Class: Portage::Ucp::Dispatcher

Inherits:
Object
  • Object
show all
Defined in:
lib/portage/ucp/dispatcher.rb

Overview

Accepts a UCP-shaped request (capability + action + arguments), routes it through the CapabilityRegistry to the backing Adapter method, and wraps the result as MCP's dual content/structuredContent output (see ยง5).

Instance Method Summary collapse

Constructor Details

#initialize(adapter:, registry: CapabilityRegistry.default) ⇒ Dispatcher

Returns a new instance of Dispatcher.



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# File 'lib/portage/ucp/dispatcher.rb', line 7

def initialize(adapter:, registry: CapabilityRegistry.default)
  @adapter = adapter
  @registry = registry
end

Instance Method Details

#call(capability:, action:, arguments: {}) ⇒ Object

Raises:



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# File 'lib/portage/ucp/dispatcher.rb', line 12

def call(capability:, action:, arguments: {})
  capability_definition = @registry.find(capability)
  raise UnknownCapabilityError, capability if capability_definition.nil?

  raise CapabilityNotAdvertisedError, capability unless capability_definition.advertised_for?(@adapter)

  method_name = capability_definition.actions[action]
  raise UnknownActionError, action if method_name.nil?

  Portage::Ucp::PaymentTokenGuard.validate!(arguments[:payment_token]) if arguments.key?(:payment_token)

  result = @adapter.public_send(method_name, **arguments)
  wrap(capability, result)
end