001/*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 * 
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 * 
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.apache.log4j.lf5.util;
018
019import org.apache.log4j.lf5.LogLevel;
020import org.apache.log4j.lf5.LogRecord;
021
022import java.io.PrintWriter;
023import java.io.StringWriter;
024
025/**
026 * <p>A LogRecord to be used with the LogMonitorAdapter</p>
027 *
028 * @author Richard Hurst
029 */
030
031// Contributed by ThoughtWorks Inc.
032
033public class AdapterLogRecord extends LogRecord {
034  //--------------------------------------------------------------------------
035  //   Constants:
036  //--------------------------------------------------------------------------
037
038  //--------------------------------------------------------------------------
039  //   Protected Variables:
040  //--------------------------------------------------------------------------
041
042  //--------------------------------------------------------------------------
043  //   Private Variables:
044  //--------------------------------------------------------------------------
045  private static LogLevel severeLevel = null;
046
047  private static StringWriter sw = new StringWriter();
048  private static PrintWriter pw = new PrintWriter(sw);
049
050  //--------------------------------------------------------------------------
051  //   Constructors:
052  //--------------------------------------------------------------------------
053  public AdapterLogRecord() {
054    super();
055  }
056
057  //--------------------------------------------------------------------------
058  //   Public Methods:
059  //--------------------------------------------------------------------------
060  public void setCategory(String category) {
061    super.setCategory(category);
062    super.setLocation(getLocationInfo(category));
063  }
064
065  public boolean isSevereLevel() {
066    if (severeLevel == null) return false;
067    return severeLevel.equals(getLevel());
068  }
069
070  public static void setSevereLevel(LogLevel level) {
071    severeLevel = level;
072  }
073
074  public static LogLevel getSevereLevel() {
075    return severeLevel;
076  }
077
078  //--------------------------------------------------------------------------
079  //   Protected Methods:
080  //--------------------------------------------------------------------------
081  protected String getLocationInfo(String category) {
082    String stackTrace = stackTraceToString(new Throwable());
083    String line = parseLine(stackTrace, category);
084    return line;
085  }
086
087  protected String stackTraceToString(Throwable t) {
088    String s = null;
089
090    synchronized (sw) {
091      t.printStackTrace(pw);
092      s = sw.toString();
093      sw.getBuffer().setLength(0);
094    }
095
096    return s;
097  }
098
099  protected String parseLine(String trace, String category) {
100    int index = trace.indexOf(category);
101    if (index == -1) return null;
102    trace = trace.substring(index);
103    trace = trace.substring(0, trace.indexOf(")") + 1);
104    return trace;
105  }
106  //--------------------------------------------------------------------------
107  //   Private Methods:
108  //--------------------------------------------------------------------------
109
110  //--------------------------------------------------------------------------
111  //   Nested Top-Level Classes or Interfaces
112  //--------------------------------------------------------------------------
113}
114