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Contents
require "sfn"
module Sfn
module Lint
# Lint defition
class Definition
# @return [String] search expression used for matching
attr_reader :search_expression
# @return [Proc-ish] must respond to #call
attr_reader :evaluator
# @return [Symbol] target provider
attr_reader :provider
# Create a new definition
#
# @param expr [String] search expression used for matching
# @param provider [String, Symbol] target provider
# @param evaluator [Proc] logic used to handle match
# @return [self]
def initialize(expr, provider = :aws, evaluator = nil, &block)
if evaluator && block
raise ArgumentError.new "Only evaluator or block can be provided, not both."
end
@provider = Bogo::Utility.snake(provider).to_sym
@search_expression = expr
@evaluator = evaluator || block
end
# Apply definition to template
#
# @param template [Hash] template being processed
# @return [TrueClass, Array<String>] true if passed. List of string results that failed
def apply(template)
result = JMESPath.search(search_expression, template)
run(result, template)
end
protected
# Check result of search expression
#
# @param result [Object] result(s) of search expression
# @param template [Hash] full template
# @return [TrueClass, Array<String>] true if passed. List of string results that failed
# @note override this method when subclassing
def run(result, template)
unless evaluator
raise NotImplementedError.new "No evaluator has been defined for this definition!"
end
evaluator.call(result, template)
end
end
end
end
Version data entries
6 entries across 6 versions & 1 rubygems