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146 lines
4.2 KiB
146 lines
4.2 KiB
#!/bin/bash
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# Copyright 2016 The Kubernetes Authors All rights reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# The install script is based off of the MIT-licensed script from glide,
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# the package manager for Go: https://github.com/Masterminds/glide.sh/blob/master/get
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PROJECT_NAME="helm"
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: ${HELM_INSTALL_DIR:="/usr/local/bin"}
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# initArch discovers the architecture for this system.
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initArch() {
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ARCH=$(uname -m)
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case $ARCH in
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armv5*) ARCH="armv5";;
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armv6*) ARCH="armv6";;
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armv7*) ARCH="armv7";;
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aarch64) ARCH="arm64";;
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x86) ARCH="386";;
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x86_64) ARCH="amd64";;
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i686) ARCH="386";;
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i386) ARCH="386";;
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esac
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}
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# initOS discovers the operating system for this system.
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initOS() {
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OS=$(echo `uname`|tr '[:upper:]' '[:lower:]')
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case "$OS" in
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# Minimalist GNU for Windows
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mingw*) OS='windows';;
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esac
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}
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# verifySupported checks that the os/arch combination is supported for
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# binary builds.
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verifySupported() {
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local supported="linux-amd64\ndarwin-amd64\nlinux-386"
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if ! echo "${supported}" | grep -q "${OS}-${ARCH}"; then
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echo "No prebuild binary for ${OS}-${ARCH}."
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echo "To build from source, go to https://github.com/kubernetes/helm"
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exit 1
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fi
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if ! type "curl" > /dev/null && ! type "wget" > /dev/null; then
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echo "Either curl or wget is required"
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exit 1
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fi
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}
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# downloadFile downloads the latest binary package and also the checksum
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# for that binary.
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downloadFile() {
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# Use the GitHub API to find the latest version for this project.
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local latest_url="https://api.github.com/repos/kubernetes/helm/releases/latest"
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if type "curl" > /dev/null; then
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TAG=$(curl -s $latest_url | awk '/\"tag_name\":/{gsub( /[,\"]/,"", $2); print $2}')
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elif type "wget" > /dev/null; then
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TAG=$(wget -q -O - $latest_url | awk '/\"tag_name\":/{gsub( /[,\"]/,"", $2); print $2}')
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fi
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HELM_DIST="helm-$TAG-$OS-$ARCH.tar.gz"
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DOWNLOAD_URL="https://kubernetes-helm.storage.googleapis.com/$HELM_DIST"
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CHECKSUM_URL="$DOWNLOAD_URL.sha256"
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HELM_TMP_FILE="/tmp/$HELM_DIST"
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HELM_SUM_FILE="/tmp/$HELM_DIST.sha256"
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echo "Downloading $DOWNLOAD_URL"
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if type "curl" > /dev/null; then
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curl -Ls "$CHECKSUM_URL" -o "$HELM_SUM_FILE"
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elif type "wget" > /dev/null; then
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wget -q -O "$HELM_SUM_FILE" "$CHECKSUM_URL"
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fi
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if type "curl" > /dev/null; then
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curl -L "$DOWNLOAD_URL" -o "$HELM_TMP_FILE"
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elif type "wget" > /dev/null; then
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wget -q -O "$HELM_TMP_FILE" "$DOWNLOAD_URL"
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fi
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}
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# installFile verifies the SHA256 for the file, then unpacks and
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# installs it.
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installFile() {
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HELM_TMP="/tmp/$PROJECT_NAME"
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local sum=$(openssl sha -sha256 ${HELM_TMP_FILE} | awk '{print $2}')
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local expected_sum=$(cat ${HELM_SUM_FILE})
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if [ "$sum" != "$expected_sum" ]; then
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echo "SHA sum of $HELM_TMP does not match. Aborting."
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exit 1
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fi
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mkdir -p "$HELM_TMP"
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tar xf "$HELM_TMP_FILE" -C "$HELM_TMP"
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HELM_TMP_BIN="$HELM_TMP/$OS-$ARCH/$PROJECT_NAME"
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echo "Preparing to install into ${HELM_INSTALL_DIR} (sudo)"
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sudo cp "$HELM_TMP_BIN" "$HELM_INSTALL_DIR"
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}
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# fail_trap is executed if an error occurs.
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fail_trap() {
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result=$?
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if [ "$result" != "0" ]; then
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echo "Failed to install $PROJECT_NAME"
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echo "\tFor support, go to https://github.com/kubernetes/helm."
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fi
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exit $result
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}
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# testVersion tests the installed client to make sure it is working.
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testVersion() {
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set +e
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echo "$PROJECT_NAME installed into $HELM_INSTALL_DIR/$PROJECT_NAME"
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HELM="$(which $PROJECT_NAME)"
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if [ "$?" = "1" ]; then
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echo "$PROJECT_NAME not found. Is $HELM_INSTALL_DIR on your "'$PATH?'
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exit 1
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fi
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set -e
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echo "Run '$PROJECT_NAME init' to configure $PROJECT_NAME."
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}
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# Execution
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#Stop execution on any error
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trap "fail_trap" EXIT
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set -e
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initArch
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initOS
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verifySupported
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downloadFile
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installFile
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testVersion
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