Class: Unleash::FeatureToggle

Inherits:
Object
  • Object
show all
Defined in:
lib/unleash/feature_toggle.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(params = {}) ⇒ FeatureToggle

Returns a new instance of FeatureToggle.



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# File 'lib/unleash/feature_toggle.rb', line 7

def initialize(params={})
  self.name = params['name'] || nil
  self.enabled = params['enabled'] || false

  self.strategies = params['strategies']
    .select{|s| ( s.key?('name') && Unleash::STRATEGIES.key?(s['name'].to_sym) ) }
    .map{|s| ActivationStrategy.new(s['name'], s['parameters'])} || []

  # Unleash.logger.debug "FeatureToggle params: #{params}"
  # Unleash.logger.debug "strategies: #{self.strategies}"
end

Instance Attribute Details

#choices ⇒ Object

Returns the value of attribute choices.



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# File 'lib/unleash/feature_toggle.rb', line 5

def choices
  @choices
end

#choices_lock ⇒ Object

Returns the value of attribute choices_lock.



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# File 'lib/unleash/feature_toggle.rb', line 5

def choices_lock
  @choices_lock
end

#enabled ⇒ Object

Returns the value of attribute enabled.



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# File 'lib/unleash/feature_toggle.rb', line 5

def enabled
  @enabled
end

#name ⇒ Object

Returns the value of attribute name.



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# File 'lib/unleash/feature_toggle.rb', line 5

def name
  @name
end

#strategies ⇒ Object

Returns the value of attribute strategies.



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# File 'lib/unleash/feature_toggle.rb', line 5

def strategies
  @strategies
end

Instance Method Details

#is_enabled?(context, default_result) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/unleash/feature_toggle.rb', line 23

def is_enabled?(context, default_result)
  if not ['NilClass', 'Unleash::Context'].include? context.class.name
    Unleash.logger.error "Provided context is not of the correct type #{context.class.name}, please use Unleash::Context"
    context = nil
  end

  result = self.enabled && self.strategies.select{ |s|
    strategy = Unleash::STRATEGIES.fetch(s.name.to_sym, :unknown)
    r = strategy.is_enabled?(s.params, context)
    Unleash.logger.debug "Strategy #{s.name} returned #{r} with context: #{context}" #"for params #{s.params} "
    r
  }.any?
  result ||= default_result

  Unleash.logger.debug "FeatureToggle (enabled:#{self.enabled} default_result:#{default_result} and Strategies combined returned #{result})"

  choice = result ? :yes : :no
  Unleash.toggle_metrics.increment(name, choice) unless Unleash.configuration.disable_metrics

  return result
end

#to_s ⇒ Object 



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# File 'lib/unleash/feature_toggle.rb', line 19

def to_s
  "<FeatureToggle: name=#{self.name},enabled=#{self.enabled},choices=#{self.choices},strategies=#{self.strategies}>"
end