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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,
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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.failover;
  
  import static org.junit.jupiter.api.Assertions.assertFalse;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  import java.util.concurrent.TimeUnit;
  
  import org.apache.activemq.artemis.core.config.MetricsConfiguration;
  import org.apache.activemq.artemis.core.config.ha.SharedStorePrimaryPolicyConfiguration;
  import org.apache.activemq.artemis.core.config.ha.SharedStoreBackupPolicyConfiguration;
  import org.apache.activemq.artemis.core.server.ActiveMQServer;
  import org.apache.activemq.artemis.core.server.cluster.impl.MessageLoadBalancingType;
  import org.apache.activemq.artemis.core.server.metrics.plugins.SimpleMetricsPlugin;
  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;
  
  public class SharedStoreMetricsLeakTest extends ClusterTestBase {
  
     @Override
     @BeforeEach
     public void setUp() throws Exception {
        super.setUp();
  
        setupServers();
     }
  
     private void setupServers() throws Exception {
        setupPrimaryServer(0, isFileStorage(), HAType.SharedStore, isNetty(), false);
        setupBackupServer(1, 0, isFileStorage(), HAType.SharedStore, isNetty());
  
        getServer(0).getConfiguration().setHAPolicyConfiguration(new SharedStorePrimaryPolicyConfiguration().setFailoverOnServerShutdown(true));
        getServer(0).getConfiguration().setMetricsConfiguration(new MetricsConfiguration().setJvmThread(false).setJvmGc(false).setJvmMemory(false).setPlugin(new SimpleMetricsPlugin().init(null)));
        getServer(1).getConfiguration().setHAPolicyConfiguration(new SharedStoreBackupPolicyConfiguration().setFailoverOnServerShutdown(true).setAllowFailBack(true));
        getServer(1).getConfiguration().setMetricsConfiguration(new MetricsConfiguration().setJvmThread(false).setJvmGc(false).setJvmMemory(false).setPlugin(new SimpleMetricsPlugin().init(null)));
  
        // configure cluster for bother servers
        setupClusterConnection("cluster", "queues", MessageLoadBalancingType.ON_DEMAND, 1, isNetty(), 0, 1);
        setupClusterConnection("cluster", "queues", MessageLoadBalancingType.ON_DEMAND, 1, isNetty(), 1, 0);
     }
  
     private boolean isNetty() {
        return true;
     }
  
     @Test
     public void testForMeterLeaks() throws Exception {
        ActiveMQServer primary = getServer(0);
        ActiveMQServer backup = getServer(1);
  
        primary.start();
        assertTrue(primary.waitForActivation(5, TimeUnit.SECONDS));
  
        backup.start();
        assertFalse(backup.waitForActivation(1, TimeUnit.SECONDS));
  
        // there should be a handful of metrics available from the ActiveMQServerImpl itself
        long baseline = backup.getMetricsManager().getMeterRegistry().getMeters().size();
  
        primary.stop();
        assertTrue(backup.waitForActivation(5, TimeUnit.SECONDS));
  
        // after failover more meters should get registered
        Wait.assertTrue(() -> backup.getMetricsManager().getMeterRegistry().getMeters().size() > baseline, 2000, 100);
  
        primary.start();
        assertTrue(primary.waitForActivation(5, TimeUnit.SECONDS));
  
        // after failback the number of registered meters should return to baseline
        Wait.assertTrue(() -> backup.getMetricsManager().getMeterRegistry().getMeters().size() == baseline, 2000, 100);
  
        primary.stop();
        backup.stop();
     }
  }
  