Module: Stem::CLI

Extended by:
CLI
Included in:
CLI
Defined in:
lib/stem/cli.rb

Instance Method Summary collapse

Instance Method Details

#create(name = nil, instance = nil, tag_list = nil) ⇒ Object 



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# File 'lib/stem/cli.rb', line 79

def create name = nil, instance = nil, tag_list = nil
  abort "Usage: create ami-name instance-to-capture ami_tag1,ami_tag2" unless name && instance
  tags = tag_list ? tag_list.split(',') : []
  image_id = Stem::Image::create(name, instance, tags)
  puts "New image ID: #{image_id}"
end

#describe(what) ⇒ Object 



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# File 'lib/stem/cli.rb', line 86

def describe what
  require 'pp'
  if (what[0..2] == "ami")
    pp Stem::Image::describe(what)
  elsif
    pp Stem::Instance::describe(what)
  end
end

#destroy(instance = nil) ⇒ Object 



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# File 'lib/stem/cli.rb', line 95

def destroy instance = nil
  abort "Usage: destroy instance-id" unless instance
  Stem::Instance::destroy(instance)
end

#dispatch_command(command, arguments) ⇒ Object 



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# File 'lib/stem/cli.rb', line 43

def dispatch_command command, arguments
  case command
    when "launch"
      launch(*arguments)
    when "create"
      create(*arguments)
    when "list"
      list(*arguments)
    when "describe"
      describe(*arguments)
    when "destroy"
      destroy(*arguments)
    when nil
      puts "Please provide a command."
    else
      puts "Command \"#{command}\" not recognized."
  end
end

#launch(config_file = nil, userdata_file = nil) ⇒ Object 



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# File 'lib/stem/cli.rb', line 62

def launch config_file = nil, userdata_file = nil
  abort "No config file" unless config_file
  userdata = case
               when userdata_file.nil?
                 nil
               when File.directory?(userdata_file)
                 Userdata.compile(userdata_file)
               when File.file?(userdata_file)
                 File.new(userdata_file).read
               else
                 abort 'Unable to interpret userdata object.'
             end
  conf = JSON.parse(File.new(config_file).read)
  instance = Stem::Instance.launch(conf, userdata)
  puts "New instance ID: #{instance}"
end

#list(*arguments) ⇒ Object 



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# File 'lib/stem/cli.rb', line 100

def list *arguments
  Stem::Instance::list(*arguments)
end

#parse_options(args) ⇒ Object

Return a structure describing the options.



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# File 'lib/stem/cli.rb', line 12

def parse_options(args)
  opts = OptionParser.new do |opts|
    opts.banner = "Usage: stem COMMAND ..."

    opts.separator " "

    opts.separator "Examples:"
    opts.separator "  $ stem launch prototype.config prototype-userdata.sh"
    opts.separator "  $ stem launch examples/lxc-server/lxc-server.json examples/lxc-server/"
    opts.separator "  $ stem list"
    opts.separator "  $ stem create ami-name instance-id ami_tag1,ami_tag2"

    opts.separator " "
    opts.separator "Options:"

    opts.on("-v", "--version", "Print the version") do |v|
      puts "Stem v#{Stem::Version}"
      exit
    end

    opts.on_tail("-h", "--help", "Show this message") do
      puts opts
      exit
    end
  end

  opts.separator ""

  opts.parse!(args)
end