Class: Ec2InstanceManager

Inherits:
Object
  • Object
show all
Includes:
Status
Defined in:
lib/ec2-instance-manager/ec2_instance_manager.rb

Constant Summary collapse

VERSION = 
'0.1.2'

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Status

#display_addresses, #display_ami_ids, #display_instances, #display_volumes, #get_instance_state, #status_info

Constructor Details

#initialize(arguments, stdin) ⇒ Ec2InstanceManager

Returns a new instance of Ec2InstanceManager.



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# File 'lib/ec2-instance-manager/ec2_instance_manager.rb', line 9

def initialize(arguments, stdin)
  @arguments = arguments
  @stdin = stdin
end

Instance Attribute Details

#config ⇒ Object (readonly)

Returns the value of attribute config.



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# File 'lib/ec2-instance-manager/ec2_instance_manager.rb', line 7

def config
  @config
end

#customer_key ⇒ Object (readonly)

Returns the value of attribute customer_key.



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# File 'lib/ec2-instance-manager/ec2_instance_manager.rb', line 7

def customer_key
  @customer_key
end

Instance Method Details

#ec2 ⇒ Object 



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# File 'lib/ec2-instance-manager/ec2_instance_manager.rb', line 27

def ec2
  @ec2 ||= AWS::EC2::Base.new(:access_key_id => config[@customer_key]['amazon_access_key_id'],
    :secret_access_key => config[@customer_key]['amazon_secret_access_key'])
end

#read_config ⇒ Object 



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# File 'lib/ec2-instance-manager/ec2_instance_manager.rb', line 15

def read_config
  if File.exists?("config.yml")
    @config = YAML.load(File.read("config.yml"))
  else
    begin
      @config = YAML.load(File.read("#{ENV['HOME']}/.ec2_instance_manager_config.yml"))
    rescue Errno::ENOENT
      raise "config.yml expected in current directory or ~/.ec2_instance_manager_config.yml"
    end
  end
end

#run ⇒ Object 



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# File 'lib/ec2-instance-manager/ec2_instance_manager.rb', line 32

def run
  puts "EC2 Instance Manager"
  puts
  puts "Which customer config do you want to use? (#{config.keys.join(", ")})"
  @customer_key = gets
  @customer_key = @customer_key.rstrip.lstrip
  @customer_key = 'default' if @customer_key.empty?

  puts "Configuration: #{@customer_key}"
  puts "AMAZON_ACCESS_KEY_ID: #{config[@customer_key]['amazon_access_key_id']}"
  puts "KEY: #{config[@customer_key]['key']}"
  puts "ZONE: #{config[@customer_key]['availability_zone']}"
  puts
  
  status_info

  puts
  puts "Which AMI Id do you want to launch?"
  ami_id = gets
  ami_id = ami_id.lstrip.rstrip

  result = ec2.run_instances(
    :image_id => ami_id,
    :instance_type => config[@customer_key]['instance_type'],
    :key_name => config[@customer_key]['key'],
    :availability_zone => config[@customer_key]['availability_zone']
  )

  instance_id = result.instancesSet.item[0].instanceId
  puts "=> Starting Instance Id: #{instance_id}"
  puts

  instance_state = nil
  while(instance_state != 'running')
    instance_state, dns_name = get_instance_state(instance_id)
    puts "=> Checking for running state... #{instance_state}"
    puts "=> Public DNS: #{dns_name}" if instance_state == 'running'
    sleep 10 unless instance_state == 'running'
  end

  puts

  puts "Do you want to associate a public IP? (leave empty if not)"
  public_ip = gets

  if not public_ip.empty? and public_ip.size > 1
    puts "Associating public IP address... #{public_ip}"
    result = ec2.associate_address(:instance_id => instance_id, :public_ip => public_ip.lstrip.rstrip)
    if result["return"] == "true"
      puts "=> Success."
    end
  end

  puts
  puts "Please enter your volume id (leave empty if you don't want to attach a volume):"
  volume_id = gets

  if not volume_id.empty? and volume_id.size > 1
    puts "Attaching volume... #{volume_id}"
    result = ec2.attach_volume(:volume_id => volume_id.lstrip.rstrip, :instance_id => instance_id, :device => '/dev/sdf')
    if result["return"] == "true"
      puts "=> Success."
    end
  end
end