Early review of std.logger

[ilya-stromberg]

On Monday, 14 October 2013 at 12:48:14 UTC, Martin Drasar wrote:
> 1) MultiLogger class that takes references to other loggers and 
> just
> forwards the call to the log function.

+1
Also, we should support a few loggers whith same type. For 
example, I can use 2 file loggers: the 1-st only for debug 
messages and the 2-nd for all other messages. It can help for 
message sorting.

Also, we should support a reserve loggers. For example, I can use 
a file logger as a default and a syslog as a reserve logger (it 
will be used if the file logger fails). It increases logger 
reliability.

Also, it will be perfect to have logger failed notifications. For 
example, the file logger failed can indicate that we haven't got 
free disc space, a file system problems or hard disk problems. 
So, we should inform admin about this problems. We can do it via 
stderr (for local computer only), via syslog network logger or 
via e-mail logger.