Module: RubyEventStore::ProcessManager

Defined in:
lib/ruby_event_store/process_manager.rb,
lib/ruby_event_store/process_manager/retry.rb,
lib/ruby_event_store/process_manager/version.rb

Defined Under Namespace

Modules: ProcessMethods, Retry, Subscriptions

Constant Summary collapse

VERSION = 
"0.1.0"

Class Method Summary collapse

Class Method Details

.with_state(&state_class_block) ⇒ Object 



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# File 'lib/ruby_event_store/process_manager.rb', line 51

def self.with_state(&state_class_block)
  unless block_given?
    raise ArgumentError, "A block returning the state class is required."
  end

  Module.new do
    @state_definition_block = state_class_block

    define_method(:initial_state) do
      block = self.class.instance_variable_get(:@state_definition_block)
      raise "State definition block not found on #{self.class}" unless block

      state_class = block.call
      raise "State definition block did not return a Class" unless state_class.is_a?(Class)

      state_class.new
    end

    define_method(:state) do
      @state
    end

    def self.included(host_class)
      host_class.instance_variable_set(:@state_definition_block, @state_definition_block)

      host_class.include(ProcessMethods)
      host_class.include(Retry)
      host_class.extend(Subscriptions)
    end
  end
end