Sanjana Agarwal | cb4a3db | 2016-07-14 11:42:48 -0700 | [diff] [blame] | 1 | /** |
Brian O'Connor | a09fe5b | 2017-08-03 21:12:30 -0700 | [diff] [blame] | 2 | * Copyright 2016-present Open Networking Foundation |
Sanjana Agarwal | cb4a3db | 2016-07-14 11:42:48 -0700 | [diff] [blame] | 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package org.onosproject.kafkaintegration.kafka; |
| 18 | |
| 19 | import org.apache.felix.scr.annotations.Activate; |
| 20 | import org.apache.felix.scr.annotations.Component; |
| 21 | import org.apache.felix.scr.annotations.Deactivate; |
Sanjana Agarwal | cb4a3db | 2016-07-14 11:42:48 -0700 | [diff] [blame] | 22 | import org.apache.felix.scr.annotations.Reference; |
Shravan Ambati | a4875d8 | 2017-01-09 13:06:51 -0800 | [diff] [blame] | 23 | import org.onosproject.cluster.ClusterService; |
| 24 | import org.onosproject.cluster.NodeId; |
Sanjana Agarwal | cb4a3db | 2016-07-14 11:42:48 -0700 | [diff] [blame] | 25 | import org.apache.felix.scr.annotations.ReferenceCardinality; |
Shravan Ambati | a4875d8 | 2017-01-09 13:06:51 -0800 | [diff] [blame] | 26 | import org.onosproject.cluster.LeadershipService; |
Sanjana Agarwal | cb4a3db | 2016-07-14 11:42:48 -0700 | [diff] [blame] | 27 | import org.onosproject.kafkaintegration.api.EventConversionService; |
| 28 | import org.onosproject.kafkaintegration.api.EventSubscriptionService; |
Shravan Ambati | a4875d8 | 2017-01-09 13:06:51 -0800 | [diff] [blame] | 29 | import org.onosproject.kafkaintegration.api.KafkaEventStorageService; |
Shravan Ambati | 5a11e17 | 2016-07-21 15:55:28 -0700 | [diff] [blame] | 30 | import org.onosproject.kafkaintegration.api.dto.OnosEvent; |
Sanjana Agarwal | cb4a3db | 2016-07-14 11:42:48 -0700 | [diff] [blame] | 31 | import org.onosproject.net.device.DeviceEvent; |
| 32 | import org.onosproject.net.device.DeviceListener; |
| 33 | import org.onosproject.net.device.DeviceService; |
| 34 | import org.onosproject.net.link.LinkEvent; |
| 35 | import org.onosproject.net.link.LinkListener; |
| 36 | import org.onosproject.net.link.LinkService; |
Sanjana Agarwal | cb4a3db | 2016-07-14 11:42:48 -0700 | [diff] [blame] | 37 | import org.slf4j.Logger; |
| 38 | import org.slf4j.LoggerFactory; |
| 39 | |
Shravan Ambati | a4875d8 | 2017-01-09 13:06:51 -0800 | [diff] [blame] | 40 | import java.util.Objects; |
Sanjana Agarwal | cb4a3db | 2016-07-14 11:42:48 -0700 | [diff] [blame] | 41 | import java.util.concurrent.ExecutorService; |
| 42 | |
Sanjana Agarwal | cb4a3db | 2016-07-14 11:42:48 -0700 | [diff] [blame] | 43 | import static java.util.concurrent.Executors.newSingleThreadScheduledExecutor; |
Sanjana Agarwal | cb4a3db | 2016-07-14 11:42:48 -0700 | [diff] [blame] | 44 | import static org.onlab.util.Tools.groupedThreads; |
| 45 | import static org.onosproject.kafkaintegration.api.dto.OnosEvent.Type.DEVICE; |
| 46 | import static org.onosproject.kafkaintegration.api.dto.OnosEvent.Type.LINK; |
| 47 | |
Shravan Ambati | 5a11e17 | 2016-07-21 15:55:28 -0700 | [diff] [blame] | 48 | |
Sanjana Agarwal | cb4a3db | 2016-07-14 11:42:48 -0700 | [diff] [blame] | 49 | /** |
| 50 | * Encapsulates the behavior of monitoring various ONOS events. |
| 51 | * */ |
| 52 | @Component(immediate = true) |
