Class: Hephaestus::Middleware::OpenapiValidation

Inherits:
Object
  • Object
show all
Defined in:
lib/hephaestus/middleware/openapi_validation.rb

Constant Summary collapse

API_PATH_PREFIX = 
"/api/"
API_SPEC_PATH = 
Rails.root.join("lib/schemas/api/2023-03-06/openapi.json")

Instance Method Summary collapse

Constructor Details

#initialize(app, ignore_path: "/settings", match_path: API_PATH_PREFIX, limit_methods_to: nil, spec: API_SPEC_PATH) ⇒ OpenapiValidation

Returns a new instance of OpenapiValidation.



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# File 'lib/hephaestus/middleware/openapi_validation.rb', line 12

def initialize(app, ignore_path: "/settings", match_path: API_PATH_PREFIX, limit_methods_to: nil, spec: API_SPEC_PATH)
  @app = app
  @ignore_path = ignore_path
  @match_path = match_path
  @limit_methods_to = limit_methods_to
  @spec = OpenapiFirst.load(spec)
end

Instance Method Details

#call(env) ⇒ Object 



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# File 'lib/hephaestus/middleware/openapi_validation.rb', line 20

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

  return @app.call(env) if request.path.include?(@ignore_path)
  return @app.call(env) unless request.path.starts_with?(@match_path)

  return @app.call(env) if @limit_methods_to.present? && @limit_methods_to.exclude?(request.request_method)

  begin
    # force content-type to JSON
    env["CONTENT_TYPE"] = "application/json" if env["CONTENT_TYPE"] != "application/json"

    validated_request = @spec.validate_request(request)

    return @app.call(env) if validated_request.valid?

    case validated_request.error
    when OpenapiFirst::Schema::ValidationError
      error_arr = format_arr(validated_request.error.errors.map(&:message))
      Rails.logger.error(error_arr) if print_user_api_errors?
      [Hephaestus::HTTP::BAD_REQUEST_I, { "Content-Type" => "application/json" }, [error_arr]]
    else
      case validated_request.error.type
      when :not_found
        [Hephaestus::HTTP::NOT_FOUND_I, { "Content-Type" => "application/json" }, [format_str("Not Found")]]
      else
        error_message = if validated_request.error.errors.present?
          format_arr(validated_request.error.errors.map(&:message))
        else
          format_str(validated_request.error.message)
        end

        Rails.logger.error(error_message) if print_user_api_errors?
        [Hephaestus::HTTP::BAD_REQUEST_I, { "Content-Type" => "application/json" }, [error_message]]
      end
    end
  rescue StandardError => e
    raise e unless Rails.env.production?

    Rails.logger.error(
      "openapi.request_validation.error",
      path: request.path,
      method: request.env["REQUEST_METHOD"],
      error_message: e.message,
    )
  end
end