ActiveMQ example source code file (AbortSlowConsumerStrategyView.java)

This example ActiveMQ source code file (AbortSlowConsumerStrategyView.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

abortslowconsumerstrategy, abortslowconsumerstrategy, abortslowconsumerstrategyview, consumers, logger, management, objectname, objectname, opendataexception, slowconsumerentry, subscription, subscription, tabulardatasupport, tabulartype, tabulartype, util

The ActiveMQ AbortSlowConsumerStrategyView.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.jmx;

import org.apache.activemq.broker.region.Subscription;
import org.apache.activemq.broker.region.policy.AbortSlowConsumerStrategy;
import org.apache.activemq.broker.region.policy.SlowConsumerEntry;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import javax.management.ObjectName;
import javax.management.openmbean.CompositeType;
import javax.management.openmbean.OpenDataException;
import javax.management.openmbean.TabularData;
import javax.management.openmbean.TabularDataSupport;
import javax.management.openmbean.TabularType;
import java.util.Map;

public class AbortSlowConsumerStrategyView implements AbortSlowConsumerStrategyViewMBean {
    private static final Logger LOG = LoggerFactory.getLogger(AbortSlowConsumerStrategyView.class);
    private ManagedRegionBroker broker;
    private AbortSlowConsumerStrategy strategy;


    public AbortSlowConsumerStrategyView(ManagedRegionBroker managedRegionBroker, AbortSlowConsumerStrategy slowConsumerStrategy) {
        this.broker = managedRegionBroker;
        this.strategy = slowConsumerStrategy;
    }

    public long getMaxSlowCount() {
        return strategy.getMaxSlowCount();
    }

    public void setMaxSlowCount(long maxSlowCount) {
        strategy.setMaxSlowCount(maxSlowCount);
    }

    public long getMaxSlowDuration() {
        return strategy.getMaxSlowDuration();
    }

    public void setMaxSlowDuration(long maxSlowDuration) {
       strategy.setMaxSlowDuration(maxSlowDuration);
    }

    public long getCheckPeriod() {
        return strategy.getCheckPeriod();
    }

    public TabularData getSlowConsumers() throws OpenDataException {

        OpenTypeSupport.OpenTypeFactory factory = OpenTypeSupport.getFactory(SlowConsumerEntry.class);
        CompositeType ct = factory.getCompositeType();
        TabularType tt = new TabularType("SlowConsumers", "Table of current slow Consumers", ct, new String[] {"subscription" });
        TabularDataSupport rc = new TabularDataSupport(tt);
        
        int index = 0;
        Map<Subscription, SlowConsumerEntry> slowConsumers = strategy.getSlowConsumers();
        for (Map.Entry<Subscription, SlowConsumerEntry> entry : slowConsumers.entrySet()) {
            entry.getValue().setSubscription(broker.getSubscriberObjectName(entry.getKey()));
            rc.put(OpenTypeSupport.convert(entry.getValue()));
        }
        return rc;
    }

    public void abortConsumer(ObjectName consumerToAbort) {
        Subscription sub = broker.getSubscriber(consumerToAbort);
        if (sub != null) {
            LOG.info("aborting consumer via jmx: " + sub.getConsumerInfo().getConsumerId());           
            strategy.abortConsumer(sub, false);
        } else {
            LOG.warn("cannot resolve subscription matching name: " + consumerToAbort);
        }

    }

    public void abortConnection(ObjectName consumerToAbort) {
        Subscription sub = broker.getSubscriber(consumerToAbort);
        if (sub != null) {
            LOG.info("aborting consumer connection via jmx: " + sub.getConsumerInfo().getConsumerId().getConnectionId());
            strategy.abortConsumer(sub, true);
        } else {
            LOG.warn("cannot resolve subscription matching name: " + consumerToAbort);
        }
    }

    public void abortConsumer(String objectNameOfConsumerToAbort) {
        abortConsumer(toObjectName(objectNameOfConsumerToAbort));
    }

    public void abortConnection(String objectNameOfConsumerToAbort) {
        abortConnection(toObjectName(objectNameOfConsumerToAbort));
    }

    private ObjectName toObjectName(String objectName) {
        ObjectName result = null;
        try {
            result = new ObjectName(objectName);
        } catch (Exception e) {
            LOG.warn("cannot create subscription ObjectName to abort, from string: " + objectName);
        }
        return result;
    }
}