Manual Reference Pages - LOG::AGENT::TAG::CALLBACK (3)
Log::Agent::Tag::Callback - a dynamic tag string
# Inherits from Log::Agent::Tag.
my $tag = Log::Agent::Tag::Callback->make(
-name => "session id",
-callback => Callback->new($obj, method, @args),
-postfix => 1,
-separator => " -- ",
This class represents a dynamic tag string, whose value is determined
by invoking a pre-determined callback, which is described by a Callback
You need to make your application depend on the Callback module from CPAN
if you make use of this tagging feature, since Log::Agent does not
depend on it, on purpose (it does not really use it, it only offers an
interface to plug it in). At least version 1.02 must be used.
CREATION ROUTINE PARAMETERS
The following parameters are defined, in alphabetical order:
-callback => Callback object
The callback to invoke to determine the value of the tag. The call is
protected via a busy flag, in case there is an unwanted recursion due
to a call to one of the logging routines whilst within the callback.
If the callback is busy, the tag emitted is:
callback "user" busy
assuming user is the name you supplied via -name for this tag.
-name => name
The name of this tag. Used to flag a callback as busy in case there is
an unwanted recursion into the callback routine.
-postfix => flag
Whether tag should be placed after or before the log message.
By default, it is prepended to the log message, i.e. this parameter is false.
-separator => string
The separation string between the tag and the log message.
A single space by default.
Raphael Manfredi <Raphael_Manfredi@pobox.com>
Callback(3), Log::Agent::Tag(3), Log::Agent::Message(3).
|perl v5.20.3 ||AGENT::TAG::CALLBACK (3) ||2015-11-30 |
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