Commit | Line | Data |
0daa11f3 |
1 | package Log::Contextual; |
2 | |
a2777569 |
3 | use strict; |
4 | use warnings; |
2033c911 |
5 | |
0c180ced |
6 | our $VERSION = '0.004202'; |
2033c911 |
7 | |
ae9785e2 |
8 | my @levels = qw(debug trace warn info error fatal); |
9 | |
675503c7 |
10 | use Exporter::Declare; |
11 | use Exporter::Declare::Export::Generator; |
f11f9542 |
12 | use Data::Dumper::Concise; |
5b094c87 |
13 | use Scalar::Util 'blessed'; |
8112b699 |
14 | use Log::Contextual::Router; |
2033c911 |
15 | |
ae9785e2 |
16 | my @dlog = ((map "Dlog_$_", @levels), (map "DlogS_$_", @levels)); |
17 | |
18 | my @log = ((map "log_$_", @levels), (map "logS_$_", @levels)); |
f11f9542 |
19 | |
b144ba01 |
20 | eval { |
21 | require Log::Log4perl; |
22 | die if $Log::Log4perl::VERSION < 1.29; |
23 | Log::Log4perl->wrapper_register(__PACKAGE__) |
24 | }; |
25 | |
5fd26f45 |
26 | # ____ is because tags must have at least one export and we don't want to |
27 | # export anything but the levels selected |
28 | sub ____ {} |
29 | |
30 | exports ('____', |
f11f9542 |
31 | @dlog, @log, |
9b8e24d5 |
32 | qw( set_logger with_logger ) |
f11f9542 |
33 | ); |
34 | |
5fd26f45 |
35 | export_tag dlog => ('____'); |
36 | export_tag log => ('____'); |
675503c7 |
37 | import_arguments qw(logger package_logger default_logger); |
38 | |
8112b699 |
39 | sub arg_router { return $_[1] if defined $_[1]; our $Router_Instance ||= Log::Contextual::Router->new } |
40 | sub arg_logger { $_[1] } |
41 | sub arg_levels { $_[1] || [qw(debug trace warn info error fatal)] } |
42 | sub arg_package_logger { $_[1] } |
43 | sub arg_default_logger { $_[1] } |
44 | |
675503c7 |
45 | sub before_import { |
46 | my ($class, $importer, $spec) = @_; |
8112b699 |
47 | my $router = $class->arg_router; |
f11f9542 |
48 | |
f11f9542 |
49 | die 'Log::Contextual does not have a default import list' |
675503c7 |
50 | if $spec->config->{default}; |
51 | |
8112b699 |
52 | $router->before_import(@_); |
53 | |
5fd26f45 |
54 | my @levels = @{$class->arg_levels($spec->config->{levels})}; |
675503c7 |
55 | for my $level (@levels) { |
56 | if ($spec->config->{log}) { |
57 | $spec->add_export("&log_$level", sub (&@) { |
8112b699 |
58 | my ($code, @args) = @_; |
59 | my @loggers = $router->get_loggers(scalar(caller), $level); |
60 | foreach my $logger (@loggers) { |
61 | $logger->$level($code->(@args)); |
62 | } |
63 | return @args; |
675503c7 |
64 | }); |
65 | $spec->add_export("&logS_$level", sub (&@) { |
8112b699 |
66 | my $code = shift; |
67 | my @loggers = $router->get_loggers(scalar(caller), $level); |
68 | foreach my $logger (@loggers) { |
69 | $logger->$level($code->(@_)); |
70 | } |
71 | return shift; |
675503c7 |
72 | }); |
73 | } |
74 | if ($spec->config->{dlog}) { |
75 | $spec->add_export("&Dlog_$level", sub (&@) { |
8112b699 |
76 | my ($code, @args) = @_; |
77 | my $dumped = (@args?Data::Dumper::Concise::Dumper @args:'()'); |
78 | my @loggers = $router->get_loggers(scalar(caller), $level); |
79 | foreach my $logger (@loggers) { |
80 | $logger->$level(do { local $_ = $dumped; $code->(@args); }); |
81 | } |
82 | return @args; |
675503c7 |
83 | }); |
84 | $spec->add_export("&DlogS_$level", sub (&$) { |
8112b699 |
85 | my ($code, $ref) = @_; |
86 | my $dumped = Data::Dumper::Concise::Dumper $ref; |
87 | my @loggers = $router->get_loggers(scalar(caller), $level); |
88 | foreach my $logger (@loggers) { |
89 | $logger->$level(do { local $_ = $dumped; $code->($ref); }); |
90 | } |
91 | return $ref; |
675503c7 |
92 | }); |
a2777569 |
93 | } |
94 | } |
675503c7 |
95 | } |
96 | |
8112b699 |
97 | sub after_import { return arg_router()->after_import(@_) } |
7cec609c |
98 | |
8dc5a747 |
99 | sub set_logger { |
