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.thrift; 019 020import org.apache.yetus.audience.InterfaceAudience; 021 022/** 023 * Class used to create metrics sources for Thrift and Thrift2 servers. 024 */ 025@InterfaceAudience.Private 026public class MetricsThriftServerSourceFactoryImpl implements MetricsThriftServerSourceFactory { 027 028 /** 029 * A singleton used to make sure that only one thrift metrics source per server type is ever 030 * created. 031 */ 032 @SuppressWarnings("ImmutableEnumChecker") 033 private enum FactoryStorage { 034 INSTANCE; 035 036 private MetricsThriftServerSourceImpl thriftOne; 037 private MetricsThriftServerSourceImpl thriftTwo; 038 } 039 040 @Override 041 public MetricsThriftServerSource createThriftOneSource() { 042 if (FactoryStorage.INSTANCE.thriftOne == null) { 043 FactoryStorage.INSTANCE.thriftOne = new MetricsThriftServerSourceImpl(METRICS_NAME, 044 METRICS_DESCRIPTION, THRIFT_ONE_METRICS_CONTEXT, THRIFT_ONE_JMX_CONTEXT); 045 } 046 return FactoryStorage.INSTANCE.thriftOne; 047 } 048 049 @Override 050 public MetricsThriftServerSource createThriftTwoSource() { 051 if (FactoryStorage.INSTANCE.thriftTwo == null) { 052 FactoryStorage.INSTANCE.thriftTwo = new MetricsThriftServerSourceImpl(METRICS_NAME, 053 METRICS_DESCRIPTION, THRIFT_TWO_METRICS_CONTEXT, THRIFT_TWO_JMX_CONTEXT); 054 } 055 return FactoryStorage.INSTANCE.thriftTwo; 056 } 057}