9 |
use XML::Simple; |
use XML::Simple; |
10 |
use Template; |
use Template; |
11 |
use Log::Log4perl qw(get_logger :levels); |
use Log::Log4perl qw(get_logger :levels); |
12 |
|
use Time::HiRes qw(time); |
13 |
|
|
14 |
use Data::Dumper; |
use Data::Dumper; |
15 |
|
|
30 |
|
|
31 |
=head2 new |
=head2 new |
32 |
|
|
33 |
This will create new instance of WebPAC using configuration specified by C<config_file>. |
Create new instance of WebPAC using configuration specified by C<config_file>. |
34 |
|
|
35 |
my $webpac = new WebPAC( |
my $webpac = new WebPAC( |
36 |
config_file => 'name.conf', |
config_file => 'name.conf', |
37 |
[code_page => 'ISO-8859-2',] |
code_page => 'ISO-8859-2', |
38 |
|
low_mem => 1, |
39 |
|
filter => { |
40 |
|
'lower' => sub { lc($_[0]) }, |
41 |
|
}, |
42 |
); |
); |
43 |
|
|
44 |
Default C<code_page> is C<ISO-8859-2>. |
Default C<code_page> is C<ISO-8859-2>. |
45 |
|
|
46 |
It will also read configuration files |
Default is not to use C<low_mem> options (see L<MEMORY USAGE> below). |
47 |
|
|
48 |
|
There is optinal parametar C<filter> which specify different filters which |
49 |
|
can be applied using C<filter{name}> notation. |
50 |
|
|
51 |
|
This method will also read configuration files |
52 |
C<global.conf> (used by indexer and Web font-end) |
C<global.conf> (used by indexer and Web font-end) |
53 |
and configuration file specified by C<config_file> |
and configuration file specified by C<config_file> |
54 |
which describes databases to be indexed. |
which describes databases to be indexed. |
69 |
my $self = {@_}; |
my $self = {@_}; |
70 |
bless($self, $class); |
bless($self, $class); |
71 |
|
|
72 |
|
$self->{'start_t'} = time(); |
73 |
|
|
74 |
my $log_file = $self->{'log'} || "log.conf"; |
my $log_file = $self->{'log'} || "log.conf"; |
75 |
Log::Log4perl->init($log_file); |
Log::Log4perl->init($log_file); |
76 |
|
|
118 |
EVAL_PERL => 1, |
EVAL_PERL => 1, |
119 |
); |
); |
120 |
|
|
121 |
|
# running with low_mem flag? well, use DBM::Deep then. |
122 |
|
if ($self->{'low_mem'}) { |
123 |
|
$log->info("running with low_mem which impacts performance (<32 Mb memory usage)"); |
124 |
|
|
125 |
|
my $db_file = "data.db"; |
126 |
|
|
127 |
|
if (-e $db_file) { |
128 |
|
unlink $db_file or $log->logdie("can't remove '$db_file' from last run"); |
129 |
|
$log->debug("removed '$db_file' from last run"); |
130 |
|
} |
131 |
|
|
132 |
|
require DBM::Deep; |
133 |
|
|
134 |
|
my $db = new DBM::Deep $db_file; |
135 |
|
|
136 |
|
$log->logdie("DBM::Deep error: $!") unless ($db); |
137 |
|
|
138 |
|
if ($db->error()) { |
139 |
|
$log->logdie("can't open '$db_file' under low_mem: ",$db->error()); |
140 |
|
} else { |
141 |
|
$log->debug("using file '$db_file' for DBM::Deep"); |
142 |
|
} |
143 |
|
|
144 |
|
$self->{'db'} = $db; |
145 |
|
} |
146 |
|
|
147 |
|
$log->debug("filters defined: ",Dumper($self->{'filter'})); |
148 |
|
|
149 |
return $self; |
return $self; |
150 |
} |
} |
151 |
|
|
156 |
$webpac->open_isis( |
$webpac->open_isis( |