8112b699 |
100 | my $router = arg_router(); |
101 | my $meth = $router->can('set_logger'); |
5d8f2b84 |
102 | |
8112b699 |
103 | die ref($router) . " does not support set_logger()" |
104 | unless defined $meth; |
7cec609c |
105 | |
8112b699 |
106 | return $router->$meth(@_); |
2daff231 |
107 | } |
108 | |
8112b699 |
109 | sub with_logger { |
110 | my $router = arg_router(); |
111 | my $meth = $router->can('with_logger'); |
d11de6ae |
112 | |
8112b699 |
113 | die ref($router) . " does not support with_logger()" |
114 | unless defined $meth; |
d11de6ae |
115 | |
8112b699 |
116 | return $router->$meth(@_); |
709d11fe |
117 | } |
118 | |
0daa11f3 |
119 | 1; |
0a3750e2 |
120 | |
121 | __END__ |
122 | |
2daff231 |
123 | =head1 NAME |
124 | |
8bc568d2 |
125 | Log::Contextual - Simple logging interface with a contextual log |
2daff231 |
126 | |
127 | =head1 SYNOPSIS |
128 | |
9b8e24d5 |
129 | use Log::Contextual qw( :log :dlog set_logger with_logger ); |
5b094c87 |
130 | use Log::Contextual::SimpleLogger; |
131 | use Log::Log4perl ':easy'; |
132 | Log::Log4perl->easy_init($DEBUG); |
2daff231 |
133 | |
5b094c87 |
134 | my $logger = Log::Log4perl->get_logger; |
135 | |
136 | set_logger $logger; |
2daff231 |
137 | |
9b8e24d5 |
138 | log_debug { 'program started' }; |
2daff231 |
139 | |
140 | sub foo { |
f9bf084b |
141 | |
142 | my $minilogger = Log::Contextual::SimpleLogger->new({ |
143 | levels => [qw( trace debug )] |
144 | }); |
145 | |
146 | with_logger $minilogger => sub { |
21431192 |
147 | log_trace { 'foo entered' }; |
9b8e24d5 |
148 | my ($foo, $bar) = Dlog_trace { "params for foo: $_" } @_; |
2daff231 |
149 | # ... |
21431192 |
150 | log_trace { 'foo left' }; |
f9bf084b |
151 | }; |
2daff231 |
152 | } |
153 | |
5b094c87 |
154 | foo(); |
155 | |
9fe4eeb3 |
156 | Beginning with version 1.008 L<Log::Dispatchouli> also works out of the box |
157 | with C<Log::Contextual>: |
158 | |
159 | use Log::Contextual qw( :log :dlog set_logger ); |
160 | use Log::Dispatchouli; |
161 | my $ld = Log::Dispatchouli->new({ |
162 | ident => 'slrtbrfst', |
163 | to_stderr => 1, |
164 | debug => 1, |
165 | }); |
166 | |
167 | set_logger $ld; |
168 | |
169 | log_debug { 'program started' }; |
170 | |
2daff231 |
171 | =head1 DESCRIPTION |
172 | |
30d7027a |
173 | Major benefits: |
174 | |
175 | =over 2 |
176 | |
177 | =item * Efficient |
178 | |
179 | The logging functions take blocks, so if a log level is disabled, the |
180 | block will not run: |
181 | |
182 | # the following won't run if debug is off |
183 | log_debug { "the new count in the database is " . $rs->count }; |
184 | |
185 | Similarly, the C<D> prefixed methods only C<Dumper> the input if the level is |
186 | enabled. |
187 | |
188 | =item * Handy |
189 | |
190 | The logging functions return their arguments, so you can stick them in |
191 | the middle of expressions: |
192 | |
193 | for (log_debug { "downloading:\n" . join qq(\n), @_ } @urls) { ... } |
194 | |
195 | =item * Generic |
196 | |
197 | C<Log::Contextual> is an interface for all major loggers. If you log through |
198 | C<Log::Contextual> you will be able to swap underlying loggers later. |
199 | |
200 | =item * Powerful |
201 | |
39cd2f65 |
202 | C<Log::Contextual> chooses which logger to use based on L<< user defined C<CodeRef>s|/LOGGER CODEREF >>. |
30d7027a |
203 | Normally you don't need to know this, but you can take advantage of it when you |
204 | need to later |
205 | |
206 | =item * Scalable |
207 | |
208 | If you just want to add logging to your extremely basic application, start with |
209 | L<Log::Contextual::SimpleLogger> and then as your needs grow you can switch to |
210 | L<Log::Dispatchouli> or L<Log::Dispatch> or L<Log::Log4perl> or whatever else. |
