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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,235 @@ | ||
| #!/usr/bin/env bash | ||
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| # 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 | ||
|
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| : ${BINARY_NAME:="helm"} | ||
| : ${USE_SUDO:="true"} | ||
| : ${HELM_INSTALL_DIR:="/usr/local/bin"} | ||
|
|
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| # initArch discovers the architecture for this system. | ||
| initArch() { | ||
| ARCH=$(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:]') | ||
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|
||
| case "$OS" in | ||
| # Minimalist GNU for Windows | ||
| mingw*) OS='windows';; | ||
| esac | ||
| } | ||
|
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| # runs the given command as root (detects if we are root already) | ||
| runAsRoot() { | ||
| local CMD="$*" | ||
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||
| if [ $EUID -ne 0 -a $USE_SUDO = "true" ]; then | ||
| CMD="sudo $CMD" | ||
| fi | ||
|
|
||
| $CMD | ||
| } | ||
|
|
||
| # verifySupported checks that the os/arch combination is supported for | ||
| # binary builds. | ||
| verifySupported() { | ||
| local supported="darwin-386\ndarwin-amd64\nlinux-386\nlinux-amd64\nlinux-arm\nlinux-arm64\nlinux-ppc64le\nlinux-s390x\nwindows-386\nwindows-amd64" | ||
| if ! echo "${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$DESIRED_VERSION" == "x" ]; then | ||
| # Get tag from release URL | ||
| local latest_release_url="https://github.com/helm/helm/releases" | ||
| if type "curl" > /dev/null; then | ||
| TAG=$(curl -Ls $latest_release_url | grep 'href="/helm/helm/releases/tag/v3.[0-9]*.[0-9]*\"' | grep -v no-underline | head -n 1 | cut -d '"' -f 2 | awk '{n=split($NF,a,"/");print a[n]}' | awk 'a !~ $0{print}; {a=$0}') | ||
| elif type "wget" > /dev/null; then | ||
| TAG=$(wget $latest_release_url -O - 2>&1 | grep 'href="/helm/helm/releases/tag/v3.[0-9]*.[0-9]*\"' | grep -v no-underline | head -n 1 | cut -d '"' -f 2 | awk '{n=split($NF,a,"/");print a[n]}' | awk 'a !~ $0{print}; {a=$0}') | ||
| fi | ||
| else | ||
| TAG=$DESIRED_VERSION | ||
| fi | ||
| } | ||
|
|
||
| # checkHelmInstalledVersion checks which version of helm is installed and | ||
| # if it needs to be changed. | ||
| checkHelmInstalledVersion() { | ||
| if [[ -f "${HELM_INSTALL_DIR}/${BINARY_NAME}" ]]; then | ||
| local version=$("${HELM_INSTALL_DIR}/${BINARY_NAME}" version --template="{{ .Version }}") | ||
| if [[ "$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/$BINARY_NAME" | ||
| local sum=$(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 ${HELM_TMP_FILE} does not match. Aborting." | ||
| exit 1 | ||
| fi | ||
|
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||
| mkdir -p "$HELM_TMP" | ||
| tar xf "$HELM_TMP_FILE" -C "$HELM_TMP" | ||
| HELM_TMP_BIN="$HELM_TMP/$OS-$ARCH/helm" | ||
| echo "Preparing to install $BINARY_NAME into ${HELM_INSTALL_DIR}" | ||
| runAsRoot cp "$HELM_TMP_BIN" "$HELM_INSTALL_DIR/$BINARY_NAME" | ||
| echo "$BINARY_NAME installed into $HELM_INSTALL_DIR/$BINARY_NAME" | ||
| } | ||
|
|
||
| # fail_trap is executed if an error occurs. | ||
| fail_trap() { | ||
| result=$? | ||
| if [ "$result" != "0" ]; then | ||
| if [[ -n "$INPUT_ARGUMENTS" ]]; then | ||
| echo "Failed to install $BINARY_NAME with the arguments provided: $INPUT_ARGUMENTS" | ||
| help | ||
| else | ||
| echo "Failed to install $BINARY_NAME" | ||
| fi | ||
| echo -e "\tFor support, go to https://github.com/helm/helm." | ||
| fi | ||
| cleanup | ||
| exit $result | ||
| } | ||
|
|
||
| # testVersion tests the installed client to make sure it is working. | ||
| testVersion() { | ||
| set +e | ||
| HELM="$(command -v $BINARY_NAME)" | ||
| if [ "$?" = "1" ]; then | ||
| echo "$BINARY_NAME not found. Is $HELM_INSTALL_DIR on your "'$PATH?' | ||
| exit 1 | ||
| fi | ||
| set -e | ||
| } | ||
|
|
||
| # 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 <desired_version>] . When not defined it fetches the latest release from GitHub" | ||
| echo -e "\te.g. --version v3.0.0 or -v canary" | ||
| 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 v3.0.0 or -v canary" | ||
| 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 |
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