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| package System::File::DBM;
use threads::shared;
use DBM::Deep;
use Data::Dumper;
use Compress::Zlib;
# http://search.cpan.org/~rkinyon/DBM-Deep-0.983/lib/DBM/Deep.pm
our @ISA = ("DBM::Deep");
sub new {
my $class = shift;
my $Qna = shift;
my $db = $class->SUPER::new(
file => $Qna->{'Store'},
filter_store_key => \&_compress,
filter_store_value => \&_compress,
filter_fetch_key => \&_decompress,
filter_fetch_value => \&_decompress
);
share(%$db);
return bless \%$db, $class;
}
sub enqueue
{
my $db = shift;
my $value = shift;
my $key = shift;
lock(%$db);
if ( defined $key and ref($value) eq "HASH" || "ARRAY")
{
eval
{
$db->put($key, $value) and cond_signal %$db;
};
if ($@)
{
warn "\nErreur fonction enqueue avec clef\n";
print $@;
exit;
}
}
else
{
if ( ref($value) eq "HASH" || "ARRAY" and exists $value->{'url'} )
{
eval
{
$db->put($value->{'url'}, $value) and cond_signal %$db;
};
if ($@)
{
warn "\nErreur fonction enqueue\n";
print $@;
exit;
}
}
}
}
sub dequeue
{
my $db = shift;
my $temp = undef;
lock(%$db);
my $max = 5;
cond_wait %$db until %$db;
cond_signal %$db if [%$db] > 1; # vive les hack
if ( [%$db] > 1 )
{
eval
{
while ( my ($c, $v) = each(%$db) and $max > 0)
{
$temp->{$c} = $v if defined $c;
$db->delete($c) if defined $c;
}
$db->optimize();
return $temp;
};
if ($@)
{
warn "\nErreur dans la fonction dequeue\n";
print $@;
exit;
}
}
else
{
return {};
}
}
sub pending
{
my $db = shift;
lock(%$db);
return scalar keys %$db;
}
sub flush
{
my $db = shift;
lock(%$db);
$db->clear();
$db->optimize();
}
sub optimize
{
my $db = shift;
lock(%$db);
$db->optimize();
}
sub _compress
{
return Compress::Zlib::memGzip( $_[0] ) ;
}
sub _decompress
{
return Compress::Zlib::memGunzip( $_[0] ) ;
}
1; |
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