/[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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Annotation of /googlecode.com/svn/trunk/meteord

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Revision 5 - (hide annotations)
Mon Nov 20 18:05:33 2006 UTC (13 years ago) by andrew.betts
File size: 7046 byte(s)
Licence block correction
1 andrew.betts 3 #!/usr/bin/perl -w
2     ###############################################################################
3 andrew.betts 4 # Meteor
4     # An HTTP server for the 2.0 web
5     # Copyright (c) 2006 contributing authors
6 andrew.betts 3 #
7 andrew.betts 4 # The Meteor daemon
8 andrew.betts 3 #
9     ###############################################################################
10     #
11 andrew.betts 4 # This program is free software; you can redistribute it and/or modify it
12     # under the terms of the GNU General Public License as published by the Free
13     # Software Foundation; either version 2 of the License, or (at your option)
14     # any later version.
15 andrew.betts 3 #
16 andrew.betts 4 # This program is distributed in the hope that it will be useful, but WITHOUT
17     # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
18     # FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
19     # more details.
20 andrew.betts 3 #
21 andrew.betts 4 # You should have received a copy of the GNU General Public License along
22     # with this program; if not, write to the Free Software Foundation, Inc.,
23     # 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24 andrew.betts 3 #
25 andrew.betts 4 # For more information visit www.meteorserver.org
26 andrew.betts 3 #
27     ###############################################################################
28 andrew.betts 4
29    
30     ###############################################################################
31 andrew.betts 3 # Configuration
32     ###############################################################################
33    
34     use strict;
35    
36     use Meteor::Syslog;
37    
38     use Meteor::Socket;
39     use Meteor::Connection;
40     use Meteor::Controller;
41     use Meteor::Subscriber;
42     use Meteor::Channel;
43     use Meteor::Document;
44     use Meteor::Config;
45    
46     $::CRLF="\r\n"; # Line separator to be used throughout all modules
47    
48     our $CONTROL_QUEUE_SIZE=5;
49     our $SUBSCRIBER_QUEUE_SIZE=20;
50    
51     our $MAIN_LOOP_TIMEOUT=60;
52     our $AGE_CHECK_INTERVALL=60;
53    
54     our $MAX_EXIT_DELAY=120;
55    
56     ###############################################################################
57     # Main
58     ###############################################################################
59    
60     #
61     # Program name
62     #
63     $::PGM=$0;
64     $::PGM=~s/^.*\///;
65    
66     #
67     # Handle command line options and config file
68     #
69     Meteor::Config->setCommandLineParameters(@ARGV);
70    
71     #
72     # Do something about warn and die
73     #
74     unless($::CONF{'Debug'})
75     {
76     $SIG{'__WARN__'}=\&Meteor::Syslog::myWarn;
77     $SIG{'__DIE__'}=\&Meteor::Syslog::myDie;
78     }
79    
80     &::syslog('info',"$::PGM launched!");
81    
82     #
83     # Daemonize
84     #
85     {
86     $0="$::PGM daemon";
87    
88     unless($::CONF{'Debug'})
89     {
90     # close standard file descriptors
91     close(STDIN);
92     close(STDOUT);
93     close(STDERR);
94     chdir("/");
95     umask(0);
96     # fork and exit parent
97     exit if fork;
98     setpgrp(0, $$) if defined $SIG{TTOU};
99     $SIG{TTOU}='ignore' if defined $SIG{TTOU};
100    
101     # Avoid 'stdin reopened for output' warning with newer perls
102     open(NULL,'/dev/null');
103     <NULL> if(0);
104    
105     open(OUT,">/var/run/$::PGM.pid");
106     print OUT "$$\n";
107     close(OUT);
108     }
109     else
110     {
111     print "$::PGM PID: $$\n";
112     }
113     }
114    
115     #
116     # Signal handlers
117     #
118     $::HUP=$::TERM=$::USR1=$::USR2=0;
119     $SIG{'HUP'}=sub{$::HUP=1};
120     $SIG{'TERM'}=sub{$::TERM=1};
121     $SIG{'USR1'}=sub{$::USR1=1};
122     $SIG{'USR2'}=sub{$::USR2=1};
123    
124     #
125     # Run server
126     #
127     my $con_counter=0;
128     my $con;
129    
130     my $controlServer=Meteor::Socket->newServer(
131     $::CONF{'ControllerPort'},
132     $CONTROL_QUEUE_SIZE,
133     $::CONF{'ControllerIP'}
134     );
135     my $controlServerFN=$controlServer->fileno();
136    
137     my $subscriberServer=Meteor::Socket->newServer(
