diskimage-builder/diskimage_builder/elements/centos/root.d/10-centos-cloud-image
Carlos Goncalves 1f9619cdb5 Download latest CentOS cloud image
DIB was retrieving the oldest cloud image file which, presently, means
retrieving CentOS 8.1 instead of CentOS 8.2. Even though DIB runs a
system update and so catches up to latest, this takes bandwidth, time
and final image space (8.1 + system update = 765M qcow2, vs 8.2 + system
update = 518M qcow2).

This patch fixes that by taking the first image name in a descending
order list.

Change-Id: I648fe19f1f76c03c97492b6ac7be6381f6f9261b
2020-06-22 11:03:36 +02:00

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#!/bin/bash
if [ ${DIB_DEBUG_TRACE:-0} -gt 0 ]; then
set -x
fi
set -eu
set -o pipefail
[ -n "$ARCH" ]
[ -n "$TARGET_ROOT" ]
if [[ "${DIB_RELEASE}" = 7 ]]; then
if [[ "amd64 x86_64" =~ "$ARCH" ]]; then
ARCH="x86_64"
DIB_CLOUD_IMAGES=${DIB_CLOUD_IMAGES:-http://cloud.centos.org/centos/${DIB_RELEASE}/images}
elif [[ "arm64 aarch64" =~ "$ARCH" ]]; then
ARCH="aarch64"
DIB_CLOUD_IMAGES=${DIB_CLOUD_IMAGES:-http://cloud.centos.org/altarch/${DIB_RELEASE}/images/aarch64}
elif [[ "ppc64le" =~ "$ARCH" ]]; then
DIB_CLOUD_IMAGES=${DIB_CLOUD_IMAGES:-http://cloud.centos.org/altarch/${DIB_RELEASE}/images/ppc64le}
else
echo 'centos root element only support the x86_64, aarch64 and ppc64le values for $ARCH'
exit 1
fi
else
if [[ "amd64 x86_64 arm64 aarch64 ppc64le" =~ "$ARCH" ]]; then
if [[ "amd64" =~ "$ARCH" ]]; then
ARCH="x86_64"
elif [[ "arm64" =~ "$ARCH" ]]; then
ARCH="aarch64"
fi
DIB_CLOUD_IMAGES=${DIB_CLOUD_IMAGES:-http://cloud.centos.org/centos/${DIB_RELEASE}/${ARCH}/images}
else
echo 'centos root element only support the x86_64, aarch64 and ppc64le values for $ARCH'
exit 1
fi
fi
DIB_LOCAL_IMAGE=${DIB_LOCAL_IMAGE:-}
if [ -n "$DIB_LOCAL_IMAGE" ]; then
IMAGE_LOCATION=$DIB_LOCAL_IMAGE
# No need to copy a local image into the cache directory, so just specify
# the cached path as the original path.
CACHED_IMAGE=$IMAGE_LOCATION
BASE_IMAGE_FILE=$(basename $DIB_LOCAL_IMAGE)
BASE_IMAGE_TAR=$BASE_IMAGE_FILE.tgz
else
DIB_FLAVOR=${DIB_FLAVOR:-GenericCloud}
if [[ "${DIB_RELEASE}" = 7 ]]; then
BASE_IMAGE_FILE=${BASE_IMAGE_FILE:-CentOS-${DIB_RELEASE}-${ARCH}-${DIB_FLAVOR}.qcow2.xz}
else
LATEST_IMAGE_FILE=$(curl -s https://cloud.centos.org/centos/${DIB_RELEASE}/${ARCH}/images/ | grep -o "CentOS-${DIB_RELEASE}-${DIB_FLAVOR}-.[^>]*.qcow2" | sort -r | head -1)
BASE_IMAGE_FILE=${BASE_IMAGE_FILE:-$LATEST_IMAGE_FILE}
fi
BASE_IMAGE_TAR=$BASE_IMAGE_FILE.tgz
IMAGE_LOCATION=$DIB_CLOUD_IMAGES/$BASE_IMAGE_FILE
CACHED_IMAGE=$DIB_IMAGE_CACHE/$BASE_IMAGE_FILE
fi
$TMP_HOOKS_PATH/bin/extract-image $BASE_IMAGE_FILE $BASE_IMAGE_TAR $IMAGE_LOCATION $CACHED_IMAGE