internetee-registry/app/lib/shunter.rb

# frozen_string_literal: true

module Shunter
  module_function

  class ThrottleError < StandardError; end

  BASE_LOGGER = ::Logger.new($stdout)
  ONE_MINUTE = 60
  ONE_HUNDRED_REQUESTS = 100

  BASE_CONNECTION = {
    host: ENV['shunter_redis_host'] || 'redis',
    port: (ENV['shunter_redis_port'] || '6379').to_i,
  }.freeze

  def default_error_message
    "Session limit exceeded. Current limit is #{default_threshold} in #{default_timespan} seconds"
  end

  def default_timespan
    ENV['shunter_default_timespan'] || ONE_MINUTE
  end

  def default_threshold
    ENV['shunter_default_threshold'] || ONE_HUNDRED_REQUESTS
  end

  def default_adapter
    ENV['shunter_default_adapter'] || 'Shunter::Adapters::Redis'
  end

  def feature_enabled?
    ActiveModel::Type::Boolean.new.cast(ENV['shunter_enabled'] || 'false')
  end
end