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annotate hgext/chgserver.py @ 30516:dd539e2d89aa

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server: move service table and factory from commandserver This is necessary to solve future dependency cycle between commandserver.py and chgserver.py. 'cmd' prefix is added to table and function names to avoid conflicts with hgweb.
author Yuya Nishihara <yuya@tcha.org>
date Sat, 15 Oct 2016 13:57:17 +0900
parents 39d13b8c101d
children 1873563e1ede
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 errno
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44 import hashlib
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45 import inspect
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46 import os
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47 import re
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48 import signal
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49 import struct
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50 import sys
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51 import time
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52
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53 from mercurial.i18n import _
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54
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55 from mercurial import (
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56 cmdutil,
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57 commands,
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58 commandserver,
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59 dispatch,
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60 error,
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61 extensions,
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62 osutil,
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63 server,
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64 util,
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65 )
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66
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67 # Note for extension authors: ONLY specify testedwith = 'ships-with-hg-core' for
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68 # extensions which SHIP WITH MERCURIAL. Non-mainline extensions should
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69 # be specifying the version(s) of Mercurial they are tested with, or
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70 # leave the attribute unspecified.
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71 testedwith = 'ships-with-hg-core'
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72
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73 _log = commandserver.log
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74
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75 def _hashlist(items):
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76 """return sha1 hexdigest for a list"""
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77 return hashlib.sha1(str(items)).hexdigest()
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78
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79 # sensitive config sections affecting confighash
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80 _configsections = [
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81 'alias', # affects global state commands.table
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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
b4ceadb2c439 chgserver: add utilities to calculate mtimehash
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parents: 28264
diff changeset
151 considered outdated immediately and should no longer provide service.
29462
71ed5a3ef8a9 chgserver: document why we don't merge mtimehash and confighash
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parents: 29433
diff changeset
152
71ed5a3ef8a9 chgserver: document why we don't merge mtimehash and confighash
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parents: 29433
diff changeset
153 mtimehash is not included in confighash because we only know the paths of
71ed5a3ef8a9 chgserver: document why we don't merge mtimehash and confighash
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parents: 29433
diff changeset
154 extensions after importing them (there is imp.find_module but that faces
71ed5a3ef8a9 chgserver: document why we don't merge mtimehash and confighash
Jun Wu <quark@fb.com>
parents: 29433
diff changeset
155 race conditions). We need to calculate confighash without importing.
28276
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diff changeset
156 """
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parents: 28264
diff changeset
157 def trystat(path):
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parents: 28264
diff changeset
158 try:
b4ceadb2c439 chgserver: add utilities to calculate mtimehash
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parents: 28264
diff changeset
159 st = os.stat(path)
b4ceadb2c439 chgserver: add utilities to calculate mtimehash
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parents: 28264
diff changeset
160 return (st.st_mtime, st.st_size)
b4ceadb2c439 chgserver: add utilities to calculate mtimehash
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parents: 28264
diff changeset
161 except OSError:
b4ceadb2c439 chgserver: add utilities to calculate mtimehash
Jun Wu <quark@fb.com>
parents: 28264
diff changeset
162 # could be ENOENT, EPERM etc. not fatal in any case
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Jun Wu <quark@fb.com>
parents: 28264
diff changeset
163 pass
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parents: 28264
diff changeset
164 return _hashlist(map(trystat, paths))[:12]
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diff changeset
165
28277
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diff changeset
166 class hashstate(object):
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diff changeset
167 """a structure storing confighash, mtimehash, paths used for mtimehash"""
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168 def __init__(self, confighash, mtimehash, mtimepaths):
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169 self.confighash = confighash
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diff changeset
170 self.mtimehash = mtimehash
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diff changeset
171 self.mtimepaths = mtimepaths
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diff changeset
172
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diff changeset
173 @staticmethod
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diff changeset
174 def fromui(ui, mtimepaths=None):
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diff changeset
175 if mtimepaths is None:
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diff changeset
176 mtimepaths = _getmtimepaths(ui)
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177 confighash = _confighash(ui)
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178 mtimehash = _mtimehash(mtimepaths)
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179 _log('confighash = %s mtimehash = %s\n' % (confighash, mtimehash))
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180 return hashstate(confighash, mtimehash, mtimepaths)
