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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.distributed.test;
  
  import java.util.UUID;
  
  import org.junit.Ignore;
  
  import org.apache.cassandra.auth.CassandraRoleManager;
  import org.apache.cassandra.distributed.Cluster;
  import org.apache.cassandra.distributed.api.IInvokableInstance;
  import org.apache.cassandra.distributed.api.IIsolatedExecutor;
  import org.apache.cassandra.gms.FailureDetector;
  import org.apache.cassandra.hints.HintsService;
  import org.apache.cassandra.io.util.File;
  import org.apache.cassandra.io.util.FileUtils;
  import org.apache.cassandra.locator.InetAddressAndPort;
  import org.apache.cassandra.metrics.StorageMetrics;
  import org.apache.cassandra.service.StorageService;
  import org.assertj.core.api.Assertions;
  
  import static java.util.concurrent.TimeUnit.MINUTES;
  import static java.util.concurrent.TimeUnit.SECONDS;
  import static org.apache.cassandra.distributed.api.ConsistencyLevel.ONE;
  import static org.assertj.core.api.Assertions.assertThat;
  import static org.awaitility.Awaitility.await;
  
  @Ignore
  public abstract class AbstractHintWindowTest extends TestBaseImpl
  {
      void waitUntilNoHints(IInvokableInstance node1, UUID node2UUID)
      {
          await().pollInterval(10, SECONDS)
                 .timeout(1, MINUTES)
                 .until(() -> getTotalHintsSize(node1, node2UUID) == 0);
      }
  
      Long getTotalHintsSize(IInvokableInstance node, UUID node2UUID)
      {
          return node.appliesOnInstance((IIsolatedExecutor.SerializableFunction<UUID, Long>) secondNode -> {
              return HintsService.instance.getTotalHintsSize(secondNode);
          }).apply(node2UUID);
      }
  
      void pauseHintsDelivery(IInvokableInstance node)
      {
          node.runOnInstance((IIsolatedExecutor.SerializableRunnable) () -> {
              HintsService.instance.pauseDispatch();
          });
      }
  
      void transferHints(IInvokableInstance node, UUID transferToNode)
      {
          node.runOnInstance((IIsolatedExecutor.SerializableRunnable) () -> {
              HintsService.instance.transferHints(() -> transferToNode);
          });
      }
  
      void waitUntilNodeState(IInvokableInstance node, UUID node2UUID, boolean shouldBeOnline)
      {
          await().pollInterval(10, SECONDS)
                 .timeout(1, MINUTES)
                 .until(() -> node.appliesOnInstance((IIsolatedExecutor.SerializableBiFunction<UUID, Boolean, Boolean>) (secondNode, online) -> {
                     InetAddressAndPort address = StorageService.instance.getEndpointForHostId(secondNode);
                     return online == FailureDetector.instance.isAlive(address);
                 }).apply(node2UUID, shouldBeOnline));
      }
  
  
      Long getTotalHintsCount(IInvokableInstance node)
      {
          return node.callOnInstance(() -> StorageMetrics.totalHints.getCount());
      }
  
      void assertHintsSizes(IInvokableInstance node, UUID node2UUID)
      {
          // we indeed have some hints in its dir
          File hintsDir = new File(node.config().getString("hints_directory"));
          assertThat(FileUtils.folderSize(hintsDir)).isPositive();
  
          // and there is positive size of hints on the disk for the second node
          long totalHintsSize = node.appliesOnInstance((IIsolatedExecutor.SerializableFunction<UUID, Long>) secondNode -> {
              return HintsService.instance.getTotalHintsSize(secondNode);
          }).apply(node2UUID);
  
          Assertions.assertThat(totalHintsSize).isPositive();
      }
  
      Long insertData(final Cluster cluster)
      {
          // insert data and sleep every 10k to have a chance to flush hints
          for (int i = 0; i < 70000; i++)
          {
              cluster.coordinator(1)
                     .execute(withKeyspace("INSERT INTO %s.cf (k, c1) VALUES (?, ?);"),
                              ONE, UUID.randomUUID().toString(), UUID.randomUUID().toString());
  
              if (i % 10000 == 0)
                  await().atLeast(2, SECONDS).pollDelay(2, SECONDS).until(() -> true);
          }
  
          await().atLeast(3, SECONDS).pollDelay(3, SECONDS).until(() -> true);
  
          // we see that metrics are updated
  
          await().until(() -> cluster.get(1).callOnInstance(() -> StorageMetrics.totalHints.getCount()) > 0);
          return cluster.get(1).callOnInstance(() -> StorageMetrics.totalHints.getCount());
      }
  
      static void waitForExistingRoles(Cluster cluster)
      {
          cluster.forEach(instance -> await().pollDelay(1, SECONDS)
                                             .pollInterval(1, SECONDS)
                                             .atMost(60, SECONDS)
                                             .until(() -> instance.callOnInstance(CassandraRoleManager::hasExistingRoles)));
      }
  }
  