001package ch.qos.logback.classic.model.processor;
002
003import static ch.qos.logback.core.joran.JoranConstants.NULL;
004
005import ch.qos.logback.classic.Level;
006import ch.qos.logback.classic.Logger;
007import ch.qos.logback.classic.LoggerContext;
008import ch.qos.logback.classic.model.LoggerModel;
009import ch.qos.logback.core.Context;
010import ch.qos.logback.core.joran.JoranConstants;
011import ch.qos.logback.core.model.Model;
012import ch.qos.logback.core.model.processor.ModelHandlerBase;
013import ch.qos.logback.core.model.processor.ModelHandlerException;
014import ch.qos.logback.core.model.processor.ModelInterpretationContext;
015import ch.qos.logback.core.spi.ErrorCodes;
016import ch.qos.logback.core.util.OptionHelper;
017
018public class LoggerModelHandler extends ModelHandlerBase {
019
020    Logger logger;
021    boolean inError = false;
022
023    public LoggerModelHandler(Context context) {
024        super(context);
025    }
026
027    static public ModelHandlerBase makeInstance(Context context, ModelInterpretationContext mic) {
028        return new LoggerModelHandler(context);
029    }
030
031    protected Class<LoggerModel> getSupportedModelClass() {
032        return LoggerModel.class;
033    }
034
035    @Override
036    public void handle(ModelInterpretationContext mic, Model model) throws ModelHandlerException {
037        inError = false;
038
039        LoggerModel loggerModel = (LoggerModel) model;
040
041        String finalLoggerName = mic.subst(loggerModel.getName());
042
043        LoggerContext loggerContext = (LoggerContext) this.context;
044
045        logger = loggerContext.getLogger(finalLoggerName);
046
047        String levelStr = mic.subst(loggerModel.getLevel());
048        if (!OptionHelper.isNullOrEmptyOrAllSpaces(levelStr)) {
049            if (JoranConstants.INHERITED.equalsIgnoreCase(levelStr) || NULL.equalsIgnoreCase(levelStr)) {
050                if(Logger.ROOT_LOGGER_NAME.equalsIgnoreCase(finalLoggerName)) {
051                    addError(ErrorCodes.ROOT_LEVEL_CANNOT_BE_SET_TO_NULL);
052                } else {
053                    addInfo("Setting level of logger [" + finalLoggerName + "] to null, i.e. INHERITED");
054                    logger.setLevel(null);
055                }
056            } else {
057                Level level = Level.toLevel(levelStr);
058                addInfo("Setting level of logger [" + finalLoggerName + "] to " + level);
059                logger.setLevel(level);
060            }
061        }
062
063        String additivityStr = mic.subst(loggerModel.getAdditivity());
064        if (!OptionHelper.isNullOrEmptyOrAllSpaces(additivityStr)) {
065            boolean additive = OptionHelper.toBoolean(additivityStr, true);
066            addInfo("Setting additivity of logger [" + finalLoggerName + "] to " + additive);
067            logger.setAdditive(additive);
068        }
069
070        mic.pushObject(logger);
071    }
072
073    @Override
074    public void postHandle(ModelInterpretationContext mic, Model model) {
075        if (inError) {
076            return;
077        }
078        Object o = mic.peekObject();
079        if (o != logger) {
080            LoggerModel loggerModel = (LoggerModel) model;
081            addWarn("The object [" + o + "] on the top the of the stack is not the expected logger named "
082                    + loggerModel.getName());
083        } else {
084            mic.popObject();
085        }
086
087    }
088
089}