Module: Mixlib::Log

Defined in:
lib/mixlib/log.rb,
lib/mixlib/log/version.rb,
lib/mixlib/log/formatter.rb

Defined Under Namespace

Classes: Formatter

Constant Summary collapse

LEVELS = 
{ :debug => Logger::DEBUG, :info => Logger::INFO, :warn => Logger::WARN, :error => Logger::ERROR, :fatal => Logger::FATAL }.freeze
LEVEL_NAMES = 
LEVELS.invert.freeze
VERSION = 
"1.7.1"

Instance Method Summary collapse

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

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

Passes any other method calls on directly to the underlying Logger object created with init. If this method gets hit before a call to Mixlib::Logger.init has been made, it will call Mixlib::Logger.init() with no arguments.



151
152
153
 
# File 'lib/mixlib/log.rb', line 151

def method_missing(method_symbol, *args, &block)
  loggers.each { |l| l.send(method_symbol, *args, &block) }
end

Instance Method Details

#<<(msg) ⇒ Object 



138
139
140
 
# File 'lib/mixlib/log.rb', line 138

def <<(msg)
  loggers.each { |l| l << msg }
end

#add(severity, message = nil, progname = nil, &block) ⇒ Object Also known as: log 



142
143
144
 
# File 'lib/mixlib/log.rb', line 142

def add(severity, message = nil, progname = nil, &block)
  loggers.each { |l| l.add(severity, message, progname, &block) }
end

#configured? ⇒ Boolean

Let the application query if logging objects have been set up

Returns:

  • (Boolean) 


89
90
91
 
# File 'lib/mixlib/log.rb', line 89

def configured?
  @configured
end

#init(*opts) ⇒ Object

Use Mixlib::Log.init when you want to set up the logger manually. Arguments to this method get passed directly to Logger.new, so check out the documentation for the standard Logger class to understand what to do here.

If this method is called with no arguments, it will log to STDOUT at the :warn level.

It also configures the Logger instance it creates to use the custom Mixlib::Log::Formatter class.



79
80
81
82
83
84
85
86
 
# File 'lib/mixlib/log.rb', line 79

def init(*opts)
  reset!
  @logger = logger_for(*opts)
  @logger.formatter = Mixlib::Log::Formatter.new() if @logger.respond_to?(:formatter=)
  @logger.level = Logger::WARN
  @configured = true
  @logger
end

#level(new_level = nil) ⇒ Object 



108
109
110
111
112
113
114
 
# File 'lib/mixlib/log.rb', line 108

def level(new_level = nil)
  if new_level.nil?
    LEVEL_NAMES[logger.level]
  else
    self.level = (new_level)
  end
end

#level=(new_level) ⇒ Object

Sets the level for the Logger object by symbol. Valid arguments are:

:debug
:info
:warn
:error
:fatal

Throws an ArgumentError if you feed it a bogus log level.

Raises:

  • (ArgumentError) 


102
103
104
105
106
 
# File 'lib/mixlib/log.rb', line 102

def level=(new_level)
  level_int = LEVEL_NAMES.key?(new_level) ? new_level : LEVELS[new_level]
  raise ArgumentError, "Log level must be one of :debug, :info, :warn, :error, or :fatal" if level_int.nil?
  loggers.each { |l| l.level = level_int }
end

#logger ⇒ Object

init always returns a configured logger and creates a new one if it doesn’t yet exist



46
47
48
 
# File 'lib/mixlib/log.rb', line 46

def logger
  @logger || init
end

#logger=(new_log_device) ⇒ Object

Sets the log device to new_log_device. Any additional loggers that had been added to the loggers array will be cleared.



52
53
54
55
 
# File 'lib/mixlib/log.rb', line 52

def logger=(new_log_device)
  reset!
  @logger = new_log_device
end

#loggers ⇒ Object

An Array of log devices that will be logged to. Defaults to just the default



38
39
40
 
# File 'lib/mixlib/log.rb', line 38

def loggers
  @loggers ||= [logger]
end

#reset! ⇒ Object 



31
32
33
34
 
# File 'lib/mixlib/log.rb', line 31

def reset!
  close!
  @logger, @loggers = nil, nil
end

#use_log_devices(other) ⇒ Object 



57
58
59
60
61
62
63
64
65
66
67
68
69
70
 
# File 'lib/mixlib/log.rb', line 57

def use_log_devices(other)
  if other.respond_to?(:loggers) && other.respond_to?(:logger)
    @loggers = other.loggers
    @logger = other.logger
  elsif other.kind_of?(Array)
    @loggers = other
    @logger = other.first
  else
    msg = "#use_log_devices takes a Mixlib::Log object or array of log devices. " <<
      "You gave: #{other.inspect}"
    raise ArgumentError, msg
  end
  @configured = true
end