Thomas Vachuska | 781d18b | 2014-10-27 10:31:25 -0700 | [diff] [blame] | 1 | /* |
Thomas Vachuska | 4f1a60c | 2014-10-28 13:39:07 -0700 | [diff] [blame] | 2 | * Copyright 2014 Open Networking Laboratory |
Thomas Vachuska | 781d18b | 2014-10-27 10:31:25 -0700 | [diff] [blame] | 3 | * |
Thomas Vachuska | 4f1a60c | 2014-10-28 13:39:07 -0700 | [diff] [blame] | 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 |
Thomas Vachuska | 781d18b | 2014-10-27 10:31:25 -0700 | [diff] [blame] | 7 | * |
Thomas Vachuska | 4f1a60c | 2014-10-28 13:39:07 -0700 | [diff] [blame] | 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. |
Thomas Vachuska | 781d18b | 2014-10-27 10:31:25 -0700 | [diff] [blame] | 15 | */ |
tom | 0755a36 | 2014-09-24 11:54:43 -0700 | [diff] [blame] | 16 | package org.onlab.onos.foo; |
| 17 | |
Madan Jampani | 12390c1 | 2014-11-12 00:35:56 -0800 | [diff] [blame^] | 18 | import static java.util.concurrent.Executors.newScheduledThreadPool; |
| 19 | import static org.onlab.util.Tools.namedThreads; |
| 20 | import static org.slf4j.LoggerFactory.getLogger; |
| 21 | |
Yuta HIGUCHI | 361664e | 2014-11-06 17:28:47 -0800 | [diff] [blame] | 22 | import java.nio.ByteBuffer; |
| 23 | import java.util.concurrent.ScheduledExecutorService; |
Madan Jampani | 12390c1 | 2014-11-12 00:35:56 -0800 | [diff] [blame^] | 24 | import java.util.concurrent.TimeUnit; |
Yuta HIGUCHI | 361664e | 2014-11-06 17:28:47 -0800 | [diff] [blame] | 25 | |
tom | 0755a36 | 2014-09-24 11:54:43 -0700 | [diff] [blame] | 26 | import org.apache.felix.scr.annotations.Activate; |
| 27 | import org.apache.felix.scr.annotations.Component; |
| 28 | import org.apache.felix.scr.annotations.Deactivate; |
| 29 | import org.apache.felix.scr.annotations.Reference; |
| 30 | import org.apache.felix.scr.annotations.ReferenceCardinality; |
| 31 | import org.onlab.onos.cluster.ClusterEvent; |
| 32 | import org.onlab.onos.cluster.ClusterEventListener; |
| 33 | import org.onlab.onos.cluster.ClusterService; |
Yuta HIGUCHI | 0c6e184 | 2014-11-05 22:34:23 -0800 | [diff] [blame] | 34 | import org.onlab.onos.cluster.NodeId; |
| 35 | import org.onlab.onos.mastership.MastershipEvent; |
| 36 | import org.onlab.onos.mastership.MastershipListener; |
| 37 | import org.onlab.onos.mastership.MastershipService; |
tom | 0768a02 | 2014-09-24 16:16:16 -0700 | [diff] [blame] | 38 | import org.onlab.onos.net.device.DeviceEvent; |
| 39 | import org.onlab.onos.net.device.DeviceListener; |
| 40 | import org.onlab.onos.net.device.DeviceService; |
tom | 4e96904 | 2014-10-07 00:47:30 -0700 | [diff] [blame] | 41 | import org.onlab.onos.net.intent.IntentEvent; |
| 42 | import org.onlab.onos.net.intent.IntentListener; |
| 43 | import org.onlab.onos.net.intent.IntentService; |
Yuta HIGUCHI | 361664e | 2014-11-06 17:28:47 -0800 | [diff] [blame] | 44 | import org.onlab.onos.store.service.DatabaseAdminService; |
Yuta HIGUCHI | 361664e | 2014-11-06 17:28:47 -0800 | [diff] [blame] | 45 | import org.onlab.onos.store.service.DatabaseService; |