211 | |
212 | =back |
213 | |
214 | This module is a simple interface to extensible logging. It exists to |
215 | abstract your logging interface so that logging is as painless as possible, |
216 | while still allowing you to switch from one logger to another. |
3dc9bd3c |
217 | |
30d7027a |
218 | It is bundled with a really basic logger, L<Log::Contextual::SimpleLogger>, |
219 | but in general you should use a real logger instead of that. For something |
220 | more serious but not overly complicated, try L<Log::Dispatchouli> (see |
221 | L</SYNOPSIS> for example.) |
a2af6976 |
222 | |
e36f2183 |
223 | =head1 A WORK IN PROGRESS |
224 | |
225 | This module is certainly not complete, but we will not break the interface |
226 | lightly, so I would say it's safe to use in production code. The main result |
227 | from that at this point is that doing: |
228 | |
229 | use Log::Contextual; |
230 | |
231 | will die as we do not yet know what the defaults should be. If it turns out |
232 | that nearly everyone uses the C<:log> tag and C<:dlog> is really rare, we'll |
233 | probably make C<:log> the default. But only time and usage will tell. |
234 | |
235 | =head1 IMPORT OPTIONS |
236 | |
237 | See L</SETTING DEFAULT IMPORT OPTIONS> for information on setting these project |
238 | wide. |
3dc9bd3c |
239 | |
c154d18a |
240 | =head2 -logger |
241 | |
3dc9bd3c |
242 | When you import this module you may use C<-logger> as a shortcut for |
243 | L<set_logger>, for example: |
244 | |
245 | use Log::Contextual::SimpleLogger; |
9b8e24d5 |
246 | use Log::Contextual qw( :dlog ), |
247 | -logger => Log::Contextual::SimpleLogger->new({ levels => [qw( debug )] }); |
3dc9bd3c |
248 | |
249 | sometimes you might want to have the logger handy for other stuff, in which |
250 | case you might try something like the following: |
251 | |
252 | my $var_log; |
253 | BEGIN { $var_log = VarLogger->new } |
9b8e24d5 |
254 | use Log::Contextual qw( :dlog ), -logger => $var_log; |
3dc9bd3c |
255 | |
5fd26f45 |
256 | =head2 -levels |
257 | |
258 | The C<-levels> import option allows you to define exactly which levels your |
259 | logger supports. So the default, |
260 | C<< [qw(debug trace warn info error fatal)] >>, works great for |
261 | L<Log::Log4perl>, but it doesn't support the levels for L<Log::Dispatch>. But |
262 | supporting those levels is as easy as doing |
263 | |
264 | use Log::Contextual |
265 | -levels => [qw( debug info notice warning error critical alert emergency )]; |
266 | |
e2b4b29c |
267 | =head2 -package_logger |
268 | |
269 | The C<-package_logger> import option is similar to the C<-logger> import option |
270 | except C<-package_logger> sets the the logger for the current package. |
271 | |
272 | Unlike L</-default_logger>, C<-package_logger> cannot be overridden with |
273 | L</set_logger>. |
274 | |
275 | package My::Package; |
276 | use Log::Contextual::SimpleLogger; |
277 | use Log::Contextual qw( :log ), |
278 | -package_logger => Log::Contextual::WarnLogger->new({ |
279 | env_prefix => 'MY_PACKAGE' |
280 | }); |
281 | |
282 | If you are interested in using this package for a module you are putting on |
283 | CPAN we recommend L<Log::Contextual::WarnLogger> for your package logger. |
284 | |
c154d18a |
285 | =head2 -default_logger |
286 | |
287 | The C<-default_logger> import option is similar to the C<-logger> import option |
e2b4b29c |
288 | except C<-default_logger> sets the the B<default> logger for the current package. |
c154d18a |
289 | |
290 | Basically it sets the logger to be used if C<set_logger> is never called; so |
291 | |
292 | package My::Package; |
293 | use Log::Contextual::SimpleLogger; |
