/[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 57 - (show annotations)
Sun Mar 2 22:18:59 2008 UTC (11 years, 9 months ago) by andrew.betts
File size: 8867 byte(s)
Updated some config defaults
Release


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='1.06';
39 $::RELEASE_DATE='2008-03-02';
40
41 ###############################################################################
42 # Configuration
43 ###############################################################################
44
45 use strict;
46
47 use Socket;
48
49 use Meteor::Syslog;
50
51 use Meteor::Socket;
52 use Meteor::Connection;
53 use Meteor::Controller;
54 use Meteor::Subscriber;
55 use Meteor::Channel;
56 use Meteor::Document;
57 use Meteor::Config;
58
59 $::CRLF="\r\n"; # Line separator to be used throughout all modules
60
61 our $CONTROL_QUEUE_SIZE=5;
62 our $SUBSCRIBER_QUEUE_SIZE=20;
63
64 our $MAIN_LOOP_TIMEOUT=60;
65 our $AGE_CHECK_INTERVALL=60;
66
67 our $MAX_EXIT_DELAY=120;
68
69 our $UDP_MAX_MESSAGE_SIZE=8192;
70
71 ###############################################################################
72 # Main
73 ###############################################################################
74
75 #
76 # Record startup time
77 #
78 $::STARTUP_TIME=time;
79 $::STARTUP_TIME+=0; # avoid warning
80
81 #
82 # Program name
83 #
84 $::PGM=$0;
85 $::PGM=~s/^.*\///;
86
87 #
88 # Handle command line options and config file
89 #
90 Meteor::Config->setCommandLineParameters(@ARGV);
91
92 #
93 # Do something about warn and die
94 #
95 unless($::CONF{'Debug'})
96 {
97 $SIG{'__WARN__'}=\&Meteor::Syslog::myWarn;
98 $SIG{'__DIE__'}=\&Meteor::Syslog::myDie;
99 }
100
101 &::syslog('info',"$::PGM launched!");
102
103 #
104 # Daemonize
105 #
106 {
107 $0="$::PGM daemon";
108
109 my $facility=$::CONF{'SyslogFacility'} || $Meteor::Syslog::DEFAULT_FACILITY;
110
111 unless($::CONF{'Debug'} || $facility eq 'none')
112 {
113 # close standard file descriptors
114 close(STDIN);
115 close(STDOUT);
116 close(STDERR);
117 chdir("/");
118 umask(0);
119 # fork and exit parent
120 exit if fork;
121 setpgrp(0, $$) if defined $SIG{TTOU};
122 $SIG{TTOU}='ignore' if defined $SIG{TTOU};
123
124 # Avoid 'stdin reopened for output' warning with newer perls
125 open(NULL,'/dev/null');
126 <NULL> if(0);
127
128 open(OUT,">/var/run/$::PGM.pid");
129 print OUT "$$\n";
130 close(OUT);
131 }
132 else
133 {
134 &::syslog('info',"PID\t%s",$$);
135 }
136 }
137
138 #
139 # Signal handlers
140 #
141 $::HUP=$::TERM=$::USR1=$::USR2=0;
142 $SIG{'HUP'}=sub{$::HUP=1};
143 $SIG{'TERM'}=sub{$::TERM=1};
144 $SIG{'USR1'}=sub{$::USR1=1};
145 $SIG{'USR2'}=sub{$::USR2=1};
146
147 #
148 # Run server
149 #
150 my $con_counter=0;
151 my $con;
152
153 my $controlServer=Meteor::Socket->newServer(
154 $::CONF{'ControllerPort'},
155 $CONTROL_QUEUE_SIZE,
156 $::CONF{'ControllerIP'}
157 );
158 my $controlServerFN=$controlServer->fileno();
159
160 my $subscriberServer=Meteor::Socket->newServer(
161 $::CONF{'SubscriberPort'},
162 $SUBSCRIBER_QUEUE_SIZE,
163 $::CONF{'SubscriberIP'}
164 );
165 my $subscriberServerFN=$subscriberServer->fileno();
166
167 my $udpServer=undef;
168 my $udpPort=$::CONF{'UDPPort'};
169 my $udpServerFN=undef;
170 if($udpPort && $udpPort>0)
171 {
172 $udpServer=Meteor::Socket->newUDPServer(
173 $udpPort,
174 $::CONF{'UDPIP'}
175 );
176 $udpServerFN=$udpServer->fileno();
177 }
178
179 my $serverVector='';
180 vec($serverVector,$controlServerFN,1)=1;
181 vec($serverVector,$subscriberServerFN,1)=1;
182 vec($serverVector,$udpServerFN,1)=1 if(defined($udpServerFN));
183
184 my $lastAgeCheck=time;
185
186 my $nextPing=undef;
187 if(exists($::CONF{'PingInterval'}) && $::CONF{'PingInterval'}>2)
188 {
189 $nextPing=$::CONF{'PingInterval'}+$lastAgeCheck;
190 }
191
192 while(!$::TERM)
193 {
194 eval
195 {
196 while(!$::TERM)
197 {
198 my $rVec=$serverVector;
199 my $wVec='';
200 my $eVec='';
201
202 my $rout;
203 my $wout;
204 my $eout;
205
206 Meteor::Connection->addAllHandleBits(\$rVec,\$wVec,\$eVec);
207
