118 lines
4.0 KiB
Perl
Executable File
118 lines
4.0 KiB
Perl
Executable File
#!/usr/bin/perl -wT
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#
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# ==========================================================================
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#
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# Zone Minder WatchDog Script, $Date$, $Revision$
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# Copyright (C) 2003 Philip Coombes
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; either version 2
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# of the License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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#
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# ==========================================================================
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#
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# This does some basic setup for ZoneMinder to run and then periodically
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# checks the fps output of the active daemons to check they haven't
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# locked up. If they have then they are killed and restarted
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#
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# ==========================================================================
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#
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# These are the elements you need to edit to suit your installation
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#
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# ==========================================================================
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use constant ZM_PATH_BIN => "<from zmconfig>";
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use constant ZM_PATH_LOGS => "<from zmconfig>";
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use constant ZM_DB_SERVER => "<from zmconfig>";
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use constant ZM_DB_NAME => "<from zmconfig>";
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use constant ZM_DB_USERA => "<from zmconfig>";
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use constant ZM_DB_PASSA => "<from zmconfig>";
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use constant ZM_WATCH_CHECK_INTERVAL => <from zmconfig>;
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use constant ZM_WATCH_MAX_DELAY => <from zmconfig>;
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use constant WATCH_LOG_FILE => ZM_PATH_LOGS.'/zmwatch.log';
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use constant START_DELAY => 30; # To give everything else time to start
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use constant VERBOSE => 0; # Whether to output more verbose debug
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# ==========================================================================
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#
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# Don't change anything below here
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#
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# ==========================================================================
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use strict;
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use POSIX;
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use DBI;
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use Data::Dumper;
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$| = 1;
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$ENV{PATH} = '/bin:/usr/bin';
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$ENV{SHELL} = '/bin/sh' if exists $ENV{SHELL};
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delete @ENV{qw(IFS CDPATH ENV BASH_ENV)};
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sub Usage
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{
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print( "
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Usage: zmwatch.pl
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");
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exit( -1 );
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}
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open( LOG, '>>'.WATCH_LOG_FILE ) or die( "Can't open log file: $!" );
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open( STDOUT, ">&LOG" ) || die( "Can't dup stdout: $!" );
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select( STDOUT ); $| = 1;
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open( STDERR, ">&LOG" ) || die( "Can't dup stderr: $!" );
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select( STDERR ); $| = 1;
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select( LOG ); $| = 1;
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print( "Watchdog starting at ".strftime( '%y/%m/%d %H:%M:%S', localtime() )."\n" );
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print( "Watchdog pausing for ".START_DELAY." seconds\n" );
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sleep( START_DELAY );
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my $dbh = DBI->connect( "DBI:mysql:database=".ZM_DB_NAME.";host=".ZM_DB_SERVER, ZM_DB_USERA, ZM_DB_PASSA );
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my $sql = "select * from Monitors";
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my $sth = $dbh->prepare_cached( $sql ) or die( "Can't prepare '$sql': ".$dbh->errstr() );
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while( 1 )
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{
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my $now = time();
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my $res = $sth->execute() or die( "Can't execute: ".$sth->errstr() );
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while( my $monitor = $sth->fetchrow_hashref() )
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{
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if ( $monitor->{Function} ne 'None' )
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{
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# Check we have got an image recently
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my $command = ZM_PATH_BIN."/zmu -m ".$monitor->{Id}." -t";
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print( "Getting last image time for monitor $monitor->{Id} ('$command')\n" ) if ( VERBOSE );
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my $image_time = qx( $command );
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chomp($image_time);
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my $image_delay = $now-$image_time;
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print( "Monitor $monitor->{Id} last captured $image_delay seconds ago\n" ) if ( VERBOSE );
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if ( $image_delay <= ZM_WATCH_MAX_DELAY )
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{
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# Yes, so continue
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next;
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}
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# If we are here then something bad has happened
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$command = ZM_PATH_BIN."/zmdc.pl restart zmc -d ".$monitor->{Device};
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print( "Restarting capture daemon ('$command')\n" );
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print( qx( $command ) );
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}
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}
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sleep( ZM_WATCH_CHECK_INTERVAL );
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}
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print( "Watchdog exiting at ".strftime( '%y/%m/%d %H:%M:%S', localtime() )."\n" );
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exit();
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