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# frozen_string_literal: true
module Gitlab
class Throttle
DEFAULT_RATE_LIMITING_RESPONSE_TEXT = 'Retry later'
# Each of these settings follows the same pattern of specifying separate
# authenticated and unauthenticated rates via settings. New throttles should
# ideally be regular as well.
REGULAR_THROTTLES = [:api, :packages_api, :files_api].freeze
def self.settings
Gitlab::CurrentSettings.current_application_settings
end
# Returns true if we should use the Admin Area protected paths throttle
def self.protected_paths_enabled?
self.settings.throttle_protected_paths_enabled?
end
def self.omnibus_protected_paths_present?
Rack::Attack.throttles.key?('protected paths')
end
def self.bypass_header
env_value = ENV['GITLAB_THROTTLE_BYPASS_HEADER']
return unless env_value.present?
"HTTP_#{env_value.upcase.tr('-', '_')}"
end
class << self
def options(throttle, authenticated:)
fragment = throttle_fragment!(throttle, authenticated: authenticated)
# rubocop:disable GitlabSecurity/PublicSend
limit_proc = proc { |req| settings.public_send("#{fragment}_requests_per_period") }
period_proc = proc { |req| settings.public_send("#{fragment}_period_in_seconds").seconds }
# rubocop:enable GitlabSecurity/PublicSend
{ limit: limit_proc, period: period_proc }
end
def throttle_fragment!(throttle, authenticated:)
raise("Unknown throttle: #{throttle}") unless REGULAR_THROTTLES.include?(throttle)
"throttle_#{'un' unless authenticated}authenticated_#{throttle}"
end
end
def self.unauthenticated_web_options
# TODO: Columns will be renamed in https://gitlab.com/gitlab-org/gitlab/-/issues/340031
# Once this is done, web can be made into a regular throttle
limit_proc = proc { |req| settings.throttle_unauthenticated_requests_per_period }
period_proc = proc { |req| settings.throttle_unauthenticated_period_in_seconds.seconds }
{ limit: limit_proc, period: period_proc }
end
def self.authenticated_web_options
limit_proc = proc { |req| settings.throttle_authenticated_web_requests_per_period }
period_proc = proc { |req| settings.throttle_authenticated_web_period_in_seconds.seconds }
{ limit: limit_proc, period: period_proc }
end
def self.protected_paths_options
limit_proc = proc { |req| settings.throttle_protected_paths_requests_per_period }
period_proc = proc { |req| settings.throttle_protected_paths_period_in_seconds.seconds }
{ limit: limit_proc, period: period_proc }
end
def self.throttle_authenticated_git_lfs_options
limit_proc = proc { |req| settings.throttle_authenticated_git_lfs_requests_per_period }
period_proc = proc { |req| settings.throttle_authenticated_git_lfs_period_in_seconds.seconds }
{ limit: limit_proc, period: period_proc }
end
def self.rate_limiting_response_text
(settings.rate_limiting_response_text.presence || DEFAULT_RATE_LIMITING_RESPONSE_TEXT) + "\n"
end
end
end
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