annotate hgext/chgserver.py @ 29172:2ea9c9aa6e60

hg: limit HGUNICODEPEDANTRY to py2 reload is not available in py3, and py3 is fatal anyway
author timeless <timeless@mozdev.org>
date Tue, 05 Apr 2016 01:35:36 +0000
parents 57a24a85a2bc
children 0d83ad967bf8
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 random
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49 import re
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50 import struct
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51 import sys
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52 import threading
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53 import time
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54 import traceback
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55
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56 from mercurial.i18n import _
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57
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58 from mercurial import (
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59 cmdutil,
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60 commands,
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61 commandserver,
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62 dispatch,
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63 error,
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64 extensions,
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65 osutil,
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66 util,
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67 )
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68
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69 # Note for extension authors: ONLY specify testedwith = 'internal' for
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70 # extensions which SHIP WITH MERCURIAL. Non-mainline extensions should
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71 # be specifying the version(s) of Mercurial they are tested with, or
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72 # leave the attribute unspecified.
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73 testedwith = 'internal'
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74
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75 _log = commandserver.log
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76
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77 def _hashlist(items):
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78 """return sha1 hexdigest for a list"""
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79 return util.sha1(str(items)).hexdigest()
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80
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81 # sensitive config sections affecting confighash
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82 _configsections = [
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83 'alias', # affects global state commands.table
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84 'extdiff', # uisetup will register new commands
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85 'extensions',
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86 ]
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87
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88 # sensitive environment variables affecting confighash
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89 _envre = re.compile(r'''\A(?:
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90 CHGHG
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91 |HG.*
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92 |LANG(?:UAGE)?
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93 |LC_.*
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94 |LD_.*
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95 |PATH
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96 |PYTHON.*
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97 |TERM(?:INFO)?
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98 |TZ
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99 )\Z''', re.X)
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100
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101 def _confighash(ui):
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102 """return a quick hash for detecting config/env changes
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103
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104 confighash is the hash of sensitive config items and environment variables.
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105
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106 for chgserver, it is designed that once confighash changes, the server is
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107 not qualified to serve its client and should redirect the client to a new
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108 server. different from mtimehash, confighash change will not mark the
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109 server outdated and exit since the user can have different configs at the
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110 same time.
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111 """
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112 sectionitems = []
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113 for section in _configsections:
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114 sectionitems.append(ui.configitems(section))
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115 sectionhash = _hashlist(sectionitems)
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116 envitems = [(k, v) for k, v in os.environ.iteritems() if _envre.match(k)]
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117 envhash = _hashlist(sorted(envitems))
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118 return sectionhash[:6] + envhash[:6]
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119
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120 def _getmtimepaths(ui):
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121 """get a list of paths that should be checked to detect change
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122
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123 The list will include:
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124 - extensions (will not cover all files for complex extensions)
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125 - mercurial/__version__.py
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126 - python binary
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127 """
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128 modules = [m for n, m in extensions.extensions(ui)]
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129 try:
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130 from mercurial import __version__
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131 modules.append(__version__)
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132 except ImportError:
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133 pass
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134 files = [sys.executable]
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135 for m in modules:
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136 try:
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137 files.append(inspect.getabsfile(m))
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138 except TypeError:
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139 pass
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140 return sorted(set(files))
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141
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142 def _mtimehash(paths):
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143 """return a quick hash for detecting file changes
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144
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145 mtimehash calls stat on given paths and calculate a hash based on size and
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146 mtime of each file. mtimehash does not read file content because reading is
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147 expensive. therefore it's not 100% reliable for detecting content changes.
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148 it's possible to return different hashes for same file contents.
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149 it's also possible to return a same hash for different file contents for
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150 some carefully crafted situation.
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151
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152 for chgserver, it is designed that once mtimehash changes, the server is
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153 considered outdated immediately and should no longer provide service.
