/[meteor]/googlecode.com/svn/trunk/meteord
This is repository of my old source code which isn't updated any more. Go to git.rot13.org for current projects!
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Contents of /googlecode.com/svn/trunk/meteord

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Revision 47 - (show annotations)
Mon Feb 4 21:06:42 2008 UTC (11 years, 5 months ago) by knops.gerd
File size: 7731 byte(s)
• syslog change: If `SyslogFacility` is set to `none`, meteord will not put itself into the background and print all syslog messages with a priority higher than `debug` to standard output. The output will be prefixed with a timestamp (unix time in seconds) and a tab character.

• New syslog messges: joinchannel, leavechannel, document


1 #!/usr/bin/perl -w
2 ###############################################################################
3 # Meteor
4 # An HTTP server for the 2.0 web
5 # Copyright (c) 2006 contributing authors
6 #
7 # The Meteor daemon
8 #
9 # Main program should call Meteor::Config::setCommandLineParameters(@ARGV),.
10 # Afterwards anybody can access $::CONF{<parameterName>}, where
11 # <parameterName> is any valid parameter (except 'Help') listed in the
12 # @DEFAULTS array below.
13 #
14 ###############################################################################
15 #
16 # This program is free software; you can redistribute it and/or modify it
17 # under the terms of the GNU General Public License as published by the Free
18 # Software Foundation; either version 2 of the License, or (at your option)
19 # any later version.
20 #
21 # This program is distributed in the hope that it will be useful, but WITHOUT
22 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
23 # FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
24 # more details.
25 #
26 # You should have received a copy of the GNU General Public License along
27 # with this program; if not, write to the Free Software Foundation, Inc.,
28 # 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
29 #
30 # For more information visit www.meteorserver.org
31 #
32 ###############################################################################
33
34 ###############################################################################
35 # meterod version
36 ################################################################################
37
38 $::VERSION='1.05.04';
39 $::RELEASE_DATE='not yet released';
40
41 ###############################################################################
42 # Configuration
43 ###############################################################################
44
45 use strict;
46
47 use Meteor::Syslog;
48
49 use Meteor::Socket;
50 use Meteor::Connection;
51 use Meteor::Controller;
52 use Meteor::Subscriber;
53 use Meteor::Channel;
54 use Meteor::Document;
55 use Meteor::Config;
56
57 $::CRLF="\r\n"; # Line separator to be used throughout all modules
58
59 our $CONTROL_QUEUE_SIZE=5;
60 our $SUBSCRIBER_QUEUE_SIZE=20;
61
62 our $MAIN_LOOP_TIMEOUT=60;
63 our $AGE_CHECK_INTERVALL=60;
64
65 our $MAX_EXIT_DELAY=120;
66
67 ###############################################################################
68 # Main
69 ###############################################################################
70
71 #
72 # Record startup time
73 #
74 $::STARTUP_TIME=time;
75 $::STARTUP_TIME+=0; # avoid warning
76
77 #
78 # Program name
79 #
80 $::PGM=$0;
81 $::PGM=~s/^.*\///;
82
83 #
84 # Handle command line options and config file
85 #
86 Meteor::Config->setCommandLineParameters(@ARGV);
87
88 #
89 # Do something about warn and die
90 #
91 unless($::CONF{'Debug'})
92 {
93 $SIG{'__WARN__'}=\&Meteor::Syslog::myWarn;
94 $SIG{'__DIE__'}=\&Meteor::Syslog::myDie;
95 }
96
97 &::syslog('info',"$::PGM launched!");
98
99 #
100 # Daemonize
101 #
102 {
103 $0="$::PGM daemon";
104
105 my $facility=$::CONF{'SyslogFacility'} || $Meteor::Syslog::DEFAULT_FACILITY;
106
107 unless($::CONF{'Debug'} || $facility eq 'none')
108 {
109 # close standard file descriptors
110 close(STDIN);
111 close(STDOUT);
112 close(STDERR);
113 chdir("/");
114 umask(0);
115 # fork and exit parent
116 exit if fork;
117 setpgrp(0, $$) if defined $SIG{TTOU};
118 $SIG{TTOU}='ignore' if defined $SIG{TTOU};
119
120 # Avoid 'stdin reopened for output' warning with newer perls
121 open(NULL,'/dev/null');
122 <NULL> if(0);
123
124 open(OUT,">/var/run/$::PGM.pid");
125 print OUT "$$\n";
126 close(OUT);
127 }
128 else
129 {
