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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one or more
3    * contributor license agreements. See the NOTICE file distributed with
4    * this work for additional information regarding copyright ownership.
5    * The ASF licenses this file to You under the Apache license, Version 2.0
6    * (the "License"); you may not use this file except in compliance with
7    * the License. You may obtain a copy of the License at
8    *
9    *      http://www.apache.org/licenses/LICENSE-2.0
10   *
11   * Unless required by applicable law or agreed to in writing, software
12   * distributed under the License is distributed on an "AS IS" BASIS,
13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   * See the license for the specific language governing permissions and
15   * limitations under the license.
16   */
17  package org.apache.log4j.bridge;
18  
19  import org.apache.log4j.spi.ErrorHandler;
20  import org.apache.logging.log4j.core.LogEvent;
21  
22  /**
23   * Makes a Log4j 1 ErrorHandler usable by a Log4j 2 Appender.
24   */
25  public class ErrorHandlerAdapter implements org.apache.logging.log4j.core.ErrorHandler {
26  
27      private final ErrorHandler errorHandler;
28  
29      public ErrorHandlerAdapter(ErrorHandler errorHandler) {
30          this.errorHandler = errorHandler;
31      }
32  
33      public ErrorHandler getHandler() {
34          return errorHandler;
35      }
36  
37      @Override
38      public void error(String msg) {
39          errorHandler.error(msg);
40      }
41  
42      @Override
43      public void error(String msg, Throwable t) {
44          if (t instanceof Exception) {
45              errorHandler.error(msg, (Exception) t, 0);
46          } else {
47              errorHandler.error(msg);
48          }
49      }
50  
51      @Override
52      public void error(String msg, LogEvent event, Throwable t) {
53          if (t == null || t instanceof Exception) {
54              errorHandler.error(msg, (Exception) t, 0, new LogEventAdapter(event));
55          } else {
56              errorHandler.error(msg);
57          }
58      }
59  }