Shravan Ambati | bb6b445 | 2016-05-04 13:25:28 -0700 | [diff] [blame] | 1 | /** |
| 2 | * Copyright 2016 Open Networking Laboratory |
| 3 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 4 | * you may not use this file except in compliance with the License. |
| 5 | * You may obtain a copy of the License at |
| 6 | |
| 7 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 8 | |
| 9 | * Unless required by applicable law or agreed to in writing, software |
| 10 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 11 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 12 | * See the License for the specific language governing permissions and |
| 13 | * limitations under the License. |
| 14 | */ |
| 15 | package org.onosproject.kafkaintegration.impl; |
| 16 | |
| 17 | import org.onosproject.event.AbstractListenerManager; |
| 18 | import org.onosproject.kafkaintegration.api.ExportableEventListener; |
Sanjana Agarwal | cb4a3db | 2016-07-14 11:42:48 -0700 | [diff] [blame] | 19 | import org.onosproject.kafkaintegration.api.KafkaPublisherService; |
Shravan Ambati | bb6b445 | 2016-05-04 13:25:28 -0700 | [diff] [blame] | 20 | import org.onosproject.kafkaintegration.api.dto.OnosEvent; |
| 21 | import org.onosproject.kafkaintegration.api.dto.OnosEvent.Type; |
| 22 | import org.slf4j.Logger; |
| 23 | import org.slf4j.LoggerFactory; |
| 24 | |
| 25 | import com.google.protobuf.GeneratedMessage; |
| 26 | |
| 27 | /** |
| 28 | * Dispatch ONOS Events to all interested Listeners. |
| 29 | * |
| 30 | */ |
Sanjana Agarwal | cb4a3db | 2016-07-14 11:42:48 -0700 | [diff] [blame] | 31 | |
| 32 | public final class KafkaPublisherManager |
| 33 | extends AbstractListenerManager<OnosEvent, ExportableEventListener> implements KafkaPublisherService { |
Shravan Ambati | bb6b445 | 2016-05-04 13:25:28 -0700 | [diff] [blame] | 34 | |
| 35 | private final Logger log = LoggerFactory.getLogger(getClass()); |
| 36 | |
| 37 | // Exists to defeat instantiation |
Sanjana Agarwal | cb4a3db | 2016-07-14 11:42:48 -0700 | [diff] [blame] | 38 | private KafkaPublisherManager() { |
Shravan Ambati | bb6b445 | 2016-05-04 13:25:28 -0700 | [diff] [blame] | 39 | } |
| 40 | |
Sanjana Agarwal | cb4a3db | 2016-07-14 11:42:48 -0700 | [diff] [blame] | 41 | //TODO: If possible, get rid of Singleton implementation. |
Shravan Ambati | bb6b445 | 2016-05-04 13:25:28 -0700 | [diff] [blame] | 42 | private static class SingletonHolder { |
Sanjana Agarwal | cb4a3db | 2016-07-14 11:42:48 -0700 | [diff] [blame] | 43 | private static final KafkaPublisherManager INSTANCE = new KafkaPublisherManager(); |
Shravan Ambati | bb6b445 | 2016-05-04 13:25:28 -0700 | [diff] [blame] | 44 | } |
| 45 | |
| 46 | /** |
| 47 | * Returns a static reference to the Listener Factory. |
| 48 | * |
| 49 | * @return singleton object |
| 50 | */ |
Sanjana Agarwal | cb4a3db | 2016-07-14 11:42:48 -0700 | [diff] [blame] | 51 | public static KafkaPublisherManager getInstance() { |
Shravan Ambati | bb6b445 | 2016-05-04 13:25:28 -0700 | [diff] [blame] | 52 | return SingletonHolder.INSTANCE; |
| 53 | } |
| 54 | |
Sanjana Agarwal | cb4a3db | 2016-07-14 11:42:48 -0700 | [diff] [blame] | 55 | @Override |
Shravan Ambati | bb6b445 | 2016-05-04 13:25:28 -0700 | [diff] [blame] | 56 | public void publish(Type eventType, GeneratedMessage message) { |
| 57 | log.debug("Dispatching ONOS Event {}", eventType); |
| 58 | post(new OnosEvent(eventType, message)); |
| 59 | } |
| 60 | } |