Madan Jampani | 78be249 | 2016-06-03 23:27:07 -0700 | [diff] [blame] | 1 | /* |
Brian O'Connor | a09fe5b | 2017-08-03 21:12:30 -0700 | [diff] [blame] | 2 | * Copyright 2014-present Open Networking Foundation |
Madan Jampani | 78be249 | 2016-06-03 23:27:07 -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 | package org.onosproject.store.core.impl; |
| 17 | |
| 18 | import static org.slf4j.LoggerFactory.getLogger; |
| 19 | |
| 20 | |
| 21 | import java.util.Map; |
| 22 | import java.util.Set; |
| 23 | |
| 24 | |
| 25 | import org.apache.felix.scr.annotations.Activate; |
| 26 | import org.apache.felix.scr.annotations.Component; |
| 27 | import org.apache.felix.scr.annotations.Deactivate; |
| 28 | import org.apache.felix.scr.annotations.Reference; |
| 29 | import org.apache.felix.scr.annotations.ReferenceCardinality; |
| 30 | import org.apache.felix.scr.annotations.Service; |
| 31 | import org.onosproject.core.ApplicationId; |
sangyun-han | 6d33e80 | 2016-08-05 13:36:33 +0900 | [diff] [blame] | 32 | import org.onosproject.app.ApplicationIdStore; |
Madan Jampani | 78be249 | 2016-06-03 23:27:07 -0700 | [diff] [blame] | 33 | import org.onosproject.core.DefaultApplicationId; |
| 34 | import org.onosproject.store.serializers.KryoNamespaces; |
| 35 | import org.onosproject.store.service.AtomicCounter; |
| 36 | import org.onosproject.store.service.ConsistentMap; |
| 37 | import org.onosproject.store.service.MapEvent; |
| 38 | import org.onosproject.store.service.MapEventListener; |
| 39 | import org.onosproject.store.service.Serializer; |
| 40 | import org.onosproject.store.service.StorageService; |
Madan Jampani | 78be249 | 2016-06-03 23:27:07 -0700 | [diff] [blame] | 41 | import org.slf4j.Logger; |
| 42 | |
| 43 | |
| 44 | import com.google.common.collect.ImmutableSet; |
| 45 | import com.google.common.collect.Maps; |
| 46 | |
| 47 | /** |
| 48 | * ApplicationIdStore implementation on top of {@code AtomicCounter} |
| 49 | * and {@code ConsistentMap} primitives. |
| 50 | */ |
Sho SHIMIZU | 5c396e3 | 2016-08-12 15:19:12 -0700 | [diff] [blame] | 51 | @Component(immediate = true) |
Madan Jampani | 78be249 | 2016-06-03 23:27:07 -0700 | [diff] [blame] | 52 | @Service |
| 53 | public class DistributedApplicationIdStore implements ApplicationIdStore { |
| 54 | |
| 55 | private final Logger log = getLogger(getClass()); |
| 56 | |
| 57 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 58 | protected StorageService storageService; |
| 59 | |
| 60 | private AtomicCounter appIdCounter; |
| 61 | private ConsistentMap<String, ApplicationId> registeredIds; |
| 62 | private Map<Short, ApplicationId> idToAppIdCache = Maps.newConcurrentMap(); |
| 63 | private MapEventListener<String, ApplicationId> mapEventListener = event -> { |
| 64 | if (event.type() == MapEvent.Type.INSERT) { |
| 65 | idToAppIdCache.put(event.newValue().value().id(), event.newValue().value()); |
| 66 | } |
| 67 | }; |
| 68 | |
| 69 | @Activate |
| 70 | public void activate() { |
| 71 | appIdCounter = storageService.getAtomicCounter("onos-app-id-counter"); |
| 72 | |
| 73 | registeredIds = storageService.<String, ApplicationId>consistentMapBuilder() |
| 74 | .withName("onos-app-ids") |
| 75 | .withSerializer(Serializer.using(KryoNamespaces.API)) |
| 76 | .withRelaxedReadConsistency() |
| 77 | .build(); |
| 78 | |
| 79 | primeIdToAppIdCache(); |
| 80 | registeredIds.addListener(mapEventListener); |
| 81 | |
| 82 | log.info("Started"); |
| 83 | } |
| 84 | |
| 85 | @Deactivate |
| 86 | public void deactivate() { |
| 87 | registeredIds.removeListener(mapEventListener); |
| 88 | log.info("Stopped"); |
| 89 | } |
| 90 | |
| 91 | @Override |
| 92 | public Set<ApplicationId> getAppIds() { |
| 93 | return ImmutableSet.copyOf(registeredIds.asJavaMap().values()); |
| 94 | } |
| 95 | |
| 96 | @Override |
| 97 | public ApplicationId getAppId(Short id) { |
| 98 | if (!idToAppIdCache.containsKey(id)) { |
| 99 | primeIdToAppIdCache(); |
| 100 | } |
| 101 | return idToAppIdCache.get(id); |
| 102 | } |
| 103 | |
| 104 | @Override |
| 105 | public ApplicationId getAppId(String name) { |
| 106 | return registeredIds.asJavaMap().get(name); |
| 107 | } |
| 108 | |
| 109 | @Override |
| 110 | public ApplicationId registerApplication(String name) { |
Madan Jampani | 6c02d9e | 2016-05-24 15:09:47 -0700 | [diff] [blame] | 111 | ApplicationId exisitingAppId = registeredIds.asJavaMap().get(name); |
| 112 | if (exisitingAppId == null) { |
| 113 | ApplicationId newAppId = new DefaultApplicationId((int) appIdCounter.incrementAndGet(), name); |
| 114 | exisitingAppId = registeredIds.asJavaMap().putIfAbsent(name, newAppId); |
| 115 | return exisitingAppId == null ? newAppId : exisitingAppId; |
| 116 | } else { |
| 117 | return exisitingAppId; |
| 118 | } |
Madan Jampani | 78be249 | 2016-06-03 23:27:07 -0700 | [diff] [blame] | 119 | } |
| 120 | |
| 121 | private void primeIdToAppIdCache() { |
| 122 | registeredIds.asJavaMap() |
| 123 | .values() |
| 124 | .forEach(appId -> { |
| 125 | idToAppIdCache.putIfAbsent(appId.id(), appId); |
| 126 | }); |
| 127 | } |
| 128 | } |