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require 'unleash/strategy/util'
module Unleash
module Strategy
class FlexibleRollout < Base
def name
'flexibleRollout'
end
# need: params['percentage']
def is_enabled?(params = {}, context = nil)
return false unless params.is_a?(Hash)
return false unless context.class.name == 'Unleash::Context'
stickiness = params.fetch('stickiness', 'default')
stickiness_id = resolve_stickiness(stickiness, context)
begin
percentage = Integer(params.fetch('rollout', 0))
percentage = 0 if percentage > 100 || percentage.negative?
rescue ArgumentError
return false
end
group_id = params.fetch('groupId', '')
normalized_number = Util.get_normalized_number(stickiness_id, group_id)
return false if stickiness_id.nil?
(percentage.positive? && normalized_number <= percentage)
end
private
def random
Random.rand(0..100)
end
def resolve_stickiness(stickiness, context)
case stickiness
when 'userId'
context.user_id
when 'sessionId'
context.session_id
when 'random'
random
when 'default'
context.user_id || context.session_id || random
else
nil
end
end
end
end
end
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