Class: Runner

Inherits:
Object
  • Object
show all
Includes:
Options, Utils
Defined in:
lib/runner.rb

Constant Summary

Constants included from Utils

Utils::INSTANCE_MAPPINGS_FILENAME

Instance Method Summary collapse

Methods included from Options

#opts, #parse_attach_volume_options, #parse_spinup_options, #parse_ssh_options

Methods included from Utils

#console_output, #delete_instance_from_datastore, #get_instance, #get_instances, #get_name_for_instance, #load_instances_from_datastore, #parse_aws_status_line_into_instance, #run_instance, #scp_up, #spindown, #spinup, #ssh, #terminate_instances, #write_instance_to_datastore, #write_instances_to_datastore

Instance Method Details



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# File 'lib/runner.rb', line 63

def banner
  <<-EOS
Script enabling easier interaction with Amazon EC2 instances.

Usage: goec2 COMMAND [INSTANCE_NAME] [ARGS]

Commands:

spinup          Tells EC2 service to launch a new instance. By default generates a random name to associate with that instance through goec2
spindown        Terminates the specified instance
status          Retrieves the status of all running EC2 instances
ssh             SSH into an EC2 instance
scp_up          Upload a file to an EC2 instance (goec2 scp_up INSTANCE_NAME SOURCE DEST)
webopen         Open the EC2 instance in a web browser (Mac OSX only)
output          Get console output for a given EC2 instance
address         Get the public address for a given EC2 instance
attach_volume   Attach an EBS volume to the given EC2 instance
  EOS
end

#run(args) ⇒ Object 



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# File 'lib/runner.rb', line 9

def run(args)
  case args[0]
  when /spinup/
    options = parse_spinup_options(args,
                         :name => get_name_for_instance,
                         :instance_size => 'm1.large',
                         :zone => 'us-east-1c')
    puts "Spining up image with options: #{options.inspect}"
    spinup(options)
  when /spindown/
    raise "Need an instance name" unless args[1]
    spindown args[1]
  when /status/
    puts "Getting the status"
    instances = if args[1] then [get_instance(args[1])].compact else get_instances end
    instances.each do |instance|
      puts "%s\t%s\t%s\t%s" % [instance.name, instance.instance_id, instance.status, instance.url]
    end
  when /ssh/
    instance_name = args.delete_at(1)
    raise "Need an instance name" unless instance_name
    instance = get_instance(instance_name)
    raise "Unknown instance name #{instance_name}" unless instance
    options = parse_ssh_options(args, :user => 'w3dev', :keypair_path => EC2_KEYPAIR_PATH)
    ssh instance.url, options
  when /scp_up/
    raise "Need an istance name" unless args[1]
    raise "Need a source path" unless args[2]
    raise "Need a destination path" unless args[3]
    instance = get_instance(args[1])
    scp_up instance, args[2], args[3]
  when /webopen/
    raise "Need an instance name" unless args[1]
    instance = get_instance(args[1])
    raise "Unknown instance name #{args[1]}" unless instance
    `open http://#{instance.url}`
  when /output/
    raise "Need an instance name" unless args[1]
    console_output get_instance(args[1])
  when /address/
    raise "Need an instance name" unless args[1]
    instance = get_instance(args[1])
    puts instance.url
  when /attach_volume/
    raise "Need an instance name" unless args[1]
    instance_name = args.delete_at(1)
    options = parse_attach_volume_options(args, :device => '/dev/sdf')
    instance = get_instance(instance_name)
    `ec2-attach-volume #{options[:volume_id]} -i #{instance.instance_id} -d #{options[:device]}`
  else
    puts banner
  end
end