diskimage-builder/diskimage_builder/elements/ubuntu/root.d/10-cache-ubuntu-tarball
Marco Vaschetto 443305ab61 Allowing ubuntu element use local image
Patch allow to set path for local image source,
instead download latest or use the cached image.
This permit to build image also in environment without internet access.

re-propose of patch: https://review.opendev.org/c/openstack/diskimage-builder/+/809009

Change-Id: I54395b09af339caee040326b809e8fbf8b0e7d6a
2021-11-17 20:34:48 +01:00

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#!/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 "$TARGET_ROOT" ]
shopt -s extglob
DIB_RELEASE=${DIB_RELEASE:-trusty}
DIB_CLOUD_IMAGES=${DIB_CLOUD_IMAGES:-http://cloud-images.ubuntu.com/$DIB_RELEASE/current}
if [ $DIB_RELEASE != "trusty" ] ; then
BASE_IMAGE_FILE=${BASE_IMAGE_FILE:-$DIB_RELEASE-server-cloudimg-$ARCH.squashfs}
else
BASE_IMAGE_FILE=${BASE_IMAGE_FILE:-$DIB_RELEASE-server-cloudimg-$ARCH-root.tar.gz}
fi
SHA256SUMS=${SHA256SUMS:-https://${DIB_CLOUD_IMAGES##http?(s)://}/SHA256SUMS}
CACHED_FILE=$DIB_IMAGE_CACHE/$BASE_IMAGE_FILE
CACHED_FILE_LOCK=$DIB_LOCKFILES/$BASE_IMAGE_FILE.lock
CACHED_SUMS=$DIB_IMAGE_CACHE/SHA256SUMS.ubuntu.$DIB_RELEASE.$ARCH
function get_ubuntu_tarball() {
if [ -n "$DIB_LOCAL_IMAGE" ] ; then
echo "Using local image without download"
if [ ! -f "$DIB_LOCAL_IMAGE" ] ; then
echo "Unable to find image $DIB_LOCAL_IMAGE locally! Check path and file name to source image"
exit 1
fi
IMAGE_PATH=$DIB_LOCAL_IMAGE
else
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 \
$DIB_CLOUD_IMAGES/$BASE_IMAGE_FILE $CACHED_FILE
pushd $DIB_IMAGE_CACHE
if ! grep "$BASE_IMAGE_FILE" $CACHED_SUMS | sha256sum --check - ; then
$TMP_HOOKS_PATH/bin/cache-url -f \
$DIB_CLOUD_IMAGES/$BASE_IMAGE_FILE $CACHED_FILE
grep "$BASE_IMAGE_FILE" $CACHED_SUMS | sha256sum --check -
fi
fi
IMAGE_PATH=$DIB_IMAGE_CACHE/$BASE_IMAGE_FILE
fi
# Extract the base image (use --numeric-owner to avoid UID/GID mismatch between
# image tarball and host OS e.g. when building Ubuntu image on an openSUSE host)
if [ "$DIB_RELEASE" != "trusty" ] ; then
sudo unsquashfs -f -d $TARGET_ROOT $IMAGE_PATH
else
sudo tar -C $TARGET_ROOT --numeric-owner -xzf $IMAGE_PATH
fi
}
(
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