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module Puppet::DataProviders::DataFunctionSupport
def initialize_data(data_key, lookup_invocation)
name = "#{data_key}::data"
scope = lookup_invocation.scope
Puppet::Util::Profiler.profile("Called #{name}", [ :functions, name ]) do
loader = loader(data_key, scope)
if loader && func = loader.load(:function, name)
# function found, call without arguments, must return a Hash
# TODO: Validate the function - to ensure it does not contain unwanted side effects
# That can only be done if the function is a puppet function
#
result = func.call(scope)
unless result.is_a?(Hash)
raise Puppet::Error.new("Expected '#{name}' function to return a Hash, got #{result.class}")
end
# validate result if block given
result = yield(result) if block_given?
else
raise Puppet::Error.new("Cannot find the function '#{name}' - required when using 'function' data provider scheme")
end
result
end
end
end
Version data entries
63 entries across 63 versions & 2 rubygems