NetApp
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lib/NetApp/Filer/TimeoutCache.pm view on Meta::CPAN
package NetApp::Filer::TimeoutCache;
our $VERSION = '500.002';
$VERSION = eval $VERSION; ## no critic: StringyEval
use strict;
use warnings;
use English;
use Carp;
use Params::Validate qw( :all );
sub TIEHASH {
my $class = shift;
my (%args) = validate( @_, {
lifetime => { type => SCALAR,
regex => qr{^\d+$} },
});
if ( $args{lifetime} <= 0 ) {
croak("Invalid argument: lifetime must be a positive integer\n");
}
my %self = (
lifetime => $args{lifetime},
cache => {},
);
return bless \%self => $class;
}
sub STORE {
my $self = shift;
my ($key, $value) = @_;
$self->{cache}->{$key} = {
expiration => $self->{lifetime} + time,
value => $value,
};
return $value;
}
sub FETCH {
my $self = shift;
my $key = shift;
return $self->{cache}->{$key}->{value};
}
sub DELETE {
my $self = shift;
my $key = shift;
my $value = $self->{cache}->{$key}->{value};
delete $self->{cache}->{$key};
return $value;
}
sub CLEAR {
return shift->{cache} = {};
}
sub EXISTS {
my $self = shift;
my $key = shift;
if ( not exists $self->{cache}->{$key} ) {
return 0;
}
my $data = $self->{cache}->{$key};
if ( $data->{expiration} > time ) {
return 1;
} else {
return 0;
}
}
1;
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