157 |
filename => '/data/ISIS/ISIS', |
filename => '/data/ISIS/ISIS', |
158 |
code_page => '852', |
code_page => '852', |
159 |
limit_mfn => '500', |
limit_mfn => 500, |
160 |
|
start_mfn => 6000, |
161 |
lookup => [ ... ], |
lookup => [ ... ], |
162 |
); |
); |
163 |
|
|
164 |
By default, ISIS code page is assumed to be C<852>. |
By default, ISIS code page is assumed to be C<852>. |
165 |
|
|
166 |
|
If optional parametar C<start_mfn> is set, this will be first MFN to read |
167 |
|
from database (so you can skip beginning of your database if you need to). |
168 |
|
|
169 |
If optional parametar C<limit_mfn> is set, it will read just 500 records |
If optional parametar C<limit_mfn> is set, it will read just 500 records |
170 |
from database in example above. |
from database in example above. |
171 |
|
|
193 |
$log->logcroak("need filename") if (! $arg->{'filename'}); |
$log->logcroak("need filename") if (! $arg->{'filename'}); |
194 |
my $code_page = $arg->{'code_page'} || '852'; |
my $code_page = $arg->{'code_page'} || '852'; |
195 |
|
|
196 |
|
$log->logdie("can't find database ",$arg->{'filename'}) unless (glob($arg->{'filename'}.'.*')); |
197 |
|
|
198 |
|
# store data in object |
199 |
|
$self->{'isis_filename'} = $arg->{'filename'}; |
200 |
|
$self->{'isis_code_page'} = $code_page; |
201 |
|
|
202 |
use OpenIsis; |
use OpenIsis; |
203 |
|
|
204 |
#$self->{'isis_code_page'} = $code_page; |
#$self->{'isis_code_page'} = $code_page; |
207 |
my $cp = Text::Iconv->new($code_page,$self->{'code_page'}); |
my $cp = Text::Iconv->new($code_page,$self->{'code_page'}); |
208 |
|
|
209 |
$log->info("reading ISIS database '",$arg->{'filename'},"'"); |
$log->info("reading ISIS database '",$arg->{'filename'},"'"); |
210 |
|
$log->debug("isis code page: $code_page"); |
211 |
|
|
212 |
my $isis_db = OpenIsis::open($arg->{'filename'}); |
my $isis_db = OpenIsis::open($arg->{'filename'}); |
213 |
|
|
214 |
my $maxmfn = OpenIsis::maxRowid( $isis_db ) || 1; |
my $maxmfn = OpenIsis::maxRowid( $isis_db ) || 1; |
215 |
|
my $startmfn = 1; |
216 |
|
|
217 |
|
if (my $s = $self->{'start_mfn'}) { |
218 |
|
$log->info("skipping to MFN $s"); |
219 |
|
$startmfn = $s; |
220 |
|
} else { |
221 |
|
$self->{'start_mfn'} = $startmfn; |
222 |
|
} |
223 |
|
|
224 |
$maxmfn = $self->{limit_mfn} if ($self->{limit_mfn}); |
$maxmfn = $startmfn + $self->{limit_mfn} if ($self->{limit_mfn}); |
225 |
|
|
226 |
$log->info("processing $maxmfn records..."); |
$log->info("processing ",($maxmfn-$startmfn)." records..."); |
227 |
|
|
228 |
# read database |
# read database |
229 |
for (my $mfn = 1; $mfn <= $maxmfn; $mfn++) { |
for (my $mfn = $startmfn; $mfn <= $maxmfn; $mfn++) { |
230 |
|
|
231 |
|
|
232 |
|
$log->debug("mfn: $mfn\n"); |
233 |
|
|
234 |
|
my $rec; |
235 |
|
|
236 |
# read record |
# read record |
237 |
my $row = OpenIsis::read( $isis_db, $mfn ); |
my $row = OpenIsis::read( $isis_db, $mfn ); |
250 |
$val = $l; |
$val = $l; |
251 |
} |
} |
252 |
|
|
253 |
push @{$self->{'data'}->{$mfn}->{$k}}, $val; |
