#!/usr/bin/env perl       
use strict;
use warnings;
use XML::XPath;
use Data::Dumper;

my $eventxml = 'events.xml';
my $evenxp = XML::XPath->new(filename => $eventxml);
my $xpath = "//event/custom_attribute_list/custom_attribute[normalize-space(name)='SLB_SSRID']/value";

my @eventrecords = ();
foreach my $node ($evenxp->findnodes($xpath)) { 
  my $ssrid = $node->string_value;
  $ssrid =~ s/^\s+|\s+$//g ;
   		push @eventrecords, 
      { eventid => $ssrid
      };
 
  } 
@eventrecords = sort{ $b->{eventid} <=> $a->{eventid} } @eventrecords; #Sorting

 my $index;
 my @recordcount;
 for (@eventrecords) {
	 $index++;
		push @recordcount, {
			 line => $index
		};
	
 }
splice @eventrecords, $index, 0, @recordcount;
print Dumper \@eventrecords;