Class: Vedeu::MonoLogger::LocklessLogDevice

Inherits:
LogDevice
  • Object
show all
Defined in:
lib/vedeu/support/log.rb

Instance Method Summary collapse

Constructor Details

#initialize(log = nil) ⇒ LocklessLogDevice

Returns a new instance of LocklessLogDevice.



31
32
33
34
35
36
37
38
39
40
 
# File 'lib/vedeu/support/log.rb', line 31

def initialize(log = nil)
  @dev = @filename = @shift_age = @shift_size = nil
  if log.respond_to?(:write) and log.respond_to?(:close)
    @dev = log
  else
    @dev = open_logfile(log)
    @dev.sync = true
    @filename = log
  end
end

Instance Method Details

#add_log_header(file) ⇒ Object (private) 



69
70
71
72
73
 
# File 'lib/vedeu/support/log.rb', line 69

def add_log_header(file)
  file.write(
    "# Logfile created on %s by %s\n" % [Time.now.to_s, Logger::ProgName]
  )
end

#close ⇒ Object 



48
49
50
 
# File 'lib/vedeu/support/log.rb', line 48

def close
  @dev.close rescue nil
end

#create_logfile(filename) ⇒ Object (private) 



62
63
64
65
66
67
 
# File 'lib/vedeu/support/log.rb', line 62

def create_logfile(filename)
  logdev = open(filename, (File::WRONLY | File::APPEND | File::CREAT))
  logdev.sync = true
  add_log_header(logdev)
  logdev
end

#open_logfile(filename) ⇒ Object (private) 



54
55
56
57
58
59
60
 
# File 'lib/vedeu/support/log.rb', line 54

def open_logfile(filename)
  if (FileTest.exist?(filename))
    open(filename, (File::WRONLY | File::APPEND))
  else
    create_logfile(filename)
  end
end

#write(message) ⇒ Object 



42
43
44
45
46
 
# File 'lib/vedeu/support/log.rb', line 42

def write(message)
  @dev.write(message)
rescue Exception => ignored
  warn("log writing failed. #{ignored}")
end