org.apache.activemq.ActiveMQPrefetchPolicy 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.activemq;
import java.io.Serializable;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
/**
* Defines the prefetch message policies for different types of consumers
*
* @org.apache.xbean.XBean element="prefetchPolicy"
*
* @version $Revision: 1.3 $
*/
public class ActiveMQPrefetchPolicy implements Serializable {
private static final Log log = LogFactory.getLog(ActiveMQPrefetchPolicy.class);
private static final int MAX_PREFETCH_SIZE = (Short.MAX_VALUE -1);
private int queuePrefetch;
private int queueBrowserPrefetch;
private int topicPrefetch;
private int durableTopicPrefetch;
private int optimizeDurableTopicPrefetch;
private int inputStreamPrefetch;
private int maximumPendingMessageLimit;
/**
* Initialize default prefetch policies
*/
public ActiveMQPrefetchPolicy() {
this.queuePrefetch = 1000;
this.queueBrowserPrefetch = 500;
this.topicPrefetch = MAX_PREFETCH_SIZE;
this.durableTopicPrefetch = 100;
this.optimizeDurableTopicPrefetch=1000;
this.inputStreamPrefetch = 100;
}
/**
* @return Returns the durableTopicPrefetch.
*/
public int getDurableTopicPrefetch() {
return durableTopicPrefetch;
}
/**
* @param durableTopicPrefetch The durableTopicPrefetch to set.
*/
public void setDurableTopicPrefetch(int durableTopicPrefetch) {
this.durableTopicPrefetch = getMaxPrefetchLimit(durableTopicPrefetch);
}
/**
* @return Returns the queuePrefetch.
*/
public int getQueuePrefetch() {
return queuePrefetch;
}
/**
* @param queuePrefetch The queuePrefetch to set.
*/
public void setQueuePrefetch(int queuePrefetch) {
this.queuePrefetch = getMaxPrefetchLimit(queuePrefetch);
}
/**
* @return Returns the queueBrowserPrefetch.
*/
public int getQueueBrowserPrefetch() {
return queueBrowserPrefetch;
}
/**
* @param queueBrowserPrefetch The queueBrowserPrefetch to set.
*/
public void setQueueBrowserPrefetch(int queueBrowserPrefetch) {
this.queueBrowserPrefetch = getMaxPrefetchLimit(queueBrowserPrefetch);
}
/**
* @return Returns the topicPrefetch.
*/
public int getTopicPrefetch() {
return topicPrefetch;
}
/**
* @param topicPrefetch The topicPrefetch to set.
*/
public void setTopicPrefetch(int topicPrefetch) {
this.topicPrefetch = getMaxPrefetchLimit(topicPrefetch);
}
/**
* @return Returns the optimizeDurableTopicPrefetch.
*/
public int getOptimizeDurableTopicPrefetch(){
return optimizeDurableTopicPrefetch;
}
/**
* @param optimizeAcknowledgePrefetch The optimizeDurableTopicPrefetch to set.
*/
public void setOptimizeDurableTopicPrefetch(int optimizeAcknowledgePrefetch){
this.optimizeDurableTopicPrefetch=optimizeAcknowledgePrefetch;
}
public int getMaximumPendingMessageLimit() {
return maximumPendingMessageLimit;
}
/**
* Sets how many messages a broker will keep around, above the prefetch limit, for non-durable
* topics before starting to discard older messages.
*/
public void setMaximumPendingMessageLimit(int maximumPendingMessageLimit) {
this.maximumPendingMessageLimit = maximumPendingMessageLimit;
}
private int getMaxPrefetchLimit(int value) {
int result = Math.min(value, MAX_PREFETCH_SIZE);
if (result < value) {
log.warn("maximum prefetch limit has been reset from " + value + " to " + MAX_PREFETCH_SIZE);
}
return result;
}
public void setAll(int i) {
this.durableTopicPrefetch=i;
this.queueBrowserPrefetch=i;
this.queuePrefetch=i;
this.topicPrefetch=i;
this.inputStreamPrefetch=1;
this.optimizeDurableTopicPrefetch=i;
}
public int getInputStreamPrefetch() {
return inputStreamPrefetch;
}
public void setInputStreamPrefetch(int inputStreamPrefetch) {
this.inputStreamPrefetch = getMaxPrefetchLimit(inputStreamPrefetch);
}
}