You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
58 lines
1.3 KiB
58 lines
1.3 KiB
# frozen_string_literal: true
|
|
|
|
module RateLimitHeaders
|
|
extend ActiveSupport::Concern
|
|
|
|
included do
|
|
before_action :set_rate_limit_headers, if: :rate_limited_request?
|
|
end
|
|
|
|
private
|
|
|
|
def set_rate_limit_headers
|
|
apply_header_limit
|
|
apply_header_remaining
|
|
apply_header_reset
|
|
end
|
|
|
|
def rate_limited_request?
|
|
!request.env['rack.attack.throttle_data'].nil?
|
|
end
|
|
|
|
def apply_header_limit
|
|
response.headers['X-RateLimit-Limit'] = rate_limit_limit
|
|
end
|
|
|
|
def rate_limit_limit
|
|
api_throttle_data[:limit].to_s
|
|
end
|
|
|
|
def apply_header_remaining
|
|
response.headers['X-RateLimit-Remaining'] = rate_limit_remaining
|
|
end
|
|
|
|
def rate_limit_remaining
|
|
(api_throttle_data[:limit] - api_throttle_data[:count]).to_s
|
|
end
|
|
|
|
def apply_header_reset
|
|
response.headers['X-RateLimit-Reset'] = rate_limit_reset
|
|
end
|
|
|
|
def rate_limit_reset
|
|
(request_time + reset_period_offset).iso8601(6)
|
|
end
|
|
|
|
def api_throttle_data
|
|
most_limited_type, = request.env['rack.attack.throttle_data'].min_by { |_, v| v[:limit] }
|
|
request.env['rack.attack.throttle_data'][most_limited_type]
|
|
end
|
|
|
|
def request_time
|
|
@_request_time ||= Time.now.utc
|
|
end
|
|
|
|
def reset_period_offset
|
|
api_throttle_data[:period] - request_time.to_i % api_throttle_data[:period]
|
|
end
|
|
end
|