LocalAppender.java

public class LocalAppender extends AppenderBase<ILoggingEvent> {
	private List<ILoggingEvent> events = new ArrayList<>();

	public LocalAppender() {
		start();
	}

	public static LocalAppender initialize(String... loggers) {
		LocalAppender localAppender = new LocalAppender();
		for (String loggerName : loggers) {
			localAppender.setContext((LoggerContext) LoggerFactory.getILoggerFactory());
			Logger logger = (Logger) LoggerFactory.getLogger(loggerName);
			logger.addAppender(localAppender);
		}
		return localAppender;
	}
	
	public void cleanup() {
		this.stop();
		this.clearEvents();
	}

	@Override
	public void append(ILoggingEvent e) {
		events.add(e);
	}

	public List<ILoggingEvent> getEvents() {
		return events;
	}

	public void clearEvents() {
		events.clear();
	}
}