Class: LaunchDarkly::StreamProcessor

Inherits:
Object
  • Object
show all
Defined in:
lib/ldclient-rb/stream.rb

Instance Method Summary collapse

Constructor Details

#initialize(api_key, config) ⇒ StreamProcessor

Returns a new instance of StreamProcessor.



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# File 'lib/ldclient-rb/stream.rb', line 68

def initialize(api_key, config)
  @api_key = api_key
  @config = config
  @store = config.feature_store ? config.feature_store : InMemoryFeatureStore.new
  @disconnected = Concurrent::AtomicReference.new(nil)
  @started = Concurrent::AtomicBoolean.new(false)
end

Instance Method Details

#get_feature(key) ⇒ Object 



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# File 'lib/ldclient-rb/stream.rb', line 84

def get_feature(key)
  if not initialized?
    throw :uninitialized
  end
  @store.get(key)
end

#initialized? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/ldclient-rb/stream.rb', line 76

def initialized?()
  @store.initialized?
end

#should_fallback_update ⇒ Object 



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# File 'lib/ldclient-rb/stream.rb', line 156

def should_fallback_update()
  disc = @disconnected.get
  disc != nil and disc < (Time.now - 120)
end

#start ⇒ Object 



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# File 'lib/ldclient-rb/stream.rb', line 104

def start()
  # Try to start the reactor. If it's not started, we shouldn't start
  # the stream processor
  if not start_reactor
    return
  end

  # If someone else booted the stream processor connection, just return
  if not @started.make_true
    return
  end

  # If we're the first and only thread to set started, boot
  # the stream processor connection
  EM.defer do
    source = EM::EventSource.new(@config.stream_uri + "/features",
                                {},
                                {'Accept' => 'text/event-stream',
                                 'Authorization' => 'api_key ' + @api_key,
                                 'User-Agent' => 'RubyClient/' + LaunchDarkly::VERSION})
    source.on PUT do |message|
      features = JSON.parse(message, :symbolize_names => true)
      @store.init(features)
      set_connected            
    end
    source.on PATCH do |message|
      json = JSON.parse(message, :symbolize_names => true)
      @store.upsert(json[:path][1..-1], json[:data])
      set_connected
    end
    source.on DELETE do |message|
      json = JSON.parse(message, :symbolize_names => true)
      @store.delete(json[:path][1..-1], json[:version])
      set_connected
    end
    source.error do |error|
      @config.logger.error("[LDClient] Error subscribing to stream API: #{error}")
      set_disconnected
    end
    source.inactivity_timeout = 0
    source.start
  end
end

#started? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/ldclient-rb/stream.rb', line 80

def started?()
  @started.value
end