Module: ActionController::Benchmarking::ClassMethods

Defined in:
lib/action_controller/benchmarking.rb

Instance Method Summary collapse

Instance Method Details

#benchmark(title, log_level = Logger::DEBUG, use_silence = true) ⇒ Object

Log and benchmark the workings of a single block and silence whatever logging that may have happened inside it (unless use_silence is set to false).

The benchmark is only recorded if the current level of the logger matches the log_level, which makes it easy to include benchmarking statements in production software that will remain inexpensive because the benchmark will only be conducted if the log level is low enough.



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# File 'lib/action_controller/benchmarking.rb', line 23

def benchmark(title, log_level = Logger::DEBUG, use_silence = true)
  if logger && logger.level == log_level
    result = nil
    ms = Benchmark.ms { result = use_silence ? silence { yield } : yield }
    logger.add(log_level, "#{title} (#{('%.1f' % ms)}ms)")
    result
  else
    yield
  end
end

#silence ⇒ Object

Silences the logger for the duration of the block.



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# File 'lib/action_controller/benchmarking.rb', line 35

def silence
  old_logger_level, logger.level = logger.level, Logger::ERROR if logger
  yield
ensure
  logger.level = old_logger_level if logger
end