Package org.apache.activemq.broker.jmx

Source Code of org.apache.activemq.broker.jmx.SubscriptionView

/**
* 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 javax.jms.InvalidSelectorException;

import org.apache.activemq.broker.region.Subscription;
import org.apache.activemq.command.ActiveMQDestination;
import org.apache.activemq.command.ConsumerInfo;

/**
* @version $Revision: 1.5 $
*/
public class SubscriptionView implements SubscriptionViewMBean {

    protected final Subscription subscription;
    protected final String clientId;

    /**
     * Constructor
     *
     * @param subs
     */
    public SubscriptionView(String clientId, Subscription subs) {
        this.clientId = clientId;
        this.subscription = subs;
    }

    /**
     * @return the clientId
     */
    public String getClientId() {
        return clientId;
    }

    /**
     * @return the id of the Connection the Subscription is on
     */
    public String getConnectionId() {
        ConsumerInfo info = getConsumerInfo();
        if (info != null) {
            return info.getConsumerId().getConnectionId();
        }
        return "NOTSET";
    }

    /**
     * @return the id of the Session the subscription is on
     */
    public long getSessionId() {
        ConsumerInfo info = getConsumerInfo();
        if (info != null) {
            return info.getConsumerId().getSessionId();
        }
        return 0;
    }

    /**
     * @return the id of the Subscription
     */
    public long getSubcriptionId() {
        ConsumerInfo info = getConsumerInfo();
        if (info != null) {
            return info.getConsumerId().getValue();
        }
        return 0;
    }

    /**
     * @return the destination name
     */
    public String getDestinationName() {
        ConsumerInfo info = getConsumerInfo();
        if (info != null) {
            ActiveMQDestination dest = info.getDestination();
            return dest.getPhysicalName();
        }
        return "NOTSET";
    }

    public String getSelector() {
        if (subscription != null) {
            return subscription.getSelector();
        }
        return null;
    }

    public void setSelector(String selector) throws InvalidSelectorException, UnsupportedOperationException {
        if (subscription != null) {
            subscription.setSelector(selector);
        } else {
            throw new UnsupportedOperationException("No subscription object");
        }
    }

    /**
     * @return true if the destination is a Queue
     */
    public boolean isDestinationQueue() {
        ConsumerInfo info = getConsumerInfo();
        if (info != null) {
            ActiveMQDestination dest = info.getDestination();
            return dest.isQueue();
        }
        return false;
    }

    /**
     * @return true of the destination is a Topic
     */
    public boolean isDestinationTopic() {
        ConsumerInfo info = getConsumerInfo();
        if (info != null) {
            ActiveMQDestination dest = info.getDestination();
            return dest.isTopic();
        }
        return false;
    }

    /**
     * @return true if the destination is temporary
     */
    public boolean isDestinationTemporary() {
        ConsumerInfo info = getConsumerInfo();
        if (info != null) {
            ActiveMQDestination dest = info.getDestination();
            return dest.isTemporary();
        }
        return false;
    }

    /**
     * @return true if the subscriber is active
     */
    public boolean isActive() {
        return true;
    }

    /**
     * The subscription should release as may references as it can to help the
     * garbage collector reclaim memory.
     */
    public void gc() {
        if (subscription != null) {
            subscription.gc();
        }
    }

    /**
     * @return whether or not the subscriber is retroactive or not
     */
    public boolean isRetroactive() {
        ConsumerInfo info = getConsumerInfo();
        return info != null ? info.isRetroactive() : false;
    }

    /**
     * @return whether or not the subscriber is an exclusive consumer
     */
    public boolean isExclusive() {
        ConsumerInfo info = getConsumerInfo();
        return info != null ? info.isExclusive() : false;
    }

    /**
     * @return whether or not the subscriber is durable (persistent)
     */
    public boolean isDurable() {
        ConsumerInfo info = getConsumerInfo();
        return info != null ? info.isDurable() : false;
    }

    /**
     * @return whether or not the subscriber ignores local messages
     */
    public boolean isNoLocal() {
        ConsumerInfo info = getConsumerInfo();
        return info != null ? info.isNoLocal() : false;
    }

    /**
     * @return the maximum number of pending messages allowed in addition to the
     *         prefetch size. If enabled to a non-zero value then this will
     *         perform eviction of messages for slow consumers on non-durable
     *         topics.
     */
    public int getMaximumPendingMessageLimit() {
        ConsumerInfo info = getConsumerInfo();
        return info != null ? info.getMaximumPendingMessageLimit() : 0;
    }

    /**
     * @return the consumer priority
     */
    public byte getPriority() {
        ConsumerInfo info = getConsumerInfo();
        return info != null ? info.getPriority() : 0;
    }

    /**
     * @return the name of the consumer which is only used for durable
     *         consumers.
     */
    public String getSubcriptionName() {
        ConsumerInfo info = getConsumerInfo();
        return info != null ? info.getSubscriptionName() : null;
    }

    /**
     * @return number of messages pending delivery
     */
    public int getPendingQueueSize() {
        return subscription != null ? subscription.getPendingQueueSize() : 0;
    }

    /**
     * @return number of messages dispatched
     */
    public int getDispatchedQueueSize() {
        return subscription != null ? subscription.getDispatchedQueueSize() : 0;
    }

    /**
     * @return number of messages that matched the subscription
     */
    public long getDispachedCounter() {
        return subscription != null ? subscription.getDispatchedCounter() : 0;
    }

    /**
     * @return number of messages that matched the subscription
     */
    public long getEnqueueCounter() {
        return subscription != null ? subscription.getEnqueueCounter() : 0;
    }

    /**
     * @return number of messages queued by the client
     */
    public long getDequeueCounter() {
        return subscription != null ? subscription.getDequeueCounter() : 0;
    }

    protected ConsumerInfo getConsumerInfo() {
        return subscription != null ? subscription.getConsumerInfo() : null;
    }

    /**
     * @return pretty print
     */
    public String toString() {
        return "SubscriptionView: " + getClientId() + ":" + getConnectionId();
    }

    /**
     */
    public int getPrefetchSize() {
        return subscription != null ? subscription.getPrefetchSize() : 0;
    }

}
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