[occi-wg] Notes from our call

[Ross Cooney]

Hi List,

 

Here are some notes from a call we held today regarding OCCI and message
queue technology, specifically AMQP.

 

 

 

Attendees:

Ross Cooney - StormMQ

Eamon Walshe - StormMQ

David Wragg - RabbitMQ

Thijs Metsch -- OCCI

Andy Edmonds -- OCCI

 

 

Thijs gave us a full outline of the OCCI project and in particular the
existing HTTP communication system.

 

It was agreed that HTTP was a perfect fit for this management interface
because:

1)      HTTP is widely adopted, easy to use and well documented

2)      HTTP interfaces are widely supported and HTTP resources are widely
used by vendors in this space

3)      HTTP is easy to parse, troubleshoot and extend

It was also agreed that HTTP is not good at asynchronous communication and
to get this to work properly often involves complicated polling mechanisms
that are not optimal. Any message queue technology would help
here...including AMQP.

 

The advantages of developing an AMQP communications module that would sit
beside the HTTP module as an option are:

1)      Asynchronous communication would be trivial

2)      AMQP would allow you to sent a request and get any number of
responses (for example a single request to start 100 VM's could wait for all
100 responses from the VM's)

3)      Complicated HTTP polling mechanisms would be a thing of the past

4)      Additional functionality might be added in the future

 

So, while advantageous, it was also felt that there isn't a groundswell of
interest from adopters of OCCI to develop an AMQP communications
module...put simply, it would be a nice thing to have, but at this stage
nobody particularly wants it ;)

 

However, we discussed the area of network or resource monitoring and felt
that this would suit a message queue perfectly. It was agreed that while
outside the scope of the OCCI remit, robust system monitoring is a
prerequisite to wide scale cloud adoption.

 

StormMQ is working on a AMQP based monitoring application that we plan to
release as an open source project. Ross and Eamon from StormMQ will feed
back to the group when this is available and perhaps this may be of interest
to OCCI.

 

 

 

 

 

Ross Cooney

Commercial Director

 <mailto:ross.cooney at StormMQ.com> ross.cooney at StormMQ.com

StormMQ Limited

 

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Gateshead int'l Business Centre, Mulgrave Terrace, Gateshead, NE8 1AN,
United Kingdom

Telephone:   08453 712 567

 

Registered office:

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