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use XML::Simple; |
use XML::Simple; |
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use Template; |
use Template; |
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use Log::Log4perl qw(get_logger :levels); |
use Log::Log4perl qw(get_logger :levels); |
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use Time::HiRes qw(time); |
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use Data::Dumper; |
use Data::Dumper; |
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Default C<code_page> is C<ISO-8859-2>. |
Default C<code_page> is C<ISO-8859-2>. |
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Default is not to use C<low_mem> options (see L<MEMORY USAGE> below). |
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This method will also read configuration files |
This method will also read configuration files |
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C<global.conf> (used by indexer and Web font-end) |
C<global.conf> (used by indexer and Web font-end) |
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and configuration file specified by C<config_file> |
and configuration file specified by C<config_file> |
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which describes databases to be indexed. |
which describes databases to be indexed. |
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C<low_mem> options is double-edged sword. If enabled, WebPAC |
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will run on memory constraint machines (which doesn't have enough |
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physical RAM to create memory structure for whole ISIS database). |
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If your machine has 512Mb or more and database is around 10000 records, |
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memory shouldn't be an issue. If you don't have enough physical RAM, you |
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might consider using virtual memory (if your operating system is handling it |
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well, like on FreeBSD or Linux) instead of dropping to L<DBD::Deep> to handle |
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parsed structure of ISIS database. |
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However, when WebPAC is running on desktop machines (or laptops :-), it's |
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highly undesireable for system to start swapping. Using C<low_mem> option can |
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reduce WecPAC memory usage to 16Mb for same database with lookup fields and |
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sorted indexes which stay in RAM. Performance will suffer, but memory usage |
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will really be minimal. It might be also more confortable to run WebPAC reniced |
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on those machines. |
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=cut |
=cut |
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# mapping between data type and tag which specify |
# mapping between data type and tag which specify |
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my $self = {@_}; |
my $self = {@_}; |
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bless($self, $class); |
bless($self, $class); |
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$self->{'start_t'} = time(); |
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my $log_file = $self->{'log'} || "log.conf"; |
my $log_file = $self->{'log'} || "log.conf"; |
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Log::Log4perl->init($log_file); |
Log::Log4perl->init($log_file); |
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# running with low_mem flag? well, use DBM::Deep then. |
# running with low_mem flag? well, use DBM::Deep then. |
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if ($self->{'low_mem'}) { |
if ($self->{'low_mem'}) { |
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$log->info("running with low_mem which impacts performance (<64 Mb memory usage)"); |
$log->info("running with low_mem which impacts performance (<32 Mb memory usage)"); |
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my $db_file = "data.db"; |
my $db_file = "data.db"; |
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if ($db->error()) { |
if ($db->error()) { |
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$log->logdie("can't open '$db_file' under low_mem: ",$db->error()); |
$log->logdie("can't open '$db_file' under low_mem: ",$db->error()); |
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} else { |
} else { |
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$log->debug("using file $db_file for DBM::Deep"); |
$log->debug("using file '$db_file' for DBM::Deep"); |
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} |
} |
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$self->{'db'} = $db; |
$self->{'db'} = $db; |
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$self->{'last_pcnt'} ||= 1; |
$self->{'last_pcnt'} ||= 1; |
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$self->{'last_pcnt'} = $curr if ($curr < $self->{'last_pcnt'}); |
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my $p = int($curr * 100 / $max); |
my $p = int($curr * 100 / $max); |
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# reset on re-run |
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if ($p < $self->{'last_pcnt'}) { |
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$self->{'last_pcnt'} = $p; |
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$self->{'last_t'} = time(); |
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$self->{'last_curr'} = 1; |
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} |
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if ($p != $self->{'last_pcnt'}) { |
if ($p != $self->{'last_pcnt'}) { |
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printf STDERR ("%5d / %5d [%-51s] %-2d %% \r",$curr,$max,"=" x ($p/2).">", $p ); |
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my $last_curr = $self->{'last_curr'} || $curr; |
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my $t = time(); |
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my $rate = ($curr - $last_curr) / (($t - $self->{'last_t'} || 1)); |
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my $eta = ($max-$curr) / ($rate || 1); |
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printf STDERR ("%5d [%-38s] %-5d %0.1f/s %s\r",$curr,"=" x ($p/3)."$p%>", $max, $rate, $self->fmt_time($eta)); |
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$self->{'last_pcnt'} = $p; |
$self->{'last_pcnt'} = $p; |
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$self->{'last_t'} = time(); |
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$self->{'last_curr'} = $curr; |
339 |
} |
} |
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print STDERR "\n" if ($p == 100); |
print STDERR "\n" if ($p == 100); |
341 |
} |
} |
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=head2 fmt_time |
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Format time (in seconds) for display. |
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print $webpac->fmt_time(time()); |
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This method is called by L<progress_bar> to display remaining time. |
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=cut |
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sub fmt_time { |
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my $self = shift; |
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my $t = shift || 0; |
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my $out = ""; |
358 |
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359 |
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my ($ss,$mm,$hh) = gmtime($t); |
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$out .= "${hh}h" if ($hh); |
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$out .= sprintf("%02d:%02d", $mm,$ss); |
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$out .= " " if ($hh == 0); |
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return $out; |
364 |
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} |
365 |
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366 |
=head2 open_import_xml |
=head2 open_import_xml |
367 |
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368 |
Read file from C<import_xml/> directory and parse it. |
Read file from C<import_xml/> directory and parse it. |
1045 |
also use method names, and not only classes (which are just few) |
also use method names, and not only classes (which are just few) |
1046 |
to filter logging. |
to filter logging. |
1047 |
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1048 |
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1049 |
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=head1 MEMORY USAGE |
1050 |
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1051 |
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C<low_mem> options is double-edged sword. If enabled, WebPAC |
1052 |
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will run on memory constraint machines (which doesn't have enough |
1053 |
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physical RAM to create memory structure for whole source database). |
1054 |
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|
1055 |
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If your machine has 512Mb or more of RAM and database is around 10000 records, |
1056 |
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memory shouldn't be an issue. If you don't have enough physical RAM, you |
1057 |
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might consider using virtual memory (if your operating system is handling it |
1058 |
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well, like on FreeBSD or Linux) instead of dropping to L<DBD::Deep> to handle |
1059 |
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parsed structure of ISIS database (this is what C<low_mem> option does). |
1060 |
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1061 |
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Hitting swap at end of reading source database is probably o.k. However, |
1062 |
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hitting swap before 90% will dramatically decrease performance and you will |
1063 |
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be better off with C<low_mem> and using rest of availble memory for |
1064 |
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operating system disk cache (Linux is particuallary good about this). |
1065 |
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However, every access to database record will require disk access, so |
1066 |
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generation phase will be slower 10-100 times. |
1067 |
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1068 |
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Parsed structures are essential - you just have option to trade RAM memory |
1069 |
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(which is fast) for disk space (which is slow). Be sure to have planty of |
1070 |
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disk space if you are using C<low_mem> and thus L<DBD::Deep>. |
1071 |
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1072 |
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However, when WebPAC is running on desktop machines (or laptops :-), it's |
1073 |
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highly undesireable for system to start swapping. Using C<low_mem> option can |
1074 |
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reduce WecPAC memory usage to around 64Mb for same database with lookup |
1075 |
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fields and sorted indexes which stay in RAM. Performance will suffer, but |
1076 |
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memory usage will really be minimal. It might be also more confortable to |
1077 |
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run WebPAC reniced on those machines. |
1078 |
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1079 |
=cut |
=cut |
1080 |
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1081 |
1; |
1; |