diff options
Diffstat (limited to 'branches/sca-java-2.0-M4/modules/binding-jsonrpc-runtime/src/main/java/org/apache/tuscany/sca/binding/jsonrpc/provider/JSONRPCBindingInvoker.java')
-rw-r--r-- | branches/sca-java-2.0-M4/modules/binding-jsonrpc-runtime/src/main/java/org/apache/tuscany/sca/binding/jsonrpc/provider/JSONRPCBindingInvoker.java | 147 |
1 files changed, 147 insertions, 0 deletions
diff --git a/branches/sca-java-2.0-M4/modules/binding-jsonrpc-runtime/src/main/java/org/apache/tuscany/sca/binding/jsonrpc/provider/JSONRPCBindingInvoker.java b/branches/sca-java-2.0-M4/modules/binding-jsonrpc-runtime/src/main/java/org/apache/tuscany/sca/binding/jsonrpc/provider/JSONRPCBindingInvoker.java new file mode 100644 index 0000000000..f3abf82520 --- /dev/null +++ b/branches/sca-java-2.0-M4/modules/binding-jsonrpc-runtime/src/main/java/org/apache/tuscany/sca/binding/jsonrpc/provider/JSONRPCBindingInvoker.java @@ -0,0 +1,147 @@ +/* + * 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.interfacedef.Operation; +import org.apache.tuscany.sca.invocation.DataExchangeSemantics; +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, DataExchangeSemantics { + 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 { + + JSONObject jsonRequest = null;; + String requestId = "1"; + 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); + } + + post = new HttpPost(uri); + String req = jsonRequest.toString(); + StringEntity entity = new StringEntity(req, "application/json; charset\"UTF-8\""); + post.setEntity(entity); + + response = httpClient.execute(post); + + if (response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) { + //success + JSONObject jsonResponse = null; + try { + + jsonResponse = new JSONObject(EntityUtils.toString(response.getEntity())); + + //check requestId + if (! jsonResponse.getString("id").equalsIgnoreCase(requestId)) { + throw new RuntimeException("Invalid response id:" + requestId ); + } + + msg.setBody(jsonResponse.get("result")); + } 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; + } + + public boolean allowsPassByReference() { + return true; + } +} |