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# encoding: UTF-8
require 'log4r'
require 'mauve/configuration_builder'
module Mauve
module ConfigurationBuilders
class LoggerOutputter < ObjectBuilder
# Set up a Log4r::Outputter
#
# @param [String] outputter Outputter basic class name, like Stderr, Stdin, File.
#
def builder_setup(outputter)
@outputter = outputter.capitalize+"Outputter"
begin
Log4r.const_get(@outputter)
rescue NameError
require "log4r/outputter/#{@outputter.downcase}"
end
@outputter_name = anonymous_name
@args = {}
end
# The new outputter
#
# @return [Log4r::Outputter]
def result
@result ||= Log4r.const_get(@outputter).new("Mauve", @args)
end
# Set the formatter for this outputter (see Log4r::PatternFormatter for
# allowed patterns). SyntaxError is caught in the ObjectBuilder#parse
# method.
#
# @param [String] f The format
#
# @return [Log4r::PatternFormatter]
def format(f)
result.formatter = Log4r::PatternFormatter.new(:pattern => f)
end
# This is needed to be able to pass arbitrary arguments to Log4r
# outputters. Missing methods / bad arguments are caught in the
# ObjectBuilder#parse method.
#
# @param [String] name
# @param [Object] value
#
def method_missing(name, value=nil)
if value.nil?
result.send(name.to_sym)
else
@args[name.to_sym] = value
end
end
end
class Logger < ObjectBuilder
is_builder "outputter", LoggerOutputter
# Set up the new logger
#
def builder_setup
@result = Log4r::Logger['Mauve'] || Log4r::Logger.new('Mauve')
@default_format = nil
@default_level = Log4r::RootLogger.instance.level
end
# Set the default format. Syntax erros are caught in the
# ObjectBuilder#parse method.
#
# @param [String] f Any format pattern allowed by Log4r::PatternFormatter.
#
# @return [Log4r::PatternFormatter]
def default_format(f)
@default_formatter = Log4r::PatternFormatter.new(:pattern => f)
#
# Set all current outputters
#
result.outputters.each do |o|
o.formatter = @default_formatter if o.formatter.is_a?(Log4r::DefaultFormatter)
end
@default_formatter
end
# Set the default log level.
#
# @param [Integer] l The log level.
# @raise [ArgumentError] If the log level is bad
#
# @return [Integer] The log level set.
def default_level(l)
if Log4r::Log4rTools.valid_level?(l)
@default_level = l
else
raise ArgumentError.new "Bad default level set for the logger #{l.inspect}"
end
result.outputters.each do |o|
o.level = @default_level if o.level == Log4r::RootLogger.instance.level
end
@default_level
end
# This is called once an outputter has been created. It sets the default
# formatter and level, if these have been already set.
#
# @param [Log4r::Outputter] outputter Newly created outputter.
#
# @return [Log4r::Outputter] The adjusted outputter.
def created_outputter(outputter)
#
# Set the formatter and level for any newly created outputters
#
if @default_formatter
outputter.formatter = @default_formatter if outputter.formatter.is_a?(Log4r::DefaultFormatter)
end
if @default_level
outputter.level = @default_level if outputter.level == Log4r::RootLogger.instance.level
end
result.outputters << outputter
end
end
end
#
# this should live in Logger but can't due to
# http://briancarper.net/blog/ruby-instance_eval_constant_scoping_broken
#
module LoggerConstants
Log4r.define_levels(*Log4r::Log4rConfig::LogLevels) # ensure levels are loaded
# Debug logging
DEBUG = Log4r::DEBUG
# Info logging
INFO = Log4r::INFO
# Warn logging
WARN = Log4r::WARN
# Error logging
ERROR = Log4r::ERROR
# Fatal logging
FATAL = Log4r::FATAL
end
class ConfigurationBuilder < ObjectBuilder
include LoggerConstants
is_builder "logger", ConfigurationBuilders::Logger
end
end
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