208 my $timeout=$MAIN_LOOP_TIMEOUT;
209 if(defined($nextPing))
210 {
211 $timeout=$nextPing-time;
212 }
213
214 my $result=0;
215 if($timeout>0)
216 {
217 $result=&Meteor::Socket::sselect($rout=$rVec,$wout=$wVec,$eout=$eVec,$timeout);
218 }
219
220 if($result>0)
221 {
222 if(vec($rout,$controlServerFN,1))
223 {
224 Meteor::Controller->newFromServer($controlServer);
225 }
226 if(vec($rout,$subscriberServerFN,1))
227 {
228 Meteor::Subscriber->newFromServer($subscriberServer);
229 }
230 if(defined($udpServerFN) && vec($rout,$udpServerFN,1))
231 {
232 &handleUPD($udpServer);
233 }
234
235 Meteor::Connection->checkAllHandleBits($rout,$wout,$eout);
236 }
237 elsif($result<0)
238 {
239 &::syslog('crit',"Select failed: $!");
240 sleep(30);
241 }
242
243 if($::HUP)
244 {
245 $::HUP=0;
246
247 &::syslog('info',"Received SIGHUP, re-reading config and clearing document cache!");
248
249 Meteor::Config->readConfig();
250 Meteor::Config->updateConfig();
251
252 Meteor::Document->clearDocuments()
253 }
254
255 if($::USR1)
256 {
257 $::USR1=0;
258
259 &::syslog('info',"Received SIGUSR1, clearing channel buffers!");
260
261 Meteor::Channel->clearAllBuffers();
262 }
263
264 if($::USR2)
265 {
266 $::USR2=0;
267
268 &::syslog('info',"Received SIGUSR2, clearing document cache!");
269
270 Meteor::Document->clearDocuments()
271 }
272
273 my $t=time;
274 if($t>$lastAgeCheck+$AGE_CHECK_INTERVALL)
275 {
276 my $minTimeStap=time-$::CONF{'MaxMessageAge'};
277 Meteor::Channel->trimMessageStoresByTimestamp($minTimeStap);
278 $lastAgeCheck=time;
279 $t=$lastAgeCheck;
280
281 Meteor::Subscriber->checkPersistentConnectionsForMaxTime();
282 }
283
284 if(defined($nextPing) && $nextPing<=$t)
285 {
286 $nextPing=undef;
287
288 Meteor::Subscriber->pingPersistentConnections();
289
290 if(exists($::CONF{'MaxMessageAge'}) && $::CONF{'MaxMessageAge'}>2)
291 {
292 $nextPing=$::CONF{'PingInterval'}+time;
293 }
294 }
295 }
296 };
297 unless($::TERM)
298 {
299 &::syslog('alert',"$::PGM loop died (will restart in 2 seconds): $@");
300 sleep(2);
301 }
302 }
303
304 #
305 # Proper shutdown
306 #
307 if($::TERM)
308 {
309 &::syslog('info',"Received SIGTERM, begin shutdown!");
310
311 $subscriberServer->close();
312 $controlServer->close();
313
314 unlink("/var/run/$::PGM.pid") unless($::CONF{'Debug'});
315
316 Meteor::Connection->closeAllConnections();
317
318 my $timoutAt=time+$MAX_EXIT_DELAY;
319
320 while(Meteor::Connection->connectionCount() && time<$timoutAt)
321 {
322 my $rVec='';
323 my $wVec='';
324 my $eVec='';
325
326 my $rout;
327 my $wout;
328 my $eout;
329
330 Meteor::Connection->addAllHandleBits(\$rVec,\$wVec,\$eVec);
331
332 my $result=&Meteor::Socket::sselect($rout=$rVec,$wout=$wVec,$eout=$eVec,$timoutAt-time);
333
334 if($result>0)
335 {
336 Meteor::Connection->checkAllHandleBits($rout,$wout,$eout);
337 }
338 }
339
340 if(my $cnt=Meteor::Connection->connectionCount())
341 {
342 &::syslog('info',"$cnt client(s) unresponsive, will shutdown anyway");
343
344 exit(1);
345 }
346
347 &::syslog('info',"shutdown succeeded");
348
349 exit(0);
350 }
351
352 &::syslog('emerg',"$::PGM loop exited");
353
354 ###############################################################################
355 # Subroutines
356 ###############################################################################
357 sub handleUPD {
358 $udpServer=shift;
359
360 my $line;
361 my $hispaddr=recv($udpServer->{'handle'},$line,$::UDP_MAX_MESSAGE_SIZE,0);
362
363 &::syslog('debug',"udp message received: %s",$line);
364
365 return unless($line=~s/^(\S+)\s//);
366
367 my $cmd=$1;
368
369 if($cmd eq 'ADDMESSAGE')
370 {
371 return unless($line=~s/^(\S+)\s//);
372
373 my $channelName=$1;
374 my $channel=Meteor::Channel->channelWithName($channelName);
375 my $msg=$channel->addMessage($line);
376 my $msgID=$msg->id();
377 &::syslog('debug',"udp: new message added, ID %s",$msgID);
378 }
379 }
380
381 1;
382 ############################################################################EOF

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