1 /**
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
17 */
18 package org.apache.hadoop.hbase.client;
19
20 import java.io.IOException;
21
22 import org.apache.hadoop.hbase.classification.InterfaceAudience;
23
24 /**
25 * Get instance of configured Registry.
26 */
27 @InterfaceAudience.Private
28 class RegistryFactory {
29 static final String REGISTRY_IMPL_CONF_KEY = "hbase.client.registry.impl";
30
31 /**
32 * @return The cluster registry implementation to use.
33 * @throws IOException
34 */
35 static Registry getRegistry(final Connection connection)
36 throws IOException {
37 String registryClass = connection.getConfiguration().get(REGISTRY_IMPL_CONF_KEY,
38 ZooKeeperRegistry.class.getName());
39 Registry registry = null;
40 try {
41 registry = (Registry)Class.forName(registryClass).getDeclaredConstructor().newInstance();
42 } catch (Throwable t) {
43 throw new IOException(t);
44 }
45 registry.init(connection);
46 return registry;
47 }
48 }