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# frozen_string_literal: true
module API
module Helpers
# == RateLimiter
#
# Helper that checks if the rate limit for a given endpoint is throttled by calling the
# Gitlab::ApplicationRateLimiter class. If the action is throttled for the current user, the request
# will be logged and an error message will be rendered with a Too Many Requests response status.
# See app/controllers/concerns/check_rate_limit.rb for Rails controllers version
module RateLimiter
def check_rate_limit!(key, scope:, **options)
return if bypass_header_set?
return unless rate_limiter.throttled?(key, scope: scope, **options)
rate_limiter.log_request(request, "#{key}_request_limit".to_sym, current_user)
return yield if block_given?
render_api_error!({ error: _('This endpoint has been requested too many times. Try again later.') }, 429)
end
private
def rate_limiter
::Gitlab::ApplicationRateLimiter
end
def bypass_header_set?
::Gitlab::Throttle.bypass_header.present? && request.get_header(Gitlab::Throttle.bypass_header) == '1'
end
end
end
end
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