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Re: Queue Service

 

Maybe not. I thought more on the way home.

Dropping the account_id, would this also assume that there can be more
than one queue per account?

On 2/14/11 5:54 PM, "Eric Day" <eday@xxxxxxxxxxxx> wrote:

>Yeah, for anonymous access that would be the case. Those are not needed
>when the request comes in with OpenStack Auth headers (like nova).
>
>Do you think we should be repeating the account id in the URI when
>the auth headers are present?
>
>-Eric
>
>On Mon, Feb 14, 2011 at 11:44:58PM +0000, Paul Voccio wrote:
>> Eric,
>> 
>> Just looking at the http operations. Shouldn't the calls be around the
>> account then the queue?
>> 
>> GET /$account_id/queue/id to list all the queues
>> GET /$account_id/queue/id/message/id
>> 
>> Am I off here? Thoughts?
>> 
>> pvo
>>   
>> 
>> On 2/14/11 5:07 PM, "Eric Day" <eday@xxxxxxxxxxxx> wrote:
>> 
>> >I've summarized the original email and added more sections for review
>> >and discussion here:
>> >
>> >http://wiki.openstack.org/QueueService
>> >
>> >In particular there are details on the various components of the
>> >queue service, a draft at what the REST operations will look like,
>> >and a couple brief examples.
>> >
>> >Please let me know if any clarification is needed and I'll update
>> >the wiki. Feedback and discussion on use cases and what you think
>> >the service should look like is very appreciated.
>> >
>> >Thanks,
>> >-Eric
>> >
>> >On Mon, Feb 14, 2011 at 09:51:42AM -0800, Eric Day wrote:
>> >> Hi everyone,
>> >> 
>> >> When looking at other services to include as part of OpenStack, the
>> >> first that comes to mind for many is a queue. A queue service can
>> >> not only provide a useful public cloud service, but can also provide
>> >> one of the building blocks for other services. I've been leading an
>> >> effort to research and gather requirements for a queue service and
>> >> I'd like to share the current state and get community feedback. I
>> >> expect real development to begin very soon, and would also like to
>> >> identify developers who will have time to dedicate to this project.
>> >> 
>> >> I'd like to note this is not an official OpenStack project yet. The
>> >> intention is once we have the community support and a simple
>> >> implementation, we will submit the project to the OpenStack Project
>> >> Oversight Committee for approval.
>> >> 
>> >> The reason we are initiating our own project vs using an existing one
>> >> is due to simplicity, modularity, and scale. Also, very few (if any)
>> >> existing queue systems out there were built with multi-tenant cloud
>> >> use cases in mind. Very few also have a simple and extensible REST
>> >> API. There are possible solutions to build an AMQP based service,
>> >> but AMQP brings complexity and a protocol not optimized for high
>> >> latency and intermittent connectivity.
>> >> 
>> >> The primary goals of the queue service are:
>> >> 
>> >> * Simple - Think simple REST based queues for most use cases. Easy
>> >>   to access and use from any language. It should not require much
>> >>   setup, if any, before you can start pushing messages into it.
>> >> 
>> >> * Modular API - Initially we'll focus on a simple REST API,
>> >>   but this will not in any way be a first-class API. It should be
>> >>   possible to add other protocols (AMQP, protocol buffers, Gearman,
>> >>   etc) for other use cases. Note that the internal service API will
>> >>   not always provide a 1-1 mapping with the external API, so some
>> >>   features with advanced protocols may be unavailable.
>> >> 
>> >> * Fast - Since this will act as a building block for other services
>> >>   that my drive heavy throughput, performance will have a focus. This
>> >>   mostly comes down to implementation language and how clients and
>> >>   workers interact with the broker to reduce network chatter.
>> >> 
>> >> * Multi-tenant - Support multiple accounts for the service, and since
>> >>   this will also be a public service for some deployments, protect
>> >>   against potentially malicious users.
>> >> 
>> >> * Persistent - Allow messages to optionally be persistent. For
>> >>   protocols that can support it, this can be an optional flag while
>> >>   the message is submitted. The persistent storage should also be
>> >>   modular so we can test various data stores and accommodate
>>different
>> >>   deployment options.
>> >> 
>> >> * Zones and locality awareness - As we've been discussing in other
>> >>   threads, locality in cloud services is an important feature. When
>> >>   dealing with where messages should be processed, we need to have
>> >>   location awareness to process data where it exists to reduce
>>network
>> >>   overhead and processing time.
>> >> 
>> >> Before diving down into implementation details, I would like to hear
>> >> what folks have to say about the initial requirements above. Once
>> >> there is something along the lines of agreement, I'll be sending out
>> >> other topics for discussion dealing with implementation.
>> >> 
>> >> I'm looking forward to your feedback. Thanks!
>> >> 
>> >> -Eric
>> >
>> >_______________________________________________
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>> 
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