Class: Flipper::Middleware::Memoizer

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

Instance Method Summary collapse

Constructor Details

#initialize(app, opts = {}) ⇒ Memoizer

Public: Initializes an instance of the Memoizer middleware. Flipper must be configured with a default instance or the flipper instance must be setup in the env of the request. You can do this by using the Flipper::Middleware::SetupEnv middleware.

app - The app this middleware is included in. opts - The Hash of options.

:preload_all - Boolean of whether or not to preload all features.
:preload - Array of Symbol feature names to preload.

Examples

use Flipper::Middleware::Memoizer

# using with preload_all features
use Flipper::Middleware::Memoizer, preload_all: true

# using with preload specific features
use Flipper::Middleware::Memoizer, preload: [:stats, :search, :some_feature]



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# File 'lib/flipper/middleware/memoizer.rb', line 26

def initialize(app, opts = {})
  if opts.is_a?(Flipper::DSL) || opts.is_a?(Proc)
    raise 'Flipper::Middleware::Memoizer no longer initializes with a flipper instance or block. Read more at: https://git.io/vSo31.' # rubocop:disable LineLength
  end

  @app = app
  @opts = opts
  @env_key = opts.fetch(:env_key, 'flipper')
end

Instance Method Details

#call(env) ⇒ Object 



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

def call(env)
  request = Rack::Request.new(env)

  if skip_memoize?(request)
    @app.call(env)
  else
    memoized_call(env)
  end
end