content: /*
   * Copyright (C) 2013 Facebook, Inc.
   *
   * Licensed 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 io.airlift.drift.client;
  
  import com.google.common.collect.ImmutableList;
  
  import java.util.List;
  
  import static io.airlift.drift.client.ExceptionClassification.NORMAL_EXCEPTION;
  import static io.airlift.drift.client.ExceptionClassification.mergeExceptionClassifications;
  import static java.util.Objects.requireNonNull;
  
  public interface ExceptionClassifier
  {
      ExceptionClassifier NORMAL_RESULT = throwable -> NORMAL_EXCEPTION;
  
      static ExceptionClassifier mergeExceptionClassifiers(Iterable<? extends ExceptionClassifier> classifiers)
      {
          List<ExceptionClassifier> exceptionClassifiers = ImmutableList.copyOf(requireNonNull(classifiers, "classifiers is null"));
          return throwable -> exceptionClassifiers.stream()
                  .map(classifier -> classifier.classifyException(throwable))
                  .collect(mergeExceptionClassifications());
      }
  
      ExceptionClassification classifyException(Throwable throwable);
  }
  