Hi All,
I have been asked to help with an upgrade to an existing system that
uses ActiveMQ and is being moved from version 5.14 to 5.18.
Unfortunately I don't know much about the system (or ActiveMQ) and
everyone else seems to know even less.
When the new ActiveMQ version is deployed there are errors because the
ActiveMQComponent class (and activemq-camel.jar) no longer exists. To
fix this, I changed the XML configuration files to use JSMComponent.
This was fairly simple, but I had to explicitly add a connection
factory to some beans (it seems that on ActiveMQComponent you could
specify the username, password and bokerURL directly on the
component).
With that done, the system starts. However, we seem to be missing a
lot of messages (in fact, it looks like only the first message sent to
any topic appears in the logs).
Does anyone have any suggestion of what might be wrong? I apologise
for my cluelessness here.
If it's any help, here is an example of a fragment of XML that was
changed:
<bean id="sa-broker1"
class="org.apache.activemq.camel.component.ActiveMQComponent" >
<property name="brokerURL" value="${sa_broker1.URL}"/>
<property name="username" value="${sa_broker1.user}"/>
<property name="password" value="${${sa_broker1.user}}"/>
</bean>
was changed to
<bean id="sa-broker1" class="org.apache.camel.component.jms.JmsComponent" >
<property name="connectionFactory">
<bean class="org.apache.activemq.ActiveMQConnectionFactory">
<property name="brokerURL" value="${sa_broker1.URL}"/>
<property name="userName" value="${sa_broker1.user}"/>
<property name="password" value="${${sa_broker1.user}}"/>
</bean>
</property>
</bean>
Finally, I tried to start jconsole as that seemed to be a way to
examine what was hapening internally. While I got jconsole to start
(over ssh) there was no local connection visible, despite useJmx being
"true". Also, there is no error in the AMQ logs (the brokers - the
system uses 3 - seem to start and run with as before).
Thanks,
Andrew
PS Maybe this is more a Camel issue than an ActiveMQ issue? If so,
more apologies, and where should I be looking for support?
--
*To follow ISTI news and updates please subscribe to our newsletter
"the isti letter" at https://www.isti.com/newsletter-sign-up
<https://www.isti.com/newsletter-sign-up>.*
