########################################################
# Please file all bug reports, patches, and feature
# requests under:
#      https://sourceforge.net/p/logwatch/_list/tickets
# Help requests and discusion can be filed under:
#      https://sourceforge.net/p/logwatch/discussion/
########################################################

########################################################
## Copyright (c) 2014-2019 Orion Poplawski
## Covered under the included MIT/X-Consortium License:
##    http://www.opensource.org/licenses/mit-license.php
## All modifications and contributions by other persons to
## this script are assumed to have been donated to the
## Logwatch project and thus assume the above copyright
## and licensing terms.  If you want to make contributions
## under your own copyright or a different license this
## must be explicitly stated in the contribution an the
## Logwatch project reserves the right to not accept such
## contributions.  If you have made significant
## contributions to this script and want to claim
## copyright please contact logwatch-devel@lists.sourceforge.net.
#########################################################

use strict;
use warnings;
my $Detail = $ENV{'LOGWATCH_DETAIL_LEVEL'} || 0;
my $PoolThreshold = $ENV{'pool_threshold'} || 0;
my $PoolMetadataThreshold = $ENV{'pool_metadata_threshold'} || 0;
my %Active;
my %PoolUsed;
my %PoolMetadataUsed;
my $SnapshotThreshold = $ENV{'snapshot_threshold'} || 0;
my %SnapshotUsed;
my %MonitoringOn;
my %MonitoringOff;
my %MonitoringSnapshot;
my %MonitoringSnapshotOff;
my %Resize;
my %OtherList;

while (defined(my $ThisLine = <STDIN>)) {
   chomp($ThisLine);
   # Seeing leading space on Fedora 26
   $ThisLine =~ s/^ *//;
   if ($ThisLine =~ /^(pvscan\[\d+\] )?PV .* online(?:|, VG .* is complete)\.$/ 
       or $ThisLine =~ /(pvscan\[\d+\] )?activating all complete VGs for init/
       or $ThisLine =~ /(pvscan\[\d+\] )?PVID .* read from .* last written to/
       or $ThisLine =~ /(pvscan\[\d+\] )?VG .* not using quick activation/
       or $ThisLine =~ /(pvscan\[\d+\] )?VG .* run autoactivation/
       # This happens often at startup
       or $ThisLine =~ /WARNING: lvmetad is being updated, retrying/
       # This happens on shutdown
       or $ThisLine =~ /dmeventd detected break while being idle for 0 second\(s\), exiting/
       # This happens when dmeventd autostarted
       or $ThisLine =~ /dmeventd ready for processing\.$/
       or $ThisLine =~ /dmeventd shutting down\.$/
       or $ThisLine =~ /dmeventd was idle for .*, exiting\.$/
       # Misc cleanups
       or $ThisLine =~ /Logical volume .* successfully resized/
      ) {
      # Ignore
   } elsif ($ThisLine =~ /^(?:WARNING: )?Thin (\S+) is now (\d+(\.\d+)?)% full/) {
      $PoolUsed{$1} = $2 if $2 >= $PoolThreshold;
   } elsif ($ThisLine =~ /^(?:WARNING: )?Thin metadata (\S+) is now (\d+(\.\d+)?)% full/) {
      $PoolMetadataUsed{$1} = $2 if $2 >= $PoolMetadataThreshold;
   } elsif ($ThisLine =~ /^Monitoring thin pool (\S+)\./) {
      $MonitoringOn{$1}++;
   } elsif ($ThisLine =~ /^Monitoring snapshot (\S+)\./) {
      $MonitoringSnapshot{$1}++;
   } elsif ($ThisLine =~ /^No longer monitoring thin pool (\S+)\./) {
      $MonitoringOff{$1}++;
   } elsif ($ThisLine =~ /^No longer monitoring snapshot (\S+)\./) {
      $MonitoringSnapshotOff{$1}++;
   } elsif ($ThisLine =~ /^(?:WARNING: )?Snapshot (\S+) is now (\d+(\.\d+)?)% full/) {
      $SnapshotUsed{$1} = $2 if $2 >= $SnapshotThreshold;
   } elsif ($ThisLine =~ /^(\d+) logical volume\(s\) in volume group "(\S+)" monitored/) {
      $MonitoringOn{$2}++;
   } elsif ($ThisLine =~ /^(\d+) logical volume\(s\) in volume group "(\S+)" unmonitored/) {
      $MonitoringOff{$2}++;
   } elsif ($ThisLine =~ /^(\d+) logical volume\(s\) in volume group "(\S+)" now active/) {
      $Active{$2}=$1;
   } elsif ($ThisLine =~ /^Size of logical volume (\S+) changed from (.*) to (.*)\.$/) {
      $Resize{$1}="$3"
   } else {
      $OtherList{$ThisLine}++;
   }
}

