/**
 * 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.usecases;

import javax.jms.Destination;
import javax.jms.MessageConsumer;
import java.net.URI;

import org.apache.activemq.JmsMultipleBrokersTestSupport;
import org.apache.activemq.util.MessageIdList;
import org.apache.activemq.util.Wait;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class TwoBrokerNetworkLoadBalanceTest extends JmsMultipleBrokersTestSupport {

   protected static final Logger LOG = LoggerFactory.getLogger(TwoBrokerNetworkLoadBalanceTest.class);

   public void testLoadBalancing() throws Exception {
      bridgeBrokers("BrokerA", "BrokerB");
      bridgeBrokers("BrokerB", "BrokerA");

      startAllBrokers();
      waitForBridgeFormation();

      // Setup destination
      Destination dest = createDestination("TEST.FOO", false);

      // Setup consumers
      MessageConsumer clientA = createConsumer("BrokerA", dest);

      // Setup consumers
      MessageConsumer clientB = createConsumer("BrokerB", dest);

      // Send messages
      sendMessages("BrokerA", dest, 5000);

      // Send messages
      sendMessages("BrokerB", dest, 1000);

      // Get message count
      final MessageIdList msgsA = getConsumerMessages("BrokerA", clientA);
      final MessageIdList msgsB = getConsumerMessages("BrokerB", clientB);

      Wait.waitFor(new Wait.Condition() {
         @Override
         public boolean isSatisified() throws Exception {
            return msgsA.getMessageCount() + msgsB.getMessageCount() == 6000;
         }
      });

      LOG.info("A got: " + msgsA.getMessageCount());
      LOG.info("B got: " + msgsB.getMessageCount());

      assertTrue("B got is fair share: " + msgsB.getMessageCount(), msgsB.getMessageCount() > 2000);
   }

   @Override
   public void setUp() throws Exception {
      super.setAutoFail(true);
      super.setUp();
      createBroker(new URI("broker:(tcp://localhost:61616)/BrokerA?persistent=false&useJmx=false"));
      createBroker(new URI("broker:(tcp://localhost:61617)/BrokerB?persistent=false&useJmx=false"));
   }
}