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181
27792
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182 # copied from hgext/pager.py:uisetup()
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183 def _setuppagercmd(ui, options, cmd):
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184 if not ui.formatted():
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parents:
diff changeset
185 return
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parents:
diff changeset
186
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187 p = ui.config("pager", "pager", os.environ.get("PAGER"))
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188 usepager = False
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189 always = util.parsebool(options['pager'])
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190 auto = options['pager'] == 'auto'
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191
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192 if not p:
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193 pass
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parents:
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194 elif always:
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195 usepager = True
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196 elif not auto:
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197 usepager = False
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198 else:
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199 attended = ['annotate', 'cat', 'diff', 'export', 'glog', 'log', 'qdiff']
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200 attend = ui.configlist('pager', 'attend', attended)
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diff changeset
201 ignore = ui.configlist('pager', 'ignore')
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parents:
diff changeset
202 cmds, _ = cmdutil.findcmd(cmd, commands.table)
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parents:
diff changeset
203
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204 for cmd in cmds:
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205 var = 'attend-%s' % cmd
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diff changeset
206 if ui.config('pager', var):
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207 usepager = ui.configbool('pager', var)
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parents:
diff changeset
208 break
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parents:
diff changeset
209 if (cmd in attend or
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Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
210 (cmd not in ignore and not attend)):
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parents:
diff changeset
211 usepager = True
980957333cfa chgserver: import background server extension from cHg
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parents:
diff changeset
212 break
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parents:
diff changeset
213
980957333cfa chgserver: import background server extension from cHg
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parents:
diff changeset
214 if usepager:
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parents:
diff changeset
215 ui.setconfig('ui', 'formatted', ui.formatted(), 'pager')
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parents:
diff changeset
216 ui.setconfig('ui', 'interactive', False, 'pager')
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parents:
diff changeset
217 return p
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Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
218
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
219 def _newchgui(srcui, csystem):
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diff changeset
220 class chgui(srcui.__class__):
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parents:
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221 def __init__(self, src=None):
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222 super(chgui, self).__init__(src)
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diff changeset
223 if src:
980957333cfa chgserver: import background server extension from cHg
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diff changeset
224 self._csystem = getattr(src, '_csystem', csystem)
980957333cfa chgserver: import background server extension from cHg
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diff changeset
225 else:
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226 self._csystem = csystem
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parents:
diff changeset
227
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diff changeset
228 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
229 errprefix=None):
28586
82cee85d5274 chgserver: use old ui.system if fout is not stdout or needs to be captured
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parents: 28553
diff changeset
230 # 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
Jun Wu <quark@fb.com>
parents: 28553
diff changeset
231 # 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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parents: 28553
diff changeset
232 # (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
Jun Wu <quark@fb.com>
parents: 28553
diff changeset
233 # 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
Jun Wu <quark@fb.com>
parents: 28553
diff changeset
234 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
Jun Wu <quark@fb.com>
parents: 28553
diff changeset
235 or not util.safehasattr(self.fout, 'fileno')
30482
39d13b8c101d py3: bulk replace sys.stdin/out/err by util's
Yuya Nishihara <yuya@tcha.org>
parents: 30342
diff changeset
236 or self.fout.fileno() != util.stdout.fileno()):
28586
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
237 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
238 errprefix)
27792
980957333cfa chgserver: import background server extension from cHg
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parents:
diff changeset
239 # copied from mercurial/util.py:system()
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parents:
diff changeset
240 self.flush()
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parents:
diff changeset
241 def py2shell(val):
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Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
242 if val is None or val is False:
980957333cfa chgserver: import background server extension from cHg
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parents:
diff changeset
243 return '0'
980957333cfa chgserver: import background server extension from cHg
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parents:
diff changeset
244 if val is True:
980957333cfa chgserver: import background server extension from cHg
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parents:
diff changeset
245 return '1'
980957333cfa chgserver: import background server extension from cHg
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parents:
diff changeset
246 return str(val)
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Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
247 env = os.environ.copy()
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
248 if environ:
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parents:
