001/* 002 * Licensed to the Apache Software Foundation (ASF) under one 003 * or more contributor license agreements. See the NOTICE file 004 * distributed with this work for additional information 005 * regarding copyright ownership. The ASF licenses this file 006 * to you under the Apache License, Version 2.0 (the 007 * "License"); you may not use this file except in compliance 008 * with the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, software 013 * distributed under the License is distributed on an "AS IS" BASIS, 014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 015 * See the License for the specific language governing permissions and 016 * limitations under the License. 017 */ 018package org.apache.hadoop.hbase.ipc; 019 020import java.util.HashMap; 021import java.util.Locale; 022import org.apache.yetus.audience.InterfaceAudience; 023 024@InterfaceAudience.Private 025public class MetricsHBaseServerSourceFactoryImpl extends MetricsHBaseServerSourceFactory { 026 027 @SuppressWarnings("ImmutableEnumChecker") 028 private enum SourceStorage { 029 INSTANCE; 030 031 private final HashMap<String, MetricsHBaseServerSource> sources = new HashMap<>(); 032 } 033 034 @Override 035 public MetricsHBaseServerSource create(String serverName, MetricsHBaseServerWrapper wrapper) { 036 return getSource(serverName, wrapper); 037 } 038 039 private static synchronized MetricsHBaseServerSource getSource(String serverName, 040 MetricsHBaseServerWrapper wrap) { 041 String context = createContextName(serverName); 042 MetricsHBaseServerSource source = SourceStorage.INSTANCE.sources.get(context); 043 044 if (source == null) { 045 // Create the source. 046 source = new MetricsHBaseServerSourceImpl(context, METRICS_DESCRIPTION, 047 context.toLowerCase(Locale.ROOT), context + METRICS_JMX_CONTEXT_SUFFIX, wrap); 048 049 // Store back in storage 050 SourceStorage.INSTANCE.sources.put(context, source); 051 } 052 053 return source; 054 055 } 056 057}