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package com.sun.xml.ws.server;
import com.sun.istack.NotNull;
import com.sun.istack.Nullable;
import com.sun.xml.ws.api.message.Packet;
import com.sun.xml.ws.api.pipe.TubeCloner;
import com.sun.xml.ws.api.pipe.helper.AbstractTubeImpl;
import com.sun.xml.ws.api.server.*;
import com.sun.xml.ws.resources.ServerMessages;
import com.sun.xml.ws.server.provider.ProviderInvokerTube;
import com.sun.xml.ws.server.sei.SEIInvokerTube;
import javax.xml.ws.WebServiceContext;
import javax.xml.ws.WebServiceException;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
/**
* Base code for {@link ProviderInvokerTube} and {@link SEIInvokerTube}.
*
* <p>
* This hides {@link InstanceResolver} and performs a set up
* necessary for {@link WebServiceContext} to correctly.
*
* @author Kohsuke Kawaguchi
*/
public abstract class InvokerTube<T> extends AbstractTubeImpl {
private final Invoker invoker;
private WSEndpoint endpoint;
protected InvokerTube(Invoker invoker) {
this.invoker = invoker;
}
public void setEndpoint(WSEndpoint endpoint) {
this.endpoint = endpoint;
WSWebServiceContext webServiceContext = new AbstractWebServiceContext(endpoint) {
public @Nullable Packet getRequestPacket() {
Packet p = packets.get();
return p;
}
};
invoker.start(webServiceContext,endpoint);
}
protected WSEndpoint getEndpoint() {
return endpoint;
}
/**
* Returns the application object that serves the request.
*
public final @NotNull T getServant(Packet request) {
// this allows WebServiceContext to find this packet
packets.set(request);
return invoker.resolve(request);
}
*/
/**
* Returns the {@link Invoker} object that serves the request.
*/
public final @NotNull Invoker getInvoker(Packet request) {
return wrapper;
}
/**
* processRequest() and processResponse() do not share any instance variables
* while processing the request. {@link InvokerTube} is stateless and terminal,
* so no need to create copies.
*/
public final AbstractTubeImpl copy(TubeCloner cloner) {
cloner.add(this,this);
return this;
}
public void preDestroy() {
invoker.dispose();
}
/**
* Heart of {@link WebServiceContext}.
* Remembers which thread is serving which packet.
*/
private static final ThreadLocal<Packet> packets = new ThreadLocal<Packet>();
/**
* This method can be called while the user service is servicing the request
* synchronously, to obtain the current request packet.
*
* <p>
* This is primarily designed for {@link StatefulInstanceResolver}. Use with care.
*/
public static @NotNull Packet getCurrentPacket() {
Packet packet = packets.get();
if(packet==null)
throw new WebServiceException(ServerMessages.NO_CURRENT_PACKET());
return packet;
}
/**
* {@link Invoker} filter that sets and restores the current packet.
*/
private final Invoker wrapper = new Invoker() {
@Override
public Object invoke(Packet p, Method m, Object... args) throws InvocationTargetException, IllegalAccessException {
Packet old = set(p);
try {
return invoker.invoke(p, m, args);
} finally {
set(old);
}
}
@Override
public <T>T invokeProvider(Packet p, T arg) throws IllegalAccessException, InvocationTargetException {
Packet old = set(p);
try {
return invoker.invokeProvider(p, arg);
} finally {
set(old);
}
}
@Override
public <T>void invokeAsyncProvider(Packet p, T arg, AsyncProviderCallback cbak, WebServiceContext ctxt) throws IllegalAccessException, InvocationTargetException {
Packet old = set(p);
try {
invoker.invokeAsyncProvider(p, arg, cbak, ctxt);
} finally {
set(old);
}
}
private Packet set(Packet p) {
Packet old = packets.get();
packets.set(p);
return old;
}
};
}