Qpid-1587: Added LVQ samples

git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk/qpid@734994 13f79535-47bb-0310-9956-ffa450edef68

3 files changed, 246 insertions, 0 deletions

diff --git a/java/client/example/src/main/java/org/apache/qpid/example/amqpexample/lvq/DeclareLVQueue.java b/java/client/example/src/main/java/org/apache/qpid/example/amqpexample/lvq/DeclareLVQueue.java
new file mode 100644
index 0000000000..86a0f362ad
--- /dev/null
+++ b/java/client/example/src/main/java/org/apache/qpid/example/amqpexample/lvq/DeclareLVQueue.java
@@ -0,0 +1,64 @@
+package org.apache.qpid.example.amqpexample.lvq;
+/*
+ *
+ * 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.
+ *
+ */
+
+
+import org.apache.qpid.transport.Connection;
+import org.apache.qpid.transport.Session;
+
+import java.util.Map;
+import java.util.HashMap;
+
+/**
+ *  This creates a queue a LVQueue with key test and binds it to the
+ *  amq.direct exchange
+ *
+ */
+public class DeclareLVQueue
+{
+
+    public static void main(String[] args)
+    {
+        // Create connection
+        Connection con = new Connection();
+        con.connect("localhost", 5672, "test", "guest", "guest",false);
+
+        // Create session
+        Session session = con.createSession(0);
+
+        // declare and bind queue
+        Map<String, Object> arguments = new HashMap<String, Object>();
+        // We use a lvq
+        arguments.put("qpid.last_value_queue", true);
+        // We want this queue to use the key test
+        arguments.put("qpid.LVQ_key", "test");
+        session.queueDeclare("message_queue", null, arguments);
+        session.exchangeBind("message_queue", "amq.direct", "routing_key", null);
+
+        // confirm completion
+        session.sync();
+
+        //cleanup
+        session.close();
+        con.close();
+    }
+}
+
diff --git a/java/client/example/src/main/java/org/apache/qpid/example/amqpexample/lvq/Listener.java b/java/client/example/src/main/java/org/apache/qpid/example/amqpexample/lvq/Listener.java
new file mode 100644
index 0000000000..b930062813
--- /dev/null
+++ b/java/client/example/src/main/java/org/apache/qpid/example/amqpexample/lvq/Listener.java
@@ -0,0 +1,113 @@
+package org.apache.qpid.example.amqpexample.lvq;
+/*
+ *
+ * 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.
+ *
+ */
+
+
+import org.apache.qpid.transport.Connection;
+import org.apache.qpid.transport.MessageAcceptMode;
+import org.apache.qpid.transport.MessageAcquireMode;
+import org.apache.qpid.transport.MessageCreditUnit;
+import org.apache.qpid.transport.MessageTransfer;
+import org.apache.qpid.transport.Session;
+import org.apache.qpid.transport.SessionException;
+import org.apache.qpid.transport.SessionListener;
+
+import java.util.concurrent.CountDownLatch;
+import java.util.concurrent.TimeUnit;
+
+/**
+ * This listens to messages on a queue and terminates
+ * when it sees the final message
+ *
+ */
+public class Listener implements SessionListener
+{
+    private static CountDownLatch _countDownLatch = new CountDownLatch(1);
+
+    public void opened(Session ssn) {}
+
+    public void message(Session ssn, MessageTransfer xfr)
+    {
+        String body = xfr.getBodyString();
+        System.out.println("Message: " + body);
+        if ( body.equals("That's all, folks!"))
+        {
+            System.out.println("Received final message");
+            _countDownLatch.countDown();
+        }
+    }
+
+    public void exception(Session ssn, SessionException exc)
+    {
+        exc.printStackTrace();
+    }
+
+    public void closed(Session ssn) {}
+
+    /**
+     *  This sends 10 messages to the
+     *  amq.direct exchange using the
+     *  routing key as "routing_key"
+     *
+     * @param args
+     */
+    public static void main(String[] args) throws InterruptedException
+    {
+        // Create connection
+        Connection con = new Connection();
+        con.connect("localhost", 5672, "test", "guest", "guest",false);
+
+        // Create session
+        Session session = con.createSession(0);
+
+        // Create an instance of the listener
+        Listener listener = new Listener();
+        session.setSessionListener(listener);
+
+        // create a subscription
+        session.messageSubscribe("message_queue",
+                                 "listener_destination",
+                                 MessageAcceptMode.NONE,
+                                 MessageAcquireMode.PRE_ACQUIRED,
+                                 null, 0, null);
+
+
+        // issue credits
+        // XXX
+        session.messageFlow("listener_destination", MessageCreditUnit.BYTE, Session.UNLIMITED_CREDIT);
+        session.messageFlow("listener_destination", MessageCreditUnit.MESSAGE, 11);
+
+        // confirm completion
+        session.sync();
+
+        // wait to receive all the messages
+        System.out.println("Waiting 100 seconds for messages from listener_destination");
+
+        _countDownLatch.await(30, TimeUnit.SECONDS);
+        System.out.println("Shutting down listener for listener_destination");
+        session.messageCancel("listener_destination");
+
+        //cleanup
+        session.close();
+        con.close();
+    }
+
+}
diff --git a/java/client/example/src/main/java/org/apache/qpid/example/amqpexample/lvq/Producer.java b/java/client/example/src/main/java/org/apache/qpid/example/amqpexample/lvq/Producer.java
new file mode 100644
index 0000000000..482e6a6b11
--- /dev/null
+++ b/java/client/example/src/main/java/org/apache/qpid/example/amqpexample/lvq/Producer.java
@@ -0,0 +1,69 @@
+package org.apache.qpid.example.amqpexample.lvq;
+/*
+ *
+ * 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.
+ *
+ */
+
+import java.util.Map;
+import java.util.HashMap;
+import org.apache.qpid.transport.*;
+
+public class Producer
+{
+
+    public static void main(String[] args)
+    {
+        // Create connection
+        Connection con = new Connection();
+        con.connect("localhost", 5672, "test", "guest", "guest",false);
+
+        // Create session
+        Session session = con.createSession(0);
+        DeliveryProperties deliveryProps = new DeliveryProperties();
+        deliveryProps.setRoutingKey("routing_key");
+
+        // set message headers
+        MessageProperties messageProperties = new MessageProperties();
+        Map<String, Object> messageHeaders = new HashMap<String, Object>();
+        // set the message key
+        messageHeaders.put("qpid.LVQ_key", "test");
+        messageProperties.setApplicationHeaders(messageHeaders);
+
+        Header header = new Header(deliveryProps, messageProperties);
+
+        for (int i=0; i<10; i++)
+        {
+            session.messageTransfer("amq.direct", MessageAcceptMode.EXPLICIT,MessageAcquireMode.PRE_ACQUIRED,
+                                    header,
+                                    "Message " + i);
+        }
+
+        session.messageTransfer("amq.direct", MessageAcceptMode.EXPLICIT,MessageAcquireMode.PRE_ACQUIRED,
+                                     header,
+                                     "That's all, folks!");
+
+        // confirm completion
+        session.sync();
+
+        //cleanup
+        session.close();
+        con.close();
+    }
+
+}