content: /*
   * 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.activemq.transport.amqp.interop;
  
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertNotNull;
  import static org.junit.Assert.assertNull;
  
  import java.util.concurrent.TimeUnit;
  
  import org.apache.activemq.broker.jmx.DestinationViewMBean;
  import org.apache.activemq.broker.jmx.QueueViewMBean;
  import org.apache.activemq.broker.jmx.TopicViewMBean;
  import org.apache.activemq.transport.amqp.client.AmqpClient;
  import org.apache.activemq.transport.amqp.client.AmqpClientTestSupport;
  import org.apache.activemq.transport.amqp.client.AmqpConnection;
  import org.apache.activemq.transport.amqp.client.AmqpMessage;
  import org.apache.activemq.transport.amqp.client.AmqpReceiver;
  import org.apache.activemq.transport.amqp.client.AmqpSession;
  import org.junit.Test;
  
  /**
   * Tests various behaviors of broker side drain support.
   */
  public class AmqpReceiverDrainTest extends AmqpClientTestSupport {
  
      @Test(timeout = 60000)
      public void testReceiverCanDrainMessagesQueue() throws Exception {
          doTestReceiverCanDrainMessages(false);
      }
  
      @Test(timeout = 60000)
      public void testReceiverCanDrainMessagesTopic() throws Exception {
          doTestReceiverCanDrainMessages(true);
      }
  
      private void doTestReceiverCanDrainMessages(boolean topic) throws Exception {
          final String destinationName;
          if (topic) {
              destinationName = "topic://" + getTestName();
          } else {
              destinationName = "queue://" + getTestName();
          }
  
          int MSG_COUNT = 20;
  
          AmqpClient client = createAmqpClient();
          AmqpConnection connection = trackConnection(client.connect());
          AmqpSession session = connection.createSession();
  
          AmqpReceiver receiver = session.createReceiver(destinationName);
  
          sendMessages(getTestName(), MSG_COUNT, topic);
  
          final DestinationViewMBean destinationView;
          if (topic) {
              destinationView = getProxyToTopic(getTestName());
          } else {
              destinationView = getProxyToQueue(getTestName());
          }
  
          assertEquals(MSG_COUNT, destinationView.getEnqueueCount());
          assertEquals(0, destinationView.getDispatchCount());
  
          receiver.drain(MSG_COUNT);
          for (int i = 0; i < MSG_COUNT; ++i) {
              AmqpMessage message = receiver.receive(5, TimeUnit.SECONDS);
              assertNotNull("Failed to read message: " + (i + 1), message);
              LOG.info("Read message: {}", message.getMessageId());
              message.accept();
          }
          receiver.close();
  
          assertEquals(MSG_COUNT, destinationView.getDequeueCount());
  
          connection.close();
      }
  
      @Test(timeout = 60000)
      public void testPullWithNoMessageGetDrainedQueue() throws Exception {
          doTestPullWithNoMessageGetDrained(false);
      }
  
      @Test(timeout = 60000)
      public void testPullWithNoMessageGetDrainedTopic() throws Exception {
          doTestPullWithNoMessageGetDrained(true);
      }
  
      private void doTestPullWithNoMessageGetDrained(boolean topic) throws Exception {
  
          final String destinationName;
          if (topic) {
              destinationName = "topic://" + getTestName();
          } else {
              destinationName = "queue://" + getTestName();
          }
  
          AmqpClient client = createAmqpClient();
          AmqpConnection connection = trackConnection(client.connect());
          AmqpSession session = connection.createSession();
  