130 &::syslog('info',"PID\t%s",$$);
131 }
132 }
133
134 #
135 # Signal handlers
136 #
137 $::HUP=$::TERM=$::USR1=$::USR2=0;
138 $SIG{'HUP'}=sub{$::HUP=1};
139 $SIG{'TERM'}=sub{$::TERM=1};
140 $SIG{'USR1'}=sub{$::USR1=1};
141 $SIG{'USR2'}=sub{$::USR2=1};
142
143 #
144 # Run server
145 #
146 my $con_counter=0;
147 my $con;
148
149 my $controlServer=Meteor::Socket->newServer(
150 $::CONF{'ControllerPort'},
151 $CONTROL_QUEUE_SIZE,
152 $::CONF{'ControllerIP'}
153 );
154 my $controlServerFN=$controlServer->fileno();
155
156 my $subscriberServer=Meteor::Socket->newServer(
157 $::CONF{'SubscriberPort'},
158 $SUBSCRIBER_QUEUE_SIZE,
159 $::CONF{'SubscriberIP'}
160 );
161 my $subscriberServerFN=$subscriberServer->fileno();
162
163 my $serverVector='';
164 vec($serverVector,$controlServerFN,1)=1;
165 vec($serverVector,$subscriberServerFN,1)=1;
166
167 my $lastAgeCheck=time;
168
169 my $nextPing=undef;
170 if(exists($::CONF{'PingInterval'}) && $::CONF{'PingInterval'}>2)
171 {
172 $nextPing=$::CONF{'PingInterval'}+$lastAgeCheck;
173 }
174
175 while(!$::TERM)
176 {
177 eval
178 {
179 while(!$::TERM)
180 {
181 my $rVec=$serverVector;
182 my $wVec='';
183 my $eVec='';
184
185 my $rout;
186 my $wout;
187 my $eout;
188
189 Meteor::Connection->addAllHandleBits(\$rVec,\$wVec,\$eVec);
190
191 my $timeout=$MAIN_LOOP_TIMEOUT;
192 if(defined($nextPing))
193 {
194 $timeout=$nextPing-time;
195 }
196
197 my $result=0;
198 if($timeout>0)
199 {
200 $result=&Meteor::Socket::sselect($rout=$rVec,$wout=$wVec,$eout=$eVec,$timeout);
201 }
202
203 if($result>0)
204 {
205 if(vec($rout,$controlServerFN,1))
206 {
207 Meteor::Controller->newFromServer($controlServer);
208 }
209 if(vec($rout,$subscriberServerFN,1))
210 {
211 Meteor::Subscriber->newFromServer($subscriberServer);
212 }
213
214 Meteor::Connection->checkAllHandleBits($rout,$wout,$eout);
215 }
216 elsif($result<0)
217 {
218 &::syslog('crit',"Select failed: $!");
219 sleep(30);
220 }
221
222 if($::HUP)
223 {
224 $::HUP=0;
225
226 &::syslog('info',"Received SIGHUP, re-reading config and clearing document cache!");
227
228 Meteor::Config->readConfig();
229 Meteor::Config->updateConfig();
230
231 Meteor::Document->clearDocuments()
232 }
233
234 if($::USR1)
235 {
236 $::USR1=0;
237
238 &::syslog('info',"Received SIGUSR1, clearing channel buffers!");
239
240 Meteor::Channel->clearAllBuffers();
241 }
242
243 if($::USR2)
244 {
245 $::USR2=0;
246
247 &::syslog('info',"Received SIGUSR2, clearing document cache!");
248
249 Meteor::Document->clearDocuments()
250 }
251
252 my $t=time;
253 if($t>$lastAgeCheck+$AGE_CHECK_INTERVALL)
254 {
255 my $minTimeStap=time-$::CONF{'MaxMessageAge'};
256 Meteor::Channel->trimMessageStoresByTimestamp($minTimeStap);
257 $lastAgeCheck=time;
258 $t=$lastAgeCheck;
259
260 Meteor::Subscriber->checkPersistentConnectionsForMaxTime();
261 }
262
263 if(defined($nextPing) && $nextPing<=$t)
264 {
265 $nextPing=undef;
266
267 Meteor::Subscriber->pingPersistentConnections();
268
269 if(exists($::CONF{'MaxMessageAge'}) && $::CONF{'MaxMessageAge'}>2)
270 {
271 $nextPing=$::CONF{'PingInterval'}+time;
272 }
273 }
274 }
275 };
276 unless($::TERM)
277 {
278 &::syslog('alert',"$::PGM loop died (will restart in 2 seconds): $@");
279 sleep(2);
280 }
281 }
282
283 #
284 # Proper shutdown
285 #
286 if($::TERM)
287 {
288 &::syslog('info',"Received SIGTERM, begin shutdown!");
289
290 $subscriberServer->close();
291 $controlServer->close();
292
293 unlink("/var/run/$::PGM.pid") unless($::CONF{'Debug'});
294
295 Meteor::Connection->closeAllConnections();
296
297 my $timoutAt=time+$MAX_EXIT_DELAY;
298
299 while(Meteor::Connection->connectionCount() && time<$timoutAt)
300 {
301 my $rVec='';
302 my $wVec='';
303 my $eVec='';
304
305 my $rout;
306 my $wout;
307 my $eout;
308
309 Meteor::Connection->addAllHandleBits(\$rVec,\$wVec,\$eVec);
310
311 my $result=&Meteor::Socket::sselect($rout=$rVec,$wout=$wVec,$eout=$eVec,$timoutAt-time);
312
313 if($result>0)
314 {
315 Meteor::Connection->checkAllHandleBits($rout,$wout,$eout);
316 }
317 }
318
319 if(my $cnt=Meteor::Connection->connectionCount())
320 {
321 &::syslog('info',"$cnt client(s) unresponsive, will shutdown anyway");
322
323 exit(1);
324 }
325
326 &::syslog('info',"shutdown succeeded");
327
328 exit(0);
329 }
330
331 &::syslog('emerg',"$::PGM loop exited");
332
333 1;
334 ############################################################################EOF

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