/*
* Copyright 1999-2011 Alibaba Group.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.alibaba.dubbo.rpc.protocol.webservice;
import java.io.IOException;
import java.net.SocketTimeoutException;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.cxf.bus.extension.ExtensionManagerBus;
import org.apache.cxf.endpoint.Client;
import org.apache.cxf.frontend.ClientProxy;
import org.apache.cxf.frontend.ClientProxyFactoryBean;
import org.apache.cxf.frontend.ServerFactoryBean;
import org.apache.cxf.interceptor.Fault;
import org.apache.cxf.transport.http.HTTPConduit;
import org.apache.cxf.transport.http.HTTPTransportFactory;
import org.apache.cxf.transport.http.HttpDestinationFactory;
import org.apache.cxf.transport.servlet.ServletController;
import org.apache.cxf.transport.servlet.ServletDestinationFactory;
import org.apache.cxf.transports.http.configuration.HTTPClientPolicy;
import org.springframework.remoting.RemoteAccessException;
import com.alibaba.dubbo.common.Constants;
import com.alibaba.dubbo.common.URL;
import com.alibaba.dubbo.remoting.http.HttpBinder;
import com.alibaba.dubbo.remoting.http.HttpHandler;
import com.alibaba.dubbo.remoting.http.HttpServer;
import com.alibaba.dubbo.remoting.http.servlet.DispatcherServlet;
import com.alibaba.dubbo.rpc.RpcContext;
import com.alibaba.dubbo.rpc.RpcException;
import com.alibaba.dubbo.rpc.protocol.AbstractProxyProtocol;
/**
* WebServiceProtocol.
*
* @author netcomm
*/
public class WebServiceProtocol extends AbstractProxyProtocol {
public static final int DEFAULT_PORT = 80;
private final Map<String, HttpServer> serverMap = new ConcurrentHashMap<String, HttpServer>();
private final ExtensionManagerBus bus = new ExtensionManagerBus();
private final HTTPTransportFactory transportFactory = new HTTPTransportFactory(bus);
private HttpBinder httpBinder;
public WebServiceProtocol() {
super(Fault.class);
bus.setExtension(new ServletDestinationFactory(), HttpDestinationFactory.class);
}
public void setHttpBinder(HttpBinder httpBinder) {
this.httpBinder = httpBinder;
}
public int getDefaultPort() {
return DEFAULT_PORT;
}
private class WebServiceHandler implements HttpHandler {
private volatile ServletController servletController;
public void handle(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException {
if (servletController == null) {
HttpServlet httpServlet = DispatcherServlet.getInstance();
if (httpServlet == null) {
response.sendError(500, "No such DispatcherServlet instance.");
return;
}
synchronized (this) {
if (servletController == null) {
servletController = new ServletController(transportFactory.getRegistry(), httpServlet.getServletConfig(), httpServlet);
}
}
}
RpcContext.getContext().setRemoteAddress(request.getRemoteAddr(), request.getRemotePort());
servletController.invoke(request, response);
}
}
protected <T> Runnable doExport(T impl, Class<T> type, URL url) throws RpcException {
String addr = url.getIp() + ":" + url.getPort();
HttpServer httpServer = serverMap.get(addr);
if (httpServer == null) {
httpServer = httpBinder.bind(url, new WebServiceHandler());
serverMap.put(addr, httpServer);
}
final ServerFactoryBean serverFactoryBean = new ServerFactoryBean();
serverFactoryBean.setServiceClass(type);
serverFactoryBean.setAddress(url.getAbsolutePath());
serverFactoryBean.setServiceBean(impl);
serverFactoryBean.setDestinationFactory(transportFactory);
serverFactoryBean.setBus(bus);
serverFactoryBean.create();
return new Runnable() {
public void run() {
serverFactoryBean.destroy();
}
};
}
@SuppressWarnings("unchecked")
protected <T> T doRefer(final Class<T> serviceType, final URL url) throws RpcException {
ClientProxyFactoryBean proxyFactoryBean = new ClientProxyFactoryBean();
proxyFactoryBean.setServiceClass(serviceType);
proxyFactoryBean.setAddress(url.setProtocol("http").toIdentityString());
proxyFactoryBean.setBus(bus);
T ref = (T) proxyFactoryBean.create();
Client proxy = ClientProxy.getClient(ref);
HTTPConduit conduit = (HTTPConduit) proxy.getConduit();
HTTPClientPolicy policy = new HTTPClientPolicy();
policy.setConnectionTimeout(url.getParameter(Constants.CONNECT_TIMEOUT_KEY, Constants.DEFAULT_CONNECT_TIMEOUT));
policy.setReceiveTimeout(url.getParameter(Constants.TIMEOUT_KEY, Constants.DEFAULT_TIMEOUT));
conduit.setClient(policy);
return ref;
}
protected int getErrorCode(Throwable e) {
if (e instanceof Fault) {
e = e.getCause();
}
if (e instanceof SocketTimeoutException) {
return RpcException.TIMEOUT_EXCEPTION;
} else if (e instanceof IOException) {
return RpcException.NETWORK_EXCEPTION;
}
return super.getErrorCode(e);
}
}