| /** |
| * Copyright 2016 Open Networking Laboratory |
| * 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 org.onosproject.kafkaintegration.impl; |
| |
| import org.onosproject.event.AbstractListenerManager; |
| import org.onosproject.kafkaintegration.api.ExportableEventListener; |
| import org.onosproject.kafkaintegration.api.dto.OnosEvent; |
| import org.onosproject.kafkaintegration.api.dto.OnosEvent.Type; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import com.google.protobuf.GeneratedMessage; |
| |
| /** |
| * Dispatch ONOS Events to all interested Listeners. |
| * |
| */ |
| public final class Dispatcher |
| extends AbstractListenerManager<OnosEvent, ExportableEventListener> { |
| |
| private final Logger log = LoggerFactory.getLogger(getClass()); |
| |
| // Exists to defeat instantiation |
| private Dispatcher() { |
| } |
| |
| private static class SingletonHolder { |
| private static final Dispatcher INSTANCE = new Dispatcher(); |
| } |
| |
| /** |
| * Returns a static reference to the Listener Factory. |
| * |
| * @return singleton object |
| */ |
| public static Dispatcher getInstance() { |
| return SingletonHolder.INSTANCE; |
| } |
| |
| /** |
| * Publish the ONOS Event to all listeners. |
| * |
| * @param eventType the ONOS eventtype |
| * @param message generated Protocol buffer message from ONOS event data |
| */ |
| public void publish(Type eventType, GeneratedMessage message) { |
| log.debug("Dispatching ONOS Event {}", eventType); |
| post(new OnosEvent(eventType, message)); |
| } |
| } |