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<beans
        xmlns="http://www.springframework.org/schema/beans"
        xmlns:amq="http://activemq.apache.org/schema/core"
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
  http://activemq.apache.org/schema/core http://activemq.apache.org/schema/core/activemq-core.xsd">

    <!-- Allows us to use system properties as variables in this configuration file -->
    <bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
        <property name="systemPropertiesModeName" value="SYSTEM_PROPERTIES_MODE_OVERRIDE" />
        <!-- By default, use the data/tmp/activemq directory for on-disk storage -->
        <property name="properties">
            <value>
                activemq.data=/opt/opennms/data/tmp/activemq
            </value>
        </property>
    </bean>

    <!--
        The <broker> element is used to configure the ActiveMQ broker.
    -->
    <broker xmlns="http://activemq.apache.org/schema/core" brokerName="localhost" dataDirectory="${activemq.data}">
        <plugins>
            <bean id="openNMSJaasBrokerPlugin" class="org.opennms.netmgt.activemq.auth.OpenNMSJaasBrokerPlugin" xmlns="http://www.springframework.org/schema/beans" />

            <authorizationPlugin>
                <map>
                    <authorizationMap>
                        <authorizationEntries>
                            <!-- Users in the admin role can read/write/create any queue/topic -->
                            <authorizationEntry queue=">" read="admin" write="admin" admin="admin" />
                            <authorizationEntry topic=">" read="admin" write="admin" admin="admin"/>
                            <!-- Users in the minion role can write/create queues that are not keyed by location -->
                            <authorizationEntry queue="OpenNMS.*.*" write="minion" admin="minion" />
                            <!-- Users in the minion role can read/create from queues that are keyed by location -->
                            <authorizationEntry queue="OpenNMS.*.*.*" read="minion" admin="minion" />
                            <!-- Users in the minion role can read/write/create advisory topics -->
                            <authorizationEntry topic="ActiveMQ.Advisory.>" read="minion" write="minion" admin="minion"/>
                        </authorizationEntries>
                        <!-- Allow all users to read/write/create temporary destinations (by omitting a <tempDestinationAuthorizationEntry>) -->
                    </authorizationMap>
                </map>
            </authorizationPlugin>
        </plugins>

        <!--
            For better performances use VM cursor and small memory limit.
            For more information, see:

            http://activemq.apache.org/message-cursors.html

            Also, if your producer is "hanging", it's probably due to producer flow control.
            For more information, see:
            http://activemq.apache.org/producer-flow-control.html
        -->

        <destinationPolicy>
            <policyMap>
                <policyEntries>
                    <policyEntry topic=">" producerFlowControl="true">
                        <!-- The constantPendingMessageLimitStrategy is used to prevent
                             slow topic consumers to block producers and affect other consumers
                             by limiting the number of messages that are retained
                             For more information, see:
    
                             http://activemq.apache.org/slow-consumer-handling.html
    
                        -->
                        <pendingMessageLimitStrategy>
                            <constantPendingMessageLimitStrategy limit="1000"/>
                        </pendingMessageLimitStrategy>
                    </policyEntry>
                    <policyEntry queue=">" producerFlowControl="true" memoryLimit="1mb">
                        <!-- Use VM cursor for better latency
                             For more information, see:
      
                             http://activemq.apache.org/message-cursors.html
      
                        <pendingQueuePolicy>
                          <vmQueueCursor/>
                        </pendingQueuePolicy>
                        -->
                        <!--
                          Change the dead-letter strategy to discard messages instead 
                          of storing them in the DLQ. You can comment out this policyEntry
                          to reenable the DLQ for troubleshooting.
                        -->
                        <deadLetterStrategy>
                            <discarding/>
                        </deadLetterStrategy>
                    </policyEntry>
                </policyEntries>
            </policyMap>
        </destinationPolicy>


        <!--
            The managementContext is used to configure how ActiveMQ is exposed in
            JMX. By default, ActiveMQ uses the MBean server that is started by
            the JVM. For more information, see:

            http://activemq.apache.org/jmx.html
        -->
        <managementContext>
            <managementContext createConnector="false"/>
        </managementContext>

        <!--
            Configure message persistence for the broker. The default persistence
            mechanism is the KahaDB store (identified by the kahaDB tag).
            For more information, see:

            http://activemq.apache.org/persistence.html
        -->
        <persistenceAdapter>
            <kahaDB directory="${activemq.data}/kahadb"/>
        </persistenceAdapter>


        <!--
          The systemUsage controls the maximum amount of space the broker will
          use before slowing down producers. For more information, see:
          http://activemq.apache.org/producer-flow-control.html
          If using ActiveMQ embedded - the following limits could safely be used:
      -->
        <systemUsage>
            <systemUsage>
                <memoryUsage>
                    <memoryUsage limit="20 mb"/>
                </memoryUsage>
                <storeUsage>
                    <storeUsage limit="1 gb"/>
                </storeUsage>
                <tempUsage>
                    <tempUsage limit="100 mb"/>
                </tempUsage>
            </systemUsage>
        </systemUsage>

        <!--
            The transport connectors expose ActiveMQ over a given protocol to
            clients and other brokers. For more information, see:

            http://activemq.apache.org/configuring-transports.html
        -->
        <transportConnectors>
            <transportConnector name="vm" uri="vm://localhost"/>
            <transportConnector name="openwire" uri="tcp://0.0.0.0:61616?useJmx=false&amp;maximumConnections=1000&amp;wireformat.maxFrameSize=104857600"/>
        </transportConnectors>

        <!-- destroy the spring context on shutdown to stop jetty -->
        <shutdownHooks>
            <bean xmlns="http://www.springframework.org/schema/beans" class="org.apache.activemq.hooks.SpringContextHook" />
        </shutdownHooks>

    </broker>

    <!--
        Enable web consoles, REST and Ajax APIs and demos

        Take a look at ${ACTIVEMQ_HOME}/conf/jetty.xml for more details
    -->
    <!--<import resource="jetty.xml"/> -->

</beans>




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