LoggerHandler.java

package com.talentora.commons;

import org.apache.logging.log4j.Level;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.core.Filter;
import org.apache.logging.log4j.core.Logger;
import org.apache.logging.log4j.core.LoggerContext;
import org.apache.logging.log4j.core.appender.RollingFileAppender;
import org.apache.logging.log4j.core.appender.rolling.DefaultRolloverStrategy;
import org.apache.logging.log4j.core.appender.rolling.RollingFileManager;
import org.apache.logging.log4j.core.appender.rolling.SizeBasedTriggeringPolicy;
import org.apache.logging.log4j.core.config.Configuration;
import org.apache.logging.log4j.core.layout.PatternLayout;

public enum LoggerHandler {
	INSTANCE;
	private RollingFileAppender fileAppender = null;
	private Level level = Level.DEBUG;

	public RollingFileAppender getFileAppender() {
		return fileAppender;
	}

	public void setFileAppender(RollingFileAppender fileAppender) {
		this.fileAppender = fileAppender;
	}

	public Level getLevel() {
		return level;
	}

	public void setLevel(Level level) {
		this.level = level;
	}

	public Logger getNewLogger(Class<?> c) {
		Logger logger = (org.apache.logging.log4j.core.Logger) LogManager.getLogger(c);

		if (fileAppender != null) {
			logger.addAppender(this.fileAppender);
		}
		logger.setAdditive(false);
		return logger;
	}

	public Logger getNewLoggerWithAppend(String name) {
		Logger logger = (Logger) LogManager.getLogger(name);
		logger.addAppender(this.fileAppender);
		logger.setLevel(this.level);
		logger.setAdditive(false);
		return logger;
	}

	public Logger getNewLogger(String name) {
		Logger logger = (Logger) LogManager.getLogger(name);
		if (fileAppender != null) {
			logger.addAppender(this.fileAppender);
		}
		logger.setLevel(this.level);
		logger.setAdditive(false);
		return logger;
	}

	public RollingFileAppender getFileAppender(String name, String fileName, String maxSize, String logLayoutPattern,
			int maxfilesToKeep, boolean compress) {
		final LoggerContext ctx = (LoggerContext) LogManager.getContext(false);
		final Configuration config = ctx.getConfiguration();
		String filePattern = fileName + ".%i";
		if (compress == true)
			filePattern += ".gz";

		PatternLayout layout = PatternLayout.newBuilder().withConfiguration(config).withPattern(logLayoutPattern)
				.build();
		SizeBasedTriggeringPolicy policy = SizeBasedTriggeringPolicy.createPolicy(maxSize);
		DefaultRolloverStrategy strategy = DefaultRolloverStrategy.createStrategy(maxfilesToKeep + "", "1", "min", null,
				config);

		RollingFileManager fileManager = RollingFileManager.getFileManager(fileName, filePattern, true, true, policy,
				strategy, null, layout, 1024);
		policy.initialize(fileManager);
		RollingFileAppender appender = RollingFileAppender.createAppender(fileName, filePattern, "true", name, "true",
				"1024", "true", policy, strategy, layout, (Filter) null, "false", "false", (String) null, config);
		appender.start();
		return appender;
	}
}