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Versions: 10
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Contents
module Warden
module GitHub
# A hash subclass that acts as a cache for organization and team
# membership states. Only membership states that are true are cached. These
# are invalidated after a certain time.
class MembershipCache < ::Hash
CACHE_TIMEOUT = 60 * 5
# Fetches a membership status by type and id (e.g. 'org', 'my_company')
# from cache. If no cached value is present or if the cached value
# expired, the block will be invoked and the return value, if true,
# cached for e certain time.
def fetch_membership(type, id)
type = type.to_s
id = id.to_s if id.is_a?(Symbol)
if cached_membership_valid?(type, id)
true
elsif block_given? && yield
cache_membership(type, id)
true
else
false
end
end
private
def cached_membership_valid?(type, id)
timestamp = fetch(type).fetch(id)
if Time.now.to_i > timestamp + CACHE_TIMEOUT
fetch(type).delete(id)
false
else
true
end
rescue IndexError
false
end
def cache_membership(type, id)
hash = self[type] ||= {}
hash[id] = Time.now.to_i
end
end
end
end
Version data entries
10 entries across 10 versions & 1 rubygems