forked from looplab/eventhorizon
/
eventbus.go
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/
eventbus.go
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// Copyright (c) 2014 - Max Ekman <max@looplab.se>
//
// 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
// EventHandler is an interface that all handlers of events should implement.
type EventHandler interface {
// HandleEvent handles an event.
HandleEvent(Event)
}
// EventBus is an interface defining an event bus for distributing events.
type EventBus interface {
// PublishEvent publishes an event on the event bus.
PublishEvent(Event)
// AddHandler adds a handler for a specific local event.
AddHandler(EventHandler, Event)
// AddLocalHandler adds a handler for local events.
AddLocalHandler(EventHandler)
// AddGlobalHandler adds a handler for global (remote) events.
AddGlobalHandler(EventHandler)
}