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/*
 * Copyright (c) 1997, 2020 Oracle and/or its affiliates. All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Distribution License v. 1.0, which is available at
 * http://www.eclipse.org/org/documents/edl-v10.php.
 *
 * SPDX-License-Identifier: BSD-3-Clause
 */

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 jakarta.xml.ws.BindingProvider;
import jakarta.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); } }





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