pagercmd = _setuppagercmd(self.ui, options, cmd)
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
502 if pagercmd:
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
503 self.cresult.write(pagercmd)
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
504 else:
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
505 self.cresult.write('\0')
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
506
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
507 def setenv(self):
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
508 """Clear and update os.environ
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
509
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
510 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
511 """
28158
7cc57a531f0c chgserver: use _readlist and _readstr
Jun Wu <quark@fb.com>
parents: 28014
diff changeset
512 l = self._readlist()
27792
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
513 try:
28158
7cc57a531f0c chgserver: use _readlist and _readstr
Jun Wu <quark@fb.com>
parents: 28014
diff changeset
514 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
515 except ValueError:
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
516 raise ValueError('unexpected value in setenv request')
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
517
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
518 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
519 if os.environ.get(k) != newenv.get(k))
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
520 _log('change env: %r\n' % sorted(diffkeys))
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
521
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
522 os.environ.clear()
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
523 os.environ.update(newenv)
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
524
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
525 if set(['HGPLAIN', 'HGPLAINEXCEPT']) & diffkeys:
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
526 # reload config so that ui.plain() takes effect
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
527 self.ui = _renewui(self.ui)
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
528
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
529 _clearenvaliases(commands.table)
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
530
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
531 capabilities = commandserver.server.capabilities.copy()
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
532 capabilities.update({'attachio': attachio,
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
533 'chdir': chdir,
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
534 'getpager': getpager,
28159
d2d04d1d2f92 chgserver: add setumask method
Jun Wu <quark@fb.com>
parents: 28158
diff changeset
535 'setenv': setenv,
d2d04d1d2f92 chgserver: add setumask method
Jun Wu <quark@fb.com>
parents: 28158
diff changeset
536 'setumask': setumask})
27792
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
537
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
538 # copied from mercurial/commandserver.py
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
539 class _requesthandler(SocketServer.StreamRequestHandler):
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
540 def handle(self):
28014
83fc0c055664 chgserver: create new process group after fork (issue5051)
Jun Wu <quark@fb.com>
parents: 27793
diff changeset
541 # 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
542 # 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
543 # SIGTSTP, SIGTTIN, SIGTTOU are not ignored.
83fc0c055664 chgserver: create new process group after fork (issue5051)
Jun Wu <quark@fb.com>
parents: 27793
diff changeset
544 os.setpgid(0, 0)
27792
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
545 ui = self.server.ui
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
546 repo = self.server.repo
28511
ff5f923fca3c cmdserver: write early exception to 'e' channel in 'unix' mode
Yuya Nishihara <yuya@tcha.org>
parents: 28482
diff changeset
547 sv = None
27792
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
548 try:
28511
ff5f923fca3c cmdserver: write early exception to 'e' channel in 'unix' mode
Yuya Nishihara <yuya@tcha.org>
parents: 28482
diff changeset
549 sv = chgcmdserver(ui, repo, self.rfile, self.wfile, self.connection,
ff5f923fca3c cmdserver: write early exception to 'e' channel in 'unix' mode
Yuya Nishihara <yuya@tcha.org>
parents: 28482
diff changeset
550 self.server.hashstate, self.server.baseaddress)
27792
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
551 try:
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
552 sv.serve()
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
553 # 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
554 # known exceptions are caught by dispatch.
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
555 except error.Abort as inst:
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
556 ui.warn(_('abort: %s\n') % inst)
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
557 except IOError as inst:
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
558 if inst.errno != errno.EPIPE:
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
559 raise
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
560 except KeyboardInterrupt:
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
561 pass
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
562 finally:
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
563 sv.cleanup()
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
564 except: # re-raises
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
565 # 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
566 # see it because it is written to server's stderr by default.
