/usr/bin/zmwatch.pl is in zoneminder 1.29.0+dfsg-1ubuntu2.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 | #!/usr/bin/perl -wT
#
# ==========================================================================
#
# ZoneMinder WatchDog Script, $Date$, $Revision$
# Copyright (C) 2001-2008 Philip Coombes
#
# 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.
#
# ==========================================================================
=head1 NAME
zmwatch.pl - ZoneMinder WatchDog Script
=head1 SYNOPSIS
zmwatch.pl
=head1 DESCRIPTION
This does some basic setup for ZoneMinder to run and then periodically
checks the fps output of the active daemons to check they haven't
locked up. If they have then they are killed and restarted
=cut
use strict;
use bytes;
# ==========================================================================
#
# These are the elements you can edit to suit your installation
#
# ==========================================================================
use constant START_DELAY => 30; # To give everything else time to start
# ==========================================================================
#
# Don't change anything below here
#
# ==========================================================================
# Include from system perl paths only
use ZoneMinder;
use POSIX;
use DBI;
use autouse 'Data::Dumper'=>qw(Dumper);
$| = 1;
$ENV{PATH} = '/bin:/usr/bin';
$ENV{SHELL} = '/bin/sh' if exists $ENV{SHELL};
delete @ENV{qw(IFS CDPATH ENV BASH_ENV)};
logInit();
logSetSignal();
Info( "Watchdog starting\n" );
Info( "Watchdog pausing for ".START_DELAY." seconds\n" );
sleep( START_DELAY );
my $dbh = zmDbConnect();
my $sql = $Config{ZM_SERVER_ID} ? 'SELECT * FROM Monitors WHERE ServerId=?' : 'SELECT * FROM Monitors';
my $sth = $dbh->prepare_cached( $sql )
or Fatal( "Can't prepare '$sql': ".$dbh->errstr() );
while( 1 )
{
my $now = time();
my $res = $sth->execute( $Config{ZM_SERVER_ID} ? $Config{ZM_SERVER_ID} : () )
or Fatal( "Can't execute: ".$sth->errstr() );
while( my $monitor = $sth->fetchrow_hashref() )
{
next if $monitor->{Function} eq 'None';
my $restart = 0;
if ( zmMemVerify( $monitor )
&& zmMemRead( $monitor, "shared_data:valid" )
)
{
# Check we have got an image recently
my $image_time = zmGetLastWriteTime( $monitor );
if ( !defined($image_time) ) {
# Can't read from shared data
Debug( "LastWriteTime is not defined." );
next;
}
if ( !$image_time ) {
# We can't get the last capture time so can't be sure it's died.
Debug( "LastWriteTime is = $image_time." );
next;
}
my $max_image_delay = ( $monitor->{MaxFPS}
&&($monitor->{MaxFPS}>0)
&&($monitor->{MaxFPS}<1)
) ? (3/$monitor->{MaxFPS})
: $Config{ZM_WATCH_MAX_DELAY}
;
my $image_delay = $now-$image_time;
Debug( "Monitor $monitor->{Id} last captured $image_delay seconds ago, max is $max_image_delay\n" );
if ( $image_delay > $max_image_delay )
{
Info( "Restarting capture daemon for "
.$monitor->{Name}.", time since last capture $image_delay seconds ($now-$image_time)\n"
);
$restart = 1;
}
}
else
{
Info( "Restarting capture daemon for ".$monitor->{Name}.", shared data not valid\n" );
$restart = 1;
}
if ( $restart )
{
my $command;
if ( $monitor->{Type} eq 'Local' )
{
$command = "zmdc.pl restart zmc -d $monitor->{Device}";
}
else
{
$command = "zmdc.pl restart zmc -m $monitor->{Id}";
}
runCommand( $command );
}
elsif ( $monitor->{Function} ne 'Monitor' )
{
# Now check analysis daemon
$restart = 0;
# Check we have got an image recently
my $image_time = zmGetLastReadTime( $monitor );
if ( !defined($image_time) ) {
# Can't read from shared data
$restart = 1;
Error( "Error reading shared data for $$monitor{id} $$monitor{Name}\n");
} elsif ( !$image_time ) {
# We can't get the last capture time so can't be sure it's died.
$restart = 1;
Error( "Error getting last capture time for $$monitor{id} $$monitor{Name}\n");
} else {
my $max_image_delay = ( $monitor->{MaxFPS}
&&($monitor->{MaxFPS}>0)
&&($monitor->{MaxFPS}<1)
) ? (3/$monitor->{MaxFPS})
: $Config{ZM_WATCH_MAX_DELAY}
;
my $image_delay = $now-$image_time;
Debug( "Monitor $monitor->{Id} last analysed $image_delay seconds ago, max is $max_image_delay\n" );
if ( $image_delay > $max_image_delay )
{
Info( "Analysis daemon for $$monitor{id} $$monitor{Name} needs restarting,"
." time since last analysis $image_delay seconds ($now-$image_time)\n"
);
$restart = 1;
}
}
if ( $restart )
{
Info( "Restarting analysis daemon for $$monitor{id} $$monitor{Name}\n");
my $command = "zmdc.pl restart zma -m ".$monitor->{Id};
runCommand( $command );
} # end if restart
} # end if check analysis daemon
# Prevent open handles building up if we have connect to shared memory
zmMemInvalidate( $monitor );
} # end foreach monitor
sleep( $Config{ZM_WATCH_CHECK_INTERVAL} );
} # end while (1)
Info( "Watchdog exiting\n" );
exit();
|