| 1 |
## ------------------------------------------------------------------------ |
| 2 |
## $Id: Logger.pm,v 1.4 2003/03/29 07:16:00 joko Exp $ |
| 3 |
## ------------------------------------------------------------------------ |
| 4 |
## $Log: Logger.pm,v $ |
| 5 |
## Revision 1.4 2003/03/29 07:16:00 joko |
| 6 |
## minor update: changed default log-file-name to 'perl_app.log' |
| 7 |
## |
| 8 |
## Revision 1.3 2003/03/28 07:23:25 joko |
| 9 |
## fix to basepath calculation |
| 10 |
## |
| 11 |
## Revision 1.2 2003/02/20 21:06:27 joko |
| 12 |
## + configurable by package globals |
| 13 |
## + standalone mode (object creation via 'new') |
| 14 |
## + some comments |
| 15 |
## + Log::Dispatch gets configured inside here now |
| 16 |
## + coordinated stack tracing |
| 17 |
## + convenient shortcut methods resembling the syslog levels |
| 18 |
## |
| 19 |
## Revision 1.1 2003/02/19 00:34:52 joko |
| 20 |
## + initial commit, again refactored to this place |
| 21 |
## |
| 22 |
## Revision 1.3 2003/02/18 18:33:59 joko |
| 23 |
## + fix: just logs if possible |
| 24 |
## |
| 25 |
## Revision 1.2 2003/02/18 16:37:22 joko |
| 26 |
## + fix: ...::Hardwired is an optional module |
| 27 |
## |
| 28 |
## Revision 1.1 2003/02/18 15:57:34 joko |
| 29 |
## + initial commit, refactored from DesignPattern::Object::Logger |
| 30 |
## |
| 31 |
## Revision 1.2 2003/02/14 14:20:42 joko |
| 32 |
## + decreased default log-level to debug |
| 33 |
## |
| 34 |
## Revision 1.1 2002/12/22 14:17:38 joko |
| 35 |
## + initial check-in, refactored |
| 36 |
## |
| 37 |
## Revision 1.1 2002/12/19 01:14:48 cvsjoko |
| 38 |
## + initial check-in |
| 39 |
## |
| 40 |
## ------------------------------------------------------------------------ |
| 41 |
|
| 42 |
|
| 43 |
package DesignPattern::Logger; |
| 44 |
|
| 45 |
use strict; |
| 46 |
use warnings; |
| 47 |
|
| 48 |
use Data::Dumper; |
| 49 |
use Log::Dispatch; |
| 50 |
use Log::Dispatch::Screen; |
| 51 |
use Log::Dispatch::Config; |
| 52 |
use Cwd; |
| 53 |
use DesignPattern::Object; |
| 54 |
|
| 55 |
use vars qw( |
| 56 |
$LEVEL_DEFAULT |
| 57 |
$ENABLE_NAMESPACE |
| 58 |
$NAMESPACE_LEVEL |
| 59 |
$ENABLE_METHODS |
| 60 |
$METHOD_LEVELS |
| 61 |
$TRACE_STACK_LEVELS |
| 62 |
); |
| 63 |
|
| 64 |
# default behaviour |
| 65 |
$LEVEL_DEFAULT = 'debug'; |
| 66 |
$ENABLE_NAMESPACE = 1; |
| 67 |
$NAMESPACE_LEVEL = undef; |
| 68 |
$ENABLE_METHODS = 0; |
| 69 |
$METHOD_LEVELS = [3]; |
| 70 |
$TRACE_STACK_LEVELS = []; |
| 71 |
|
| 72 |
|
| 73 |
# TODO: review, revise and rewire this! |
| 74 |
#my $logger = Log::Dispatch::Config->instance; |
| 75 |
|
| 76 |
sub __init { |
| 77 |
my $self = shift; |
| 78 |
my $action = shift; |
| 79 |
my $message = shift; |
| 80 |
#my $options = shift; # ??? or: $self->{__logger}->{options} already...? |
| 81 |
|
| 82 |
# configure |
| 83 |
if (!$self->{__logger}->{configured}) { |
| 84 |
$self->{__logger}->{configured} = 1; |
| 85 |
$self->_configure_LogDispatch(); |
| 86 |
} |
| 87 |
|
| 88 |
# set passed-in arguments |
| 89 |
$self->{__logger}->{action} = $action; |
| 90 |
$self->{__logger}->{message} = $message; |
