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.artemis.tests.integration.amqp.paging;
  
  import static org.junit.jupiter.api.Assertions.assertNotNull;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  import java.util.Map;
  import java.util.concurrent.TimeUnit;
  
  import org.apache.activemq.artemis.api.core.SimpleString;
  import org.apache.activemq.artemis.core.paging.PagingStore;
  import org.apache.activemq.artemis.core.server.ActiveMQServer;
  import org.apache.activemq.artemis.core.server.Queue;
  import org.apache.activemq.artemis.core.settings.impl.AddressSettings;
  import org.apache.activemq.artemis.tests.integration.amqp.AmqpClientTestSupport;
  import org.apache.activemq.artemis.tests.util.Wait;
  import org.apache.activemq.transport.amqp.client.AmqpClient;
  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.AmqpSender;
  import org.apache.activemq.transport.amqp.client.AmqpSession;
  import org.junit.jupiter.api.Test;
  import org.junit.jupiter.api.Timeout;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  import java.lang.invoke.MethodHandles;
  
  public class AmqpMaxReadPagingTest extends AmqpClientTestSupport {
  
     private static final Logger logger = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());
  
     public AmqpMaxReadPagingTest() {
     }
  
     @Override
     protected void addConfiguration(ActiveMQServer server) {
        super.addConfiguration(server);
        final Map<String, AddressSettings> addressesSettings = server.getConfiguration()
           .getAddressSettings();
        addressesSettings.get("#").setMaxSizeMessages(1)
           .setMaxSizeBytes(100000)
           .setPageSizeBytes(10000).setMaxReadPageMessages(10).setMaxReadPageBytes(10 * 1024 * 1024);
  
        server.getConfiguration().setMessageExpiryScanPeriod(-1);
     }
  
     @Test
     @Timeout(60)
     public void testMaxReadPage() throws Exception {
        final String data = "0".repeat(1000);
        final int MSG_COUNT = 100;
  
        AmqpClient client = createAmqpClient();
        AmqpConnection connection = addConnection(client.connect());
        runAfter(connection::close);
        AmqpSession session = connection.createSession();
  
        Queue queue = server.locateQueue(getQueueName());
        assertNotNull(queue);
        queue.getPagingStore().startPaging();
  
        AmqpSender sender = session.createSender(getQueueName(), true);
  
        AmqpReceiver receiver = session.createReceiver(getQueueName());
        receiver.setPresettle(true);
        for (int i = 0; i < MSG_COUNT; i++) {
           AmqpMessage message = new AmqpMessage();
           message.setText(data);
           message.setDurable(true);
           sender.send(message);
        }
        sender.close();
        Wait.assertEquals(MSG_COUNT, queue::getMessageCount);
        receiver.flow(MSG_COUNT);
        assertNotNull(receiver.receive(10, TimeUnit.SECONDS)); // wait some time so we have some data
        if (receiver.getPrefetchSize() > 10) {
           logger.warn("Receiver has an unexpected size of {} elements on the client buffer", receiver.getPrefetchSize());
        }
        PagingStore pagingStore = server.getPagingManager().getPageStore(SimpleString.of(getQueueName()));
        assertTrue(pagingStore.isPaging());
        assertTrue(receiver.getPrefetchSize() <= 10); // we should not have more than page-read messages
  
        Thread.sleep(500); // it is important to have some quiet period to make sure all previous tasks were emptied
        for (int i = 0; i < MSG_COUNT - 1; i++) {
           AmqpMessage message = receiver.receive(10, TimeUnit.SECONDS);
           assertNotNull(message);
           System.out.println("Received " + i);
           message.accept();
        }
  
        receiver.close();
        connection.close();
     }
  
  }
  