          AmqpReceiver receiver = session.createReceiver(destinationName);
  
          receiver.flow(10);
  
          final DestinationViewMBean destinationView;
          if (topic) {
              destinationView = getProxyToTopic(getTestName());
          } else {
              destinationView = getProxyToQueue(getTestName());
          }
  
          assertEquals(0, destinationView.getEnqueueCount());
          assertEquals(0, destinationView.getDispatchCount());
  
          assertEquals(10, receiver.getReceiver().getRemoteCredit());
  
          assertNull(receiver.pull(1, TimeUnit.SECONDS));
  
          assertEquals(0, receiver.getReceiver().getRemoteCredit());
  
          connection.close();
      }
  
      @Test(timeout = 60000)
      public void testPullOneFromRemoteQueue() throws Exception {
          doTestPullOneFromRemote(false);
      }
  
      @Test(timeout = 60000)
      public void testPullOneFromRemoteTopic() throws Exception {
          doTestPullOneFromRemote(true);
      }
  
      private void doTestPullOneFromRemote(boolean topic) throws Exception {
  
          AmqpClient client = createAmqpClient();
          AmqpConnection connection = trackConnection(client.connect());
          AmqpSession session = connection.createSession();
  
          final String destinationName;
          if (topic) {
              destinationName = "topic://" + getTestName();
          } else {
              destinationName = "queue://" + getTestName();
          }
  
          AmqpReceiver receiver = session.createReceiver(destinationName);
  
          int MSG_COUNT = 20;
          sendMessages(getTestName(), MSG_COUNT, topic);
  
          final DestinationViewMBean destinationView;
          if (topic) {
              destinationView = getProxyToTopic(getTestName());
          } else {
              destinationView = getProxyToQueue(getTestName());
          }
  
          assertEquals(MSG_COUNT, destinationView.getEnqueueCount());
          assertEquals(0, destinationView.getDispatchCount());
  
          assertEquals(0, receiver.getReceiver().getRemoteCredit());
  
          AmqpMessage message = receiver.pull(5, TimeUnit.SECONDS);
          assertNotNull(message);
          message.accept();
  
          assertEquals(0, receiver.getReceiver().getRemoteCredit());
  
          receiver.close();
  
          assertEquals(MSG_COUNT - 1, destinationView.getEnqueueCount() - destinationView.getDequeueCount());
          assertEquals(1, destinationView.getDispatchCount());
  
          connection.close();
      }
  
      @Test(timeout = 60000)
      public void testMultipleZeroResultPullsQueue() throws Exception {
          doTestMultipleZeroResultPulls(false);
      }
  
      @Test(timeout = 60000)
      public void testMultipleZeroResultPullsTopic() throws Exception {
          doTestMultipleZeroResultPulls(true);
      }
  
      private void doTestMultipleZeroResultPulls(boolean topic) throws Exception {
  
          AmqpClient client = createAmqpClient();
          AmqpConnection connection = trackConnection(client.connect());
          AmqpSession session = connection.createSession();
  
          final String destinationName;
          if (topic) {
              destinationName = "topic://" + getTestName();
          } else {
              destinationName = "queue://" + getTestName();
          }
  
          AmqpReceiver receiver = session.createReceiver(destinationName);
  
          receiver.flow(10);
  
          if (topic) {
              TopicViewMBean topicView = getProxyToTopic(getTestName());
              assertEquals(0, topicView.getEnqueueCount());
              assertEquals(0, topicView.getDispatchCount());
          } else {
              QueueViewMBean queueView = getProxyToQueue(getTestName());
              assertEquals(0, queueView.getQueueSize());
              assertEquals(0, queueView.getDispatchCount());
          }
  
          assertEquals(10, receiver.getReceiver().getRemoteCredit());
  
          assertNull(receiver.pull(1, TimeUnit.SECONDS));
  
          assertEquals(0, receiver.getReceiver().getRemoteCredit());
  
          assertNull(receiver.pull(1, TimeUnit.SECONDS));
          assertNull(receiver.pull(1, TimeUnit.SECONDS));
  
          assertEquals(0, receiver.getReceiver().getRemoteCredit());
  
          connection.close();
      }
  
      @Override
      protected boolean isUseOpenWireConnector() {
          return true;
      }
  }
  