Class | Logger::Application |
In: |
lib/logger.rb
|
Parent: | Object |
Application — Add logging support to your application.
class FooApp < Application def initialize(foo_app, application_specific, arguments) super('FooApp') # Name of the application. end def run ... log(WARN, 'warning', 'my_method1') ... @log.error('my_method2') { 'Error!' } ... end end status = FooApp.new(....).start
appname | [R] | |
logdev | [R] |
Application.new(appname = '')
appname: | Name of the application. |
Create an instance. Log device is STDERR by default. This can be changed with set_log.
# File lib/logger.rb, line 644 644: def initialize(appname = nil) 645: @appname = appname 646: @log = Logger.new(STDERR) 647: @log.progname = @appname 648: @level = @log.level 649: end
See Logger#add. This application‘s appname is used.
# File lib/logger.rb, line 692 692: def log(severity, message = nil, &block) 693: @log.add(severity, message, @appname, &block) if @log 694: end
Sets the log device for this application. See the class Logger for an explanation of the arguments.
# File lib/logger.rb, line 671 671: def set_log(logdev, shift_age = 0, shift_size = 1024000) 672: @log = Logger.new(logdev, shift_age, shift_size) 673: @log.progname = @appname 674: @log.level = @level 675: end
Start the application. Return the status code.
# File lib/logger.rb, line 654 654: def start 655: status = -1 656: begin 657: log(INFO, "Start of #{ @appname }.") 658: status = run 659: rescue 660: log(FATAL, "Detected an exception. Stopping ... #{$!} (#{$!.class})\n" << $@.join("\n")) 661: ensure 662: log(INFO, "End of #{ @appname }. (status: #{ status.to_s })") 663: end 664: status 665: end