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Always bind-mount pypi mirror if dir exists

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It may be desirable to specify file://tmp/pypi as one of the list
of mirrors specified by PYPI_MIRROR_URL, so the local pypi mirror
should be mounted as long as the directory exists.

Even though the path is mounted, it is only used by pip if there is
no specified PYPI_MIRROR_URL, or if one PYPI_MIRROR_URL entry
specifies file://tmp/pypi.

The pypi element previously assumed that a local mirror would be
a complete offline mirror. This change allows for a mixture of
local mirror plus remote mirrors. This means that the local
mirror could (for example) contain a few locally built pip packages
from arbitrary git checkouts for gate testing of those projects.
In this scenario, most packages would be downloaded from the
configured remote mirrors.

This change is required for synchronous gating on the os-*-config
tools.

Change-Id: I0f6d153c06993ffd0d90bd8ca1717462e8b6b541
This commit is contained in:
Steve Baker 2014-05-26 14:20:50 +12:00
parent 20879b2ec9
commit e822a0ff5a
2 changed files with 9 additions and 10 deletions
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6
elements/pypi/README.md
View File

@ -2,8 +2,9 @@ Inject a PyPI mirror
====================
Use a custom PyPI mirror to build images. The default is to bind mount one from
~/.cache/image-create/pypi/mirror into the build environment. The element
temporarily overwrites /root/.pip.conf and .pydistutils.cfg to use it.
~/.cache/image-create/pypi/mirror into the build environment as mirror URL
file:///tmp/pypi. The element temporarily overwrites /root/.pip.conf
and .pydistutils.cfg to use it.
When online, the official pypi.python.org pypi index is supplied as an
extra-url, so uncached dependencies will still be available. When offline, only
@ -23,6 +24,7 @@ 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
[pypi-mirror](https://git.openstack.org/cgit/openstack-infra/pypi-mirror) can
be useful in making a partial PyPI mirror suitable for building images. For

9
elements/pypi/extra-data.d/00-mount-pypi-mirror
View File

@ -3,13 +3,10 @@
set -eu
set -o pipefail
PYPI_MIRROR_URL=${PYPI_MIRROR_URL:-''}
if [ -n "$PYPI_MIRROR_URL" ]; then
# External mirror URL being used - no need to bind mount anything.
exit 0
fi
MIRROR_SOURCE=~/.cache/image-create/pypi/mirror/
if [ -d "$MIRROR_SOURCE" ]; then
MIRROR_TARGET=$TMP_MOUNT_PATH/tmp/pypi
sudo mkdir -p $MIRROR_SOURCE $MIRROR_TARGET
sudo mount --bind $MIRROR_SOURCE $TMP_MOUNT_PATH/tmp/pypi
sudo mount --bind $MIRROR_SOURCE $MIRROR_TARGET
fi