kevinrr888 commented on code in PR #5028: URL: https://github.com/apache/accumulo/pull/5028#discussion_r1825110626
########## test/src/main/java/org/apache/accumulo/test/fate/TestLock.java: ########## @@ -0,0 +1,119 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you 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 + * + * https://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.apache.accumulo.test.fate; + +import java.util.UUID; +import java.util.concurrent.CountDownLatch; + +import org.apache.accumulo.core.Constants; +import org.apache.accumulo.core.fate.user.UserFateStore; +import org.apache.accumulo.core.fate.zookeeper.MetaFateStore; +import org.apache.accumulo.core.fate.zookeeper.ZooUtil; +import org.apache.accumulo.core.lock.ServiceLock; +import org.apache.accumulo.core.lock.ServiceLockData; +import org.apache.accumulo.core.lock.ServiceLockPaths; +import org.apache.accumulo.server.ServerContext; +import org.apache.zookeeper.CreateMode; +import org.apache.zookeeper.KeeperException; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +public class TestLock { + private static final Logger log = LoggerFactory.getLogger(TestLock.class); + final CountDownLatch lockAcquiredLatch; + + public TestLock() { + this.lockAcquiredLatch = new CountDownLatch(1); + } + + /** + * Used to create a dummy lock id to be passed in the creation of a {@link UserFateStore} or a + * {@link MetaFateStore}. Useful as a quicker and simpler alternative to + * {@link TestLock#createTestLock(ServerContext)} for tests where reserving transactions is needed + * AND the reservations for the test will be stored in a different location from the Managers fate + * stores. Can always use {@link TestLock#createTestLock(ServerContext)} to be safe if unsure + * which to use. + */ + public static ZooUtil.LockID createDummyLockID() { + return new ZooUtil.LockID("/path", "node", 123); + } + + /** + * Used to create a real lock (one held in ZK) to be passed in the creation of a + * {@link UserFateStore} or a {@link MetaFateStore}. Useful for tests where reserving transactions + * is needed AND the reservations for the test will be stored in the same location as the Managers + * fate stores. This is needed so the Manager will recognize and not delete these reservations. + * See similar {@link TestLock#createDummyLockID()} + */ + public ServiceLock createTestLock(ServerContext context) throws InterruptedException { + var zk = context.getZooReaderWriter().getZooKeeper(); + UUID uuid = UUID.randomUUID(); + ServiceLockPaths.ServiceLockPath slp = context.getServerPaths().createTestLockPath(); + ServiceLock lock = new ServiceLock(context.getZooReaderWriter().getZooKeeper(), slp, uuid); + TestLockWatcher lw = new TestLockWatcher(); + ServiceLockData.ServiceDescriptors descriptors = new ServiceLockData.ServiceDescriptors(); + descriptors.addService(new ServiceLockData.ServiceDescriptor(uuid, + ServiceLockData.ThriftService.NONE, "localhost", Constants.DEFAULT_RESOURCE_GROUP_NAME)); Review Comment: same "localhost" comment -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
