Mercurial > hg
annotate mercurial/server.py @ 45438:ed95ccc94333
rhg: pass `ui` to `Command` `run`
Allow implementation of `From<clap::ArgMatches> for Command`
Differential Revision: https://phab.mercurial-scm.org/D8954
author | Antoine Cezar <antoine.cezar@octobus.net> |
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date | Tue, 04 Aug 2020 16:11:23 +0200 |
parents | eef9a2d67051 |
children | d4ba4d51f85f |
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1 # server.py - utility and factory of server |
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2 # |
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3 # Copyright 2005-2007 Matt Mackall <mpm@selenic.com> |
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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 from __future__ import absolute_import |
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9 |
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10 import os |
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11 |
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12 from .i18n import _ |
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13 from .pycompat import open |
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14 |
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15 from . import ( |
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16 chgserver, |
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17 cmdutil, |
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18 commandserver, |
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19 error, |
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20 hgweb, |
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21 pycompat, |
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22 util, |
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23 ) |
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24 |
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25 from .utils import procutil |
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26 |
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27 |
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28 def runservice( |
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29 opts, |
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30 parentfn=None, |
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31 initfn=None, |
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32 runfn=None, |
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33 logfile=None, |
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34 runargs=None, |
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35 appendpid=False, |
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36 ): |
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37 '''Run a command as a service.''' |
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38 |
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39 postexecargs = {} |
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40 |
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41 if opts[b'daemon_postexec']: |
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42 for inst in opts[b'daemon_postexec']: |
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43 if inst.startswith(b'unlink:'): |
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44 postexecargs[b'unlink'] = inst[7:] |
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45 elif inst.startswith(b'chdir:'): |
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46 postexecargs[b'chdir'] = inst[6:] |
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47 elif inst != b'none': |
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48 raise error.Abort( |
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49 _(b'invalid value for --daemon-postexec: %s') % inst |
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50 ) |
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51 |
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52 # When daemonized on Windows, redirect stdout/stderr to the lockfile (which |
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53 # gets cleaned up after the child is up and running), so that the parent can |
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54 # read and print the error if this child dies early. See 594dd384803c. On |
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55 # other platforms, the child can write to the parent's stdio directly, until |
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56 # it is redirected prior to runfn(). |
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57 if pycompat.iswindows and opts[b'daemon_postexec']: |
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58 if b'unlink' in postexecargs and os.path.exists( |
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59 postexecargs[b'unlink'] |
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60 ): |
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61 procutil.stdout.flush() |
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62 procutil.stderr.flush() |
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63 |
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64 fd = os.open( |
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65 postexecargs[b'unlink'], os.O_WRONLY | os.O_APPEND | os.O_BINARY |
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66 ) |
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67 try: |
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68 os.dup2(fd, procutil.stdout.fileno()) |
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69 os.dup2(fd, procutil.stderr.fileno()) |
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70 finally: |
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71 os.close(fd) |
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72 |
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73 def writepid(pid): |
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74 if opts[b'pid_file']: |
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75 if appendpid: |
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76 mode = b'ab' |
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77 else: |
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78 mode = b'wb' |
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79 fp = open(opts[b'pid_file'], mode) |
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80 fp.write(b'%d\n' % pid) |
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81 fp.close() |
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82 |
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83 if opts[b'daemon'] and not opts[b'daemon_postexec']: |
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84 # Signal child process startup with file removal |
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85 lockfd, lockpath = pycompat.mkstemp(prefix=b'hg-service-') |
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86 os.close(lockfd) |
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87 try: |
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88 if not runargs: |
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89 runargs = procutil.hgcmd() + pycompat.sysargv[1:] |
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90 runargs.append(b'--daemon-postexec=unlink:%s' % lockpath) |
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91 # Don't pass --cwd to the child process, because we've already |
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92 # changed directory. |
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93 for i in pycompat.xrange(1, len(runargs)): |
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94 if runargs[i].startswith(b'--cwd='): |
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95 del runargs[i] |
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96 break |
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97 elif runargs[i].startswith(b'--cwd'): |
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98 del runargs[i : i + 2] |
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99 break |
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100 |
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101 def condfn(): |
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102 return not os.path.exists(lockpath) |
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103 |
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104 pid = procutil.rundetached(runargs, condfn) |
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105 if pid < 0: |
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106 # If the daemonized process managed to write out an error msg, |
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107 # report it. |
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108 if pycompat.iswindows and os.path.exists(lockpath): |
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109 with open(lockpath, b'rb') as log: |
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110 for line in log: |
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111 procutil.stderr.write(line) |
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112 raise error.Abort(_(b'child process failed to start')) |
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113 writepid(pid) |
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114 finally: |
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116 if parentfn: |
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117 return parentfn(pid) |
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118 else: |
