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#!/usr/bin/env perl
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use warnings;
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use strict;
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# Description: Processes Xen Clients
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our $VERSION = '1.1';
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# Looks at various Xen parameters, mainly which DOMU's are running on it
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# Written by RWR, 20160911
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BEGIN {
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push @INC, shift;
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}
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use library;
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# category we will use for all values found
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# see sysinfo for a list of valid categories
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my $CATEGORY = 'xen';
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# run the commands necessary to do whatever you want to do
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# The library entered above has some helper routines
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# validCommandOnSystem -- passed a name, returns the fully qualified path or
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# '' if it does not exist
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# cleanUp - passed a delimiter and a string, does the following (delimiter
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# 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
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# whitespace
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# thus, the string 'xxI Am x a weird string' with a newline will
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# become
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# 'a weird string' with no newline
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# now, return the tab delimited output (to STDOUT). $CATEGORY is the first
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# item, name as recognized by sysinfo is the second and the value is
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# the last one. For multiple entries, place on separate lines (ie, newline
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# separated)
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my $xl = &validCommandOnSystem( 'xl' );
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exit 1 unless $xl;
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$xl .= ' list';
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sub parseOutput {
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my $output = shift;
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my @lines = split( "\n", $output );
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my %domu;
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return ( 'noname' ) unless $lines[0] =~ m/^Name/;
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return ( 'baddomu') unless $lines[1] =~ m/^Domain-0/;
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for ( my $i = 2; $i < @lines; $i++ ) {
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my ( $name,$id,$mem,$vcpu,$state,$time) = split( /\s+/, $lines[$i] );
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$domu{$name}{'id'} = $id;
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$domu{$name}{'memory'} = $mem;
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$domu{$name}{'numcpu'} = $vcpu;
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}
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return \%domu;
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}
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my $output = `$xl`;
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my $hier = &parseOutput( $output );
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foreach my $domu ( sort keys %$hier ) {
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my $temp = $$hier{$domu};
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foreach my $key ( sort keys %$temp ) {
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print "$CATEGORY\tvirtual\t$domu\t$key\t$$temp{$key}\n";
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}
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} # foreach
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# if you have not done an exit state above (1 indicating no data), do one
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# here (exit 0 indicates success)
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# NOTE: you can bail early with exit 1 if you can not process anything
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# because it is the wrong system or something
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exit 0;
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