NAME

Net::AMQP - Advanced Message Queue Protocol (de)serialization and representation

SYNOPSIS

  use Net::AMQP;

  Net::AMQP::Protocol->load_xml_spec('amqp0-8.xml');

  ...

  my @frames = Net::AMQP->parse_raw_frames(\$input);
  
  ...

  foreach my $frame (@frames) {
      if ($frame->can('method_frame') && $frame->method_frame->isa('Net::AMQP::Protocol::Connection::Start')) {
          my $output = Net::AMQP::Frame::Method->new(
              channel => 0,
              method_frame => Net::AMQP::Protocol::Connection::StartOk->new(
                  client_properties => { ... },
                  mechanism         => 'AMQPLAIN',
                  locale            => 'en_US',
                  response          => {
                      LOGIN    => 'guest',
                      PASSWORD => 'guest',
                  },
              ),
          );
          print OUT $output->to_raw_frame();
      }
  }

DESCRIPTION

This module implements the frame (de)serialization and representation of the Advanced Message Queue Protocol (http://www.amqp.org/). It is to be used in conjunction with client or server software that does the actual TCP/IP communication.

CLASS METHODS

parse_raw_frames

  Net::AMQP->parse_raw_frames(\$binary_payload)

Given a scalar reference to a binary string, return a list of Net::AMQP::Frame objects, consuming the data in the string. Croaks on invalid input.

AMQP VERSIONS

AMQP 0-8 is fully supported.

AMQP 0-9, 0-9-1, and 0-10 are usably supported. There are interoperability issues with table encodings because the standard disagrees with the dialects of major implementations (RabbitMQ and Qpid). For now, Net::AMQP limits itself to universally agreed table elements. See <http://www.rabbitmq.com/amqp-0-9-1-errata.html> for details.

AMQP 1.0 has not been tested.

TODO

Address the dialect problem, either via modified spec files that completely control the wire protocol, or by programmatic request. The former has precedent (viz "qpid.amqp0-8.xml" in spec), but could cause a combinatorial explosion as more brokers and versions are added. The latter adds interface complexity.

QUOTES

"All problems in computer science can be solved by another level of indirection." -- David Wheeler's observation

"...except for the problem of too many layers of indirection." -- Kevlin Henney's corollary

COPYRIGHT

This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. The full text of the license can be found in the LICENSE file included with this module.

AUTHOR

Eric Waters <ewaters@gmail.com>