Mercurial > hg
annotate mercurial/server.py @ 50408:82e5a9b1ef1e
extras: re-use Projection from jaraco.collections
author | Jason R. Coombs <jaraco@jaraco.com> |
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date | Tue, 21 Mar 2023 20:47:30 -0400 |
parents | d44e3c45f0e4 |
children | f4733654f144 |
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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 Olivia Mackall <olivia@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 |
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9 import os |
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10 |
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11 from .i18n import _ |
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12 from .pycompat import open |
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13 |
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14 from . import ( |
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15 chgserver, |
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16 cmdutil, |
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17 commandserver, |
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18 error, |
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19 hgweb, |
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20 pycompat, |
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21 util, |
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22 ) |
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23 |
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24 from .utils import ( |
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25 procutil, |
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26 urlutil, |
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27 ) |
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28 |
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29 |
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30 def runservice( |
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31 opts, |
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32 parentfn=None, |
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33 initfn=None, |
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34 runfn=None, |
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35 logfile=None, |
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36 runargs=None, |
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37 appendpid=False, |
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38 ): |
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39 '''Run a command as a service.''' |
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40 |
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41 postexecargs = {} |
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42 |
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43 if opts[b'daemon_postexec']: |
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44 for inst in opts[b'daemon_postexec']: |
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45 if inst.startswith(b'unlink:'): |
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46 postexecargs[b'unlink'] = inst[7:] |
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47 elif inst.startswith(b'chdir:'): |
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48 postexecargs[b'chdir'] = inst[6:] |
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49 elif inst != b'none': |
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50 raise error.Abort( |
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51 _(b'invalid value for --daemon-postexec: %s') % inst |
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52 ) |
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53 |
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54 # When daemonized on Windows, redirect stdout/stderr to the lockfile (which |
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55 # gets cleaned up after the child is up and running), so that the parent can |
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56 # read and print the error if this child dies early. See 594dd384803c. On |
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57 # other platforms, the child can write to the parent's stdio directly, until |
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58 # it is redirected prior to runfn(). |
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59 if pycompat.iswindows and opts[b'daemon_postexec']: |
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60 if b'unlink' in postexecargs and os.path.exists( |
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61 postexecargs[b'unlink'] |
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62 ): |
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63 procutil.stdout.flush() |
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64 procutil.stderr.flush() |
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65 |
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66 fd = os.open( |
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67 postexecargs[b'unlink'], os.O_WRONLY | os.O_APPEND | os.O_BINARY |
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68 ) |
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69 try: |
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70 os.dup2(fd, procutil.stdout.fileno()) |
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71 os.dup2(fd, procutil.stderr.fileno()) |
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72 finally: |
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73 os.close(fd) |
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74 |
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75 def writepid(pid): |
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76 if opts[b'pid_file']: |
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77 if appendpid: |
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78 mode = b'ab' |
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79 else: |
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80 mode = b'wb' |
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81 fp = open(opts[b'pid_file'], mode) |
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82 fp.write(b'%d\n' % pid) |
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83 fp.close() |
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84 |
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85 if opts[b'daemon'] and not opts[b'daemon_postexec']: |
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86 # Signal child process startup with file removal |
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87 lockfd, lockpath = pycompat.mkstemp(prefix=b'hg-service-') |
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88 os.close(lockfd) |
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89 try: |
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90 if not runargs: |
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91 runargs = procutil.hgcmd() + pycompat.sysargv[1:] |
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92 runargs.append(b'--daemon-postexec=unlink:%s' % lockpath) |
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93 # Don't pass --cwd to the child process, because we've already |
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94 # changed directory. |
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95 for i in range(1, len(runargs)): |
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96 if runargs[i].startswith(b'--cwd='): |
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97 del runargs[i] |
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98 break |
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99 elif runargs[i].startswith(b'--cwd'): |
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100 del runargs[i : i + 2] |
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101 break |
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102 |
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103 def condfn(): |
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104 return not os.path.exists(lockpath) |
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105 |
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106 pid = procutil.rundetached(runargs, condfn) |
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107 if pid < 0: |
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108 # If the daemonized process managed to write out an error msg, |
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109 # report it. |
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110 if pycompat.iswindows and os.path.exists(lockpath): |
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111 with open(lockpath, b'rb') as log: |
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112 for line in log: |
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113 procutil.stderr.write(line) |
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114 raise error.Abort(_(b'child process failed to start')) |
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115 writepid(pid) |
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116 finally: |
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118 if parentfn: |
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119 return parentfn(pid) |
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120 else: |
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121 return |