if (keys %PoolUsed) {
   print "Thin Pool Usage:\n";
   foreach my $Pool (sort {$a cmp $b} keys %PoolUsed) {
      print "    $Pool: $PoolUsed{$Pool}% full\n";
   }
   print "\n";
}

if (keys %PoolMetadataUsed) {
   print "Thin Pool Metadata Usage:\n";
   foreach my $Pool (sort {$a cmp $b} keys %PoolMetadataUsed) {
      print "    $Pool: $PoolMetadataUsed{$Pool}% full\n";
   }
   print "\n";
}

if (keys %SnapshotUsed) {
   print "Snapshot Usage:\n";
   foreach my $Snapshot (sort {$a cmp $b} keys %SnapshotUsed) {
      print "    $Snapshot: $SnapshotUsed{$Snapshot}% full\n";
   }
   print "\n";
}

if (keys %Resize) {
   print "Resize snapshot:\n";
   foreach my $Snapshot (sort {$a cmp $b} keys %Resize) {
      print "    $Snapshot: $Resize{$Snapshot}\n";
   }
   print "\n";
}

if (keys %Active and $Detail) {
   print "LVM active:\n";
   foreach my $VG (sort {$a cmp $b} keys %MonitoringOn) {
      print "    $VG: $Active{$VG} logical volume(s)\n";
   }
   print "\n";
}

if (keys %MonitoringOn and $Detail) {
   print "Monitoring started for:\n";
   foreach my $Pool (sort {$a cmp $b} keys %MonitoringOn) {
      print "    $Pool: $MonitoringOn{$Pool} Time(s)\n";
   }
   print "\n";
}

if (keys %MonitoringOff and $Detail) {
   print "Monitoring stopped for:\n";
   foreach my $Pool (sort {$a cmp $b} keys %MonitoringOff) {
      print "    $Pool: $MonitoringOff{$Pool} Time(s)\n";
   }
   print "\n";
}

if (keys %MonitoringSnapshot and $Detail) {
   print "Monitoring snapshot:\n";
   foreach my $Snapshot (sort {$a cmp $b} keys %MonitoringSnapshot) {
      print "    $Snapshot: $MonitoringSnapshot{$Snapshot} Time(s)\n";
   }
   print "\n";
}

if (keys %MonitoringSnapshotOff and $Detail) {
   print "Monitoring stopped for snapshot:\n";
   foreach my $Snapshot (sort {$a cmp $b} keys %MonitoringSnapshotOff) {
      print "    $Snapshot: $MonitoringSnapshotOff{$Snapshot} Time(s)\n";
   }
   print "\n";
}

if (keys %OtherList) {
   print "\n**Unmatched Entries**\n";
   foreach my $line (sort {$a cmp $b} keys %OtherList) {
      print "   $line: $OtherList{$line} Time(s)\n";
   }
}

exit(0);

# vi: shiftwidth=3 tabstop=3 syntax=perl et
# Local Variables:
# mode: perl
# perl-indent-level: 3
# indent-tabs-mode: nil
# End: