/**
 * 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.broker.region;

import static org.junit.Assert.*;

import java.io.IOException;

import org.apache.activemq.broker.BrokerService;
import org.apache.activemq.broker.Connection;
import org.apache.activemq.broker.ConnectionContext;
import org.apache.activemq.broker.Connector;
import org.apache.activemq.broker.ProducerBrokerExchange;
import org.apache.activemq.command.ActiveMQQueue;
import org.apache.activemq.command.ActiveMQTextMessage;
import org.apache.activemq.command.Command;
import org.apache.activemq.command.ConnectionControl;
import org.apache.activemq.command.Message;
import org.apache.activemq.command.MessageId;
import org.apache.activemq.command.ProducerInfo;
import org.apache.activemq.command.Response;
import org.apache.activemq.state.ProducerState;
import org.apache.activemq.store.MessageStore;
import org.apache.activemq.store.PersistenceAdapter;
import org.apache.activemq.usage.MemoryUsage;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class QueueOptimizedDispatchExceptionTest {

   private static final Logger LOG = LoggerFactory.getLogger(QueueOptimizedDispatchExceptionTest.class);

   private static final String brokerName = "testBroker";
   private static final String brokerUrl = "vm://" + brokerName;
   private static final int count = 50;

   private final static String mesageIdRoot = "11111:22222:";
   private final ActiveMQQueue destination = new ActiveMQQueue("queue-" + QueueOptimizedDispatchExceptionTest.class.getSimpleName());
   private final int messageBytesSize = 256;
   private final String text = new String(new byte[messageBytesSize]);

   private BrokerService broker;

   @Before
   public void setUp() throws Exception {

      // Setup and start the broker
      broker = new BrokerService();
      broker.setBrokerName(brokerName);
      broker.setPersistent(false);
      broker.setSchedulerSupport(false);
      broker.setUseJmx(false);
      broker.setUseShutdownHook(false);
      broker.addConnector(brokerUrl);

      // Start the broker
      broker.start();
      broker.waitUntilStarted();
   }

   @After
   public void tearDown() throws Exception {
      broker.stop();
      broker.waitUntilStopped();
   }

   private class MockMemoryUsage extends MemoryUsage {

      private boolean full = true;

      public void setFull(boolean full) {
         this.full = full;
      }

      @Override
      public boolean isFull() {
         return full;
      }
   }

   @Test
   public void TestOptimizedDispatchCME() throws Exception {
      final PersistenceAdapter persistenceAdapter = broker.getPersistenceAdapter();
      final MessageStore queueMessageStore = persistenceAdapter.createQueueMessageStore(destination);
      final ConnectionContext contextNotInTx = new ConnectionContext();
      contextNotInTx.setConnection(new Connection() {

         @Override
         public void stop() throws Exception {
         }

         @Override
         public void start() throws Exception {
         }

         @Override
         public void updateClient(ConnectionControl control) {
         }

         @Override
         public void serviceExceptionAsync(IOException e) {
         }

         @Override
         public void serviceException(Throwable error) {
         }

         @Override
         public Response service(Command command) {
            return null;
         }

         @Override
         public boolean isSlow() {
            return false;
         }

         @Override
         public boolean isNetworkConnection() {
            return false;
         }

         @Override
         public boolean isManageable() {
            return false;
         }

         @Override
         public boolean isFaultTolerantConnection() {
            return false;
         }

         @Override
         public boolean isConnected() {
            return true;
         }

         @Override
         public boolean isBlocked() {
            return false;
         }

         @Override
         public boolean isActive() {
            return false;
         }

         @Override
         public ConnectionStatistics getStatistics() {
            return null;
         }

         @Override
         public String getRemoteAddress() {
            return null;
         }

         @Override
         public int getDispatchQueueSize() {
            return 0;
         }

         @Override
         public Connector getConnector() {
            // TODO Auto-generated method stub
            return null;
         }

         @Override
         public String getConnectionId() {
            return null;
         }

         @Override
         public void dispatchSync(Command message) {
         }

         @Override
         public void dispatchAsync(Command command) {
         }

         @Override
         public int getActiveTransactionCount() {
            return 0;
         }

         @Override
         public Long getOldestActiveTransactionDuration() {
            return null;
         }
      });

      final DestinationStatistics destinationStatistics = new DestinationStatistics();
      final Queue queue = new Queue(broker, destination, queueMessageStore, destinationStatistics, broker.getTaskRunnerFactory());

      final MockMemoryUsage usage = new MockMemoryUsage();

      queue.setOptimizedDispatch(true);
      queue.initialize();
      queue.start();
      queue.memoryUsage = usage;

      ProducerBrokerExchange producerExchange = new ProducerBrokerExchange();
      ProducerInfo producerInfo = new ProducerInfo();
      ProducerState producerState = new ProducerState(producerInfo);
      producerExchange.setProducerState(producerState);
      producerExchange.setConnectionContext(contextNotInTx);

      // populate the queue store, exceed memory limit so that cache is disabled
      for (int i = 0; i < count; i++) {
         Message message = getMessage(i);
         queue.send(producerExchange, message);
      }

      usage.setFull(false);

      try {
         queue.wakeup();
      }
      catch (Exception e) {
         LOG.error("Queue threw an unexpected exception: " + e.toString());
         fail("Should not throw an exception.");
      }
   }

   private Message getMessage(int i) throws Exception {
      ActiveMQTextMessage message = new ActiveMQTextMessage();
      message.setMessageId(new MessageId(mesageIdRoot + i));
      message.setDestination(destination);
      message.setPersistent(false);
      message.setResponseRequired(true);
      message.setText("Msg:" + i + " " + text);
      assertEquals(message.getMessageId().getProducerSequenceId(), i);
      return message;
   }
}