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154 """
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diff changeset
155 def trystat(path):
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diff changeset
156 try:
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diff changeset
157 st = os.stat(path)
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diff changeset
158 return (st.st_mtime, st.st_size)
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diff changeset
159 except OSError:
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diff changeset
160 # could be ENOENT, EPERM etc. not fatal in any case
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diff changeset
161 pass
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162 return _hashlist(map(trystat, paths))[:12]
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diff changeset
163
28277
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diff changeset
164 class hashstate(object):
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165 """a structure storing confighash, mtimehash, paths used for mtimehash"""
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166 def __init__(self, confighash, mtimehash, mtimepaths):
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167 self.confighash = confighash
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168 self.mtimehash = mtimehash
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169 self.mtimepaths = mtimepaths
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170
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diff changeset
171 @staticmethod
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172 def fromui(ui, mtimepaths=None):
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173 if mtimepaths is None:
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diff changeset
174 mtimepaths = _getmtimepaths(ui)
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175 confighash = _confighash(ui)
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176 mtimehash = _mtimehash(mtimepaths)
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177 _log('confighash = %s mtimehash = %s\n' % (confighash, mtimehash))
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178 return hashstate(confighash, mtimehash, mtimepaths)
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179
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180 # copied from hgext/pager.py:uisetup()
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181 def _setuppagercmd(ui, options, cmd):
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182 if not ui.formatted():
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183 return
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184
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185 p = ui.config("pager", "pager", os.environ.get("PAGER"))
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186 usepager = False
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187 always = util.parsebool(options['pager'])
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188 auto = options['pager'] == 'auto'
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189
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190 if not p:
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191 pass
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192 elif always:
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193 usepager = True
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194 elif not auto:
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195 usepager = False
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196 else:
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197 attended = ['annotate', 'cat', 'diff', 'export', 'glog', 'log', 'qdiff']
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198 attend = ui.configlist('pager', 'attend', attended)
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199 ignore = ui.configlist('pager', 'ignore')
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200 cmds, _ = cmdutil.findcmd(cmd, commands.table)
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201
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202 for cmd in cmds:
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203 var = 'attend-%s' % cmd
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204 if ui.config('pager', var):
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205 usepager = ui.configbool('pager', var)
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diff changeset
206 break
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parents:
diff changeset
207 if (cmd in attend or
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diff changeset
208 (cmd not in ignore and not attend)):
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diff changeset
209 usepager = True
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parents:
diff changeset
210 break
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parents:
diff changeset
211
980957333cfa chgserver: import background server extension from cHg
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parents:
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212 if usepager:
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diff changeset
213 ui.setconfig('ui', 'formatted', ui.formatted(), 'pager')
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214 ui.setconfig('ui', 'interactive', False, 'pager')
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215 return p
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parents:
diff changeset
216
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parents:
diff changeset
217 def _newchgui(srcui, csystem):
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218 class chgui(srcui.__class__):
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219 def __init__(self, src=None):
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220 super(chgui, self).__init__(src)
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221 if src:
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222 self._csystem = getattr(src, '_csystem', csystem)
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223 else:
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224 self._csystem = csystem
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diff changeset
225
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diff changeset
226 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
227 errprefix=None):
28586
82cee85d5274 chgserver: use old ui.system if fout is not stdout or needs to be captured
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diff changeset
228 # fallback to the original system method if the output needs to be
82cee85d5274 chgserver: use old ui.system if fout is not stdout or needs to be captured
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diff changeset
229 # captured (to self._buffers), or the output stream is not stdout
82cee85d5274 chgserver: use old ui.system if fout is not stdout or needs to be captured
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diff changeset
230 # (e.g. stderr, cStringIO), because the chg client is not aware of
82cee85d5274 chgserver: use old ui.system if fout is not stdout or needs to be captured
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parents: 28553
diff changeset
231 # these situations and will behave differently (write to stdout).
82cee85d5274 chgserver: use old ui.system if fout is not stdout or needs to be captured
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parents: 28553
diff changeset
232 if (any(s[1] for s in self._bufferstates)
82cee85d5274 chgserver: use old ui.system if fout is not stdout or needs to be captured
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parents: 28553
diff changeset
233 or not util.safehasattr(self.fout, 'fileno')
82cee85d5274 chgserver: use old ui.system if fout is not stdout or needs to be captured
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parents: 28553
diff changeset
234 or self.fout.fileno() != sys.stdout.fileno()):
82cee85d5274 chgserver: use old ui.system if fout is not stdout or needs to be captured
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parents: 28553
diff changeset
235 return super(chgui, self).system(cmd, environ, cwd, onerr,
82cee85d5274 chgserver: use old ui.system if fout is not stdout or needs to be captured
Jun Wu <quark@fb.com>
parents: 28553
diff changeset
236 errprefix)
27792
980957333cfa chgserver: import background server extension from cHg