diff changeset
249 env.update((k, py2shell(v)) for k, v in environ.iteritems())
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diff changeset
250 env['HG'] = util.hgexecutable()
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parents:
diff changeset
251 rc = self._csystem(cmd, env, cwd)
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parents:
diff changeset
252 if rc and onerr:
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diff changeset
253 errmsg = '%s %s' % (os.path.basename(cmd.split(None, 1)[0]),
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Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
254 util.explainexit(rc)[0])
980957333cfa chgserver: import background server extension from cHg
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parents:
diff changeset
255 if errprefix:
980957333cfa chgserver: import background server extension from cHg
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parents:
diff changeset
256 errmsg = '%s: %s' % (errprefix, errmsg)
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parents:
diff changeset
257 raise onerr(errmsg)
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diff changeset
258 return rc
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diff changeset
259
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parents:
diff changeset
260 return chgui(srcui)
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parents:
diff changeset
261
28602
83127a9fe76e chgserver: drop old hack to recreate ui on HGPLAIN change
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parents: 28599
diff changeset
262 def _loadnewui(srcui, args):
27792
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diff changeset
263 newui = srcui.__class__()
980957333cfa chgserver: import background server extension from cHg
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parents:
diff changeset
264 for a in ['fin', 'fout', 'ferr', 'environ']:
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parents:
diff changeset
265 setattr(newui, a, getattr(srcui, a))
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
266 if util.safehasattr(srcui, '_csystem'):
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Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
267 newui._csystem = srcui._csystem
28264
3682e201cce6 chgserver: make _renewui load repo and command line configs
Jun Wu <quark@fb.com>
parents: 28262
diff changeset
268
3682e201cce6 chgserver: make _renewui load repo and command line configs
Jun Wu <quark@fb.com>
parents: 28262
diff changeset
269 # internal config: extensions.chgserver
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Jun Wu <quark@fb.com>
parents: 28262
diff changeset
270 newui.setconfig('extensions', 'chgserver',
3682e201cce6 chgserver: make _renewui load repo and command line configs
Jun Wu <quark@fb.com>
parents: 28262
diff changeset
271 srcui.config('extensions', 'chgserver'), '--config')
3682e201cce6 chgserver: make _renewui load repo and command line configs
Jun Wu <quark@fb.com>
parents: 28262
diff changeset
272
3682e201cce6 chgserver: make _renewui load repo and command line configs
Jun Wu <quark@fb.com>
parents: 28262
diff changeset
273 # command line args
28767
73bfd9a54a5c chgserver: move args copying logic to the correct place
Jun Wu <quark@fb.com>
parents: 28603
diff changeset
274 args = args[:]
28264
3682e201cce6 chgserver: make _renewui load repo and command line configs
Jun Wu <quark@fb.com>
parents: 28262
diff changeset
275 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
276
27792
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parents:
diff changeset
277 # stolen from tortoisehg.util.copydynamicconfig()
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parents:
diff changeset
278 for section, name, value in srcui.walkconfig():
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Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
279 source = srcui.configsource(section, name)
28264
3682e201cce6 chgserver: make _renewui load repo and command line configs
Jun Wu <quark@fb.com>
parents: 28262
diff changeset
280 if ':' in source or source == '--config':
3682e201cce6 chgserver: make _renewui load repo and command line configs
Jun Wu <quark@fb.com>
parents: 28262
diff changeset
281 # path:line or command line
27792
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Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
282 continue
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
283 if source == 'none':
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
284 # ui.configsource returns 'none' by default
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parents:
diff changeset
285 source = ''
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parents:
diff changeset
286 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
287
0e7a929754aa chgserver: use global ui instead of repo ui for dispatch.request.ui
Jun Wu <quark@fb.com>
parents: 28586
diff changeset
288 # 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
289 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
290 cwd = cwds and os.path.realpath(cwds[-1]) or None
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291 rpath = dispatch._earlygetopt(["-R", "--repository", "--repo"], args)
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diff changeset
292 path, newlui = dispatch._getlocal(newui, rpath, wd=cwd)
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293
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294 return (newui, newlui)
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295
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296 class channeledsystem(object):
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297 """Propagate ui.system() request in the following format:
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298
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299 payload length (unsigned int),
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300 cmd, '\0',
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301 cwd, '\0',
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302 envkey, '=', val, '\0',
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303 ...
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304 envkey, '=', val
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305
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306 and waits:
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307
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308 exitcode length (unsigned int),
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309 exitcode (int)
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310 """
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311 def __init__(self, in_, out, channel):
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312 self.in_ = in_
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313 self.out = out
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314 self.channel = channel
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315
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diff changeset
316 def __call__(self, cmd, environ, cwd):
28514
0747ef2c4ab2 chgserver: resolve relative path before sending via system channel
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diff changeset
317 args = [util.quotecommand(cmd), os.path.abspath(cwd or '.')]
