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# subscriptions are permanent associations determining how different
# objects react to an event
# This is Puppet's class for modeling edges in its configuration graph.
# It used to be a subclass of GRATR::Edge, but that class has weird hash
# overrides that dramatically slow down the graphing.
class Puppet::Relationship
# FormatSupport for serialization methods
include Puppet::Network::FormatSupport
include Puppet::Util::PsychSupport
attr_accessor :source, :target, :callback
attr_reader :event
def self.from_data_hash(data)
source = data['source']
target = data['target']
args = {}
args[:event] = :"#{data['event']}" if data["event"]
args[:callback] = :"#{data['callback']}" if data["callback"]
new(source, target, args)
end
def event=(event)
#TRANSLATORS 'NONE' should not be translated
raise ArgumentError, _("You must pass a callback for non-NONE events") if event != :NONE and ! callback
@event = event
end
def initialize(source, target, options = {})
@source, @target = source, target
options = (options || {}).inject({}) { |h,a| h[a[0].to_sym] = a[1]; h }
[:callback, :event].each do |option|
value = options[option]
send(option.to_s + "=", value) if value
end
end
# Does the passed event match our event? This is where the meaning
# of :NONE comes from.
def match?(event)
if self.event.nil? or event == :NONE or self.event == :NONE
return false
elsif self.event == :ALL_EVENTS or event == self.event
return true
else
return false
end
end
def label
result = {}
result[:callback] = callback if callback
result[:event] = event if event
result
end
def ref
"#{source} => #{target}"
end
def inspect
"{ #{source} => #{target} }"
end
def to_data_hash
data = {
'source' => source.to_s,
'target' => target.to_s
}
data['event'] = event.to_s unless event.nil?
data['callback'] = callback.to_s unless callback.nil?
data
end
def to_s
ref
end
end
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