Debug messages in NGINX Clojure framework

[vikrant singh]

Hello,

I am invoking a java handler using nginx-clojure framework.  TO debug some of the issue I want to instrument the binary with some debug logs. I was wondering how I can enable the same. 

Following is what I have tried till now...

Have following in config file...

jvm_options "-Dnginx.clojure.logger.level=debug";

And writing logs like this in my  code...

  if (NginxClojureRT.log.isDebugEnabled()) {$

      NginxClojureRT.log.debug("vikrant testing = %s", uri);$

   }$

But is not really writing anything in code. I suspect that Iam not looking at the right place, or I do not have the correct configuration in place.

Can you please adivse how I should proceed in this case?

Thanks,

Vikrant

[Yuexiang Zhang]

Hi,

We can use any logging framework with nginx-clojure, e.g. slf4j + logback,  please check here http://nginx-clojure.github.io/more.html#37--about-logging .

If we only want to debug with it. Please try this way :

(1) enable jvm debug

worker_processes  1;

http { 

    ...........

    jvm_options "-Xdebug";

    jvm_options "-Xrunjdwp:server=y,transport=dt_socket,address=8401,suspend=n";

}

(2)  Debug with your IDE e.g. Eclipse

http://help.eclipse.org/luna/index.jsp?topic=%2Forg.eclipse.jdt.doc.user%2Fconcepts%2Fcremdbug.htm

Now we can set break point and watch all variables in the stack context.

Regards.

Xfeep

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[Yuexiang Zhang]

And debug with IntelliJ IDEA is just like this link 

http://www.javaranch.com/journal/200408/DebuggingServer-sideCode.html

.

[vikrant singh]

thank you very much for your reply... I will start working on these guidlines.

Regards,

Vikrant

[xfeep]

Hi,

Since v0.4.1 we can use a embedding nginx-clojure to debug our nginx handler quite easily.

viz. Start our nginx handler in a stardard clojure/java/groovy application.

More details can be found here http://nginx-clojure.github.io/embed.html .

Regards.

xfeep