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 org.apache.cassandra.db.ConsistencyLevel;
  
  public class UnavailableException extends RequestExecutionException
  {
      public final ConsistencyLevel consistency;
      public final int required;
      public final int alive;
  
      public static UnavailableException create(ConsistencyLevel consistency, int required, int alive)
      {
          assert alive < required;
          return create(consistency, required, 0, alive, 0);
      }
  
      public static UnavailableException create(ConsistencyLevel consistency, int required, int requiredFull, int alive, int aliveFull)
      {
          if (required > alive)
              return new UnavailableException(String.format("Cannot achieve consistency level %s. Required %s but only %s alive.", consistency, required, alive),
                                              consistency, required, alive);
          assert requiredFull < aliveFull;
          return new UnavailableException("Insufficient full replicas", consistency, required, alive);
      }
  
      public static UnavailableException create(ConsistencyLevel consistency, String dc, int required, int requiredFull, int alive, int aliveFull)
      {
          if (required > alive)
              return new UnavailableException("Cannot achieve consistency level " + consistency + " in DC " + dc, consistency, required, alive);
          assert requiredFull < aliveFull;
          return new UnavailableException("Insufficient full replicas in DC " + dc, consistency, required, alive);
      }
  
      public UnavailableException(String msg, ConsistencyLevel consistency, int required, int alive)
      {
          super(ExceptionCode.UNAVAILABLE, msg);
          this.consistency = consistency;
          this.required = required;
          this.alive = alive;
      }
  }
  