Merge lp:~zyga/lava-core/utils-interface into lp:lava-core

[Zygmunt Krynicki]

This branch adds the old interface module from lava-utils-interface (see below for details about that piece of code). Originally it was a standalone pypi package (and still is) but to simplify development of lava-core I've decided to just put it in lava-core directly. Namespace packages still cause pip and setuptools to mis-communicate, this causes odd import failures where python runtime sees only some of the namespaces packages, depending on order of installation. Note that I deliberately left out lava-utils-interface directory in the top of the tree. Once lava-core merge process is complete and we don't need to release any of the old components anymore they can be safely removed.

Quote of the commit message:

  Add lava.core.utils module

  This module will contain various small utilities that don't warrant a dedicated
  module for themselves.

  This patch adds the well-known Interface class that makes abc.ABCMeta usage a
  little less scary. The Interface class (or the equivalent copy from
  lava-utils-interface package before lava-core was introduced) is used
  throughout LAVA to document extensible pieces and ensure API conformance. The
  Interface class is expected to be used with the standard python library abc
  module and the assorted collection of decorators it provides. All of the
  interfaces used by lava-core will be defined in the upcoming
  lava.core.interfaces module.

[Michael Hudson-Doyle (mwhudson)]

This one seems boringly fine :-)

Cheers,
mwh

[lp:~zyga/lava-core/utils-interface]

8. By Zygmunt Krynicki on 2012-05-16

Infrastructure for history and logging

9. By Zygmunt Krynicki on 2012-05-18

Infrastructure for plugins

10. By Zygmunt Krynicki on 2012-05-19

Add lava.core.utils module

This module will contain various small utilities that don't warrant a dedicated
module for themselves.

This patch adds the well-known Interface class that makes abc.ABCMeta usage a
little less scary. The Interface class (or the equivalent copy from
lava-utils-interface package before lava-core was introduced) is used
throughout LAVA to document extensible pieces and ensure API conformance. The
Interface class is expected to be used with the standard python library abc
module and the assorted collection of decorators it provides. All of the
interfaces used by lava-core will be defined in the upcoming
lava.core.interfaces module.