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package Daemon::Shutdown::Monitor::smbstatus; |
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use warnings; |
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use strict; |
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use Params::Validate qw/:all/; |
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use IPC::Run; |
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use YAML::Any; |
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use Log::Log4perl; |
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=head1 NAME |
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Daemon::Shutdown::Monitor::smbstatus - check for samba locks |
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=head1 SYNOPSIS |
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Monitor samba file locks |
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=head1 DESCRIPTION |
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Uses C to look for locked files every "loop_sleep". If no files are locked, |
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the flag "trigger_pending" is set. If a further "trigger_time" seconds |
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pass and all disks are still in a spun down state, the trigger is sent back to the parent |
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process (return 1). |
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=head1 METHODS |
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=head2 new |
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=over 2 |
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=item loop_sleep |
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How long to sleep between each test |
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Default: 60 (1 minute) |
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=item trigger_time |
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The time to wait after discovering that all disks are spun down before returning (trigger a shutdown). |
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Default: 3600 (1 hour) |
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=back |
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=head3 Example configuration |
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monitor: |
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smbstatus: |
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trigger_time: 1800 |
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loop_sleep: 360 |
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=cut |
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sub new { |
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my $class = shift; |
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my %params = @_; |
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# Validate the config file |
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%params = validate_with( |
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params => \%params, |
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spec => { |
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loop_sleep => { |
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regex => qr/^\d*$/, |
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default => 60, |
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}, |
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trigger_time => { |
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regex => qr/^\d*$/, |
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default => 3600, |
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}, |
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}, |
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); |
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my $self = {}; |
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$self->{params} = \%params; |
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$self->{trigger_pending} = 0; |
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bless $self, $class; |
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my $logger = Log::Log4perl->get_logger(); |
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$self->{logger} = $logger; |
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$logger->debug( "Monitor smbstatus params:\n" . Dump( \%params ) ); |
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return $self; |
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} |
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=head2 run |
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Run the smbstatus lock monitor |
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=cut |
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sub run { |
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my $self = shift; |
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my $logger = $self->{logger}; |
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$logger->info( "Monitor started running: smbstatus" ); |
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my $conditions_met = 1; |
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# look for locks |
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my @cmd = ( qw/smbstatus -L/ ); |
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$logger->debug( "Monitor smbstatus CMD: " . join( ' ', @cmd ) ); |
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my ( $in, $out, $err ); |
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if ( not IPC::Run::run( \@cmd, \$in, \$out, \$err, IPC::Run::timeout( 10 ) ) ) { |
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$logger->warn( "Could not run '" . join( ' ', @cmd ) . "': $!" ); |
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} |
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if ( $err ) { |
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$logger->error( "Monitor smbstatus: $err" ); |
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$conditions_met = 0; |
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} |
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# If are active locks, the conditions for trigger are not met |
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# XXX other languages? |
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if ( $out =~ m/Locked files:/ ) { |
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$logger->debug( "Monitor smbstatus sees active file locks" ); |
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$conditions_met = 0; |
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} |
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if ( $conditions_met ) { |
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$self->{trigger_pending} = $self->{trigger_pending} || time(); |
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if ( $self->{trigger_pending} |
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and ( time() - $self->{trigger_pending} ) >= $self->{params}->{trigger_time} ) |
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{ |
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# ... and the trigger was set, and time has run out: time to return! |
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$logger->info( "Monitor smbstatus trigger time reached after $self->{params}->{trigger_time}" ); |
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# Reset the trigger_pending because otherwise if this was a suspend, and the computer comes |
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# up again hours/days later, it will immediately fall asleep again... |
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$self->{trigger_pending} = 0; |
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return 1; |
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} |
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$logger->info( "Monitor smbstatus found no locks: trigger pending." ); |
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} else { |
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if ( $self->{trigger_pending} ) { |
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$logger->info( "Monitor smbstatus trigger time being reset because of new file locks" ); |
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} |
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# Conditions not met - reset the trigger incase it was previously set. |
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$self->{trigger_pending} = 0; |
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} |
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return 0; |
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} |
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=head1 AUTHOR |
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150
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Robin Clarke, C<< >> |
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Ioan Rogers, C<< >> |
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154
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=head1 LICENSE AND COPYRIGHT |
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Copyright 2011 Robin Clarke. |
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This program is free software; you can redistribute it and/or modify it |
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under the terms of either: the GNU General Public License as published |
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by the Free Software Foundation; or the Artistic License. |
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See http://dev.perl.org/licenses/ for more information. |
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164
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=cut |
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1; # End of Daemon::Shutdown::Monitor::smbstatus |