Hi,
I'm trying to implement some kind of "finally" behavior in a process
definition.
My workflow needs to prepare an environment by suspending various resources
and eventually resuming them.
I've written the actual code (participants) that suspend and resume the
resources, and a small working workflow but I felt it's a bit loosely
described.
The workflow is roughly described like this:
define do
resource1 :action => 'suspend'
resource2 :action => 'suspend'
do_some_stuff
resource2 :action => 'resume'
resource1 :action => 'resume'
end
Resources 1 and 2 are not coupled or dependent on each other, but the
resume/suspend operations are.
I feel this is a bit loose because some action inside do_some_stuff might
cause the workflow to skip resuming, plus they are too far apart :)
I re-arranged it with `apply` like so:
define do
define 'prepare_resource1' do
resource1 :action => 'suspend'
apply
resource1 :action => 'resume'
end
define 'prepare_resource2' do
resource2 :action => 'suspend'
apply
resource2 :action => 'resume'
end
prepare_resource1 do
prepare_resource2 do
do_some_stuff
end
end
end
I like it better, but it still feels a bit off to me, not sure why. Maybe
too much nesting or something.
I might be way off, and the first workflow is the way to go. :)
Help is much appreciated, thanks.
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