122 lines
3.9 KiB
Plaintext
122 lines
3.9 KiB
Plaintext
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#!/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) 2002 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 DB_NAME => "zm";
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use constant DB_USER => "zmadmin";
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use constant DB_PASS => "zmadminzm";
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use constant CHECK_INTERVAL => 30;
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use constant COMMAND_PATH => '@prefix@/bin/';
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use constant ZM_SHM_KEY => 0x7a6d2000;
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use constant WATCH_LOG_FILE => '/tmp/zmwatch.log';
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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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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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( $ENV{PATH} ) = ( $ENV{PATH} =~ /^(.*)$/ );
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( $ENV{BASH_ENV} ) = ( $ENV{BASH_ENV} =~ /^(.*)$/ );
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my $dbh = DBI->connect( "DBI:mysql:".DB_NAME, DB_USER, DB_PASS );
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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 $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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my $device = $monitor->{Device};
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my $device_file = "/dev/video$device";
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# Check that the video device is readable
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print( "Checking '$device_file'\n" );
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if ( !-R $device_file )
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{
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my ($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size, $atime,$mtime,$ctime,$blksize,$blocks) = stat(_);
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$mode &= 07777;
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if ( !$mode & 044 )
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{
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print( "Device file '$device_file' unreadable, changing permissions\n" );
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chmod( $mode | 044, $device_file ) or die( "Can't chmod '$device_file': $!" );
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}
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}
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# Check the write index is incrementing, if is isn't for 3 consecutive
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# times we kill it and start again
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my $command = COMMAND_PATH."zmu -m ".$monitor->{Id}." -f";
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print( "Getting FPS for monitor $monitor->{Id} ('$command')\n" );
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if ( $command )
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{
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my $fps = qx( $command );
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print( "Monitor $monitor->{Id} capturing at $fps FPS\n" );
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if ( !$fps )
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{
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my $command = COMMAND_PATH."zmdc.pl restart zmc -d ".$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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}
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}
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sleep( 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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