push @{$rec->{$k}}, $val; |
254 |
} |
} |
255 |
} else { |
} else { |
256 |
push @{$self->{'data'}->{$mfn}->{'000'}}, $mfn; |
push @{$rec->{'000'}}, $mfn; |
257 |
} |
} |
258 |
|
|
259 |
} |
} |
260 |
|
|
261 |
|
$log->confess("record $mfn empty?") unless ($rec); |
262 |
|
|
263 |
|
# store |
264 |
|
if ($self->{'low_mem'}) { |
265 |
|
$self->{'db'}->put($mfn, $rec); |
266 |
|
} else { |
267 |
|
$self->{'data'}->{$mfn} = $rec; |
268 |
|
} |
269 |
|
|
270 |
# create lookup |
# create lookup |
|
my $rec = $self->{'data'}->{$mfn}; |
|
271 |
$self->create_lookup($rec, @{$arg->{'lookup'}}); |
$self->create_lookup($rec, @{$arg->{'lookup'}}); |
272 |
|
|
273 |
$self->progress_bar($mfn,$maxmfn); |
$self->progress_bar($mfn,$maxmfn); |
274 |
|
|
275 |
} |
} |
276 |
|
|
277 |
$self->{'current_mfn'} = 1; |
$self->{'current_mfn'} = -1; |
278 |
$self->{'last_pcnt'} = 0; |
$self->{'last_pcnt'} = 0; |
279 |
|
|
280 |
|
$log->debug("max mfn: $maxmfn"); |
281 |
|
|
282 |
# store max mfn and return it. |
# store max mfn and return it. |
283 |
return $self->{'max_mfn'} = $maxmfn; |
return $self->{'max_mfn'} = $maxmfn; |
284 |
} |
} |
297 |
|
|
298 |
my $log = $self->_get_logger(); |
my $log = $self->_get_logger(); |
299 |
|
|
300 |
my $mfn = $self->{'current_mfn'}++ || $log->logconfess("it seems that you didn't load database!"); |
$log->logconfess("it seems that you didn't load database!") unless ($self->{'current_mfn'}); |
301 |
|
|
302 |
|
if ($self->{'current_mfn'} == -1) { |
303 |
|
$self->{'current_mfn'} = $self->{'start_mfn'}; |
304 |
|
} else { |
305 |
|
$self->{'current_mfn'}++; |
306 |
|
} |
307 |
|
|
308 |
|
my $mfn = $self->{'current_mfn'}; |
309 |
|
|
310 |
if ($mfn > $self->{'max_mfn'}) { |
if ($mfn > $self->{'max_mfn'}) { |
311 |
$self->{'current_mfn'} = $self->{'max_mfn'}; |
$self->{'current_mfn'} = $self->{'max_mfn'}; |
315 |
|
|
316 |
$self->progress_bar($mfn,$self->{'max_mfn'}); |
$self->progress_bar($mfn,$self->{'max_mfn'}); |
317 |
|
|
318 |
return $self->{'data'}->{$mfn}; |
if ($self->{'low_mem'}) { |
319 |
|
return $self->{'db'}->get($mfn); |
320 |
|
} else { |
321 |
|
return $self->{'data'}->{$mfn}; |
322 |
|
} |
323 |
|
} |
324 |
|
|
325 |
|
=head2 mfn |
326 |
|
|
327 |
|
Returns current record number (MFN). |
328 |
|
|
329 |
|
print $webpac->mfn; |
330 |
|
|
331 |
|
=cut |
332 |
|
|
333 |
|
sub mfn { |
334 |
|
my $self = shift; |
335 |
|
return $self->{'current_mfn'}; |
336 |
} |
} |
337 |
|
|
338 |
=head2 progress_bar |
=head2 progress_bar |
360 |
|
|
361 |
$self->{'last_pcnt'} ||= 1; |
$self->{'last_pcnt'} ||= 1; |
362 |
|
|
363 |
$self->{'last_pcnt'} = $curr if ($curr < $self->{'last_pcnt'}); |
my $p = int($curr * 100 / $max) || 1; |
364 |
|
|
365 |
|
# reset on re-run |
366 |
|
if ($p < $self->{'last_pcnt'}) { |
367 |
|
$self->{'last_pcnt'} = $p; |
368 |
|
$self->{'last_t'} = time(); |
369 |
|
$self->{'last_curr'} = undef; |
370 |
|
} |
371 |
|
|
372 |
|
$self->{'last_t'} ||= time(); |
373 |
|
|
|
my $p = int($curr * 100 / $max); |
|
374 |
