Mercurial > hg
annotate mercurial/server.py @ 30507:dd539e2d89aa
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> |
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date | Sat, 15 Oct 2016 13:57:17 +0900 |
parents | d9d8d78e6bc9 |
children | add7bcad1d9c |
rev | line source |
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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 errno |
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11 import os |
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12 import sys |
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13 import tempfile |
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14 |
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15 from .i18n import _ |
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16 |
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17 from . import ( |
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18 commandserver, |
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19 error, |
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20 util, |
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21 ) |
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22 |
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23 def runservice(opts, parentfn=None, initfn=None, runfn=None, logfile=None, |
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24 runargs=None, appendpid=False): |
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25 '''Run a command as a service.''' |
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26 |
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27 def writepid(pid): |
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28 if opts['pid_file']: |
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29 if appendpid: |
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30 mode = 'a' |
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31 else: |
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32 mode = 'w' |
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33 fp = open(opts['pid_file'], mode) |
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34 fp.write(str(pid) + '\n') |
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35 fp.close() |
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36 |
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37 if opts['daemon'] and not opts['daemon_postexec']: |
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38 # Signal child process startup with file removal |
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39 lockfd, lockpath = tempfile.mkstemp(prefix='hg-service-') |
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40 os.close(lockfd) |
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41 try: |
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42 if not runargs: |
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43 runargs = util.hgcmd() + sys.argv[1:] |
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44 runargs.append('--daemon-postexec=unlink:%s' % lockpath) |
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45 # Don't pass --cwd to the child process, because we've already |
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46 # changed directory. |
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47 for i in xrange(1, len(runargs)): |
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48 if runargs[i].startswith('--cwd='): |
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49 del runargs[i] |
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50 break |
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51 elif runargs[i].startswith('--cwd'): |
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52 del runargs[i:i + 2] |
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53 break |
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54 def condfn(): |
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55 return not os.path.exists(lockpath) |
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56 pid = util.rundetached(runargs, condfn) |
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57 if pid < 0: |
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58 raise error.Abort(_('child process failed to start')) |
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59 writepid(pid) |
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60 finally: |
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61 try: |
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62 os.unlink(lockpath) |
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63 except OSError as e: |
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64 if e.errno != errno.ENOENT: |
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65 raise |
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66 if parentfn: |
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67 return parentfn(pid) |
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68 else: |
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69 return |
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70 |
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71 if initfn: |
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72 initfn() |
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73 |
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74 if not opts['daemon']: |
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75 writepid(util.getpid()) |
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76 |
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77 if opts['daemon_postexec']: |
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78 try: |
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79 os.setsid() |
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80 except AttributeError: |
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81 pass |
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82 for inst in opts['daemon_postexec']: |
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83 if inst.startswith('unlink:'): |
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84 lockpath = inst[7:] |
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85 os.unlink(lockpath) |
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86 elif inst.startswith('chdir:'): |
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87 os.chdir(inst[6:]) |
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88 elif inst != 'none': |
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89 raise error.Abort(_('invalid value for --daemon-postexec: %s') |
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90 % inst) |
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91 util.hidewindow() |
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92 util.stdout.flush() |
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93 util.stderr.flush() |
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94 |
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95 nullfd = os.open(os.devnull, os.O_RDWR) |
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96 logfilefd = nullfd |
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97 if logfile: |
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98 logfilefd = os.open(logfile, os.O_RDWR | os.O_CREAT | os.O_APPEND) |
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99 os.dup2(nullfd, 0) |
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100 os.dup2(logfilefd, 1) |
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101 os.dup2(logfilefd, 2) |
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102 if nullfd not in (0, 1, 2): |
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103 os.close(nullfd) |
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104 if logfile and logfilefd not in (0, 1, 2): |
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105 os.close(logfilefd) |
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106 |
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107 if runfn: |
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108 return runfn() |
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109 |
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110 _cmdservicemap = { |
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111 'pipe': commandserver.pipeservice, |
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112 'unix': commandserver.unixforkingservice, |
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113 } |
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114 |
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115 def createcmdservice(ui, repo, opts): |
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Yuya Nishihara <yuya@tcha.org>
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116 mode = opts['cmdserver'] |
dd539e2d89aa
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Yuya Nishihara <yuya@tcha.org>
parents:
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117 try: |
dd539e2d89aa
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Yuya Nishihara <yuya@tcha.org>
parents:
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118 return _cmdservicemap[mode](ui, repo, opts) |
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Yuya Nishihara <yuya@tcha.org>
parents:
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119 except KeyError: |
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Yuya Nishihara <yuya@tcha.org>
parents:
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120 raise error.Abort(_('unknown mode %s') % mode) |