Class: Commands::SSHInstance

Inherits:
Object
  • Object
show all
Defined in:
lib/commands/ssh_instance.rb

Instance Method Summary collapse

Instance Method Details

#options ⇒ Object

holds the options that were passed you can set any initial defaults here



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# File 'lib/commands/ssh_instance.rb', line 9

def options
  @options ||= {
  }
end

#register(opts, global_options) ⇒ Object 



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# File 'lib/commands/ssh_instance.rb', line 21

def register(opts, global_options)
  opts.banner = "Usage: ssh [options]"
  opts.description = "SSH into a server"

  opts.on('-i', "--instance instance", "The instance to connect to..") do |v|
    options[:instance] = v
  end

  opts.on('-r', "--role role", MetaOptions.roles, "Role to look for.") do |v|
    options[:role] = v
  end

  opts.on('-g', "--group deploy_group", "Required: Group to look for.") do |v|
    options[:group] = v
  end
end

#required_options ⇒ Object

required options



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# File 'lib/commands/ssh_instance.rb', line 15

def required_options
  @required_options ||= Set.new [
    :group
  ]
end

#run(global_options, amazon) ⇒ Object 



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# File 'lib/commands/ssh_instance.rb', line 39

def run(global_options, amazon)
  ec2 = amazon.ec2

  group_name = options[:group]
  deploy_group = amazon.find_deploy_group(group_name)
  group_config = deploy_group.config

  pick = nil
  instance_id = options[:instance]
  if instance_id.nil?
    instances = amazon.find_and_sort_named_instances(options[:group], options[:role])
  else
    instances = amazon.find_and_sort_named_instances()
    instances.each do |instance|
      resource_id = instance[:resource_id]
      if resource_id == instance_id
        pick = instance
        break
      end
    end
    if pick.nil?
      raise "The instance you specified was not a valid ZangZing deployed instance."
    end
  end

  if pick.nil?
    if instances.length == 0
      raise "No instance matched your search criteria."
    end

    pick = instances[0]
    if instances.length > 1
      # more than one
      puts "More than one instance matched, pick from list below the instance you want."
      i = 1
      instances.each do |instance|
        name = instance[:Name]
        resource_id = instance[:resource_id]
        puts "#{i}) #{name} => #{resource_id}"
        i += 1
      end
      print "Type the one you want to use: "
      r = Readline.readline()
      pick_num = r.to_i
      if pick_num < 1 || pick_num > instances.length
        raise "Your pick was not in range."
      end
      pick = instances[pick_num - 1]
    end
  end

  # ok, we have a pick lets ssh to it
  ec2_instance = ec2.describe_instances(pick[:resource_id])[0]
  dns_name = ec2_instance[:dns_name]
  puts "Running SSH for #{pick[:Name]}"
  ssh_cmd = "ssh -i ~/.ssh/#{group_config[:amazon_security_key]}.pem ec2-user@#{dns_name}"
  ZZSharedLib::CL.do_cmd ssh_cmd
end