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318 args.extend('%s=%s' % (k, v) for k, v in environ.iteritems())
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319 data = '\0'.join(args)
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320 self.out.write(struct.pack('>cI', self.channel, len(data)))
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diff changeset
321 self.out.write(data)
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322 self.out.flush()
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323
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324 length = self.in_.read(4)
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diff changeset
325 length, = struct.unpack('>I', length)
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diff changeset
326 if length != 4:
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327 raise error.Abort(_('invalid response'))
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diff changeset
328 rc, = struct.unpack('>i', self.in_.read(4))
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329 return rc
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330
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331 _iochannels = [
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332 # server.ch, ui.fp, mode
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333 ('cin', 'fin', 'rb'),
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334 ('cout', 'fout', 'wb'),
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335 ('cerr', 'ferr', 'wb'),
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336 ]
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337
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diff changeset
338 class chgcmdserver(commandserver.server):
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e00e57d83653 chgserver: pass hashstate and base server address to chgcmdserver
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339 def __init__(self, ui, repo, fin, fout, sock, hashstate, baseaddress):
27792
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diff changeset
340 super(chgcmdserver, self).__init__(
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diff changeset
341 _newchgui(ui, channeledsystem(fin, fout, 'S')), repo, fin, fout)
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parents:
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342 self.clientsock = sock
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343 self._oldios = [] # original (self.ch, ui.fp, fd) before "attachio"
28328
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344 self.hashstate = hashstate
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diff changeset
345 self.baseaddress = baseaddress
28350
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346 if hashstate is not None:
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diff changeset
347 self.capabilities = self.capabilities.copy()
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348 self.capabilities['validate'] = chgcmdserver.validate
27792
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349
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diff changeset
350 def cleanup(self):
29512
538d0003c9e0 commandserver: promote .cleanup() hook from chgserver
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parents: 29511
diff changeset
351 super(chgcmdserver, self).cleanup()
27792
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352 # dispatch._runcatch() does not flush outputs if exception is not
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parents:
diff changeset
353 # handled by dispatch._dispatch()
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diff changeset
354 self.ui.flush()
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355 self._restoreio()
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356
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diff changeset
357 def attachio(self):
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parents:
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
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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))
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
364 clientfds = osutil.recvfds(self.clientsock.fileno())
980957333cfa chgserver: import background server extension from cHg
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parents:
diff changeset
365 _log('received fds: %r\n' % clientfds)
980957333cfa chgserver: import background server extension from cHg
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parents:
diff changeset
366
980957333cfa chgserver: import background server extension from cHg
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parents:
diff changeset
367 ui = self.ui
980957333cfa chgserver: import background server extension from cHg
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parents:
diff changeset
368 ui.flush()
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parents:
diff changeset
369 first = self._saveio()
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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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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())
980957333cfa chgserver: import background server extension from cHg
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diff changeset
374 os.close(fd)
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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
980957333cfa chgserver: import background server extension from cHg
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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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diff changeset
381 if fn == 'ferr':
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diff changeset
382 newfp = fp
980957333cfa chgserver: import background server extension from cHg
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parents:
diff changeset
383 else:
980957333cfa chgserver: import background server extension from cHg
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parents:
diff changeset
384 # make it line buffered explicitly because the default is
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parents:
diff changeset
385 # decided on first write(), where fout could be a pager.
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parents:
