Class: HostBuilder

Inherits:
UsesAttributes show all
Defined in:
lib/hosties/Reification.rb

Instance Method Summary collapse

Methods inherited from UsesAttributes

#metaclass

Constructor Details

#initialize(type, hostname) ⇒ HostBuilder

Returns a new instance of HostBuilder.



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# File 'lib/hosties/Reification.rb', line 40

def initialize(type, hostname)
  if Hosties::HostDefinitions[type].nil? then
    raise ArgumentError, "Unrecognized host type"
  end
  @type = type
  @definition = Hosties::HostDefinitions[@type]
  @hostname = hostname
  @service_ports = {} # Map of service type to port
  super(@definition) # Creates attribute code
  # Services are really just a special kind of attribute, but for now I'll
  # keep them separate. I'm thinking maybe I could add a new type of attribute
  # constraint that let's a user specify that an attribute must be numeric, or
  # a string for instance.
  @definition.services.each do |service_type|
    self.metaclass.send(:attr_accessor, service_type)
    self.metaclass.send(:define_method, service_type) do |port|
      raise ArgumentError, "Port number required" unless port.is_a? Integer
      @service_ports[service_type] = port
    end
  end
end

Instance Method Details

#finish ⇒ Object 



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# File 'lib/hosties/Reification.rb', line 62

def finish
  # Ensure all services have been set
  @definition.services.each do |svc|
    raise ArgumentError, "Missing service #{svc}" if @service_ports[svc].nil?
  end
  # TODO: More clever data repackaging
  super.merge({ :hostname => @hostname }).merge(@service_ports)
end