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ActiveMQ example source code file (Destination.java)

This example ActiveMQ source code file (Destination.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - ActiveMQ tags/keywords

deadletterstrategy, destinationstatistics, exception, exception, io, ioexception, message, messageack, messagereference, messagereference, producerinfo, producerinfo, slowconsumerstrategy, subscription, subscription, util

The ActiveMQ Destination.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.broker.region;

import java.io.IOException;
import java.util.List;
import org.apache.activemq.Service;
import org.apache.activemq.broker.ConnectionContext;
import org.apache.activemq.broker.ProducerBrokerExchange;
import org.apache.activemq.broker.region.policy.DeadLetterStrategy;
import org.apache.activemq.broker.region.policy.SharedDeadLetterStrategy;
import org.apache.activemq.broker.region.policy.SlowConsumerStrategy;
import org.apache.activemq.command.ActiveMQDestination;
import org.apache.activemq.command.Message;
import org.apache.activemq.command.MessageAck;
import org.apache.activemq.command.MessageDispatchNotification;
import org.apache.activemq.command.ProducerInfo;
import org.apache.activemq.store.MessageStore;
import org.apache.activemq.thread.Task;
import org.apache.activemq.usage.MemoryUsage;
import org.apache.activemq.usage.Usage;

/**
 * 
 */
public interface Destination extends Service, Task {

    public static final DeadLetterStrategy DEFAULT_DEAD_LETTER_STRATEGY = new SharedDeadLetterStrategy();
    public static final long DEFAULT_BLOCKED_PRODUCER_WARNING_INTERVAL = 30000;

    void addSubscription(ConnectionContext context, Subscription sub) throws Exception;

    void removeSubscription(ConnectionContext context, Subscription sub, long lastDeliveredSequenceId) throws Exception;

    void addProducer(ConnectionContext context, ProducerInfo info) throws Exception;

    void removeProducer(ConnectionContext context, ProducerInfo info) throws Exception;

    void send(ProducerBrokerExchange producerExchange, Message messageSend) throws Exception;

    void acknowledge(ConnectionContext context, Subscription sub, final MessageAck ack, final MessageReference node) throws IOException;

    void gc();

    ActiveMQDestination getActiveMQDestination();

    MemoryUsage getMemoryUsage();

    void dispose(ConnectionContext context) throws IOException;

    DestinationStatistics getDestinationStatistics();

    DeadLetterStrategy getDeadLetterStrategy();

    Message[] browse();

    String getName();

    MessageStore getMessageStore();

    boolean isProducerFlowControl();

    void setProducerFlowControl(boolean value);

    /**
     * Set's the interval at which warnings about producers being blocked by
     * resource usage will be triggered. Values of 0 or less will disable
     * warnings
     * 
     * @param blockedProducerWarningInterval the interval at which warning about
     *            blocked producers will be triggered.
     */
    public void setBlockedProducerWarningInterval(long blockedProducerWarningInterval);

    /**
     * 
     * @return the interval at which warning about blocked producers will be
     *         triggered.
     */
    public long getBlockedProducerWarningInterval();

    int getMaxProducersToAudit();

    void setMaxProducersToAudit(int maxProducersToAudit);

    int getMaxAuditDepth();

    void setMaxAuditDepth(int maxAuditDepth);

    boolean isEnableAudit();

    void setEnableAudit(boolean enableAudit);

    boolean isActive();

    int getMaxPageSize();

    public void setMaxPageSize(int maxPageSize);

    public int getMaxBrowsePageSize();

    public void setMaxBrowsePageSize(int maxPageSize);

    public boolean isUseCache();

    public void setUseCache(boolean useCache);

    public int getMinimumMessageSize();

    public void setMinimumMessageSize(int minimumMessageSize);

    public int getCursorMemoryHighWaterMark();

    public void setCursorMemoryHighWaterMark(int cursorMemoryHighWaterMark);

    /**
     * optionally called by a Subscriber - to inform the Destination its ready
     * for more messages
     */
    public void wakeup();

    /**
     * @return true if lazyDispatch is enabled
     */
    public boolean isLazyDispatch();

    /**
     * set the lazy dispatch - default is false
     * 
     * @param value
     */
    public void setLazyDispatch(boolean value);

    /**
     * Inform the Destination a message has expired
     * 
     * @param context
     * @param subs
     * @param node
     */
    void messageExpired(ConnectionContext context, Subscription subs, MessageReference node);

    /**
     * called when message is consumed
     * 
     * @param context
     * @param messageReference
     */
    void messageConsumed(ConnectionContext context, MessageReference messageReference);

    /**
     * Called when message is delivered to the broker
     * 
     * @param context
     * @param messageReference
     */
    void messageDelivered(ConnectionContext context, MessageReference messageReference);

    /**
     * Called when a message is discarded - e.g. running low on memory This will
     * happen only if the policy is enabled - e.g. non durable topics
     * 
     * @param context
     * @param messageReference
     * @param sub 
     */
    void messageDiscarded(ConnectionContext context, Subscription sub, MessageReference messageReference);

    /**
     * Called when there is a slow consumer
     * 
     * @param context
     * @param subs
     */
    void slowConsumer(ConnectionContext context, Subscription subs);

    /**
     * Called to notify a producer is too fast
     * 
     * @param context
     * @param producerInfo
     */
    void fastProducer(ConnectionContext context, ProducerInfo producerInfo);

    /**
     * Called when a Usage reaches a limit
     * 
     * @param context
     * @param usage
     */
    void isFull(ConnectionContext context, Usage usage);

    List<Subscription> getConsumers();

    /**
     * called on Queues in slave mode to allow dispatch to follow subscription
     * choice of master
     * 
     * @param messageDispatchNotification
     * @throws Exception
     */
    void processDispatchNotification(MessageDispatchNotification messageDispatchNotification) throws Exception;
    
    boolean isPrioritizedMessages();

    SlowConsumerStrategy getSlowConsumerStrategy();
}

Other ActiveMQ examples (source code examples)

Here is a short list of links related to this ActiveMQ Destination.java source code file:

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