1 files changed, 69 insertions, 0 deletions
diff --git a/sca-java-2.x/tags/2.0.1-RC1/modules/binding-comet-runtime/src/main/java/org/apache/tuscany/sca/binding/comet/runtime/CometCallbackInvoker.java b/sca-java-2.x/tags/2.0.1-RC1/modules/binding-comet-runtime/src/main/java/org/apache/tuscany/sca/binding/comet/runtime/CometCallbackInvoker.java
new file mode 100644
index 0000000000..b973c90728
--- /dev/null
+++ b/sca-java-2.x/tags/2.0.1-RC1/modules/binding-comet-runtime/src/main/java/org/apache/tuscany/sca/binding/comet/runtime/CometCallbackInvoker.java
@@ -0,0 +1,69 @@
+/*
+ * 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.comet.runtime;
+
+import org.apache.tuscany.sca.assembly.EndpointReference;
+import org.apache.tuscany.sca.binding.comet.runtime.callback.Status;
+import org.apache.tuscany.sca.binding.comet.runtime.manager.CometSessionManager;
+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;
+import org.atmosphere.cpr.Broadcaster;
+
+/**
+ * Receives callback invocations and sends messages back to the browser.
+ */
+public class CometCallbackInvoker implements Invoker {
+
+    protected Operation operation;
+    protected EndpointReference endpoint;
+
+    public CometCallbackInvoker(final Operation operation, final EndpointReference endpoint) {
+        this.operation = operation;
+        this.endpoint = endpoint;
+    }
+
+    /**
+     * Sends message back to the browser client and reports connection status to
+     * the runtime.
+     * 
+     * @param msg
+     *            message to send to the browser
+     * @return the connection status
+     */
+    @Override
+    public Message invoke(final Message msg) {
+        String sessionId = (String) msg.getHeaders().get(Constants.RELATES_TO);
+        Broadcaster broadcaster = CometSessionManager.get(sessionId);
+        Message response = new MessageImpl();
+        if (broadcaster == null) {
+            response.setBody(Status.CLIENT_DISCONNECTED);
+        } else {
+            String callbackMethod = msg.getTo().getURI();
+            Object[] body = msg.getBody();
+            broadcaster.broadcast(callbackMethod + "($.secureEvalJSON('" + JSONUtil.encodeResponse(body[0]) + "'))");
+            response.setBody(Status.OK);
+        }
+        return response;
+    }
+
+}