| 91 |
|
| 92 |
# trace |
| 93 |
#my $tmp = caller(2); |
| 94 |
#print Dumper($tmp); |
| 95 |
#exit; |
| 96 |
|
| 97 |
|
| 98 |
# handle caller |
| 99 |
|
| 100 |
# determine class- and subroutinename of context calling us |
| 101 |
# this task can be controlled by tuning its behaviour |
| 102 |
# this can be changed by setting |
| 103 |
# DesignPattern::Logger::... |
| 104 |
# ... |
| 105 |
# ... |
| 106 |
my $calling_class; |
| 107 |
my $calling_sub; |
| 108 |
|
| 109 |
|
| 110 |
# Default behaviour is: |
| 111 |
# Use classname from $self and suppress subroutine name. |
| 112 |
# In case of using this together with DesignPattern::Bridge, |
| 113 |
# the classnames of child objects are suppressed. |
| 114 |
# Instead, the classname of the parent container object |
| 115 |
# gets used *always*. |
| 116 |
$calling_class = ''; |
| 117 |
$calling_sub = ''; |
| 118 |
|
| 119 |
# Log class names (en-/disabled, take from specified level) |
| 120 |
if ($ENABLE_NAMESPACE) { |
| 121 |
$calling_class = ref $self; |
| 122 |
if ($NAMESPACE_LEVEL) { |
| 123 |
my @entry = caller($NAMESPACE_LEVEL); |
| 124 |
$calling_class = $entry[0]; |
| 125 |
} |
| 126 |
} |
| 127 |
|
| 128 |
# Log method names (en-/disabled, multi-level) |
| 129 |
if ($ENABLE_METHODS) { |
| 130 |
my @methods; |
| 131 |
foreach (@{$METHOD_LEVELS}) { |
| 132 |
(my $c_package, my $c_filename, my $c_line, my $c_subroutine, my $c_hasargs, |
| 133 |
my $c_wantarray, my $c_evaltext, my $c_is_require, my $c_hints, my $c_bitmask) = caller($_); |
| 134 |
$c_subroutine =~ s/.*:://; |
| 135 |
push @methods, $c_subroutine; |
| 136 |
} |
| 137 |
$calling_sub = join(': ', @methods); |
| 138 |
} |
| 139 |
|
| 140 |
|
| 141 |
|
| 142 |
# set default arguments |
| 143 |
$self->{__logger}->{classname} = $calling_class; |
| 144 |
$self->{__logger}->{functionname} = $calling_sub; |
| 145 |
# FIXME: deprecate this! |
| 146 |
$self->{__logger}->{caller} = caller; |
| 147 |
|
| 148 |
# set default values |
| 149 |
$self->{__logger}->{action} ||= ''; |
| 150 |
$self->{__logger}->{options}->{tag} ||= ''; |
| 151 |
|
| 152 |
# FIXME: deprecate this! |
| 153 |
#$self->{__logger}->{level} ||= 'info'; |
| 154 |
#$self->{__logger}->{level} ||= 'debug'; |
| 155 |
$self->{__logger}->{level} ||= $LEVEL_DEFAULT; |
| 156 |
|
| 157 |
# handle stacktrace |
| 158 |
foreach (@$TRACE_STACK_LEVELS) { |
| 159 |
#print "trace-level: ", $_, "\n"; |
| 160 |
#(my $c_package, my $c_filename, my $c_line, my $c_subroutine, my $c_hasargs, |
| 161 |
#my $c_wantarray, my $c_evaltext, my $c_is_require, my $c_hints, my $c_bitmask) = caller($_); |
| 162 |
my @entry = caller($_); |
| 163 |
push @{$self->{__logger}->{trace}->{stack}}, \@entry; |
| 164 |
} |
| 165 |
|
| 166 |
} |
| 167 |
|
| 168 |
sub __out { |
| 169 |
my $self = shift; |
| 170 |
my $message = shift; |
| 171 |
|
| 172 |
# if message given here, append to message stored inside object |
| 173 |
$self->{__logger}->{message} .= ' - ' . $message if $message; |
| 174 |
|
| 175 |
# TODO: refactor this: |
| 176 |
# - push '$self->__get_prefix()' to additional log-entry-metadata, don't show it on/in any console/logfile output |
| 177 |
