package async_extended

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package async_extended
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Module
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include module type of struct include Async.Log end
module Level = Async.Log.Level
module Message = Async.Log.Message
module Rotation = Async.Log.Rotation
module Output = Async.Log.Output
module Blocking = Async.Log.Blocking
include sig ... end
val sexp_of_t : t -> Sexplib.Sexp.t
module type Global_intf = Async.Log.Global_intf

An interface for singleton logs

module Make_global = Async.Log.Make_global

This functor can be called to generate "singleton" logging modules

module Global = Async.Log.Global

Programs that want simplistic single-channel logging can open this module. It provides a global logging facility to a single output type at a single level. More nuanced logging can be had by using the functions that operate on a distinct Log.t type.

val set_level_via_param : t -> unit Core.Command.Param.t

Set the log level via a flag, if provided.

val set_level : t -> Level.t -> unit

messages sent at a level less than the current level will not be output.

val level : t -> Level.t

returns the last level passed to set_level, which will be the log level checked as a threshold against the level of the next message sent.

val set_output : t -> Output.t list -> unit

changes the output type of the log, which can be useful when daemonizing. The new output type will be applied to all subsequent messages.

val get_output : t -> Output.t list
val set_on_error : t -> [ `Raise | `Call of Core.Error.t -> unit ] -> unit

if `Raise is given then background errors raised by logging will be raised to the monitor that was in scope when create was called. Errors can be redirected anywhere by providing `Call f.

val close : t -> unit Async_kernel.Deferred.t

any call that writes to a log after close is called will raise.

val is_closed : t -> bool

returns true if close has been called

val flushed : t -> unit Async_kernel.Deferred.t

returns a Deferred.t that is fulfilled when the last message delivered to t before the call to flushed is out the door.

val rotate : t -> unit Async_kernel.Deferred.t

informs the current Outputs to rotate if possible

val create : level:Level.t -> output:Output.t list -> on_error:[ `Raise | `Call of Core.Error.t -> unit ] -> t

create a new log. See set_level, set_on_error and set_output for more.

val raw : ?time:Core.Time.t -> ?tags:(string * string) list -> t -> ('a, unit, string, unit) Core.format4 -> 'a

raw printf like logging for raw (no level) messages. Raw messages are still output with a timestamp.

val debug : ?time:Core.Time.t -> ?tags:(string * string) list -> t -> ('a, unit, string, unit) Core.format4 -> 'a

debug printf like logging at the `Debug log level

val info : ?time:Core.Time.t -> ?tags:(string * string) list -> t -> ('a, unit, string, unit) Core.format4 -> 'a

info printf like logging at the `Info log level

val error : ?time:Core.Time.t -> ?tags:(string * string) list -> t -> ('a, unit, string, unit) Core.format4 -> 'a

error printf like logging at the `Error log level

val printf : ?level:Level.t -> ?time:Core.Time.t -> ?tags:(string * string) list -> t -> ('a, unit, string, unit) Core.format4 -> 'a

printf generalized printf style logging

val sexp : ?level:Level.t -> ?time:Core.Time.t -> ?tags:(string * string) list -> t -> Core.Sexp.t -> unit

sexp log sexps directly

val string : ?level:Level.t -> ?time:Core.Time.t -> ?tags:(string * string) list -> t -> string -> unit

string logging of string values

val message : t -> Message.t -> unit

message log a preexisting message

val surround_s : ?level:Level.t -> ?time:Core.Time.t -> ?tags:(string * string) list -> t -> Core.Sexp.t -> (unit -> 'a Async_kernel.Deferred.t) -> 'a Async_kernel.Deferred.t

surround t message f logs message and a UUID once before calling f and again after f returns or raises. If f raises, the second message will include the exception, and surround itself will re-raise the exception tagged with message. As usual, the logging happens only if level exceeds the minimum level of t.

val surroundf : ?level:Level.t -> ?time:Core.Time.t -> ?tags:(string * string) list -> t -> ('a, unit, string, (unit -> 'b Async_kernel.Deferred.t) -> 'b Async_kernel.Deferred.t) Core.format4 -> 'a
val would_log : t -> Level.t option -> bool

would_log returns true if a message at the given log level would be logged if sent immediately.

module Reader = Async.Log.Reader
include module type of struct include Extended_log end
module Console = Extended_log.Console
module Syslog = Extended_log.Syslog