From 06a5eb2272f26fcdb2bd5abf5abe45d7078b5e50 Mon Sep 17 00:00:00 2001 From: Matthew Fisher Date: Tue, 12 Nov 2019 18:11:56 -0800 Subject: [PATCH] fix(get): install Helm v2.16.1 This is a temporary fix. This prevents the get script from installing Helm 3 as soon as it's released, potentially causing disruption to users that were expecting a Helm 2 release. A `get-helm-3` script is also supplied, which is identical to the previous `get` script. That way, Helm 3 users also have an equivalent way to install Helm 3. Signed-off-by: Matthew Fisher --- scripts/get | 6 +- scripts/get-helm-3 | 245 +++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 249 insertions(+), 2 deletions(-) create mode 100755 scripts/get-helm-3 diff --git a/scripts/get b/scripts/get index 3f645f807..a264f8f76 100755 --- a/scripts/get +++ b/scripts/get @@ -187,7 +187,7 @@ testVersion() { help () { echo "Accepted cli arguments are:" echo -e "\t[--help|-h ] ->> prints this help" - echo -e "\t[--version|-v ] . When not defined it defaults to latest" + echo -e "\t[--version|-v ]" echo -e "\te.g. --version v2.4.0 or -v latest" echo -e "\t[--no-sudo] ->> install without sudo" } @@ -213,7 +213,9 @@ while [[ $# -gt 0 ]]; do '--version'|-v) shift if [[ $# -ne 0 ]]; then - export DESIRED_VERSION="${1}" + # FIXME(bacongobbler): hard code the desired version for the time being. + # A better fix would be to filter for Helm 2 release pages. + export DESIRED_VERSION="${1:="v2.16.1"}" else echo -e "Please provide the desired version. e.g. --version v2.4.0 or -v latest" exit 0 diff --git a/scripts/get-helm-3 b/scripts/get-helm-3 new file mode 100755 index 000000000..3f645f807 --- /dev/null +++ b/scripts/get-helm-3 @@ -0,0 +1,245 @@ +#!/usr/bin/env bash + +# Copyright The Helm Authors. +# +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. + +# The install script is based off of the MIT-licensed script from glide, +# the package manager for Go: https://github.com/Masterminds/glide.sh/blob/master/get + +PROJECT_NAME="helm" +TILLER_NAME="tiller" + +: ${USE_SUDO:="true"} +: ${HELM_INSTALL_DIR:="/usr/local/bin"} + +# initArch discovers the architecture for this system. +initArch() { + ARCH=$(uname -m) + case $ARCH in + armv5*) ARCH="armv5";; + armv6*) ARCH="armv6";; + armv7*) ARCH="arm";; + aarch64) ARCH="arm64";; + x86) ARCH="386";; + x86_64) ARCH="amd64";; + i686) ARCH="386";; + i386) ARCH="386";; + esac +} + +# initOS discovers the operating system for this system. +initOS() { + OS=$(echo `uname`|tr '[:upper:]' '[:lower:]') + + case "$OS" in + # Minimalist GNU for Windows + mingw*) OS='windows';; + esac +} + +# runs the given command as root (detects if we are root already) +runAsRoot() { + local CMD="$*" + + if [ $EUID -ne 0 -a $USE_SUDO = "true" ]; then + CMD="sudo $CMD" + fi + + $CMD +} + +# verifySupported checks that the os/arch combination is supported for +# binary builds. +verifySupported() { + local supported="darwin-386\ndarwin-amd64\nlinux-386\nlinux-amd64\nlinux-arm\nlinux-arm64\nlinux-ppc64le\nwindows-386\nwindows-amd64" + if ! echo "${supported}" | grep -q "${OS}-${ARCH}"; then + echo "No prebuilt binary for ${OS}-${ARCH}." + echo "To build from source, go to https://github.com/helm/helm" + exit 1 + fi + + if ! type "curl" > /dev/null && ! type "wget" > /dev/null; then + echo "Either curl or wget is required" + exit 1 + fi +} + +# checkDesiredVersion checks if the desired version is available. +checkDesiredVersion() { + if [ "x$DESIRED_VERSION" == "x" ]; then + # Get tag from release URL + local latest_release_url="https://github.com/helm/helm/releases/latest" + if type "curl" > /dev/null; then + TAG=$(curl -Ls -o /dev/null -w %{url_effective} $latest_release_url | grep -oE "[^/]+$" ) + elif type "wget" > /dev/null; then + TAG=$(wget $latest_release_url --server-response -O /dev/null 2>&1 | awk '/^ Location: /{DEST=$2} END{ print DEST}' | grep -oE "[^/]+$") + fi + else + TAG=$DESIRED_VERSION + fi +} + +# checkHelmInstalledVersion checks which version of helm is installed and +# if it needs to be