DontSafeLogFile.java

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.core.Logger;
import org.apache.logging.log4j.core.appender.AbstractOutputStreamAppender;
import org.apache.logging.log4j.core.appender.FileManager;
import org.apache.logging.log4j.core.appender.OutputStreamManager;
import org.apache.logging.log4j.core.appender.RollingRandomAccessFileAppender;

import java.io.File;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;

public class DontSaveLogFile {
    private DontSaveLogFile() {
    }

    private static Field managerField;

    static {
        try {
            managerField = AbstractOutputStreamAppender.class.getDeclaredField("manager");
        } catch (NoSuchFieldException e) {
            throw new RuntimeException("Unable to get manger field", e);
        }
    }

    private static Method closeMethod;

    static {
        try {
            closeMethod = OutputStreamManager.class.getDeclaredMethod("close");
        } catch (NoSuchMethodException e) {
            throw new RuntimeException("Unable to get manger field", e);
        }
    }

    public static void dontSaveLogFile() {
        Logger logger = (Logger) LogManager.getLogger("");
        File logDir = null;
        for (org.apache.logging.log4j.core.Appender appender : logger.getAppenders().values()) {
            if (appender instanceof RollingRandomAccessFileAppender) {
                managerField.setAccessible(true);
                FileManager manager;
                try {
                    manager = (FileManager) managerField.get(appender);
                    closeMethod.setAccessible(true);
                    closeMethod.invoke(manager);
                } catch (IllegalAccessException e) {
                    throw new RuntimeException("Unable to call setAccessible", e);
                } catch (InvocationTargetException e) {
                    throw new RuntimeException("RollingRandomAccessFileAppender.close() threw an exception");
                }
                File file = new File(manager.getFileName());
                if (logDir == null) {
                    logDir = file;
                    while (!logDir.getName().equals("logs")) {
                        logDir = file.getParentFile();
                    }
                }
                if (!file.delete()) throw new RuntimeException("Couldn't delete " + file);
                logger.removeAppender(appender);
            }
            if (appender instanceof org.apache.logging.log4j.core.appender.ConsoleAppender) {
                logger.removeAppender(appender);
            }
        }
        if (logDir != null && !logDir.delete()) throw new RuntimeException("Couldn't delete logs dir");
    }
}