28511
ff5f923fca3c cmdserver: write early exception to 'e' channel in 'unix' mode
Yuya Nishihara <yuya@tcha.org>
parents: 28482
diff changeset
567 if sv:
ff5f923fca3c cmdserver: write early exception to 'e' channel in 'unix' mode
Yuya Nishihara <yuya@tcha.org>
parents: 28482
diff changeset
568 cerr = sv.cerr
ff5f923fca3c cmdserver: write early exception to 'e' channel in 'unix' mode
Yuya Nishihara <yuya@tcha.org>
parents: 28482
diff changeset
569 else:
ff5f923fca3c cmdserver: write early exception to 'e' channel in 'unix' mode
Yuya Nishihara <yuya@tcha.org>
parents: 28482
diff changeset
570 cerr = commandserver.channeledoutput(self.wfile, 'e')
ff5f923fca3c cmdserver: write early exception to 'e' channel in 'unix' mode
Yuya Nishihara <yuya@tcha.org>
parents: 28482
diff changeset
571 traceback.print_exc(file=cerr)
27792
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
572 raise
28553
5346e9b910fc chgserver: add an explicit gc to trigger __del__
Jun Wu <quark@fb.com>
parents: 28537
diff changeset
573 finally:
5346e9b910fc chgserver: add an explicit gc to trigger __del__
Jun Wu <quark@fb.com>
parents: 28537
diff changeset
574 # trigger __del__ since ForkingMixIn uses os._exit
5346e9b910fc chgserver: add an explicit gc to trigger __del__
Jun Wu <quark@fb.com>
parents: 28537
diff changeset
575 gc.collect()
27792
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
576
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
577 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
578 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
579
28326
ea400a4f32e6 chgserver: mangle server address to include confighash
Jun Wu <quark@fb.com>
parents: 28325
diff changeset
580 def _hashaddress(address, hashstr):
ea400a4f32e6 chgserver: mangle server address to include confighash
Jun Wu <quark@fb.com>
parents: 28325
diff changeset
581 return '%s-%s' % (address, hashstr)
ea400a4f32e6 chgserver: mangle server address to include confighash
Jun Wu <quark@fb.com>
parents: 28325
diff changeset
582
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
583 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
584 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
585 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
586
0a853dc9b306 chgserver: auto exit after being idle for too long or lose the socket file
Jun Wu <quark@fb.com>
parents: 28159
diff changeset
587 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
588 # 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
589 # 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
590 # 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
591 # 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
592 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
593 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
594 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
595
0a853dc9b306 chgserver: auto exit after being idle for too long or lose the socket file
Jun Wu <quark@fb.com>
parents: 28159
diff changeset
596 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
597 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
598 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
599 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
600 _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
601 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
602 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
603 _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
604 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
605 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
606
0a853dc9b306 chgserver: auto exit after being idle for too long or lose the socket file
Jun Wu <quark@fb.com>
parents: 28159
diff changeset
607 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
608 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
609 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
610 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
611
0a853dc9b306 chgserver: auto exit after being idle for too long or lose the socket file
Jun Wu <quark@fb.com>
parents: 28159
diff changeset
612 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
613 # 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
614 # 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
615 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
616 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
617 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
618 # 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
619 # 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
620 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
621
0a853dc9b306 chgserver: auto exit after being idle for too long or lose the socket file
Jun Wu <quark@fb.com>
parents: 28159
diff changeset
622 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
623 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
624 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
625 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
626 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
627 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
628 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
629
0a853dc9b306 chgserver: auto exit after being idle for too long or lose the socket file
Jun Wu <quark@fb.com>
parents: 28159
diff changeset
630 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
631 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
632 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
633 # 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
634 # 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
635 # 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
636 # 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
637 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
638 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
639 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
640 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
641 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
642
27792
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
643 class chgunixservice(commandserver.unixservice):
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
644 def init(self):
28537
881d027d3935 chgserver: do not keep repo object
Jun Wu <quark@fb.com>
parents: 28536
diff changeset
645 self.repo = None
28326
ea400a4f32e6 chgserver: mangle server address to include confighash
Jun Wu <quark@fb.com>
parents: 28325
diff changeset
646 self._inithashstate()
28536
a979f5b03320 chgserver: invalidate the server if extensions fail to load
Jun Wu <quark@fb.com>
parents: 28535
diff changeset
647 self._checkextensions()
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
648 class cls(AutoExitMixIn, SocketServer.ForkingMixIn,
