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Versions: 13
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Contents
module Shamu
module Security
# A rule capturing the permitted actions and resources for {Policy}
# permissions.
class PolicyRule
# ============================================================================
# @!group Attributes
#
# @!attribute
# @return [Object] the value to return as the result of a {Policy#permit?}
# call if the rule matches the request.
attr_reader :result
#
# @!endgroup Attributes
def initialize( actions, resource, result, block )
@actions = actions
@resource = resource
@result = result
@block = block
end
# Determines if the rule matches the request action permission on the
# given resource.
#
# @param [Symbol] action to be performed.
# @param [Object] resource the action will be performed on.
# @param [Object] additional context offered to {Policy#permit?}.
#
# @return [Boolean] true if the rule is a match.
def match?( action, resource, additional_context )
return false unless actions.include? action
return false unless resource_match?( resource )
if block && !resource.is_a?( Module )
block.call( resource, additional_context )
else
true
end
end
private
attr_reader :actions
attr_reader :resource
attr_reader :block
def resource_match?( candidate )
return true if resource == candidate
return true if resource.is_a?( Module ) && candidate.is_a?( resource )
end
end
end
end
Version data entries
13 entries across 13 versions & 1 rubygems