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 com.alibaba.compileflow.engine.core.infrastructure;
  
  import com.alibaba.compileflow.engine.common.CompileFlowException;
  import com.alibaba.compileflow.engine.common.ErrorCode;
  
  import java.util.concurrent.RejectedExecutionException;
  import java.util.concurrent.TimeoutException;
  
  /**
   * Exception classifier for CompileFlow framework.
   *
   * @author yusu
   */
  public class ExceptionClassifier {
  
      /**
       * Converts any exception to CompileFlowException.
       */
      public static CompileFlowException classify(Exception exception) {
          if (exception instanceof CompileFlowException) {
              return (CompileFlowException) exception;
          }
  
          return classifyByType(exception);
      }
  
      private static CompileFlowException classifyByType(Exception exception) {
          String message = exception.getMessage();
  
          if (exception instanceof TimeoutException) {
              return new CompileFlowException.SystemException(
                      ErrorCode.CF_EXEC_004,
                      "Operation timeout: " + message,
                      exception
              );
          }
  
          if (exception instanceof RejectedExecutionException) {
              return new CompileFlowException.SystemException(
                      ErrorCode.CF_EXEC_005,
                      "Thread pool rejected execution: " + message,
                      exception
              );
          }
  
          if (exception instanceof InterruptedException) {
              return new CompileFlowException.SystemException(
                      ErrorCode.CF_EXEC_007,
                      "Operation interrupted: " + message,
                      exception
              );
          }
  
          // Fallback: unexpected error
          return new CompileFlowException.SystemException(
                  ErrorCode.CF_EXEC_001,
                  "Unexpected error: " + message,
                  exception
          );
      }
  
  }
  