IS XMPP broker supported in activemq version 5.7 and 5.8. I am able to create topic but during creation of queue it is throwing me exceptions.
Any help is appreciated.
thanks
Lokesh
The XMPP module is there is both v5.7 and v5.8. As of v5.8 its deprecated and won't be included going forward. The module is not well maintained and is quite tricky to get working correctly which is why we have chosen to drop it.
Since you haven't indicated what the exception is there no way to guess what might be going wrong. I'd suggest looking into one of the many other protocols that are well supported in AMQ like STOMP for instance.
Edit: From the exception you've given in the comments it looks as though the activemq-xmpp.jar is not located on the classpath. Make sure you put that jar into the proper location so your broker can find the fictory bean for the XMPP Transport.
Related
All of us know, Kafka is still using log4j 1.x jar files even though Log4j 1.x has reached End of Life in 2015 and is no longer supported. So it became obsolete vulnerability for Kafka.
Are there any ways to replace log4j 1.x in present Kafka (docker images) or Is there any development work is going on to replace these log4j1.x? If yes, is there any ETA provided by Kafka team?
Yes, there is active work to replace log4j, if not already done so. Please search Kafka JIRA.
Also refer to Kafka CVE list - https://kafka.apache.org/cve-list
And Confluent's own announcements - https://support.confluent.io/hc/en-us/articles/4412615410580-December-2021-Log4j-Vulnerabilities-Advisory
Regarding out of support versions of Kafka, that you're not willing to upgrade, then you can try replacing log4j directly with reload4j (I've not tried it), but of course, this will not handle nested dependencies very accurately.
Can kafka server be installed with dotnet?
I'm finding it goes with JVM. Without JVM can it work in dotnet tech stack?
Kafka Server requires the JVM, yes. It cannot run without the JVM.
Kafka Clients support multiple languages, including .NET
Currently microsoft kafka client is not actively developed/supported. Instead the author recommends to use rdkafka-dotnet It has better documentation and is easy to use
https://github.com/Microsoft/CSharpClient-for-Kafka
https://github.com/ah-/rdkafka-dotnet
But confluent has a great .net kafka library. It's easy to implement consumer groups and highly configurable.
https://www.nuget.org/packages/Confluent.Kafka/
I would like to use hornetQ server as stand-alone without JNDI.
I started hornetQ server and added 10 topics with jconsole.
Then I made a test that restart hornetQ server in a loop.
At the abour 10th restart hornetQ server lost all the topics it had.
(I'm using hornetQ client with spring)
Any idea what cause hornetQ to lost the topics? How could I avoid it?
You would need to provide a testcase showing it's either a bug or a configuration mistake you made. It's hard to say what's going on.
There was a recent bug fix about deleting JMS destinations though. I'm not sure it would be related to this.
I'm totally a newbie in Java Enterprise and I have a lot stuff yet to learn. Right now I'm working which involves JMS using JBoss and ActiveMQ. An application sends messages to queues in JBoss and my goal is to access those messages using any message broker (in this case I tried to use ActiveMQ). So I think it's better for me to embed ActiveMQ to JBoss. I used the link below as the guidance :
http://activemq.apache.org/integrating-apache-activemq-with-jboss.html
I followed every single steps in the guide except that I used JBoss 4.2.3 and ActiveMQ 5.1.1. If this problem results from the different version of the tools, I think I can't help it out because other versions seem does not work on my machine. When I run JBoss to test whether the embedding is working or not, I can't see anything running on port localhost:61616 which is the default port for ActiveMQ, although JBoss seems run well. My question is :
Is any one know how to fix this? Or has anyone ever experienced such problem?
Is there any way to access queue in Jboss?
If this question is pretty ambiguous or need more details, let me know. Thanks in advance for any help.
I'm quite sure the embedded broker is started (transport vm://localhost) which results in a working JMS broker for that VM. But this broker isn't reachable from outside (via tcp or anything else)
Do you see any error in the log when launching jboss? I managed to make it work with Jboss 4.2 and ActiveMQ 5.4, and once integrated it only gives you a small hint that is working correctly with some info message saying "broker started in port ..." .
Also you can try to use the sample producers and receivers in ActiveMQ to test if the queue is working correctly.
If you still have problems I can try to help
I need to use some EJBs which are deployed on JBoss version 4.x from another EJB deployed on JBoss version 3.2.x. Is this possible?
I ask because I have a third party application which uses some strange bridge's to do that and don't know why (though I haven't try to do this on my own).
This is unfortunately not possible. One of the major drawbacks of remote EJBs is that there is nothing in the specification that guarantees or even suggests any kind of interoperability between different vendors or between different EJB versions from the same vendor.
In practice I found that at least with JBoss AS it never works. Even minor upgrades break binary compatibility completely. There have been some very hacky attempts with special class loaders that are only been given access to the client libs of the target JBoss AS, but this is very tricky to get right.
I guess this "strange bridge" you are talking about is using such a trick. Kudos to whoever build that bridge for getting this to work at all.
See this topic I started on the JBoss community forum for some more details: http://community.jboss.org/message/587180