0000150: JMS queue browser

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Category

Severity

Reproducibility

Date Submitted

Last Update

0000150

[Resin]

minor

always

05-09-05 00:00

11-30-05 14:44

Reporter

ferg

View Status

public

Assigned To

Priority

urgent

Resolution

fixed

Status

closed

Product Version

3.0.13

Summary

0000150: JMS queue browser

Description

RSN-144
(rep by Thomas Gennaro)

Are there any known problems with the javax.jms.QueueBrowser implementation in Resin 3.0.9? We have the code below in one of our servlets and the Queue count always shows 0 or 1 when we know that the # of items in the queue is well above that number because we are putting more items on the queue than are being removed with a MDB.

We are trying to add logic to a servlet so that it stops handling requests when the queue grows too large in order to prevent the server from running out of memory.

We are using MemoryQueue instead of JDBC right now b/c we haven't been able to get the JMS JDBC queueing to work with Oracle.

Any suggestions are greatly appreciated.

Regards,

Tom

QueueBrowser queueBrowser = queueSession.createBrowser(queue); // throws JMSException
            Enumeration enum = queueBrowser.getEnumeration();
            int i = 0;

            while (enum.hasMoreElements()) {
                i++;
                logger.debug("Queue Count: " + i);
                enum.nextElement();

            if (i <= 20) {
                // Moved to a point after the queuing of the message
                logger.debug("Queue at : " + i + " , which is under the limit: " +
                    20);
                jmsObjectMessage = queueSession.createObjectMessage(req);
                retVal = buildResponseMessage(tanum, timestamp, errorList);
                queueSender.send(jmsObjectMessage);
                incrementSuccessCount();
            } else {
                logger.info("Queue is at: " + i + " and the queueLimit is set to " + 20);
                logger.info("Not sending an immediate response");
            }

Additional Information

Attached Files

Relationships

Notes
(0000182) ferg 05-09-05 00:00	ejb/6270, ejb/6271

Issue History
Date Modified	Username	Field	Change
05-09-05 00:00	ferg	New Issue
11-30-05 00:00	administrator	Fixed in Version	=> 3.0.14
11-30-05 14:44	ferg	Status	resolved => closed

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