[jira] [Created] (CAMEL-7994) SJMSComponent effectively ignores setConnectionCount()

["Aaron Whiteside (JIRA)" <ji...@apache.org>]

Aaron Whiteside created CAMEL-7994:
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             Summary: SJMSComponent effectively ignores setConnectionCount()
                 Key: CAMEL-7994
                 URL: https://issues.apache.org/jira/browse/CAMEL-7994
             Project: Camel
          Issue Type: Bug
          Components: camel-sjms
    Affects Versions: 2.14.0
            Reporter: Aaron Whiteside


SJMSComponent effectively ignores setConnectionCount()

This is because the JmsProducer, by default, pre-populates sessions+producers on Producer.doStart(), which is called by the CamelContext in a single thread and the way the ConnectionFactoryResource is configured, it returns the most recently idle connection (So really it always returns the first connection opened).

This patch attached makes the ConnectionFactoryResource effectively return connections in a round-robbin. Unit test attached in included.

This is important because TCP has a certain overhead per socket which makes it impossible to achieve much more than 6~ messages a second, regardless of the CPU and IO resources available to a broker. To fully utilize a broker multiple connections must be opened.

This is also important if your ConnectionFactory represent a cluster (Like in the case of HornetQ), where subsequent connections are balanced across nodes in the cluster.



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