1 files changed, 59 insertions, 0 deletions
diff --git a/sca-java-2.x/tags/2.0.1-RC1/modules/binding-websocket/src/main/java/org/apache/tuscany/sca/binding/websocket/runtime/WebsocketCallbackInvoker.java b/sca-java-2.x/tags/2.0.1-RC1/modules/binding-websocket/src/main/java/org/apache/tuscany/sca/binding/websocket/runtime/WebsocketCallbackInvoker.java
new file mode 100644
index 0000000000..ebd7f13081
--- /dev/null
+++ b/sca-java-2.x/tags/2.0.1-RC1/modules/binding-websocket/src/main/java/org/apache/tuscany/sca/binding/websocket/runtime/WebsocketCallbackInvoker.java
@@ -0,0 +1,59 @@
+/*
+ * 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.websocket.runtime;
+
+import org.apache.tuscany.sca.assembly.EndpointReference;
+import org.apache.tuscany.sca.core.invocation.Constants;
+import org.apache.tuscany.sca.core.invocation.impl.MessageImpl;
+import org.apache.tuscany.sca.interfacedef.Operation;
+import org.apache.tuscany.sca.invocation.Invoker;
+import org.apache.tuscany.sca.invocation.Message;
+
+/**
+ * The callback invoker is used to send asynchronous responses back to the
+ * browser client.
+ */
+public class WebsocketCallbackInvoker implements Invoker {
+
+    protected Operation operation;
+    protected EndpointReference endpoint;
+
+    public WebsocketCallbackInvoker(Operation operation, EndpointReference endpoint) {
+        this.operation = operation;
+        this.endpoint = endpoint;
+    }
+
+    public Message invoke(Message msg) {
+        String channelId = (String) msg.getHeaders().get(Constants.RELATES_TO);
+        TuscanyWebsocket websocket = WebsocketConnectionManager.getConnection(channelId);
+        Message response = new MessageImpl();
+        if (websocket == null) {
+            response.setBody(WebsocketStatus.CLOSED);
+        } else {
+            Object[] body = msg.getBody();
+            String payload = JSONUtil.encodePayload(body[0]);
+            String operation = msg.getTo().getURI();
+            WebsocketBindingMessage message = new WebsocketBindingMessage(operation, payload);
+            websocket.send(message);
+            response.setBody(WebsocketStatus.OPEN);
+        }
+        return response;
+    }
+}