content: /*
   * Tencent is pleased to support the open source community by making Angel available.
   *
   * Copyright (C) 2017-2018 THL A29 Limited, a Tencent company. All rights reserved.
   *
   * 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
   *
   * https://opensource.org/licenses/Apache-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.tencent.angel.exception;
  
  import org.xml.sax.Attributes;
  
  import java.io.IOException;
  import java.lang.reflect.Constructor;
  
  public class RemoteException extends IOException {
    private static final long serialVersionUID = 1L;
    private String className;
  
    public RemoteException(String className, String msg) {
      super(msg);
      this.className = className;
    }
  
    public String getClassName() {
      return this.className;
    }
  
    public IOException unwrapRemoteException(Class<?>[] lookupTypes) {
      if (lookupTypes == null)
        return this;
      for (Class lookupClass : lookupTypes) {
        if (!lookupClass.getName().equals(getClassName()))
          continue;
        try {
          return instantiateException(lookupClass.asSubclass(IOException.class));
        } catch (Exception e) {
          return this;
        }
      }
  
      return this;
    }
  
    public IOException unwrapRemoteException() {
      try {
        Class realClass = Class.forName(getClassName());
        return instantiateException(realClass.asSubclass(IOException.class));
      } catch (Exception e) {
      }
      return this;
    }
  
    private IOException instantiateException(Class<? extends IOException> cls) throws Exception {
      Constructor cn = cls.getConstructor(new Class[] {String.class});
      cn.setAccessible(true);
      String firstLine = getMessage();
      int eol = firstLine.indexOf(10);
      if (eol >= 0) {
        firstLine = firstLine.substring(0, eol);
      }
      IOException ex = (IOException) cn.newInstance(new Object[] {firstLine});
      ex.initCause(this);
      return ex;
    }
  
    public static RemoteException valueOf(Attributes attrs) {
      return new RemoteException(attrs.getValue("class"), attrs.getValue("message"));
    }
  }