Improve concurrent rule

[redzippo1]

Hi :

Thank you for take this project to us.

Our team want to use concurrent rule in our project. But this rule is not profect yet (eg: it only support method "execute" of ThreadPoolExecutor in ExecutorAgentRule).
So if you like, we hope to finish the work together. We'll sort out the ideas and ask for your approval before we develop them.

Is this ok?

[malafeev]

@redzippo1 PR is welcome

[redzippo1]

@malafeev

Hi :

We had some discussions today.

We want to divide AgentRule by thread pool type, but not method in each ExecutorService (eg: a class named ThreadPoolExecutorAgentRule for ThreadPoolExecutor, and a class named ScheduledThreadPoolExecutorAgentRule for ScheduledThreadPoolExecutor).

How do you feel that ?

THX

[malafeev]

@redzippo1 I'm not sure that I understand what you want to achieve. Primary goal of concurrent rule is to propagate active span into new thread. So if you have an active span and then create new thread then new thread also will have active span.

[redzippo1]

@malafeev

I am agree what you said above.

What I try to say is : we want to merge FixedDelayAgentRule, FixedRateAgentRule, ScheduledCallableAgentRule, ScheduledRunnableAgentRule functions into one class named like ScheduledThreadPoolExecutorAgentRule, and extend ExecutorAgentRule for supporting more methods of ThreadPoolExecutor.

Am I right?

[malafeev]

@redzippo1 sounds cool