| /** |
| * 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 |
| * <p> |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * <p> |
| * 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.hadoop.hbase.oss; |
| |
| import java.net.InetAddress; |
| import org.apache.commons.lang3.StringUtils; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.hbase.HBaseZKTestingUtility; |
| import org.apache.hadoop.hbase.oss.Constants; |
| import org.apache.hadoop.hbase.oss.sync.TreeLockManager; |
| import org.apache.hadoop.hbase.oss.sync.ZKTreeLockManager; |
| import org.apache.yetus.audience.InterfaceAudience; |
| import org.apache.yetus.audience.InterfaceStability; |
| |
| @InterfaceAudience.Private |
| @InterfaceStability.Unstable |
| public class EmbeddedZK { |
| |
| private static HBaseZKTestingUtility util = null; |
| |
| public static synchronized void conditionalStart(Configuration conf) throws Exception { |
| Class implementation = conf.getClass(Constants.SYNC_IMPL, TreeLockManager.class); |
| boolean notConfigured = StringUtils.isEmpty(conf.get(Constants.ZK_CONN_STRING)); |
| if (implementation == ZKTreeLockManager.class && notConfigured) { |
| if (util == null) { |
| util = new HBaseZKTestingUtility(conf); |
| util.startMiniZKCluster(); |
| } |
| int port = util.getZkCluster().getClientPort(); |
| String hostname = InetAddress.getLocalHost().getHostName(); |
| String connectionString = hostname + ":" + port; |
| conf.set(Constants.ZK_CONN_STRING, connectionString); |
| } |
| } |
| |
| public static synchronized void conditionalStop() throws Exception { |
| if (util != null) { |
| util.shutdownMiniZKCluster(); |
| util = null; |
| } |
| } |
| } |