changed. +checkHelmInstalledVersion() { + if [[ -f "${HELM_INSTALL_DIR}/${PROJECT_NAME}" ]]; then + local version=$("${HELM_INSTALL_DIR}/${PROJECT_NAME}" version -c | grep '^Client' | cut -d'"' -f2) + if [[ "$version" == "$TAG" ]]; then + echo "Helm ${version} is already ${DESIRED_VERSION:-latest}" + return 0 + else + echo "Helm ${TAG} is available. Changing from version ${version}." + return 1 + fi + else + return 1 + fi +} + +# downloadFile downloads the latest binary package and also the checksum +# for that binary. +downloadFile() { + HELM_DIST="helm-$TAG-$OS-$ARCH.tar.gz" + DOWNLOAD_URL="https://get.helm.sh/$HELM_DIST" + CHECKSUM_URL="$DOWNLOAD_URL.sha256" + HELM_TMP_ROOT="$(mktemp -dt helm-installer-XXXXXX)" + HELM_TMP_FILE="$HELM_TMP_ROOT/$HELM_DIST" + HELM_SUM_FILE="$HELM_TMP_ROOT/$HELM_DIST.sha256" + echo "Downloading $DOWNLOAD_URL" + if type "curl" > /dev/null; then + curl -SsL "$CHECKSUM_URL" -o "$HELM_SUM_FILE" + elif type "wget" > /dev/null; then + wget -q -O "$HELM_SUM_FILE" "$CHECKSUM_URL" + fi + if type "curl" > /dev/null; then + curl -SsL "$DOWNLOAD_URL" -o "$HELM_TMP_FILE" + elif type "wget" > /dev/null; then + wget -q -O "$HELM_TMP_FILE" "$DOWNLOAD_URL" + fi +} + +# installFile verifies the SHA256 for the file, then unpacks and +# installs it. +installFile() { + HELM_TMP="$HELM_TMP_ROOT/$PROJECT_NAME" + local sum=$(openssl sha1 -sha256 ${HELM_TMP_FILE} | awk '{print $2}') + local expected_sum=$(cat ${HELM_SUM_FILE}) + if [ "$sum" != "$expected_sum" ]; then + echo "SHA sum of ${HELM_TMP_FILE} does not match. Aborting." + exit 1 + fi + + mkdir -p "$HELM_TMP" + tar xf "$HELM_TMP_FILE" -C "$HELM_TMP" + HELM_TMP_BIN="$HELM_TMP/$OS-$ARCH/$PROJECT_NAME" + TILLER_TMP_BIN="$HELM_TMP/$OS-$ARCH/$TILLER_NAME" + echo "Preparing to install $PROJECT_NAME and $TILLER_NAME into ${HELM_INSTALL_DIR}" + runAsRoot cp "$HELM_TMP_BIN" "$HELM_INSTALL_DIR" + echo "$PROJECT_NAME installed into $HELM_INSTALL_DIR/$PROJECT_NAME" + if [ -x "$TILLER_TMP_BIN" ]; then + runAsRoot cp "$TILLER_TMP_BIN" "$HELM_INSTALL_DIR" + echo "$TILLER_NAME installed into $HELM_INSTALL_DIR/$TILLER_NAME" + else + echo "info: $TILLER_NAME binary was not found in this release; skipping $TILLER_NAME installation" + fi +} + +# fail_trap is executed if an error occurs. +fail_trap() { + result=$? + if [ "$result" != "0" ]; then + if [[ -n "$INPUT_ARGUMENTS" ]]; then + echo "Failed to install $PROJECT_NAME with the arguments provided: $INPUT_ARGUMENTS" + help + else + echo "Failed to install $PROJECT_NAME" + fi + echo -e "\tFor support, go to https://github.com/helm/helm." + fi + cleanup + exit $result +} + +# testVersion tests the installed client to make sure it is working. +testVersion() { + set +e + HELM="$(which $PROJECT_NAME)" + if [ "$?" = "1" ]; then + echo "$PROJECT_NAME not found. Is $HELM_INSTALL_DIR on your "'$PATH?' + exit 1 + fi + set -e + echo "Run '$PROJECT_NAME init' to configure $PROJECT_NAME." +} + +# help provides possible cli installation arguments +help () { + echo "Accepted cli arguments are:" + echo -e "\t[--help|-h ] ->> prints this help" + echo -e "\t[--version|-v ] . When not defined it defaults to latest" + echo -e "\te.g. --version v2.4.0 or -v latest" + echo -e "\t[--no-sudo] ->> install without sudo" +} + +# cleanup temporary files to avoid https://github.com/helm/helm/issues/2977 +cleanup() { + if [[ -d "${HELM_TMP_ROOT:-}" ]]; then + rm -rf "$HELM_TMP_ROOT" + fi +} + +# Execution + +#Stop execution on any error +trap "fail_trap" EXIT +set -e + +# Parsing input arguments (if any) +export INPUT_ARGUMENTS="${@}" +set -u +while [[ $# -gt 0 ]]; do + case $1 in + '--version'|-v) + shift + if [[ $# -ne 0 ]]; then + export DESIRED_VERSION="${1}" + else + echo -e "Please provide the desired version. e.g. --version v2.4.0 or -v latest" + exit 0 + fi + ;; + '--no-sudo') + USE_SUDO="false" + ;; + '--help'|-h) + help + exit 0 + ;; + *) exit 1 + ;; + esac + shift +done +set +u + +initArch +initOS +verifySupported +checkDesiredVersion +if ! checkHelmInstalledVersion; then + downloadFile + installFile +fi +testVersion +cleanup