#$logger->log( level => $self->{__logger}->{level}, message => $self->__get_prefix_long() . $message ); |
| 178 |
#$logger->log( level => $self->{__logger}->{level}, message => $message ); |
| 179 |
#$logger->warning( __PACKAGE__ . "->_skip: '$caller' (mixed into '$classname'): ($options->{tag}) $message."); |
| 180 |
#$self->{__logger}->{instance}->log( level => $self->{__logger}->{level}, message => $self->__get_prefix_short() . $self->{__logger}->{message} ); |
| 181 |
#$self->{__logger}->{instance}->log( level => $self->{__logger}->{level}, message => $self->__get_prefix_module() . $self->{__logger}->{message} ); |
| 182 |
$self->{__logger}->{instance}->log( level => $self->{__logger}->{level}, message => $self->__get_prefix_best() . $self->{__logger}->{message} ); |
| 183 |
} |
| 184 |
|
| 185 |
|
| 186 |
sub __handle_options { |
| 187 |
my $self = shift; |
| 188 |
#my $options = shift; # ??? or: $self->{__logger}->{options} already...? |
| 189 |
} |
| 190 |
|
| 191 |
sub __get_prefix_long { |
| 192 |
my $self = shift; |
| 193 |
return __PACKAGE__ . "->$self->{__logger}->{action}: '$self->{__logger}->{caller}' (mixed into '$self->{__logger}->{classname}'): ($self->{__logger}->{options}->{tag}) - "; |
| 194 |
} |
| 195 |
|
| 196 |
sub __get_prefix_short { |
| 197 |
my $self = shift; |
| 198 |
my $tag_append = ''; |
| 199 |
$tag_append = "$self->{__logger}->{options}->{tag} - " if $self->{__logger}->{options}->{tag}; |
| 200 |
return $self->{__logger}->{classname} . "->$self->{__logger}->{action}: $tag_append"; |
| 201 |
} |
| 202 |
|
| 203 |
sub __get_prefix_module { |
| 204 |
my $self = shift; |
| 205 |
my $tag_append = ''; |
| 206 |
$tag_append = "$self->{__logger}->{options}->{tag} - " if $self->{__logger}->{options}->{tag}; |
| 207 |
return $self->{__logger}->{classname} . ": $tag_append"; |
| 208 |
} |
| 209 |
|
| 210 |
|
| 211 |
sub __get_prefix_best { |
| 212 |
my $self = shift; |
| 213 |
my $namespace = $self->{__logger}->{classname}; |
| 214 |
my $method = ''; |
| 215 |
my $tag_append = ''; |
| 216 |
#$namespace = $namespace . ": " if $namespace; |
| 217 |
$method = "->" . $self->{__logger}->{functionname} if $self->{__logger}->{functionname}; |
| 218 |
#$method .= ': ' if $method; |
| 219 |
$tag_append = "$self->{__logger}->{options}->{tag} - " if $self->{__logger}->{options}->{tag}; |
| 220 |
|
| 221 |
my @line; |
| 222 |
push @line, $namespace if $namespace; |
| 223 |
push @line, $method if $method; |
| 224 |
push @line, $tag_append if $tag_append; |
| 225 |
|
| 226 |
#print Dumper(@line); |
| 227 |
|
| 228 |
#return join(': ', @line); |
| 229 |
my $result = join('', @line); |
| 230 |
$result .= ': ' if $result; |
| 231 |
|
| 232 |
return $result; |
| 233 |
|
| 234 |
} |
| 235 |
|
| 236 |
|
| 237 |
sub log { |
| 238 |
my $self = shift; |
| 239 |
my $message = shift; |
| 240 |
|
| 241 |
# automagically instantiate the object if not there |
| 242 |
# TODO: do this by creating a dummy object inheriting from DesignPattern::Logger, |
| 243 |
# for now this just don't work because which dummy one to take: Data::Code::Null? |
| 244 |
