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package com.sun.xml.ws.transport;
import com.sun.xml.ws.api.EndpointAddress;
import com.sun.xml.ws.api.message.Packet;
import com.sun.xml.ws.api.pipe.*;
import com.sun.xml.ws.api.pipe.helper.AbstractTubeImpl;
import com.sun.istack.NotNull;
import com.sun.xml.ws.developer.HttpConfigFeature;
import javax.xml.ws.BindingProvider;
import javax.xml.ws.WebServiceFeature;
/**
* Proxy transport {@link Tube} and {@link Pipe} that lazily determines the
* actual transport pipe by looking at {@link Packet#endpointAddress}.
*
*
* This pseudo transport is used when there's no statically known endpoint address,
* and thus it's expected that the application will configure {@link BindingProvider}
* at runtime before making invocation.
*
*
* Since a typical application makes multiple invocations with the same endpoint
* address, this class implements a simple cache strategy to avoid re-creating
* transport pipes excessively.
*
* @author Kohsuke Kawaguchi
*/
public final class DeferredTransportPipe extends AbstractTubeImpl {
private Tube transport;
private EndpointAddress address;
// parameter to TransportPipeFactory
private final ClassLoader classLoader;
private final ClientTubeAssemblerContext context;
public DeferredTransportPipe(ClassLoader classLoader, ClientTubeAssemblerContext context) {
this.classLoader = classLoader;
this.context = context;
if (context.getBinding().getFeature(HttpConfigFeature.class) == null) {
context.getBinding().getFeatures().mergeFeatures(
new WebServiceFeature[] { new HttpConfigFeature() }, false);
}
//See if we can create the transport pipe from the available information.
try {
this.transport = TransportTubeFactory.create(classLoader, context);
this.address = context.getAddress();
} catch(Exception e) {
//No problem, transport will be initialized while processing the requests
}
}
public DeferredTransportPipe(DeferredTransportPipe that, TubeCloner cloner) {
super(that,cloner);
this.classLoader = that.classLoader;
this.context = that.context;
if(that.transport!=null) {
this.transport = cloner.copy(that.transport);
this.address = that.address;
}
}
public NextAction processException(@NotNull Throwable t) {
return transport.processException(t);
}
public NextAction processRequest(@NotNull Packet request) {
if(request.endpointAddress==address)
// cache hit
return transport.processRequest(request);
// cache miss
if(transport!=null) {
// delete the current entry
transport.preDestroy();
transport = null;
address = null;
}
// otherwise find out what transport will process this.
ClientTubeAssemblerContext newContext = new ClientTubeAssemblerContext(
request.endpointAddress,
context.getWsdlModel(),
context.getBindingProvider(),
context.getBinding(),
context.getContainer(),
context.getCodec().copy(),
context.getSEIModel(),
context.getSEI()
);
address = request.endpointAddress;
transport = TransportTubeFactory.create(classLoader, newContext);
// successful return from the above method indicates a successful pipe creation
assert transport!=null;
return transport.processRequest(request);
}
public NextAction processResponse(@NotNull Packet response) {
if (transport != null)
return transport.processResponse(response);
return doReturnWith(response);
}
public void preDestroy() {
if(transport!=null) {
transport.preDestroy();
transport = null;
address = null;
}
}
public DeferredTransportPipe copy(TubeCloner cloner) {
return new DeferredTransportPipe(this,cloner);
}
}