org.apache.synapse.aspects.statistics.StatisticsCleaner Maven / Gradle / Ivy
/*
* 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.synapse.aspects.statistics;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.synapse.config.SynapsePropertiesLoader;
/**
* Clean the statistics stored in the StatisticsCollector based on a policy
*/
public class StatisticsCleaner {
private static final Log log = LogFactory.getLog(StatisticsCleaner.class);
private final static long DEFAULT_CLEAN_INTERVAL = 1000 * 60 * 5;
private final static String CLEAN_INTERVAL = "statistics.clean.interval";
private final static String CLEAN_ENABLE = "statistics.clean.enable";
private StatisticsCollector collector;
private long cleanInterval;
private long nextTime = -1;
private boolean isCleanEnable = true;
public StatisticsCleaner(StatisticsCollector collector) {
this.collector = collector;
this.cleanInterval = Long.parseLong(SynapsePropertiesLoader.getPropertyValue(
CLEAN_INTERVAL,
String.valueOf(DEFAULT_CLEAN_INTERVAL)));
this.isCleanEnable = Boolean.parseBoolean(
SynapsePropertiesLoader.getPropertyValue(
CLEAN_ENABLE, String.valueOf(true)));
if (isCleanEnable) {
if (log.isDebugEnabled()) {
log.debug("Statistics cleaning is will be occured with interval : " +
cleanInterval / 1000 + " s.");
}
}
}
/**
* Clean the expired statistics
*/
public void clean() {
try {
if (!isCleanEnable) {
if (log.isDebugEnabled()) {
log.debug("Statistics cleaning is disabled.");
}
return;
}
if (collector == null) {
if (log.isDebugEnabled()) {
log.debug("There are no statistics to be cleaned.");
}
return;
}
long currentTime = System.currentTimeMillis();
if (nextTime == -1) {
nextTime = currentTime + cleanInterval;
}
if (nextTime <= currentTime) {
collector.clearStatistics();
nextTime = currentTime + cleanInterval;
} else {
if (log.isDebugEnabled()) {
log.debug("There are no expired statistics to be cleaned.");
}
}
} catch (Throwable ignored) {
}
}
}