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.server;
  
  import org.apache.activemq.artemis.api.core.client.ClientMessage;
  import org.apache.activemq.artemis.core.server.impl.ScaleDownHandler;
  import org.apache.activemq.artemis.tests.integration.cluster.distribution.ClusterTestBase;
  import org.apache.activemq.artemis.tests.util.Wait;
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Test;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertNotNull;
  
  public class ScaleDownCommitIntervalTest extends ClusterTestBase {
     final int TEST_SIZE = 1000;
  
     @Override
     @BeforeEach
     public void setUp() throws Exception {
        super.setUp();
        setupPrimaryServer(0, isFileStorage(), true, true);
        setupPrimaryServer(1, isFileStorage(), true, true);
        startServers(0, 1);
        setupSessionFactory(0, true);
        setupSessionFactory(1, true);
     }
  
     @Test
     public void testSmallCommitInterval() throws Exception {
        testCommitInterval(1);
     }
  
     @Test
     public void testMediumCommitInterval() throws Exception {
        testCommitInterval((int) (TEST_SIZE * 0.33));
     }
  
     @Test
     public void testLargeCommitInterval() throws Exception {
        testCommitInterval((int) (TEST_SIZE * 0.66));
     }
  
     @Test
     public void testMaxCommitInterval() throws Exception {
        testCommitInterval(-1);
     }
  
     private void testCommitInterval(int commitInterval) throws Exception {
        final String addressName = "testAddress";
        final String queueName1 = "testQueue1";
        final String queueName2 = "testQueue2";
  
        // create 2 queues on each node mapped to the same address
        createQueue(0, addressName, queueName1, null, true);
        createQueue(0, addressName, queueName2, null, true);
        createQueue(1, addressName, queueName1, null, true);
        createQueue(1, addressName, queueName2, null, true);
  
        // send messages to node 0
        send(0, addressName, TEST_SIZE, true, null);
  
        // consume a message from queue 2
        addConsumer(1, 0, queueName2, null, false);
        ClientMessage clientMessage = consumers[1].getConsumer().receive(250);
        assertNotNull(clientMessage);
        clientMessage.acknowledge();
        consumers[1].getSession().commit();
        removeConsumer(1);
  
        Wait.assertEquals((long) TEST_SIZE, () ->  servers[0].locateQueue(queueName1).getMessageCount(), 500, 20);
        Wait.assertEquals((long) TEST_SIZE - 1, () ->  servers[0].locateQueue(queueName2).getMessageCount(), 500, 20);
  
        assertEquals((long) TEST_SIZE, performScaledown(commitInterval));
  
        // trigger scaleDown from node 0 to node 1
        servers[0].stop();
  
        Wait.assertEquals((long) TEST_SIZE, () -> servers[1].locateQueue(queueName1).getMessageCount(), 500, 20);
        Wait.assertEquals((long) TEST_SIZE - 1, () -> servers[1].locateQueue(queueName2).getMessageCount(), 500, 20);
     }
  
     private long performScaledown(int commitInterval) throws Exception {
        ScaleDownHandler handler = new ScaleDownHandler(servers[0].getPagingManager(), servers[0].getPostOffice(), servers[0].getNodeManager(), servers[0].getClusterManager().getClusterController(), servers[0].getStorageManager(), commitInterval);
  
        return handler.scaleDownMessages(sfs[1], servers[1].getNodeID(), servers[0].getConfiguration().getClusterUser(), servers[0].getConfiguration().getClusterPassword());
     }
  }
  