class MyService
  include Singleton

  def initialize
    @circuit_breaker = AllMyCircuits::Breaker.new(
      name: "my_service",
      watch_errors: [Timeout::Error],               # defaults to AllMyCircuits::Breaker.net_errors,
                                                    #   which includes typical net/http and socket errors
      sleep_seconds: 10,                            # leave circuit open for 10 seconds, than try to call the service again
      strategy: AllMyCircuits::Strategies::PercentageOverWindowStrategy.new(
        requests_window: 100,                       # number of requests to calculate the average failure rate for
        failure_rate_percent_threshold: 25          # open circuit if 25% or more requests within 100-request window fail
                                                    #   must trip open again if the first request fails
      }
    )
  end

  def run
    begin
      @breaker.run do
        Timeout.timeout(1.0) { my_risky_call }
      end
    rescue AllMyCircuits::BreakerOpen => e
      # log me somewhere
    rescue
      # uh-oh, risky call failed once
    end
  end
end