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|
package presque::RestQueueHandler;
use JSON;
use Moose;
extends 'Tatsumaki::Handler';
with
qw/presque::Role::QueueName presque::Role::Error presque::Role::Response/;
__PACKAGE__->asynchronous(1);
sub get {
my ( $self, $queue_name ) = @_;
return $self->http_error_queue if !$queue_name;
my $dkey = $self->_queue_delayed($queue_name);
my $lkey = $self->_queue($queue_name);
$self->application->redis->get(
$self->_queue_stat($queue_name),
sub {
my $status = shift;
if ( defined $status && $status == 0 ) {
return $self->http_error_closed_queue();
}
$self->application->redis->zrangebyscore(
$dkey, 0, time,
sub {
my $value = shift;
if ( $value && scalar @$value ) {
my $k = shift @$value;
$self->application->redis->zrem(
$dkey, $k,
sub {
$self->application->redis->get(
$k,
sub {
$self->finish(shift);
}
);
}
);
}
else {
$self->application->redis->lpop(
$lkey,
sub {
my $value = shift;
my $qpkey = $self->_queue_policy($queue_name);
if ($value) {
$self->application->redis->get(
$value,
sub {
$self->finish(shift);
}
);
}
else {
$self->http_error( 'no job', 404 );
}
}
);
}
}
);
}
);
}
sub post {
my ( $self, $queue_name ) = @_;
return $self->http_error_queue if ( !$queue_name );
return $self->http_error_content_type
if (!$self->request->header('Content-Type')
|| $self->request->header('Content-Type') ne 'application/json' );
my $input = $self->request->parameters;
my $delayed = $input->{delayed};
my $p = $self->request->content;
$self->application->redis->incr(
$self->_queue_uuid($queue_name),
sub {
my $uuid = shift;
my $key = $self->_queue_key($queue_name, $uuid);
$self->application->redis->set(
$key, $p,
sub {
my $status_set = shift;
my $lkey = $self->_queue($queue_name);
if ( $uuid == 1 ) {
$self->application->redis->sadd(
'QUEUESET',
$lkey,
sub {
my $ckey = $self->_queue_stat($queue_name);
$self->application->redis->set( $ckey, 1 );
$self->_finish_post( $lkey, $key, $status_set,
$delayed, $queue_name );
}
);
}
else {
$self->_finish_post( $lkey, $key, $status_set,
$delayed, $queue_name );
}
}
);
}
);
}
sub delete {
my ( $self, $queue_name ) = @_;
return $self->http_error_queue if ( !$queue_name );
# delete delayed queue
my $lkey = $self->_queue($queue_name);
my $dkey = $self->_queue_delayed($queue_name);
$self->application->redis->del(
$lkey,
sub {
my $res = shift;
$self->application->redis->del(
$dkey,
sub {
$self->finish(
JSON::encode_json(
{ queue => $queue_name, status => $res }
)
);
}
);
}
);
}
sub _finish_post {
my ($self, $lkey, $key, $result, $delayed, $queue_name) = @_;
my ($method, @args) = ('rpush', $lkey, $key);
if ($delayed) {
$method = 'zadd';
@args = ($queue_name.':delayed', $delayed, $key);
}
$self->application->redis->$method(
@args,
sub {
$self->finish({status => 'success'});
}
);
}
1;
__END__
=head1 NAME
presque::IndexHandler - a redis based message queue
=head1 DESCRIPTION
=head1 METHODS
=head2 get
Get a JSON object out of the queue.
=head2 post
Insert a new job in the queue. The POST request must:
=over 4
=item
have the B<Content-Type> header of the request set to B<application/json>
=item
the B<body> of the request must be a valid JSON object
=back
=head2 delete
Purge and delete the queue.
=head1 AUTHOR
franck cuny E<lt>franck@lumberjaph.netE<gt>
=head1 SEE ALSO
=head1 LICENSE
Copyright 2010 by Linkfluence
L<http://linkfluence.net>
This library is free software; you can redistribute it and/or modify
it under the same terms as Perl itself.
=cut
|
