<!--
    Licensed to the Apache Software Foundation (ASF) under one or more
    contributor license agreements.  See the NOTICE file distributed with
    this work for additional information regarding copyright ownership.
    The ASF licenses this file to You under the Apache License, Version 2.0
    (the "License"); you may not use this file except in compliance with
    the License.  You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

    Unless required by applicable law or agreed to in writing, software
    distributed under the License is distributed on an "AS IS" BASIS,
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.
-->
<!-- START SNIPPET: example -->
<beans
  xmlns="http://www.springframework.org/schema/beans"
  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="locations">
            <value>file:${activemq.conf}/credentials.properties</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}" id="broker">

        <destinationPolicy>
            <policyMap>
              <policyEntries>
                <policyEntry topic=">" >
                    <!-- 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>
              </policyEntries>
            </policyMap>
        </destinationPolicy>


        <!--
            Security hardening (disabled by default so the sample broker starts
            out-of-the-box). Uncomment the <plugins> block below to enforce:
              * JAAS authentication using the 'activemq' realm in conf/login.config
              * Destination-level authorization based on conf/groups.properties
              * Broker-side audit logging of connections, producers and consumers

            BEFORE ENABLING IN PRODUCTION:
              1. ROTATE the credentials in conf/users.properties. The default
                 'admin=admin' user is well-known and MUST NOT be used as-is.
              2. Tighten the authorizationMap below to match the destinations
                 you actually use; the defaults grant access only to 'admins'.
              3. Confirm every enabled transport requires credentials and that
                 clients are configured to send them.
              4. To also restrict ObjectMessage deserialization, set
                   ACTIVEMQ_OPTS="-Dorg.apache.activemq.SERIALIZABLE_PACKAGES=<csv>"
                 in bin/env (an empty value blocks ObjectMessage deserialization
                 entirely; specify only packages you explicitly trust).

            For more information, see:
              https://activemq.apache.org/security
        -->
        <!--
        <plugins>
            <jaasAuthenticationPlugin configuration="activemq" />

            <authorizationPlugin>
                <map>
                    <authorizationMap>
                        <authorizationEntries>
                            <authorizationEntry queue=">" read="admins" write="admins" admin="admins" />
                            <authorizationEntry topic=">" read="admins" write="admins" admin="admins" />
                            <authorizationEntry topic="ActiveMQ.Advisory.>" read="admins,users" write="admins,users" admin="admins,users" />
                        </authorizationEntries>
                    </authorizationMap>
                </map>
            </authorizationPlugin>

            <loggingBrokerPlugin logConnectionEvents="true"
                                 logProducerEvents="true"
                                 logConsumerEvents="true" />
        </plugins>
        -->

        <!--
            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 disabling caching and/or slowing down producers. For more information, see:
            http://activemq.apache.org/producer-flow-control.html
          -->
          <systemUsage>
            <systemUsage>
                <memoryUsage>
                    <memoryUsage percentOfJvmHeap="70" />
                </memoryUsage>
                <storeUsage>
                    <storeUsage limit="100 gb"/>
                </storeUsage>
                <tempUsage>
                    <tempUsage limit="50 gb"/>
                </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>
            <!--
                DOS protection, limit concurrent connections to 1000 and frame size to 100MB.

                WARNING: this openwire connector uses plain TCP and traffic is unencrypted. It is
                intended for initial testing only. For production deployments it is strongly
                recommended to use the SSL variant (ssl://) so that credentials and message
                payloads are not transmitted in cleartext.
            -->
            <transportConnector name="openwire" uri="tcp://0.0.0.0:61616?maximumConnections=1000&amp;wireFormat.maxFrameSize=104857600"/>
            <!--
                Additional transports are disabled by default to reduce the exposed attack surface.
                Uncomment only the protocols you actually need, and prefer the secured variants
                (openwire+ssl, amqp+ssl, stomp+ssl, mqtt+nio+ssl, wss) in production deployments.
            -->
            <!-- <transportConnector name="amqp" uri="amqp://0.0.0.0:5672?maximumConnections=1000&amp;wireFormat.maxFrameSize=104857600"/> -->
            <!-- <transportConnector name="stomp" uri="stomp://0.0.0.0:61613?maximumConnections=1000&amp;wireFormat.maxFrameSize=104857600"/> -->
            <!-- <transportConnector name="mqtt" uri="mqtt://0.0.0.0:1883?maximumConnections=1000&amp;wireFormat.maxFrameSize=104857600"/> -->
            <!-- <transportConnector name="ws" uri="ws://0.0.0.0:61614?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
        The web consoles requires by default login, you can disable this in the jetty.xml file

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

</beans>
<!-- END SNIPPET: example -->
