/*

  * This software is licensed under the Apache License, Version 2.0

  * (the "License") agreement; 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 net.admin4j.exception;

 import java.util.Date;

 import java.util.Set;

 import java.util.concurrent.atomic.AtomicInteger;

 import net.admin4j.config.Admin4JConfiguration;

 import net.admin4j.dao.DAOFactory;

 import net.admin4j.deps.commons.lang3.Validate;

 import net.admin4j.deps.commons.lang3.time.DateUtils;

 import net.admin4j.entity.ExceptionInfo;

 /**

  * Will clean up dated entries in the Exception Tracker so memory usage is contained (e.g. doesn't leak').

  * @author D. Ashmore

  * @since 1.0

  */

 class ExceptionTrackerCleanupTask implements Runnable {

     static final int DEFAULT_PURGE_THRESHOLD_IN_DAYS = 30;  

     private AtomicInteger purgeThresholdInDays = new AtomicInteger(DEFAULT_PURGE_THRESHOLD_IN_DAYS);

     /* (non-Javadoc)

      * @see java.lang.Thread#run()

      */

     public void run() {

         Date purgeDt = DateUtils.addDays(new Date(), -1 * purgeThresholdInDays.get());

         Set<ExceptionInfo> exceptionSet = ExceptionTracker.getExceptionInfoSet();

         for (ExceptionInfo eInfo: exceptionSet) {

             if (purgeDt.getTime() > eInfo.getLastOccuranceDt().getTime()) {

                 ExceptionTracker.purgeException(eInfo);

             }

         }

         if (Admin4JConfiguration.isExceptionInfoStored()) {

             DAOFactory.getExceptionInfoDAO().saveAll(exceptionSet);

         }

     }

     public void setPurgeThresholdInDays(Integer days) {

         Validate.notNull(days, "Purge threshhold cannot be null");

         Validate.isTrue(days > 0, "Purge threshhold must be larger than zero");

         purgeThresholdInDays.set(days);

     }

 }