diff changeset
386 if fp.isatty():
980957333cfa chgserver: import background server extension from cHg
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diff changeset
387 bufsize = 1 # line buffered
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parents:
diff changeset
388 else:
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diff changeset
389 bufsize = -1 # system default
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diff changeset
390 newfp = os.fdopen(fp.fileno(), mode, bufsize)
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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
980957333cfa chgserver: import background server extension from cHg
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diff changeset
394 self.cresult.write(struct.pack('>i', len(clientfds)))
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parents:
diff changeset
395
980957333cfa chgserver: import background server extension from cHg
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parents:
diff changeset
396 def _saveio(self):
980957333cfa chgserver: import background server extension from cHg
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parents:
diff changeset
397 if self._oldios:
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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
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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):
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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
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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:
28599
0e7a929754aa chgserver: use global ui instead of repo ui for dispatch.request.ui
Jun Wu <quark@fb.com>
parents: 28586
diff changeset
444 self.ui, lui = _loadnewui(self.ui, args)
28516
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
28599
0e7a929754aa chgserver: use global ui instead of repo ui for dispatch.request.ui
Jun Wu <quark@fb.com>
parents: 28586
diff changeset
450 newhash = hashstate.fromui(lui, self.hashstate.mtimepaths)
28350
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:
29428
247ea0dfdb94 chgserver: do not ignore SIGPIPE if pager is used
Jun Wu <quark@fb.com>
parents: 29341
diff changeset
503 # Python's SIGPIPE is SIG_IGN by default. change to SIG_DFL so
247ea0dfdb94 chgserver: do not ignore SIGPIPE if pager is used
Jun Wu <quark@fb.com>
parents: 29341
diff changeset
504 # we can exit if the pipe to the pager is closed
247ea0dfdb94 chgserver: do not ignore SIGPIPE if pager is used
Jun Wu <quark@fb.com>
parents: 29341
diff changeset
505 if util.safehasattr(signal, 'SIGPIPE') and \
247ea0dfdb94 chgserver: do not ignore SIGPIPE if pager is used
Jun Wu <quark@fb.com>
parents: 29341
diff changeset
506 signal.getsignal(signal.SIGPIPE) == signal.SIG_IGN:
247ea0dfdb94 chgserver: do not ignore SIGPIPE if pager is used
Jun Wu <quark@fb.com>
parents: 29341
diff changeset
507 signal.signal(signal.SIGPIPE, signal.SIG_DFL)
27792
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
508 self.cresult.write(pagercmd)
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
509 else:
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
510 self.cresult.write('\0')
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
511
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
512 def setenv(self):
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
513 """Clear and update os.environ
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
514
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
515 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
516 """
28158
7cc57a531f0c chgserver: use _readlist and _readstr
Jun Wu <quark@fb.com>
parents: 28014
diff changeset
517 l = self._readlist()
27792
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
518 try:
28158
7cc57a531f0c chgserver: use _readlist and _readstr
Jun Wu <quark@fb.com>
parents: 28014
diff changeset
519 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
520 except ValueError:
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
521 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
522 _log('setenv: %r\n' % sorted(newenv.keys()))
27792
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
523 os.environ.clear()
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
524 os.environ.update(newenv)
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
525
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
526 capabilities = commandserver.server.capabilities.copy()
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
527 capabilities.update({'attachio': attachio,
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
528 'chdir': chdir,
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
529 'getpager': getpager,
28159
d2d04d1d2f92 chgserver: add setumask method
Jun Wu <quark@fb.com>
parents: 28158
diff changeset
530 'setenv': setenv,
d2d04d1d2f92 chgserver: add setumask method
Jun Wu <quark@fb.com>
parents: 28158
diff changeset
531 'setumask': setumask})
27792
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
532
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
533 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
534 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
535
28326
ea400a4f32e6 chgserver: mangle server address to include confighash
Jun Wu <quark@fb.com>
parents: 28325
diff changeset
536 def _hashaddress(address, hashstr):
ea400a4f32e6 chgserver: mangle server address to include confighash
Jun Wu <quark@fb.com>
parents: 28325
diff changeset
537 return '%s-%s' % (address, hashstr)
ea400a4f32e6 chgserver: mangle server address to include confighash
Jun Wu <quark@fb.com>
parents: 28325
diff changeset
538
29547
300318b7d66d chgserver: switch to new forking service
Yuya Nishihara <yuya@tcha.org>
parents: 29546
diff changeset
539 class chgunixservicehandler(object):
300318b7d66d chgserver: switch to new forking service
Yuya Nishihara <yuya@tcha.org>
parents: 29546
diff changeset
540 """Set of operations for chg services"""
300318b7d66d chgserver: switch to new forking service
Yuya Nishihara <yuya@tcha.org>
parents: 29546
diff changeset
541
300318b7d66d chgserver: switch to new forking service
Yuya Nishihara <yuya@tcha.org>
parents: 29546
diff changeset
542 pollinterval = 1 # [sec]
300318b7d66d chgserver: switch to new forking service
Yuya Nishihara <yuya@tcha.org>
