Module: Trebuchet::Strategy

Defined in:
lib/trebuchet/strategy.rb,
lib/trebuchet/strategy/stub.rb

Defined Under Namespace

Modules: Experimentable, PerDenominationable, Percentable, PercentableDeprecated Classes: Base, Custom, CustomRequestAware, Default, Everyone, Experiment, Hostname, Invalid, LogicAnd, LogicBase, LogicNot, LogicOr, Multiple, Nobody, PerDenomination, Percent, PercentDeprecated, Stub, UserId, VisitorExperiment, VisitorPercent, VisitorPercentDeprecated

Class Method Summary collapse

Class Method Details

.class_for_name(name) ⇒ Object 



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# File 'lib/trebuchet/strategy.rb', line 70

def self.class_for_name(name)
  classes = Hash[name_class_map]
  classes[name]
end

.deprecated_strategy_names ⇒ Object 



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# File 'lib/trebuchet/strategy.rb', line 63

def self.deprecated_strategy_names
  [
    :percent_deprecated,
    :visitor_percent_deprecated
  ]
end

.find(*args) ⇒ Object 



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# File 'lib/trebuchet/strategy.rb', line 15

def self.find(*args)
  strategy_name, options = args

  if args.size > 2
    Multiple.new(args)
  elsif strategy_name.nil? || strategy_name == :default
    # Strategy hasn't been defined yet
    Default.instance
  elsif strategy_name == :everyone
    Everyone.instance
  elsif strategy_name == :nobody
    Nobody.instance
  elsif CustomRequestAware.exists?(strategy_name)
    CustomRequestAware.new(strategy_name, options)
  elsif Custom.exists?(strategy_name)
    Custom.new(strategy_name, options)
  elsif klass = class_for_name(strategy_name)
    # percent, users
    klass.new(options)
  else
    Invalid.new(strategy_name, options)
  end
end

.for_feature(feature) ⇒ Object 



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# File 'lib/trebuchet/strategy.rb', line 5

def self.for_feature(feature)
  stub_state = Trebuchet::Feature.stubbed_features[feature.name]
  if stub_state
    Stub.new(stub_state)
  else
    strategy_args = Trebuchet.backend.get_strategy(feature.name)
    find(*strategy_args).tap {|s| s.feature = feature }
  end
end

.name_class_map ⇒ Object

The stub strategy purposely left out of this list as it should be accessible via the testing interface only and not externally.



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# File 'lib/trebuchet/strategy.rb', line 41

def self.name_class_map
  [
    [:visitor_percent_deprecated, VisitorPercentDeprecated],
    [:percent_deprecated, PercentDeprecated],
    [:percent, Percent],
    [:per_denomination, PerDenomination],
    [:users, UserId],
    [:default, Default],
    [:everyone, Everyone],
    [:nobody, Nobody],
    [:custom, Custom],
    [:multiple, Multiple],
    [:experiment, Experiment],
    [:visitor_percent, VisitorPercent],
    [:hostname, Hostname],
    [:visitor_experiment, VisitorExperiment],
    [:logic_and, LogicAnd],
    [:logic_or, LogicOr],
    [:logic_not, LogicNot],
  ]
end

.name_for_class(klass) ⇒ Object 



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# File 'lib/trebuchet/strategy.rb', line 75

def self.name_for_class(klass)
  names = Hash[name_class_map.map(&:reverse)]
  names[klass]
end