| /* |
| * 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.jsonrpc.provider; |
| |
| import org.apache.http.HttpResponse; |
| import org.apache.http.HttpStatus; |
| import org.apache.http.client.HttpClient; |
| import org.apache.http.client.methods.HttpPost; |
| import org.apache.http.entity.StringEntity; |
| import org.apache.http.util.EntityUtils; |
| import org.apache.tuscany.sca.assembly.EndpointReference; |
| import org.apache.tuscany.sca.binding.jsonrpc.JSONRPCBinding; |
| import org.apache.tuscany.sca.databinding.json.JSONDataBinding; |
| import org.apache.tuscany.sca.interfacedef.Operation; |
| import org.apache.tuscany.sca.invocation.Invoker; |
| import org.apache.tuscany.sca.invocation.Message; |
| import org.json.JSONArray; |
| import org.json.JSONObject; |
| |
| /** |
| * Invoker for the JSONRPC Binding |
| * |
| * @version $Rev$ $Date$ |
| */ |
| public class JSONRPCBindingInvoker implements Invoker { |
| private EndpointReference endpointReference; |
| private Operation operation; |
| private String uri; |
| |
| private HttpClient httpClient; |
| |
| public JSONRPCBindingInvoker(EndpointReference endpointReference, Operation operation, HttpClient httpClient) { |
| this.endpointReference = endpointReference; |
| this.operation = operation; |
| this.uri = ((JSONRPCBinding) endpointReference.getBinding()).getURI(); |
| |
| this.httpClient = httpClient; |
| } |
| |
| public Message invoke(Message msg) { |
| HttpPost post = null; |
| HttpResponse response = null; |
| try { |
| String requestId = "1"; |
| post = new HttpPost(uri); |
| |
| final String db = msg.getOperation().getWrapper().getDataBinding(); |
| String req; |
| if (!db.equals(JSONDataBinding.NAME)) { |
| |
| |
| JSONObject jsonRequest = null;; |
| Object[] args = null; |
| try { |
| // Extract the method |
| jsonRequest = new JSONObject(); |
| jsonRequest.putOpt("method", "Service" + "." + msg.getOperation().getName()); |
| |
| // Extract the arguments |
| args = msg.getBody(); |
| JSONArray array = new JSONArray(); |
| for (int i = 0; i < args.length; i++) { |
| array.put(args[i]); |
| } |
| jsonRequest.putOpt("params", array); |
| jsonRequest.put("id", requestId); |
| |
| } catch (Exception e) { |
| throw new RuntimeException("Unable to parse JSON parameter", e); |
| } |
| req = jsonRequest.toString(); |
| } else { |
| req = (String)((Object[])msg.getBody())[0]; |
| } |
| StringEntity entity = new StringEntity(req, "UTF-8"); |
| post.setEntity(entity); |
| |
| response = httpClient.execute(post); |
| |
| if (response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) { |
| //success |
| try { |
| String entityResponse = EntityUtils.toString(response.getEntity()); |
| if (!db.equals(JSONDataBinding.NAME)) { |
| JSONObject jsonResponse = new JSONObject(entityResponse); |
| |
| //check requestId |
| if (! jsonResponse.getString("id").equalsIgnoreCase(requestId)) { |
| throw new RuntimeException("Invalid response id:" + requestId ); |
| } |
| |
| msg.setBody(jsonResponse.get("result")); |
| } else { |
| msg.setBody(entityResponse); |
| } |
| |
| } catch (Exception e) { |
| //FIXME Exceptions are not handled correctly here |
| // They should be reported to the client JavaScript as proper |
| // JavaScript exceptions. |
| throw new RuntimeException("Unable to parse response", e); |
| } |
| } |
| } catch (Exception e) { |
| e.printStackTrace(); |
| msg.setFaultBody(e); |
| } |
| |
| return msg; |
| } |
| |
| private static JSONObject getJSONRequest(Message msg) { |
| |
| JSONObject jsonRequest = null;; |
| Object[] args = null; |
| Object id = null; |
| try { |
| // Extract the method |
| jsonRequest = new JSONObject(); |
| jsonRequest.putOpt("method", "Service" + "." + msg.getOperation().getName()); |
| |
| // Extract the arguments |
| args = msg.getBody(); |
| JSONArray array = new JSONArray(); |
| for (int i = 0; i < args.length; i++) { |
| array.put(args[i]); |
| } |
| jsonRequest.putOpt("params", array); |
| id = jsonRequest.put("id", "1"); |
| |
| } catch (Exception e) { |
| throw new RuntimeException("Unable to parse JSON parameter", e); |
| } |
| |
| return jsonRequest; |
| } |
| |
| } |