File logger
If you need to log to a file you can use Ruby's Logger class:
require 'logger'
log = Logger.new('log/mylog.log')
log.info 'Some information'
log.debug 'Debugging hints'
log.error StandardError.new('Something went wrong')
Logger does a number of things well:
- Message type (info / debug / error) is logged
- Log entries are timestamped
- Writing log output is synchronized between threads
- Logged errors are printed with full backtraces
If you don't like the output format, you can define a custom formatter.
I haven't found a nice way to make Logger auto-flush after every line, but there are hacks.
Stdout logger
require 'logger'
log = Logger.new(STDOUT)
log.info 'Some information'
Posted by Henning Koch to makandra dev (2015-04-01 15:35)