ntruchsess 16797cc8f6 MQTT: initial checkin of MQTT and MQTT_DEVICE
git-svn-id: https://svn.fhem.de/fhem/trunk/fhem@6648 2b470e98-0d58-463d-a4d8-8e2adae1ed80
2014-10-01 10:53:51 +00:00

107 lines
2.2 KiB
Perl

use strict;
use warnings;
package Net::MQTT::Message::Subscribe;
$Net::MQTT::Message::Subscribe::VERSION = '1.142010';
# ABSTRACT: Perl module to represent an MQTT Subscribe message
use base 'Net::MQTT::Message';
use Net::MQTT::Constants qw/:all/;
sub message_type {
8
}
sub _default_qos {
MQTT_QOS_AT_LEAST_ONCE
}
sub message_id { shift->{message_id} }
sub topics { shift->{topics} }
sub _topics_string {
join ',', map { $_->[0].'/'.qos_string($_->[1]) } @{shift->{topics}}
}
sub _remaining_string {
my ($self, $prefix) = @_;
$self->message_id.' '.$self->_topics_string.' '.
$self->SUPER::_remaining_string($prefix)
}
sub _parse_remaining {
my $self = shift;
my $offset = 0;
$self->{message_id} = decode_short($self->{remaining}, \$offset);
while ($offset < length $self->{remaining}) {
push @{$self->{topics}}, [ decode_string($self->{remaining}, \$offset),
decode_byte($self->{remaining}, \$offset) ];
}
substr $self->{remaining}, 0, $offset, '';
}
sub _remaining_bytes {
my $self = shift;
my $o = encode_short($self->message_id);
foreach my $r (@{$self->topics}) {
my ($name, $qos) = @$r;
$o .= encode_string($name);
$o .= encode_byte($qos);
}
$o
}
1;
__END__
=pod
=encoding UTF-8
=head1 NAME
Net::MQTT::Message::Subscribe - Perl module to represent an MQTT Subscribe message
=head1 VERSION
version 1.142010
=head1 SYNOPSIS
# instantiated by Net::MQTT::Message
=head1 DESCRIPTION
This module encapsulates a single MQTT Subscribe message. It is a
specific subclass used by L<Net::MQTT::Message> and should not
need to be instantiated directly.
=head1 METHODS
=head2 C<message_id()>
Returns the message id field of the MQTT Subscribe message.
=head2 C<topics()>
Returns the list of topics of the MQTT Subscribe message. Each
element of the list is a 2-ple containing the topic and its associated
requested QoS level.
=head1 AUTHOR
Mark Hindess <soft-cpan@temporalanomaly.com>
=head1 COPYRIGHT AND LICENSE
This software is copyright (c) 2014 by Mark Hindess.
This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.
=cut