[AMQ-5397] Using authorization plugin with MQTT causes ClassCastException on client reconnect.

• Type: Bug
• Status: Closed
• Priority: Critical
• Resolution: Cannot Reproduce
• Affects Version/s: 5.10.0
• Component/s: Connector, MQTT
• Assignee: Unassigned
• Reporter: Christian Tytgat
• Created: 16/Oct/14 09:42
• Updated: 21/Oct/14 22:08
• Resolved: 21/Oct/14 22:08

Description

We have the following setup:

MQTT client (reproducible with at least mosquitto and fusesource) with cleanSession = false and QOS = 1 (important!)

AMQ with authentication/authorization plugin

        <plugins>
          <statisticsBrokerPlugin/>

          <simpleAuthenticationPlugin>
            <users>
              <authenticationUser username="${activemq.username}" password="${activemq.password}" groups="admins,everyone"/>
              <authenticationUser username="mcollective" password="secret" groups="mcollective,admins,everyone"/>
            </users>
          </simpleAuthenticationPlugin>
          <authorizationPlugin>
            <map>
              <authorizationMap>
                <authorizationEntries>
                  <authorizationEntry queue=">" write="admins" read="admins" admin="admins" />
                  <authorizationEntry topic=">" write="admins" read="admins" admin="admins" />
                  <authorizationEntry topic="mcollective.>" write="mcollective" read="mcollective" admin="mcollective" />
                  <authorizationEntry queue="mcollective.>" write="mcollective" read="mcollective" admin="mcollective" />
                  <authorizationEntry topic="ActiveMQ.Advisory.>" read="everyone" write="everyone" admin="everyone"/>
                </authorizationEntries>
              </authorizationMap>
            </map>
          </authorizationPlugin>
        </plugins>

No problem to connect for the first time, but when reconnecting with the same client ID, the connection fails each time:

2014-10-16 11:20:41,120 [MQ NIO Worker 3] WARN  Transport  - Transport Connection to: tcp://10.0.2.2:49479 failed: org.apache.activemq.transport.mqtt.MQTTProtocolException: Error recovering retained messages for m2mbox.macbookx.schedule: org.apache.activemq.security.AuthorizationDestinationFilter cannot be cast to org.apache.activemq.broker.region.Topic