launchpad-dev team mailing list archive

[Aaron Bentley <aaron@xxxxxxxxxxxxx>]

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On 09/23/2010 07:05 PM, Ian Booth wrote:
>>
>> Here are a few things I have lined up that could be done via rabbit:
>> -Send oops reports to lp-oops immediately rather than later.
>> -Trigger completion of long-poll paused requests on appservers.
>> -raise traps when things like the queue retry limit trigger
>>
> 
> And another from me:
> 
> - things like the branch scan job or diff generation when a merge
> proposal is created, plus other similar examples

I was looking for examples of uses of messaging outside task dispatch.
Branch scan and diff generation fall squarely under task dispatch.  They
are exactly the sort of thing I was already considering, not something I
hadn't thought of.

I would absolutely love those to become more responsive, and I think
that messaging is the right underlying technology, but they're entirely
in scope for
https://dev.launchpad.net/Foundations/NewTaskSystem/Requirements

> Basically, workflow which is currently implemented using cron jobs and
> database updates as essentially the task trigger mechanism should be
> migrate to a solution based on message queues IMHO.

I don't know that message *queues* per se are necessary.  Transient
messaging ala Twisted AMP could also work, and would let us continue to
access job data using our familiar tools and libraries.

Aaron
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