kubevela.github.io/static/script/install-kubectl-vela.sh

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#!/usr/bin/env bash
# Implemented based on Dapr Cli https://github.com/dapr/cli/tree/master/install
# Kubectl-Vela CLI location
: ${KUBECTL_VELA_INSTALL_DIR:="/usr/local/bin"}
# sudo is required to copy binary to KUBECTL_VELA_INSTALL_DIR for linux
: ${USE_SUDO:="false"}
# Http request CLI
KUBECTL_VELA_HTTP_REQUEST_CLI=curl
# GitHub Organization and repo name to download release
GITHUB_ORG=kubevela
GITHUB_REPO=kubevela
# Kubectl-Vela CLI filename
KUBECTL_VELA_CLI_FILENAME=kubectl-vela
KUBECTL_VELA_CLI_FILE="${KUBECTL_VELA_INSTALL_DIR}/${KUBECTL_VELA_CLI_FILENAME}"
getSystemInfo() {
ARCH=$(uname -m)
case $ARCH in
armv7*) ARCH="arm";;
aarch64) ARCH="arm64";;
x86_64) ARCH="amd64";;
esac
OS=$(echo `uname`|tr '[:upper:]' '[:lower:]')
if [ "$OS" == "linux" ] || [ "$OS" == "darwin" ]; then
if [ "$KUBECTL_VELA_INSTALL_DIR" == "/usr/local/bin" ]; then
USE_SUDO="true"
fi
fi
}
verifySupported() {
local supported=(darwin-amd64 darwin-arm64 linux-amd64 linux-arm linux-arm64)
local current_osarch="${OS}-${ARCH}"
for osarch in "${supported[@]}"; do
if [ "$osarch" == "$current_osarch" ]; then
echo "Your system is ${OS}_${ARCH}"
return
fi
done
echo "No prebuilt binary for ${current_osarch}"
exit 1
}
runAsRoot() {
local CMD="$*"
if [ $EUID -ne 0 -a $USE_SUDO = "true" ]; then
CMD="sudo $CMD"
fi
$CMD
}
checkHttpRequestCLI() {
if type "curl" > /dev/null; then
KUBECTL_VELA_HTTP_REQUEST_CLI=curl
elif type "wget" > /dev/null; then
KUBECTL_VELA_HTTP_REQUEST_CLI=wget
else
echo "Either curl or wget is required"
exit 1
fi
}
checkExistingKubectlVela() {
if [ -f "$KUBECTL_VELA_CLI_FILE" ]; then
echo -e "\nKubectl-Vela CLI is detected:"
$KUBECTL_VELA_CLI_FILE version
echo -e "Reinstalling Kubectl-Vela CLI - ${KUBECTL_VELA_CLI_FILE}...\n"
else
echo -e "Installing Kubectl-Vela CLI...\n"
fi
}
getLatestRelease() {
local velaReleaseUrl="https://api.github.com/repos/${GITHUB_ORG}/${GITHUB_REPO}/releases"
local latest_release=""
if [ "$KUBECTL_VELA_HTTP_REQUEST_CLI" == "curl" ]; then
latest_release=$(curl -s $velaReleaseUrl | grep \"tag_name\" | grep -v rc | awk 'NR==1{print $2}' | sed -n 's/\"\(.*\)\",/\1/p')
else
latest_release=$(wget -q --header="Accept: application/json" -O - $velaReleaseUrl | grep \"tag_name\" | grep -v rc | awk 'NR==1{print $2}' | sed -n 's/\"\(.*\)\",/\1/p')
fi
if [[ ! "$latest_release" =~ ^v[\.0-9]+$ ]]; then
echo "Failed to get latest release tag."
exit 1
fi
ret_val=$latest_release
}
downloadFile() {
LATEST_RELEASE_TAG=$1
KUBECTL_VELA_CLI_ARTIFACT="${KUBECTL_VELA_CLI_FILENAME}-${LATEST_RELEASE_TAG}-${OS}-${ARCH}.tar.gz"
# convert `-` to `_` to let it work
DOWNLOAD_BASE="https://github.com/${GITHUB_ORG}/${GITHUB_REPO}/releases/download"
DOWNLOAD_URL="${DOWNLOAD_BASE}/${LATEST_RELEASE_TAG}/${KUBECTL_VELA_CLI_ARTIFACT}"
# Create the temp directory
KUBECTL_VELA_TMP_ROOT=$(mktemp -dt kubectl-vela-install-XXXXXX)
ARTIFACT_TMP_FILE="$KUBECTL_VELA_TMP_ROOT/$KUBECTL_VELA_CLI_ARTIFACT"
echo "Downloading $DOWNLOAD_URL ..."
if [ "$KUBECTL_VELA_HTTP_REQUEST_CLI" == "curl" ]; then
curl -SsL "$DOWNLOAD_URL" -o "$ARTIFACT_TMP_FILE"
else
wget -q -O "$ARTIFACT_TMP_FILE" "$DOWNLOAD_URL"
fi
if [ ! -f "$ARTIFACT_TMP_FILE" ]; then
echo "failed to download $DOWNLOAD_URL ..."
exit 1
fi
}
installFile() {
tar xf "$ARTIFACT_TMP_FILE" -C "$KUBECTL_VELA_TMP_ROOT"
local tmp_root_kubectl_vela_cli="$KUBECTL_VELA_TMP_ROOT/${OS}-${ARCH}/$KUBECTL_VELA_CLI_FILENAME"
if [ ! -f "$tmp_root_kubectl_vela_cli" ]; then
echo "Failed to unpack Kubectl-Vela CLI executable."
exit 1
fi
chmod o+x $tmp_root_kubectl_vela_cli
runAsRoot cp "$tmp_root_kubectl_vela_cli" "$KUBECTL_VELA_INSTALL_DIR"
if [ -f "$KUBECTL_VELA_CLI_FILE" ]; then
echo "$KUBECTL_VELA_CLI_FILENAME installed into $KUBECTL_VELA_INSTALL_DIR successfully."
$KUBECTL_VELA_CLI_FILE --version
else
echo "Failed to install $KUBECTL_VELA_CLI_FILENAME"
exit 1
fi
}
fail_trap() {
result=$?
if [ "$result" != "0" ]; then
echo "Failed to install Kubectl-Vela CLI"
echo "For support, go to https://kubevela.io"
fi
cleanup
exit $result
}
cleanup() {
if [[ -d "${KUBECTL_VELA_TMP_ROOT:-}" ]]; then
rm -rf "$KUBECTL_VELA_TMP_ROOT"
fi
}
installCompleted() {
echo -e "\nTo get started with KubeVela, please visit https://kubevela.io"
}
# -----------------------------------------------------------------------------
# main
# -----------------------------------------------------------------------------
trap "fail_trap" EXIT
getSystemInfo
verifySupported
checkExistingKubectlVela
checkHttpRequestCLI
if [ -z "$1" ]; then
echo "Getting the latest Kubectl-Vela CLI..."
getLatestRelease
else
ret_val=v$1
fi
echo "Installing $ret_val Kubectl-Vela CLI..."
downloadFile $ret_val
installFile
cleanup
installCompleted