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.sidecar.routes.tokenrange;
  
  import java.math.BigInteger;
  import java.util.Arrays;
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  
  import com.google.common.collect.Range;
  import org.junit.jupiter.api.extension.ExtendWith;
  
  import io.vertx.junit5.VertxExtension;
  import io.vertx.junit5.VertxTestContext;
  import org.apache.cassandra.sidecar.testing.bytebuddy.BBHelperJoiningNode;
  import org.apache.cassandra.testing.CassandraIntegrationTest;
  import org.apache.cassandra.testing.ConfigurableCassandraTestContext;
  
  /**
   * Cluster expansion scenarios integration tests for token range replica mapping endpoint with the in-jvm
   * dtest framework.
   *
   * Note: Some related test classes are broken down to have a single test case to parallelize test execution and
   * therefore limit the instance size required to run the tests from CircleCI as the in-jvm-dtests tests are memory bound
   */
  @ExtendWith(VertxExtension.class)
  public class JoiningTestSingleNode extends JoiningBaseTest
  {
      @CassandraIntegrationTest(nodesPerDc = 5, newNodesPerDc = 1, network = true, buildCluster = false)
      void retrieveMappingWithJoiningNode(VertxTestContext context,
                                          ConfigurableCassandraTestContext cassandraTestContext) throws Exception
      {
          BBHelperJoiningNode.reset();
          runJoiningTestScenario(context,
                                 cassandraTestContext,
                                 // Test case involves 5 node cluster with 1 joining node
                                 // We intercept the bootstrap of the joining node (6) to validate token ranges
                                 (cl, num) -> BBHelperJoiningNode.install(cl, num, 6),
                                 BBHelperJoiningNode.transientStateStart,
                                 BBHelperJoiningNode.transientStateEnd,
                                 generateExpectedRangeMappingSingleJoiningNode());
      }
  
      /**
       * Generates expected token range and replica mappings specific to the test case involving a 5 node cluster
       * with the additional node joining the cluster
       * <p>
       * Expected ranges are generated by adding RF replicas per range in increasing order. The replica-sets in subsequent
       * ranges cascade with the next range excluding the first replica, and including the next replica from the nodes.
       * eg.
       * Range 1 - A, B, C
       * Range 2 - B, C, D
       * <p>
       * Ranges that include the joining node will have [RF + no. joining nodes in replica-set] replicas with
       * the replicas being the existing nodes in ring-order.
       * eg.
       * Range 1 - A, B, C
       * Range 2 - B, C, D (with E being the joining node)
       * Expected Range 2 - B, C, D, E
       */
      private HashMap<String, Map<Range<BigInteger>, List<String>>> generateExpectedRangeMappingSingleJoiningNode()
      {
          List<Range<BigInteger>> expectedRanges = generateExpectedRanges();
          Map<Range<BigInteger>, List<String>> mapping = new HashMap<>();
          mapping.put(expectedRanges.get(0), Arrays.asList("127.0.0.1", "127.0.0.2", "127.0.0.3", "127.0.0.6"));
          mapping.put(expectedRanges.get(1), Arrays.asList("127.0.0.2", "127.0.0.3", "127.0.0.4", "127.0.0.6"));
  
          mapping.put(expectedRanges.get(2), Arrays.asList("127.0.0.2", "127.0.0.3", "127.0.0.4"));
          mapping.put(expectedRanges.get(3), Arrays.asList("127.0.0.3", "127.0.0.4", "127.0.0.5"));
          mapping.put(expectedRanges.get(4), Arrays.asList("127.0.0.4", "127.0.0.5", "127.0.0.1"));
          mapping.put(expectedRanges.get(5), Arrays.asList("127.0.0.5", "127.0.0.1", "127.0.0.2", "127.0.0.6"));
          mapping.put(expectedRanges.get(6), Arrays.asList("127.0.0.1", "127.0.0.2", "127.0.0.3", "127.0.0.6"));
  
          return new HashMap<String, Map<Range<BigInteger>, List<String>>>()
          {
              {
                  put("datacenter1", mapping);
              }
          };
      }
  }
  