#!/usr/bin/env ruby
#------------------------------------------------------------------------------
#  will look in dirname for the request files, for each request file 
#  will call root script to do the concatenation
#  last check: 2004-08-01
#
#  example: 
#  --------
#  cdfopr/OfflineMon/scripts/parse_sam_farm_logs -d input_directory -o output_file
#------------------------------------------------------------------------------
require 'find'
require 'fileutils'
require 'getoptlong'

def usage
  puts "usage: parse_sam_farm_logs -d dirname -o output_file"
  exit(-1)
end

usage if ARGV.length < 0

opts = GetoptLong.new(
  [ "--directory"     , "-d",        GetoptLong::REQUIRED_ARGUMENT ],
  [ "--output"        , "-o",        GetoptLong::REQUIRED_ARGUMENT ],
  [ "--stream"        , "-s",        GetoptLong::REQUIRED_ARGUMENT ],
  [ "--unzip"         , "-u",        GetoptLong::REQUIRED_ARGUMENT ],
  [ "--verbose"       , "-v",        GetoptLong::NO_ARGUMENT       ]
)

$work_dir   = `pwd`.strip
$stream     = "zzzzzz";
$directory  = "./"
$verbose    = 0;
$unzip      = 0;
$script     = $work_dir+"/cdfopr/OfflineMon/scripts/parse_sam_farm_production_log.awk" ;
$output_file="";

#----------------------------- process the parsed options
opts.each do |opt, arg|
  if    (opt == "--directory"     ) ; $directory   = arg
  elsif (opt == "--output"        ) ; $output_file = arg
  elsif (opt == "--stream"        ) ; $stream      = arg
  elsif (opt == "--unzip"         ) ; $unzip       = arg.int
  elsif (opt == "--verbose"       ) ; $verbose     = 1
  end

  if ($verbose != 0) ; puts "Option: #{opt}, arg #{arg.inspect}" ; end
end

#------------------------------------------------------------------------------
# all the files in the input directory are supposed to be the logfiles
#------------------------------------------------------------------------------
list = Dir.entries($directory);

if ( $output_file != "" ) 
  rc=`if [ -f #{$output_file} ] ; then rm #{$output_file} ; fi ; touch #{$output_file}`
end

list.each { |file|
#  fn = file.split("/").last;

  if ((file != ".") && ( file != ".."))
    full_name=$directory+"/"+file;
    puts "#{full_name} #{File.size(full_name)}";
    if ($unzip != 0)
      cmd = "gzip -d -c " + full_name + " | " + $script ;
    else
      cmd = "cat " + full_name + " | " + $script ;
    end
    if ( $output_file != "") ; cmd = cmd + " >> " + $output_file; end
    rc=`#{cmd}`
  end
}