eventbus.go

// Copyright (c) 2014 - The Event Horizon authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package eventhorizon

import (
	"context"
)

// EventBus is an event handler that handles events with the correct subhandlers
// after which it publishes the event using the publisher.
type EventBus interface {
	PublishEvent(context.Context, Event) error

	// AddHandler adds a handler for an event. Panics if either the matcher
	// or handler is nil.
	AddHandler(EventMatcher, EventHandler)
}