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   * Licensed to the Apache Software Foundation (ASF) under one or more
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   * 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,
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   * 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 javax.jms.Connection;
  import javax.jms.ConnectionFactory;
  import javax.jms.MessageConsumer;
  import javax.jms.MessageProducer;
  import javax.jms.Session;
  import javax.jms.TextMessage;
  import javax.jms.Topic;
  import java.util.Map;
  import java.util.concurrent.atomic.AtomicInteger;
  
  import org.apache.activemq.artemis.api.core.RoutingType;
  import org.apache.activemq.artemis.core.persistence.impl.journal.JournalRecordIds;
  import org.apache.activemq.artemis.core.postoffice.impl.LocalQueueBinding;
  import org.apache.activemq.artemis.core.server.cluster.impl.MessageLoadBalancingType;
  import org.apache.activemq.artemis.core.server.impl.AddressInfo;
  import org.apache.activemq.artemis.tests.util.CFUtil;
  import org.junit.jupiter.api.Test;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertNotNull;
  
  public class PagedSNFTopicDistributionTest extends ClusterTestBase {
  
     public boolean isNetty() {
        return true;
     }
  
     @Test
     public void testTopicWhileSNFPaged() throws Exception {
        final int nmessages = 100;
        setupServer(0, true, isNetty());
        setupServer(1, true, isNetty());
  
        setupClusterConnection("cluster0", "topics", MessageLoadBalancingType.ON_DEMAND, 1, isNetty(), 0, 1);
        setupClusterConnection("cluster1", "topics", MessageLoadBalancingType.ON_DEMAND, 1, isNetty(), 1, 0);
  
        startServers(0, 1);
  
        waitForTopology(servers[0], 2);
        waitForTopology(servers[1], 2);
  
        setupSessionFactory(0, isNetty());
        setupSessionFactory(1, isNetty());
  
        servers[0].addAddressInfo(new AddressInfo("topics.A").addRoutingType(RoutingType.MULTICAST));
        servers[1].addAddressInfo(new AddressInfo("topics.A").addRoutingType(RoutingType.MULTICAST));
  
        ConnectionFactory factoryServer0 = CFUtil.createConnectionFactory("core", "tcp://localhost:61616");
        ConnectionFactory factoryServer1 = CFUtil.createConnectionFactory("core", "tcp://localhost:61617");
  
        // creating the subscription on server0
        try (Connection connection = factoryServer0.createConnection()) {
           connection.setClientID("server0");
           Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
           Topic topic = session.createTopic("topics.A");
           session.createDurableSubscriber(topic, "topic-server0");
        }
  
        // creating the subscription on server1
        try (Connection connection = factoryServer1.createConnection()) {
           connection.setClientID("server1");
           Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
           Topic topic = session.createTopic("topics.A");
           session.createDurableSubscriber(topic, "topic-server1");
        }
  
        waitForBindings(0, "topics.A", 1, 0, false);
        waitForBindings(1, "topics.A", 1, 0, false);
  
        // making everything to page
        servers[0].getPostOffice().getAllBindings().forEach(b -> {
           if (b instanceof LocalQueueBinding localQueueBinding) {
              try {
                 localQueueBinding.getQueue().getPagingStore().startPaging();
              } catch (Exception e) {
              }
           }
        });
  
        try (Connection connection = factoryServer0.createConnection()) {
           Session session = connection.createSession(true, Session.AUTO_ACKNOWLEDGE);
           Topic topic = session.createTopic("topics.A");
           MessageProducer producer = session.createProducer(topic);
           for (int i = 0; i < nmessages; i++) {
              producer.send(session.createTextMessage("msg " + i));
           }
           session.commit();
        }
  
        // verifying if everything is actually paged, nothing should be routed on the journal
        Map<Integer, AtomicInteger> counters =  countJournal(servers[0].getConfiguration());
        assertEquals(0, getCounter(JournalRecordIds.ADD_REF, counters), "There are routed messages on the journal");
        assertEquals(0, getCounter(JournalRecordIds.ADD_MESSAGE, counters), "There are routed messages on the journal");
        assertEquals(0, getCounter(JournalRecordIds.ADD_MESSAGE_PROTOCOL, counters), "There are routed messages on the journal");
  
        // consume remotely on server1
        try (Connection connection = factoryServer1.createConnection()) {
           connection.setClientID("server1");
           Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
           Topic topic = session.createTopic("topics.A");
           MessageConsumer consumer = session.createDurableSubscriber(topic, "topic-server1");
           connection.start();
           for (int i = 0; i < nmessages; i++) {
              TextMessage message = (TextMessage) consumer.receive(1000);
              assertNotNull(message);
              assertEquals("msg " + i, message.getText());
           }
        }
  
        // consume locally (to where the message was sent) on server0
        try (Connection connection = factoryServer0.createConnection()) {
           connection.setClientID("server0");
           Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
           Topic topic = session.createTopic("topics.A");
           MessageConsumer consumer = session.createDurableSubscriber(topic, "topic-server0");
           connection.start();
           for (int i = 0; i < nmessages; i++) {
              TextMessage message = (TextMessage) consumer.receive(1000);
              assertNotNull(message);
              assertEquals("msg " + i, message.getText());
           }
        }
  
     }
  
     private int getCounter(byte typeRecord, Map<Integer, AtomicInteger> values) {
        AtomicInteger value = values.get((int) typeRecord);
        if (value == null) {
           return 0;
        } else {
           return value.get();
        }
     }
  
  }
  