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   * 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.
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  package org.apache.activemq.artemis.tests.integration.cluster.distribution;
  
  import static org.junit.jupiter.api.Assertions.assertNull;
  import static org.junit.jupiter.api.Assertions.assertNotNull;
  
  import org.apache.activemq.artemis.api.core.QueueConfiguration;
  import org.apache.activemq.artemis.api.core.SimpleString;
  import org.apache.activemq.artemis.api.core.client.ClientMessage;
  import org.apache.activemq.artemis.core.filter.Filter;
  import org.apache.activemq.artemis.core.postoffice.Binding;
  import org.apache.activemq.artemis.core.postoffice.PostOffice;
  import org.apache.activemq.artemis.core.server.Queue;
  import org.apache.activemq.artemis.core.server.cluster.RemoteQueueBinding;
  import org.apache.activemq.artemis.core.server.cluster.impl.MessageLoadBalancingType;
  import org.apache.activemq.artemis.core.settings.impl.AddressSettings;
  import org.apache.activemq.artemis.tests.util.Wait;
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Test;
  
  public class MessageLoadBalancingTest extends ClusterTestBase {
  
     @Override
     @BeforeEach
     public void setUp() throws Exception {
        super.setUp();
  
        start();
     }
  
     private void start() throws Exception {
        setupServers();
  
        setRedistributionDelay(0);
     }
  
     protected boolean isNetty() {
        return false;
     }
  
     @Test
     public void testMessageLoadBalancingOff() throws Exception {
        setupCluster(MessageLoadBalancingType.OFF);
  
        startServers(0, 1);
  
        setupSessionFactory(0, isNetty());
        setupSessionFactory(1, isNetty());
  
        createQueue(0, "queues.testaddress", "queue0", null, false);
        createQueue(1, "queues.testaddress", "queue0", null, false);
  
        addConsumer(1, 1, "queue0", null);
  
        waitForBindings(0, "queues.testaddress", 1, 0, true);
        waitForBindings(1, "queues.testaddress", 1, 1, true);
  
        waitForBindings(0, "queues.testaddress", 1, 1, false);
        waitForBindings(1, "queues.testaddress", 1, 0, false);
  
        addConsumer(0, 0, "queue0", null);
  
        waitForBindings(0, "queues.testaddress", 1, 1, true);
        waitForBindings(1, "queues.testaddress", 1, 1, true);
  
        waitForBindings(0, "queues.testaddress", 1, 1, false);
        waitForBindings(1, "queues.testaddress", 1, 1, false);
  
        send(0, "queues.testaddress", 10, false, null);
  
        ClientMessage message = getConsumer(1).receive(1000);
        assertNull(message);
  
        for (int i = 0; i < 10; i++) {
           message = getConsumer(0).receive(5000);
           assertNotNull(message, "" + i);
           message.acknowledge();
        }
  
        ClientMessage clientMessage = getConsumer(0).receiveImmediate();
        assertNull(clientMessage);
     }
  
     @Test
     public void testMessageLoadBalancingWithFiltersUpdate() throws Exception {
        setupCluster(MessageLoadBalancingType.ON_DEMAND);
  
        startServers(0, 1);
  
        setupSessionFactory(0, isNetty());
        setupSessionFactory(1, isNetty());
  
        createQueue(0, "queues.testaddress", "queue0", null, false);
        createQueue(1, "queues.testaddress", "queue0", null, false);
  
        waitForBindings(0, "queues.testaddress", 1, 0, true);
        waitForBindings(0, "queues.testaddress", 1, 0, false);
        waitForBindings(1, "queues.testaddress", 1, 0, true);
        waitForBindings(1, "queues.testaddress", 1, 0, false);
  
        Binding[] bindings = new Binding[2];
        PostOffice[] po = new PostOffice[2];
        for (int i = 0; i < 2; i++) {
           po[i] = servers[i].getPostOffice();
           bindings[i] = po[i].getBinding(SimpleString.of("queue0"));
           assertNotNull(bindings[i]);
  
           Queue queue0 = (Queue)bindings[i].getBindable();
           assertNotNull(queue0);
  
           QueueConfiguration qconfig = queue0.getQueueConfiguration();
           assertNotNull(qconfig);
  
           qconfig.setFilterString("color = 'red'");
           po[i].updateQueue(qconfig, true);
        }
  
        SimpleString clusterName0 = bindings[1].getClusterName();
        RemoteQueueBinding remoteBinding = (RemoteQueueBinding) po[0].getBinding(clusterName0);
        assertNotNull(remoteBinding);
  
        Wait.assertEquals("color = 'red'", () -> {
           Filter filter = remoteBinding.getFilter();
           if (filter == null) {
              return filter;
           }
           return filter.getFilterString().toString();
        });
     }
  
     protected void setupCluster(final MessageLoadBalancingType messageLoadBalancingType) throws Exception {
        setupClusterConnection("cluster0", "queues", messageLoadBalancingType, 1, isNetty(), 0, 1);
  
        setupClusterConnection("cluster1", "queues", messageLoadBalancingType, 1, isNetty(), 1, 0);
     }
  
     protected void setRedistributionDelay(final long delay) {
        AddressSettings as = new AddressSettings().setRedistributionDelay(delay);
  
        getServer(0).getAddressSettingsRepository().addMatch("queues.*", as);
        getServer(1).getAddressSettingsRepository().addMatch("queues.*", as);
     }
  
     protected void setupServers() throws Exception {
        setupServer(0, isFileStorage(), isNetty());
        setupServer(1, isFileStorage(), isNetty());
     }
  
     protected void stopServers() throws Exception {
        closeAllConsumers();
  
        closeAllSessionFactories();
  
        closeAllServerLocatorsFactories();
  
        stopServers(0, 1);
  
        clearServer(0, 1);
     }
  
  }
  