[AIX, Linux, Windows]

Topologies for AMQP clients with IBM MQ

Example topologies to help you develop your AMQP clients to work with IBM® MQ.

AMQP clients communicating over IBM MQ
You can use IBM MQ as the messaging provider for any application that complies with AMQP 1.0. Although any AMQP 1.0 client can connect to an AMQP channel, some AMQP features are not supported, for example transactions or multiple sessions.
AMQP clients exchanging messages with IBM MQ applications
By defining and starting an AMQP channel, AMQP 1.0 applications can publish messages that are received by existing MQ applications. Messages published through an AMQP channel are all sent to MQ topics, not MQ queues. An MQ application that has created a subscription using the MQSUB API call receives messages published by AMQP 1.0 applications, provided that the topic string or topic object used by the MQ application matches the topic string published by the AMQP client.
Configuring AMQP clients to interact directly with applications on IBM MQ queues
The IBM MQ AMQP implementation supports publish/subscribe and point to point. For any AMQP client that does not support point to point use the following steps to send messages to a queue, or receive messages from a queue.
Configuring an AMQP client for high availability
You can configure AMQP 1.0 applications to connect to the active instance of an IBM MQ multi-instance queue manager and fail over to the standby instance of the multi-instance queue manager in a high availability (HA) pair. To do this, you configure the AMQP application with two IP addresses and port pairs.
Configuring publish/subscribe for AMQP clients
AMQP clients can publish to a topic with an IBM MQ subscription that routes messages to an IBM MQ queue read by an existing application. If you want an AMQP 1.0 application to send messages to an existing IBM MQ application that is configured to read from a queue, you must define an administered IBM MQ subscription on the queue manager.
AMQP client using a queue alias to receive messages from an IBM MQ application
An AMQP client can subscribe to a topic and receive messages put to an alias queue by an IBM MQ application. If you want an AMQP 1.0 application to receive messages from an existing IBM MQ application that is configured to put messages on a queue, you must define a queue alias (QALIAS) on the queue manager.
AMQP client submitting requests to and consuming responses from an application server
An AMQP client can submit requests to a message-driven bean running in an application server and consume responses from a reply topic. IBM MQ supports AMQP 1.0 applications setting a reply-to topic in the messages that IBM MQ publishes. When an AMQP message is published with the reply-to attribute set, the value of the reply-to field is set as a JMS property for JMS consumers to receive. This setting allows JMS consumers to read the reply-to topic from the message and send a response message back to the AMQP client.
Interoperability between MQ Light and Apache Qpid JMS applications
MQ Light and Apache Qpid JMS applications work in similar ways, and when subscribing to a topic, create IBM MQ subscriptions that follow the same naming convention.

Parent topic: [AIX, Linux, Windows]

Developing AMQP client applications

Related tasks

Creating and using AMQP channels
Securing AMQP clients