0a853dc9b306 chgserver: auto exit after being idle for too long or lose the socket file
Jun Wu <quark@fb.com>
parents: 28159
diff changeset
649 SocketServer.UnixStreamServer):
27792
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
650 ui = self.ui
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
651 repo = self.repo
28328
e00e57d83653 chgserver: pass hashstate and base server address to chgcmdserver
Jun Wu <quark@fb.com>
parents: 28327
diff changeset
652 hashstate = self.hashstate
e00e57d83653 chgserver: pass hashstate and base server address to chgcmdserver
Jun Wu <quark@fb.com>
parents: 28327
diff changeset
653 baseaddress = self.baseaddress
27792
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
654 self.server = cls(self.address, _requesthandler)
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
655 self.server.idletimeout = self.ui.configint(
0a853dc9b306 chgserver: auto exit after being idle for too long or lose the socket file
Jun Wu <quark@fb.com>
parents: 28159
diff changeset
656 'chgserver', 'idletimeout', self.server.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
657 self.server.startautoexitthread()
28326
ea400a4f32e6 chgserver: mangle server address to include confighash
Jun Wu <quark@fb.com>
parents: 28325
diff changeset
658 self._createsymlink()
27792
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
659
28326
ea400a4f32e6 chgserver: mangle server address to include confighash
Jun Wu <quark@fb.com>
parents: 28325
diff changeset
660 def _inithashstate(self):
ea400a4f32e6 chgserver: mangle server address to include confighash
Jun Wu <quark@fb.com>
parents: 28325
diff changeset
661 self.baseaddress = self.address
ea400a4f32e6 chgserver: mangle server address to include confighash
Jun Wu <quark@fb.com>
parents: 28325
diff changeset
662 if self.ui.configbool('chgserver', 'skiphash', False):
ea400a4f32e6 chgserver: mangle server address to include confighash
Jun Wu <quark@fb.com>
parents: 28325
diff changeset
663 self.hashstate = None
ea400a4f32e6 chgserver: mangle server address to include confighash
Jun Wu <quark@fb.com>
parents: 28325
diff changeset
664 return
ea400a4f32e6 chgserver: mangle server address to include confighash
Jun Wu <quark@fb.com>
parents: 28325
diff changeset
665 self.hashstate = hashstate.fromui(self.ui)
ea400a4f32e6 chgserver: mangle server address to include confighash
Jun Wu <quark@fb.com>
parents: 28325
diff changeset
666 self.address = _hashaddress(self.address, self.hashstate.confighash)
ea400a4f32e6 chgserver: mangle server address to include confighash
Jun Wu <quark@fb.com>
parents: 28325
diff changeset
667
28536
a979f5b03320 chgserver: invalidate the server if extensions fail to load
Jun Wu <quark@fb.com>
parents: 28535
diff changeset
668 def _checkextensions(self):
a979f5b03320 chgserver: invalidate the server if extensions fail to load
Jun Wu <quark@fb.com>
parents: 28535
diff changeset
669 if not self.hashstate:
a979f5b03320 chgserver: invalidate the server if extensions fail to load
Jun Wu <quark@fb.com>
parents: 28535
diff changeset
670 return
a979f5b03320 chgserver: invalidate the server if extensions fail to load
Jun Wu <quark@fb.com>
parents: 28535
diff changeset
671 if extensions.notloaded():
a979f5b03320 chgserver: invalidate the server if extensions fail to load
Jun Wu <quark@fb.com>
parents: 28535
diff changeset
672 # one or more extensions failed to load. mtimehash becomes
a979f5b03320 chgserver: invalidate the server if extensions fail to load
Jun Wu <quark@fb.com>
parents: 28535
diff changeset
673 # meaningless because we do not know the paths of those extensions.
a979f5b03320 chgserver: invalidate the server if extensions fail to load
Jun Wu <quark@fb.com>
parents: 28535
diff changeset
674 # set mtimehash to an illegal hash value to invalidate the server.
a979f5b03320 chgserver: invalidate the server if extensions fail to load
Jun Wu <quark@fb.com>
parents: 28535
diff changeset
675 self.hashstate.mtimehash = ''
a979f5b03320 chgserver: invalidate the server if extensions fail to load
Jun Wu <quark@fb.com>
parents: 28535
diff changeset
676
28326
ea400a4f32e6 chgserver: mangle server address to include confighash
Jun Wu <quark@fb.com>
parents: 28325
diff changeset
677 def _createsymlink(self):
ea400a4f32e6 chgserver: mangle server address to include confighash
Jun Wu <quark@fb.com>
parents: 28325
diff changeset
678 if self.baseaddress == self.address:
ea400a4f32e6 chgserver: mangle server address to include confighash
Jun Wu <quark@fb.com>
parents: 28325
diff changeset
679 return
ea400a4f32e6 chgserver: mangle server address to include confighash
Jun Wu <quark@fb.com>
parents: 28325
diff changeset
680 tempaddress = _tempaddress(self.baseaddress)
28342
bd05d38a1002 chgserver: use basename for socket symlink
Jun Wu <quark@fb.com>
parents: 28328
diff changeset
681 os.symlink(os.path.basename(self.address), tempaddress)
28326
ea400a4f32e6 chgserver: mangle server address to include confighash
Jun Wu <quark@fb.com>
parents: 28325
diff changeset
682 util.rename(tempaddress, self.baseaddress)
ea400a4f32e6 chgserver: mangle server address to include confighash
Jun Wu <quark@fb.com>
parents: 28325
diff changeset
683
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
684 def run(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
685 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
686 self.server.serve_forever()
0a853dc9b306 chgserver: auto exit after being idle for too long or lose the socket file
Jun Wu <quark@fb.com>
parents: 28159
diff changeset
687 finally:
0a853dc9b306 chgserver: auto exit after being idle for too long or lose the socket file
Jun Wu <quark@fb.com>
parents: 28159
diff changeset
688 self.server.unlinksocketfile()
0a853dc9b306 chgserver: auto exit after being idle for too long or lose the socket file
Jun Wu <quark@fb.com>
parents: 28159
diff changeset
689
27792
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
690 def uisetup(ui):
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
691 commandserver._servicemap['chgunix'] = chgunixservice
28261
2ab59ac06b76 chg: detect chg started by chg
Jun Wu <quark@fb.com>
parents: 28223
diff changeset
692
2ab59ac06b76 chg: detect chg started by chg
Jun Wu <quark@fb.com>
parents: 28223
diff changeset
693 # CHGINTERNALMARK is temporarily set by chg client to detect if chg will
2ab59ac06b76 chg: detect chg started by chg
Jun Wu <quark@fb.com>
parents: 28223
diff changeset
694 # start another chg. drop it to avoid possible side effects.
2ab59ac06b76 chg: detect chg started by chg
Jun Wu <quark@fb.com>
parents: 28223
diff changeset
695 if 'CHGINTERNALMARK' in os.environ:
2ab59ac06b76 chg: detect chg started by chg
Jun Wu <quark@fb.com>
parents: 28223
diff changeset
696 del os.environ['CHGINTERNALMARK']