Method: NetSuite::Utilities#backoff

Defined in:
lib/netsuite/utilities.rb

#backoff(options = {}) ⇒ Object 



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# File 'lib/netsuite/utilities.rb', line 40

def backoff(options = {})
  # TODO the default backoff attempts should be customizable the global config
  options[:attempts] ||= 8

  count = 0

  begin
    count += 1
    yield
  rescue Exception => e
    exceptions_to_retry = [
      Errno::ECONNRESET,
      Errno::ETIMEDOUT,
      Errno::EHOSTUNREACH,
      EOFError,
      Wasabi::Resolver::HTTPError,
      Savon::SOAPFault,
      Savon::InvalidResponseError,
      Zlib::BufError,
      Savon::HTTPError,
      SocketError,
      Net::OpenTimeout
    ]

    # available in ruby > 1.9
    if defined?(Net::ReadTimeout)
      exceptions_to_retry << Net::ReadTimeout
    end

    # available in ruby > 2.2.0
    exceptions_to_retry << IO::EINPROGRESSWaitWritable if defined?(IO::EINPROGRESSWaitWritable)
    exceptions_to_retry << OpenSSL::SSL::SSLErrorWaitReadable if defined?(OpenSSL::SSL::SSLErrorWaitReadable)

    # depends on the http library chosen
    exceptions_to_retry << Excon::Error::Timeout if defined?(Excon::Error::Timeout)
    exceptions_to_retry << Excon::Error::Socket if defined?(Excon::Error::Socket)

    if !exceptions_to_retry.include?(e.class)
      raise
    end

    # whitelist certain SOAPFaults; all other network errors should automatically retry
    if e.is_a?(Savon::SOAPFault)
      # https://github.com/stripe/stripe-netsuite/issues/815
      if !e.message.include?("Only one request may be made against a session at a time") &&
        !e.message.include?('java.util.ConcurrentModificationException') &&
        !e.message.include?('com.netledger.common.exceptions.NLDatabaseOfflineException') &&
        !e.message.include?('com.netledger.database.NLConnectionUtil$NoCompanyDbsOnlineException') &&
        !e.message.include?('com.netledger.cache.CacheUnavailableException') &&
        !e.message.include?('An unexpected error occurred.') &&
        !e.message.include?('Session invalidation is in progress with different thread') &&
        !e.message.include?('SuiteTalk concurrent request limit exceeded. Request blocked.') &&
        !e.message.include?('The Connection Pool is not intialized.') &&
        # it looks like NetSuite mispelled their error message...
        !e.message.include?('The Connection Pool is not intiialized.')
        raise
      end
    end

    if count >= options[:attempts]
      raise
    end

    # log.warn("concurrent request failure", sleep: count, attempt: count)
    sleep(count)

    retry
  end
end