#if (! ref $self) { |
| 245 |
# $self = DesignPattern::Object->fromPackage('DesignPattern::Logger'); |
| 246 |
#} |
| 247 |
|
| 248 |
$self->{__logger}->{level} = shift; # TODO: implement propagation of this into Log::Dispatch-object '$logger'! |
| 249 |
$self->{__logger}->{options} = shift; # TODO: implement additional behaviours: e.g. { exit => 1 } would exit after tracedump |
| 250 |
|
| 251 |
#$self->__init('log', $message); |
| 252 |
$self->__init('log', $message); |
| 253 |
$self->__out(); |
| 254 |
|
| 255 |
} |
| 256 |
|
| 257 |
sub skip { |
| 258 |
my $self = shift; |
| 259 |
my $message = shift; |
| 260 |
my $condition = shift; |
| 261 |
$self->{__logger}->{level} = shift; # TODO: implement propagation of this into Log::Dispatch-object '$logger'! |
| 262 |
$self->{__logger}->{options} = shift; # TODO: implement additional behaviours: e.g. { exit => 1 } would exit after tracedump |
| 263 |
|
| 264 |
my $classname = ref $self; |
| 265 |
my $caller = caller; |
| 266 |
|
| 267 |
$self->{__logger}->{options}->{tag} ||= ''; |
| 268 |
|
| 269 |
if ($condition) { |
| 270 |
# V1: |
| 271 |
#$logger->warning( __PACKAGE__ . "->_skip: '$caller' (mixed into '$classname'): ($options->{tag}) $message."); |
| 272 |
# V2: |
| 273 |
$self->__init('skip', $message); |
| 274 |
$self->__out(); |
| 275 |
return 1; |
| 276 |
} |
| 277 |
} |
| 278 |
|
| 279 |
sub trace { |
| 280 |
my $self = shift; |
| 281 |
my $message = shift; |
| 282 |
my $data = shift; |
| 283 |
my $condition = shift; |
| 284 |
$self->{__logger}->{level} = shift; # TODO: implement propagation of this into Log::Dispatch-object '$logger'! |
| 285 |
$self->{__logger}->{options} = shift; # TODO: implement additional behaviours: e.g. { exit => 1 } would exit after tracedump |
| 286 |
|
| 287 |
my $classname = ref $self; |
| 288 |
my $caller = caller; |
| 289 |
|
| 290 |
$self->{__logger}->{options}->{tag} ||= ''; |
| 291 |
|
| 292 |
# don't do _any_ tracing if disabled |
| 293 |
return if $self->{TRACE_DISABLED}; |
| 294 |
|
| 295 |
# overwrite condition with local configured want-TRACE |
| 296 |
$condition ||= $self->{TRACE}; |
| 297 |
|
| 298 |
# dump data |
| 299 |
my $result = 0; |
| 300 |
if ($condition) { |
| 301 |
$message .= " - " . Dumper($data); |
| 302 |
|
| 303 |
# V1: |
| 304 |
# $self->__init('trace'); |
| 305 |
# $logger->info( __PACKAGE__ . "->trace: '$caller' (mixed into '$classname'): ($options->{tag}) $message."); |
| 306 |
|
| 307 |
# V2: |
| 308 |
$self->__init('trace', $message); |
| 309 |
$self->__out(); |
| 310 |
|
| 311 |
$result = 1; |
| 312 |
} else { |
| 313 |
$result = 0; |
| 314 |
} |
| 315 |
|
| 316 |
# handle additional options |
| 317 |
if ($self->{TRACE_OPTIONS}) { |
| 318 |
exit if $self->{__logger}->{options}->{exit}; |
| 319 |
} |
| 320 |
|
| 321 |
return $result; |
| 322 |
} |
| 323 |
|
| 324 |
|
| 325 |
sub _configure_LogDispatch { |
| 326 |
my $self = shift; |
| 327 |
|
| 328 |
my $configurator = DesignPattern::Object->fromPackage('Log::Dispatch::Configurator::Hardwired'); |
| 329 |
|
| 330 |
