org.apache.dubbo.rpc.protocol.hessian.HessianProtocol 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.hessian;
import org.apache.dubbo.common.URL;
import org.apache.dubbo.remoting.RemotingServer;
import org.apache.dubbo.remoting.http.HttpBinder;
import org.apache.dubbo.remoting.http.HttpHandler;
import org.apache.dubbo.rpc.ProtocolServer;
import org.apache.dubbo.rpc.RpcContext;
import org.apache.dubbo.rpc.RpcException;
import org.apache.dubbo.rpc.protocol.AbstractProxyProtocol;
import org.apache.dubbo.rpc.service.GenericService;
import org.apache.dubbo.rpc.support.ProtocolUtils;
import org.apache.dubbo.serialize.hessian.dubbo.Hessian2FactoryInitializer;
import com.caucho.hessian.HessianException;
import com.caucho.hessian.client.HessianConnectionException;
import com.caucho.hessian.client.HessianConnectionFactory;
import com.caucho.hessian.client.HessianProxyFactory;
import com.caucho.hessian.io.HessianMethodSerializationException;
import com.caucho.hessian.server.HessianSkeleton;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.net.SocketTimeoutException;
import java.util.ArrayList;
import java.util.Enumeration;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import static org.apache.dubbo.common.constants.CommonConstants.DEFAULT_TIMEOUT;
import static org.apache.dubbo.common.constants.CommonConstants.TIMEOUT_KEY;
import static org.apache.dubbo.remoting.Constants.CLIENT_KEY;
import static org.apache.dubbo.remoting.Constants.DEFAULT_EXCHANGER;
import static org.apache.dubbo.rpc.Constants.GENERIC_KEY;
import static org.apache.dubbo.rpc.protocol.hessian.Constants.DEFAULT_HESSIAN2_REQUEST;
import static org.apache.dubbo.rpc.protocol.hessian.Constants.DEFAULT_HESSIAN_OVERLOAD_METHOD;
import static org.apache.dubbo.rpc.protocol.hessian.Constants.DEFAULT_HTTP_CLIENT;
import static org.apache.dubbo.rpc.protocol.hessian.Constants.HESSIAN2_REQUEST_KEY;
import static org.apache.dubbo.rpc.protocol.hessian.Constants.HESSIAN_OVERLOAD_METHOD_KEY;
/**
* http rpc support.
*/
public class HessianProtocol extends AbstractProxyProtocol {
private final Map skeletonMap = new ConcurrentHashMap();
private HttpBinder httpBinder;
public HessianProtocol() {
super(HessianException.class);
}
public void setHttpBinder(HttpBinder httpBinder) {
this.httpBinder = httpBinder;
}
@Override
public int getDefaultPort() {
return 80;
}
@Override
protected Runnable doExport(T impl, Class type, URL url) throws RpcException {
String addr = getAddr(url);
ProtocolServer protocolServer = serverMap.get(addr);
if (protocolServer == null) {
RemotingServer remotingServer = httpBinder.bind(url, new HessianHandler());
serverMap.put(addr, new ProxyProtocolServer(remotingServer));
}
final String path = url.getAbsolutePath();
final HessianSkeleton skeleton = new HessianSkeleton(impl, type);
skeletonMap.put(path, skeleton);
final String genericPath = path + "/" + GENERIC_KEY;
skeletonMap.put(genericPath, new HessianSkeleton(impl, GenericService.class));
return new Runnable() {
@Override
public void run() {
skeletonMap.remove(path);
skeletonMap.remove(genericPath);
}
};
}
@Override
@SuppressWarnings("unchecked")
protected T doRefer(Class serviceType, URL url) throws RpcException {
String generic = url.getParameter(GENERIC_KEY);
boolean isGeneric = ProtocolUtils.isGeneric(generic) || serviceType.equals(GenericService.class);