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parents:
diff changeset
237 # copied from mercurial/util.py:system()
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diff changeset
238 self.flush()
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diff changeset
239 def py2shell(val):
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parents:
diff changeset
240 if val is None or val is False:
980957333cfa chgserver: import background server extension from cHg
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diff changeset
241 return '0'
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diff changeset
242 if val is True:
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diff changeset
243 return '1'
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parents:
diff changeset
244 return str(val)
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diff changeset
245 env = os.environ.copy()
980957333cfa chgserver: import background server extension from cHg
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diff changeset
246 if environ:
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diff changeset
247 env.update((k, py2shell(v)) for k, v in environ.iteritems())
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diff changeset
248 env['HG'] = util.hgexecutable()
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diff changeset
249 rc = self._csystem(cmd, env, cwd)
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diff changeset
250 if rc and onerr:
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diff changeset
251 errmsg = '%s %s' % (os.path.basename(cmd.split(None, 1)[0]),
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diff changeset
252 util.explainexit(rc)[0])
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parents:
diff changeset
253 if errprefix:
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parents:
diff changeset
254 errmsg = '%s: %s' % (errprefix, errmsg)
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diff changeset
255 raise onerr(errmsg)
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diff changeset
256 return rc
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diff changeset
257
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diff changeset
258 return chgui(srcui)
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parents:
diff changeset
259
28602
83127a9fe76e chgserver: drop old hack to recreate ui on HGPLAIN change
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diff changeset
260 def _loadnewui(srcui, args):
27792
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diff changeset
261 newui = srcui.__class__()
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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>
parents: 28262
diff changeset
266
3682e201cce6 chgserver: make _renewui load repo and command line configs
Jun Wu <quark@fb.com>
parents: 28262
diff changeset
267 # internal config: extensions.chgserver
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Jun Wu <quark@fb.com>
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diff changeset
268 newui.setconfig('extensions', 'chgserver',
3682e201cce6 chgserver: make _renewui load repo and command line configs
Jun Wu <quark@fb.com>
parents: 28262
diff changeset
269 srcui.config('extensions', 'chgserver'), '--config')
3682e201cce6 chgserver: make _renewui load repo and command line configs
Jun Wu <quark@fb.com>
parents: 28262
diff changeset
270
3682e201cce6 chgserver: make _renewui load repo and command line configs
Jun Wu <quark@fb.com>
parents: 28262
diff changeset
271 # command line args
28767
73bfd9a54a5c chgserver: move args copying logic to the correct place
Jun Wu <quark@fb.com>
parents: 28603
diff changeset
272 args = args[:]
28264
3682e201cce6 chgserver: make _renewui load repo and command line configs
Jun Wu <quark@fb.com>
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diff changeset
273 dispatch._parseconfig(newui, dispatch._earlygetopt(['--config'], args))
3682e201cce6 chgserver: make _renewui load repo and command line configs
Jun Wu <quark@fb.com>
parents: 28262
diff changeset
274
27792
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diff changeset
275 # stolen from tortoisehg.util.copydynamicconfig()
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parents:
diff changeset
276 for section, name, value in srcui.walkconfig():
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parents:
diff changeset
277 source = srcui.configsource(section, name)
28264
3682e201cce6 chgserver: make _renewui load repo and command line configs
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diff changeset
278 if ':' in source or source == '--config':
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Jun Wu <quark@fb.com>
parents: 28262
diff changeset
279 # path:line or command line
27792
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parents:
diff changeset
280 continue
980957333cfa chgserver: import background server extension from cHg
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parents:
diff changeset
281 if source == 'none':
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parents:
diff changeset
282 # ui.configsource returns 'none' by default
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parents:
diff changeset
283 source = ''
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parents:
diff changeset
284 newui.setconfig(section, name, value, source)
28599
0e7a929754aa chgserver: use global ui instead of repo ui for dispatch.request.ui
Jun Wu <quark@fb.com>
parents: 28586
diff changeset
285
0e7a929754aa chgserver: use global ui instead of repo ui for dispatch.request.ui
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diff changeset
286 # load wd and repo config, copied from dispatch.py
0e7a929754aa chgserver: use global ui instead of repo ui for dispatch.request.ui
Jun Wu <quark@fb.com>
parents: 28586
diff changeset
287 cwds = dispatch._earlygetopt(['--cwd'], args)
0e7a929754aa chgserver: use global ui instead of repo ui for dispatch.request.ui
Jun Wu <quark@fb.com>
parents: 28586
diff changeset
288 cwd = cwds and os.path.realpath(cwds[-1]) or None
0e7a929754aa chgserver: use global ui instead of repo ui for dispatch.request.ui
Jun Wu <quark@fb.com>
parents: 28586
diff changeset
289 rpath = dispatch._earlygetopt(["-R", "--repository", "--repo"], args)
0e7a929754aa chgserver: use global ui instead of repo ui for dispatch.request.ui
Jun Wu <quark@fb.com>
parents: 28586
diff changeset
290 path, newlui = dispatch._getlocal(newui, rpath, wd=cwd)
0e7a929754aa chgserver: use global ui instead of repo ui for dispatch.request.ui
Jun Wu <quark@fb.com>
parents: 28586
diff changeset
291
0e7a929754aa chgserver: use global ui instead of repo ui for dispatch.request.ui
Jun Wu <quark@fb.com>
parents: 28586
diff changeset
292 return (newui, newlui)
27792
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293
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294 class channeledsystem(object):
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295 """Propagate ui.system() request in the following format:
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296
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297 payload length (unsigned int),
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298 cmd, '\0',
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299 cwd, '\0',
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300 envkey, '=', val, '\0',
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301 ...
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302 envkey, '=', val
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303
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304 and waits:
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305
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306 exitcode length (unsigned int),
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307 exitcode (int)
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308 """
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309 def __init__(self, in_, out, channel):
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310 self.in_ = in_
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311 self.out = out
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312 self.channel = channel
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313
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314 def __call__(self, cmd, environ, cwd):
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315 args = [util.quotecommand(cmd), os.path.abspath(cwd or '.')]
