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.service.accord.txn;
  
  import java.io.IOException;
  import javax.annotation.Nullable;
  
  import accord.api.Data;
  import accord.api.Update;
  import org.apache.cassandra.db.ConsistencyLevel;
  import org.apache.cassandra.io.util.DataInputPlus;
  import org.apache.cassandra.io.util.DataOutputPlus;
  import org.apache.cassandra.service.accord.serializers.TableMetadatasAndKeys;
  import org.apache.cassandra.service.accord.serializers.TxnSerializer;
  import org.apache.cassandra.service.accord.serializers.Version;
  
  public abstract class AccordUpdate implements Update
  {
      public enum Kind
      {
          TXN(0),
          UNRECOVERABLE_REPAIR(1),
          NONE(2),
          ;
  
          int val;
  
          Kind(int val)
          {
              this.val = val;
          }
  
          public static Kind valueOf(int val)
          {
              switch(val)
              {
                  case 0:
                      return TXN;
                  case 1:
                      return UNRECOVERABLE_REPAIR;
                  default:
                      throw new IllegalArgumentException("Unrecognized AccordUpdate.Kind value " + val);
              }
          }
      }
  
      public static Kind kind(@Nullable Update update)
      {
          if (update == null)
              return Kind.NONE;
          return ((AccordUpdate)update).kind();
      }
  
      public void failCondition()
      {
  
      }
  
      public boolean checkCondition(Data data)
      {
          throw new UnsupportedOperationException();
      }
  
      public abstract ConsistencyLevel cassandraCommitCL();
  
      public abstract Kind kind();
  
      public abstract long estimatedSizeOnHeap();
  
      public interface AccordUpdateSerializer<T extends AccordUpdate> extends TxnSerializer<T>
      {
      }
  
      private static AccordUpdateSerializer serializerFor(AccordUpdate toSerialize)
      {
          return serializerFor(toSerialize.kind());
      }
  
      private static AccordUpdateSerializer serializerFor(Kind kind)
      {
          switch (kind)
          {
              case TXN:
                  return TxnUpdate.serializer;
              case UNRECOVERABLE_REPAIR:
                  return UnrecoverableRepairUpdate.serializer;
              default:
                  throw new IllegalStateException("Unsupported AccordUpdate Kind " + kind);
          }
      }
  
      public static final AccordUpdateSerializer<AccordUpdate> serializer = new AccordUpdateSerializer<>()
      {
          @Override
          public void serialize(AccordUpdate update, TableMetadatasAndKeys tablesAndKeys, DataOutputPlus out, Version version) throws IOException
          {
              out.writeByte(update.kind().val);
              serializerFor(update).serialize(update, tablesAndKeys, out, version);
          }
  
          @Override
          public AccordUpdate deserialize(TableMetadatasAndKeys tablesAndKeys, DataInputPlus in, Version version) throws IOException
          {
              Kind kind = Kind.valueOf(in.readByte());
              return (AccordUpdate) serializerFor(kind).deserialize(tablesAndKeys, in, version);
          }
  
          @Override
          public void skip(TableMetadatasAndKeys tablesAndKeys, DataInputPlus in, Version version) throws IOException
          {
              Kind kind = Kind.valueOf(in.readByte());
              serializerFor(kind).skip(tablesAndKeys, in, version);
          }
  
          @Override
          public long serializedSize(AccordUpdate update, TableMetadatasAndKeys tablesAndKeys, Version version)
          {
              return 1 + serializerFor(update).serializedSize(update, tablesAndKeys, version);
          }
      };
  }