1 files changed, 147 insertions, 0 deletions
diff --git a/tags/java/sca/2.0-M4-RC1/modules/binding-jsonrpc-runtime/src/main/java/org/apache/tuscany/sca/binding/jsonrpc/provider/JSONRPCBindingInvoker.java b/tags/java/sca/2.0-M4-RC1/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/tags/java/sca/2.0-M4-RC1/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;
+    }    
+}