| /* |
| * 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.http; |
| |
| 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 com.fasterxml.jackson.databind.DeserializationFeature; |
| import com.fasterxml.jackson.databind.ObjectMapper; |
| import com.googlecode.jsonrpc4j.HttpException; |
| import com.googlecode.jsonrpc4j.JsonRpcClientException; |
| import com.googlecode.jsonrpc4j.JsonRpcServer; |
| import com.googlecode.jsonrpc4j.spring.JsonProxyFactoryBean; |
| import org.springframework.remoting.RemoteAccessException; |
| import org.springframework.remoting.support.RemoteInvocation; |
| |
| 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.Map; |
| import java.util.concurrent.ConcurrentHashMap; |
| |
| import static org.apache.dubbo.rpc.Constants.GENERIC_KEY; |
| |
| public class HttpProtocol extends AbstractProxyProtocol { |
| public static final String ACCESS_CONTROL_ALLOW_ORIGIN_HEADER = "Access-Control-Allow-Origin"; |
| public static final String ACCESS_CONTROL_ALLOW_METHODS_HEADER = "Access-Control-Allow-Methods"; |
| public static final String ACCESS_CONTROL_ALLOW_HEADERS_HEADER = "Access-Control-Allow-Headers"; |
| |
| private final Map<String, JsonRpcServer> skeletonMap = new ConcurrentHashMap<>(); |
| |
| private HttpBinder httpBinder; |
| |
| public HttpProtocol() { |
| super(HttpException.class, JsonRpcClientException.class); |
| } |
| |
| public void setHttpBinder(HttpBinder httpBinder) { |
| this.httpBinder = httpBinder; |
| } |
| |
| @Override |
| public int getDefaultPort() { |
| return 80; |
| } |
| |
| private class InternalHandler implements HttpHandler { |
| |
| private boolean cors; |
| |
| public InternalHandler(boolean cors) { |
| this.cors = cors; |
| } |
| |
| @Override |
| public void handle(HttpServletRequest request, HttpServletResponse response) |
| throws ServletException { |
| String uri = request.getRequestURI(); |
| JsonRpcServer skeleton = skeletonMap.get(uri); |
| if (cors) { |
| response.setHeader(ACCESS_CONTROL_ALLOW_ORIGIN_HEADER, "*"); |
| response.setHeader(ACCESS_CONTROL_ALLOW_METHODS_HEADER, "POST"); |
| response.setHeader(ACCESS_CONTROL_ALLOW_HEADERS_HEADER, "*"); |
| } |
| if (request.getMethod().equalsIgnoreCase("OPTIONS")) { |
| response.setStatus(200); |
| } else if (request.getMethod().equalsIgnoreCase("POST")) { |
| |
| RpcContext.getContext().setRemoteAddress(request.getRemoteAddr(), request.getRemotePort()); |
| try { |
| skeleton.handle(request.getInputStream(), response.getOutputStream()); |
| } catch (Throwable e) { |
| throw new ServletException(e); |
| } |
| } else { |
| response.setStatus(500); |
| } |
| } |
| |
| } |
| |
| @Override |
| protected <T> Runnable doExport(final T impl, Class<T> type, URL url) throws RpcException { |
| String addr = getAddr(url); |
| ProtocolServer protocolServer = serverMap.get(addr); |
| if (protocolServer == null) { |
| RemotingServer remotingServer = httpBinder.bind(url, new InternalHandler(url.getParameter("cors", false))); |
| serverMap.put(addr, new ProxyProtocolServer(remotingServer)); |
| } |
| final String path = url.getAbsolutePath(); |
| final String genericPath = path + "/" + GENERIC_KEY; |
| ObjectMapper mapper = new ObjectMapper(); |
| mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false); |
| JsonRpcServer skeleton = new JsonRpcServer(mapper, impl, type); |
| JsonRpcServer genericServer = new JsonRpcServer(mapper, impl, GenericService.class); |
| skeletonMap.put(path, skeleton); |
| skeletonMap.put(genericPath, genericServer); |
| return () -> { |
| skeletonMap.remove(path); |
| skeletonMap.remove(genericPath); |
| }; |
| } |
| |
| @SuppressWarnings("unchecked") |
| @Override |
| protected <T> T doRefer(final Class<T> serviceType, URL url) throws RpcException { |
| final String generic = url.getParameter(GENERIC_KEY); |
| final boolean isGeneric = ProtocolUtils.isGeneric(generic) || serviceType.equals(GenericService.class); |
| JsonProxyFactoryBean jsonProxyFactoryBean = new JsonProxyFactoryBean(); |
| JsonRpcProxyFactoryBean jsonRpcProxyFactoryBean = new JsonRpcProxyFactoryBean(jsonProxyFactoryBean); |
| jsonRpcProxyFactoryBean.setRemoteInvocationFactory((methodInvocation) -> { |
| RemoteInvocation invocation = new JsonRemoteInvocation(methodInvocation); |
| if (isGeneric) { |
| invocation.addAttribute(GENERIC_KEY, generic); |
| } |
| return invocation; |
| }); |
| String key = new URL("http", url.getHost(), url.getPort(), url.getPath(), url.getParameters()).toIdentityString(); |
| if (isGeneric) { |
| key = key + "/" + GENERIC_KEY; |
| } |
| |
| jsonRpcProxyFactoryBean.setServiceUrl(key); |
| jsonRpcProxyFactoryBean.setServiceInterface(serviceType); |
| |
| jsonProxyFactoryBean.afterPropertiesSet(); |
| return (T) jsonProxyFactoryBean.getObject(); |
| } |
| |
| protected int getErrorCode(Throwable e) { |
| if (e instanceof RemoteAccessException) { |
| e = e.getCause(); |
| } |
| if (e != null) { |
| Class<?> cls = e.getClass(); |
| if (SocketTimeoutException.class.equals(cls)) { |
| return RpcException.TIMEOUT_EXCEPTION; |
| } else if (IOException.class.isAssignableFrom(cls)) { |
| return RpcException.NETWORK_EXCEPTION; |
| } else if (ClassNotFoundException.class.isAssignableFrom(cls)) { |
| return RpcException.SERIALIZATION_EXCEPTION; |
| } |
| |
| if (e instanceof HttpProtocolErrorCode) { |
| return ((HttpProtocolErrorCode) e).getErrorCode(); |
| } |
| } |
| return super.getErrorCode(e); |
| } |
| |
| @Override |
| public void destroy() { |
| super.destroy(); |
| for (String key : new ArrayList<>(serverMap.keySet())) { |
| ProtocolServer server = serverMap.remove(key); |
| if (server != null) { |
| try { |
| if (logger.isInfoEnabled()) { |
| logger.info("Close jsonrpc server " + server.getUrl()); |
| } |
| server.close(); |
| } catch (Throwable t) { |
| logger.warn(t.getMessage(), t); |
| } |
| } |
| } |
| } |
| |
| |
| } |