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annotate src/luan/modules/logging/Log4j.java @ 1336:7483108154bb

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minor logging
author Franklin Schmidt <fschmidt@gmail.com>
date Thu, 14 Feb 2019 05:22:22 -0700
parents e0cf0d108a77
children 6617763dfd76
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1 package luan.modules.logging;
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2
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3 import java.util.Enumeration;
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4 import org.apache.log4j.Logger;
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5 import org.apache.log4j.LogManager;
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6 import org.apache.log4j.Hierarchy;
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7 import org.apache.log4j.Level;
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8 import org.apache.log4j.Appender;
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9 import org.apache.log4j.spi.LoggerRepository;
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10 import org.apache.log4j.spi.RootLogger;
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11 import org.apache.log4j.spi.RepositorySelector;
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12 import luan.Luan;
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13 import luan.LuanException;
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14 import luan.LuanTable;
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16
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17 public final class Log4j {
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18 private static final String KEY = "Logger.Repository";
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19 private static final LoggerRepository defaultLoggerRepository = LogManager.getLoggerRepository();
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20
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21 public static void newLoggerRepository(Luan luan) {
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22 Logger oldLogger = defaultLoggerRepository.getRootLogger();
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23 Logger newLogger = new RootLogger(Level.DEBUG);
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24 LoggerRepository lr = new Hierarchy(newLogger);
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25 for( Enumeration en = oldLogger.getAllAppenders(); en.hasMoreElements(); ) {
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26 Appender appender = (Appender)en.nextElement();
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27 newLogger.addAppender(appender);
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28 }
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29 luan.registry().put(KEY,lr);
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30 }
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31
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32 private static LoggerRepository getLoggerRepository(Luan luan) {
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33 LoggerRepository lr = (LoggerRepository)luan.registry().get(KEY);
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34 return lr != null ? lr : defaultLoggerRepository;
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35 }
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37 static {
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38 LogManager.setRepositorySelector( new RepositorySelector() {
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39 public LoggerRepository getLoggerRepository() {
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40 Luan luan = LuanLogger.luan();
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41 return luan==null ? defaultLoggerRepository : Log4j.getLoggerRepository(luan);
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42 }
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43 }, new Object() );
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44 }
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45
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46 public static Logger getRootLogger(Luan luan) {
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47 return getLoggerRepository(luan).getRootLogger();
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48 }
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49
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50 public static Logger getLogger(Luan luan,String name) {
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51 return getLoggerRepository(luan).getLogger(name);
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52 }
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53 }