Jian Li | 3e1b887 | 2019-02-19 21:45:04 +0900 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2019-present Open Networking Foundation |
| 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.k8snetworking.impl; |
| 17 | |
| 18 | import com.google.common.collect.ImmutableSet; |
| 19 | import io.fabric8.kubernetes.api.model.EndpointAddress; |
| 20 | import io.fabric8.kubernetes.api.model.EndpointPort; |
| 21 | import io.fabric8.kubernetes.api.model.EndpointSubset; |
| 22 | import io.fabric8.kubernetes.api.model.Endpoints; |
| 23 | import io.fabric8.kubernetes.api.model.ObjectMeta; |
Jian Li | b1cd0b0 | 2019-02-21 16:41:40 +0900 | [diff] [blame] | 24 | import io.fabric8.kubernetes.api.model.ObjectReference; |
Jian Li | 3e1b887 | 2019-02-19 21:45:04 +0900 | [diff] [blame] | 25 | import org.onlab.util.KryoNamespace; |
| 26 | import org.onosproject.core.ApplicationId; |
| 27 | import org.onosproject.core.CoreService; |
| 28 | import org.onosproject.k8snetworking.api.K8sEndpointsEvent; |
| 29 | import org.onosproject.k8snetworking.api.K8sEndpointsStore; |
| 30 | import org.onosproject.k8snetworking.api.K8sEndpointsStoreDelegate; |
| 31 | import org.onosproject.store.AbstractStore; |
| 32 | import org.onosproject.store.serializers.KryoNamespaces; |
| 33 | import org.onosproject.store.service.ConsistentMap; |
| 34 | import org.onosproject.store.service.MapEvent; |
| 35 | import org.onosproject.store.service.MapEventListener; |
| 36 | import org.onosproject.store.service.Serializer; |
| 37 | import org.onosproject.store.service.StorageService; |
| 38 | import org.onosproject.store.service.Versioned; |
| 39 | import org.osgi.service.component.annotations.Activate; |
| 40 | import org.osgi.service.component.annotations.Component; |
| 41 | import org.osgi.service.component.annotations.Deactivate; |
| 42 | import org.osgi.service.component.annotations.Reference; |
| 43 | import org.osgi.service.component.annotations.ReferenceCardinality; |
| 44 | import org.slf4j.Logger; |
| 45 | |
| 46 | import java.util.Collection; |
Jian Li | b1cd0b0 | 2019-02-21 16:41:40 +0900 | [diff] [blame] | 47 | import java.util.LinkedHashMap; |
Jian Li | 3e1b887 | 2019-02-19 21:45:04 +0900 | [diff] [blame] | 48 | import java.util.Set; |
| 49 | import java.util.concurrent.ExecutorService; |
| 50 | |
| 51 | import static com.google.common.base.Preconditions.checkArgument; |
| 52 | import static java.util.concurrent.Executors.newSingleThreadExecutor; |
| 53 | import static org.onlab.util.Tools.groupedThreads; |
| 54 | import static org.onosproject.k8snetworking.api.K8sEndpointsEvent.Type.K8S_ENDPOINTS_CREATED; |
| 55 | import static org.onosproject.k8snetworking.api.K8sEndpointsEvent.Type.K8S_ENDPOINTS_REMOVED; |
| 56 | import static org.onosproject.k8snetworking.api.K8sEndpointsEvent.Type.K8S_ENDPOINTS_UPDATED; |
| 57 | import static org.slf4j.LoggerFactory.getLogger; |
| 58 | |
| 59 | /** |
| 60 | * Implementation of kubernetes service store using consistent map. |
| 61 | */ |
| 62 | @Component(immediate = true, service = K8sEndpointsStore.class) |
| 63 | public class DistributedK8sEndpointsStore |
| 64 | extends AbstractStore<K8sEndpointsEvent, K8sEndpointsStoreDelegate> |
| 65 | implements K8sEndpointsStore { |
| 66 | |
| 67 | private final Logger log = getLogger(getClass()); |
| 68 | |
| 69 | private static final String ERR_NOT_FOUND = " does not exist"; |
| 70 | private static final String ERR_DUPLICATE = " already exists"; |
| 71 | private static final String APP_ID = "org.onosproject.k8snetwork"; |
| 72 | |
| 73 | private static final KryoNamespace |
| 74 | SERIALIZER_K8S_ENDPOINTS = KryoNamespace.newBuilder() |
| 75 | .register(KryoNamespaces.API) |
| 76 | .register(Endpoints.class) |
| 77 | .register(ObjectMeta.class) |
| 78 | .register(EndpointSubset.class) |
| 79 | .register(EndpointAddress.class) |
Jian Li | b1cd0b0 | 2019-02-21 16:41:40 +0900 | [diff] [blame] | 80 | .register(ObjectReference.class) |
Jian Li | 3e1b887 | 2019-02-19 21:45:04 +0900 | [diff] [blame] | 81 | .register(EndpointPort.class) |
Jian Li | b1cd0b0 | 2019-02-21 16:41:40 +0900 | [diff] [blame] | 82 | .register(LinkedHashMap.class) |
