Class: Phronomy::MultiAgent::FanOutSessionBuilder

Inherits:
Object
  • Object
show all
Defined in:
lib/phronomy/multi_agent/fan_out_session_builder.rb

Overview

Builds and registers a fan-out coordination FSMSession.

Constant Summary collapse

AUTO_STATE_SET = 
{idle: true}.freeze
DECLARED_STATES = 
%i[idle running completed failed timed_out cancelled].freeze
WAIT_STATES = 
[].freeze

Class Method Summary collapse

Class Method Details

.start(invocation:, timeout: nil, cancellation_token: nil, runtime: Phronomy::Runtime.instance) ⇒ Object 



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# File 'lib/phronomy/multi_agent/fan_out_session_builder.rb', line 13

def self.start(
  invocation:,
  timeout: nil,
  cancellation_token: nil,
  runtime: Phronomy::Runtime.instance
)
  result = Phronomy::Task.deferred(name: "fan-out:#{invocation.id}")

  if cancellation_token&.cancelled?
    result.fail(Phronomy::CancellationError.new("fan-out cancelled"))
    return result
  end

  source = Phronomy::Task.deferred(name: "fan-out-source:#{invocation.id}")
  source.on_complete do |context, error|
    if error
      result.fail(error)
    elsif context.error
      result.fail(context.error)
    else
      result.complete(context.results)
    end
  end

  session = build(invocation: invocation, runtime: runtime)
  runtime.event_loop.register(session, completion: source)

  if timeout
    runtime.timer_queue.schedule(seconds: timeout) do
      runtime.event_loop.post_to_session(
        Phronomy::Event.new(
          type: :timeout,
          target_id: invocation.id,
          payload: {message: "dispatch_parallel timed out after #{timeout}s"}
        )
      )
    end
  end

  cancellation_token&.on_cancel do
    runtime.event_loop.post_to_session(
      Phronomy::Event.new(type: :cancel, target_id: invocation.id, payload: nil)
    )
  end

  result
rescue => error
  result ||= Phronomy::Task.deferred(name: "fan-out:registration")
  result.fail(error)
  result
end