1Log::Dispatch::Output(3U)ser Contributed Perl DocumentatiLoong::Dispatch::Output(3)
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NAME

6       Log::Dispatch::Output - Base class for all Log::Dispatch::* objects
7

VERSION

9       version 2.70
10

SYNOPSIS

12         package Log::Dispatch::MySubclass;
13
14         use Log::Dispatch::Output;
15         use base qw( Log::Dispatch::Output );
16
17         sub new {
18             my $proto = shift;
19             my $class = ref $proto || $proto;
20
21             my %p = @_;
22
23             my $self = bless {}, $class;
24
25             $self->_basic_init(%p);
26
27             # Do more if you like
28
29             return $self;
30         }
31
32         sub log_message {
33             my $self = shift;
34             my %p    = @_;
35
36             # Do something with message in $p{message}
37         }
38
39         1;
40

DESCRIPTION

42       This module is the base class from which all Log::Dispatch::* objects
43       should be derived.
44

CONSTRUCTOR

46       The constructor, "new", must be overridden in a subclass. See Output
47       Classes for a description of the common parameters accepted by this
48       constructor.
49

METHODS

51       This class provides the following methods:
52
53   $output->_basic_init(%p)
54       This should be called from a subclass's constructor. Make sure to pass
55       the arguments in @_ to it. It sets the object's name and minimum level
56       from the passed parameters  It also sets up two other attributes which
57       are used by other Log::Dispatch::Output methods, level_names and
58       level_numbers.  Subclasses will perform parameter validation in this
59       method, and must also call the superclass's method.
60
61   $output->name
62       Returns the object's name.
63
64   $output->min_level
65       Returns the object's minimum log level.
66
67   $output->max_level
68       Returns the object's maximum log level.
69
70   $output->accepted_levels
71       Returns a list of the object's accepted levels (by name) from minimum
72       to maximum.
73
74   $output->log( level => $, message => $ )
75       Sends a message if the level is greater than or equal to the object's
76       minimum level. This method applies any message formatting callbacks
77       that the object may have.
78
79   $output->_should_log ($)
80       This method is called from the "log()" method with the log level of the
81       message to be logged as an argument. It returns a boolean value
82       indicating whether or not the message should be logged by this
83       particular object. The "log()" method will not process the message if
84       the return value is false.
85
86   $output->_level_as_number ($)
87       This method will take a log level as a string (or a number) and return
88       the number of that log level. If not given an argument, it returns the
89       calling object's log level instead. If it cannot determine the level
90       then it will croak.
91
92   $output->add_callback( $code )
93       Adds a callback (like those given during construction). It is added to
94       the end of the list of callbacks.
95
96   $dispatch->remove_callback( $code )
97       Remove the given callback from the list of callbacks.
98

SUBCLASSING

100       This class should be used as the base class for all logging objects you
101       create that you would like to work under the Log::Dispatch
102       architecture. Subclassing is fairly trivial. For most subclasses, if
103       you simply copy the code in the SYNOPSIS and then put some
104       functionality into the "log_message" method then you should be all set.
105       Please make sure to use the "_basic_init" method as described above.
106
107       The actual logging implementation should be done in a "log_message"
108       method that you write. Do not override "log"!.
109

SUPPORT

111       Bugs may be submitted at
112       <https://github.com/houseabsolute/Log-Dispatch/issues>.
113
114       I am also usually active on IRC as 'autarch' on "irc://irc.perl.org".
115

SOURCE

117       The source code repository for Log-Dispatch can be found at
118       <https://github.com/houseabsolute/Log-Dispatch>.
119

AUTHOR

121       Dave Rolsky <autarch@urth.org>
122

124       This software is Copyright (c) 2020 by Dave Rolsky.
125
126       This is free software, licensed under:
127
128         The Artistic License 2.0 (GPL Compatible)
129
130       The full text of the license can be found in the LICENSE file included
131       with this distribution.
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135perl v5.32.1                      2021-01-27          Log::Dispatch::Output(3)
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