Class: Logging::Logger

Inherits:
Object
  • Object
show all
Defined in:
lib/dldinternet/mixlib/logging.rb

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(name, *args) ⇒ Logger

call-seq:

Logger.new( name )
Logger[name]

Returns the logger identified by name.

When name is a String or a Symbol it will be used “as is” to retrieve the logger. When name is a Class the class name will be used to retrieve the logger. When name is an object the name of the object’s class will be used to retrieve the logger.

Example:

obj = MyClass.new

log1 = Logger.new(obj)
log2 = Logger.new(MyClass)
log3 = Logger['MyClass']

log1.object_id == log2.object_id         # => true
log2.object_id == log3.object_id         # => true



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# File 'lib/dldinternet/mixlib/logging.rb', line 318

def initialize( name, *args )
  case name
    when String
      raise(ArgumentError, "logger must have a name") if name.empty?
    else raise(ArgumentError, "logger name must be a String") end

  repo = ::Logging::Repository.instance
  opts = args.last.instance_of?(Hash) ? args.pop : {}
  _setup(name, opts.merge({:parent => repo.parent(name)}))
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(method, *args, &block) ⇒ Object 



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# File 'lib/dldinternet/mixlib/logging.rb', line 191

def method_missing(method, *args, &block)
  num = ::Logging::LEVELS[method.to_s] rescue nil
  if num.nil?
          if method.to_s.match(/\?$/)
            num = ::Logging::LEVELS[method.to_s.gsub(/\?$/,'')] rescue nil
            unless num.nil?
              if self.level > num
                return false
              else
                return true
              end
            end
          end
          log_event(::Logging::LogEvent.new(@name, ::Logging::LEVELS[::Logging::LNAMES[-1].to_s.downcase], "Invalid logging level '#{method}'", true))
          #raise NoMethodError(method)
          false
        else
          if self.level > num
            false
          else
            unless args.empty?
              data = block_given? ?  yield : args[0]
              trce = args[1] rescue nil
              log_event(::Logging::LogEvent.new(@name, num, data, trce.nil? ? self.caller_tracing : trce))
            end
            true
          end
        end
end

Class Method Details

.define_log_methods(logger) ⇒ Object 



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# File 'lib/dldinternet/mixlib/logging.rb', line 222

def define_log_methods( logger )
  ::Logging::LEVELS.each do |name,num|
    code =  "undef :#{name}  if method_defined? :#{name}\n"
    code << "undef :#{name}? if method_defined? :#{name}?\n"

    unless logger.level.is_a?(Integer)
      puts "logger.level for #{logger.name} is a #{logger.level.class} instead of a Integer!!!"
      exit -1
    end
    # if logger.level > num
    #   code << <<-CODE
    # def #{name}?( ) false end
    # def #{name}( data = nil, trce = false ) false end
    #   CODE
    # else
    #   code << <<-CODE
    # def #{name}?( ) true end
    # def #{name}( data = nil, trce = nil )
    #   caller = Kernel.caller[3]
    #   num = #{num}
    #   level =  #{logger.level}
    #   if num >= level
    #     data = yield if block_given?
    #     #log_event(::Logging::LogEvent.new(@name, num, caller, true))
    #     log_event(::Logging::LogEvent.new(@name, num, data, trce.nil? ? self.caller_tracing : trce))
    #   end
    #   true
    # end
    #   CODE
    # end
                  #
    # logger._meta_eval(code, __FILE__, __LINE__)
  end
  logger
end

Instance Method Details

#caller_tracing ⇒ Object 



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# File 'lib/dldinternet/mixlib/logging.rb', line 186

def caller_tracing
                @trace
end

#get_trace ⇒ Object 



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# File 'lib/dldinternet/mixlib/logging.rb', line 334

def get_trace
  @trace
end

#logEvent(evt) ⇒ Object 



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# File 'lib/dldinternet/mixlib/logging.rb', line 330

def logEvent(evt)
  log_event evt
end

#new(*args) ⇒ Object

Overrides the new method such that only one Logger will be created for any given logger name.



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# File 'lib/dldinternet/mixlib/logging.rb', line 262

def new( *args )
  return super if args.empty?

  repo = ::Logging::Repository.instance
  name = repo.to_key(args.shift)
  opts = args.last.instance_of?(Hash) ? args.pop : {}

  @mutex.synchronize do
    logger = repo[name]
    if logger.nil?

      master = repo.master_for(name)
      if master
        if repo.has_logger?(master)
          logger = repo[master]
        else
          logger = super(master)
          repo[master] = logger
          repo.children(master).each {|c| c.__send__(:parent=, logger)}
        end
        repo[name] = logger
      else
        logger = super(name, opts)
        repo[name] = logger
        repo.children(name).each {|c| c.__send__(:parent=, logger)}
      end
    end
    logger
  end
end