Class: Flipper::Middleware::Memoizer

Inherits:
Object
  • Object
show all
Defined in:
lib/flipper/middleware/memoizer.rb

Instance Method Summary collapse

Constructor Details

#initialize(app, flipper_or_block) ⇒ Memoizer

Public: Initializes an instance of the UI middleware.

app - The app this middleware is included in. flipper_or_block - The Flipper::DSL instance or a block that yields a

Flipper::DSL instance to use for all operations.

Examples

flipper = Flipper.new(...)

# using with a normal flipper instance
use Flipper::Middleware::Memoizer, flipper

# using with a block that yields a flipper instance
use Flipper::Middleware::Memoizer, lambda { Flipper.new(...) }



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# File 'lib/flipper/middleware/memoizer.rb', line 22

def initialize(app, flipper_or_block)
  @app = app

  if flipper_or_block.respond_to?(:call)
    @flipper_block = flipper_or_block
  else
    @flipper = flipper_or_block
  end
end

Instance Method Details

#call(env) ⇒ Object 



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# File 'lib/flipper/middleware/memoizer.rb', line 36

def call(env)
  original = flipper.adapter.memoizing?
  flipper.adapter.memoize = true

  response = @app.call(env)
  response[2] = Rack::BodyProxy.new(response[2]) {
    flipper.adapter.memoize = original
  }
  response
end

#flipper ⇒ Object 



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# File 'lib/flipper/middleware/memoizer.rb', line 32

def flipper
  @flipper ||= @flipper_block.call
end