97c01e48ed
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
61 lines
2.5 KiB
Bash
Executable file
61 lines
2.5 KiB
Bash
Executable file
#!/bin/bash
|
|
# These are useful, or at worst not harmful, for all images we build.
|
|
|
|
if [ ${DIB_DEBUG_TRACE:-1} -gt 0 ]; then
|
|
set -x
|
|
fi
|
|
set -eu
|
|
set -o pipefail
|
|
|
|
[ -n "$ARCH" ]
|
|
[ -n "$TARGET_ROOT" ]
|
|
|
|
shopt -s extglob
|
|
|
|
DIB_CLOUD_IMAGES=${DIB_CLOUD_IMAGES:-http://cloud-images.ubuntu.com}
|
|
DIB_RELEASE=${DIB_RELEASE:-trusty}
|
|
BASE_IMAGE_FILE=${BASE_IMAGE_FILE:-$DIB_RELEASE-server-cloudimg-$ARCH-root.tar.gz}
|
|
SHA256SUMS=${SHA256SUMS:-https://${DIB_CLOUD_IMAGES##http?(s)://}/$DIB_RELEASE/current/SHA256SUMS}
|
|
CACHED_FILE=$DIB_IMAGE_CACHE/$BASE_IMAGE_FILE
|
|
CACHED_FILE_LOCK=$DIB_IMAGE_CACHE/$BASE_IMAGE_FILE.lock
|
|
CACHED_SUMS=$DIB_IMAGE_CACHE/SHA256SUMS.ubuntu.$DIB_RELEASE.$ARCH
|
|
|
|
function get_ubuntu_tarball() {
|
|
if [ -n "$DIB_OFFLINE" -a -f "$CACHED_FILE" ] ; then
|
|
echo "Not checking freshness of cached $CACHED_FILE."
|
|
else
|
|
echo "Fetching Base Image"
|
|
$TMP_HOOKS_PATH/bin/cache-url $SHA256SUMS $CACHED_SUMS
|
|
$TMP_HOOKS_PATH/bin/cache-url \
|
|
$DIB_CLOUD_IMAGES/$DIB_RELEASE/current/$BASE_IMAGE_FILE $CACHED_FILE
|
|
pushd $DIB_IMAGE_CACHE
|
|
if ! grep "$BASE_IMAGE_FILE" $CACHED_SUMS | sha256sum --check - ; then
|
|
# It is likely that an upstream http(s) proxy has given us a skewed
|
|
# result - either a cached SHA file or a cached image. Use cache-busting
|
|
# to get (as long as caches are compliant...) fresh files.
|
|
# Try the sha256sum first, just in case that is the stale one (avoiding
|
|
# downloading the larger image), and then if the sums still fail retry
|
|
# the image.
|
|
$TMP_HOOKS_PATH/bin/cache-url -f $SHA256SUMS $CACHED_SUMS
|
|
if ! grep "$BASE_IMAGE_FILE" $CACHED_SUMS | sha256sum --check - ; then
|
|
$TMP_HOOKS_PATH/bin/cache-url -f \
|
|
$DIB_CLOUD_IMAGES/$DIB_RELEASE/current/$BASE_IMAGE_FILE $CACHED_FILE
|
|
grep "$BASE_IMAGE_FILE" $CACHED_SUMS | sha256sum --check -
|
|
fi
|
|
fi
|
|
popd
|
|
fi
|
|
# Extract the base image (use --numeric-owner to avoid UID/GID mismatch between
|
|
# image tarball and host OS e.g. when building Ubuntu image on an openSUSE host)
|
|
sudo tar -C $TARGET_ROOT --numeric-owner -xzf $DIB_IMAGE_CACHE/$BASE_IMAGE_FILE
|
|
}
|
|
|
|
(
|
|
echo "Getting $CACHED_FILE_LOCK: $(date)"
|
|
# Wait up to 20 minutes for another process to download
|
|
if ! flock -w 1200 9 ; then
|
|
echo "Did not get $CACHED_FILE_LOCK: $(date)"
|
|
exit 1
|
|
fi
|
|
get_ubuntu_tarball
|
|
) 9> $CACHED_FILE_LOCK
|