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.locator;
  
  import org.apache.cassandra.config.DatabaseDescriptor;
  import org.apache.cassandra.dht.IPartitioner;
  import org.apache.cassandra.distributed.test.log.ClusterMetadataTestHelper;
  import org.apache.cassandra.tcm.ClusterMetadataService;
  
  public class WithPartitioner implements AutoCloseable
  {
      private ClusterMetadataService toRestore;
  
      public WithPartitioner(IPartitioner partitioner)
      {
          toRestore = ClusterMetadataService.instance();
          DatabaseDescriptor.setPartitionerUnsafe(partitioner);
          ClusterMetadataService withNewPartitioner = ClusterMetadataTestHelper.instanceForTest();
          ClusterMetadataService.unsetInstance();
          ClusterMetadataService.setInstance(withNewPartitioner);
      }
  
      @Override
      public void close()
      {
          ClusterMetadataService.unsetInstance();
          ClusterMetadataService.setInstance(toRestore);
          DatabaseDescriptor.setPartitionerUnsafe(toRestore.metadata().partitioner);
      }
  }
  
  