class GCSLock::Utils

Public Class Methods

backoff(min_backoff:, max_backoff:, timeout: nil) { || ... } click to toggle source
# File lib/gcslock/utils.rb, line 4
def backoff(min_backoff:, max_backoff:, timeout: nil)
  backoff = min_backoff

  now = Time.now
  end_time = now + timeout unless timeout.nil?

  loop do
    return true if yield
    break if !timeout.nil? && now + backoff >= end_time
    sleep(backoff)

    backoff_opts = [max_backoff, backoff * 2]

    unless timeout.nil?
      now = Time.now
      diff = end_time - now
      backoff_opts.push(diff) if diff > 0
    end

    backoff = backoff_opts.min
  end

  raise LockTimeoutError, "Backoff timed out"
end