package Catalyst::Engine::Stomp;
use Moose;
-extends 'Catalyst::Engine::Embeddable';
-
-our $VERSION = '0.03';
-
use List::MoreUtils qw/ uniq /;
use HTTP::Request;
use Net::Stomp;
+use namespace::autoclean;
+
+extends 'Catalyst::Engine::Embeddable';
+
+our $VERSION = '0.06';
has connection => (is => 'rw', isa => 'Net::Stomp');
has conn_desc => (is => 'rw', isa => 'Str');
$c->stash->{response} = $response;
}
- # The default serialization is YAML, but this configuration
- # may be overridden in your controller:
- __PACKAGE__->config(
- 'default' => 'text/x-yaml',
- 'stash_key' => 'rest',
- 'map' => { 'text/x-yaml' => 'YAML' },
- );
-
=head1 DESCRIPTION
Write a Catalyst app connected to a Stomp messagebroker, not HTTP. You
my ($self, $app, $oneshot) = @_;
die 'No Engine::Stomp configuration found'
- unless ref $app->config->{'Engine::Stomp'} eq 'HASH';
-
- # list the path namespaces that will be mapped as queues.
- #
- # this is known to use the deprecated
- # Dispatcher->action_hash() method, but there doesn't appear
- # to be another way to get the relevant strings out.
- #
- # http://github.com/rafl/catalyst-runtime/commit/5de163f4963d9dbb41d7311ca6f17314091b7af3#L2R644
- #
- my @queues =
- uniq
- grep { length $_ }
- map { $_->namespace }
- values %{$app->dispatcher->action_hash};
-
- # connect up
+ unless ref $app->config->{'Engine::Stomp'} eq 'HASH';
+
+ my @queues = grep { length $_ }
+ map { $app->controller($_)->action_namespace } $app->controllers;
+
+ # connect up
my %template = %{$app->config->{'Engine::Stomp'}};
- $self->connection(Net::Stomp->new(\%template));
- $self->connection->connect();
- $self->conn_desc($template{hostname}.':'.$template{port});
+ my $subscrine_headers = $template{subscribe_headers} || {};
+ die("subscribe_headers config for Engine::Stomp must be a hashref!\n")
+ if (ref($subscribe_headers) ne 'HASH');
- # subscribe, with client ack.
+ $self->connection(Net::Stomp->new(\%template));
+ $self->connection->connect();
+ $self->conn_desc($template{hostname}.':'.$template{port});
+
+ # subscribe, with client ack.
foreach my $queue (@queues) {
- my $queue_name = "/queue/$queue";
- $self->connection->subscribe({
- destination => $queue_name,
- ack => 'client',
- });
+ my $queue_name = "/queue/$queue";
+ $self->connection->subscribe({
+ %$subscribe_headers,
+ destination => $queue_name,
+ ack => 'client',
+ });
}
- # enter loop...
- while (1) {
- my $frame = $self->connection->receive_frame();
- $self->handle_stomp_frame($app, $frame);
- last if $ENV{ENGINE_ONESHOT};
- }
- exit 0;
+ # enter loop...
+ while (1) {
+ my $frame = $self->connection->receive_frame();
+ $self->handle_stomp_frame($app, $frame);
+ last if $ENV{ENGINE_ONESHOT};
+ }
+ exit 0;
}
=head2 prepare_request
=cut
sub prepare_request {
- my ($self, $c, $req, $res_ref) = @_;
+ my ($self, $c, $req, $res_ref) = @_;
shift @_;
$self->next::method(@_);
$c->req->address($self->conn_desc);
my ($self, $c) = @_;
my $error = join "\n", @{$c->error};
if ($error) {
- $c->log->debug($error);
+ $c->log->debug($error);
}
return $self->next::method($c);
}
my $command = $frame->command();
if ($command eq 'MESSAGE') {
- $self->handle_stomp_message($app, $frame);
+ $self->handle_stomp_message($app, $frame);
}
elsif ($command eq 'ERROR') {
- $self->handle_stomp_error($app, $frame);
+ $self->handle_stomp_error($app, $frame);
}
else {
- $app->log->debug("Got unknown Stomp command: $command");
+ $app->log->debug("Got unknown Stomp command: $command");
}
}
# queue -> controller
my $queue = $frame->headers->{destination};
- my ($controller) = $queue =~ m!^/queue/(.*)$!;
+ my ($controller) = $queue =~ m|^/queue/(.*)$|;
# set up request
- my $config = $app->config->{'Engine::Stomp'};
- my $url = 'stomp://'.$config->{hostname}.':'.$config->{port}.'/'.$controller;
- my $req = HTTP::Request->new(POST => $url);
- $req->content($frame->body);
+ my $config = $app->config->{'Engine::Stomp'};
+ my $url = 'stomp://'.$config->{hostname}.':'.$config->{port}.'/'.$controller;
+ my $req = HTTP::Request->new(POST => $url);
+ $req->content($frame->body);
$req->content_length(length $frame->body);
# dispatch
my $response;
- $app->handle_request($req, \$response);
+ $app->handle_request($req, \$response);
- # reply
- my $reply_queue = '/remote-temp-queue/' . ($response->headers->header('X-Reply-Address'));
- $self->connection->send({ destination => $reply_queue, body => $response->content });
+ # reply, if header set
+ if (my $reply_to = $response->headers->header('X-Reply-Address')) {
+ my $reply_queue = '/remote-temp-queue/' . $reply_to;
+ $self->connection->send({ destination => $reply_queue, body => $response->content });
+ }
- # ack the message off the queue now we've replied
+ # ack the message off the queue now we've replied / processed
$self->connection->ack( { frame => $frame } );
}
__PACKAGE__->meta->make_immutable;
-1;
-