Munge it, baby

get_dp_pool_usage_refactored.rb

#!/usr/bin/env ruby                                                                                                                                                                                                
                                                                                                                                                                                                                   
require 'rubygems'                                                                                                                                                                                                 
require 'fastercsv'                                                                                                                                                                                                
                                                                                                                                                                                                                   
unless ARGV[0] && ARGV[1]                                                                                                                                                                                          
  puts "Usage: #{$0} <ARRAY_NAME> <POOL_ID>"                                                                                                                                                                       
  puts "Example: #{$0} VSP 0"                                                                                                                                                                                      
  exit 1                                                                                                                                                                                                           
end                                                                                                                                                                                                                
                                                                                                                                                                                                                   
array_name = ARGV[0]                                                                                                                                                                                               
pool_id    = ARGV[1].to_i                                                                                                                                                                                          
hicommand  = `/srv/hitachi/devicemanager/cli/HiCommandCLI.sh -f csv GetStorageArray subtarget=pool`                                                                                                                
options    = {:headers => true, :converters => :numeric, :header_converters => lambda {|h| h}}                                                                                                                     
                                                                                                                                                                                                                   
data = FasterCSV.new(hicommand, options).map {|r| r.to_hash}                                                                                                                                                       
data.each do |row|                                                                                                                                                                                                 
  if row["StorageArray.name"] =~ /^#{array_name}/ && row["StorageArray.Pool.poolID"] == pool_id                                                                                                                    
    puts "Array: #{row["StorageArray.name"]}"                                                                                                                                                                      
    puts "Pool ID: #{row["StorageArray.Pool.poolID"]}"                                                                                                                                                             
    puts "Usage: #{row["StorageArray.Pool.usageRate"]}"                                                                                                                                                            
    puts "Free KB: #{row["StorageArray.Pool.freeCapacityInKB"]}"                                                                                                                                                   
    puts "Total KB: #{row["StorageArray.Pool.capacityInKB"]}"
    exit 0                                                                                                                                                 
  end                                                                                                                                                                                                              
end