org.apache.dubbo.rpc.protocol.rest.DubboHttpProtocolServer Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of dubbo Show documentation
Show all versions of dubbo Show documentation
The all in one project of dubbo
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 org.apache.dubbo.rpc.protocol.rest;
import org.apache.dubbo.common.URL;
import org.apache.dubbo.remoting.http.HttpBinder;
import org.apache.dubbo.remoting.http.HttpHandler;
import org.apache.dubbo.remoting.http.HttpServer;
import org.apache.dubbo.remoting.http.servlet.BootstrapListener;
import org.apache.dubbo.remoting.http.servlet.ServletManager;
import org.apache.dubbo.rpc.RpcContext;
import org.apache.dubbo.rpc.RpcException;
import org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher;
import org.jboss.resteasy.spi.ResteasyDeployment;
import javax.servlet.ServletConfig;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.Enumeration;
public class DubboHttpProtocolServer extends BaseRestProtocolServer {
private final HttpServletDispatcher dispatcher = new HttpServletDispatcher();
private final ResteasyDeployment deployment = new ResteasyDeployment();
private HttpBinder httpBinder;
private HttpServer httpServer;
// private boolean isExternalServer;
public DubboHttpProtocolServer(HttpBinder httpBinder) {
this.httpBinder = httpBinder;
}
@Override
protected void doStart(URL url) {
// TODO jetty will by default enable keepAlive so the xml config has no effect now
httpServer = httpBinder.bind(url, new RestHandler());
ServletContext servletContext = ServletManager.getInstance().getServletContext(url.getPort());
if (servletContext == null) {
servletContext = ServletManager.getInstance().getServletContext(ServletManager.EXTERNAL_SERVER_PORT);
}
if (servletContext == null) {
throw new RpcException("No servlet context found. If you are using server='servlet', " +
"make sure that you've configured " + BootstrapListener.class.getName() + " in web.xml");
}
servletContext.setAttribute(ResteasyDeployment.class.getName(), deployment);
try {
dispatcher.init(new SimpleServletConfig(servletContext));
} catch (ServletException e) {
throw new RpcException(e);
}
}
@Override
public void close() {
httpServer.close();
}
@Override
protected ResteasyDeployment getDeployment() {
return deployment;
}
private class RestHandler implements HttpHandler {
@Override
public void handle(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException {
RpcContext.getServiceContext().setRemoteAddress(request.getRemoteAddr(), request.getRemotePort());
dispatcher.service(request, response);
}
}
private static class SimpleServletConfig implements ServletConfig {
private final ServletContext servletContext;
public SimpleServletConfig(ServletContext servletContext) {
this.servletContext = servletContext;
}
@Override
public String getServletName() {
return "DispatcherServlet";
}
@Override
public ServletContext getServletContext() {
return servletContext;
}
@Override
public String getInitParameter(String s) {
return null;
}
@Override
public Enumeration getInitParameterNames() {
return new Enumeration() {
@Override
public boolean hasMoreElements() {
return false;
}
@Override
public Object nextElement() {
return null;
}
};
}
}
}