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package Message::Passing::AMQP::Role::DeclaresExchange;
use Moo::Role;
use Types::Standard qw( Bool Str Enum );
use Scalar::Util qw/ weaken /;
use namespace::autoclean;
with 'Message::Passing::AMQP::Role::HasAChannel';
has exchange_name => (
is => 'ro',
required => 1,
isa => Str,
);
has exchange_type => (
is => 'ro',
isa => Enum([qw( topic direct fanout headers )]),
default => 'topic',
);
has exchange_durable => (
is => 'ro',
isa => Bool,
default => 1,
);
has exchange_auto_delete => (
is => 'ro',
isa => Bool,
default => 0,
);
has _exchange => (
is => 'ro',
writer => '_set_exchange',
predicate => '_has_exchange',
);
after _set_channel => sub {
my $self = shift;
weaken($self);
$self->_channel->declare_exchange(
type => $self->exchange_type,
durable => $self->exchange_durable,
auto_delete => $self->exchange_auto_delete,
exchange => $self->exchange_name,
on_success => sub {
$self->_set_exchange(shift()->method_frame);
},
on_failure => sub {
$self->_clear_channel;
},
);
};
1;
=head1 NAME
Message::Passing::AMQP::Role::DeclaresExchange - Role for instances which have an AMQP exchange.
=head1 ATTRIBUTES
=head2 exchange_name
Defines the exchange name, required.
=head2 exchange_type
Is one of topic, direct, fanout or headers, defaults to topic.
=head2 exchange_durable
Defines if the exchange is durable, defaults to true.
=head2 exchange_auto_delete
Defines if the exchange will be auto-deleted after the connection is closed,
defaults to false.
=head1 AUTHOR, COPYRIGHT AND LICENSE
See L<Message::Passing::AMQP>.
=cut
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