294 | use Log::Contextual qw( :log ), |
295 | -default_logger => Log::Contextual::WarnLogger->new({ |
ae59bbe3 |
296 | env_prefix => 'MY_PACKAGE' |
c154d18a |
297 | }); |
298 | |
e36f2183 |
299 | =head1 SETTING DEFAULT IMPORT OPTIONS |
3dc9bd3c |
300 | |
e36f2183 |
301 | Eventually you will get tired of writing the following in every single one of |
302 | your packages: |
3dc9bd3c |
303 | |
e36f2183 |
304 | use Log::Log4perl; |
305 | use Log::Log4perl ':easy'; |
306 | BEGIN { Log::Log4perl->easy_init($DEBUG) } |
3dc9bd3c |
307 | |
e36f2183 |
308 | use Log::Contextual -logger => Log::Log4perl->get_logger; |
309 | |
310 | You can set any of the import options for your whole project if you define your |
311 | own C<Log::Contextual> subclass as follows: |
312 | |
313 | package MyApp::Log::Contextual; |
314 | |
315 | use base 'Log::Contextual'; |
316 | |
317 | use Log::Log4perl ':easy'; |
318 | Log::Log4perl->easy_init($DEBUG) |
319 | |
2b40dee5 |
320 | sub arg_default_logger { $_[1] || Log::Log4perl->get_logger } |
e36f2183 |
321 | sub arg_levels { [qw(debug trace warn info error fatal custom_level)] } |
322 | |
2b40dee5 |
323 | # or maybe instead of default_logger |
e36f2183 |
324 | sub arg_package_logger { $_[1] } |
e36f2183 |
325 | |
2b40dee5 |
326 | # and almost definitely not this, which is only here for completeness |
327 | sub arg_logger { $_[1] } |
e36f2183 |
328 | |
2b40dee5 |
329 | Note the C<< $_[1] || >> in C<arg_default_logger>. All of these methods are |
330 | passed the values passed in from the arguments to the subclass, so you can |
331 | either throw them away, honor them, die on usage, or whatever. To be clear, |
332 | if you define your subclass, and someone uses it as follows: |
e36f2183 |
333 | |
2b40dee5 |
334 | use MyApp::Log::Contextual -default_logger => $foo, |
335 | -levels => [qw(bar baz biff)]; |
336 | |
337 | Your C<arg_default_logger> method will get C<$foo> and your C<arg_levels> |
e36f2183 |
338 | will get C<[qw(bar baz biff)]>; |
2daff231 |
339 | |
340 | =head1 FUNCTIONS |
341 | |
342 | =head2 set_logger |
343 | |
344 | my $logger = WarnLogger->new; |
21431192 |
345 | set_logger $logger; |
346 | |
27141a7a |
347 | Arguments: L</LOGGER CODEREF> |
2daff231 |
348 | |
21431192 |
349 | C<set_logger> will just set the current logger to whatever you pass it. It |
350 | expects a C<CodeRef>, but if you pass it something else it will wrap it in a |
06e908c3 |
351 | C<CodeRef> for you. C<set_logger> is really meant only to be called from a |
352 | top-level script. To avoid foot-shooting the function will warn if you call it |
353 | more than once. |
2daff231 |
354 | |
355 | =head2 with_logger |
356 | |
357 | my $logger = WarnLogger->new; |
21431192 |
358 | with_logger $logger => sub { |
2daff231 |
359 | if (1 == 0) { |
360 | log_fatal { 'Non Logical Universe Detected' }; |
361 | } else { |
362 | log_info { 'All is good' }; |
363 | } |
80c3e48b |
364 | }; |
2daff231 |
365 | |
27141a7a |
366 | Arguments: L</LOGGER CODEREF>, C<CodeRef $to_execute> |
2daff231 |
367 | |
21431192 |
368 | C<with_logger> sets the logger for the scope of the C<CodeRef> C<$to_execute>. |
0e13e261 |
369 | As with L</set_logger>, C<with_logger> will wrap C<$returning_logger> with a |
21431192 |
370 | C<CodeRef> if needed. |
2daff231 |
371 | |
21431192 |
372 | =head2 log_$level |
2daff231 |
373 | |
0e13e261 |
374 | Import Tag: C<:log> |
3dc9bd3c |
375 | |
0e13e261 |
376 | Arguments: C<CodeRef $returning_message, @args> |
2daff231 |
377 | |
a4d67519 |
378 | C<log_$level> functions all work the same except that a different method |
21431192 |
379 | is called on the underlying C<$logger> object. The basic pattern is: |
2daff231 |
380 | |
0e13e261 |
