Sanjana Agarwal | cb4a3db | 2016-07-14 11:42:48 -0700 | [diff] [blame] | 1 | /** |
| 2 | * Copyright 2016-present Open Networking Laboratory |
| 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; |
| 23 | import org.apache.felix.scr.annotations.ReferenceCardinality; |
| 24 | import org.apache.kafka.clients.producer.ProducerRecord; |
Sanjana Agarwal | cb4a3db | 2016-07-14 11:42:48 -0700 | [diff] [blame] | 25 | import org.onosproject.kafkaintegration.api.EventConversionService; |
| 26 | import org.onosproject.kafkaintegration.api.EventSubscriptionService; |
Shravan Ambati | 5a11e17 | 2016-07-21 15:55:28 -0700 | [diff] [blame] | 27 | import org.onosproject.kafkaintegration.api.KafkaProducerService; |
| 28 | import org.onosproject.kafkaintegration.api.KafkaConfigService; |
| 29 | import org.onosproject.kafkaintegration.api.dto.OnosEvent; |
Sanjana Agarwal | cb4a3db | 2016-07-14 11:42:48 -0700 | [diff] [blame] | 30 | import org.onosproject.net.device.DeviceEvent; |
| 31 | import org.onosproject.net.device.DeviceListener; |
| 32 | import org.onosproject.net.device.DeviceService; |
| 33 | import org.onosproject.net.link.LinkEvent; |
| 34 | import org.onosproject.net.link.LinkListener; |
| 35 | import org.onosproject.net.link.LinkService; |
Sanjana Agarwal | cb4a3db | 2016-07-14 11:42:48 -0700 | [diff] [blame] | 36 | import org.slf4j.Logger; |
| 37 | import org.slf4j.LoggerFactory; |
| 38 | |
Sanjana Agarwal | cb4a3db | 2016-07-14 11:42:48 -0700 | [diff] [blame] | 39 | import java.util.concurrent.ExecutionException; |
| 40 | import java.util.concurrent.ExecutorService; |
| 41 | |
Sanjana Agarwal | cb4a3db | 2016-07-14 11:42:48 -0700 | [diff] [blame] | 42 | import static java.util.concurrent.Executors.newSingleThreadScheduledExecutor; |
Sanjana Agarwal | cb4a3db | 2016-07-14 11:42:48 -0700 | [diff] [blame] | 43 | import static org.onlab.util.Tools.groupedThreads; |
| 44 | import static org.onosproject.kafkaintegration.api.dto.OnosEvent.Type.DEVICE; |
| 45 | import static org.onosproject.kafkaintegration.api.dto.OnosEvent.Type.LINK; |
| 46 | |
Shravan Ambati | 5a11e17 | 2016-07-21 15:55:28 -0700 | [diff] [blame] | 47 | |
Sanjana Agarwal | cb4a3db | 2016-07-14 11:42:48 -0700 | [diff] [blame] | 48 | /** |
| 49 | * Encapsulates the behavior of monitoring various ONOS events. |
| 50 | * */ |
| 51 | @Component(immediate = true) |
| 52 | public class EventMonitor { |
| 53 | private final Logger log = LoggerFactory.getLogger(getClass()); |
| 54 | |
| 55 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 56 | protected EventSubscriptionService eventSubscriptionService; |
| 57 | |
| 58 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 59 | protected EventConversionService eventConversionService; |
| 60 | |
| 61 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
Shravan Ambati | 5a11e17 | 2016-07-21 15:55:28 -0700 | [diff] [blame] | 62 | protected KafkaProducerService kafkaProducer; |
| 63 | |
| 64 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
Sanjana Agarwal | cb4a3db | 2016-07-14 11:42:48 -0700 | [diff] [blame] | 65 | protected DeviceService deviceService; |
| 66 | |
| 67 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 68 | protected LinkService linkService; |
| 69 | |
| 70 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
Shravan Ambati | 5a11e17 | 2016-07-21 15:55:28 -0700 | [diff] [blame] | 71 | protected KafkaConfigService kafkaConfigService; |
Sanjana Agarwal | cb4a3db | 2016-07-14 11:42:48 -0700 | [diff] [blame] | 72 | |
| 73 | private final DeviceListener deviceListener = new InternalDeviceListener(); |
| 74 | private final LinkListener linkListener = new InternalLinkListener(); |
| 75 | |
| 76 | protected ExecutorService eventExecutor; |
| 77 | |
Sanjana Agarwal | cb4a3db | 2016-07-14 11:42:48 -0700 | [diff] [blame] | 78 | @Activate |
Shravan Ambati | 5a11e17 | 2016-07-21 15:55:28 -0700 | [diff] [blame] | 79 | protected void activate() { |
| 80 | |
Sanjana Agarwal | cb4a3db | 2016-07-14 11:42:48 -0700 | [diff] [blame] | 81 | eventExecutor = newSingleThreadScheduledExecutor(groupedThreads("onos/onosEvents", "events-%d", log)); |
