On Feb 25, 2011, at 1:20 PM, Brice Figureau wrote:
>> [...]
>> I think this basic model is sound, and is roughly what I'd do.
>>
>> You could also have a builtin system to allow classes to specify
>> which methods should normally be probed. E.g., create a module that
>> essentially does this:
>>
>> module Probable
>> PROBABLE_CLASSES = []
>>
>> class Probe
>> def initialize(method, klass, type)
>> ...
>> end
>> def enable
>> ...do the alias method switcheroo here
>> end
>> end
>> def define_probe(name, type = :time)
>> @probes << probe.new(name, self.class, type)
>> PROBABLE_CLASSES << self.class
>> end
>>
>> def self.enable_probes
>> PROBABLE_CLASSES.each do |klass|
>> klass.probes.each { |probe| probe.enable }
>> end
>> end
>> end
>
> OK, I see.
> I was planning to insert some of the probe manually (one of the best
> target is the indirection various verbs) and allow any other to be
> dynamically set, but your scheme seems better.
Supporting both would be great, but I expect there are a lot of obvious probe
points that should ship with the software.
>> Obviously not really a great design per se, but as a general idea, it
>> would allow any class to define what were most likely to be the
>> appropriate probes, so that turning probes on for the system should
>> result in the best data. I like the idea of being able to manually
>> enable probes through your command-line interface ideas, too, but I
>> think the system should ship with a bunch of these out of the box.
>
> The system currently designed is dual-fold: on one side you can enable
> probes, and on the other side there are probe listeners (which are
> loadable plugins). Those listeners can also be enabled on-demand and can
> be targeted to some 'events' (events are fired by the probes when they
> are reached).
> I hope to have the time to finish the patch this week-end :)
I look forward to it.
--
If a `religion' is defined to be a system of ideas that contains
unprovable statements, then Godel taught us that mathematics is not
only a religion, it is the only religion that can prove itself to be
one. -- John Barrow
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Luke Kanies -|- http://puppetlabs.com -|- +1(615)594-8199
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