if ($p != $self->{'last_pcnt'}) { |
if ($p != $self->{'last_pcnt'}) { |
375 |
printf STDERR ("%5d / %5d [%-51s] %-2d %% \r",$curr,$max,"=" x ($p/2).">", $p ); |
|
376 |
|
my $last_curr = $self->{'last_curr'} || $curr; |
377 |
|
my $t = time(); |
378 |
|
my $rate = ($curr - $last_curr) / (($t - $self->{'last_t'} || 1)); |
379 |
|
my $eta = ($max-$curr) / ($rate || 1); |
380 |
|
printf STDERR ("%5d [%-38s] %-5d %0.1f/s %s\r",$curr,"=" x ($p/3)."$p%>", $max, $rate, $self->fmt_time($eta)); |
381 |
$self->{'last_pcnt'} = $p; |
$self->{'last_pcnt'} = $p; |
382 |
|
$self->{'last_t'} = time(); |
383 |
|
$self->{'last_curr'} = $curr; |
384 |
} |
} |
385 |
print STDERR "\n" if ($p == 100); |
print STDERR "\n" if ($p == 100); |
386 |
} |
} |
387 |
|
|
388 |
|
=head2 fmt_time |
389 |
|
|
390 |
|
Format time (in seconds) for display. |
391 |
|
|
392 |
|
print $webpac->fmt_time(time()); |
393 |
|
|
394 |
|
This method is called by L<progress_bar> to display remaining time. |
395 |
|
|
396 |
|
=cut |
397 |
|
|
398 |
|
sub fmt_time { |
399 |
|
my $self = shift; |
400 |
|
|
401 |
|
my $t = shift || 0; |
402 |
|
my $out = ""; |
403 |
|
|
404 |
|
my ($ss,$mm,$hh) = gmtime($t); |
405 |
|
$out .= "${hh}h" if ($hh); |
406 |
|
$out .= sprintf("%02d:%02d", $mm,$ss); |
407 |
|
$out .= " " if ($hh == 0); |
408 |
|
return $out; |
409 |
|
} |
410 |
|
|
411 |
=head2 open_import_xml |
=head2 open_import_xml |
412 |
|
|
413 |
Read file from C<import_xml/> directory and parse it. |
Read file from C<import_xml/> directory and parse it. |
467 |
$log->logconfess("need HASH as first argument!") if ($rec !~ /HASH/o); |
$log->logconfess("need HASH as first argument!") if ($rec !~ /HASH/o); |
468 |
|
|
469 |
foreach my $i (@_) { |
foreach my $i (@_) { |
470 |
if ($i->{'eval'}) { |
$log->logconfess("need key") unless defined($i->{'key'}); |
471 |
my $eval = $self->fill_in($rec,$i->{'eval'}); |
$log->logconfess("need val") unless defined($i->{'val'}); |
472 |
my $key = $self->fill_in($rec,$i->{'key'}); |
|
473 |
my @val = $self->fill_in($rec,$i->{'val'}); |
if (defined($i->{'eval'})) { |
474 |
if ($key && @val && eval $eval) { |
# eval first, so we can skip fill_in for key and val |
475 |
|
my $eval = $self->fill_in($rec,$i->{'eval'}) || next; |
476 |
|
if ($self->_eval($eval)) { |
477 |
|
my $key = $self->fill_in($rec,$i->{'key'}) || next; |
478 |
|
my @val = $self->fill_in($rec,$i->{'val'}) || next; |
479 |
$log->debug("stored $key = ",sub { join(" | ",@val) }); |
$log->debug("stored $key = ",sub { join(" | ",@val) }); |
480 |
push @{$self->{'lookup'}->{$key}}, @val; |
push @{$self->{'lookup'}->{$key}}, @val; |
481 |
} |
} |
482 |
} else { |
} else { |
483 |
my $key = $self->fill_in($rec,$i->{'key'}); |
my $key = $self->fill_in($rec,$i->{'key'}) || next; |
484 |
my @val = $self->fill_in($rec,$i->{'val'}); |
my @val = $self->fill_in($rec,$i->{'val'}) || next; |
485 |
if ($key && @val) { |
$log->debug("stored $key = ",sub { join(" | ",@val) }); |
486 |
$log->debug("stored $key = ",sub { join(" | ",@val) }); |
