2 * ============LICENSE_START=======================================================
3 * Copyright (C) 2016-2018 Ericsson. All rights reserved.
4 * ================================================================================
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
17 * SPDX-License-Identifier: Apache-2.0
18 * ============LICENSE_END=========================================================
21 package org.onap.policy.apex.plugins.context.locking.curator;
23 import java.util.concurrent.locks.Lock;
24 import java.util.concurrent.locks.ReadWriteLock;
25 import org.apache.curator.framework.CuratorFramework;
26 import org.apache.curator.framework.recipes.locks.InterProcessReadWriteLock;
29 * This class maps a Curator {@link InterProcessReadWriteLock} to a Java {@link ReadWriteLock}.
31 * @author Liam Fallon (liam.fallon@ericsson.com)
33 public class CuratorReentrantReadWriteLock implements ReadWriteLock {
35 private final String lockId;
38 private final InterProcessReadWriteLock curatorReadWriteLock;
40 // The Curator Lock facades for read and write locks
41 private final CuratorLockFacade readLockFacade;
42 private final CuratorLockFacade writeLockFacade;
45 * Create a Curator lock.
47 * @param curatorFramework the Curator framework to use to create the lock
48 * @param lockId The unique ID of the lock.
50 public CuratorReentrantReadWriteLock(final CuratorFramework curatorFramework, final String lockId) {
53 // Create the Curator lock
54 curatorReadWriteLock = new InterProcessReadWriteLock(curatorFramework, lockId);
56 // Create the lock facades
57 readLockFacade = new CuratorLockFacade(curatorReadWriteLock.readLock(), lockId);
58 writeLockFacade = new CuratorLockFacade(curatorReadWriteLock.writeLock(), lockId);
62 * Get the lock Id of the lock.
66 public String getLockId() {
74 public Lock readLock() {
75 return readLockFacade;
82 public Lock writeLock() {
83 return writeLockFacade;