parents: 29546
diff changeset
543
300318b7d66d chgserver: switch to new forking service
Yuya Nishihara <yuya@tcha.org>
parents: 29546
diff changeset
544 def __init__(self, ui):
300318b7d66d chgserver: switch to new forking service
Yuya Nishihara <yuya@tcha.org>
parents: 29546
diff changeset
545 self.ui = ui
29598
a67398726747 chgserver: rename private functions and variables of chgunixservicehandler
Yuya Nishihara <yuya@tcha.org>
parents: 29597
diff changeset
546 self._idletimeout = ui.configint('chgserver', 'idletimeout', 3600)
a67398726747 chgserver: rename private functions and variables of chgunixservicehandler
Yuya Nishihara <yuya@tcha.org>
parents: 29597
diff changeset
547 self._lastactive = time.time()
29547
300318b7d66d chgserver: switch to new forking service
Yuya Nishihara <yuya@tcha.org>
parents: 29546
diff changeset
548
300318b7d66d chgserver: switch to new forking service
Yuya Nishihara <yuya@tcha.org>
parents: 29546
diff changeset
549 def bindsocket(self, sock, address):
29597
581c0c7cb258 chgserver: refactor initialization of real/base addresses
Yuya Nishihara <yuya@tcha.org>
parents: 29596
diff changeset
550 self._inithashstate(address)
29545
28aca3fafc2a chgserver: reorder service classes to make future patches readable
Yuya Nishihara <yuya@tcha.org>
parents: 29543
diff changeset
551 self._checkextensions()
29547
300318b7d66d chgserver: switch to new forking service
Yuya Nishihara <yuya@tcha.org>
parents: 29546
diff changeset
552 self._bind(sock)
29545
28aca3fafc2a chgserver: reorder service classes to make future patches readable
Yuya Nishihara <yuya@tcha.org>
parents: 29543
diff changeset
553 self._createsymlink()
28aca3fafc2a chgserver: reorder service classes to make future patches readable
Yuya Nishihara <yuya@tcha.org>
parents: 29543
diff changeset
554
29597
581c0c7cb258 chgserver: refactor initialization of real/base addresses
Yuya Nishihara <yuya@tcha.org>
parents: 29596
diff changeset
555 def _inithashstate(self, address):
29598
a67398726747 chgserver: rename private functions and variables of chgunixservicehandler
Yuya Nishihara <yuya@tcha.org>
parents: 29597
diff changeset
556 self._baseaddress = address
29545
28aca3fafc2a chgserver: reorder service classes to make future patches readable
Yuya Nishihara <yuya@tcha.org>
parents: 29543
diff changeset
557 if self.ui.configbool('chgserver', 'skiphash', False):
29598
a67398726747 chgserver: rename private functions and variables of chgunixservicehandler
Yuya Nishihara <yuya@tcha.org>
parents: 29597
diff changeset
558 self._hashstate = None
a67398726747 chgserver: rename private functions and variables of chgunixservicehandler
Yuya Nishihara <yuya@tcha.org>
parents: 29597
diff changeset
559 self._realaddress = address
29545
28aca3fafc2a chgserver: reorder service classes to make future patches readable
Yuya Nishihara <yuya@tcha.org>
parents: 29543
diff changeset
560 return
29598
a67398726747 chgserver: rename private functions and variables of chgunixservicehandler
Yuya Nishihara <yuya@tcha.org>
parents: 29597
diff changeset
561 self._hashstate = hashstate.fromui(self.ui)
a67398726747 chgserver: rename private functions and variables of chgunixservicehandler
Yuya Nishihara <yuya@tcha.org>
parents: 29597
diff changeset
562 self._realaddress = _hashaddress(address, self._hashstate.confighash)
29545
28aca3fafc2a chgserver: reorder service classes to make future patches readable
Yuya Nishihara <yuya@tcha.org>
parents: 29543
diff changeset
563
28aca3fafc2a chgserver: reorder service classes to make future patches readable
Yuya Nishihara <yuya@tcha.org>
parents: 29543
diff changeset
564 def _checkextensions(self):
29598
a67398726747 chgserver: rename private functions and variables of chgunixservicehandler
Yuya Nishihara <yuya@tcha.org>
parents: 29597
diff changeset
565 if not self._hashstate:
29545
28aca3fafc2a chgserver: reorder service classes to make future patches readable
Yuya Nishihara <yuya@tcha.org>
parents: 29543
diff changeset
566 return
28aca3fafc2a chgserver: reorder service classes to make future patches readable
Yuya Nishihara <yuya@tcha.org>
parents: 29543
diff changeset
567 if extensions.notloaded():
28aca3fafc2a chgserver: reorder service classes to make future patches readable
Yuya Nishihara <yuya@tcha.org>
parents: 29543
diff changeset
568 # one or more extensions failed to load. mtimehash becomes
28aca3fafc2a chgserver: reorder service classes to make future patches readable
Yuya Nishihara <yuya@tcha.org>
parents: 29543
diff changeset
569 # meaningless because we do not know the paths of those extensions.
28aca3fafc2a chgserver: reorder service classes to make future patches readable
Yuya Nishihara <yuya@tcha.org>
parents: 29543
diff changeset
570 # set mtimehash to an illegal hash value to invalidate the server.
29598
a67398726747 chgserver: rename private functions and variables of chgunixservicehandler
Yuya Nishihara <yuya@tcha.org>
parents: 29597
diff changeset
571 self._hashstate.mtimehash = ''
29545
28aca3fafc2a chgserver: reorder service classes to make future patches readable
Yuya Nishihara <yuya@tcha.org>
parents: 29543
diff changeset
572
29547
300318b7d66d chgserver: switch to new forking service
Yuya Nishihara <yuya@tcha.org>
parents: 29546
diff changeset
573 def _bind(self, sock):
28223
0a853dc9b306 chgserver: auto exit after being idle for too long or lose the socket file
Jun Wu <quark@fb.com>
parents: 28159
diff changeset
574 # 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
575 # check later
29598
a67398726747 chgserver: rename private functions and variables of chgunixservicehandler
Yuya Nishihara <yuya@tcha.org>
parents: 29597
diff changeset
576 tempaddress = _tempaddress(self._realaddress)
29547
300318b7d66d chgserver: switch to new forking service
Yuya Nishihara <yuya@tcha.org>
parents: 29546
diff changeset
577 util.bindunixsocket(sock, tempaddress)
29529
02de1dbd4f6e chgserver: narrow scope of chdir() to socket.bind()
Yuya Nishihara <yuya@tcha.org>
parents: 29513
diff changeset
578 self._socketstat = os.stat(tempaddress)
02de1dbd4f6e chgserver: narrow scope of chdir() to socket.bind()
Yuya Nishihara <yuya@tcha.org>
parents: 29513
diff changeset
579 # rename will replace the old socket file if exists atomically. the
02de1dbd4f6e chgserver: narrow scope of chdir() to socket.bind()
Yuya Nishihara <yuya@tcha.org>
parents: 29513
diff changeset
580 # old server will detect ownership change and exit.
