Re: Aspect logging in Guice?

Wed, 10 Oct 2012 23:46:07 -0700

You can write your own matche and use it instead of passing Matchers.any().
Or if it is ok for you to annotate the methods which you want to intercept you can use the existing Matchers.annotatedWith(...)



On 10/10/2012 05:37 AM, Rob Withers wrote:

The first one you point to is a “Built-in Binding”.  However, I do not see this in the guice-3.0.jar.  Also, how do I use it?

 

The second link on Custom Injections scans for a Logger in each class, so this does not seem to be using AOP.

 

Here is the class I came up with, below.  My problem is that I don’t see how to install the pointcut to intercept a specific method in a class.  I can bind it to all methods, but not one method.  How can I do that?

 

public class WhisperModule extends AbstractMurmurModule {

 

       @Override

       protected void configure() {

              …

 

bindInterceptor(Matchers.subclassesOf(WhisperTerminal.class), Matchers.any(), new LoggingInterceptor());

       }

}

 

public class LoggingInterceptor implements MethodInterceptor {

    private Logger logger;

 

    public LoggingInterceptor() {

       PropertyConfigurator.configure("log4j.properties");

       logger = Logger.getLogger(LoggingInterceptor.class);

    }

 

    public Object invoke(MethodInvocation methodInvocation) throws Throwable {

       String header = methodInvocation.getThis().getClass()

                     + ":" + methodInvocation.getMethod().getName();

        logger.info(header + " invocation");

        Object result = null;

        try {

            result = methodInvocation.proceed();

            logger.info(header + " return: " + result);

            return result;

        } catch (Exception ex) {

            logger.error(header, ex);

              throw ex;

        }

    }

}

 

 

Thanks,

Rob

 

From: [email protected] [mailto:[email protected]] On Behalf Of Cédric Beust ?
Sent: Tuesday, October 09, 2012 10:56 PM
To: [email protected]
Subject: Re: Aspect logging in Guice?

 

Something like that?

 

Or you could inject your own loggers with type listeners.


-- 

Cédric



On Tue, Oct 9, 2012 at 5:31 PM, Rob Withers <[email protected]> wrote:

Before I run off and implement a LoggingInterceptor, is there an AOP logging facility in core guice or an extension I could use?

 

Thanks,
Rob

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