138     $::CONF{'SubscriberPort'},
139     $SUBSCRIBER_QUEUE_SIZE,
140     $::CONF{'SubscriberIP'}
141     );
142     my $subscriberServerFN=$subscriberServer->fileno();
143    
144     my $serverVector='';
145     vec($serverVector,$controlServerFN,1)=1;
146     vec($serverVector,$subscriberServerFN,1)=1;
147    
148     my $lastAgeCheck=time;
149    
150     my $nextPing=undef;
151     if(exists($::CONF{'PingInterval'}) && $::CONF{'PingInterval'}>2)
152     {
153     $nextPing=$::CONF{'PingInterval'}+$lastAgeCheck;
154     }
155    
156     while(!$::TERM)
157     {
158     eval
159     {
160     while(!$::TERM)
161     {
162     my $rVec=$serverVector;
163     my $wVec='';
164     my $eVec='';
165    
166     my $rout;
167     my $wout;
168     my $eout;
169    
170     Meteor::Connection->addAllHandleBits(\$rVec,\$wVec,\$eVec);
171    
172     my $timeout=$MAIN_LOOP_TIMEOUT;
173     if(defined($nextPing))
174     {
175     $timeout=$nextPing-time;
176     }
177    
178     my $result=0;
179     if($timeout>0)
180     {
181     $result=&Meteor::Socket::sselect($rout=$rVec,$wout=$wVec,$eout=$eVec,$timeout);
182     }
183    
184     if($result>0)
185     {
186     if(vec($rout,$controlServerFN,1))
187     {
188     Meteor::Controller->newFromServer($controlServer);
189     }
190     if(vec($rout,$subscriberServerFN,1))
191     {
192     Meteor::Subscriber->newFromServer($subscriberServer);
193     }
194    
195     Meteor::Connection->checkAllHandleBits($rout,$wout,$eout);
196     }
197     elsif($result<0)
198     {
199     &::syslog('crit',"Select failed: $!");
200     sleep(30);
201     }
202    
203     if($::HUP)
204     {
205     $::HUP=0;
206    
207     &::syslog('info',"Received SIGHUP, re-reading config and clearing document cache!");
208    
209     Meteor::Config->readConfig();
210     Meteor::Config->updateConfig();
211    
212     Meteor::Document->clearDocuments()
213     }
214    
215     if($::USR1)
216     {
217     $::USR1=0;
218    
219     &::syslog('info',"Received SIGUSR1, clearing channel buffers!");
220    
221     Meteor::Channel->clearAllBuffers();
222     }
223    
224     if($::USR2)
225     {
226     $::USR2=0;
227    
228     &::syslog('info',"Received SIGUSR2, clearing document cache!");
229    
230     Meteor::Document->clearDocuments()
231     }
232    
233     my $t=time;
234     if($t>$lastAgeCheck+$AGE_CHECK_INTERVALL)
235     {
236     my $minTimeStap=time-$::CONF{'MaxMessageAge'};
237     Meteor::Channel->trimMessageStoresByTimestamp($minTimeStap);
238     $lastAgeCheck=time;
239     $t=$lastAgeCheck;
240    
241     Meteor::Subscriber->checkPersistentConnectionsForMaxTime();
242     }
243    
244     if(defined($nextPing) && $nextPing<=$t)
245     {
246     $nextPing=undef;
247    
248     Meteor::Subscriber->pingPersistentConnections();
249    
250     if(exists($::CONF{'MaxMessageAge'}) && $::CONF{'MaxMessageAge'}>2)
251     {
252     $nextPing=$::CONF{'PingInterval'}+time;
253     }
254     }
255     }
256     };
257     unless($::TERM)
258     {
259     &::syslog('alert',"$::PGM loop died (will restart in 2 seconds): $@");
260     sleep(2);
261     }
262     }
263    
264     #
265     # Proper shutdown
266     #
267     if($::TERM)
268     {
269     &::syslog('info',"Received SIGTERM, begin shutdown!");
270    
271     $subscriberServer->close();
272     $controlServer->close();
273    
274     unlink("/var/run/$::PGM.pid") unless($::CONF{'Debug'});
275    
276     Meteor::Connection->closeAllConnections();
277    
278     my $timoutAt=time+$MAX_EXIT_DELAY;
279    
280     while(Meteor::Connection->connectionCount() && time<$timoutAt)
281     {
282     my $rVec='';
283     my $wVec='';
284     my $eVec='';
285    
286     my $rout;
287     my $wout;
288     my $eout;
289    
290     Meteor::Connection->addAllHandleBits(\$rVec,\$wVec,\$eVec);
291    
292     my $result=&Meteor::Socket::sselect($rout=$rVec,$wout=$wVec,$eout=$eVec,$timoutAt-time);
293    
294     if($result>0)
295     {
296     Meteor::Connection->checkAllHandleBits($rout,$wout,$eout);
297     }
298     }
299    
300     if(my $cnt=Meteor::Connection->connectionCount())
301     {
302     &::syslog('info',"$cnt client(s) unresponsive, will shutdown anyway");
303    
304     exit(1);
305     }
306    
307     &::syslog('info',"shutdown succeeded");
308    
309     exit(0);
310     }
311    
312     &::syslog('emerg',"$::PGM loop exited");
313    
314     1;
315     ############################################################################EOF

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