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Contents
module Deltacloud::Validation
class Failure < StandardError
attr_reader :param
def initialize(param, msg='')
super(msg)
@param = param
end
def name
param.name
end
end
class Param
attr_reader :name, :klass, :type, :options, :description
def initialize(args)
@name = args[0]
@klass = args[1] || :string
@type = args[2] || :optional
@options = args[3] || []
@description = args[4] || ''
end
def required?
type.eql?(:required)
end
def optional?
type.eql?(:optional)
end
end
def param(*args)
raise DuplicateParamException if params[args[0]]
p = Param.new(args)
params[p.name] = p
end
def params
@params ||= {}
@params
end
# Add the parameters in hash +new+ to already existing parameters. If
# +new+ contains a parameter with an already existing name, the old
# definition is clobbered.
def add_params(new)
# We do not check for duplication on purpose: multiple calls
# to add_params should be cumulative
new.each { |p| @params[p.name] = p }
end
def each_param(&block)
params.each_value { |p| yield p }
end
def validate(values)
each_param do |p|
if p.required? and not values[p.name]
raise Failure.new(p, "Required parameter #{p.name} not found")
end
if values[p.name] and not p.options.empty? and
not p.options.include?(values[p.name])
raise Failure.new(p, "Parameter #{p.name} has value #{values[p.name]} which is not in #{p.options.join(", ")}")
end
end
end
end
Version data entries
27 entries across 27 versions & 3 rubygems