custom-backend.xml

custom-backend.xml

        <sequence name="custom-backend" xmlns="http://ws.apache.org/ns/synapse">
            <property name="REST_URL_POSTFIX" value="" scope="axis2"/>
            <call blocking="true">
                <endpoint name="JSONBackend" xmlns="http://ws.apache.org/ns/synapse">
                    <http method="get"   uri-template="http://localhost:3010/bookings" />
                </endpoint>
            </call>
            <property name="nexus_total" expression="json-eval($.bookings.total)" scope="default" type="STRING"/>
            
            <!-- Call WishqueEndpoint and extract the summary text -->
            <call blocking="true">
                <endpoint name="XMLBackend" xmlns="http://ws.apache.org/ns/synapse">
                    <http method="get"   uri-template="http://localhost:3011/metrics/summary" />
                </endpoint>
            </call>
            <property name="wishque_total" expression="//total/text()" scope="default" type="STRING"/>
            
            <!-- Construct the final JSON response -->
            <payloadFactory media-type="json">
                <format>{"bookings": {"nexus_total": "$1", "wishque_total": "$2"}}</format>
                <args>
                    <arg evaluator="xml" expression="get-property('nexus_total')"/>
                    <arg evaluator="xml" expression="get-property('wishque_total')"/>
                </args>
            </payloadFactory>
        </sequence>