Class: FeatureHub::Sdk::FeatureHubRepository

Inherits:
InternalFeatureRepository show all
Defined in:
lib/feature_hub/sdk/feature_repository.rb

Overview

the core implementation of a feature repository

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(apply_features = nil, logger = nil) ⇒ FeatureHubRepository

Returns a new instance of FeatureHubRepository.



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# File 'lib/feature_hub/sdk/feature_repository.rb', line 11

def initialize(apply_features = nil, logger = nil)
  super()
  @strategy_matcher = apply_features || FeatureHub::Sdk::Impl::ApplyFeature.new
  @interceptors = []
  @raw_listeners = []
  @features = {}
  @ready = false
  @logger = logger
end

Instance Attribute Details

#features ⇒ Object (readonly)

Returns the value of attribute features.



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# File 'lib/feature_hub/sdk/feature_repository.rb', line 9

def features
  @features
end

Instance Method Details

#apply(strategies, key, feature_id, context) ⇒ Object 



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# File 'lib/feature_hub/sdk/feature_repository.rb', line 21

def apply(strategies, key, feature_id, context)
  @strategy_matcher.apply(strategies, key, feature_id, context)
end

#close ⇒ Object 



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# File 'lib/feature_hub/sdk/feature_repository.rb', line 87

def close
  @interceptors.each(&:close)
  @raw_listeners.each(&:close)
end

#extract_feature_state ⇒ Object 



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# File 'lib/feature_hub/sdk/feature_repository.rb', line 100

def extract_feature_state
  @features.values
           .filter(&:exists?)
           .map(&:feature_state)
end

#feature(key, attrs = nil) ⇒ Object 



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# File 'lib/feature_hub/sdk/feature_repository.rb', line 59

def feature(key, attrs = nil)
  holder = @features[key.to_sym] || make_feature_holder(key.to_sym)
  return holder unless attrs

  ClientContext.new(self, attrs).feature(key)
end

#find_interceptor(feature_key, feature_state = nil) ⇒ Object 



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# File 'lib/feature_hub/sdk/feature_repository.rb', line 79

def find_interceptor(feature_key, feature_state = nil)
  @interceptors.each do |interceptor|
    matched, value = interceptor.intercepted_value(feature_key, self, feature_state)
    return [true, value] if matched
  end
  [false, nil]
end

#not_ready! ⇒ Object 



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# File 'lib/feature_hub/sdk/feature_repository.rb', line 96

def not_ready!
  @ready = false
end

#notify(status, data, source = "unknown") ⇒ Object 



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# File 'lib/feature_hub/sdk/feature_repository.rb', line 25

def notify(status, data, source = "unknown")
  return unless status

  if status.to_sym == :failed
    @ready = false
    return
  end

  return if data.nil?

  case status.to_sym
  when :features
    update_features(data)
    @logger&.debug("[featurehubsdk] became ready through updates from #{source}") unless @ready
    @ready = true
    notify_raw_listeners_async { |l| l.process_updates(data, source) }
    @logger&.debug("[featurehubsdk] full updates from #{source} are #{data}")
  when :feature
    return if data.nil? || data["key"].nil?

    update_feature(data)
    @logger&.debug("[featurehubsdk] became ready through updates from #{source}") unless @ready
    @ready = true
    notify_raw_listeners_async { |l| l.process_update(data, source) }
    @logger&.debug("[featurehubsdk] single feature update from #{source} are #{data}")
  when :delete_feature
    return unless data && data["key"]

    delete_feature(data)
    notify_raw_listeners_async { |l| l.delete_feature(data, source) }
    @logger&.debug("[featurehubsdk] delete from #{source} are #{data}")
  end
end

#ready? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/feature_hub/sdk/feature_repository.rb', line 92

def ready?
  @ready
end

#register_interceptor(interceptor) ⇒ Object 



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# File 'lib/feature_hub/sdk/feature_repository.rb', line 71

def register_interceptor(interceptor)
  @interceptors.push(interceptor)
end

#register_raw_update_listener(listener) ⇒ Object 



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# File 'lib/feature_hub/sdk/feature_repository.rb', line 75

def register_raw_update_listener(listener)
  @raw_listeners.push(listener)
end

#value(key, default_value = nil, attrs = nil) ⇒ Object 



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# File 'lib/feature_hub/sdk/feature_repository.rb', line 66

def value(key, default_value = nil, attrs = nil)
  f = feature(key, attrs)
  f.present? ? f.value : default_value
end