push @{$self->{'lookup'}->{$key}}, @val; |
|
push @{$self->{'lookup'}->{$key}}, @val; |
|
|
} |
|
487 |
} |
} |
488 |
} |
} |
489 |
} |
} |
583 |
# remove eval{...} from beginning |
# remove eval{...} from beginning |
584 |
$eval_code = $1 if ($format =~ s/^eval{([^}]+)}//s); |
$eval_code = $1 if ($format =~ s/^eval{([^}]+)}//s); |
585 |
|
|
586 |
|
my $filter_name; |
587 |
|
# remove filter{...} from beginning |
588 |
|
$filter_name = $1 if ($format =~ s/^filter{([^}]+)}//s); |
589 |
|
|
590 |
# do actual replacement of placeholders |
# do actual replacement of placeholders |
591 |
$format =~ s/v(\d+)(?:\^(\w))?/$self->get_data(\$rec,$1,$2,$i,\$found)/ges; |
$format =~ s/v(\d+)(?:\^(\w))?/$self->get_data(\$rec,$1,$2,$i,\$found)/ges; |
592 |
|
|
596 |
my $eval = $self->fill_in($rec,$eval_code,$i); |
my $eval = $self->fill_in($rec,$eval_code,$i); |
597 |
return if (! $self->_eval($eval)); |
return if (! $self->_eval($eval)); |
598 |
} |
} |
599 |
|
if ($filter_name && $self->{'filter'}->{$filter_name}) { |
600 |
|
$log->debug("filter '$filter_name' for $format"); |
601 |
|
$format = $self->{'filter'}->{$filter_name}->($format); |
602 |
|
return unless(defined($format)); |
603 |
|
$log->debug("filter result: $format"); |
604 |
|
} |
605 |
# do we have lookups? |
# do we have lookups? |
606 |
if ($format =~ /$LOOKUP_REGEX/o) { |
if ($format =~ /$LOOKUP_REGEX/o) { |
607 |
$log->debug("format '$format' has lookup"); |
$log->debug("format '$format' has lookup"); |
694 |
# remove eval{...} from beginning |
# remove eval{...} from beginning |
695 |
$eval_code = $1 if ($format =~ s/^eval{([^}]+)}//s); |
$eval_code = $1 if ($format =~ s/^eval{([^}]+)}//s); |
696 |
|
|
697 |
|
my $filter_name; |
698 |
|
# remove filter{...} from beginning |
699 |
|
$filter_name = $1 if ($format =~ s/^filter{([^}]+)}//s); |
700 |
|
|
701 |
my $prefix; |
my $prefix; |
702 |
my $all_found=0; |
my $all_found=0; |
703 |
|
|
732 |
|
|
733 |
if ($eval_code) { |
if ($eval_code) { |
734 |
my $eval = $self->fill_in($rec,$eval_code,$i); |
my $eval = $self->fill_in($rec,$eval_code,$i); |
735 |
$log->debug("about to eval{",$eval,"} format: $out"); |
$log->debug("about to eval{$eval} format: $out"); |
736 |
return if (! $self->_eval($eval)); |
return if (! $self->_eval($eval)); |
737 |
} |
} |
738 |
|
|
739 |
|
if ($filter_name && $self->{'filter'}->{$filter_name}) { |
740 |
|
$log->debug("about to filter{$filter_name} format: $out"); |
741 |
|
$out = $self->{'filter'}->{$filter_name}->($out); |
742 |
|
return unless(defined($out)); |
743 |
|
$log->debug("filter result: $out"); |
744 |
|
} |
745 |
|
|
746 |
return $out; |
return $out; |
747 |
} |
} |
808 |
return @arr; |
return @arr; |
809 |
} |
} |
810 |
|
|
811 |
|
=head2 sort_arr |
812 |
|
|
813 |
|
Sort array ignoring case and html in data |
814 |
|
|
815 |
|
my @sorted = $webpac->sort_arr(@unsorted); |
816 |
|
|
817 |
|
=cut |
818 |
|
|
819 |
|
sub sort_arr { |
820 |
|
my $self = shift; |
821 |
|
|
822 |
|
my $log = $self->_get_logger(); |
