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From "Gilles Scokart" <gscok...@gmail.com>
Subject Re: Can multiple processes download artifacts and access them from one Ivy local cache without failure?
Date Mon, 07 Jan 2008 08:20:15 GMT
This problem has been solved recently [1].  You shouldn't not have the
problem with the 2.0-beta-1 release.


[1] https://issues.apache.org/jira/browse/IVY-654

Gilles

2008/1/6, Kurt Roy <kroy@prospricing.com>:
>
> Hello,
>
>
>
> We need to integrate some new software being built by Maven into our
> main software being built with a homegrown, ant-based build system.
>
>
>
> We want to try pulling our Maven built artifacts into our main build
> system by using the Ivy dependency manager (using Maven ant lib is
> problematic in our environment, which I describe below).
>
>
>
> Our build environment:
>
>
>
> Our automated build system runs all builds from one UNIX user id whose
> home is on one shared drive. Every night, our build system can have up
> to 4 or 5 builds running concurrently under this one user id on the same
> or different machines (we are building about 20 different products every
> night that share many reusable components).
>
>
>
> My question is this:
>
>
>
> Can all these builds share the SAME default Ivy local cache stored in
> the one UNIX user id's home directory? I assume for reads this is not a
> problem. But what if two (or three) separate processes start downloading
> the same artifact to the local repository at the same time? Is this
> supported?
>
>
>
> We originally were going to just use the Maven ant tasks to pull in our
> new artifacts, but we found out that the Maven does not directly support
> concurrent process accesses to the Maven local repository. The suggested
> workarounds ranged from:
>
>
>
> 1.      using separate local repositories per product/version/build
> (creates duplication of repository data and another thing to maintain)
> 2.      Use a local repository mirror (need to research how exactly this
> will solve my problem),
> 3.      Developing some sort of "locking" ant task to synchronize access
> to the local repository (a new development task, needs to be done
> carefully).
>
>
>
> Before exploring the alternatives above, I just wanted to see if Ivy has
> the same problem - no support for concurrent access to the local cahce.
> If not, we may use it as the integration point between our Maven built
> software and our main software.
>
>
>
> Thanks in advance,
>
> Kurt Roy | PROS | Software Architect, Software Development
> phone: +1 713-335-8007 | email: kroy@prospricing.com
>
> Save the Date for the 14th Annual PROS Summit * April 20-23, 2008 at the
> Hilton Americas Hotel in Houston, Texas * www.prospricing.com
> <http://www.prospricing.com/>
>
>
>
>


-- 
Gilles Scokart

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