| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.hadoop.hbase.master; |
| |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.hadoop.hbase.classification.InterfaceAudience; |
| import org.apache.hadoop.hbase.classification.InterfaceStability; |
| import org.apache.hadoop.hbase.CompatibilitySingletonFactory; |
| |
| /** |
| * This class is for maintaining the various master statistics |
| * and publishing them through the metrics interfaces. |
| * <p> |
| * This class has a number of metrics variables that are publicly accessible; |
| * these variables (objects) have methods to update their values. |
| */ |
| @InterfaceStability.Evolving |
| @InterfaceAudience.Private |
| public class MetricsMaster { |
| private static final Log LOG = LogFactory.getLog(MetricsMaster.class); |
| private MetricsMasterSource masterSource; |
| private MetricsMasterProcSource masterProcSource; |
| |
| public MetricsMaster(MetricsMasterWrapper masterWrapper) { |
| masterSource = CompatibilitySingletonFactory.getInstance(MetricsMasterSourceFactory.class).create(masterWrapper); |
| masterProcSource = |
| CompatibilitySingletonFactory.getInstance(MetricsMasterProcSourceFactory.class).create(masterWrapper); |
| } |
| |
| // for unit-test usage |
| public MetricsMasterSource getMetricsSource() { |
| return masterSource; |
| } |
| |
| public MetricsMasterProcSource getMetricsProcSource() { |
| return masterProcSource; |
| } |
| |
| /** |
| * @param inc How much to add to requests. |
| */ |
| public void incrementRequests(final long inc) { |
| masterSource.incRequests(inc); |
| } |
| } |