Commit | Line | Data |
fc7ec1d9 |
1 | package Catalyst::Log; |
2 | |
e5ecd5bc |
3 | use Moose; |
531f1ab6 |
4 | with 'MooseX::Emulate::Class::Accessor::Fast'; |
5 | |
f63c03e4 |
6 | use Data::Dump; |
e106a59f |
7 | use Class::MOP (); |
0816209f |
8 | use Carp qw/ cluck /; |
9b2bc37b |
9 | |
c72d2e24 |
10 | our %LEVELS = (); # Levels stored as bit field, ergo debug = 1, warn = 2 etc |
11 | our %LEVEL_MATCH = (); # Stored as additive, thus debug = 31, warn = 30 etc |
a6433a05 |
12 | |
3cdcf968 |
13 | has level => (is => 'rw'); |
5fb12dbb |
14 | has _body => (is => 'rw'); |
3cdcf968 |
15 | has abort => (is => 'rw'); |
21da7377 |
16 | has _psgi_logger => (is => 'rw', predicate => '_has_psgi_logger', clearer => '_clear_psgi_logger'); |
17 | has _psgi_errors => (is => 'rw', predicate => '_has_psgi_errors', clearer => '_clear_psgi_errors'); |
50f53fd7 |
18 | |
19 | sub clear_psgi { |
20 | my $self = shift; |
21 | $self->_clear_psgi_logger; |
22 | $self->_clear_psgi_errors; |
23 | } |
24 | |
25 | sub psgienv { |
26 | my ($self, $env) = @_; |
27 | |
21da7377 |
28 | $self->_psgi_logger($env->{'psgix.logger'}) if $env->{'psgix.logger'}; |
29 | $self->_psgi_errors($env->{'psgi.errors'}) if $env->{'psgi.errors'}; |
50f53fd7 |
30 | } |
31 | |
3cdcf968 |
32 | |
2f9e6321 |
33 | { |
a6433a05 |
34 | my @levels = qw[ debug info warn error fatal ]; |
846772b7 |
35 | |
e106a59f |
36 | my $meta = Class::MOP::get_metaclass_by_name(__PACKAGE__); |
c72d2e24 |
37 | my $summed_level = 0; |
38 | for ( my $i = $#levels ; $i >= 0 ; $i-- ) { |
846772b7 |
39 | |
40 | my $name = $levels[$i]; |
eaae9a92 |
41 | |
846772b7 |
42 | my $level = 1 << $i; |
c72d2e24 |
43 | $summed_level |= $level; |
eaae9a92 |
44 | |
a6433a05 |
45 | $LEVELS{$name} = $level; |
c72d2e24 |
46 | $LEVEL_MATCH{$name} = $summed_level; |
a6433a05 |
47 | |
4090e3bb |
48 | $meta->add_method($name, sub { |
846772b7 |
49 | my $self = shift; |
50 | |
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51 | if ( $self->level & $level ) { |
846772b7 |
52 | $self->_log( $name, @_ ); |
53 | } |
4090e3bb |
54 | }); |
846772b7 |
55 | |
4090e3bb |
56 | $meta->add_method("is_$name", sub { |
846772b7 |
57 | my $self = shift; |
3cdcf968 |
58 | return $self->level & $level; |
4090e3bb |
59 | });; |
846772b7 |
60 | } |
a6433a05 |
61 | } |
62 | |
4090e3bb |
63 | around new => sub { |
64 | my $orig = shift; |
a6433a05 |
65 | my $class = shift; |
4090e3bb |
66 | my $self = $class->$orig; |
e2422920 |
67 | |
c72d2e24 |
68 | $self->levels( scalar(@_) ? @_ : keys %LEVELS ); |
e2422920 |
69 | |
a6433a05 |
70 | return $self; |
4090e3bb |
71 | }; |
a6433a05 |
72 | |
73 | sub levels { |
74 | my ( $self, @levels ) = @_; |
75 | $self->level(0); |
76 | $self->enable(@levels); |
77 | } |
78 | |
79 | sub enable { |
80 | my ( $self, @levels ) = @_; |
3cdcf968 |
81 | my $level = $self->level; |
c72d2e24 |
82 | for(map { $LEVEL_MATCH{$_} } @levels){ |
3cdcf968 |
83 | $level |= $_; |
84 | } |
85 | $self->level($level); |
a6433a05 |
86 | } |
846772b7 |
87 | |
a6433a05 |
88 | sub disable { |
89 | my ( $self, @levels ) = @_; |
3cdcf968 |
90 | my $level = $self->level; |
91 | for(map { $LEVELS{$_} } @levels){ |
92 | $level &= ~$_; |
93 | } |
94 | $self->level($level); |
846772b7 |
95 | } |
96 | |
0816209f |
97 | our $HAS_DUMPED; |
a6433a05 |
98 | sub _dump { |
846772b7 |
99 | my $self = shift; |
0816209f |
100 | unless ($HAS_DUMPED++) { |
101 | cluck("Catalyst::Log::_dump is deprecated and will be removed. Please change to using your own Dumper.\n"); |
102 | } |
f63c03e4 |
103 | $self->info( Data::Dump::dump(@_) ); |
846772b7 |
104 | } |
105 | |
106 | sub _log { |
107 | my $self = shift; |
108 | my $level = shift; |
846772b7 |
109 | my $message = join( "\n", @_ ); |
21da7377 |
