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.tcm.serialization;
  
  import java.util.ArrayList;
  import java.util.Collections;
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  
  import org.apache.cassandra.tcm.ClusterMetadata;
  import org.apache.cassandra.tcm.membership.NodeVersion;
  
  public enum Version
  {
      OLD(-1),
      V0(0),
      /**
       *  - Moved Partitioner in ClusterMetadata serializer to be the first field
       *  - Added a counter to Directory serializer to keep track of NodeIds
       */
      V1(1),
      /**
       *  - Added version to PlacementForRange serializer
       *  - Serialize MemtableParams when serializing TableParams
       */
      V2(2),
      /**
       *  - down nodes serialized in PrepareCMSReconfiguration
       */
      V3(3),
      /**
       *  - Serialize allowAutoSnapshot and incrementalBackups when serializing TableParams
       */
      V4(4),
      /**
       *  - AlterSchema includes execution timestamp
       *  - PreInitialize includes datacenter (affects local serialization on first CMS node only)
       */
      V5(5),
      /**
       *  - CEP-42 - Constraints framework. New version due to modifications in table metadata serialization.
       */
      V6(6),
      /**
       *  - Track nodes removed
       *  - Column Metadata now stores a unique id
       *  - Added AccordFastPath
       *  - Added ConsensusMigrationState
       *  - Added AccordStaleReplicas
       *  - TableParam now has pendingDrop (accord table drop is multistep)
       */
      V7(7),
  
      UNKNOWN(Integer.MAX_VALUE);
  
      /**
       * The version that Accord was added to TCM.
       */
      public static final Version MIN_ACCORD_VERSION = V7;
  
      private static Map<Integer, Version> values = new HashMap<>();
      static
      {
          for (Version v : values())
              values.put(v.version, v);
      }
  
      private final int version;
      Version(int version)
      {
          this.version = version;
      }
  
      /**
       * Minimum serialization version known to all nodes in the cluster.
       */
      public static Version minCommonSerializationVersion()
      {
          ClusterMetadata metadata = ClusterMetadata.currentNullable();
          if (metadata != null)
              return metadata.directory.clusterMinVersion.serializationVersion();
          return NodeVersion.CURRENT.serializationVersion();
  
      }
  
      public int asInt()
      {
          return version;
      }
  
      public boolean equals(Version other)
      {
          return version == other.version;
      }
  
      public boolean isAtLeast(Version other)
      {
          return version >= other.version;
      }
  
      public boolean isBefore(Version other)
      {
          return version < other.version;
      }
  
      public static Version fromInt(int i)
      {
          Version v = values.get(i);
          if (v != null)
              return v;
  
          throw new IllegalArgumentException("Unsupported metadata version (" + i + ")");
      }
  
      public List<Version> greaterThanOrEqual()
      {
          Version[] all = Version.values();
          if (ordinal() == all.length - 1)
              return Collections.singletonList(this);
          List<Version> values = new ArrayList<>(all.length - ordinal());
          for (int i = ordinal(); i < all.length; i++)
              values.add(all[i]);
          return values;
      }
  }
  