/[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 46 - (show annotations)
Mon Feb 4 19:24:25 2008 UTC (11 years, 5 months ago) by knops.gerd
File size: 7618 byte(s)
• The ADDMESSAGE response now follows the `OK` with a tab character and the message ID for the newly added message

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='1.05.03';
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 unless($::CONF{'Debug'})
106 {
107 # close standard file descriptors
108 close(STDIN);
109 close(STDOUT);
110 close(STDERR);
111 chdir("/");
112 umask(0);
113 # fork and exit parent
114 exit if fork;
115 setpgrp(0, $$) if defined $SIG{TTOU};
116 $SIG{TTOU}='ignore' if defined $SIG{TTOU};
117
118 # Avoid 'stdin reopened for output' warning with newer perls
119 open(NULL,'/dev/null');
120 <NULL> if(0);
121
122 open(OUT,">/var/run/$::PGM.pid");
123 print OUT "$$\n";
124 close(OUT);
125 }
126 else
127 {
128 print "$::PGM PID: $$\n";
129 }
130 }
131
132 #
133 # Signal handlers
134 #
135 $::HUP=$::TERM=$::USR1=$::USR2=0;
136 $SIG{'HUP'}=sub{$::HUP=1};
137 $SIG{'TERM'}=sub{$::TERM=1};
138 $SIG{'USR1'}=sub{$::USR1=1};
139 $SIG{'USR2'}=sub{$::USR2=1};
140
141 #
142 # Run server
143 #
144 my $con_counter=0;
145 my $con;
146
147 my $controlServer=Meteor::Socket->newServer(
148 $::CONF{'ControllerPort'},
149 $CONTROL_QUEUE_SIZE,
150 $::CONF{'ControllerIP'}
151 );
152 my $controlServerFN=$controlServer->fileno();
153
154 my $subscriberServer=Meteor::Socket->newServer(
155 $::CONF{'SubscriberPort'},
156 $SUBSCRIBER_QUEUE_SIZE,
157 $::CONF{'SubscriberIP'}
158 );
159 my $subscriberServerFN=$subscriberServer->fileno();
160
161 my $serverVector='';
162 vec($serverVector,$controlServerFN,1)=1;
163 vec($serverVector,$subscriberServerFN,1)=1;
164
165 my $lastAgeCheck=time;
166
167 my $nextPing=undef;
168 if(exists($::CONF{'PingInterval'}) && $::CONF{'PingInterval'}>2)
169 {
170 $nextPing=$::CONF{'PingInterval'}+$lastAgeCheck;
171 }
172
173 while(!$::TERM)
174 {
175 eval
176 {
177 while(!$::TERM)
178 {
179 my $rVec=$serverVector;
180 my $wVec='';
181 my $eVec='';
182
183 my $rout;
184 my $wout;
185 my $eout;
186
187 Meteor::Connection->addAllHandleBits(\$rVec,\$wVec,\$eVec);
188
189 my $timeout=$MAIN_LOOP_TIMEOUT;
190 if(defined($nextPing))
191 {
192 $timeout=$nextPing-time;
193 }
194
195 my $result=0;
196 if($timeout>0)
197 {
198 $result=&Meteor::Socket::sselect($rout=$rVec,$wout=$wVec,$eout=$eVec,$timeout);
199 }
200
201 if($result>0)
202 {
203 if(vec($rout,$controlServerFN,1))
204 {
205 Meteor::Controller->newFromServer($controlServer);
206 }
207 if(vec($rout,$subscriberServerFN,1))
208 {
209 Meteor::Subscriber->newFromServer($subscriberServer);
210 }
211
212 Meteor::Connection->checkAllHandleBits($rout,$wout,$eout);
213 }
214 elsif($result<0)
215 {
216 &::syslog('crit',"Select failed: $!");
217 sleep(30);
218 }
219
220 if($::HUP)
221 {
222 $::HUP=0;
223
224 &::syslog('info',"Received SIGHUP, re-reading config and clearing document cache!");
225
226 Meteor::Config->readConfig();
227 Meteor::Config->updateConfig();
228
229 Meteor::Document->clearDocuments()
230 }
231
232 if($::USR1)
233 {
234 $::USR1=0;
235
236 &::syslog('info',"Received SIGUSR1, clearing channel buffers!");
237
238 Meteor::Channel->clearAllBuffers();
239 }
240
241 if($::USR2)
242 {
243 $::USR2=0;
244
245 &::syslog('info',"Received SIGUSR2, clearing document cache!");
246
247 Meteor::Document->clearDocuments()
248 }
249
250 my $t=time;
251 if($t>$lastAgeCheck+$AGE_CHECK_INTERVALL)
252 {
253 my $minTimeStap=time-$::CONF{'MaxMessageAge'};
254 Meteor::Channel->trimMessageStoresByTimestamp($minTimeStap);
255 $lastAgeCheck=time;
256 $t=$lastAgeCheck;
257
258 Meteor::Subscriber->checkPersistentConnectionsForMaxTime();
259 }
260
261 if(defined($nextPing) && $nextPing<=$t)
262 {
263 $nextPing=undef;
264
265 Meteor::Subscriber->pingPersistentConnections();
266
267 if(exists($::CONF{'MaxMessageAge'}) && $::CONF{'MaxMessageAge'}>2)
268 {
269 $nextPing=$::CONF{'PingInterval'}+time;
270 }
271 }
272 }
273 };
274 unless($::TERM)
275 {
276 &::syslog('alert',"$::PGM loop died (will restart in 2 seconds): $@");
277 sleep(2);
278 }
279 }
280
281 #
282 # Proper shutdown
283 #
284 if($::TERM)
285 {
286 &::syslog('info',"Received SIGTERM, begin shutdown!");
287
288 $subscriberServer->close();
289 $controlServer->close();
290
291 unlink("/var/run/$::PGM.pid") unless($::CONF{'Debug'});
292
293 Meteor::Connection->closeAllConnections();
294
295 my $timoutAt=time+$MAX_EXIT_DELAY;
296
297 while(Meteor::Connection->connectionCount() && time<$timoutAt)
298 {
299 my $rVec='';
300 my $wVec='';
301 my $eVec='';
302
303 my $rout;
304 my $wout;
305 my $eout;
306
307 Meteor::Connection->addAllHandleBits(\$rVec,\$wVec,\$eVec);
308
309 my $result=&Meteor::Socket::sselect($rout=$rVec,$wout=$wVec,$eout=$eVec,$timoutAt-time);
310
311 if($result>0)
312 {
313 Meteor::Connection->checkAllHandleBits($rout,$wout,$eout);
314 }
315 }
316
317 if(my $cnt=Meteor::Connection->connectionCount())
318 {
319 &::syslog('info',"$cnt client(s) unresponsive, will shutdown anyway");
320
321 exit(1);
322 }
323
324 &::syslog('info',"shutdown succeeded");
325
326 exit(0);
327 }
328
329 &::syslog('emerg',"$::PGM loop exited");
330
331 1;
332 ############################################################################EOF

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