Subversion Repositories camp_sysinfo_client_3

#!/usr/bin/env perl

use warnings;

use strict;  

use version ; our $VERSION = 'v1.0.0';

# Template for modules to be used in sysinfo

# Author: R. W. Rodolico

# Date:   2017-11-24

#

# gets information on ZFS partitions. Returns them as a hash

#

# Revision History

#

#

# find our location and use it for searching for libraries. library.pm must be in the same directory as the calling script

# or, if run interactively, in the parent of the modules

BEGIN {

   use FindBin;

   use File::Spec;

   # prepend the bin directory and its parent

   use lib File::Spec->catdir($FindBin::Bin), File::Spec->catdir("$FindBin::Bin/..");

   eval( 'use library;' );

   die sprintf( "Could not find library.pm in %s, INC is %s\n", __FILE__, join( "\n", @INC ) ) if $@;

}

#####

##### Change these to match your needs

#####

# Make this a list of all the modules we are going to use. You can replace undef with the version you need, if you like

my $modulesList = {

        'Data::Dumper'     => undef,

   };

# hash of commands that are needed for the system. key is the name of the command and, in some cases, the value will become

# the full path (from which or where)

my $commandsList = {

        'zpool' => undef,

   };

# list of operating systems this module can be used on.

my $osList = {

#         'mswin32' => undef,

         'freebsd' => undef,

         'linux'   => undef,

   };

# the category the return data should go into. See sysinfo for a list

my $CATEGORY = 'diskinfo';

#####

##### End of required

#####

# some variables needed for our system

my $errorPrepend = 'error: in ' . __FILE__; # this is prepended to any error messages

my @out; # temporary location for each line of output

# Try to load the modules we need. If we can not, then make a list of missing modules for error message.

for my $module ( keys %$modulesList ) {

   eval ( "use $module;" );

   push @out, "$errorPrepend Could not load $module" if $@;

}

if ( ! @out && ! checkOS ( $osList ) ) { # check if we are on an acceptible operating system

    push @out, "$errorPrepend Invalid Operating System";

}

if ( !@out && ! validCommandOnSystem ( $commandsList ) ) {

   push @out, "$errorPrepend Can not find some commands needed";

}

if ( !@out ) { # we made it, we have everything, so do the processing

   #####

   ##### Your code starts here. Remember to push all output onto @out

   #####

   sub zfsComponents {

      my $zpoolName = shift;

      my @lines = qx( zpool list -pHv $zpoolName );

      my @result;

      shift @lines; # we already have the first line of info

      my @temp = split( "\t", $lines[0] );

      push @result, "$CATEGORY\t$zpoolName\tlevel\t$temp[1]";

      shift @lines;

      my @out;

      while ( my $temp = shift @lines ) {

         @temp = split( "\t", $temp );

         push @out, $temp[1] if defined $temp[1];

      }

      push @result, "$CATEGORY\t$zpoolName\tcomponents\t" . join( " ", @out );

      return join( "\n", @result ) . "\n";

   }

   # process zfs

   my @devices = qx ( zpool list -pH );

   foreach my $device ( @devices ) {

      chomp $device;

      my ( $name, $size, $allocated, $free, $expandsz, $frag, $cap, $dedup, $health, $altroot ) = split( "\t", $device );

      $size /= 1024;

      $allocated /= 1024;

      $allocated = int( $allocated );

      push @out,  "$CATEGORY\t$name\tfstype\tzfs"; # next is fs type

      push @out,  "$CATEGORY\t$name\tsize\t$size"; # total partition size, in k

      push @out,  "$CATEGORY\t$name\tused\t$allocated"; # disk usage, in k

      push @out,  @{ &zfsComponents( $name ) };

   } # foreach

   #####

   ##### Your code ends here.

   #####

}

# If we are testing from the command line (caller is undef), print the results for debugging

print join( "\n", @out ) . "\n" unless caller;

# called by do, which has a value of the last assignment made, so make the assignment. The equivilent of a return

my $return = join( "\n", @out );