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316 args.extend('%s=%s' % (k, v) for k, v in environ.iteritems())
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317 data = '\0'.join(args)
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318 self.out.write(struct.pack('>cI', self.channel, len(data)))
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319 self.out.write(data)
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320 self.out.flush()
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321
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322 length = self.in_.read(4)
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323 length, = struct.unpack('>I', length)
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324 if length != 4:
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325 raise error.Abort(_('invalid response'))
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326 rc, = struct.unpack('>i', self.in_.read(4))
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327 return rc
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328
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329 _iochannels = [
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330 # server.ch, ui.fp, mode
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331 ('cin', 'fin', 'rb'),
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332 ('cout', 'fout', 'wb'),
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333 ('cerr', 'ferr', 'wb'),
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334 ]
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335
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336 class chgcmdserver(commandserver.server):
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337 def __init__(self, ui, repo, fin, fout, sock, hashstate, baseaddress):
27792
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338 super(chgcmdserver, self).__init__(
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339 _newchgui(ui, channeledsystem(fin, fout, 'S')), repo, fin, fout)
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340 self.clientsock = sock
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341 self._oldios = [] # original (self.ch, ui.fp, fd) before "attachio"
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342 self.hashstate = hashstate
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343 self.baseaddress = baseaddress
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344 if hashstate is not None:
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345 self.capabilities = self.capabilities.copy()
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346 self.capabilities['validate'] = chgcmdserver.validate
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347
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348 def cleanup(self):
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349 # dispatch._runcatch() does not flush outputs if exception is not
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350 # handled by dispatch._dispatch()
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351 self.ui.flush()
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352 self._restoreio()
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353
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354 def attachio(self):
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355 """Attach to client's stdio passed via unix domain socket; all
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parents:
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356 channels except cresult will no longer be used
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357 """
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parents:
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358 # tell client to sendmsg() with 1-byte payload, which makes it
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359 # distinctive from "attachio\n" command consumed by client.read()
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diff changeset
360 self.clientsock.sendall(struct.pack('>cI', 'I', 1))
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parents:
diff changeset
361 clientfds = osutil.recvfds(self.clientsock.fileno())
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parents:
diff changeset
362 _log('received fds: %r\n' % clientfds)
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363
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diff changeset
364 ui = self.ui
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diff changeset
365 ui.flush()
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diff changeset
366 first = self._saveio()
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diff changeset
367 for fd, (cn, fn, mode) in zip(clientfds, _iochannels):
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diff changeset
368 assert fd > 0
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diff changeset
369 fp = getattr(ui, fn)
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diff changeset
370 os.dup2(fd, fp.fileno())
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diff changeset
371 os.close(fd)
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diff changeset
372 if not first:
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diff changeset
373 continue
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diff changeset
374 # reset buffering mode when client is first attached. as we want
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diff changeset
375 # to see output immediately on pager, the mode stays unchanged
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parents:
diff changeset
376 # when client re-attached. ferr is unchanged because it should
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diff changeset
377 # be unbuffered no matter if it is a tty or not.
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diff changeset
378 if fn == 'ferr':
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diff changeset
379 newfp = fp
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diff changeset
380 else:
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parents:
diff changeset
381 # make it line buffered explicitly because the default is
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diff changeset
382 # decided on first write(), where fout could be a pager.
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diff changeset
383 if fp.isatty():
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diff changeset
384 bufsize = 1 # line buffered
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parents:
diff changeset
385 else:
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diff changeset
386 bufsize = -1 # system default
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diff changeset
387 newfp = os.fdopen(fp.fileno(), mode, bufsize)
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diff changeset
388 setattr(ui, fn, newfp)
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diff changeset
389 setattr(self, cn, newfp)
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diff changeset
390
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diff changeset
391 self.cresult.write(struct.pack('>i', len(clientfds)))
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parents:
diff changeset
392
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diff changeset
393 def _saveio(self):
980957333cfa chgserver: import background server extension from cHg
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diff changeset
394 if self._oldios:
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diff changeset
395 return False
980957333cfa chgserver: import background server extension from cHg
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diff changeset
396 ui = self.ui
980957333cfa chgserver: import background server extension from cHg
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parents:
diff changeset
397 for cn, fn, _mode in _iochannels:
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parents:
diff changeset
398 ch = getattr(self, cn)
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diff changeset
399 fp = getattr(ui, fn)
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diff changeset
400 fd = os.dup(fp.fileno())
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parents:
diff changeset
401 self._oldios.append((ch, fp, fd))
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parents:
diff changeset
402 return True
980957333cfa chgserver: import background server extension from cHg
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parents:
diff changeset
403
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
404 def _restoreio(self):
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Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
405 ui = self.ui
980957333cfa chgserver: import background server extension from cHg
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parents:
diff changeset
406 for (ch, fp, fd), (cn, fn, _mode) in zip(self._oldios, _iochannels):
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Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
407 newfp = getattr(ui, fn)
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
408 # close newfp while it's associated with client; otherwise it
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Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
409 # would be closed when newfp is deleted
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Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
410 if newfp is not fp:
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
411 newfp.close()
980957333cfa chgserver: import background server extension from cHg
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parents:
diff changeset
412 # restore original fd: fp is open again
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parents:
diff changeset
413 os.dup2(fd, fp.fileno())
980957333cfa chgserver: import background server extension from cHg
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parents:
diff changeset
414 os.close(fd)
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parents:
diff changeset
415 setattr(self, cn, ch)
980957333cfa chgserver: import background server extension from cHg
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parents:
diff changeset
416 setattr(ui, fn, fp)
980957333cfa chgserver: import background server extension from cHg
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parents:
diff changeset
417 del self._oldios[:]
980957333cfa chgserver: import background server extension from cHg
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parents:
diff changeset
418
28350
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diff changeset
419 def validate(self):
8f9661d1637b chgserver: implement validate command
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parents: 28342
diff changeset
420 """Reload the config and check if the server is up to date
8f9661d1637b chgserver: implement validate command
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parents: 28342
diff changeset
421
8f9661d1637b chgserver: implement validate command
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parents: 28342
diff changeset
422 Read a list of '\0' separated arguments.
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parents: 28342
diff changeset
423 Write a non-empty list of '\0' separated instruction strings or '\0'
8f9661d1637b chgserver: implement validate command
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parents: 28342
diff changeset
424 if the list is empty.
8f9661d1637b chgserver: implement validate command
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parents: 28342
diff changeset
425 An instruction string could be either:
8f9661d1637b chgserver: implement validate command
Jun Wu <quark@fb.com>
parents: 28342
diff changeset
426 - "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
427 outdated server.
28535
aa082a8125da chgserver: add an explicit "reconnect" instruction to validate
Jun Wu <quark@fb.com>
parents: 28516
diff changeset
428 - "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
429 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
430 "reconnect".
28516
3bf2892f685f chgserver: handle ParseError during validate
Jun Wu <quark@fb.com>
parents: 28514
diff changeset
431 - "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
432 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
433 - "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
434 reconnect.
aa082a8125da chgserver: add an explicit "reconnect" instruction to validate
Jun Wu <quark@fb.com>
parents: 28516
diff changeset
435 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
436 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
437 the instructions.
28350
8f9661d1637b chgserver: implement validate command
Jun Wu <quark@fb.com>
parents: 28342
diff changeset
438 """
8f9661d1637b chgserver: implement validate command
Jun Wu <quark@fb.com>
parents: 28342
diff changeset
439 args = self._readlist()
28516
3bf2892f685f chgserver: handle ParseError during validate
Jun Wu <quark@fb.com>
parents: 28514
diff changeset
440 try:
28599
0e7a929754aa chgserver: use global ui instead of repo ui for dispatch.request.ui
Jun Wu <quark@fb.com>
parents: 28586
diff changeset
441 self.ui, lui = _loadnewui(self.ui, args)
28516
3bf2892f685f chgserver: handle ParseError during validate
Jun Wu <quark@fb.com>
parents: 28514
diff changeset
442 except error.ParseError as inst:
3bf2892f685f chgserver: handle ParseError during validate
Jun Wu <quark@fb.com>
parents: 28514
diff changeset
443 dispatch._formatparse(self.ui.warn, inst)
3bf2892f685f chgserver: handle ParseError during validate
Jun Wu <quark@fb.com>
parents: 28514
diff changeset
444 self.ui.flush()
3bf2892f685f chgserver: handle ParseError during validate
Jun Wu <quark@fb.com>
parents: 28514
diff changeset
445 self.cresult.write('exit 255')
3bf2892f685f chgserver: handle ParseError during validate
Jun Wu <quark@fb.com>
parents: 28514
diff changeset
446 return
28599
0e7a929754aa chgserver: use global ui instead of repo ui for dispatch.request.ui
Jun Wu <quark@fb.com>
parents: 28586
diff changeset
447 newhash = hashstate.fromui(lui, self.hashstate.mtimepaths)
28350
8f9661d1637b chgserver: implement validate command
Jun Wu <quark@fb.com>
parents: 28342
diff changeset
448 insts = []
8f9661d1637b chgserver: implement validate command
Jun Wu <quark@fb.com>
parents: 28342
diff changeset
449 if newhash.mtimehash != self.hashstate.mtimehash:
8f9661d1637b chgserver: implement validate command
Jun Wu <quark@fb.com>
parents: 28342
diff changeset
450 addr = _hashaddress(self.baseaddress, self.hashstate.confighash)
8f9661d1637b chgserver: implement validate command
Jun Wu <quark@fb.com>
parents: 28342
diff changeset
451 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
452 # 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
453 # 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
454 if self.hashstate.mtimehash:
a979f5b03320 chgserver: invalidate the server if extensions fail to load
Jun Wu <quark@fb.com>
parents: 28535
diff changeset
455 insts.append('reconnect')
28350
8f9661d1637b chgserver: implement validate command
Jun Wu <quark@fb.com>
parents: 28342
diff changeset
456 if newhash.confighash != self.hashstate.confighash:
8f9661d1637b chgserver: implement validate command
Jun Wu <quark@fb.com>
parents: 28342
diff changeset
457 addr = _hashaddress(self.baseaddress, newhash.confighash)
8f9661d1637b chgserver: implement validate command
Jun Wu <quark@fb.com>
parents: 28342
diff changeset
458 insts.append('redirect %s' % addr)
8f9661d1637b chgserver: implement validate command
Jun Wu <quark@fb.com>
parents: 28342
diff changeset
459 _log('validate: %s\n' % insts)
8f9661d1637b chgserver: implement validate command
Jun Wu <quark@fb.com>
parents: 28342
diff changeset
460 self.cresult.write('\0'.join(insts) or '\0')
8f9661d1637b chgserver: implement validate command
Jun Wu <quark@fb.com>
parents: 28342
diff changeset
461
27792
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
462 def chdir(self):
