Sample Logging Aspect

logging_aspect_example.java

@Aspect
public class LoggingAspect {

	private ILoggerFactory iLoggerFactory = LoggerFactory.getILoggerFactory();

	@Before("execution(@com.morgan.design.demo.annotation.LogMe(com.morgan.design.demo.annotation.LoggingLevel.WARN) * *(..))")
	public void loggerWarn(final JoinPoint jp) throws Throwable {
		final Logger logger = getLoggerForClass(jp);
		logger.warn(buildLogging(jp));
	}

	private Logger getLoggerForClass(final JoinPoint jp) {
		return this.iLoggerFactory.getLogger(jp.getSignature()
			.getDeclaringType()
			.getName());
	}

	private String buildLogging(final JoinPoint jp) {
		final StringBuilder message = new StringBuilder();
		message.append("Method Invocation=[")
			.append(jp.getSignature()
				.getName())
			.append("]")
			.append(" - Args=")
			.append(Arrays.toString(jp.getArgs()));
		return message.toString();
	}
}