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Versions: 24
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Contents
module CfnDsl
# Handles all external parameters
class ExternalParameters
extend Forwardable
def_delegators :parameters, :fetch, :keys, :values, :each_pair
attr_reader :parameters
class << self
def defaults(params = {})
@defaults ||= {}
@defaults.merge! params
@defaults
end
def current
@current || refresh!
end
def refresh!
@current = new
end
end
def initialize
@parameters = self.class.defaults.clone
end
def set_param(k, v)
parameters[k.to_sym] = v
end
def get_param(k)
parameters[k.to_sym]
end
alias [] get_param
def to_h
parameters
end
def add_to_binding(bind, logstream)
parameters.each_pair do |key, val|
logstream.puts("Setting local variable #{key} to #{val}") if logstream
bind.eval "#{key} = #{val.inspect}"
end
end
def load_file(fname)
format = File.extname fname
case format
when /ya?ml/
params = YAML.load_file fname
when /json/
params = JSON.parse File.read(fname)
else
raise "Unrecognized extension #{format}"
end
params.each { |key, val| set_param(key, val) }
end
end
end
Version data entries
24 entries across 24 versions & 1 rubygems