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119 return |
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120 |
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121 if initfn: |
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122 initfn() |
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123 |
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124 if not opts[b'daemon']: |
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125 writepid(procutil.getpid()) |
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126 |
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127 if opts[b'daemon_postexec']: |
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128 try: |
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129 os.setsid() |
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130 except AttributeError: |
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131 pass |
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132 |
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133 if b'chdir' in postexecargs: |
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134 os.chdir(postexecargs[b'chdir']) |
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135 procutil.hidewindow() |
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136 procutil.stdout.flush() |
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137 procutil.stderr.flush() |
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138 |
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139 nullfd = os.open(os.devnull, os.O_RDWR) |
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140 logfilefd = nullfd |
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141 if logfile: |
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142 logfilefd = os.open( |
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143 logfile, os.O_RDWR | os.O_CREAT | os.O_APPEND, 0o666 |
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144 ) |
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145 os.dup2(nullfd, procutil.stdin.fileno()) |
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146 os.dup2(logfilefd, procutil.stdout.fileno()) |
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147 os.dup2(logfilefd, procutil.stderr.fileno()) |
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148 stdio = ( |
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149 procutil.stdin.fileno(), |
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150 procutil.stdout.fileno(), |
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151 procutil.stderr.fileno(), |
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152 ) |
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153 if nullfd not in stdio: |
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154 os.close(nullfd) |
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155 if logfile and logfilefd not in stdio: |
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156 os.close(logfilefd) |
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157 |
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158 # Only unlink after redirecting stdout/stderr, so Windows doesn't |
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159 # complain about a sharing violation. |
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160 if b'unlink' in postexecargs: |
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161 os.unlink(postexecargs[b'unlink']) |
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162 |
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163 if runfn: |
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164 return runfn() |
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165 |
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166 |
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167 _cmdservicemap = { |
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168 b'chgunix': chgserver.chgunixservice, |
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169 b'pipe': commandserver.pipeservice, |
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170 b'unix': commandserver.unixforkingservice, |
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171 } |
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172 |
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173 |
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174 def _createcmdservice(ui, repo, opts): |
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175 mode = opts[b'cmdserver'] |
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176 try: |
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177 servicefn = _cmdservicemap[mode] |
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178 except KeyError: |
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179 raise error.Abort(_(b'unknown mode %s') % mode) |
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180 commandserver.setuplogging(ui, repo) |
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181 return servicefn(ui, repo, opts) |
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182 |
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183 |
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184 def _createhgwebservice(ui, repo, opts): |
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185 # this way we can check if something was given in the command-line |
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186 if opts.get(b'port'): |
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187 opts[b'port'] = util.getport(opts.get(b'port')) |
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188 |
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189 alluis = {ui} |
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190 if repo: |
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191 baseui = repo.baseui |
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192 alluis.update([repo.baseui, repo.ui]) |
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193 else: |
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194 baseui = ui |
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195 webconf = opts.get(b'web_conf') or opts.get(b'webdir_conf') |
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196 if webconf: |
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197 if opts.get(b'subrepos'): |
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198 raise error.Abort(_(b'--web-conf cannot be used with --subrepos')) |
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199 |
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200 # load server settings (e.g. web.port) to "copied" ui, which allows |
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201 # hgwebdir to reload webconf cleanly |
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202 servui = ui.copy() |
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203 servui.readconfig(webconf, sections=[b'web']) |
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204 alluis.add(servui) |
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205 elif opts.get(b'subrepos'): |
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206 servui = ui |
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207 |
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208 # If repo is None, hgweb.createapp() already raises a proper abort |
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209 # message as long as webconf is None. |
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210 if repo: |
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211 webconf = dict() |
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212 cmdutil.addwebdirpath(repo, b"", webconf) |
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213 else: |
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214 servui = ui |
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215 |
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216 optlist = ( |
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217 b"name templates style address port prefix ipv6" |
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218 b" accesslog errorlog certificate encoding" |
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219 ) |
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220 for o in optlist.split(): |
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221 val = opts.get(o, b'') |
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222 if val in (None, b''): # should check against default options instead |
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223 continue |
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224 for u in alluis: |
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225 u.setconfig(b"web", o, val, b'serve') |
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226 |
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227 app = hgweb.createapp(baseui, repo, webconf) |
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228 return hgweb.httpservice(servui, app, opts) |
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229 |
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230 |
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231 def createservice(ui, repo, opts): |
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232 if opts[b"cmdserver"]: |
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233 return _createcmdservice(ui, repo, opts) |
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234 else: |
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235 return _createhgwebservice(ui, repo, opts) |