CODEWITHSUNDEEP
phpmessagingrpcamqp
DeejUK
DeejUK

Reputation: 13481

Synchronous AMQP from PHP

Can PHP treat AMQP like an RPC service, and send a message and block until a reply is returned? Are there any good examples of this, and do any libraries wrap such functionality up in an easy-to-use way?

I'd like to have the flexibility of a brokered messaging system, but shield the web tier from needing to know about its asynchronous nature.

Upvotes: 4

Views: 2351

Answers (1)

Brian Kelly
Brian Kelly

Reputation: 19295

Sure, absolutely. Look at how an RPC-style request flows around a system:

  1. A request is issued
  2. The requester now blocks waiting for a reply to that request

That's completely implementable with an asynchronous message system like AMQP. You just need to do the RPC correlation yourself:

  1. Send your request within an asynchronous message with a unique ID within it (this does not block)
  2. Receive messages from the messaging system and block until you get a message back with the same unique ID (that means you've just received your reply)

RabbitMQ, an AMQP broker, offers documentation online on how to do exactly this.

Upvotes: 4

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