module Thin
# To be included in classes to allow some basic logging
# that can be silenced (<tt>Logging.silent=</tt>) or made
# more verbose.
# <tt>Logging.debug=</tt>: log all error backtrace and messages
# logged with +debug+.
# <tt>Logging.trace=</tt>: log all raw request and response and
# messages logged with +trace+.
module Logging
class << self
attr_writer :trace, :debug, :silent
def trace?; !@silent && @trace end
def debug?; !@silent && @debug end
def silent?; @silent end
end
# Deprecated silencer methods, those are now module methods
def silent
warn "`#{self.class.name}\#silent` deprecated, use `Thin::Logging.silent?` instead"
Logging.silent?
end
def silent=(value)
warn "`#{self.class.name}\#silent=` deprecated, use `Thin::Logging.silent = #{value}` instead"
Logging.silent = value
end
protected
# Log a message to the console
def log(msg)
puts msg unless Logging.silent?
end
# Log a message to the console if tracing is activated
def trace(msg=nil)
log msg || yield if Logging.trace?
end
# Log a message to the console if debugging is activated
def debug(msg=nil)
log msg || yield if Logging.debug?
end
# Log an error backtrace if debugging is activated
def log_error(e=$!)
debug "#{e}\n\t" + e.backtrace.join("\n\t")
end
end
end
