| /* |
| * Copyright 2015 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.store.consistent.impl; |
| |
| import static com.google.common.base.Preconditions.checkArgument; |
| import static com.google.common.base.Preconditions.checkState; |
| |
| import java.util.Set; |
| import java.util.function.Consumer; |
| |
| import org.onosproject.cluster.NodeId; |
| import org.onosproject.store.service.DistributedQueue; |
| import org.onosproject.store.service.DistributedQueueBuilder; |
| import org.onosproject.store.service.Serializer; |
| |
| import com.google.common.base.Charsets; |
| |
| /** |
| * Default implementation of a {@code DistributedQueueBuilder}. |
| * |
| * @param <E> queue entry type |
| */ |
| public class DefaultDistributedQueueBuilder<E> implements DistributedQueueBuilder<E> { |
| |
| private Serializer serializer; |
| private String name; |
| private boolean persistenceEnabled = true; |
| private final DatabaseManager databaseManager; |
| |
| public DefaultDistributedQueueBuilder( |
| DatabaseManager databaseManager) { |
| this.databaseManager = databaseManager; |
| } |
| |
| @Override |
| public DistributedQueueBuilder<E> withName(String name) { |
| checkArgument(name != null && !name.isEmpty()); |
| this.name = name; |
| return this; |
| } |
| |
| @Override |
| public DistributedQueueBuilder<E> withSerializer(Serializer serializer) { |
| checkArgument(serializer != null); |
| this.serializer = serializer; |
| return this; |
| } |
| |
| @Override |
| public DistributedQueueBuilder<E> withPersistenceDisabled() { |
| persistenceEnabled = false; |
| return this; |
| } |
| |
| private boolean validInputs() { |
| return name != null && serializer != null; |
| } |
| |
| @Override |
| public DistributedQueue<E> build() { |
| checkState(validInputs()); |
| Consumer<Set<NodeId>> notifyOthers = nodes -> databaseManager.clusterCommunicator.multicast(name, |
| DatabaseManager.QUEUE_UPDATED_TOPIC, |
| s -> s.getBytes(Charsets.UTF_8), |
| nodes); |
| DefaultDistributedQueue<E> queue = new DefaultDistributedQueue<>( |
| name, |
| persistenceEnabled ? databaseManager.partitionedDatabase : databaseManager.inMemoryDatabase, |
| serializer, |
| databaseManager.localNodeId, |
| notifyOthers); |
| databaseManager.registerQueue(queue); |
| return queue; |
| } |
| } |