381 | sub log_$level (&@) { |
21431192 |
382 | if ($logger->is_$level) { |
0e13e261 |
383 | $logger->$level(shift->(@_)); |
21431192 |
384 | } |
0e13e261 |
385 | @_ |
21431192 |
386 | } |
2daff231 |
387 | |
0e13e261 |
388 | Note that the function returns it's arguments. This can be used in a number of |
389 | ways, but often it's convenient just for partial inspection of passthrough data |
390 | |
391 | my @friends = log_trace { |
392 | 'friends list being generated, data from first friend: ' . |
393 | Dumper($_[0]->TO_JSON) |
394 | } generate_friend_list(); |
395 | |
396 | If you want complete inspection of passthrough data, take a look at the |
397 | L</Dlog_$level> functions. |
398 | |
a4d67519 |
399 | Which functions are exported depends on what was passed to L</-levels>. The |
400 | default (no C<-levels> option passed) would export: |
2daff231 |
401 | |
a4d67519 |
402 | =over 2 |
2daff231 |
403 | |
a4d67519 |
404 | =item log_trace |
2daff231 |
405 | |
a4d67519 |
406 | =item log_debug |
2daff231 |
407 | |
a4d67519 |
408 | =item log_info |
2daff231 |
409 | |
a4d67519 |
410 | =item log_warn |
2daff231 |
411 | |
a4d67519 |
412 | =item log_error |
2daff231 |
413 | |
a4d67519 |
414 | =item log_fatal |
2daff231 |
415 | |
a4d67519 |
416 | =back |
2daff231 |
417 | |
0e13e261 |
418 | =head2 logS_$level |
419 | |
420 | Import Tag: C<:log> |
421 | |
422 | Arguments: C<CodeRef $returning_message, Item $arg> |
423 | |
424 | This is really just a special case of the L</log_$level> functions. It forces |
425 | scalar context when that is what you need. Other than that it works exactly |
426 | same: |
427 | |
428 | my $friend = logS_trace { |
429 | 'I only have one friend: ' . Dumper($_[0]->TO_JSON) |
430 | } friend(); |
431 | |
432 | See also: L</DlogS_$level>. |
433 | |
21431192 |
434 | =head2 Dlog_$level |
435 | |
0e13e261 |
436 | Import Tag: C<:dlog> |
3dc9bd3c |
437 | |
0e13e261 |
438 | Arguments: C<CodeRef $returning_message, @args> |
2daff231 |
439 | |
0e13e261 |
440 | All of the following six functions work the same as their L</log_$level> |
9b8e24d5 |
441 | brethren, except they return what is passed into them and put the stringified |
21431192 |
442 | (with L<Data::Dumper::Concise>) version of their args into C<$_>. This means |
443 | you can do cool things like the following: |
444 | |
445 | my @nicks = Dlog_debug { "names: $_" } map $_->value, $frew->names->all; |
446 | |
447 | and the output might look something like: |
448 | |
449 | names: "fREW" |
450 | "fRIOUX" |
451 | "fROOH" |
452 | "fRUE" |
453 | "fiSMBoC" |
454 | |
a4d67519 |
455 | Which functions are exported depends on what was passed to L</-levels>. The |
456 | default (no C<-levels> option passed) would export: |
21431192 |
457 | |
a4d67519 |
458 | =over 2 |
21431192 |
459 | |
a4d67519 |
460 | =item Dlog_trace |
21431192 |
461 | |
a4d67519 |
462 | =item Dlog_debug |
21431192 |
463 | |
a4d67519 |
464 | =item Dlog_info |
21431192 |
465 | |
a4d67519 |
466 | =item Dlog_warn |
21431192 |
467 | |
a4d67519 |
468 | =item Dlog_error |
2daff231 |
469 | |
a4d67519 |
470 | =item Dlog_fatal |
2daff231 |
471 | |
a4d67519 |
472 | =back |
2daff231 |
473 | |
83b33eb5 |
474 | =head2 DlogS_$level |
475 | |
0e13e261 |
476 | Import Tag: C<:dlog> |
3dc9bd3c |
477 | |
0e13e261 |
478 | Arguments: C<CodeRef $returning_message, Item $arg> |
83b33eb5 |
479 | |
0e13e261 |
480 | Like L</logS_$level>, these functions are a special case of L</Dlog_$level>. |
481 | They only take a single scalar after the C<$returning_message> instead of |
482 | slurping up (and also setting C<wantarray>) all the C<@args> |
83b33eb5 |
483 | |
484 | my $pals_rs = DlogS_debug { "pals resultset: $_" } |
485 | $schema->resultset('Pals')->search({ perlers => 1 }); |
