Java tutorial
/* * Copyright 2017-present Open Networking Laboratory * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.onosproject.incubator.store.virtual.impl; import com.google.common.collect.Maps; import org.apache.felix.scr.annotations.Component; import org.apache.felix.scr.annotations.Service; import org.onlab.util.KryoNamespace; import org.onosproject.incubator.net.virtual.NetworkId; import org.onosproject.incubator.net.virtual.VirtualNetworkFlowObjectiveStore; import org.onosproject.store.serializers.KryoNamespaces; import org.onosproject.store.service.ConsistentMap; import org.onosproject.store.service.Serializer; import org.slf4j.Logger; import java.util.concurrent.ConcurrentMap; import static org.slf4j.LoggerFactory.getLogger; /** * Distributed flow objective store for virtual network. */ @Component(immediate = true, enabled = false) @Service public class DistributedVirtualFlowObjectiveStore extends SimpleVirtualFlowObjectiveStore implements VirtualNetworkFlowObjectiveStore { private final Logger log = getLogger(getClass()); private ConsistentMap<NetworkId, ConcurrentMap<Integer, byte[]>> nextGroupsMap; private static final String VNET_FLOW_OBJ_GROUP_MAP_NAME = "onos-networkId-flowobjective-groups"; private static final String VNET_FLOW_OBJ_GROUP_MAP_FRIENDLYNAME = "DistributedVirtualFlowObjectiveStore"; @Override protected void initNextGroupsMap() { nextGroupsMap = storageService.<NetworkId, ConcurrentMap<Integer, byte[]>>consistentMapBuilder() .withName(VNET_FLOW_OBJ_GROUP_MAP_NAME) .withSerializer(Serializer.using(new KryoNamespace.Builder().register(KryoNamespaces.API) .register(NetworkId.class).build(VNET_FLOW_OBJ_GROUP_MAP_FRIENDLYNAME))) .build(); } @Override protected ConcurrentMap<Integer, byte[]> getNextGroups(NetworkId networkId) { nextGroupsMap.computeIfAbsent(networkId, n -> { log.debug("getNextGroups - creating new ConcurrentMap"); return Maps.newConcurrentMap(); }); return nextGroupsMap.get(networkId).value(); } @Override protected void updateNextGroupsMap(NetworkId networkId, ConcurrentMap<Integer, byte[]> nextGroups) { nextGroupsMap.put(networkId, nextGroups); } }