Madan Jampani | 12390c1 | 2014-11-12 00:35:56 -0800 | [diff] [blame^] | 46 | import org.onlab.onos.store.service.VersionedValue; |
tom | 0755a36 | 2014-09-24 11:54:43 -0700 | [diff] [blame] | 47 | import org.slf4j.Logger; |
| 48 | |
tom | 0755a36 | 2014-09-24 11:54:43 -0700 | [diff] [blame] | 49 | /** |
| 50 | * Playground app component. |
| 51 | */ |
| 52 | @Component(immediate = true) |
| 53 | public class FooComponent { |
| 54 | |
| 55 | private final Logger log = getLogger(getClass()); |
| 56 | |
| 57 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 58 | protected ClusterService clusterService; |
| 59 | |
tom | 0768a02 | 2014-09-24 16:16:16 -0700 | [diff] [blame] | 60 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 61 | protected DeviceService deviceService; |
| 62 | |
tom | 4e96904 | 2014-10-07 00:47:30 -0700 | [diff] [blame] | 63 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 64 | protected IntentService intentService; |
| 65 | |
Yuta HIGUCHI | 0c6e184 | 2014-11-05 22:34:23 -0800 | [diff] [blame] | 66 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 67 | protected MastershipService mastershipService; |
| 68 | |
Yuta HIGUCHI | 361664e | 2014-11-06 17:28:47 -0800 | [diff] [blame] | 69 | @Reference(cardinality = ReferenceCardinality.OPTIONAL_UNARY) |
| 70 | protected DatabaseAdminService dbAdminService; |
| 71 | |
| 72 | @Reference(cardinality = ReferenceCardinality.OPTIONAL_UNARY) |
| 73 | protected DatabaseService dbService; |
| 74 | |
tom | 0768a02 | 2014-09-24 16:16:16 -0700 | [diff] [blame] | 75 | private final ClusterEventListener clusterListener = new InnerClusterListener(); |
| 76 | private final DeviceListener deviceListener = new InnerDeviceListener(); |
tom | 4e96904 | 2014-10-07 00:47:30 -0700 | [diff] [blame] | 77 | private final IntentListener intentListener = new InnerIntentListener(); |
Yuta HIGUCHI | 0c6e184 | 2014-11-05 22:34:23 -0800 | [diff] [blame] | 78 | private final MastershipListener mastershipListener = new InnerMastershipListener(); |
tom | 0755a36 | 2014-09-24 11:54:43 -0700 | [diff] [blame] | 79 | |
Yuta HIGUCHI | 361664e | 2014-11-06 17:28:47 -0800 | [diff] [blame] | 80 | private ScheduledExecutorService executor; |
| 81 | |
tom | 0755a36 | 2014-09-24 11:54:43 -0700 | [diff] [blame] | 82 | @Activate |
| 83 | public void activate() { |
Yuta HIGUCHI | 361664e | 2014-11-06 17:28:47 -0800 | [diff] [blame] | 84 | executor = newScheduledThreadPool(4, namedThreads("foo-executor-%d")); |
| 85 | |
tom | 0755a36 | 2014-09-24 11:54:43 -0700 | [diff] [blame] | 86 | clusterService.addListener(clusterListener); |
tom | 0768a02 | 2014-09-24 16:16:16 -0700 | [diff] [blame] | 87 | deviceService.addListener(deviceListener); |
tom | 4e96904 | 2014-10-07 00:47:30 -0700 | [diff] [blame] | 88 | intentService.addListener(intentListener); |
Yuta HIGUCHI | 0c6e184 | 2014-11-05 22:34:23 -0800 | [diff] [blame] | 89 | mastershipService.addListener(mastershipListener); |
Yuta HIGUCHI | 361664e | 2014-11-06 17:28:47 -0800 | [diff] [blame] | 90 | |
| 91 | if (dbService == null || dbAdminService == null) { |
