From 6d685c8e138af8d18bc71181ec630ccb9a17bdd9 Mon Sep 17 00:00:00 2001 From: nash Date: Wed, 6 Apr 2011 22:03:35 +0000 Subject: Tag for 1.6.2-RC1 git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@1089647 13f79535-47bb-0310-9956-ffa450edef68 --- .../provider/JSONRPCWireFormatInterceptor.java | 172 +++++++++++++++++++++ 1 file changed, 172 insertions(+) create mode 100644 sca-java-1.x/tags/1.6.2-RC1/modules/binding-http-jsonrpc-runtime/src/main/java/org/apache/tuscany/sca/binding/http/wireformat/jsonrpc/provider/JSONRPCWireFormatInterceptor.java (limited to 'sca-java-1.x/tags/1.6.2-RC1/modules/binding-http-jsonrpc-runtime/src/main/java/org/apache/tuscany/sca/binding/http/wireformat/jsonrpc/provider/JSONRPCWireFormatInterceptor.java') diff --git a/sca-java-1.x/tags/1.6.2-RC1/modules/binding-http-jsonrpc-runtime/src/main/java/org/apache/tuscany/sca/binding/http/wireformat/jsonrpc/provider/JSONRPCWireFormatInterceptor.java b/sca-java-1.x/tags/1.6.2-RC1/modules/binding-http-jsonrpc-runtime/src/main/java/org/apache/tuscany/sca/binding/http/wireformat/jsonrpc/provider/JSONRPCWireFormatInterceptor.java new file mode 100644 index 0000000000..b314f69fcb --- /dev/null +++ b/sca-java-1.x/tags/1.6.2-RC1/modules/binding-http-jsonrpc-runtime/src/main/java/org/apache/tuscany/sca/binding/http/wireformat/jsonrpc/provider/JSONRPCWireFormatInterceptor.java @@ -0,0 +1,172 @@ +/* + * 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.tuscany.sca.binding.http.wireformat.jsonrpc.provider; + +import org.apache.tuscany.sca.binding.http.HTTPBinding; +import org.apache.tuscany.sca.binding.http.HTTPBindingContext; +import org.apache.tuscany.sca.interfacedef.InterfaceContract; +import org.apache.tuscany.sca.interfacedef.java.JavaInterface; +import org.apache.tuscany.sca.invocation.Interceptor; +import org.apache.tuscany.sca.invocation.Invoker; +import org.apache.tuscany.sca.invocation.Message; +import org.apache.tuscany.sca.invocation.MessageFactory; +import org.apache.tuscany.sca.runtime.RuntimeWire; +import org.json.JSONArray; +import org.json.JSONObject; +import org.osoa.sca.ServiceRuntimeException; + +import com.metaparadigm.jsonrpc.JSONRPCResult; + +/** + * JSON-RPC Wire Format Interceptor + * + * @version $Rev$ $Date$ + */ +public class JSONRPCWireFormatInterceptor implements Interceptor { + private Invoker next; + + private RuntimeWire runtimeWire; + private HTTPBinding binding; + + private InterfaceContract serviceContract; + + private MessageFactory messageFactory; + + public JSONRPCWireFormatInterceptor(HTTPBinding binding, RuntimeWire runtimeWire, InterfaceContract serviceContract, MessageFactory messageFactory) { + this.binding = binding; + this.runtimeWire = runtimeWire; + + this.serviceContract = serviceContract; + + this.messageFactory = messageFactory; + } + + public Invoker getNext() { + return next; + } + + public void setNext(Invoker next) { + this.next = next; + + } + + public Message invoke(Message msg) { + HTTPBindingContext bindingContext = msg.getBindingContext(); + Message returnMessage = null; + + if ("smd".equals(bindingContext.getHttpRequest().getQueryString())) { + returnMessage = handleSMDInvocation(msg); + } else { + returnMessage = handleJSONRPCInvocation(msg); + } + + return returnMessage; + + } + + /** + * Handle regular JSON-RPC Invocation + * @param msg + * @return + */ + private Message handleJSONRPCInvocation (Message msg) { + JSONObject jsonReq = (JSONObject) msg.getBody(); + String method = null; + Object[] args = null; + Object id = null; + try { + // Extract the method + method = jsonReq.getString("method"); + if ((method != null) && (method.indexOf('.') < 0)) { + jsonReq.putOpt("method", "Service" + "." + method); + } + + // Extract the arguments + JSONArray array = jsonReq.getJSONArray("params"); + args = new Object[array.length()]; + for (int i = 0; i < args.length; i++) { + args[i] = array.get(i); + } + id = jsonReq.get("id"); + + } catch (Exception e) { + throw new RuntimeException("Unable to find json method name", e); + } + + Message responseMessage = null; + try { + msg.setBody(args); + responseMessage = runtimeWire.getInvocationChain(msg.getOperation()).getHeadInvoker().invoke(msg); + } catch (RuntimeException re) { + Throwable exception = new RuntimeException("Error invoking service :" + re.getMessage(), re); + return createJSONFaultMessage(re); + } + + Object result = null; + if (!responseMessage.isFault()) { + //successful execution of the invocation + try { + result = responseMessage.getBody(); + JSONObject jsonResponse = new JSONObject(); + jsonResponse.put("result", result); + jsonResponse.putOpt("id", id); + //get response to send to client + responseMessage.setBody(jsonResponse); + return responseMessage; + } catch (Exception e) { + throw new ServiceRuntimeException("Unable to create JSON response", e); + } + } else { + //exception thrown while executing the invocation + Throwable exception = (Throwable)responseMessage.getBody(); + return createJSONFaultMessage(exception); + } + } + + /** + * handles requests for the SMD descriptor for a service + */ + private Message handleSMDInvocation(Message msg) { + HTTPBindingContext bindingContext = msg.getBindingContext(); + + String serviceUrl = bindingContext.getHttpRequest().getRequestURL().toString(); + JavaInterface interfaze = (JavaInterface) serviceContract.getInterface(); + String smd = JavaToSmd.interfaceToSmd(interfaze.getJavaClass(), serviceUrl); + + Message smdResponseMessage = messageFactory.createMessage(); + smdResponseMessage.setBody(smd); + + return smdResponseMessage; + } + + /** + * Create a Fault Message with a JSON representation of the current exception + * @param throwable + * @return + */ + private Message createJSONFaultMessage(Throwable throwable) { + Message jsonFaultMessage = messageFactory.createMessage(); + + JSONRPCResult jsonFault = new JSONRPCResult(JSONRPCResult.CODE_REMOTE_EXCEPTION, null, throwable); + jsonFaultMessage.setBody(jsonFault); + + return jsonFaultMessage; + } +} -- cgit v1.2.3