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|
#!@PERL@
# Copyright (C) 2002 Stanislav Sinyagin
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
# $Id: collector.in,v 1.1 2010-12-27 00:04:03 ivan Exp $
# Stanislav Sinyagin <ssinyagin@yahoo.com>
BEGIN { require '@torrus_config_pl@'; }
use strict;
use Proc::Daemon;
use Getopt::Long;
use Torrus::Log;
use Torrus::ConfigTree;
use Torrus::Collector;
use Torrus::SiteConfig;
$| = 1;
exit(1) if not Torrus::SiteConfig::verify();
my $tree;
my $instance;
my $nodaemon;
my $runonce;
my $runalways;
my $debug;
my $verbose;
my $help_needed;
# Derive the process name from the command line
my $process_name = $0;
$process_name =~ s/^.*\/([^\/]+)$/$1/;
$process_name .= ' ' . join(' ', @ARGV);
my $ok = GetOptions ('tree=s' => \$tree,
'instance=i' => \$instance,
'nodaemon' => \$nodaemon,
'runonce' => \$runonce,
'runalways' => \$runalways,
'debug' => \$debug,
'verbose' => \$verbose,
'help' => \$help_needed);
if( not $ok or not $tree or $help_needed or scalar(@ARGV) > 0 )
{
print STDERR "Usage: $0 --tree=NAME [options...]\n",
"Options:\n",
" --tree=NAME tree name\n",
" --instance=N instance number for multiple collectors per tree\n",
" --nodaemon do not fork daemon and log to STDERR\n",
" --runonce run one time and exit. Implies --nodaemon\n",
" --runalways continue running if no collectors defined\n",
" --debug set the log level to debug\n",
" --verbose set the log level to info\n",
" --help this help message\n";
exit 1;
}
if( not Torrus::SiteConfig::mayRunCollector( $tree ) )
{
Error('Tree ' . $tree . ' is not configured to run collector');
exit 1;
}
my $nInstances = Torrus::SiteConfig::collectorInstances( $tree );
if( $nInstances > 1 and not defined( $instance ) )
{
Error('--instance option is missing');
exit 1;
}
if( not defined( $instance ) )
{
$instance = 0;
}
if( $instance >= $nInstances )
{
Error('Invalid instance number. Allowed from 0 to ' . ($nInstances-1));
exit 1;
}
if( $debug )
{
Torrus::Log::setLevel('debug');
}
elsif( $verbose )
{
Torrus::Log::setLevel('verbose');
}
my $logfile =
$Torrus::Global::logDir . '/collector.' . $tree . '_' . $instance . '.log';
my $pidfile;
my $rotateLogs = sub
{
Info('Caught SIGHUP. Reopening log file');
close( STDERR );
open( STDERR, ">>$logfile" );
$| = 1;
};
if( not $nodaemon and not $runonce )
{
my $pidfilename =
$Torrus::Global::pidDir . '/collector.' .
$tree . '_' . $instance . '.pid';
if( -r $pidfilename )
{
Error("Another collector daemon is running, pid=",
`cat $pidfilename`);
exit 1;
}
&Proc::Daemon::Init();
umask 0017; # Proc::Daemon::Init sets the mask to all-writable
$SIG{'HUP'} = $rotateLogs;
# At this point, we cannot tell anyone if "open" fails
open(STDERR, ">>$logfile");
$pidfile = $pidfilename;
if( open( PID, ">$pidfile" ) )
{
printf PID ( "%d", $$ );
close PID;
}
else
{
Error("Cannot open $pidfile for writing: $!");
}
}
Torrus::Collector::initThreads();
&Torrus::DB::setSafeSignalHandlers();
Info(sprintf("Torrus version %s", '@VERSION@'));
Info(sprintf("%s started for tree %s, instance #%d", $0, $tree, $instance));
Debug(sprintf("Process ID %d", $$));
my %options =
(
'-ProcessName' => $process_name,
'-Tree' => $tree,
'-Instance' => $instance
);
if( $runonce )
{
$options{'-RunOnce'} = 1;
}
if( $runalways )
{
$options{'-RunAlways'} = 1;
}
my $scheduler = new Torrus::CollectorScheduler( %options );
$scheduler->run();
if( not $options{'-RunOnce'} )
{
Error("Collector process exited: nothing to collect");
unlink $pidfile;
}
exit;
END
{
if( defined($pidfile) and -r $pidfile )
{
unlink $pidfile;
}
}
# Local Variables:
# mode: perl
# indent-tabs-mode: nil
# perl-indent-level: 4
# End:
|