110 | if ($self->can('_has_psgi_logger') and $self->_has_psgi_logger) { |
111 | $self->_psgi_logger->({ |
0eb98ebd |
112 | level => $level, |
113 | message => $message, |
114 | }); |
115 | } else { |
208732e6 |
116 | $message .= "\n" unless $message =~ /\n$/; |
0eb98ebd |
117 | my $body = $self->_body; |
118 | $body .= sprintf( "[%s] %s", $level, $message ); |
119 | $self->_body($body); |
120 | } |
4be535b1 |
121 | } |
122 | |
123 | sub _flush { |
b5ecfcf0 |
124 | my $self = shift; |
3cdcf968 |
125 | if ( $self->abort || !$self->_body ) { |
b5ecfcf0 |
126 | $self->abort(undef); |
127 | } |
128 | else { |
3cdcf968 |
129 | $self->_send_to_log( $self->_body ); |
4be535b1 |
130 | } |
3cdcf968 |
131 | $self->_body(undef); |
846772b7 |
132 | } |
133 | |
adee716c |
134 | sub _send_to_log { |
135 | my $self = shift; |
21da7377 |
136 | if ($self->can('_has_psgi_errors') and $self->_has_psgi_errors) { |
137 | $self->_psgi_errors->print(@_); |
0eb98ebd |
138 | } else { |
139 | print STDERR @_; |
140 | } |
adee716c |
141 | } |
142 | |
71415389 |
143 | # 5.7 compat code. |
144 | # Alias _body to body, add a before modifier to warn.. |
145 | my $meta = __PACKAGE__->meta; # Calling meta method here fine as we happen at compile time. |
146 | $meta->add_method('body', $meta->get_method('_body')); |
eaae9a92 |
147 | my %package_hash; # Only warn once per method, per package. |
71415389 |
148 | # I haven't provided a way to disable them, patches welcome. |
149 | $meta->add_before_method_modifier('body', sub { |
150 | my $class = blessed(shift); |
151 | $package_hash{$class}++ || do { |
152 | warn("Class $class is calling the deprecated method Catalyst::Log->body method,\n" |
153 | . "this will be removed in Catalyst 5.81"); |
154 | }; |
155 | }); |
156 | # End 5.70 backwards compatibility hacks. |
157 | |
6680c772 |
158 | no Moose; |
d14f9123 |
159 | __PACKAGE__->meta->make_immutable(inline_constructor => 0); |
6680c772 |
160 | |
846772b7 |
161 | 1; |
162 | |
163 | __END__ |
fc7ec1d9 |
164 | |
a273dd58 |
165 | =for stopwords psgienv |
166 | |
fc7ec1d9 |
167 | =head1 NAME |
168 | |
169 | Catalyst::Log - Catalyst Log Class |
170 | |
171 | =head1 SYNOPSIS |
172 | |
82d2fcbe |
173 | $log = $c->log; |
846772b7 |
174 | $log->debug($message); |
175 | $log->info($message); |
176 | $log->warn($message); |
177 | $log->error($message); |
178 | $log->fatal($message); |
846772b7 |
179 | |
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180 | if ( $log->is_debug ) { |
846772b7 |
181 | # expensive debugging |
182 | } |
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183 | |
a6433a05 |
184 | |
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185 | See L<Catalyst>. |
186 | |
187 | =head1 DESCRIPTION |
188 | |
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189 | This module provides the default, simple logging functionality for Catalyst. |
190 | If you want something different set C<< $c->log >> in your application module, |
191 | e.g.: |
82d2fcbe |
192 | |
193 | $c->log( MyLogger->new ); |
194 | |
195 | Your logging object is expected to provide the interface described here. |
397be447 |
196 | Good alternatives to consider are Log::Log4Perl and Log::Dispatch. |
197 | |
198 | If you want to be able to log arbitrary warnings, you can do something along |
199 | the lines of |
200 | |
201 | $SIG{__WARN__} = sub { MyApp->log->warn(@_); }; |
202 | |
203 | however this is (a) global, (b) hairy and (c) may have unexpected side effects. |
204 | Don't say we didn't warn you. |
82d2fcbe |
205 | |
a6433a05 |
206 | =head1 LOG LEVELS |
207 | |
b5ecfcf0 |
208 | =head2 debug |
a6433a05 |
209 | |
210 | $log->is_debug; |
211 | $log->debug($message); |
212 | |
b5ecfcf0 |
213 | =head2 info |
a6433a05 |
