TestAppender xref

    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
    18  package org.apache.commons.logging.log4j.log4j12;
    19
    20
    21  import java.util.List;
    22
    23  import org.apache.commons.logging.log4j.StandardTests;
    24  import org.apache.log4j.AppenderSkeleton;
    25  import org.apache.log4j.spi.LoggingEvent;
    26
    27  /**
    28   * A custom implementation of <code>org.apache.log4j.Appender</code> which
    29   * converts the log4j-specific log event record into a representation that
    30   * doesn't have a dependency on log4j and stores that new representation into
    31   * an external list.
    32   */
    33
    34  public class TestAppender extends AppenderSkeleton {
    35
    36      /**
    37       * Constructor.
    38       */
    39      public TestAppender(List logEvents) {
    40          events = logEvents;
    41      }
    42
    43      // ----------------------------------------------------- Instance Variables
    44
    45
    46      // The set of logged events for this appender
    47      private List events;
    48
    49
    50      // ------------------------------------------------------- Appender Methods
    51
    52      protected void append(LoggingEvent event) {
    53          StandardTests.LogEvent lev = new StandardTests.LogEvent();
    54
    55          lev.level = event.getLevel().toString();
    56
    57          if (event.getMessage() == null)
    58              lev.msg = null;
    59          else
    60              lev.msg = event.getMessage().toString();
    61
    62          if (event.getThrowableInformation() == null)
    63              lev.throwable = null;
    64          else
    65              lev.throwable = event.getThrowableInformation().getThrowable();
    66
    67          events.add(lev);
    68      }
    69
    70
    71      public void close() {
    72      }
    73
    74
    75      public boolean requiresLayout() {
    76          return (false);
    77      }
    78
    79
    80  }