1 /**
2 * Copyright 2010 The Apache Software Foundation
3 *
4 * Licensed to the Apache Software Foundation (ASF) under one
5 * or more contributor license agreements. See the NOTICE file
6 * distributed with this work for additional information
7 * regarding copyright ownership. The ASF licenses this file
8 * to you under the Apache License, Version 2.0 (the
9 * "License"); you may not use this file except in compliance
10 * with the License. You may obtain a copy of the License at
11 *
12 * http://www.apache.org/licenses/LICENSE-2.0
13 *
14 * Unless required by applicable law or agreed to in writing, software
15 * distributed under the License is distributed on an "AS IS" BASIS,
16 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
17 * See the License for the specific language governing permissions and
18 * limitations under the License.
19 */
20 package org.apache.hadoop.hbase;
21
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 public interface Server extends Abortable, Stoppable {
31 /**
32 * Gets the configuration object for this server.
33 */
34 public Configuration getConfiguration();
35
36 /**
37 * Gets the ZooKeeper instance for this server.
38 */
39 public ZooKeeperWatcher getZooKeeper();
40
41 /**
42 * @return Master's instance of {@link CatalogTracker}
43 */
44 public CatalogTracker getCatalogTracker();
45
46 /**
47 * @return The unique server name for this server.
48 */
49 public ServerName getServerName();
50 }