Hello,
Please find a diff below for the org.activemq.ActiveMQConnectionFactory
class to ensure that when the clientID is specified using a URL
parameter e.g. tcp://localhost:1244?jms.clientID=TestClientID it is set
for the connection. This seems like the only way to ensure that a client
ID is specified when using a message driven bean under WebSphere with a
persistent topic.
199a200,204
> // Ensure Client ID is set for the connection if it was
explicity specified for the factory
> if (clientID != null) {
> connection.setClientID(clientID);
> }
>
Regards,
Marcus
-----Original Message-----
From: Adrian Co [mailto:[EMAIL PROTECTED]
Sent: 27 December 2005 03:15 AM
To: activemq-dev@geronimo.apache.org
Subject: Re: svn commit: r358785 -
/incubator/activemq/trunk/activemq-core/src/main/java/org/activemq/broke
r/region/PrefetchSubscription.java
Sorry, my bad.
I've rolled back the changes to the position of
node.incrementReferenceCount, but I did maintain the change for
incrementPreloadSize, since this was causing the memory leak in the
subscription.
Hope this is ok.
[EMAIL PROTECTED] wrote:
>Hello,
>
>By adding an incrementReferenceCount and decrementReferenceCount to the
>PrefetchSubscription::dispatch method I have fixed the null message
>problem I was experiencing.
>
> private void dispatch(final MessageReference node) throws
>IOException {
> try {
>
> node.incrementReferenceCount();
>
> final Message message = node.getMessage();
> if( message == null ) {
> return;
> }
>
> // Make sure we can dispatch a message.
> if( canDispatch(node) ) {
>
> MessageDispatch md = createMessageDispatch(node,
>message);
> dispatched.addLast(node);
>
> node.incrementReferenceCount();
> incrementPreloadSize(node.getMessage().getSize());
>
> if( info.isDispatchAsync() ) {
> md.setConsumer(new Runnable(){
> public void run() {
> onDispatch(node, message);
> }
> });
> context.getConnection().dispatchAsync(md);
> } else {
> context.getConnection().dispatchSync(md);
> onDispatch(node, message);
> }
> }
> }
> finally {
> node.decrementReferenceCount();
> }
> }
>
>Regards,
>
>Marcus
>
>-----Original Message-----
>From: Hiram Chirino [mailto:[EMAIL PROTECTED]
>Sent: 23 December 2005 07:37 PM
>To: activemq-dev@geronimo.apache.org
>Cc: activemq-commits@geronimo.apache.org
>Subject: Re: svn commit: r358785 -
>/incubator/activemq/trunk/activemq-core/src/main/java/org/activemq/brok
>e
>r/region/PrefetchSubscription.java
>
>Hi Adrian,
>
>doing a getMessage() before incrementReferenceCount() is dangerous
>since the message could have been swapped out and the call to
>getMessage() will return null.
>Yes, I know there is a null check to see if the message is null, but
>that should only happen if the message was expired. Right now I think
>it's possible that we are going to have cases of where messages get
>swapped out and this code is going to think that the message has been
>expired.
>
>Regards,
>Hiram
>
>
>On Dec 23, 2005, at 4:48 AM, [EMAIL PROTECTED] wrote:
>
>
>
>>Author: aco
>>Date: Fri Dec 23 01:47:47 2005
>>New Revision: 358785
>>
>>URL: http://svn.apache.org/viewcvs?rev=358785&view=rev
>>Log:
>>Postpone incrementing of reference count and preload size, only after
>>we are sure that the message will be dispatched by the current
>>subscription. This is to prevent a memory leak type of scenario.
>>
>>Modified:
>> incubator/activemq/trunk/activemq-core/src/main/java/org/
>>activemq/broker/region/PrefetchSubscription.java
>>
>>Modified: incubator/activemq/trunk/activemq-core/src/main/java/org/
>>activemq/broker/region/PrefetchSubscription.java
>>URL: http://svn.apache.org/viewcvs/incubator/activemq/trunk/
>>activemq-core/src/main/java/org/activemq/broker/region/
>>PrefetchSubscription.java?rev=358785&r1=358784&r2=358785&view=diff
>>======================================================================
>>========
>>--- incubator/activemq/trunk/activemq-core/src/main/java/org/
>>activemq/broker/region/PrefetchSubscription.java (original)
>>+++ incubator/activemq/trunk/activemq-core/src/main/java/org/
>>activemq/broker/region/PrefetchSubscription.java Fri Dec 23
>>01:47:47 2005
>>@@ -239,19 +239,19 @@
>>
>> private void dispatch(final MessageReference node) throws
>>IOException {
>>
>>- node.incrementReferenceCount();
>>-
>> final Message message = node.getMessage();
>> if( message == null ) {
>> return;
>>- }
>>- incrementPreloadSize(node.getMessage().getSize());
>>+ }
>>
>> // Make sure we can dispatch a message.
>> if( canDispatch(node) ) {
>>
>> MessageDispatch md = createMessageDispatch(node,
>>message);
>> dispatched.addLast(node);
>>+
>>+ node.incrementReferenceCount();
>>+ incrementPreloadSize(node.getMessage().getSize());
>>
>> if( info.isDispatchAsync() ) {
>> md.setConsumer(new Runnable(){
>>
>>
>>
>
>
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