proxies.xml

<spring:beans xmlns="http://membrane-soa.org/proxies/1/"
              xmlns:spring="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-3.0.xsd
					    http://membrane-soa.org/proxies/1/ http://membrane-soa.org/schemas/proxies-1.xsd">

    <router>

        <transport>
            <ruleMatching />
            <exchangeStore />
            <dispatching />
            <reverseProxying />
            <openTelemetry sampleRate="1.0"> <!--globally registers OpenTelemetry for every api-->
                <otlpExporter host="localhost" port="4317" transport="grpc"/>
            </openTelemetry>
            <userFeature />
            <httpClient />
        </transport>

        <api port="2000">
            <target url="http://localhost:2001" />
        </api>

        <api port="2001" name="AccessControl">
            <target url="http://localhost:2002" />
        </api>

        <api port="2002" name="Validation">
            <target url="http://localhost:3000" />
        </api>

        <api port="3000" name="Replace with your Backend">
            <request>
                <!-- Print the request headers.
                     traceparents will be added to them
                     showing which spans were involved
                     in the exchange.                   -->
                <groovy>
                    println "Request headers:"
                    header.allHeaderFields.each {
                        print it
                    }
                    CONTINUE
                </groovy>
            </request>
            <response>
                <template>Hello from a faked backend!</template>
            </response>
            <return/>
        </api>
    </router>

</spring:beans>