Appender parseAppender(Properties props, String appenderName) { Appender appender = registryGet(appenderName); if ((appender != null)) { LogLog.debug("Appender \"" + appenderName + "\" was already parsed."); return appender; } // Appender was not previously initialized. String prefix = APPENDER_PREFIX + appenderName; String layoutPrefix = prefix + ".layout"; appender = (Appender) OptionConverter.instantiateByKey(props, prefix, org.apache.log4j.Appender.class, null); if (appender == null) { LogLog.error("Could not instantiate appender named \"" + appenderName + "\"."); return null; } appender.setName(appenderName); if (appender instanceof OptionHandler) { if (appender.requiresLayout()) { Layout layout = (Layout) OptionConverter.instantiateByKey(props, layoutPrefix, Layout.class, null); if (layout != null) { appender.setLayout(layout); LogLog.debug("Parsing layout options for \"" + appenderName + "\"."); // configureOptionHandler(layout, layoutPrefix + ".", props); PropertySetter.setProperties(layout, props, layoutPrefix + "."); LogLog.debug("End of parsing for \"" + appenderName + "\"."); } } final String errorHandlerPrefix = prefix + ".errorhandler"; String errorHandlerClass = OptionConverter.findAndSubst(errorHandlerPrefix, props); if (errorHandlerClass != null) { ErrorHandler eh = (ErrorHandler) OptionConverter.instantiateByKey( props, errorHandlerPrefix, ErrorHandler.class, null); if (eh != null) { appender.setErrorHandler(eh); LogLog.debug("Parsing errorhandler options for \"" + appenderName + "\"."); parseErrorHandler(eh, errorHandlerPrefix, props, repository); final Properties edited = new Properties(); final String[] keys = new String[] { errorHandlerPrefix + "." + ROOT_REF, errorHandlerPrefix + "." + LOGGER_REF, errorHandlerPrefix + "." + APPENDER_REF_TAG }; for (Iterator iter = props.entrySet().iterator(); iter.hasNext(); ) { Map.Entry entry = (Map.Entry) iter.next(); int i = 0; for (; i < keys.length; i++) { if (keys[i].equals(entry.getKey())) break; } if (i == keys.length) { edited.put(entry.getKey(), entry.getValue()); } } PropertySetter.setProperties(eh, edited, errorHandlerPrefix + "."); LogLog.debug("End of errorhandler parsing for \"" + appenderName + "\"."); } } // configureOptionHandler((OptionHandler) appender, prefix + ".", props); PropertySetter.setProperties(appender, props, prefix + "."); LogLog.debug("Parsed \"" + appenderName + "\" options."); } parseAppenderFilters(props, appenderName, appender); registryPut(appender); return appender; }