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122 |
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123 if initfn: |
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124 initfn() |
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125 |
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126 if not opts[b'daemon']: |
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127 writepid(procutil.getpid()) |
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128 |
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129 if opts[b'daemon_postexec']: |
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130 try: |
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131 os.setsid() |
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132 except AttributeError: |
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133 pass |
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134 |
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135 if b'chdir' in postexecargs: |
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136 os.chdir(postexecargs[b'chdir']) |
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137 procutil.hidewindow() |
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138 procutil.stdout.flush() |
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139 procutil.stderr.flush() |
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140 |
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141 nullfd = os.open(os.devnull, os.O_RDWR) |
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142 logfilefd = nullfd |
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143 if logfile: |
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144 logfilefd = os.open( |
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145 logfile, os.O_RDWR | os.O_CREAT | os.O_APPEND, 0o666 |
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146 ) |
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147 os.dup2(nullfd, procutil.stdin.fileno()) |
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148 os.dup2(logfilefd, procutil.stdout.fileno()) |
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149 os.dup2(logfilefd, procutil.stderr.fileno()) |
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150 stdio = ( |
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151 procutil.stdin.fileno(), |
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152 procutil.stdout.fileno(), |
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153 procutil.stderr.fileno(), |
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154 ) |
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155 if nullfd not in stdio: |
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156 os.close(nullfd) |
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157 if logfile and logfilefd not in stdio: |
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158 os.close(logfilefd) |
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159 |
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160 # Only unlink after redirecting stdout/stderr, so Windows doesn't |
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161 # complain about a sharing violation. |
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162 if b'unlink' in postexecargs: |
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163 os.unlink(postexecargs[b'unlink']) |
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164 |
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165 if runfn: |
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166 return runfn() |
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167 |
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168 |
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169 _cmdservicemap = { |
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170 b'chgunix': chgserver.chgunixservice, |
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171 b'pipe': commandserver.pipeservice, |
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172 b'unix': commandserver.unixforkingservice, |
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173 } |
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174 |
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175 |
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176 def _createcmdservice(ui, repo, opts): |
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177 mode = opts[b'cmdserver'] |
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178 try: |
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179 servicefn = _cmdservicemap[mode] |
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180 except KeyError: |
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181 raise error.Abort(_(b'unknown mode %s') % mode) |
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182 commandserver.setuplogging(ui, repo) |
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183 return servicefn(ui, repo, opts) |
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184 |
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185 |
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186 def _createhgwebservice(ui, repo, opts): |
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187 # this way we can check if something was given in the command-line |
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188 if opts.get(b'port'): |
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189 opts[b'port'] = urlutil.getport(opts.get(b'port')) |
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190 |
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191 alluis = {ui} |
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192 if repo: |
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193 baseui = repo.baseui |
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194 alluis.update([repo.baseui, repo.ui]) |
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195 else: |
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196 baseui = ui |
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197 webconf = opts.get(b'web_conf') or opts.get(b'webdir_conf') |
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198 if webconf: |
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199 if opts.get(b'subrepos'): |
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200 raise error.Abort(_(b'--web-conf cannot be used with --subrepos')) |
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201 |
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202 # load server settings (e.g. web.port) to "copied" ui, which allows |
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203 # hgwebdir to reload webconf cleanly |
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204 servui = ui.copy() |
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205 servui.readconfig(webconf, sections=[b'web']) |
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206 alluis.add(servui) |
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207 elif opts.get(b'subrepos'): |
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208 servui = ui |
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209 |
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210 # If repo is None, hgweb.createapp() already raises a proper abort |
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211 # message as long as webconf is None. |
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212 if repo: |
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213 webconf = dict() |
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214 cmdutil.addwebdirpath(repo, b"", webconf) |
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215 else: |
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216 servui = ui |
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217 |
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218 optlist = ( |
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219 b"name templates style address port prefix ipv6" |
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220 b" accesslog errorlog certificate encoding" |
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221 ) |
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222 for o in optlist.split(): |
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223 val = opts.get(o, b'') |
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224 if val in (None, b''): # should check against default options instead |
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225 continue |
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226 for u in alluis: |
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227 u.setconfig(b"web", o, val, b'serve') |
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228 |
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229 app = hgweb.createapp(baseui, repo, webconf) |
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230 return hgweb.httpservice(servui, app, opts) |
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231 |
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232 |
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233 def createservice(ui, repo, opts): |
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234 if opts[b"cmdserver"]: |
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235 return _createcmdservice(ui, repo, opts) |
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236 else: |
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237 return _createhgwebservice(ui, repo, opts) |