214 | |
215 | $log->is_info; |
216 | $log->info($message); |
217 | |
b5ecfcf0 |
218 | =head2 warn |
a6433a05 |
219 | |
220 | $log->is_warn; |
221 | $log->warn($message); |
222 | |
b5ecfcf0 |
223 | =head2 error |
a6433a05 |
224 | |
225 | $log->is_error; |
226 | $log->error($message); |
227 | |
b5ecfcf0 |
228 | =head2 fatal |
a6433a05 |
229 | |
230 | $log->is_fatal; |
231 | $log->fatal($message); |
232 | |
b22c6668 |
233 | =head1 METHODS |
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234 | |
b5ecfcf0 |
235 | =head2 new |
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236 | |
26e73131 |
237 | Constructor. Defaults to enable all levels unless levels are provided in |
a6433a05 |
238 | arguments. |
239 | |
240 | $log = Catalyst::Log->new; |
26e73131 |
241 | $log = Catalyst::Log->new( 'warn', 'error' ); |
a6433a05 |
242 | |
3cdcf968 |
243 | =head2 level |
244 | |
245 | Contains a bitmask of the currently set log levels. |
246 | |
b5ecfcf0 |
247 | =head2 levels |
a6433a05 |
248 | |
249 | Set log levels |
b22c6668 |
250 | |
a6433a05 |
251 | $log->levels( 'warn', 'error', 'fatal' ); |
fc7ec1d9 |
252 | |
b5ecfcf0 |
253 | =head2 enable |
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254 | |
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255 | Enable log levels |
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256 | |
a6433a05 |
257 | $log->enable( 'warn', 'error' ); |
fc7ec1d9 |
258 | |
b5ecfcf0 |
259 | =head2 disable |
fc7ec1d9 |
260 | |
a6433a05 |
261 | Disable log levels |
fc7ec1d9 |
262 | |
a6433a05 |
263 | $log->disable( 'warn', 'error' ); |
fc7ec1d9 |
264 | |
b5ecfcf0 |
265 | =head2 is_debug |
a2f2cde9 |
266 | |
b5ecfcf0 |
267 | =head2 is_error |
a2f2cde9 |
268 | |
b5ecfcf0 |
269 | =head2 is_fatal |
a2f2cde9 |
270 | |
b5ecfcf0 |
271 | =head2 is_info |
a2f2cde9 |
272 | |
b5ecfcf0 |
273 | =head2 is_warn |
49ba64d7 |
274 | |
275 | Is the log level active? |
276 | |
b5ecfcf0 |
277 | =head2 abort |
4be535b1 |
278 | |
eaae9a92 |
279 | Should Catalyst emit logs for this request? Will be reset at the end of |
280 | each request. |
4be535b1 |
281 | |
282 | *NOTE* This method is not compatible with other log apis, so if you plan |
283 | to use Log4Perl or another logger, you should call it like this: |
284 | |
285 | $c->log->abort(1) if $c->log->can('abort'); |
286 | |
adee716c |
287 | =head2 _send_to_log |
288 | |
289 | $log->_send_to_log( @messages ); |
290 | |
291 | This protected method is what actually sends the log information to STDERR. |
292 | You may subclass this module and override this method to get finer control |
293 | over the log output. |
294 | |
d298046a |
295 | =head2 psgienv $env |
296 | |
297 | $log->psgienv($env); |
298 | |
299 | NOTE: This is not meant for public consumption. |
300 | |
301 | Set the PSGI environment for this request. This ensures logs will be sent to |
302 | the right place. If the environment has a C<psgix.logger>, it will be used. If |
303 | not, we will send logs to C<psgi.errors> if that exists. As a last fallback, we |
304 | will send to STDERR as before. |
305 | |
a273dd58 |
306 | =head2 clear_psgi |
307 | |
308 | Clears the PSGI environment attributes set by L</psgienv>. |
309 | |
3cdcf968 |
310 | =head2 meta |
311 | |
fc7ec1d9 |
312 | =head1 SEE ALSO |
313 | |
314 | L<Catalyst>. |
315 | |
2f381252 |
316 | =head1 AUTHORS |
fc7ec1d9 |
317 | |
2f381252 |
318 | Catalyst Contributors, see Catalyst.pm |
fc7ec1d9 |
319 | |
320 | =head1 COPYRIGHT |
321 | |
536bee89 |
322 | This library is free software. You can redistribute it and/or modify |
61b1e958 |
323 | it under the same terms as Perl itself. |
fc7ec1d9 |
324 | |
325 | =cut |
326 | |
e5ecd5bc |
327 | __PACKAGE__->meta->make_immutable; |
328 | |
fc7ec1d9 |
329 | 1; |