Rename gotk binary to flux
Signed-off-by: Hidde Beydals <hello@hidde.co>
This commit is contained in:
Hidde Beydals
186
install/flux.sh
Executable file
186
install/flux.sh
Executable file
@@ -0,0 +1,186 @@
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#!/usr/bin/env bash
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set -e
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DEFAULT_BIN_DIR="/usr/local/bin"
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BIN_DIR=${1:-"${DEFAULT_BIN_DIR}"}
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GITHUB_REPO="fluxcd/toolkit"
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# Helper functions for logs
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info() {
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echo '[INFO] ' "$@"
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}
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warn() {
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echo '[WARN] ' "$@" >&2
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}
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fatal() {
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echo '[ERROR] ' "$@" >&2
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exit 1
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}
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# Set os, fatal if operating system not supported
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setup_verify_os() {
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if [[ -z "${OS}" ]]; then
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OS=$(uname)
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fi
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case ${OS} in
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Darwin)
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OS=darwin
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;;
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Linux)
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OS=linux
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;;
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*)
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fatal "Unsupported operating system ${OS}"
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esac
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}
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# Set arch, fatal if architecture not supported
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setup_verify_arch() {
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if [[ -z "${ARCH}" ]]; then
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ARCH=$(uname -m)
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fi
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case ${ARCH} in
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arm64)
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ARCH=arm64
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;;
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amd64)
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ARCH=amd64
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;;
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x86_64)
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ARCH=amd64
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;;
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*)
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fatal "Unsupported architecture ${ARCH}"
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esac
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}
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# Verify existence of downloader executable
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verify_downloader() {
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# Return failure if it doesn't exist or is no executable
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[[ -x "$(which "$1")" ]] || return 1
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# Set verified executable as our downloader program and return success
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DOWNLOADER=$1
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return 0
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}
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# Create tempory directory and cleanup when done
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setup_tmp() {
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TMP_DIR=$(mktemp -d -t flux-install.XXXXXXXXXX)
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TMP_METADATA="${TMP_DIR}/flux.json"
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TMP_HASH="${TMP_DIR}/flux.hash"
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TMP_BIN="${TMP_DIR}/flux.tar.gz"
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cleanup() {
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code=$?
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set +e
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trap - EXIT
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rm -rf "${TMP_DIR}"
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exit ${code}
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}
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trap cleanup INT EXIT
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}
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# Find version from Github metadata
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get_release_version() {
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METADATA_URL="https://api.github.com/repos/${GITHUB_REPO}/releases/latest"
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info "Downloading metadata ${METADATA_URL}"
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download "${TMP_METADATA}" "${METADATA_URL}"
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VERSION_FLUX=$(grep '"tag_name":' "${TMP_METADATA}" | sed -E 's/.*"([^"]+)".*/\1/' | cut -c 2-)
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if [[ -n "${VERSION_FLUX}" ]]; then
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info "Using ${VERSION_FLUX} as release"
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else
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fatal "Unable to determine release version"
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fi
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}
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# Download from file from URL
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download() {
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[[ $# -eq 2 ]] || fatal 'download needs exactly 2 arguments'
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case $DOWNLOADER in
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curl)
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curl -o "$1" -sfL "$2"
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;;
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wget)
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wget -qO "$1" "$2"
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;;
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*)
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fatal "Incorrect executable '${DOWNLOADER}'"
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;;
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esac
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# Abort if download command failed
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[[ $? -eq 0 ]] || fatal 'Download failed'
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}
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# Download hash from Github URL
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download_hash() {
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HASH_URL="https://github.com/${GITHUB_REPO}/releases/download/v${VERSION_FLUX}/toolkit_${VERSION_FLUX}_checksums.txt"
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info "Downloading hash ${HASH_URL}"
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download "${TMP_HASH}" "${HASH_URL}"
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HASH_EXPECTED=$(grep " flux_${VERSION_FLUX}_${OS}_${ARCH}.tar.gz$" "${TMP_HASH}")
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HASH_EXPECTED=${HASH_EXPECTED%%[[:blank:]]*}
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}
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# Download binary from Github URL
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download_binary() {
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BIN_URL="https://github.com/${GITHUB_REPO}/releases/download/v${VERSION_FLUX}/flux_${VERSION_FLUX}_${OS}_${ARCH}.tar.gz"
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info "Downloading binary ${BIN_URL}"
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download "${TMP_BIN}" "${BIN_URL}"
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}
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compute_sha256sum() {
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cmd=$(which sha256sum shasum | head -n 1)
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case $(basename "$cmd") in
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sha256sum)
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sha256sum "$1" | cut -f 1 -d ' '
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;;
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shasum)
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shasum -a 256 "$1" | cut -f 1 -d ' '
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;;
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*)
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fatal "Can not find sha256sum or shasum to compute checksum"
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;;
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esac
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}
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# Verify downloaded binary hash
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verify_binary() {
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info "Verifying binary download"
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HASH_BIN=$(compute_sha256sum "${TMP_BIN}")
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HASH_BIN=${HASH_BIN%%[[:blank:]]*}
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if [[ "${HASH_EXPECTED}" != "${HASH_BIN}" ]]; then
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fatal "Download sha256 does not match ${HASH_EXPECTED}, got ${HASH_BIN}"
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fi
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}
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# Setup permissions and move binary
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setup_binary() {
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chmod 755 "${TMP_BIN}"
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info "Installing flux to ${BIN_DIR}/flux"
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tar -xzf "${TMP_BIN}" -C "${TMP_DIR}"
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local CMD_MOVE="mv -f \"${TMP_DIR}/flux\" \"${BIN_DIR}\""
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if [[ -w "${BIN_DIR}" ]]; then
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eval "${CMD_MOVE}"
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else
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eval "sudo ${CMD_MOVE}"
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fi
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}
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# Run the install process
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{
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setup_verify_os
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setup_verify_arch
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verify_downloader curl || verify_downloader wget || fatal 'Can not find curl or wget for downloading files'
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setup_tmp
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get_release_version
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download_hash
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download_binary
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verify_binary
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setup_binary
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}
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