|
ActiveMQ example source code file (ActiveMQPrefetchPolicy.java)
The ActiveMQ ActiveMQPrefetchPolicy.java source code/** * 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.slf4j.Logger; import org.slf4j.LoggerFactory; /** * Defines the prefetch message policies for different types of consumers * * @org.apache.xbean.XBean element="prefetchPolicy" * */ public class ActiveMQPrefetchPolicy extends Object implements Serializable { public static final int MAX_PREFETCH_SIZE = Short.MAX_VALUE - 1; public static final int DEFAULT_QUEUE_PREFETCH = 1000; public static final int DEFAULT_QUEUE_BROWSER_PREFETCH = 500; public static final int DEFAULT_DURABLE_TOPIC_PREFETCH = 100; public static final int DEFAULT_OPTIMIZE_DURABLE_TOPIC_PREFETCH=1000; public static final int DEFAULT_INPUT_STREAM_PREFETCH=100; public static final int DEFAULT_TOPIC_PREFETCH = MAX_PREFETCH_SIZE; private static final Logger LOG = LoggerFactory.getLogger(ActiveMQPrefetchPolicy.class); 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 = DEFAULT_QUEUE_PREFETCH; this.queueBrowserPrefetch = DEFAULT_QUEUE_BROWSER_PREFETCH; this.topicPrefetch = DEFAULT_TOPIC_PREFETCH; this.durableTopicPrefetch = DEFAULT_DURABLE_TOPIC_PREFETCH; this.optimizeDurableTopicPrefetch = DEFAULT_OPTIMIZE_DURABLE_TOPIC_PREFETCH; this.inputStreamPrefetch = DEFAULT_INPUT_STREAM_PREFETCH; } /** * @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); } public boolean equals(Object object){ if (object instanceof ActiveMQPrefetchPolicy){ ActiveMQPrefetchPolicy other = (ActiveMQPrefetchPolicy) object; return this.queuePrefetch == other.queuePrefetch && this.queueBrowserPrefetch == other.queueBrowserPrefetch && this.topicPrefetch == other.topicPrefetch && this.durableTopicPrefetch == other.durableTopicPrefetch && this.optimizeDurableTopicPrefetch == other.optimizeDurableTopicPrefetch && this.inputStreamPrefetch == other.inputStreamPrefetch; } return false; } } Other ActiveMQ examples (source code examples)Here is a short list of links related to this ActiveMQ ActiveMQPrefetchPolicy.java source code file: |
... this post is sponsored by my books ... | |
#1 New Release! |
FP Best Seller |
Copyright 1998-2021 Alvin Alexander, alvinalexander.com
All Rights Reserved.
A percentage of advertising revenue from
pages under the /java/jwarehouse
URI on this website is
paid back to open source projects.