How to determine the master hook?

[Victor Powell]

Is there a way to determine if a hook is a master hook? Or possibly detect if a hook was previously not master, and now is?

- Victor

[darinc]

Victor,

Without knowing the exact answer, I can steer you in the right direction.  I spun up three processes each running hook --autoheal --repl, they came online as the-hook, the-hook-1 and the-hook-2.  While in the repl, you get tab complete.  So type "hook." then hit tab and you will see a list of options.  If you run hook.proposedRank on all three you will see the hooks report 0, 1, and 2 respectively as their proposed rank.  The hook with the rank of 0 is always master hook.

The other key thing with the repl is that you can see the events that fire when you disconnect the current master.  I created the following gist with the log actions for all three hooks as I killed the master hook.  https://gist.github.com/3075827

Aside from the hook.proposedRank you can see some events that fire that would be worth listening for:  hook::rank::accepting seems to report null if you are the master, or an integer greater than 0 if you are in line.

Let the group know how you solve your question.

Thanks,

<>Darin

[Victor Powell]

Thanks for the help. Here's the solution I came up with: https://gist.github.com/3076653