Shravan Ambati | 4c6295e | 2016-12-20 14:53:06 -0800 | [diff] [blame] | 53 | public class EventListener { |
Sanjana Agarwal | cb4a3db | 2016-07-14 11:42:48 -0700 | [diff] [blame] | 54 | private final Logger log = LoggerFactory.getLogger(getClass()); |
| 55 | |
| 56 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 57 | protected EventSubscriptionService eventSubscriptionService; |
| 58 | |
| 59 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 60 | protected EventConversionService eventConversionService; |
| 61 | |
| 62 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 63 | protected DeviceService deviceService; |
| 64 | |
| 65 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 66 | protected LinkService linkService; |
| 67 | |
| 68 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
Shravan Ambati | a4875d8 | 2017-01-09 13:06:51 -0800 | [diff] [blame] | 69 | protected KafkaEventStorageService kafkaStoreService; |
| 70 | |
| 71 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 72 | protected LeadershipService leadershipService; |
| 73 | |
| 74 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 75 | protected ClusterService clusterService; |
Sanjana Agarwal | cb4a3db | 2016-07-14 11:42:48 -0700 | [diff] [blame] | 76 | |
| 77 | private final DeviceListener deviceListener = new InternalDeviceListener(); |
| 78 | private final LinkListener linkListener = new InternalLinkListener(); |
| 79 | |
| 80 | protected ExecutorService eventExecutor; |
| 81 | |
Shravan Ambati | a4875d8 | 2017-01-09 13:06:51 -0800 | [diff] [blame] | 82 | private static final String PUBLISHER_TOPIC = "WORK_QUEUE_PUBLISHER"; |
| 83 | |
| 84 | private NodeId localNodeId; |
| 85 | |
Sanjana Agarwal | cb4a3db | 2016-07-14 11:42:48 -0700 | [diff] [blame] | 86 | @Activate |
Shravan Ambati | 5a11e17 | 2016-07-21 15:55:28 -0700 | [diff] [blame] | 87 | protected void activate() { |
| 88 | |
Sanjana Agarwal | cb4a3db | 2016-07-14 11:42:48 -0700 | [diff] [blame] | 89 | eventExecutor = newSingleThreadScheduledExecutor(groupedThreads("onos/onosEvents", "events-%d", log)); |
| 90 | deviceService.addListener(deviceListener); |
| 91 | linkService.addListener(linkListener); |
Shravan Ambati | 5a11e17 | 2016-07-21 15:55:28 -0700 | [diff] [blame] | 92 | |
Shravan Ambati | a4875d8 | 2017-01-09 13:06:51 -0800 | [diff] [blame] | 93 | localNodeId = clusterService.getLocalNode().id(); |
| 94 | |
| 95 | leadershipService.runForLeadership(PUBLISHER_TOPIC); |
Sanjana Agarwal | cb4a3db | 2016-07-14 11:42:48 -0700 | [diff] [blame] | 96 | |
| 97 | log.info("Started"); |
| 98 | } |
| 99 | |
| 100 | @Deactivate |
| 101 | protected void deactivate() { |
Sanjana Agarwal | cb4a3db | 2016-07-14 11:42:48 -0700 | [diff] [blame] | 102 | deviceService.removeListener(deviceListener); |
| 103 | linkService.removeListener(linkListener); |
Shravan Ambati | 5a11e17 | 2016-07-21 15:55:28 -0700 | [diff] [blame] | 104 | |
Sanjana Agarwal | cb4a3db | 2016-07-14 11:42:48 -0700 | [diff] [blame] | 105 | eventExecutor.shutdownNow(); |
| 106 | eventExecutor = null; |
| 107 | |
| 108 | log.info("Stopped"); |
| 109 | } |
| 110 | |
Sanjana Agarwal | cb4a3db | 2016-07-14 11:42:48 -0700 | [diff] [blame] | 111 | private class InternalDeviceListener implements DeviceListener { |