| 82 | deviceService.addListener(deviceListener); |
| 83 | linkService.addListener(linkListener); |
Shravan Ambati | 5a11e17 | 2016-07-21 15:55:28 -0700 | [diff] [blame] | 84 | |
| 85 | kafkaProducer.start(kafkaConfigService.getConfigParams()); |
Sanjana Agarwal | cb4a3db | 2016-07-14 11:42:48 -0700 | [diff] [blame] | 86 | |
| 87 | log.info("Started"); |
| 88 | } |
| 89 | |
| 90 | @Deactivate |
| 91 | protected void deactivate() { |
Sanjana Agarwal | cb4a3db | 2016-07-14 11:42:48 -0700 | [diff] [blame] | 92 | deviceService.removeListener(deviceListener); |
| 93 | linkService.removeListener(linkListener); |
Shravan Ambati | 5a11e17 | 2016-07-21 15:55:28 -0700 | [diff] [blame] | 94 | |
Sanjana Agarwal | cb4a3db | 2016-07-14 11:42:48 -0700 | [diff] [blame] | 95 | eventExecutor.shutdownNow(); |
| 96 | eventExecutor = null; |
| 97 | |
Shravan Ambati | 5a11e17 | 2016-07-21 15:55:28 -0700 | [diff] [blame] | 98 | kafkaProducer.stop(); |
| 99 | |
Sanjana Agarwal | cb4a3db | 2016-07-14 11:42:48 -0700 | [diff] [blame] | 100 | log.info("Stopped"); |
| 101 | } |
| 102 | |
Sanjana Agarwal | cb4a3db | 2016-07-14 11:42:48 -0700 | [diff] [blame] | 103 | private class InternalDeviceListener implements DeviceListener { |
| 104 | |
| 105 | @Override |
| 106 | public void event(DeviceEvent event) { |
Shravan Ambati | 5a11e17 | 2016-07-21 15:55:28 -0700 | [diff] [blame] | 107 | |
Sanjana Agarwal | cb4a3db | 2016-07-14 11:42:48 -0700 | [diff] [blame] | 108 | if (!eventSubscriptionService.getEventSubscribers(DEVICE).isEmpty()) { |
Shravan Ambati | 5a11e17 | 2016-07-21 15:55:28 -0700 | [diff] [blame] | 109 | OnosEvent onosEvent = eventConversionService.convertEvent(event); |
Sanjana Agarwal | cb4a3db | 2016-07-14 11:42:48 -0700 | [diff] [blame] | 110 | eventExecutor.execute(() -> { |
| 111 | try { |
Shravan Ambati | 5a11e17 | 2016-07-21 15:55:28 -0700 | [diff] [blame] | 112 | kafkaProducer.send(new ProducerRecord<>(DEVICE.toString(), |
| 113 | onosEvent.subject().toByteArray())).get(); |
| 114 | |
| 115 | log.debug("Event Type - {}, Subject {} sent successfully.", |
| 116 | DEVICE, onosEvent.subject()); |
| 117 | |
| 118 | } catch (InterruptedException e1) { |
Sanjana Agarwal | cb4a3db | 2016-07-14 11:42:48 -0700 | [diff] [blame] | 119 | Thread.currentThread().interrupt(); |
Shravan Ambati | 5a11e17 | 2016-07-21 15:55:28 -0700 | [diff] [blame] | 120 | } catch (ExecutionException e2) { |
| 121 | log.error("Exception thrown {}", e2); |
Sanjana Agarwal | cb4a3db | 2016-07-14 11:42:48 -0700 | [diff] [blame] | 122 | } |
| 123 | }); |
| 124 | } else { |
| 125 | log.debug("No device listeners"); |
| 126 | } |
| 127 | } |
| 128 | } |
| 129 | |
| 130 | private class InternalLinkListener implements LinkListener { |
| 131 | |
| 132 | @Override |
| 133 | public void event(LinkEvent event) { |
Shravan Ambati | 5a11e17 | 2016-07-21 15:55:28 -0700 | [diff] [blame] | 134 | |
Sanjana Agarwal | cb4a3db | 2016-07-14 11:42:48 -0700 | [diff] [blame] | 135 | if (!eventSubscriptionService.getEventSubscribers(LINK).isEmpty()) { |
Shravan Ambati | 5a11e17 | 2016-07-21 15:55:28 -0700 | [diff] [blame] | 136 | OnosEvent onosEvent = eventConversionService.convertEvent(event); |
Sanjana Agarwal | cb4a3db | 2016-07-14 11:42:48 -0700 | [diff] [blame] | 137 | eventExecutor.execute(() -> { |
| 138 | try { |
Shravan Ambati | 5a11e17 | 2016-07-21 15:55:28 -0700 | [diff] [blame] | 139 | kafkaProducer.send(new ProducerRecord<>(LINK.toString(), |
| 140 | onosEvent.subject().toByteArray())).get(); |
| 141 | |
| 142 | log.debug("Event Type - {}, Subject {} sent successfully.", |
| 143 | LINK, onosEvent.subject()); |
| 144 | |
| 145 | } catch (InterruptedException e1) { |
Sanjana Agarwal | cb4a3db | 2016-07-14 11:42:48 -0700 | [diff] [blame] | 146 | Thread.currentThread().interrupt(); |
Shravan Ambati | 5a11e17 | 2016-07-21 15:55:28 -0700 | [diff] [blame] | 147 | } catch (ExecutionException e2) { |
| 148 | log.error("Exception thrown {}", e2); |
Sanjana Agarwal | cb4a3db | 2016-07-14 11:42:48 -0700 | [diff] [blame] | 149 | } |
| 150 | }); |
| 151 | } else { |
| 152 | log.debug("No link listeners"); |
| 153 | } |
| 154 | } |
| 155 | } |
| 156 | } |