openstack/diskimage-builder
Code Issues Proposed changes

Namespace PYPI_MIRROR_URL vars with DIB

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We have a good pattern of namespacing env vars with DIB_. Add support
for DIB_PYPI_MIRROR_URL* and maintain backwards compat support.

Change-Id: I434c9d1b14cd571b20754c9ad7cd64c936f8399a
This commit is contained in:
Gregory Haynes 2015-02-05 16:30:25 -08:00 committed by vigneshvar
parent ed0ac6d617
commit 76ddfc439f
2 changed files with 22 additions and 14 deletions
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24
elements/pypi/README.rst
View File

@ -16,18 +16,18 @@ To disable the pypi.python.org index without using --offline (e.g. when working
behind a corporate firewall that prohibits pypi.python.org) set
DIB\_NO\_PYPI\_PIP to any non-empty value.
To use an arbitrary mirror set PYPI\_MIRROR\_URL=http[s]://somevalue/
To use an arbitrary mirror set DIB\_PYPI\_MIRROR\_URL=http[s]://somevalue/
Additional mirrors can be added by exporting PYPI\_MIRROR\_URL\_1=... etc. Only
the one mirror can be used by easy-install, but since wheels need to be in the
first mirror to be used, the last listed mirror is used as the pydistutils
index. NB: The sort order for these variables is a simple string sort - if
you have more than 9 additional mirrors, some care will be needed.
Additional mirrors can be added by exporting DIB\_PYPI\_MIRROR\_URL\_1=... etc.
Only the one mirror can be used by easy-install, but since wheels need to be in
the first mirror to be used, the last listed mirror is used as the pydistutils
index. NB: The sort order for these variables is a simple string sort - if you
have more than 9 additional mirrors, some care will be needed.
A typical use of this element is thus:
export PYPI\_MIRROR\_URL=http://site/pypi/Ubuntu-13.10
export PYPI\_MIRROR\_URL\_1=http://site/pypi/
export PYPI\_MIRROR\_URL\_2=file:///tmp/pypi
export DIB\_PYPI\_MIRROR\_URL=http://site/pypi/Ubuntu-13.10
export DIB\_PYPI\_MIRROR\_URL\_1=http://site/pypi/
export DIB\_PYPI\_MIRROR\_URL\_2=file:///tmp/pypi
[devpi-server](https://git.openstack.org/cgit/openstack-infra/pypi-mirro://pypi.python.org/pypi/devpi-server)
can be useful in making a partial PyPI mirror suitable for building images. For
@ -41,9 +41,9 @@ instance:
* Re-export your variables to point at the new mirror:
export PYPI\_MIRROR\_URL=http://machinename:3141/
unset PYPI\__MIRROR\_URL\_1
unset PYPI\__MIRROR\_URL\_1
export DIB\_PYPI\_MIRROR\_URL=http://machinename:3141/
unset DIB\_PYPI\__MIRROR\_URL\_1
unset DIB\_PYPI\__MIRROR\_URL\_2
The next time packages are installed, they'll be cached on the local devpi
server; subsequent runs pointed at the same mirror will use the local cache if

12
elements/pypi/pre-install.d/00-configure-pypi-mirror
View File

@ -21,8 +21,16 @@ def main():
home = os.path.expanduser("~")
backup_configs(home)
indices = []
if os.environ.get('PYPI_MIRROR_URL'):
candidates = [k for k in os.environ if k.startswith('PYPI_MIRROR_URL')]
if (os.environ.get('DIB_PYPI_MIRROR_URL') or
os.environ.get('PYPI_MIRROR_URL')):
candidates = [k for k in os.environ if
k.startswith('DIB_PYPI_MIRROR_URL')]
back_compat = [k for k in os.environ if
k.startswith('PYPI_MIRROR_URL')]
if len(back_compat) > 0:
print('DEPRECATION WARNING: Please use DIB_PYPI_MIRROR_URL* rather'
' than PYPI_MIRROR_URL*')
candidates += back_compat
indices = list(map(os.environ.get, sorted(candidates)))
else:
indices = ['file:///tmp/pypi']