823 |
|
|
824 |
|
# FIXME add Schwartzian Transformation? |
825 |
|
|
826 |
|
my @sorted = sort { |
827 |
|
$a =~ s#<[^>]+/*>##; |
828 |
|
$b =~ s#<[^>]+/*>##; |
829 |
|
lc($b) cmp lc($a) |
830 |
|
} @_; |
831 |
|
$log->debug("sorted values: ",sub { join(", ",@sorted) }); |
832 |
|
|
833 |
|
return @sorted; |
834 |
|
} |
835 |
|
|
836 |
|
|
837 |
=head2 data_structure |
=head2 data_structure |
838 |
|
|
889 |
} |
} |
890 |
next if (! @v); |
next if (! @v); |
891 |
|
|
892 |
|
if ($tag->{'sort'}) { |
893 |
|
@v = $self->sort_arr(@v); |
894 |
|
$log->warn("sort within tag is usually not what you want!"); |
895 |
|
} |
896 |
|
|
897 |
# use format? |
# use format? |
898 |
if ($tag->{'format_name'}) { |
if ($tag->{'format_name'}) { |
899 |
@v = map { $self->apply_format($tag->{'format_name'},$tag->{'format_delimiter'},$_) } @v; |
@v = map { $self->apply_format($tag->{'format_name'},$tag->{'format_delimiter'},$_) } @v; |
908 |
next; # don't return headline in data_structure! |
next; # don't return headline in data_structure! |
909 |
} |
} |
910 |
|
|
911 |
# does tag have type? |
# delimiter will join repeatable fields |
912 |
if ($tag->{'type'}) { |
if ($tag->{'delimiter'}) { |
913 |
push @{$row->{$tag->{'type'}}}, @v; |
@v = ( join($tag->{'delimiter'}, @v) ); |
914 |
} else { |
} |
915 |
push @{$row->{'display'}}, @v; |
|
916 |
push @{$row->{'swish'}}, @v; |
# default types |
917 |
|
my @types = qw(display swish); |
918 |
|
# override by type attribute |
919 |
|
@types = ( $tag->{'type'} ) if ($tag->{'type'}); |
920 |
|
|
921 |
|
foreach my $type (@types) { |
922 |
|
# append to previous line? |
923 |
|
$log->debug("type: $type ",sub { join(" ",@v) }, $row->{'append'} || 'no append'); |
924 |
|
if ($tag->{'append'}) { |
925 |
|
|
926 |
|
# I will delimit appended part with |
927 |
|
# delimiter (or ,) |
928 |
|
my $d = $tag->{'delimiter'}; |
929 |
|
# default delimiter |
930 |
|
$d ||= ", "; |
931 |
|
|
932 |
|
my $last = pop @{$row->{$type}}; |
933 |
|
$d = "" if (! $last); |
934 |
|
$last .= $d . join($d, @v); |
935 |
|
push @{$row->{$type}}, $last; |
936 |
|
|
937 |
|
} else { |
938 |
|
push @{$row->{$type}}, @v; |
939 |
|
} |
940 |
} |
} |
941 |
|
|
942 |
|
|
949 |
my $name = $self->{'import_xml'}->{'indexer'}->{$field}->{'name'}; |
my $name = $self->{'import_xml'}->{'indexer'}->{$field}->{'name'}; |
950 |
$row->{'name'} = $name ? $self->_x($name) : $field; |
$row->{'name'} = $name ? $self->_x($name) : $field; |
951 |
|
|
952 |
|
# post-sort all values in field |
953 |
|
if ($self->{'import_xml'}->{'indexer'}->{$field}->{'sort'}) { |
954 |
|
$log->warn("sort at field tag not implemented"); |
955 |
|
} |
956 |
|
|
957 |
push @ds, $row; |
push @ds, $row; |
958 |
|
|
959 |
$log->debug("row $field: ",sub { Dumper($row) }); |
$log->debug("row $field: ",sub { Dumper($row) }); |
1014 |
|
|
1015 |
my $log = $self->_get_logger(); |
my $log = $self->_get_logger(); |
1016 |
|
|
1017 |
$log->logconfess("need file name") if (! $args->{'file'}); |
