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Translate a published version like 'release/stable' to version number

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This commit is contained in:
Lukasz Zajaczkowski 2016-11-04 14:05:40 +01:00
parent aa8a03ef07
commit 0ea13c6495
1 changed files with 42 additions and 18 deletions
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60
cluster/get-kube.sh
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@ -63,7 +63,31 @@ set -o errexit
set -o nounset
set -o pipefail
KUBERNETES_RELEASE_URL="${KUBERNETES_RELEASE_URL:-https://storage.googleapis.com/kubernetes-release/release}"
# If KUBERNETES_RELEASE_URL is overridden but KUBERNETES_CI_RELEASE_URL is not then set KUBERNETES_CI_RELEASE_URL to KUBERNETES_RELEASE_URL.
KUBERNETES_CI_RELEASE_URL="${KUBERNETES_CI_RELEASE_URL:-${KUBERNETES_RELEASE_URL:-https://dl.k8s.io/ci}}"
KUBERNETES_RELEASE_URL="${KUBERNETES_RELEASE_URL:-https://dl.k8s.io}"
KUBE_RELEASE_VERSION_REGEX="^v(0|[1-9][0-9]*)\\.(0|[1-9][0-9]*)\\.(0|[1-9][0-9]*)(-(beta|alpha)\\.(0|[1-9][0-9]*))?$"
KUBE_CI_VERSION_REGEX="^v(0|[1-9][0-9]*)\\.(0|[1-9][0-9]*)\\.(0|[1-9][0-9]*)-(beta|alpha)\\.(0|[1-9][0-9]*)(\\.(0|[1-9][0-9]*)\\+[-0-9a-z]*)?$"
# Sets KUBE_VERSION variable if an explicit version number was provided (e.g. "v1.0.6",
# "v1.2.0-alpha.1.881+376438b69c7612") or resolves the "published" version
# <path>/<version> (e.g. "release/stable",' "ci/latest-1") by reading from GCS.
#
# See the docs on getting builds for more information about version
# publication.
#
# Args:
# $1 version string from command line
# Vars set:
# KUBE_VERSION
function set_binary_version() {
if [[ "${1}" =~ "/" ]]; then
KUBE_VERSION=$(curl -fL "https://dl.k8s.io/${1}.txt")
else
KUBE_VERSION=${1}
fi
}
# Use the script from inside the Kubernetes tarball to fetch the client and
# server binaries (if not included in kubernetes.tar.gz).
@ -110,18 +134,6 @@ if [[ -d "./kubernetes" ]]; then
fi
fi
function get_latest_version_number {
local -r latest_url="https://storage.googleapis.com/kubernetes-release/release/stable.txt"
if [[ $(which wget) ]]; then
wget -qO- "${latest_url}"
elif [[ $(which curl) ]]; then
curl -sSfL --retry 3 --keepalive-time 2 "${latest_url}"
else
echo "Couldn't find curl or wget. Bailing out." >&2
exit 4
fi
}
# TODO: remove client checks once kubernetes.tar.gz no longer includes client
# binaries by default.
kernel=$(uname -s)
@ -162,21 +174,33 @@ case "${machine}" in
esac
file=kubernetes.tar.gz
release=${KUBERNETES_RELEASE:-$(get_latest_version_number)}
release_url="${KUBERNETES_RELEASE_URL}/${release}/${file}"
release=${KUBERNETES_RELEASE:-"release/stable"}
# Validate Kubernetes release version.
# Translate a published version <bucket>/<version> (e.g. "release/stable") to version number.
set_binary_version "${release}"
if [[ ${KUBE_VERSION} =~ ${KUBE_RELEASE_VERSION_REGEX} ]]; then
release_url="${KUBERNETES_RELEASE_URL}/${KUBE_VERSION}/${file}"
elif [[ ${KUBE_VERSION} =~ ${KUBE_CI_VERSION_REGEX} ]]; then
release_url="${KUBERNETES_CI_RELEASE_URL}/${KUBE_VERSION}/${file}"
else
echo "Version doesn't match regexp" >&2
exit 1
fi
need_download=true
if [[ -r "${PWD}/${file}" ]]; then
downloaded_version=$(tar -xzOf "${PWD}/${file}" kubernetes/version 2>/dev/null || true)
echo "Found preexisting ${file}, release ${downloaded_version}"
if [[ "${downloaded_version}" == "${release}" ]]; then
if [[ "${downloaded_version}" == "${KUBE_VERSION}" ]]; then
echo "Using preexisting kubernetes.tar.gz"
need_download=false
fi
fi
if "${need_download}"; then
echo "Downloading kubernetes release ${release}"
echo "Downloading kubernetes release ${KUBE_VERSION}"
echo " from ${release_url}"
echo " to ${PWD}/${file}"
fi
@ -212,7 +236,7 @@ if "${need_download}"; then
fi
fi
echo "Unpacking kubernetes release ${release}"
echo "Unpacking kubernetes release ${KUBE_VERSION}"
rm -rf "${PWD}/kubernetes"
tar -xzf ${file}