Currently we have all our elements and library files in a top-level
directory and install them into
<root>/share/diskimage-builder/[elements|lib] (where root is either /
or the root of a virtualenv).
The problem with this is that editable/development installs (pip -e)
do *not* install data_files. Thus we have no canonical location to
look for elements -- leading to the various odd things we do such as a
whole bunch of guessing at the top of disk-image-create and having a
special test-loader in tests/test_elements.py so we can run python
unit tests on those elements that have it.
data_files is really the wrong thing to use for what are essentially
assets of the program. data_files install works well for things like
config-files, init.d files or dropping documentation files.
By moving the elements under the diskimage_builder package, we always
know where they are relative to where we import from. In fact,
pkg_resources has an api for this which we wrap in the new
diskimage_builder/paths.py helper [1].
We use this helper to find the correct path in the couple of places we
need to find the base-elements dir, and for the paths to import the
library shell functions.
Elements such as svc-map and pkg-map include python unit-tests, which
we do not need tests/test_elements.py to special-case load any more.
They just get found automatically by the normal subunit loader.
I have a follow-on change (I69ca3d26fede0506a6353c077c69f735c8d84d28)
to move disk-image-create to a regular python entry-point.
Unfortunately, this has to move to work with setuptools. You'd think
a symlink under diskimage_builder/[elements|lib] would work, but it
doesn't.
[1] this API handles stuff like getting files out of .zip archive
modules, which we don't do. Essentially for us it's returning
__file__.
Change-Id: I5e3e3c97f385b1a4ff2031a161a55b231895df5b
Every platform has a different name for their DHCP client, so use a
generic name "dhcp-client" in the package name and let everyone choose
their sub-name. This also brings some consistency across simple-init
& dhcp-all-interfaces
Change-Id: I797aa7aacb13dfb7f35700463dc11d55552eb108
Newer distros, such as debian jessie and ubuntu xenial, do not provide
ifupdown by default, but simple-init depends on it. Add it to the pile.
Change-Id: I6f4876863c67c65a82464d4e0593015cdc839c5c
We currently install pip from package in the simple-init element.
We should really allow users to select whether to install pip from
git or package.
Change-Id: Ia5e62b9635af90d81227274a1dd8f20474cdbf73
If you don't want cloud-init, you may need to get a few things
from config-drive because you may be operating on a cloud with no DHCP.
In that case, simply reading some values from config-drive and writing
out either DHCP or static network info, in addition to grabbing ssh keys
is helpful. Both Infra and bifrost want this for their images.
Co-Authored-By: Gregory Haynes <greg@greghaynes.net>
Change-Id: I2746ed256b9783eab058b803130d3ccac484eaeb
