Re: new feature? Re: New Feature: Console Service

On 05/06/12 21:41, Travis Bear wrote:

Phil,

What do you think of adding the ability for the console to send arbitrary shell commands to all attached agents?  I'd like to be able to invoke the successor to Grinder Analyzer when a Grinder run is completed, and do it from within the Grinder environment.  I experimented with putting some shutdown code in my grinder scripts, but it gets run before crucial information is written to the grinder logs.

Another serviceable approach would be to allow configuring a post-run script in grinder.properties, that the agent process would launch after the worker processes have terminated.

Let me know what you think.  I'll enter a feature request for either of these as needed.

I'd like to figure out how to do this within the worker process, and without relying on the console, even if we end up with a way for the console to initiate it.

I know you're after the process statistics, and currently parsing them from the logs. A Python atexit callback will be called when the interpreter shuts down, which is still too early for you.

I could add a method to net.grinder.script.Statistics which provides the script with the accumulated statistics for the process. Then you wouldn't have to parse the log. There's value in this in general, please open an ER for it if you agree.

Personally, I think it might be best to write Java code, and register it using Runtime.atShutdownHook(). This has the advantage of working for non-Jython script engines too. You would then need to add a Jar to the classpath and have your script call "analyzer.registerShutdown()", just once.

- Phil

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