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
463 """Change current directory
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
464
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
465 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
466 It does not affect --config parameter.
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
467 """
28158
7cc57a531f0c chgserver: use _readlist and _readstr
Jun Wu <quark@fb.com>
parents: 28014
diff changeset
468 path = self._readstr()
7cc57a531f0c chgserver: use _readlist and _readstr
Jun Wu <quark@fb.com>
parents: 28014
diff changeset
469 if not path:
27792
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
470 return
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
471 _log('chdir to %r\n' % path)
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
472 os.chdir(path)
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
473
28159
d2d04d1d2f92 chgserver: add setumask method
Jun Wu <quark@fb.com>
parents: 28158
diff changeset
474 def setumask(self):
d2d04d1d2f92 chgserver: add setumask method
Jun Wu <quark@fb.com>
parents: 28158
diff changeset
475 """Change umask"""
d2d04d1d2f92 chgserver: add setumask method
Jun Wu <quark@fb.com>
parents: 28158
diff changeset
476 mask = struct.unpack('>I', self._read(4))[0]
d2d04d1d2f92 chgserver: add setumask method
Jun Wu <quark@fb.com>
parents: 28158
diff changeset
477 _log('setumask %r\n' % mask)
d2d04d1d2f92 chgserver: add setumask method
Jun Wu <quark@fb.com>
parents: 28158
diff changeset
478 os.umask(mask)
d2d04d1d2f92 chgserver: add setumask method
Jun Wu <quark@fb.com>
parents: 28158
diff changeset
479
27792
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
480 def getpager(self):
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
481 """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
482
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
483 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
484 does not allow to write empty data.
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
485 """
28158
7cc57a531f0c chgserver: use _readlist and _readstr
Jun Wu <quark@fb.com>
parents: 28014
diff changeset
486 args = self._readlist()
27792
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
487 try:
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
488 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
489 args)
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
490 except (error.Abort, error.AmbiguousCommand, error.CommandError,
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
491 error.UnknownCommand):
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
492 cmd = None
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
493 options = {}
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
494 if not cmd or 'pager' not in options:
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
495 self.cresult.write('\0')
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
496 return
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
497
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
498 pagercmd = _setuppagercmd(self.ui, options, cmd)
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
499 if pagercmd:
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
500 self.cresult.write(pagercmd)
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
501 else:
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
502 self.cresult.write('\0')
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
503
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
504 def setenv(self):
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
505 """Clear and update os.environ
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 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
508 """
28158
7cc57a531f0c chgserver: use _readlist and _readstr
Jun Wu <quark@fb.com>
parents: 28014
diff changeset
509 l = self._readlist()
27792
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
510 try:
28158
7cc57a531f0c chgserver: use _readlist and _readstr
Jun Wu <quark@fb.com>
parents: 28014
diff changeset
511 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
512 except ValueError:
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
513 raise ValueError('unexpected value in setenv request')
28602
83127a9fe76e chgserver: drop old hack to recreate ui on HGPLAIN change
Yuya Nishihara <yuya@tcha.org>
parents: 28599
diff changeset
514 _log('setenv: %r\n' % sorted(newenv.keys()))
27792
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
515 os.environ.clear()
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
516 os.environ.update(newenv)
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 capabilities = commandserver.server.capabilities.copy()
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
519 capabilities.update({'attachio': attachio,
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
520 'chdir': chdir,
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
521 'getpager': getpager,
28159
d2d04d1d2f92 chgserver: add setumask method
Jun Wu <quark@fb.com>
parents: 28158
diff changeset
522 'setenv': setenv,
d2d04d1d2f92 chgserver: add setumask method
Jun Wu <quark@fb.com>
parents: 28158
diff changeset
523 'setumask': setumask})
27792
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 # copied from mercurial/commandserver.py
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
526 class _requesthandler(SocketServer.StreamRequestHandler):
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
527 def handle(self):
28014
83fc0c055664 chgserver: create new process group after fork (issue5051)
Jun Wu <quark@fb.com>
parents: 27793
diff changeset
528 # 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
529 # 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
530 # SIGTSTP, SIGTTIN, SIGTTOU are not ignored.
83fc0c055664 chgserver: create new process group after fork (issue5051)
Jun Wu <quark@fb.com>
parents: 27793
diff changeset
531 os.setpgid(0, 0)
28770
97c8da2f89f9 chgserver: change random state after fork
Jun Wu <quark@fb.com>
parents: 28768
diff changeset
532 # change random state otherwise forked request handlers would have a
97c8da2f89f9 chgserver: change random state after fork
Jun Wu <quark@fb.com>
parents: 28768
diff changeset
533 # same state inherited from parent.
97c8da2f89f9 chgserver: change random state after fork
Jun Wu <quark@fb.com>
parents: 28768
diff changeset
534 random.seed()
27792
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
535 ui = self.server.ui
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
536 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
537 sv = None
27792
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
538 try:
28511
ff5f923fca3c cmdserver: write early exception to 'e' channel in 'unix' mode
Yuya Nishihara <yuya@tcha.org>
parents: 28482
diff changeset
539 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
540 self.server.hashstate, self.server.baseaddress)
27792
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
541 try:
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
542 sv.serve()
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
543 # 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
544 # known exceptions are caught by dispatch.
