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#!@@PERL@@
# -*- perl -*-
=head1 NAME
tomcat_threads - Plugin to monitor the number of tomcat-threads
running on the machine, and (in addition to a simple process count),
separate then into "busy" or "idle" servers.
=head1 CONFIGURATION
The following environment variables are used by this plugin:
timeout - Connection timeout
url - Override default status-url
port - HTTP port number
user - Manager username
password - Manager password
connector - Override connector to monitor
=head1 USAGE
Requirements: Needs access to
http://<user>:<password>@localhost:8080/manager/status?XML=true (or
modify the address for another host).
Tomcat 5.0 or higher.
A munin-user in $CATALINA_HOME/conf/tomcat-users.xml should be set up
for this to work.
Tip: To see if it's already set up correctly, just run this plugin
with the parameter "autoconf". If you get a "yes", everything should
work like a charm already.
tomcat-users.xml example:
<user username="munin" password="<set this>" roles="standard,manager"/>
=head1 AUTHOR
Rune Nordbøe Skillingstad <runesk@linpro.no>
=head1 LICENSE
GPLv2
=head1 MAGIC MARKERS
#%# family=manual
#%# capabilities=autoconf
=cut
use strict;
use Munin::Plugin;
my $ret = undef;
if(!eval "require LWP::UserAgent;") {
$ret = "LWP::UserAgent not found";
}
if(!eval "require XML::Simple;") {
$ret .= "XML::Simple not found";
}
my $URL = exists $ENV{'url'} ? $ENV{'url'} : "http://%s:%s\@%s:%d/manager/status?XML=true";
my $PORT = exists $ENV{'port'} ? $ENV{'port'} : exists $ENV{'ports'} ? $ENV{'ports'} : 8080;
my $HOST = exists $ENV{'host'} ? $ENV{'host'} : "127.0.0.1";
my $USER = exists $ENV{'user'} ? $ENV{'user'} : "munin";
my $PASSWORD = exists $ENV{'password'} ? $ENV{'password'} : "munin";
my $TIMEOUT = exists $ENV{'timeout'} ? $ENV{'timeout'} : 30;
my $CONNECTOR= exists $ENV{'connector'}? $ENV{'connector'}: "http-".$PORT;
my $url = sprintf $URL, $USER, $PASSWORD, $HOST, $PORT;
if(exists $ARGV[0] and $ARGV[0] eq "autoconf") {
if($ret) {
print "no ($ret)\n";
exit 0;
}
my $au = LWP::UserAgent->new(timeout => $TIMEOUT);
my $repsonse = $au->request(HTTP::Request->new('GET',$url));
if($repsonse->is_success and $repsonse->content =~ /<status>.*<\/status>/im) {
print "yes\n";
exit 0;
} else {
print "no (no tomcat status)\n";
exit 0;
}
}
if(exists $ARGV[0] and $ARGV[0] eq "config") {
print "graph_title Tomcat threads\n";
print "graph_args --base 1000 -l 0\n";
print "graph_vlabel threads\n";
print "graph_category tomcat\n";
print "graph_total total\n";
print "graph_order busy idle\n";
print "busy.label busy threads\n";
print "busy.draw AREA\n";
print "idle.label idle threads\n";
print "idle.draw STACK\n";
exit 0;
}
my $ua = LWP::UserAgent->new(timeout => $TIMEOUT);
my $xs = new XML::Simple;
my $response = $ua->request(HTTP::Request->new('GET',$url));
my %options = ( KeyAttr => { connector => 'name' }, ForceArray => 1 );
my $xml = $xs->XMLin($response->content, %options);
if($xml->{'connector'}->{$CONNECTOR}->{'threadInfo'}->[0]->{'currentThreadsBusy'} &&
$xml->{'connector'}->{$CONNECTOR}->{'threadInfo'}->[0]->{'currentThreadCount'}) {
print "busy.value " . $xml->{'connector'}->{$CONNECTOR}->{'threadInfo'}->[0]->{'currentThreadsBusy'} . "\n";
print "idle.value " .
($xml->{'connector'}->{$CONNECTOR}->{'threadInfo'}->[0]->{'currentThreadCount'} -
$xml->{'connector'}->{$CONNECTOR}->{'threadInfo'}->[0]->{'currentThreadsBusy'}) . "\n";
} else {
print "busy.value U\n";
print "idle.value U\n";
}
# vim:syntax=perl
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