Sha256: 7d6057086b17ce86d476d448fd3e676e413fa8eedd5c8747335687c0faa67a6a
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Size: 806 Bytes
Versions: 20
Compression:
Stored size: 806 Bytes
Contents
# frozen_string_literal: true
# Watches for changes over time. It only re-examines the values when it is requested to update readings.
# @api private
class Puppet::Util::Watcher::ChangeWatcher
def self.watch(reader)
Puppet::Util::Watcher::ChangeWatcher.new(nil, nil, reader).next_reading
end
def initialize(previous, current, value_reader)
@previous = previous
@current = current
@value_reader = value_reader
end
def changed?
if uncertain?
false
else
@previous != @current
end
end
def uncertain?
@previous.nil? || @current.nil?
end
def change_current_reading_to(new_value)
Puppet::Util::Watcher::ChangeWatcher.new(@current, new_value, @value_reader)
end
def next_reading
change_current_reading_to(@value_reader.call)
end
end
Version data entries
20 entries across 20 versions & 1 rubygems