486 | |
27141a7a |
487 | =head1 LOGGER CODEREF |
488 | |
489 | Anywhere a logger object can be passed, a coderef is accepted. This is so |
490 | that the user can use different logger objects based on runtime information. |
491 | The logger coderef is passed the package of the caller the caller level the |
492 | coderef needs to use if it wants more caller information. The latter is in |
493 | a hashref to allow for more options in the future. |
494 | |
37a8266a |
495 | Here is a basic example of a logger that exploits C<caller> to reproduce the |
496 | output of C<warn> with a logger: |
497 | |
498 | my @caller_info; |
499 | my $var_log = Log::Contextual::SimpleLogger->new({ |
500 | levels => [qw(trace debug info warn error fatal)], |
501 | coderef => sub { chomp($_[0]); warn "$_[0] at $caller_info[1] line $caller_info[2].\n" } |
502 | }); |
503 | my $warn_faker = sub { |
504 | my ($package, $args) = @_; |
505 | @caller_info = caller($args->{caller_level}); |
506 | $var_log |
507 | }; |
508 | set_logger($warn_faker); |
509 | log_debug { 'test' }; |
510 | |
27141a7a |
511 | The following is an example that uses the information passed to the logger |
512 | coderef. It sets the global logger to C<$l3>, the logger for the C<A1> |
513 | package to C<$l1>, except the C<lol> method in C<A1> which uses the C<$l2> |
514 | logger and lastly the logger for the C<A2> package to C<$l2>. |
515 | |
37a8266a |
516 | Note that it increases the caller level as it dispatches based on where |
517 | the caller of the log function, not the log function itself. |
518 | |
27141a7a |
519 | my $complex_dispatcher = do { |
520 | |
521 | my $l1 = ...; |
522 | my $l2 = ...; |
523 | my $l3 = ...; |
524 | |
525 | my %registry = ( |
526 | -logger => $l3, |
527 | A1 => { |
528 | -logger => $l1, |
529 | lol => $l2, |
530 | }, |
531 | A2 => { -logger => $l2 }, |
532 | ); |
533 | |
534 | sub { |
535 | my ( $package, $info ) = @_; |
536 | |
537 | my $logger = $registry{'-logger'}; |
538 | if (my $r = $registry{$package}) { |
539 | $logger = $r->{'-logger'} if $r->{'-logger'}; |
37a8266a |
540 | my (undef, undef, undef, $sub) = caller($info->{caller_level} + 1); |
27141a7a |
541 | $sub =~ s/^\Q$package\E:://g; |
542 | $logger = $r->{$sub} if $r->{$sub}; |
543 | } |
544 | return $logger; |
545 | } |
546 | }; |
547 | |
548 | set_logger $complex_dispatcher; |
549 | |
3dc9bd3c |
550 | =head1 LOGGER INTERFACE |
551 | |
552 | Because this module is ultimately pretty looking glue (glittery?) with the |
553 | awesome benefit of the Contextual part, users will often want to make their |
554 | favorite logger work with it. The following are the methods that should be |
555 | implemented in the logger: |
556 | |
557 | is_trace |
558 | is_debug |
559 | is_info |
560 | is_warn |
561 | is_error |
562 | is_fatal |
563 | trace |
564 | debug |
565 | info |
566 | warn |
567 | error |
568 | fatal |
569 | |
570 | The first six merely need to return true if that level is enabled. The latter |
571 | six take the results of whatever the user returned from their coderef and log |
572 | them. For a basic example see L<Log::Contextual::SimpleLogger>. |
573 | |
2daff231 |
574 | =head1 AUTHOR |
575 | |
576 | frew - Arthur Axel "fREW" Schmidt <frioux@gmail.com> |
577 | |
578 | =head1 DESIGNER |
579 | |
580 | mst - Matt S. Trout <mst@shadowcat.co.uk> |
581 | |
582 | =head1 COPYRIGHT |
583 | |
a6e29e27 |
584 | Copyright (c) 2012 the Log::Contextual L</AUTHOR> and L</DESIGNER> as listed |
2daff231 |
585 | above. |
586 | |
587 | =head1 LICENSE |
588 | |
589 | This library is free software and may be distributed under the same terms as |
590 | Perl 5 itself. |
591 | |
592 | =cut |
593 | |