gizmo.rb

#!/usr/bin/ruby
require 'net/scp'
require 'optparse'
require 'json'

require 'rubygems'
require 'bundler'
Bundler.setup(:default)

require './lib/runner'

# capture args
args = {}
OptionParser.new do |opts|
  opts.banner = "Usage: gizmo.rb [args] "

  opts.on("-h", "--host HOSTNAME", "Target hostname") do |host|
    args[:host] = host
  end

  opts.on("-p", "--port PORT", "Target port") do |port|
    args[:port] = port || "22"
  end

  opts.on("-u", "--user USERNAME", "connect as user") do |user|
    args[:user] = user
  end

  opts.on("-k", "--password PASSWORD", "password to use") do |password|
    args[:password] = password
  end
end.parse!

manifest_filename = ARGV.pop

# guard against bad args
raise Exception.new("hostname not provided") if args[:host].nil?
raise Exception.new("username not provided") if args[:user].nil?
raise Exception.new("password not provided") if args[:password].nil?
raise Exception.new("manifest file not provided") if manifest_filename.nil?

# load the manifest
manifest = JSON.parse(File.read(manifest_filename))

# load up a gizmo and execute
puts "Gizmo loading up!"
g = Runner.new({:args => args, :manifest => manifest})
g.prepare()
g.run()
g.result()