29598
a67398726747 chgserver: rename private functions and variables of chgunixservicehandler
Yuya Nishihara <yuya@tcha.org>
parents: 29597
diff changeset
581 util.rename(tempaddress, self._realaddress)
28223
0a853dc9b306 chgserver: auto exit after being idle for too long or lose the socket file
Jun Wu <quark@fb.com>
parents: 28159
diff changeset
582
29596
71c197d82b7e chgserver: reorder functions in chgunixservicehandler
Yuya Nishihara <yuya@tcha.org>
parents: 29595
diff changeset
583 def _createsymlink(self):
29598
a67398726747 chgserver: rename private functions and variables of chgunixservicehandler
Yuya Nishihara <yuya@tcha.org>
parents: 29597
diff changeset
584 if self._baseaddress == self._realaddress:
29596
71c197d82b7e chgserver: reorder functions in chgunixservicehandler
Yuya Nishihara <yuya@tcha.org>
parents: 29595
diff changeset
585 return
29598
a67398726747 chgserver: rename private functions and variables of chgunixservicehandler
Yuya Nishihara <yuya@tcha.org>
parents: 29597
diff changeset
586 tempaddress = _tempaddress(self._baseaddress)
a67398726747 chgserver: rename private functions and variables of chgunixservicehandler
Yuya Nishihara <yuya@tcha.org>
parents: 29597
diff changeset
587 os.symlink(os.path.basename(self._realaddress), tempaddress)
a67398726747 chgserver: rename private functions and variables of chgunixservicehandler
Yuya Nishihara <yuya@tcha.org>
parents: 29597
diff changeset
588 util.rename(tempaddress, self._baseaddress)
29596
71c197d82b7e chgserver: reorder functions in chgunixservicehandler
Yuya Nishihara <yuya@tcha.org>
parents: 29595
diff changeset
589
29598
a67398726747 chgserver: rename private functions and variables of chgunixservicehandler
Yuya Nishihara <yuya@tcha.org>
parents: 29597
diff changeset
590 def _issocketowner(self):
28223
0a853dc9b306 chgserver: auto exit after being idle for too long or lose the socket file
Jun Wu <quark@fb.com>
parents: 28159
diff changeset
591 try:
29598
a67398726747 chgserver: rename private functions and variables of chgunixservicehandler
Yuya Nishihara <yuya@tcha.org>
parents: 29597
diff changeset
592 stat = os.stat(self._realaddress)
28223
0a853dc9b306 chgserver: auto exit after being idle for too long or lose the socket file
Jun Wu <quark@fb.com>
parents: 28159
diff changeset
593 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
594 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
595 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
596 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
597
29547
300318b7d66d chgserver: switch to new forking service
Yuya Nishihara <yuya@tcha.org>
parents: 29546
diff changeset
598 def unlinksocket(self, address):
29598
a67398726747 chgserver: rename private functions and variables of chgunixservicehandler
Yuya Nishihara <yuya@tcha.org>
parents: 29597
diff changeset
599 if not self._issocketowner():
28223
0a853dc9b306 chgserver: auto exit after being idle for too long or lose the socket file
Jun Wu <quark@fb.com>
parents: 28159
diff changeset
600 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
601 # 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
602 # 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
603 # 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
604 # 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
605 try:
29598
a67398726747 chgserver: rename private functions and variables of chgunixservicehandler
Yuya Nishihara <yuya@tcha.org>
parents: 29597
diff changeset
606 os.unlink(self._realaddress)
28223
0a853dc9b306 chgserver: auto exit after being idle for too long or lose the socket file
Jun Wu <quark@fb.com>
parents: 28159
diff changeset
607 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
608 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
609 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
610
29596
71c197d82b7e chgserver: reorder functions in chgunixservicehandler
Yuya Nishihara <yuya@tcha.org>
parents: 29595
diff changeset
611 def printbanner(self, address):
71c197d82b7e chgserver: reorder functions in chgunixservicehandler
Yuya Nishihara <yuya@tcha.org>
parents: 29595
diff changeset
612 # no "listening at" message should be printed to simulate hg behavior
71c197d82b7e chgserver: reorder functions in chgunixservicehandler
Yuya Nishihara <yuya@tcha.org>
parents: 29595
diff changeset
613 pass
71c197d82b7e chgserver: reorder functions in chgunixservicehandler
Yuya Nishihara <yuya@tcha.org>
parents: 29595
diff changeset
614
71c197d82b7e chgserver: reorder functions in chgunixservicehandler
Yuya Nishihara <yuya@tcha.org>
parents: 29595
