Grails Aspectj Load Time Weaving with embedded Tomcat and Webphere

[Rushi Desai]

Hi,

I am trying to get Load Time Weaving using Spring for my grails project.

Details of my environment are as follows.

grails version : 2.4.2
Server :  1. Embedded Tomcat for local development
             2. WebSphere 8.0.4 for higher environments.

I have attached the SampleAspect.groovy that I am using to weave specific aspect.

From what I understand to enable LoadTimeWeaving for Spring this is all we need to do :

<context:spring-configured />
<context:load-time-weaver aspectj-weaving="autodetect"/>

So I have place this in my applicationContext.xml in my grails project.

I set this argument while running run-app


-javaagent:path/to/spring-instrument.jar

If i just do this much as mentioned above I get this. 


Caused by IllegalStateException: ClassLoader [org.grails.plugins.tomcat.ParentDelegatingClassLoader] does NOT provide an 'addTransformer(ClassFileTransformer)' method. Specify a custom LoadTimeWeaver or start your Java virtual machine with Spring's agent: -javaagent:org.springframework.instrument.jar


So From this :

http://docs.spring.io/spring/docs/4.0.x/spring-framework-reference/html/aop.html#aop-aj-ltw-environment-generic

I need to put this in 'server.xml' of my tomcat :

<Context path="/myWebApp" docBase="/my/webApp/location">
    <Loader
        loaderClass="org.springframework.instrument.classloading.tomcat.TomcatInstrumentableClassLoader"/>
</Context>

Problem :


In grails I cannot have access to my server.xml (According to Graeme Rocher : http://grails.1312388.n4.nabble.com/Where-do-I-look-for-server-xml-with-embedded-Tomcat-td1461189.html)

So given this how do I put the above configuration ?

Any help would be appreciated !!

Thanks.

[Christian Knoblauch]

Rushi,

There's a blog post linked from the mailing list you sent where it describes how to set up a a WebappLoader with a specific classloader. Maybe it will do what you want.

    Christian

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