| 112 | |
| 113 | @Override |
| 114 | public void event(DeviceEvent event) { |
Shravan Ambati | 5a11e17 | 2016-07-21 15:55:28 -0700 | [diff] [blame] | 115 | |
Shravan Ambati | a4875d8 | 2017-01-09 13:06:51 -0800 | [diff] [blame] | 116 | // do not allow to proceed without leadership |
| 117 | NodeId leaderNodeId = leadershipService.getLeader(PUBLISHER_TOPIC); |
| 118 | if (!Objects.equals(localNodeId, leaderNodeId)) { |
| 119 | log.debug("Not a Leader, cannot publish!"); |
| 120 | return; |
| 121 | } |
| 122 | |
Sanjana Agarwal | cb4a3db | 2016-07-14 11:42:48 -0700 | [diff] [blame] | 123 | if (!eventSubscriptionService.getEventSubscribers(DEVICE).isEmpty()) { |
Shravan Ambati | 5a11e17 | 2016-07-21 15:55:28 -0700 | [diff] [blame] | 124 | OnosEvent onosEvent = eventConversionService.convertEvent(event); |
Sanjana Agarwal | cb4a3db | 2016-07-14 11:42:48 -0700 | [diff] [blame] | 125 | eventExecutor.execute(() -> { |
Shravan Ambati | a4875d8 | 2017-01-09 13:06:51 -0800 | [diff] [blame] | 126 | kafkaStoreService.publishEvent(onosEvent); |
Sanjana Agarwal | cb4a3db | 2016-07-14 11:42:48 -0700 | [diff] [blame] | 127 | }); |
Shravan Ambati | a4875d8 | 2017-01-09 13:06:51 -0800 | [diff] [blame] | 128 | log.debug("Pushed event {} to kafka storage", onosEvent); |
Sanjana Agarwal | cb4a3db | 2016-07-14 11:42:48 -0700 | [diff] [blame] | 129 | } |
Shravan Ambati | a4875d8 | 2017-01-09 13:06:51 -0800 | [diff] [blame] | 130 | |
Sanjana Agarwal | cb4a3db | 2016-07-14 11:42:48 -0700 | [diff] [blame] | 131 | } |
| 132 | } |
| 133 | |
| 134 | private class InternalLinkListener implements LinkListener { |
| 135 | |
| 136 | @Override |
| 137 | public void event(LinkEvent event) { |
Shravan Ambati | 5a11e17 | 2016-07-21 15:55:28 -0700 | [diff] [blame] | 138 | |
Shravan Ambati | a4875d8 | 2017-01-09 13:06:51 -0800 | [diff] [blame] | 139 | // do not allow to proceed without leadership |
| 140 | NodeId leaderNodeId = leadershipService.getLeader(PUBLISHER_TOPIC); |
| 141 | if (!Objects.equals(localNodeId, leaderNodeId)) { |
| 142 | log.debug("Not a Leader, cannot publish!"); |
| 143 | return; |
| 144 | } |
| 145 | |
Sanjana Agarwal | cb4a3db | 2016-07-14 11:42:48 -0700 | [diff] [blame] | 146 | if (!eventSubscriptionService.getEventSubscribers(LINK).isEmpty()) { |
Shravan Ambati | 5a11e17 | 2016-07-21 15:55:28 -0700 | [diff] [blame] | 147 | OnosEvent onosEvent = eventConversionService.convertEvent(event); |
Sanjana Agarwal | cb4a3db | 2016-07-14 11:42:48 -0700 | [diff] [blame] | 148 | eventExecutor.execute(() -> { |
Shravan Ambati | a4875d8 | 2017-01-09 13:06:51 -0800 | [diff] [blame] | 149 | kafkaStoreService.publishEvent(onosEvent); |
Sanjana Agarwal | cb4a3db | 2016-07-14 11:42:48 -0700 | [diff] [blame] | 150 | }); |
Shravan Ambati | a4875d8 | 2017-01-09 13:06:51 -0800 | [diff] [blame] | 151 | log.debug("Pushed event {} to kafka storage", onosEvent); |
Sanjana Agarwal | cb4a3db | 2016-07-14 11:42:48 -0700 | [diff] [blame] | 152 | } |
Shravan Ambati | a4875d8 | 2017-01-09 13:06:51 -0800 | [diff] [blame] | 153 | |
Sanjana Agarwal | cb4a3db | 2016-07-14 11:42:48 -0700 | [diff] [blame] | 154 | } |
| 155 | } |
Shravan Ambati | a4875d8 | 2017-01-09 13:06:51 -0800 | [diff] [blame] | 156 | } |