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
545 except error.Abort as inst:
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
546 ui.warn(_('abort: %s\n') % inst)
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
547 except IOError as inst:
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
548 if inst.errno != errno.EPIPE:
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
549 raise
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
550 except KeyboardInterrupt:
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
551 pass
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
552 finally:
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
553 sv.cleanup()
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
554 except: # re-raises
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
555 # 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
556 # 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
557 if sv:
ff5f923fca3c cmdserver: write early exception to 'e' channel in 'unix' mode
Yuya Nishihara <yuya@tcha.org>
parents: 28482
diff changeset
558 cerr = sv.cerr
ff5f923fca3c cmdserver: write early exception to 'e' channel in 'unix' mode
Yuya Nishihara <yuya@tcha.org>
parents: 28482
diff changeset
559 else:
ff5f923fca3c cmdserver: write early exception to 'e' channel in 'unix' mode
Yuya Nishihara <yuya@tcha.org>
parents: 28482
diff changeset
560 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
561 traceback.print_exc(file=cerr)
27792
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
562 raise
28553
5346e9b910fc chgserver: add an explicit gc to trigger __del__
Jun Wu <quark@fb.com>
parents: 28537
diff changeset
563 finally:
5346e9b910fc chgserver: add an explicit gc to trigger __del__
Jun Wu <quark@fb.com>
parents: 28537
diff changeset
564 # 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
565 gc.collect()
27792
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
566
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
567 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
568 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
569
28326
ea400a4f32e6 chgserver: mangle server address to include confighash
Jun Wu <quark@fb.com>
parents: 28325
diff changeset
570 def _hashaddress(address, hashstr):
ea400a4f32e6 chgserver: mangle server address to include confighash
Jun Wu <quark@fb.com>
parents: 28325
diff changeset
571 return '%s-%s' % (address, hashstr)
ea400a4f32e6 chgserver: mangle server address to include confighash
Jun Wu <quark@fb.com>
parents: 28325
diff changeset
572
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
573 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
574 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
575 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
576
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 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
578 # 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
579 # 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
580 # 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
581 # 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
582 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
583 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
584 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
585
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 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
587 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
588 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
589 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
590 _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
591 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
592 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
593 _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
594 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
595 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
596
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 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
598 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
599 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
600 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
601
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 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
603 # 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
604 # 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
605 tempaddress = _tempaddress(self.server_address)
28768
2461f33c9f97 chgserver: use relative path at socket.bind
Jun Wu <quark@fb.com>
parents: 28767
diff changeset
606 # use relative path instead of full path at bind() if possible, since
2461f33c9f97 chgserver: use relative path at socket.bind
Jun Wu <quark@fb.com>
parents: 28767
diff changeset
607 # AF_UNIX path has very small length limit (107 chars) on common
2461f33c9f97 chgserver: use relative path at socket.bind
Jun Wu <quark@fb.com>
parents: 28767
diff changeset
608 # platforms (see sys/un.h)
2461f33c9f97 chgserver: use relative path at socket.bind
Jun Wu <quark@fb.com>
parents: 28767
diff changeset
609 dirname, basename = os.path.split(tempaddress)
2461f33c9f97 chgserver: use relative path at socket.bind
Jun Wu <quark@fb.com>
parents: 28767
diff changeset
610 bakwdfd = None
2461f33c9f97 chgserver: use relative path at socket.bind
Jun Wu <quark@fb.com>
parents: 28767
diff changeset
611 if dirname:
2461f33c9f97 chgserver: use relative path at socket.bind
Jun Wu <quark@fb.com>
parents: 28767
diff changeset
612 bakwdfd = os.open('.', os.O_DIRECTORY)
2461f33c9f97 chgserver: use relative path at socket.bind
Jun Wu <quark@fb.com>
parents: 28767
diff changeset
613 os.chdir(dirname)
2461f33c9f97 chgserver: use relative path at socket.bind
Jun Wu <quark@fb.com>
parents: 28767
diff changeset
614 self.socket.bind(basename)
2461f33c9f97 chgserver: use relative path at socket.bind
Jun Wu <quark@fb.com>
parents: 28767
diff changeset
615 self._socketstat = os.stat(basename)
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
616 # 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
617 # old server will detect ownership change and exit.
28768
2461f33c9f97 chgserver: use relative path at socket.bind
Jun Wu <quark@fb.com>
parents: 28767
diff changeset
618 util.rename(basename, self.server_address)
2461f33c9f97 chgserver: use relative path at socket.bind
Jun Wu <quark@fb.com>
parents: 28767
diff changeset
619 if bakwdfd:
2461f33c9f97 chgserver: use relative path at socket.bind
Jun Wu <quark@fb.com>
parents: 28767
diff changeset
620 os.fchdir(bakwdfd)
2461f33c9f97 chgserver: use relative path at socket.bind
Jun Wu <quark@fb.com>
parents: 28767
diff changeset
621 os.close(bakwdfd)
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
622
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 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
624 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
625 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
626 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
627 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
628 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
