Class: SimpleMutex::BaseCleaner

Inherits:
Object
  • Object
show all
Defined in:
lib/simple_mutex/base_cleaner.rb

Defined Under Namespace

Classes: SynchronizationAnomalyError

Constant Summary collapse

MAX_DEL_ATTEMPTS = 
3

Instance Method Summary collapse

Instance Method Details

#unlock ⇒ Object

rubocop:disable Metrics/MethodLength



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# File 'lib/simple_mutex/base_cleaner.rb', line 10

def unlock
  ::SimpleMutex.redis_check!

  logger&.info(start_msg)

  redis.keys.select do |lock_key|
    attempt = 0

    begin
      redis.watch(lock_key) do
        raw_data = redis.get(lock_key)
        raw_data = raw_data.value if raw_data.is_a?(Redis::Future)

        next if raw_data.nil?

        parsed_data = safe_parse(raw_data)

        next unless parsed_data&.dig("payload", "type") == type

        entity_id = parsed_data&.dig(*path_to_entity_id)

        next if entity_id.nil? || active?(entity_id)

        return_value = redis.multi { |multi| multi.del(lock_key) }

        log_iteration(lock_key, raw_data, return_value) unless logger.nil?

        result = return_value&.first

        raise SynchronizationAnomalyError, "Sync anomaly." unless result.is_a?(Integer)

        result.positive?
      ensure
        redis.unwatch
      end
    rescue SynchronizationAnomalyError
      retry if (attempt += 1) < MAX_DEL_ATTEMPTS
    end
  end

  logger&.info(end_msg)
end