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.Map;
  import java.util.stream.Collectors;
  
  import org.apache.cassandra.db.ConsistencyLevel;
  import org.apache.cassandra.locator.InetAddressAndPort;
  
  public class RequestFailureException extends RequestExecutionException
  {
      public final ConsistencyLevel consistency;
      public final int received;
      public final int blockFor;
      public final Map<InetAddressAndPort, RequestFailureReason> failureReasonByEndpoint;
  
      protected RequestFailureException(ExceptionCode code, ConsistencyLevel consistency, int received, int blockFor, Map<InetAddressAndPort, RequestFailureReason> failureReasonByEndpoint)
      {
          this(code, buildErrorMessage(received, failureReasonByEndpoint), consistency, received, blockFor, failureReasonByEndpoint);
      }
  
      public RequestFailureException(ExceptionCode code, String msg, ConsistencyLevel consistency, int received, int blockFor, Map<InetAddressAndPort, RequestFailureReason> failureReasonByEndpoint)
      {
          super(code, buildErrorMessage(msg, failureReasonByEndpoint));
          this.consistency = consistency;
          this.received = received;
          this.blockFor = blockFor;
          this.failureReasonByEndpoint = failureReasonByEndpoint;
      }
  
      public RequestFailureException(ExceptionCode code, String msg, ConsistencyLevel consistency, int received, int blockFor, Map<InetAddressAndPort, RequestFailureReason> failureReasonByEndpoint, Throwable cause)
      {
          super(code, buildErrorMessage(msg, failureReasonByEndpoint), cause);
          this.consistency = consistency;
          this.received = received;
          this.blockFor = blockFor;
          this.failureReasonByEndpoint = failureReasonByEndpoint;
      }
  
      private static String buildErrorMessage(int received, Map<InetAddressAndPort, RequestFailureReason> failures)
      {
          return String.format("received %d responses and %d failures", received, failures.size());
      }
  
      private static String buildFailureString(Map<InetAddressAndPort, RequestFailureReason> failures)
      {
          return failures.entrySet().stream()
                         .map(e -> String.format("%s from %s", e.getValue(), e.getKey()))
                         .collect(Collectors.joining(", "));
      }
  
      private static String buildErrorMessage(CharSequence msg, Map<InetAddressAndPort, RequestFailureReason> failures)
      {
          StringBuilder sb = new StringBuilder("Operation failed - ");
          sb.append(msg);
          if (failures != null && !failures.isEmpty())
              sb.append(": ").append(buildFailureString(failures));
          return sb.toString();
      }
  }
  