> Is there any way for me to be able to determine how many times the ActiveMQConnectionFactory attempted a reconnect?
No. That data is not exposed. > Is there a way to see immediately when a connection is broken and not after reconnection attempts have been made? Via JMS, no. However, you could potentially use a SessionFailureListener [1] on the underlying ClientSession. > One solution I thought of was to set reconnection attempts to "0" and when I receive an exception via the ExceptionListener I manually close the connection and try to establish a new one. However this doesn't seem like the right way to do this, and also seems really inefficient. This is actually a fairly common pattern as it's the only mechanism built directly into JMS to deal with asynchronous connection failures. Frameworks like Spring which integrate with JMS employ patterns like this. The reconnection functionality provided by the core JMS client shipped with ActiveMQ Artemis is designed to be transparent to applications which is the main reason why there's not much visibility into it. And even if there were visibility it would require implementation-specific code since this functionality goes beyond JMS. Using implementation-specific code is generally discouraged as it nullifies one of the main benefits of using an API like JMS in the first place - application portability. > I feel like I am not quite using the library in the right way. What I'm looking for is to be able to see when a connection is broken, how many reconnection attempts have been made, and when I am successfully reconnected. Any help/guidance would be greatly appreciated. Could you provide an explanation of why you want this information? Perhaps there is another way to accomplish your overall goal or perhaps there's an underlying assumption that needs adjustment. Justin [1] https://activemq.apache.org/components/artemis/documentation/javadocs/javadoc-latest/org/apache/activemq/artemis/api/core/client/SessionFailureListener.html On Mon, Sep 18, 2023 at 1:32 PM Westpfal, Thomas < thomas.westpf...@saabinc.com> wrote: > Hello, > > I am working on a Java application using > "org.apache.activemq:artemis-jms-client:2.11.0" which connects to multiple > Artemis brokers. An important part of my application is the ability to be > able to monitor the connections with the Artemis brokers. I am having > trouble determining some of the information I am looking for. > > The first thing I am trying to monitor is how many reconnection attempts > have been made after a connection has been broken. I have set my > reconnection attempts to "-1" on an ActiveMQConnectionFactory to try to > reconnect infinitely. The problem that I am having is that the > ActiveMQConnectionFactory doesn't appear to expose the number of > reconnection attempts that have been made. Is there any way for me to be > able to determine how many times the ActiveMQConnectionFactory attempted a > reconnect? > > The next thing I am trying to monitor is the number of broken connections > with a given broker. The javax JMS Connection allows you to configure a > ExceptionListener, however I find that this listener is only triggered once > the number of reconnection attempts has been exceeded. Is there a way to > see immediately when a connection is broken and not after reconnection > attempts have been made? > > One solution I thought of was to set reconnection attempts to "0" and when > I receive an exception via the ExceptionListener I manually close the > connection and try to establish a new one. However this doesn't seem like > the right way to do this, and also seems really inefficient. > > Finally, I am trying to determine if a connection has been reestablished. > There doesn't appear to be a way to determine if a connection has been > reestablished other than being able to successfully send or receive a > message. Is there a way to see this without first sending or receiving a > message? > > I feel like I am not quite using the library in the right way. What I'm > looking for is to be able to see when a connection is broken, how many > reconnection attempts have been made, and when I am successfully > reconnected. Any help/guidance would be greatly appreciated. > > Regards, > Tom > > > This message is marked Public. > > This e-mail (including attachments) contains contents owned by Saab Group > AB and/or its subsidiaries, affiliated companies or customers and covered > by the laws of Sweden, the US, or Canada (federal, state or provincial). > The information is intended to be confidential and may be legally > privileged. If you are not the intended recipient, you are hereby notified > that any retention, dissemination, distribution, interception or copying of > this communication is strictly prohibited and may subject you to further > legal action. Reply to the sender if you received this email by accident, > and then delete the email and any attachments. >