my $file = $args->{'file'} || $log->logconfess("need file name"); |
1018 |
|
|
1019 |
$log->debug("creating file ",$args->{'file'}); |
$log->debug("creating file ",$file); |
1020 |
|
|
1021 |
open(my $fh, ">", $args->{'file'}) || $log->logdie("can't open output file '$self->{'file'}': $!"); |
open(my $fh, ">", $file) || $log->logdie("can't open output file '$file': $!"); |
1022 |
print $fh $self->output( |
print $fh $self->output( |
1023 |
template => $args->{'template'}, |
template => $args->{'template'}, |
1024 |
data => $args->{'data'}, |
data => $args->{'data'}, |
1099 |
|
|
1100 |
$log->debug("eval: ",$code," [",$ret,"]"); |
$log->debug("eval: ",$code," [",$ret,"]"); |
1101 |
|
|
1102 |
return $ret || 0; |
return $ret || undef; |
1103 |
} |
} |
1104 |
|
|
1105 |
=head2 _sort_by_order |
=head2 _sort_by_order |
1169 |
also use method names, and not only classes (which are just few) |
also use method names, and not only classes (which are just few) |
1170 |
to filter logging. |
to filter logging. |
1171 |
|
|
1172 |
|
|
1173 |
|
=head1 MEMORY USAGE |
1174 |
|
|
1175 |
|
C<low_mem> options is double-edged sword. If enabled, WebPAC |
1176 |
|
will run on memory constraint machines (which doesn't have enough |
1177 |
|
physical RAM to create memory structure for whole source database). |
1178 |
|
|
1179 |
|
If your machine has 512Mb or more of RAM and database is around 10000 records, |
1180 |
|
memory shouldn't be an issue. If you don't have enough physical RAM, you |
1181 |
|
might consider using virtual memory (if your operating system is handling it |
1182 |
|
well, like on FreeBSD or Linux) instead of dropping to L<DBD::Deep> to handle |
1183 |
|
parsed structure of ISIS database (this is what C<low_mem> option does). |
1184 |
|
|
1185 |
|
Hitting swap at end of reading source database is probably o.k. However, |
1186 |
|
hitting swap before 90% will dramatically decrease performance and you will |
1187 |
|
be better off with C<low_mem> and using rest of availble memory for |
1188 |
|
operating system disk cache (Linux is particuallary good about this). |
1189 |
|
However, every access to database record will require disk access, so |
1190 |
|
generation phase will be slower 10-100 times. |
1191 |
|
|
1192 |
|
Parsed structures are essential - you just have option to trade RAM memory |
1193 |
|
(which is fast) for disk space (which is slow). Be sure to have planty of |
1194 |
|
disk space if you are using C<low_mem> and thus L<DBD::Deep>. |
1195 |
|
|
1196 |
|
However, when WebPAC is running on desktop machines (or laptops :-), it's |
1197 |
|
highly undesireable for system to start swapping. Using C<low_mem> option can |
1198 |
|
reduce WecPAC memory usage to around 64Mb for same database with lookup |
1199 |
|
fields and sorted indexes which stay in RAM. Performance will suffer, but |
1200 |
|
memory usage will really be minimal. It might be also more confortable to |
1201 |
|
run WebPAC reniced on those machines. |
1202 |
|
|
1203 |
=cut |
=cut |
1204 |
|
|
1205 |
1; |
1; |