event

func EventListenerHandler ¶

func EventListenerHandler(
	_ context.Context,
	invocation sdk.Invocation,
) (sdk.Result, error)

EventListenerHandler contributes one ordered typed event listener.

func EventTopicHandler ¶

func EventTopicHandler(
	_ context.Context,
	invocation sdk.Invocation,
) (sdk.Result, error)

EventTopicHandler contributes a typed event topic provider.

func Listener ¶

func Listener() sdk.Definition

Listener marks a provider-owned method as a typed event listener.

Spice matches the method payload to an exact topic payload type and orders listeners by order, module, and symbol identity. The generated invocation propagates context and errors without a global event bus.

// @import { Listener } from "github.com/spice-framework/spice/annotation/event"
// @Listener(order=10)

func Topic ¶

func Topic() sdk.Definition

Topic marks a provider function that declares one typed event topic.

The topic's exact payload type and ownership come from the Go signature and application module. Generated publishing remains explicit and observable.

// @import { Topic } from "github.com/spice-framework/spice/annotation/event"
// @Topic
func OrderChangedTopic() event.Topic[OrderChanged]