# check if running inside a 'PROJECT' space |
| 331 |
my $basepath = cwd(); |
| 332 |
my $postpone = '/..'; |
| 333 |
if (-d $basepath . $postpone . '/PROJECT') { |
| 334 |
$basepath .= $postpone; |
| 335 |
$basepath .= "/var/log"; |
| 336 |
} |
| 337 |
|
| 338 |
# configure custom logHandler |
| 339 |
|
| 340 |
if ($configurator) { |
| 341 |
|
| 342 |
$configurator->{file_filename} = "$basepath/perl_app.log"; |
| 343 |
$configurator->{screen_min_level} = 'info'; |
| 344 |
|
| 345 |
if ($self->{quiet}) { |
| 346 |
$configurator->{screen_min_level} = 8; |
| 347 |
} |
| 348 |
|
| 349 |
if ($self->{debug}) { |
| 350 |
$configurator->{screen_min_level} = 'debug'; |
| 351 |
} |
| 352 |
|
| 353 |
if ($self->{LOG_VERBOSE}) { |
| 354 |
$configurator->{verbose} = 1; |
| 355 |
} |
| 356 |
|
| 357 |
Log::Dispatch::Config->configure($configurator); |
| 358 |
$self->{__logger}->{instance} = Log::Dispatch::Config->instance; |
| 359 |
|
| 360 |
} else { |
| 361 |
|
| 362 |
#Log::Dispatch::Config->configure(); |
| 363 |
#Log::Dispatch->configure(); |
| 364 |
#$self->{__logger}->{instance} = Log::Dispatch->new; |
| 365 |
$self->{__logger}->{instance} = Log::Dispatch::Screen->new( name => 'screen', 'min_level' => 'debug', stderr => 1 ); |
| 366 |
|
| 367 |
} |
| 368 |
|
| 369 |
|
| 370 |
} |
| 371 |
|
| 372 |
sub configure_logger { |
| 373 |
my $self = shift; |
| 374 |
|
| 375 |
# automagically instantiate the object if not there |
| 376 |
# TODO: do this by creating a dummy object inheriting from DesignPattern::Logger, |
| 377 |
# for now this just don't work because which dummy one to take: Data::Code::Null? |
| 378 |
if (! ref $self) { |
| 379 |
$self = DesignPattern::Object->fromPackage('DesignPattern::Logger'); |
| 380 |
} |
| 381 |
|
| 382 |
#print "logconfig\n"; |
| 383 |
$self->_configure_LogDispatch(); |
| 384 |
} |
| 385 |
|
| 386 |
|
| 387 |
|
| 388 |
# for standalone use |
| 389 |
sub new { my $class = shift; my $self = {}; bless $self, $class; } |
| 390 |
|
| 391 |
# convenient shortcuts |
| 392 |
# FIXME: create these automagically by mungling with symbolic references |
| 393 |
# or: make this object tied to recieve kinda events on method calls |
| 394 |
|
| 395 |
sub debug { |
| 396 |
my $self = shift; |
| 397 |
my $message = shift; |
| 398 |
$self->log($message, 'debug'); |
| 399 |
} |
| 400 |
|
| 401 |
sub warning { |
| 402 |
my $self = shift; |
| 403 |
my $message = shift; |
| 404 |
$self->log($message, 'warning'); |
| 405 |
} |
| 406 |
|
| 407 |
sub info { |
| 408 |
my $self = shift; |
| 409 |
my $message = shift; |
| 410 |
$self->log($message, 'info'); |
| 411 |
} |
| 412 |
|
| 413 |
sub notice { |
| 414 |
my $self = shift; |
| 415 |
my $message = shift; |
| 416 |
$self->log($message, 'notice'); |
| 417 |
} |
| 418 |
|
| 419 |
|
| 420 |
|
| 421 |
=pod |
| 422 |
|
| 423 |
=head1 TODO |
| 424 |
|
| 425 |
o $TRACE_STACK_LEVELS (traces stack history) |
| 426 |
o $ENABLE_DEBUG (en-/disables level 'debug') |
| 427 |
o $ENABLE_LOG (en-/disables logging completely) |
| 428 |
|
| 429 |
|
| 430 |
=cut |
| 431 |
|
| 432 |
|
| 433 |
1; |
| 434 |
__END__ |
Parent Directory
| 
Revision Log
