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.cassandra.distributed.test.tcm;
  
  import java.io.IOException;
  import java.util.concurrent.ExecutionException;
  import java.util.concurrent.TimeUnit;
  
  import org.junit.Test;
  
  import org.apache.cassandra.distributed.Cluster;
  import org.apache.cassandra.distributed.api.ConsistencyLevel;
  import org.apache.cassandra.distributed.api.Feature;
  import org.apache.cassandra.distributed.api.IInvokableInstance;
  import org.apache.cassandra.distributed.api.TokenSupplier;
  import org.apache.cassandra.distributed.shared.Uninterruptibles;
  import org.apache.cassandra.distributed.test.TestBaseImpl;
  import org.apache.cassandra.locator.InetAddressAndPort;
  import org.apache.cassandra.tcm.ClusterMetadata;
  import org.apache.cassandra.tcm.membership.NodeId;
  import org.apache.cassandra.utils.FBUtilities;
  
  import static org.apache.cassandra.distributed.shared.ClusterUtils.addInstance;
  import static org.apache.cassandra.distributed.shared.ClusterUtils.awaitRingJoin;
  import static org.apache.cassandra.distributed.shared.ClusterUtils.startHostReplacement;
  import static org.junit.Assert.assertTrue;
  
  public class CMSPlacementAfterReplacementTest extends TestBaseImpl
  {
      @Test
      public void replaceSmallerRF() throws IOException, ExecutionException, InterruptedException
      {
          TokenSupplier even = TokenSupplier.evenlyDistributedTokens(4);
          try (Cluster cluster = init(Cluster.build(4)
                                        .withConfig(c -> c.with(Feature.GOSSIP, Feature.NETWORK))
                                        .withTokenSupplier(node -> even.token(node == 5 ? 2 : node))
                                        .start()))
          {
              replacementHelper(cluster);
          }
      }
  
      @Test
      public void replaceEqualRF() throws IOException, ExecutionException, InterruptedException
      {
          TokenSupplier even = TokenSupplier.evenlyDistributedTokens(3);
          try (Cluster cluster = init(Cluster.build(3)
                                             .withConfig(c -> c.with(Feature.GOSSIP, Feature.NETWORK))
                                             .withTokenSupplier(node -> even.token(node == 4 ? 2 : node))
                                             .start()))
          {
              replacementHelper(cluster);
          }
      }
  
      /**
       * 1. make the CMS contain 3 nodes
       * 2. make sure node2 is in the CMS
       * 3. replace node2
       * 4. make sure the replacement node appears as a member of the CMS
       */
      private static void replacementHelper(Cluster cluster) throws ExecutionException, InterruptedException
      {
          IInvokableInstance nodeToRemove = cluster.get(2);
          cluster.get(1).nodetoolResult("cms", "reconfigure", "3").asserts().success();
          cluster.get(2).runOnInstance(() -> {
              assertTrue(ClusterMetadata.current().isCMSMember(FBUtilities.getBroadcastAddressAndPort()));
          });
          nodeToRemove.shutdown().get();
          IInvokableInstance replacingNode = addInstance(cluster, nodeToRemove.config(),
                                                         c -> c.set("auto_bootstrap", true)
                                                               .set("progress_barrier_min_consistency_level", ConsistencyLevel.ONE));
          startHostReplacement(nodeToRemove, replacingNode, (ignore1_, ignore2_) -> {});
          awaitRingJoin(cluster.get(1), replacingNode);
          awaitRingJoin(replacingNode, cluster.get(1));
          int replacementNodeId = replacingNode.callOnInstance(() -> ClusterMetadata.current().myNodeId().id());
          assertInCMS(cluster, replacementNodeId);
      }
  
      static void assertInCMS(Cluster cluster, int nodeId)
      {
          cluster.get(1).runOnInstance(() -> {
              InetAddressAndPort ep = ClusterMetadata.current().directory.endpoint(new NodeId(nodeId));
              int tries = 0;
              while (!ClusterMetadata.current().isCMSMember(ep))
              {
                  if (tries > 10)
                      throw new AssertionError(ep + " did not become a CMS member after " + tries + " seconds");
                  tries++;
                  Uninterruptibles.sleepUninterruptibly(1, TimeUnit.SECONDS);
              }
          });
      }
  }
  