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.exceptions;
  
  import java.util.HashMap;
  import java.util.Map;
  
  import org.apache.cassandra.transport.ProtocolException;
  import org.apache.cassandra.utils.Shared;
  
  import static org.apache.cassandra.utils.Shared.Scope.SIMULATION;
  
  /**
   * Exceptions code, as defined by the binary protocol.
   */
  @Shared(scope = SIMULATION)
  public enum ExceptionCode
  {
      SERVER_ERROR    (0x0000),
      PROTOCOL_ERROR  (0x000A),
  
      BAD_CREDENTIALS (0x0100),
  
      // 1xx: problem during request execution
      UNAVAILABLE         (0x1000),
      OVERLOADED          (0x1001),
      IS_BOOTSTRAPPING    (0x1002),
      TRUNCATE_ERROR      (0x1003),
      WRITE_TIMEOUT       (0x1100),
      READ_TIMEOUT        (0x1200),
      READ_FAILURE        (0x1300),
      FUNCTION_FAILURE    (0x1400),
      WRITE_FAILURE       (0x1500),
      CDC_WRITE_FAILURE   (0x1600),
      CAS_WRITE_UNKNOWN   (0x1700),
  
      // 2xx: problem validating the request
      SYNTAX_ERROR    (0x2000),
      UNAUTHORIZED    (0x2100),
      INVALID         (0x2200),
      CONFIG_ERROR    (0x2300),
      ALREADY_EXISTS  (0x2400),
      UNPREPARED      (0x2500);
  
      public final int value;
      private static final Map<Integer, ExceptionCode> valueToCode = new HashMap<>(ExceptionCode.values().length);
      static
      {
          for (ExceptionCode code : ExceptionCode.values())
              valueToCode.put(code.value, code);
      }
  
      ExceptionCode(int value)
      {
          this.value = value;
      }
  
      public static ExceptionCode fromValue(int value)
      {
          ExceptionCode code = valueToCode.get(value);
          if (code == null)
              throw new ProtocolException(String.format("Unknown error code %d", value));
          return code;
      }
  }
  