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
20 package org.apache.hadoop.hbase.ipc;
21
22 import java.util.HashMap;
23
24 public class MetricsHBaseServerSourceFactoryImpl extends MetricsHBaseServerSourceFactory {
25 private static enum SourceStorage {
26 INSTANCE;
27 HashMap<String, MetricsHBaseServerSource>
28 sources =
29 new HashMap<String, MetricsHBaseServerSource>();
30
31 }
32
33 @Override
34 public MetricsHBaseServerSource create(String serverName, MetricsHBaseServerWrapper wrapper) {
35 return getSource(serverName, wrapper);
36 }
37
38 private static synchronized MetricsHBaseServerSource getSource(String serverName,
39 MetricsHBaseServerWrapper wrapper) {
40 String context = createContextName(serverName);
41 MetricsHBaseServerSource source = SourceStorage.INSTANCE.sources.get(context);
42
43 if (source == null) {
44 //Create the source.
45 source = new MetricsHBaseServerSourceImpl(
46 METRICS_NAME,
47 METRICS_DESCRIPTION,
48 context.toLowerCase(),
49 context + METRICS_JMX_CONTEXT_SUFFIX, wrapper);
50
51 //Store back in storage
52 SourceStorage.INSTANCE.sources.put(context, source);
53 }
54
55 return source;
56
57 }
58
59 }