list-silo-packages

#!/usr/bin/env ruby 

require 'optparse'
require 'ostruct'

def get_options args
  conf = OpenStruct.new(:hostname => nil, :all_packages => false)

  opts = OptionParser.new do |opts|

    opts.banner = "Usage: #{$0.sub(%r{.*/}, '')} [ --options ] [ 001 002 .. ]\n"

    opts.on("--hostname HOST",   String, "Required, the name of the host the silo is associated with (one of darchive or tarchive)") do |hostname|
      case hostname
      when /^darchive/i
        conf.hostname = 'silos.darchive.fcla.edu'
      when /^tarchive/i
        conf.hostname = 'silos.tarchive.fcla.edu'
      end
    end
    opts.on("--all-packages",  "If true, list out D2 packages as well as D1 (defaults to false)") do |all|
      conf.all_packages = all
    end
  end
  opts.parse!(args) 
  raise "No valid hostname provided: --hostname be one of darchive or tarchive"  unless conf.hostname  
rescue => e
  STDERR.puts e, opts
  exit 1
else
  return conf
end



conf  = get_options ARGV
silos = ARGV

silos.each do |silo|
  if not silo =~ /^0\d\d$/
    STDERR.puts "Invalid silo #{silo} specified: must be of form NNNN"
    exit 1
  end
end

silos.each do |silo|
  open ("| curl -s http://#{conf.hostname}:70/#{silo}/fixity/") do |fh|
    while not fh.eof?
      line = fh.gets
      next unless line =~ /<fixity.*name="/
      package = line.sub(/^.*name="/, '').sub(/".*/, '')

      if conf.all_packages
        puts package
      else
        puts package unless package =~ /\.\d\d\d$/
      end
    end
  end
end