package bus

import "context"

type Bus interface {
	Subscribe(ctx context.Context, addr Address) (<-chan Envelope, error)
	Unsubscribe(addr Address, ch <-chan Envelope)
	Publish(env Envelope) error
	Request(ctx context.Context, env Envelope) (Envelope, error)
	Reply(ctx context.Context, addr Address, h RequestHandler) chan error
}

type RequestHandler func(env Envelope) (any, error)