Jian Li | 3e1b887 | 2019-02-19 21:45:04 +0900 | [diff] [blame] | 83 | .register(Collection.class) |
| 84 | .build(); |
| 85 | |
| 86 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| 87 | protected CoreService coreService; |
| 88 | |
| 89 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| 90 | protected StorageService storageService; |
| 91 | |
| 92 | private final ExecutorService eventExecutor = newSingleThreadExecutor( |
| 93 | groupedThreads(this.getClass().getSimpleName(), "event-handler", log)); |
| 94 | |
| 95 | private final MapEventListener<String, Endpoints> endpointsMapListener = |
| 96 | new K8sEndpointsMapListener(); |
| 97 | |
| 98 | private ConsistentMap<String, Endpoints> endpointsStore; |
| 99 | |
| 100 | @Activate |
| 101 | protected void activate() { |
| 102 | ApplicationId appId = coreService.registerApplication(APP_ID); |
| 103 | endpointsStore = storageService.<String, Endpoints>consistentMapBuilder() |
| 104 | .withSerializer(Serializer.using(SERIALIZER_K8S_ENDPOINTS)) |
| 105 | .withName("k8s-endpoints-store") |
| 106 | .withApplicationId(appId) |
| 107 | .build(); |
| 108 | |
| 109 | endpointsStore.addListener(endpointsMapListener); |
| 110 | log.info("Started"); |
| 111 | } |
| 112 | |
| 113 | @Deactivate |
| 114 | protected void deactivate() { |
| 115 | endpointsStore.removeListener(endpointsMapListener); |
| 116 | eventExecutor.shutdown(); |
| 117 | log.info("Stopped"); |
| 118 | } |
| 119 | |
| 120 | @Override |
| 121 | public void createEndpoints(Endpoints endpoints) { |
| 122 | endpointsStore.compute(endpoints.getMetadata().getUid(), (uid, existing) -> { |
| 123 | final String error = endpoints.getMetadata().getUid() + ERR_DUPLICATE; |
| 124 | checkArgument(existing == null, error); |
| 125 | return endpoints; |
| 126 | }); |
| 127 | } |
| 128 | |
| 129 | @Override |
| 130 | public void updateEndpoints(Endpoints endpoints) { |
| 131 | endpointsStore.compute(endpoints.getMetadata().getUid(), (uid, existing) -> { |
| 132 | final String error = endpoints.getMetadata().getUid() + ERR_NOT_FOUND; |
| 133 | checkArgument(existing != null, error); |
| 134 | return endpoints; |
| 135 | }); |
| 136 | } |
| 137 | |
| 138 | @Override |
| 139 | public Endpoints removeEndpoints(String uid) { |
| 140 | Versioned<Endpoints> endpoints = endpointsStore.remove(uid); |
| 141 | if (endpoints == null) { |
| 142 | final String error = uid + ERR_NOT_FOUND; |
| 143 | throw new IllegalArgumentException(error); |
| 144 | } |
| 145 | return endpoints.value(); |
| 146 | } |
| 147 | |
| 148 | @Override |
| 149 | public Endpoints endpoints(String uid) { |
| 150 | return endpointsStore.asJavaMap().get(uid); |
| 151 | } |
| 152 | |
| 153 | @Override |
| 154 | public Set<Endpoints> endpointses() { |
| 155 | return ImmutableSet.copyOf(endpointsStore.asJavaMap().values()); |
| 156 | } |
| 157 | |
| 158 | @Override |
| 159 | public void clear() { |
| 160 | endpointsStore.clear(); |
| 161 | } |
| 162 | |
| 163 | private class K8sEndpointsMapListener implements MapEventListener<String, Endpoints> { |
| 164 | |
| 165 | @Override |
| 166 | public void event(MapEvent<String, Endpoints> event) { |
| 167 | |
| 168 | switch (event.type()) { |
| 169 | case INSERT: |
| 170 | log.debug("Kubernetes endpoints created {}", event.newValue()); |
| 171 | eventExecutor.execute(() -> |
| 172 | notifyDelegate(new K8sEndpointsEvent( |
| 173 | K8S_ENDPOINTS_CREATED, event.newValue().value()))); |
| 174 | break; |
| 175 | case UPDATE: |
| 176 | log.debug("Kubernetes endpoints updated {}", event.newValue()); |
| 177 | eventExecutor.execute(() -> |
| 178 | notifyDelegate(new K8sEndpointsEvent( |
| 179 | K8S_ENDPOINTS_UPDATED, event.newValue().value()))); |
| 180 | break; |
| 181 | case REMOVE: |
| 182 | log.debug("Kubernetes endpoints removed {}", event.oldValue()); |
| 183 | eventExecutor.execute(() -> |
| 184 | notifyDelegate(new K8sEndpointsEvent( |
| 185 | K8S_ENDPOINTS_REMOVED, event.oldValue().value()))); |
| 186 | break; |
| 187 | default: |
| 188 | // do nothing |
| 189 | break; |
| 190 | } |
| 191 | } |
| 192 | } |
| 193 | } |