001    /*
002     * Licensed to the Apache Software Foundation (ASF) under one or more
003     * contributor license agreements.  See the NOTICE file distributed with
004     * this work for additional information regarding copyright ownership.
005     * The ASF licenses this file to You under the Apache License, Version 2.0
006     * (the "License"); you may not use this file except in compliance with
007     * the License.  You may obtain a copy of the License at
008     *
009     *      http://www.apache.org/licenses/LICENSE-2.0
010     *
011     * Unless required by applicable law or agreed to in writing, software
012     * distributed under the License is distributed on an "AS IS" BASIS,
013     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014     * See the License for the specific language governing permissions and
015     * limitations under the License.
016     */
017    package org.apache.commons.monitoring.reporting.web.plugin.jvm.gauges;
018    
019    import org.apache.commons.monitoring.configuration.Configuration;
020    import org.apache.commons.monitoring.gauges.Gauge;
021    
022    import java.lang.management.ManagementFactory;
023    import java.lang.management.MemoryMXBean;
024    
025    public abstract class BaseMemoryGauge implements Gauge {
026        protected static final MemoryMXBean MEMORY_MX_BEAN = ManagementFactory.getMemoryMXBean();
027    
028        @Override
029        public long period() {
030            return Configuration.getInteger(Configuration.COMMONS_MONITORING_PREFIX + "gauge.memory.period", 4000);
031        }
032    }