1 /** 2 * 3 * Licensed to the Apache Software Foundation (ASF) under one 4 * or more contributor license agreements. See the NOTICE file 5 * distributed with this work for additional information 6 * regarding copyright ownership. The ASF licenses this file 7 * to you under the Apache License, Version 2.0 (the 8 * "License"); you may not use this file except in compliance 9 * with the License. You may obtain a copy of the License at 10 * 11 * http://www.apache.org/licenses/LICENSE-2.0 12 * 13 * Unless required by applicable law or agreed to in writing, software 14 * distributed under the License is distributed on an "AS IS" BASIS, 15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 16 * See the License for the specific language governing permissions and 17 * limitations under the License. 18 */ 19 package org.apache.hadoop.hbase; 20 21 import org.apache.hadoop.classification.InterfaceAudience; 22 import org.apache.hadoop.conf.Configuration; 23 import org.apache.hadoop.hbase.catalog.CatalogTracker; 24 import org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher; 25 26 /** 27 * Defines the set of shared functions implemented by HBase servers (Masters 28 * and RegionServers). 29 */ 30 @InterfaceAudience.Private 31 public interface Server extends Abortable, Stoppable { 32 /** 33 * Gets the configuration object for this server. 34 */ 35 Configuration getConfiguration(); 36 37 /** 38 * Gets the ZooKeeper instance for this server. 39 */ 40 ZooKeeperWatcher getZooKeeper(); 41 42 /** 43 * @return Master's instance of {@link CatalogTracker} 44 */ 45 CatalogTracker getCatalogTracker(); 46 47 /** 48 * @return The unique server name for this server. 49 */ 50 ServerName getServerName(); 51 }