/[webpac2]/trunk/lib/WebPAC/Common.pm
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revision 16 by dpavlin, Sun Jul 17 11:37:07 2005 UTC revision 633 by dpavlin, Wed Sep 6 18:08:04 2006 UTC
# Line 6  use strict; Line 6  use strict;
6  use Log::Log4perl qw/get_logger :levels/;  use Log::Log4perl qw/get_logger :levels/;
7  use Time::HiRes qw/time/;  use Time::HiRes qw/time/;
8    
9    # If ture, enable logging debug
10    my $log_debug = 0;
11    
12  =head1 NAME  =head1 NAME
13    
14  WebPAC::Common - internal methods called from other WebPAC modules  WebPAC::Common - internal methods called from other WebPAC modules
15    
16  =head1 VERSION  =head1 VERSION
17    
18  Version 0.01  Version 0.03
19    
20  =cut  =cut
21    
22  our $VERSION = '0.01';  our $VERSION = '0.03';
23    
24  =head1 SYNOPSYS  =head1 SYNOPSYS
25    
# Line 139  If no path to configuration file is give Line 142  If no path to configuration file is give
142  will be created. If any mode which inherits from this one is called  will be created. If any mode which inherits from this one is called
143  with C<debug> flag, it will turn logging to debug level.  with C<debug> flag, it will turn logging to debug level.
144    
145    This function will also read C<log_conf> value from current object and try
146    to read that as configuration file if it exists, if it doesn't it will
147    fallback to default C<conf/log.conf>.
148    
149    You can disable all logging by adding C<no_log> to constructor of WebPAC
150    object. Object in C<Test::Exception> class will disable logging
151    automatically.
152    
153  =cut  =cut
154    
155  sub _init_logger {  sub _init_logger {
156          my $self = shift;          my $self = shift;
157          my $file = shift;          my $file = shift;
158          if ($file) {          $file ||= $self->{'log_conf'};
159                  Log::Log4perl->init($file);          $file = 'conf/log.conf';
160          } else {          my $name = (caller(2))[3] || caller;
161                  my $conf = q( );  
162                  if ($self->{'debug'}) {          my $conf = q( );
163                          $conf = << '_log4perl_';          if ($self->{'no_log'}) {
164                    warn "# $name disabled logging\n" if ($log_debug);
165            } elsif ($self->{'debug'}) {
166                    $conf = << '_log4perl_';
167    
168  log4perl.rootLogger=INFO, SCREEN  log4perl.rootLogger=INFO, SCREEN
169    
# Line 160  log4perl.appender.SCREEN.layout=PatternL Line 174  log4perl.appender.SCREEN.layout=PatternL
174  log4perl.appender.SCREEN.layout.ConversionPattern=%d %p> %F{1}:%L %M - %m%n  log4perl.appender.SCREEN.layout.ConversionPattern=%d %p> %F{1}:%L %M - %m%n
175    
176  _log4perl_  _log4perl_
177                  }                  warn "# $name is using debug logger\n" if ($log_debug);
178                  Log::Log4perl->init( \$conf );          } elsif ($name =~ m/Test::Exception/o) {
179                    warn "# disabled logging for Text::Exception\n" if ($log_debug);
180            } elsif (-e $file) {
181                    warn "# $name is using $file logger\n" if ($log_debug);
182                    Log::Log4perl->init($file);
183                    return 1;
184            } else {
185                    warn "# $name is using null logger\n" if ($log_debug);
186          }          }
187            Log::Log4perl->init( \$conf );
188    
189            return 1;
190  }  }
191    
192    
# Line 175  method Line 199  method
199    
200  =cut  =cut
201    
202    my $_logger_seen;
203    
204  sub _get_logger {  sub _get_logger {
205          my $self = shift;          my $self = shift;
206    
         $self->{'_logger_ok'} ||= $self->_init_logger;  
   
207          my $name = (caller(1))[3] || caller;          my $name = (caller(1))[3] || caller;
208          return get_logger($name);  
209            # make name full
210            my $f = '';
211            if ($log_debug) {
212                    foreach ( 0 .. 5 ) {
213                            my $s = (caller($_))[3];
214                            $f .= "#### $_ >> $s\n" if ($s);
215                    }
216            }
217    
218            $self->{'_logger_'} ||= $self->_init_logger;
219    
220            my $log = get_logger( $name );
221            warn "# get_logger( $name ) level ", $log->level, "\n$f" if ($log_debug && !defined($_logger_seen->{$name}));
222            $_logger_seen->{$name}++;
223            return $log;
224  }  }
225    
226    
227    =head2 _log
228    
229    Quick cludge to make logging object available to scripts which
230    use webpac line this:
231    
232      my $log = _new WebPAC::Common()->_get_logger();
233    
234    =cut
235    
236    sub _new {
237            my $class = shift;
238            my $self = {@_};
239            bless($self, $class);
240    
241            $self ? return $self : return undef;
242    }
243    
244  =head1 LOGGING  =head1 LOGGING
245    
246  Logging in WebPAC is performed by L<Log::Log4perl> with config file  Logging in WebPAC is performed by L<Log::Log4perl> with config file
# Line 199  B<This is different from normal Log4perl Line 255  B<This is different from normal Log4perl
255  also use method names, and not only classes (which are just few)  also use method names, and not only classes (which are just few)
256  to filter logging.  to filter logging.
257    
258    =cut
259    
260    1;
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