Forwarding based on DNS name

[arra...@gmail.com]

We have two different DNS entries pointing to the same set of AWS endpoint - say abc.com and def.com. How should the configuration in proxies.xml look like in order to have the requests from abc.com routed to a different cluster in the backend? The "path" element only forwards by the url stub, and does not consider host names, right? Therefore in this case, the path cannot be used?

[Till Born]

Hello ramiah ariya,

sorry for the late response. If i understand you correctly you would like to decide the target of a service proxy dynamically based on the original Host header. You could take the following configuration as a basis for your undertaking

<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>

      <serviceProxy port="5559">
         <groovy>
            String host = exc.getOriginalHostHeaderHost()
            String destination = null
            if("abc.com".equals(host))
            destination = "https://predic8.com"
            if("def.com".equals(host))
            destination = "https://google.com"
            if(destination == null)
            destination = "https://defaultDomain.com"

            exc.getDestinations().clear()
            exc.getDestinations().add(destination + exc.getOriginalRequestUri())

            CONTINUE
         </groovy>
      </serviceProxy>
   </router>

</spring:beans>

This adds a groovy interceptor to a service proxy that does the following:

- get the original host header

- get the wanted destination based on this host value, or get a default destination

- configure the exchange target dynamically

With this you don't need a target node for this service proxy as the target is set by this groovy interceptor.

Wish you all the best,

Till

[tim.b...@devopsmakers.com]

This is pretty cool. I'm sure you could do something like this with a map too:

<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>

      <serviceProxy port="5559">
         <groovy>
            String host = exc.getOriginalHostHeaderHost()
            String destination = null

            def vhosts = [ abc.com:"https://predic8.com",

                           def.com:"https://google.com"]

            destination = vhosts.get(host, "https://defaultDomain.com")

            exc.getDestinations().clear()
            exc.getDestinations().add(destination + exc.getOriginalRequestUri())

            CONTINUE
         </groovy>
      </serviceProxy>
   </router>

</spring:beans>