Fetchez le Python

January 30, 2008

Buildout: plone.org and pypi.python.org are acting like SPOF

Filed under: plone, python, windows, zope — Tarek Ziadé @ 9:20 am
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Yesterday, plone.org was moved on another server. It was an horrible day for our people here that didn’t have a local cache of eggs to build their instances. So plone.org was acting like a Single Point Of Failure(SPOF) for some packages.

A few developers, that are under windows, were even having permission denied errors on their buildout because when a package is badly downloaded is not correctly crushed before a new attempt (I need to add a ticket about this in setuptools tracker I guess).

Anyway, we decided to create a mirror here, (I am buiding it at http://release.ingeniweb.com/ this morning hopefully) to avoid such problems.

This makes me think that zc.buildout should introduce a high-level mirror mechanism in the find-links variable, that would let someone explicitely provide a list of mirror. It could look like this:

find-links =
  http://pypi.python.org/simple |  http://release.ingeniweb.com/pypi-mirror
  http://dist.plone.org |  http://release.ingeniweb.com/plone-dist-mirror

It could be used to switch the find-links values sent to setuptools when the primary url is down by attempting a simple call with a timeout.

3 Comments »

  1. Great this post……

    But I need to do the same, my internet connection is very bad…

    How to create a local mirror?

    are you using rsync?

    Comment by macagua — September 16, 2008 @ 3:48 pm | Reply

  2. How is the size of the repository in GigaByte?

    Comment by macagua — September 16, 2008 @ 4:03 pm | Reply

  3. @macagua: you can use rsync or z3c.pypimirror.

    Also, consider using iw.eggprowy, a little twisted application that acts like a proxy and gets only the package you ask for (see http://pypi.python.org/pypi/iw.eggproxy)

    a full PyPI is 5 gigabytes at this time, but iw.eggproxy is making it real small.

    Comment by Tarek Ziadé — September 17, 2008 @ 8:19 am | Reply


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