FSHandler

A handler that persists log data onto file system. Default file name pattern is topic.yyyy-mm-dd.log, in which:

• topic is topic property from invoking log method
• yyyy-mm-dd is formated string from current date

Default template for formatting log lines is [<%= datetime %>][<%= pid %>] <%= text %>\n

• datetime is in ISO datetime format
• pid is the process id
• text is the output of formatter of log method