| 92 | log.info("Couldn't find DB service"); |
| 93 | } else { |
| 94 | log.info("Found DB service"); |
Madan Jampani | 12390c1 | 2014-11-12 00:35:56 -0800 | [diff] [blame^] | 95 | longIncrementor(); |
| 96 | executor.scheduleAtFixedRate(new LongIncrementor(), 1, 10, TimeUnit.SECONDS); |
| 97 | executor.scheduleAtFixedRate(new LongIncrementor(), 1, 10, TimeUnit.SECONDS); |
Yuta HIGUCHI | 361664e | 2014-11-06 17:28:47 -0800 | [diff] [blame] | 98 | } |
tom | 0755a36 | 2014-09-24 11:54:43 -0700 | [diff] [blame] | 99 | log.info("Started"); |
| 100 | } |
| 101 | |
| 102 | @Deactivate |
| 103 | public void deactivate() { |
Yuta HIGUCHI | 361664e | 2014-11-06 17:28:47 -0800 | [diff] [blame] | 104 | executor.shutdown(); |
tom | 0755a36 | 2014-09-24 11:54:43 -0700 | [diff] [blame] | 105 | clusterService.removeListener(clusterListener); |
tom | 0768a02 | 2014-09-24 16:16:16 -0700 | [diff] [blame] | 106 | deviceService.removeListener(deviceListener); |
tom | 4e96904 | 2014-10-07 00:47:30 -0700 | [diff] [blame] | 107 | intentService.removeListener(intentListener); |
Yuta HIGUCHI | 0c6e184 | 2014-11-05 22:34:23 -0800 | [diff] [blame] | 108 | mastershipService.removeListener(mastershipListener); |
tom | 0755a36 | 2014-09-24 11:54:43 -0700 | [diff] [blame] | 109 | log.info("Stopped"); |
| 110 | } |
| 111 | |
| 112 | private class InnerClusterListener implements ClusterEventListener { |
| 113 | @Override |
| 114 | public void event(ClusterEvent event) { |
| 115 | log.info("WOOOOT! {}", event); |
| 116 | } |
| 117 | } |
tom | 0768a02 | 2014-09-24 16:16:16 -0700 | [diff] [blame] | 118 | |
| 119 | private class InnerDeviceListener implements DeviceListener { |
| 120 | @Override |
| 121 | public void event(DeviceEvent event) { |
| 122 | log.info("YEEEEHAAAAW! {}", event); |
| 123 | } |
| 124 | } |
tom | 4e96904 | 2014-10-07 00:47:30 -0700 | [diff] [blame] | 125 | |
| 126 | private class InnerIntentListener implements IntentListener { |
| 127 | @Override |
| 128 | public void event(IntentEvent event) { |
| 129 | String message; |
| 130 | if (event.type() == IntentEvent.Type.SUBMITTED) { |
| 131 | message = "WOW! It looks like someone has some intentions: {}"; |
| 132 | } else if (event.type() == IntentEvent.Type.INSTALLED) { |
| 133 | message = "AWESOME! So far things are going great: {}"; |
| 134 | } else if (event.type() == IntentEvent.Type.WITHDRAWN) { |
| 135 | message = "HMMM! Ambitions are fading apparently: {}"; |
| 136 | } else { |
| 137 | message = "CRAP!!! Things are not turning out as intended: {}"; |
| 138 | } |
| 139 | log.info(message, event.subject()); |
| 140 | } |
| 141 | } |
Yuta HIGUCHI | 0c6e184 | 2014-11-05 22:34:23 -0800 | [diff] [blame] | 142 | |
| 143 | private class InnerMastershipListener implements MastershipListener { |
| 144 | @Override |
| 145 | public void event(MastershipEvent event) { |
| 146 | final NodeId myId = clusterService.getLocalNode().id(); |
| 147 | if (myId.equals(event.roleInfo().master())) { |
| 148 | log.info("I have control/I wish you luck {}", event); |
