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package IPC::PubSub::Publisher;
use strict;
use warnings;
use base qw/Class::Accessor::Fast/;
__PACKAGE__->mk_accessors(qw/expiry/);
__PACKAGE__->mk_ro_accessors(qw/_indice uuid _cache/);
sub new {
my $class = shift;
my $cache = shift;
require Data::UUID;
my $uuid = Data::UUID->new->create_b64;
my $self = bless({
expiry => 0,
_cache => $cache,
_indice => { map { $_ => 1 } @_ },
uuid => $uuid,
});
$cache->add_publisher($_, $uuid) for @_;
return $self;
}
sub channels {
my $self = shift;
wantarray
? keys(%{$self->_indice})
: $self->_indice;
}
sub publish {
my $self = shift;
$self->_indice->{$_} ||= do {
$self->_cache->add_publisher($_, $self->uuid);
1;
} for @_;
}
sub unpublish {
my $self = shift;
delete($self->_indice->{$_}) and $self->_cache->remove_publisher($_, $self->uuid) for @_;
}
sub msg {
my $self = shift;
my $uuid = $self->uuid;
my $indice = $self->_indice;
my $expiry = $self->expiry;
foreach my $msg (@_) {
while (my ($channel, $index) = each %$indice) {
$self->_cache->put($channel, $uuid, $index, $msg, $expiry);
$indice->{$channel} = $index+1;
}
}
}
no warnings 'redefine';
sub DESTROY {
my $self = shift;
return unless $self->_cache;
$self->_cache->remove_publisher($_, $self->uuid) for $self->channels;
}
1;
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