module Log: BatLog
val output : unit BatIO.output Stdlib.ref
This ref holds the output channel for simple logging. Defaults to
stderr
val prefix : string Stdlib.ref
This ref holds the text printed before each log message. Defaults to the empty string.
typeflag =
[ `Custom of unit -> string | `Date | `Filepos | `Time ]
val flags : flag list Stdlib.ref
This ref holds the output flags. These flags control how the log
messages are output. The default is `Date; `Time
and log
messages are printed as:
2011/0628 01:23:45: prefixmessage
val log : ?fp:string -> string -> unit
log s
logs the message s, returning unit.
val logf : ?fp:string -> ('a, unit BatIO.output, unit) Stdlib.Pervasives.format -> 'a
As Printf.printf
, only the message is printed to the logging
output and prefixed with status information per the current flags and
the currently set prefix.
val fatal : ?fp:string -> string -> 'a
fatal s
logs the message s
and then calls exit 1
. This
exits the program with return code 1.
val fatalf : ?fp:string -> ('a, unit BatIO.output, unit) Stdlib.Pervasives.format -> 'a
fatalf
allows a format string (as Printf.printf
)and the
arguments to that format string to build the logging message.
Exits the program with return code 1.
module type Config =sig
..end
module Make:
Build a logger module with custom, fixed output, prefix and flags
Returns an object with methods fatal
, fatalf
, log
, and
logf
that logs to the given output channel, with given prefix
and flags. These methods work like the corresponding functions in
the BatLog module.
val make_logger : 'a BatIO.output ->
string ->
[< `Custom of unit -> string | `Date | `Filepos | `Time ] list ->
< fatal : ?fp:string -> string -> 'b;
fatalf : ?fp:string ->
('c, 'a BatIO.output, unit, unit, unit, 'd) Stdlib.format6 -> 'c;
log : ?fp:string -> string -> unit;
logf : ?fp:string -> ('e, 'a BatIO.output, unit) Stdlib.format -> 'e >
typeeasy_lev =
[ `always | `debug | `error | `fatal | `info | `trace | `warn ]
The different verbosity levels supported in the Easy
logger
module Easy:sig
..end
A simple-to-use logger with verbosity levels that outputs by default to stderr (changeable at runtime) with the date and time at the beginning of each log message.
module type Level_sig =sig
..end
The details of a level scheme for verbosity-level loggers
module Make_lev:
Make your own level-based logger, like Easy