diff changeset
615 def shouldexit(self):
29598
a67398726747 chgserver: rename private functions and variables of chgunixservicehandler
Yuya Nishihara <yuya@tcha.org>
parents: 29597
diff changeset
616 if not self._issocketowner():
a67398726747 chgserver: rename private functions and variables of chgunixservicehandler
Yuya Nishihara <yuya@tcha.org>
parents: 29597
diff changeset
617 self.ui.debug('%s is not owned, exiting.\n' % self._realaddress)
29596
71c197d82b7e chgserver: reorder functions in chgunixservicehandler
Yuya Nishihara <yuya@tcha.org>
parents: 29595
diff changeset
618 return True
29598
a67398726747 chgserver: rename private functions and variables of chgunixservicehandler
Yuya Nishihara <yuya@tcha.org>
parents: 29597
diff changeset
619 if time.time() - self._lastactive > self._idletimeout:
29596
71c197d82b7e chgserver: reorder functions in chgunixservicehandler
Yuya Nishihara <yuya@tcha.org>
parents: 29595
diff changeset
620 self.ui.debug('being idle too long. exiting.\n')
71c197d82b7e chgserver: reorder functions in chgunixservicehandler
Yuya Nishihara <yuya@tcha.org>
parents: 29595
diff changeset
621 return True
71c197d82b7e chgserver: reorder functions in chgunixservicehandler
Yuya Nishihara <yuya@tcha.org>
parents: 29595
diff changeset
622 return False
71c197d82b7e chgserver: reorder functions in chgunixservicehandler
Yuya Nishihara <yuya@tcha.org>
parents: 29595
diff changeset
623
71c197d82b7e chgserver: reorder functions in chgunixservicehandler
Yuya Nishihara <yuya@tcha.org>
parents: 29595
diff changeset
624 def newconnection(self):
29598
a67398726747 chgserver: rename private functions and variables of chgunixservicehandler
Yuya Nishihara <yuya@tcha.org>
parents: 29597
diff changeset
625 self._lastactive = time.time()
29596
71c197d82b7e chgserver: reorder functions in chgunixservicehandler
Yuya Nishihara <yuya@tcha.org>
parents: 29595
diff changeset
626
29547
300318b7d66d chgserver: switch to new forking service
Yuya Nishihara <yuya@tcha.org>
parents: 29546
diff changeset
627 def createcmdserver(self, repo, conn, fin, fout):
300318b7d66d chgserver: switch to new forking service
Yuya Nishihara <yuya@tcha.org>
parents: 29546
diff changeset
628 return chgcmdserver(self.ui, repo, fin, fout, conn,
29598
a67398726747 chgserver: rename private functions and variables of chgunixservicehandler
Yuya Nishihara <yuya@tcha.org>
parents: 29597
diff changeset
629 self._hashstate, self._baseaddress)
28223
0a853dc9b306 chgserver: auto exit after being idle for too long or lose the socket file
Jun Wu <quark@fb.com>
parents: 28159
diff changeset
630
29546
a7513390a9db chgserver: extract stub factory of service object
Yuya Nishihara <yuya@tcha.org>
parents: 29545
diff changeset
631 def chgunixservice(ui, repo, opts):
a7513390a9db chgserver: extract stub factory of service object
Yuya Nishihara <yuya@tcha.org>
parents: 29545
diff changeset
632 if repo:
30342
318a24b52eeb spelling: fixes of non-dictionary words
Mads Kiilerich <madski@unity3d.com>
parents: 29852
diff changeset
633 # one chgserver can serve multiple repos. drop repo information
29546
a7513390a9db chgserver: extract stub factory of service object
Yuya Nishihara <yuya@tcha.org>
parents: 29545
diff changeset
634 ui.setconfig('bundle', 'mainreporoot', '', 'repo')
29547
300318b7d66d chgserver: switch to new forking service
Yuya Nishihara <yuya@tcha.org>
parents: 29546
diff changeset
635 h = chgunixservicehandler(ui)
300318b7d66d chgserver: switch to new forking service
Yuya Nishihara <yuya@tcha.org>
parents: 29546
diff changeset
636 return commandserver.unixforkingservice(ui, repo=None, opts=opts, handler=h)
29546
a7513390a9db chgserver: extract stub factory of service object
Yuya Nishihara <yuya@tcha.org>
parents: 29545
diff changeset
637
27792
980957333cfa chgserver: import background server extension from cHg
Yuya Nishihara <yuya@tcha.org>
parents:
diff changeset
638 def uisetup(ui):
30516
dd539e2d89aa server: move service table and factory from commandserver
Yuya Nishihara <yuya@tcha.org>
parents: 30482
diff changeset
639 server._cmdservicemap['chgunix'] = chgunixservice
28261
2ab59ac06b76 chg: detect chg started by chg
Jun Wu <quark@fb.com>
parents: 28223
diff changeset
640
2ab59ac06b76 chg: detect chg started by chg
Jun Wu <quark@fb.com>
parents: 28223
diff changeset
641 # 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
642 # 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
643 if 'CHGINTERNALMARK' in os.environ:
2ab59ac06b76 chg: detect chg started by chg
Jun Wu <quark@fb.com>
parents: 28223
diff changeset
644 del os.environ['CHGINTERNALMARK']