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   * "License"); you may not use this file except in compliance
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   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
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  package org.apache.cassandra.distributed.test.cdc;
  
  import java.util.function.Consumer;
  
  
  import org.apache.cassandra.db.commitlog.CommitLog;
  import org.apache.cassandra.db.commitlog.CommitLogSegment;
  import org.apache.cassandra.distributed.Cluster;
  import org.apache.cassandra.distributed.api.Feature;
  import org.apache.cassandra.distributed.test.TestBaseImpl;
  
  import static org.apache.cassandra.distributed.shared.AssertUtils.assertRows;
  import static org.apache.cassandra.distributed.shared.AssertUtils.assertTrue;
  import static org.apache.cassandra.distributed.shared.AssertUtils.row;
  
  public abstract class ToggleCDCOnRepair extends TestBaseImpl
  {
      Consumer<Cluster> getRepairEnabledRepairAssertion()
      {
          return cluster -> {
              cluster.get(2).runOnInstance(() -> {
                  boolean containCDCInLog = CommitLog.instance.segmentManager
                                            .getActiveSegments()
                                            .stream()
                                            .anyMatch(s -> s.getCDCState() == CommitLogSegment.CDCState.CONTAINS);
                  assertTrue("Mutation should be added to commit log when cdc_on_repair_enabled is true",
                             containCDCInLog);
              });
          };
      }
  
      Consumer<Cluster> getRepairDisabledRepairAssertion()
      {
          return cluster -> {
              cluster.get(2).runOnInstance(() -> {
                  boolean containCDCInLog = CommitLog.instance.segmentManager
                                            .getActiveSegments()
                                            .stream()
                                            .allMatch(s -> s.getCDCState() != CommitLogSegment.CDCState.CONTAINS);
                  assertTrue("No mutation should be added to commit log when cdc_on_repair_enabled is false",
                             containCDCInLog);
              });
          };
      }
  
      // test helper to repair data between nodes when cdc_on_repair_enabled is on or off.
      void testCDCOnRepairEnabled(boolean enabled, Consumer<Cluster> assertion, boolean constraintsEnabled) throws Exception
      {
          try (Cluster cluster = init(Cluster.build(2)
                                             .withConfig(c -> c.set("cdc_enabled", true)
                                                               .set("cdc_on_repair_enabled", enabled)
                                                               .with(Feature.NETWORK)
                                                               .with(Feature.GOSSIP))
                                             .start()))
          {
              cluster.schemaChange(withKeyspace("CREATE TABLE %s.tbl (k INT PRIMARY KEY, v INT) WITH cdc=true"));
  
              // Data only in node1
              cluster.get(1).executeInternal(withKeyspace("INSERT INTO %s.tbl (k, v) VALUES (1, 1)"));
  
              if (constraintsEnabled)
                  cluster.schemaChange(withKeyspace("ALTER TABLE %s.tbl ALTER v CHECK v != 1"));
  
              Object[][] result = cluster.get(1).executeInternal(withKeyspace("SELECT * FROM %s.tbl WHERE k = 1"));
              assertRows(result, row(1, 1));
              result = cluster.get(2).executeInternal(withKeyspace("SELECT * FROM %s.tbl WHERE k = 1"));
              assertRows(result);
  
              // repair
              cluster.get(1).flush(KEYSPACE);
              cluster.get(2).nodetool("repair", KEYSPACE, "tbl");
  
              // verify node2 now have data
              result = cluster.get(2).executeInternal(withKeyspace("SELECT * FROM %s.tbl WHERE k = 1"));
              assertRows(result, row(1, 1));
  
              assertion.accept(cluster);
          }
      }
  }
  