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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.
   */
  
  package org.apache.cassandra.repair.autorepair;
  
  import java.util.HashMap;
  import java.util.Map;
  
  import org.junit.Before;
  import org.junit.BeforeClass;
  import org.junit.Test;
  import org.junit.Assert;
  
  import org.apache.cassandra.config.DatabaseDescriptor;
  import org.apache.cassandra.config.DurationSpec;
  import org.apache.cassandra.cql3.CQLTester;
  import org.apache.cassandra.db.Keyspace;
  import org.apache.cassandra.exceptions.ConfigurationException;
  import org.apache.cassandra.schema.KeyspaceMetadata;
  import org.apache.cassandra.schema.KeyspaceParams;
  import org.apache.cassandra.schema.ReplicationParams;
  import org.apache.cassandra.repair.autorepair.AutoRepairConfig.RepairType;
  import org.apache.cassandra.schema.SchemaTestUtil;
  import org.apache.cassandra.service.AutoRepairService;
  
  import static org.apache.cassandra.Util.setAutoRepairEnabled;
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertTrue;
  
  /**
   * Unit tests for {@link org.apache.cassandra.repair.autorepair.AutoRepair}
   */
  public class AutoRepairTest extends CQLTester
  {
      @BeforeClass
      public static void setupClass() throws Exception
      {
          setAutoRepairEnabled(true);
          requireNetwork();
      }
  
      @Before
      public void setup()
      {
          AutoRepair.SLEEP_IF_REPAIR_FINISHES_QUICKLY = new DurationSpec.IntSecondsBound("0s");
          DatabaseDescriptor.setCDCOnRepairEnabled(false);
          DatabaseDescriptor.setMaterializedViewsOnRepairEnabled(false);
          DatabaseDescriptor.getAutoRepairConfig().setAutoRepairEnabled(RepairType.FULL, true);
          DatabaseDescriptor.getAutoRepairConfig().setAutoRepairEnabled(RepairType.INCREMENTAL, true);
          AutoRepairService.setup();
      }
  
      @Test
      public void testSetup()
      {
          AutoRepair.instance.setup();
          assertEquals(RepairType.values().length, AutoRepair.instance.repairExecutors.size());
          for (RepairType repairType : AutoRepair.instance.repairExecutors.keySet())
          {
              int expectedTasks = AutoRepair.instance.repairExecutors.get(repairType).getPendingTaskCount()
                      + AutoRepair.instance.repairExecutors.get(repairType).getActiveTaskCount();
              assertTrue(String.format("Expected > 0 task in queue for %s but was %s", repairType, expectedTasks),
                           expectedTasks > 0);
          }
      }
  
      @Test
      public void testSafeGuardSetupCall()
      {
          // only one should be setup, and rest should be ignored
          AutoRepair.instance.setup();
          AutoRepair.instance.setup();
          AutoRepair.instance.setup();
  
          assertEquals(RepairType.values().length, AutoRepair.instance.repairExecutors.size());
          for (RepairType repairType : AutoRepair.instance.repairExecutors.keySet())
          {
              int expectedTasks = AutoRepair.instance.repairExecutors.get(repairType).getPendingTaskCount()
                                  + AutoRepair.instance.repairExecutors.get(repairType).getActiveTaskCount();
              assertTrue(String.format("Expected > 0 task in queue for %s but was %s", repairType, expectedTasks),
                         expectedTasks > 0);
          }
      }
  
      @Test(expected = ConfigurationException.class)
      public void testSetupFailsWhenIREnabledWithCDCReplay()
      {
          DatabaseDescriptor.getAutoRepairConfig().setAutoRepairEnabled(RepairType.INCREMENTAL, true);
          DatabaseDescriptor.setMaterializedViewsOnRepairEnabled(true);
          DatabaseDescriptor.setCDCEnabled(true);
          DatabaseDescriptor.setCDCOnRepairEnabled(true);
          AutoRepair.instance.isSetupDone = false;
          AutoRepair.instance.setup();
      }
  
      @Test
      public void testNoFailureIfMVRepairOnButConfigIsOff()
      {
          DatabaseDescriptor.getAutoRepairConfig().setAutoRepairEnabled(RepairType.INCREMENTAL, true);
          DatabaseDescriptor.getAutoRepairConfig().setMaterializedViewRepairEnabled(RepairType.INCREMENTAL, false);
          DatabaseDescriptor.setCDCOnRepairEnabled(false);
          DatabaseDescriptor.setMaterializedViewsOnRepairEnabled(true);
          AutoRepair.instance.setup();
      }
  
      @Test(expected = ConfigurationException.class)
      public void testSetupFailsWhenIREnabledWithMVReplay()
      {
          DatabaseDescriptor.getAutoRepairConfig().setAutoRepairEnabled(RepairType.INCREMENTAL, true);
          DatabaseDescriptor.getAutoRepairConfig().setMaterializedViewRepairEnabled(RepairType.INCREMENTAL, true);
          DatabaseDescriptor.setCDCOnRepairEnabled(false);
          DatabaseDescriptor.setMaterializedViewsOnRepairEnabled(true);
          AutoRepair.instance.isSetupDone = false;
          AutoRepair.instance.setup();
      }
  
      @Test
      public void testCheckNTSreplicationNodeInsideOutsideDC()
      {
          String ksname1 = "ks_nts1";
          String ksname2 = "ks_nts2";
          Map<String, String> configOptions1 = new HashMap<>();
          configOptions1.put("datacenter1", "3");
          configOptions1.put(ReplicationParams.CLASS, "NetworkTopologyStrategy");
          SchemaTestUtil.addOrUpdateKeyspace(KeyspaceMetadata.create(ksname1, KeyspaceParams.create(false, configOptions1)), false);
          Map<String, String> configOptions2 = new HashMap<>();
          configOptions2.put("datacenter2", "3");
          configOptions2.put(ReplicationParams.CLASS, "NetworkTopologyStrategy");
          SchemaTestUtil.addOrUpdateKeyspace(KeyspaceMetadata.create(ksname2, KeyspaceParams.create(false, configOptions2)), false);
  
          for (Keyspace ks : Keyspace.all())
          {
              if (ks.getName().equals(ksname1))
              {
                  // case 1 :
                  // node reside in "datacenter1"
                  // keyspace has replica in "datacenter1"
                  Assert.assertTrue(AutoRepairUtils.shouldConsiderKeyspace(ks));
              }
              else if (ks.getName().equals(ksname2))
              {
                  // case 2 :
                  // node reside in "datacenter1"
                  // keyspace has replica in "datacenter2"
                  Assert.assertFalse(AutoRepairUtils.shouldConsiderKeyspace(ks));
              }
          }
      }
  }
  