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#!/usr/bin/env perl
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#!/usr/bin/env perl
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use warnings;
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use warnings;
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use strict;
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use strict;
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use Data::Dumper;
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use version ; our $VERSION = 'v1.0.0';
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# Description: get information on md (RAID)
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# Template for modules to be used in sysinfo
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our $VERSION = '1.0';
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# Linux MD (RAID)
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# Author: R. W. Rodolico
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# Author: R. W. Rodolico
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# Date:  2017-11-24
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# Date:   2025-04-02
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#
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# get some information on RAID arrays covered by mdadm
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# Description: get information on md (RAID)
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#
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# Revision History
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#
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#
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# find our location and use it for searching for libraries. library.pm must be in the same directory as the calling script
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# or, if run interactively, in the parent of the modules
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BEGIN {
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BEGIN {
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   use FindBin;
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   use FindBin;
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   use File::Spec;
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   use File::Spec;
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   use lib File::Spec->catdir($FindBin::Bin);
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   # prepend the bin directory and its parent
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   eval( 'use library;' ); die "Could not find library.pm in the code directory\n" if $@;
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   use lib File::Spec->catdir($FindBin::Bin), File::Spec->catdir("$FindBin::Bin/..");
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   eval( 'use Data::Dumper;' );
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   eval( 'use library;' );
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   die sprintf( "Could not find library.pm in %s, INC is %s\n", __FILE__, join( "\n", @INC ) ) if $@;
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}
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}
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#####
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# check for valid OS.
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##### Change these to match your needs
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#####
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# 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
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my $modulesList = {
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exit 1 unless &checkOS( { 'linux' => undef } );
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        'Data::Dumper'     => undef,
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   };
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# check for required commands, return 2 if they don't exist. Enter an full list of all commands required. If one doesn't exist
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# hash of commands that are needed for the system. key is the name of the command and, in some cases, the value will become
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# the full path (from which or where)
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# script returns a 2
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my $commandsList = {
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foreach my $command ( 'mdadm', 'fdisk' ) {
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        'mdadm' => undef,
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   exit 2 unless &validCommandOnSystem( $command );
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        'fdisk' => undef,
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   };
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}
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# list of operating systems this module can be used on.
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my $osList = {
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#         'mswin32' => undef,
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#         'freebsd' => undef,
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         'linux'   => undef,
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   };
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# category we will use for all values found
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# the category the return data should go into. See sysinfo for a list
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# see sysinfo for a list of valid categories
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my $CATEGORY = 'diskinfo';
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my $CATEGORY = 'diskinfo';
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# run the commands necessary to do whatever you want to do
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#####
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# The library entered above has some helper routines
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##### End of required
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# validCommandOnSystem -- passed a name, returns the fully qualified path or '' if it does not exist
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# cleanUp - passed a delimiter and a string, does the following (delimiter can be '')
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#           chomps the string (removes trailing newlines)
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#           removes all text BEFORE the delimiter, the delimiter, and any whitespace
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#           thus, the string 'xxI Am x  a weird string' with a newline will become
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#           'a weird string' with no newline
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#####
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# now, return the tab delimited output (to STDOUT). $CATEGORY is the first
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# some variables needed for our system
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# item, name as recognized by sysinfo is the second and the value is
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my $errorPrepend = 'error: in ' . __FILE__; # this is prepended to any error messages
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# the last one. For multiple entries, place on separate lines (ie, newline separated)
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my @out; # temporary location for each line of output
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exit 1 unless -e '/proc/mdstat';
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# Try to load the modules we need. If we can not, then make a list of missing modules for error message.
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open MD,'</proc/mdstat' or exit 1;
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for my $module ( keys %$modulesList ) {
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my @temp = <MD>;
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   eval ( "use $module;" );
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close MD;
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   push @out, "$errorPrepend Could not load $module" if $@;
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}
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my @results;
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while ( my $line = shift @temp ) {
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   chomp $line;
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   if ( $line =~ m/^(md\d+)\s+:\s+(.*)$/ ) {
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      my $device = $1;
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      my @components = split( /\s+/, $2 );
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      shift @components;
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      push @results, "$CATEGORY\t$device\tlevel\t" . shift(@components);
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      push @results, "$CATEGORY\t$device\tcomponents\t" . join( " ", @components );
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      my $temp = qx( mdadm --detail /dev/$device | grep 'Array Size' | cut -d':' -f2 | cut -d' ' -f2 );
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if ( ! @out && ! checkOS ( $osList ) ) { # check if we are on an acceptible operating system
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      chomp $temp;
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      push @results, "$CATEGORY\t$device\tsize\t$temp";
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    push @out, "$errorPrepend Invalid Operating System";
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   }
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}
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}
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if ( !@out && ! validCommandOnSystem ( $commandsList ) ) {
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   push @out, "$errorPrepend Can not find some commands needed";
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}
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if ( !@out ) { # we made it, we have everything, so do the processing
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   #####
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   ##### Your code starts here. Remember to push all output onto @out
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   #####
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   if ( -e '/proc/mdstat' ) {
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      open MD,'</proc/mdstat' or exit 1;
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      my @temp = <MD>;
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      close MD;
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      while ( my $line = shift @temp ) {
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         chomp $line;
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         if ( $line =~ m/^(md\d+)\s+:\s+(.*)$/ ) {
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            my $device = $1;
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            my @components = split( /\s+/, $2 );
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            shift @components;
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            push @out, "$CATEGORY\t$device\tlevel\t" . shift(@components);
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            push @out, "$CATEGORY\t$device\tcomponents\t" . join( " ", @components );
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            my $temp = qx( mdadm --detail /dev/$device | grep 'Array Size' | cut -d':' -f2 | cut -d' ' -f2 );
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            chomp $temp;
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            push @out, "$CATEGORY\t$device\tsize\t$temp";
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         }
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      }
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   }
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   #####
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print join( "\n", @results ) . "\n";
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   ##### Your code ends here.
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   #####
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}
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# If we are testing from the command line (caller is undef), print the results for debugging
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print join( "\n", @out ) . "\n" unless caller;
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# called by do, which has a value of the last assignment made, so make the assignment. The equivilent of a return
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exit 0;
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my $return = join( "\n", @out );
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