Experimental Physics and
Industrial Control System

"Konrad, Martin" <[email protected]> · Wed, 16 Nov 2016 23:39:19 +0000

Hi Kay,
> First we moved all the 3rd party JARs into their own source 
> repository. Then we switched to using Maven as a build system, and 
> removed many of the 3rd party binaries from our source repos.
A good choice :-)

> Maven downloads the 3rd party libraries from somewhere on the
> internet.
That's maybe the best you can do for beginners but in our day to day
work at FRIB we also saw lots off issues with remote
repositories/download servers not being available/having issues. We are
now mirroring all our dependencies to internal repositories/web servers.
I haven't heard of any problems lately and as a side effect this is much
faster :-)

> There are days where it can't find them, or it picks a newer version
>  because we didn't take enough care to specify the exact version that
>  we need.
Managing a long list of dependencies is a lot of work. With my Puppet
code I often find it easier to specify the versions of 3rd party modules
explicitly and from time to time bump them up all at the same time
(after testing!). Keep in mind that you might miss important security
updates if you do so.

-Martin

-- 
Martin Konrad
Control System Engineer
Facility for Rare Isotope Beams
Michigan State University
640 South Shaw Lane
East Lansing, MI 48824-1321, USA
Tel. 517-908-7253
Email: [email protected]

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System