629 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
630
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 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
632 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
633 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
634 # 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
635 # 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
636 # 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
637 # 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
638 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
639 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
640 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
641 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
642 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
643
27792
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
644 class chgunixservice(commandserver.unixservice):
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
645 def init(self):
28603
f467073cd798 chgserver: drop bundle.mainreporoot config
Jun Wu <quark@fb.com>
parents: 28602
diff changeset
646 if self.repo:
f467073cd798 chgserver: drop bundle.mainreporoot config
Jun Wu <quark@fb.com>
parents: 28602
diff changeset
647 # one chgserver can serve multiple repos. drop repo infomation
f467073cd798 chgserver: drop bundle.mainreporoot config
Jun Wu <quark@fb.com>
parents: 28602
diff changeset
648 self.ui.setconfig('bundle', 'mainreporoot', '', 'repo')
f467073cd798 chgserver: drop bundle.mainreporoot config
Jun Wu <quark@fb.com>
parents: 28602
diff changeset
649 self.repo = None
28326
ea400a4f32e6 chgserver: mangle server address to include confighash
Jun Wu <quark@fb.com>
parents: 28325
diff changeset
650 self._inithashstate()
28536
a979f5b03320 chgserver: invalidate the server if extensions fail to load
Jun Wu <quark@fb.com>
parents: 28535
diff changeset
651 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
652 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
653 SocketServer.UnixStreamServer):
27792
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
654 ui = self.ui
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
655 repo = self.repo
28328
e00e57d83653 chgserver: pass hashstate and base server address to chgcmdserver
Jun Wu <quark@fb.com>
parents: 28327
diff changeset
656 hashstate = self.hashstate
e00e57d83653 chgserver: pass hashstate and base server address to chgcmdserver
Jun Wu <quark@fb.com>
parents: 28327
diff changeset
657 baseaddress = self.baseaddress
27792
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
658 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
659 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
660 '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
661 self.server.startautoexitthread()
28326
ea400a4f32e6 chgserver: mangle server address to include confighash
Jun Wu <quark@fb.com>
parents: 28325
diff changeset
662 self._createsymlink()
27792
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
663
28326
ea400a4f32e6 chgserver: mangle server address to include confighash
Jun Wu <quark@fb.com>
parents: 28325
diff changeset
664 def _inithashstate(self):
ea400a4f32e6 chgserver: mangle server address to include confighash
Jun Wu <quark@fb.com>
parents: 28325
diff changeset
665 self.baseaddress = self.address
ea400a4f32e6 chgserver: mangle server address to include confighash
Jun Wu <quark@fb.com>
parents: 28325
diff changeset
666 if self.ui.configbool('chgserver', 'skiphash', False):
ea400a4f32e6 chgserver: mangle server address to include confighash
Jun Wu <quark@fb.com>
parents: 28325
diff changeset
667 self.hashstate = None
ea400a4f32e6 chgserver: mangle server address to include confighash
Jun Wu <quark@fb.com>
parents: 28325
diff changeset
668 return
ea400a4f32e6 chgserver: mangle server address to include confighash
Jun Wu <quark@fb.com>
parents: 28325
diff changeset
669 self.hashstate = hashstate.fromui(self.ui)
ea400a4f32e6 chgserver: mangle server address to include confighash
Jun Wu <quark@fb.com>
parents: 28325
diff changeset
670 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
671
28536
a979f5b03320 chgserver: invalidate the server if extensions fail to load
Jun Wu <quark@fb.com>
parents: 28535
diff changeset
672 def _checkextensions(self):
a979f5b03320 chgserver: invalidate the server if extensions fail to load
Jun Wu <quark@fb.com>
parents: 28535
diff changeset
673 if not self.hashstate:
a979f5b03320 chgserver: invalidate the server if extensions fail to load
Jun Wu <quark@fb.com>
parents: 28535
diff changeset
674 return
a979f5b03320 chgserver: invalidate the server if extensions fail to load
Jun Wu <quark@fb.com>
parents: 28535
diff changeset
675 if extensions.notloaded():
a979f5b03320 chgserver: invalidate the server if extensions fail to load
Jun Wu <quark@fb.com>
parents: 28535
diff changeset
676 # 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
677 # 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
678 # 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
679 self.hashstate.mtimehash = ''
a979f5b03320 chgserver: invalidate the server if extensions fail to load
Jun Wu <quark@fb.com>
parents: 28535
diff changeset
680
28326
ea400a4f32e6 chgserver: mangle server address to include confighash
Jun Wu <quark@fb.com>
parents: 28325
diff changeset
681 def _createsymlink(self):
ea400a4f32e6 chgserver: mangle server address to include confighash
Jun Wu <quark@fb.com>
parents: 28325
diff changeset
682 if self.baseaddress == self.address:
ea400a4f32e6 chgserver: mangle server address to include confighash
Jun Wu <quark@fb.com>
parents: 28325
diff changeset
683 return
ea400a4f32e6 chgserver: mangle server address to include confighash
Jun Wu <quark@fb.com>
parents: 28325
diff changeset
684 tempaddress = _tempaddress(self.baseaddress)
28342
bd05d38a1002 chgserver: use basename for socket symlink
Jun Wu <quark@fb.com>
parents: 28328
diff changeset
685 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
686 util.rename(tempaddress, self.baseaddress)
ea400a4f32e6 chgserver: mangle server address to include confighash
Jun Wu <quark@fb.com>
parents: 28325
diff changeset
687
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
688 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
689 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
690 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
691 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
692 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
693
27792
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
694 def uisetup(ui):
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
695 commandserver._servicemap['chgunix'] = chgunixservice
28261
2ab59ac06b76 chg: detect chg started by chg
Jun Wu <quark@fb.com>
parents: 28223
diff changeset
696
2ab59ac06b76 chg: detect chg started by chg
Jun Wu <quark@fb.com>
parents: 28223
diff changeset
697 # 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
698 # 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
699 if 'CHGINTERNALMARK' in os.environ:
2ab59ac06b76 chg: detect chg started by chg
Jun Wu <quark@fb.com>
parents: 28223
diff changeset
700 del os.environ['CHGINTERNALMARK']