| 149 | } else { |
| 150 | log.info("you have control {}", event); |
| 151 | } |
| 152 | } |
| 153 | } |
Yuta HIGUCHI | 361664e | 2014-11-06 17:28:47 -0800 | [diff] [blame] | 154 | |
| 155 | private void longIncrementor() { |
| 156 | try { |
| 157 | final String someTable = "admin"; |
| 158 | final String someKey = "long"; |
| 159 | |
| 160 | dbAdminService.createTable(someTable); |
| 161 | |
Madan Jampani | 12390c1 | 2014-11-12 00:35:56 -0800 | [diff] [blame^] | 162 | VersionedValue vv = dbService.get(someTable, someKey); |
| 163 | if (vv == null) { |
Yuta HIGUCHI | 361664e | 2014-11-06 17:28:47 -0800 | [diff] [blame] | 164 | ByteBuffer zero = ByteBuffer.allocate(Long.BYTES).putLong(0); |
Madan Jampani | 12390c1 | 2014-11-12 00:35:56 -0800 | [diff] [blame^] | 165 | if (dbService.putIfAbsent(someTable, someKey, zero.array())) { |
| 166 | log.info("Wrote initial value"); |
| 167 | vv = dbService.get(someTable, someKey); |
| 168 | } else { |
| 169 | log.info("Concurrent write detected."); |
| 170 | // concurrent write detected, read and fall through |
| 171 | vv = dbService.get(someTable, someKey); |
| 172 | if (vv == null) { |
| 173 | log.error("Shouldn't reach here"); |
| 174 | } |
Yuta HIGUCHI | 361664e | 2014-11-06 17:28:47 -0800 | [diff] [blame] | 175 | } |
| 176 | } |
| 177 | int retry = 5; |
| 178 | do { |
Madan Jampani | 12390c1 | 2014-11-12 00:35:56 -0800 | [diff] [blame^] | 179 | ByteBuffer prev = ByteBuffer.wrap(vv.value()); |
Yuta HIGUCHI | 361664e | 2014-11-06 17:28:47 -0800 | [diff] [blame] | 180 | long next = prev.getLong() + 1; |
| 181 | byte[] newValue = ByteBuffer.allocate(Long.BYTES).putLong(next).array(); |
Madan Jampani | 12390c1 | 2014-11-12 00:35:56 -0800 | [diff] [blame^] | 182 | if (dbService.putIfVersionMatches(someTable, someKey, newValue, vv.version())) { |
| 183 | log.info("Write success. New value: {}", next); |
Yuta HIGUCHI | 361664e | 2014-11-06 17:28:47 -0800 | [diff] [blame] | 184 | break; |
| 185 | } else { |
Yuta HIGUCHI | 1fea0b6 | 2014-11-07 00:38:35 -0800 | [diff] [blame] | 186 | log.info("Write failed trying to write {}", next); |
Madan Jampani | 12390c1 | 2014-11-12 00:35:56 -0800 | [diff] [blame^] | 187 | vv = dbService.get(someTable, someKey); |
| 188 | if (vv == null) { |
Yuta HIGUCHI | 1fea0b6 | 2014-11-07 00:38:35 -0800 | [diff] [blame] | 189 | log.error("Shouldn't reach here"); |
| 190 | } |
Yuta HIGUCHI | 361664e | 2014-11-06 17:28:47 -0800 | [diff] [blame] | 191 | } |
Yuta HIGUCHI | c6b8f61 | 2014-11-06 19:04:13 -0800 | [diff] [blame] | 192 | } while (retry-- > 0); |
Yuta HIGUCHI | 361664e | 2014-11-06 17:28:47 -0800 | [diff] [blame] | 193 | } catch (Exception e) { |
| 194 | log.error("Exception thrown", e); |
| 195 | } |
| 196 | } |
| 197 | |
| 198 | private final class LongIncrementor implements Runnable { |
| 199 | |
| 200 | @Override |
| 201 | public void run() { |
| 202 | longIncrementor(); |
| 203 | } |
| 204 | |
| 205 | } |
tom | 0755a36 | 2014-09-24 11:54:43 -0700 | [diff] [blame] | 206 | } |
| 207 | |
| 208 | |