/**

  * Copyright 2005-2011 The Kuali Foundation

  *

  * Licensed under the Educational Community 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.opensource.org/licenses/ecl2.php

  *

  * 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.kuali.rice.ksb.messaging.service.impl;

 import org.apache.commons.lang.StringUtils;

 import org.kuali.rice.core.api.config.property.ConfigContext;

 import org.kuali.rice.core.api.exception.RiceIllegalArgumentException;

 import org.kuali.rice.core.api.lifecycle.BaseLifecycle;

 import org.kuali.rice.ksb.messaging.service.BusAdminService;

 import org.kuali.rice.ksb.messaging.threadpool.KSBThreadPool;

 /**

  * Implementation of the Bus Admin service.

  *

  * @author Kuali Rice Team (rice.collab@kuali.org)

  */

 public class BusAdminServiceImpl extends BaseLifecycle implements BusAdminService {

     private static final org.apache.log4j.Logger LOG = org.apache.log4j.Logger.getLogger(BusAdminServiceImpl.class);

     private KSBThreadPool threadPool;

     public void setThreadPool(KSBThreadPool threadPool) {

             this.threadPool = threadPool;

     }

     protected KSBThreadPool getThreadPool() {

             return this.threadPool;

     }

     @Override

     public void ping() {

         LOG.info("ping called");

     }

     @Override

     public void setCorePoolSize(int corePoolSize) {

             if (corePoolSize < 0) {

             throw new RiceIllegalArgumentException("corePoolSize < 0");

         }

         LOG.info("Setting core pool size to " + corePoolSize);

             getThreadPool().setCorePoolSize(corePoolSize);

     }

     @Override

     public void setMaximumPoolSize(int maxPoolSize) {

             if (maxPoolSize < 0) {

             throw new RiceIllegalArgumentException("maxPoolSize < 0");

         }

             LOG.info("Setting max pool size to " + maxPoolSize);

             if (maxPoolSize < getThreadPool().getCorePoolSize()) {

                     maxPoolSize = getThreadPool().getCorePoolSize();

             }

             getThreadPool().setMaximumPoolSize(maxPoolSize);

     }

     @Override

     public void setConfigProperty(String propertyName, String propertyValue) {

             if (StringUtils.isBlank(propertyName)) {

             throw new RiceIllegalArgumentException("propertyName is null or blank");

         }

         String originalValue = ConfigContext.getCurrentContextConfig().getProperty(propertyName);

             LOG.info("Changing config property '" + propertyName + "' from " + originalValue + " to " + propertyValue);

             if (propertyValue == null) {

                     ConfigContext.getCurrentContextConfig().removeProperty(propertyName);

             } else {

                     ConfigContext.getCurrentContextConfig().putProperty(propertyName, propertyValue);

             }

     }

     @Override

     public void start() throws Exception {

             if (getThreadPool() == null) {

                     throw new IllegalStateException("The threadPool has not been set on the busAdminService");

             }

             setStarted(true);

     }

     @Override

     public void stop() throws Exception {

             setStarted(false);

     }

 }