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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one or more
3    * contributor license agreements.  See the NOTICE file distributed with
4    * this work for additional information regarding copyright ownership.
5    * The ASF licenses this file to You under the Apache License, Version 2.0
6    * (the "License"); you may not use this file except in compliance with
7    * the License.  You may obtain a copy of the License at
8    *
9    *      http://www.apache.org/licenses/LICENSE-2.0
10   *
11   * Unless required by applicable law or agreed to in writing, software
12   * distributed under the License is distributed on an "AS IS" BASIS,
13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   * See the License for the specific language governing permissions and
15   * limitations under the License.
16   */
17  package org.apache.commons.monitoring.reporting.web.plugin.jvm.gauges;
18  
19  import org.apache.commons.monitoring.configuration.Configuration;
20  import org.apache.commons.monitoring.gauges.Gauge;
21  
22  import java.lang.management.ManagementFactory;
23  import java.lang.management.MemoryMXBean;
24  
25  public abstract class BaseMemoryGauge implements Gauge {
26      protected static final MemoryMXBean MEMORY_MX_BEAN = ManagementFactory.getMemoryMXBean();
27  
28      @Override
29      public long period() {
30          return Configuration.getInteger(Configuration.COMMONS_MONITORING_PREFIX + "gauge.memory.period", 4000);
31      }
32  }