Class: Coach::MiddlewareValidator

Inherits:
Object
  • Object
show all
Defined in:
lib/coach/middleware_validator.rb

Instance Method Summary collapse

Constructor Details

#initialize(middleware, previous_middlewares = [], already_provided = []) ⇒ MiddlewareValidator

Returns a new instance of MiddlewareValidator.



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# File 'lib/coach/middleware_validator.rb', line 7

def initialize(middleware, previous_middlewares = [], already_provided = [])
  @middleware = middleware
  @previous_middlewares = previous_middlewares.clone
  @already_provided = already_provided
end

Instance Method Details

#validated_provides! ⇒ Object

Aggregates provided keys from the given middleware, and all the middleware it uses. Can raise at any level assuming a used middleware is missing a required dependency.



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# File 'lib/coach/middleware_validator.rb', line 15

def validated_provides!
  if missing_requirements.any?
    raise Coach::Errors::MiddlewareDependencyNotMet.new(
      @middleware, @previous_middlewares, missing_requirements
    )
  end

  @middleware.provided + provided_by_chain
end