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 }