if (isGeneric) {
RpcContext.getContext().setAttachment(GENERIC_KEY, generic);
url = url.setPath(url.getPath() + "/" + GENERIC_KEY);
}
HessianProxyFactory hessianProxyFactory = new HessianProxyFactory();
boolean isHessian2Request = url.getParameter(HESSIAN2_REQUEST_KEY, DEFAULT_HESSIAN2_REQUEST);
hessianProxyFactory.setHessian2Request(isHessian2Request);
boolean isOverloadEnabled = url.getParameter(HESSIAN_OVERLOAD_METHOD_KEY, DEFAULT_HESSIAN_OVERLOAD_METHOD);
hessianProxyFactory.setOverloadEnabled(isOverloadEnabled);
String client = url.getParameter(CLIENT_KEY, DEFAULT_HTTP_CLIENT);
if ("httpclient".equals(client)) {
HessianConnectionFactory factory = new HttpClientConnectionFactory();
factory.setHessianProxyFactory(hessianProxyFactory);
hessianProxyFactory.setConnectionFactory(factory);
} else if (client != null && client.length() > 0 && !DEFAULT_HTTP_CLIENT.equals(client)) {
throw new IllegalStateException("Unsupported http protocol client=\"" + client + "\"!");
} else {
HessianConnectionFactory factory = new DubboHessianURLConnectionFactory();
factory.setHessianProxyFactory(hessianProxyFactory);
hessianProxyFactory.setConnectionFactory(factory);
}
int timeout = url.getParameter(TIMEOUT_KEY, DEFAULT_TIMEOUT);
hessianProxyFactory.setConnectTimeout(timeout);
hessianProxyFactory.setReadTimeout(timeout);
hessianProxyFactory.setSerializerFactory(Hessian2FactoryInitializer.getInstance().getSerializerFactory());
return (T) hessianProxyFactory.create(serviceType, url.setProtocol("http").toJavaURL(), Thread.currentThread().getContextClassLoader());
}
@Override
protected int getErrorCode(Throwable e) {
if (e instanceof HessianConnectionException) {
if (e.getCause() != null) {
Class cls = e.getCause().getClass();
if (SocketTimeoutException.class.equals(cls)) {
return RpcException.TIMEOUT_EXCEPTION;
}
}
return RpcException.NETWORK_EXCEPTION;
} else if (e instanceof HessianMethodSerializationException) {
return RpcException.SERIALIZATION_EXCEPTION;
}
return super.getErrorCode(e);
}
@Override
public void destroy() {
super.destroy();
for (String key : new ArrayList(serverMap.keySet())) {
ProtocolServer protocolServer = serverMap.remove(key);
if (protocolServer != null) {
try {
if (logger.isInfoEnabled()) {
logger.info("Close hessian server " + protocolServer.getUrl());
}
protocolServer.close();
} catch (Throwable t) {
logger.warn(t.getMessage(), t);
}
}
}
}
private class HessianHandler implements HttpHandler {
@Override
public void handle(HttpServletRequest request, HttpServletResponse response)
throws IOException, ServletException {
String uri = request.getRequestURI();
HessianSkeleton skeleton = skeletonMap.get(uri);
if (!"POST".equalsIgnoreCase(request.getMethod())) {
response.setStatus(500);
} else {
RpcContext.getContext().setRemoteAddress(request.getRemoteAddr(), request.getRemotePort());
Enumeration enumeration = request.getHeaderNames();
while (enumeration.hasMoreElements()) {
String key = enumeration.nextElement();
if (key.startsWith(DEFAULT_EXCHANGER)) {
RpcContext.getContext().setAttachment(key.substring(DEFAULT_EXCHANGER.length()),
request.getHeader(key));
}
}
try {
skeleton.invoke(request.getInputStream(), response.getOutputStream(), Hessian2FactoryInitializer.getInstance().getSerializerFactory());
} catch (Throwable e) {
throw new ServletException(e);
}
}
}
}
}