Module: PhusionPassenger::DebugLogging

Included in:
RequestHandler, RequestHandler::ThreadHandler
Defined in:
lib/phusion_passenger/debug_logging.rb

Constant Summary collapse

@@log_level =

We don’t refer to STDERR directly because STDERR’s reference might change during runtime.

0
@@log_device = 
nil
@@log_filename = 
nil
@@stderr_evaluator = 
lambda { STDERR }

Class Method Summary collapse

Class Method Details

._log_device ⇒ Object 



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# File 'lib/phusion_passenger/debug_logging.rb', line 59

def self._log_device
	return @@log_device
end

.debug(message) ⇒ Object 



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# File 'lib/phusion_passenger/debug_logging.rb', line 81

def debug(message)
	trace(1, message, 1)
end

.error(message) ⇒ Object 



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# File 'lib/phusion_passenger/debug_logging.rb', line 71

def error(message)
	trace(-1, message, 1)
end

.included(klass) ⇒ Object 



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# File 'lib/phusion_passenger/debug_logging.rb', line 34

def self.included(klass)
	klass.class_eval do
		private :debug
		private :trace
	end
end

.log_file=(filename) ⇒ Object 



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# File 'lib/phusion_passenger/debug_logging.rb', line 49

def self.log_file=(filename)
	if filename && filename.empty?
		@@log_filename = nil
	else
		@@log_filename = filename
	end
	@@log_device.close if @@log_device && !@@log_device.closed?
	@@log_device = nil
end

.log_level ⇒ Object 



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# File 'lib/phusion_passenger/debug_logging.rb', line 41

def self.log_level
	return @@log_level
end

.log_level=(level) ⇒ Object 



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# File 'lib/phusion_passenger/debug_logging.rb', line 45

def self.log_level=(level)
	@@log_level = level
end

.stderr_evaluator=(block) ⇒ Object 



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# File 'lib/phusion_passenger/debug_logging.rb', line 63

def self.stderr_evaluator=(block)
	if block
		@@stderr_evaluator = block
	else
		@@stderr_evaluator = lambda { STDERR }
	end
end

.trace(level, message, nesting_level = 0) ⇒ Object 



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# File 'lib/phusion_passenger/debug_logging.rb', line 86

def trace(level, message, nesting_level = 0)
	if @@log_level >= level
		if @@log_filename
			if !@@log_device || @@log_device.closed?
				@@log_device = File.open(@@log_filename, "a")
			end
			output = @@log_device
		else
			output = @@stderr_evaluator.call
		end
		location = caller[nesting_level].sub(/.*phusion_passenger\//, '')
		location.sub!(/(.*):.*/, '\1')
		now = Time.now
		time_str = now.strftime("%Y-%m-%d %H:%M:%S.")
		time_str << sprintf("%04d", now.usec / 100)

		current_thread = Thread.current
		if !(thread_id = current_thread[:id])
			current_thread.to_s =~ /:(0x[0-9a-f]+)/i
			thread_id = current_thread[:id] = $1 || '?'
		end
		if thread_name = current_thread[:name]
			thread_name = "(#{thread_name})"
		end

		output.write("[ #{time_str} #{$$}/#{thread_id}#{thread_name} #{location} ]: #{message}\n")
		output.flush
	end
end

.warn(message) ⇒ Object 



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# File 'lib/phusion_passenger/debug_logging.rb', line 76

def warn(message)
	trace(0, message, 1)
end