JavaMelody Grails Plugin

grails install-plugin grails-melody

Or download from the upper-right Download button link to your local file system, such as D:/plugins, and run

grails install-plugin "D:/plugins/grails-grails-melody-<version>.zip"

The plugin will copy a GrailsMelodyConfig.groovy to your grails-app/conf directory. Basically you don't have to change this file to run grails melody plugin.

Link to Release notes of JavaMelody (and of JavaMelody Grails Plugin)

There is a known issue about some particular service parameter definition, see here and here

The goal of JavaMelody is to monitor Java or Java EE applications servers in QA and production environments. It is not a tool to simulate requests from users, it is a tool to measure and calculate statistics on real operation of an application depending on the usage of the application by users.

A few things you might want to know:

• grails-melody plugin overwrite original grails 'dataSource' bean in spring context with a JavaMelody datasource proxy.
• grails-melody plugin use groovy meta programming to intercept grails services method calls.

javamelody.disabled = true

JavaMelody uses URIs to resolve HTTP requests. This means that

/book/show/1 and 
/book/show/23

will resolve as different requests. While that's desirable in some cases, often you want the statistics to be gathered for the show action, irrespective of parameters. In that case, add the following configuration to GrailsMelodyConfig.groovy and the above URIs will show up as /book/show/$.

javamelody.'http-transform-pattern' = '\\d+'  //filter out numbers from URI

Similar issue comes up for SQL monitoring - use a similar Regex to filter it.

javamelody.'sql-transform-pattern' = '\\d+'

http://code.google.com/p/javamelody/wiki/Screenshots