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Move that to scripts
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+169
scripts/get-egctl.sh
+169
scripts/get-egctl.sh
···
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#!/usr/bin/env bash
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: "${BINARY_NAME:="egctl"}"
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: "${EGCTL_INSTALL_DIR:="/usr/local/bin"}"
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export VERSION
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HAS_CURL="$(type "curl" &> /dev/null && echo true || echo false)"
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HAS_WGET="$(type "wget" &> /dev/null && echo true || echo false)"
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HAS_GIT="$(type "git" &> /dev/null && echo true || echo false)"
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# initArch discovers the architecture for this system.
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initArch() {
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ARCH=$(uname -m)
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case $ARCH in
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armv5*) ARCH="armv5";;
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armv6*) ARCH="armv6";;
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armv7*) ARCH="arm";;
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aarch64) ARCH="arm64";;
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x86) ARCH="386";;
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x86_64) ARCH="amd64";;
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i686) ARCH="386";;
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i386) ARCH="386";;
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esac
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}
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# initOS discovers the operating system for this system.
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initOS() {
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OS="$(uname|tr '[:upper:]' '[:lower:]')"
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case "$OS" in
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# Minimalist GNU for Windows
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mingw*|cygwin*) OS='windows';;
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esac
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}
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# runs the given command as root (detects if we are root already)
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runAsRoot() {
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if [ $EUID -ne 0 ]; then
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sudo "${@}"
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else
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"${@}"
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fi
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}
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# verifySupported checks that the os/arch combination is supported for
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# binary builds, as well whether or not necessary tools are present.
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verifySupported() {
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local supported="darwin-amd64\ndarwin-arm64\nlinux-amd64\nlinux-arm64\n"
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if ! echo "${supported}" | grep -q "${OS}-${ARCH}"; then
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echo "No prebuilt binary for ${OS}-${ARCH}."
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echo "To build from source, go to https://github.com/envoyproxy/gateway"
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exit 1
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fi
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if [ "${HAS_CURL}" != "true" ] && [ "${HAS_WGET}" != "true" ]; 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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if [ "${HAS_GIT}" != "true" ]; then
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echo "[WARNING] Could not find git. It is required for plugin installation."
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fi
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}
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# checkDesiredVersion checks if the desired version is available.
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checkDesiredVersion() {
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if [ "$VERSION" == "" ]; then
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# Get tag from release URL
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local latest_release_url="https://github.com/envoyproxy/gateway/releases"
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if [ "${HAS_CURL}" == "true" ]; then
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VERSION=$(curl -Ls $latest_release_url | grep 'href="/envoyproxy/gateway/releases/tag/v[0-9]*.[0-9]*.[0-9]*\"' | sed -E 's/.*\/envoyproxy\/gateway\/releases\/tag\/(v[0-9\.]+)".*/\1/g' | head -1)
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elif [ "${HAS_WGET}" == "true" ]; then
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VERSION=$(wget $latest_release_url -O - 2>&1 | grep 'href="/envoyproxy/gateway/releases/tag/v[0-9]*.[0-9]*.[0-9]*\"' | sed -E 's/.*\/envoyproxy\/gateway\/releases\/tag\/(v[0-9\.]+)".*/\1/g' | head -1)
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fi
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fi
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}
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# checkEGCTLInstalledVersion checks which version of egctl is installed and
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# if it needs to be changed.
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checkEGCTLInstalledVersion() {
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if [[ -f "${EGCTL_INSTALL_DIR}/${BINARY_NAME}" ]]; then
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version=$("${EGCTL_INSTALL_DIR}/${BINARY_NAME}" version --remote=false | grep -Eo "v[0-9]+\.[0-9]+.*" )
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if [[ "$version" == "$VERSION" ]]; then
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echo "egctl ${version} is already ${VERSION:-latest}"
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return 0
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else
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echo "egctl ${VERSION} is available. Changing from version ${version}."
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return 1
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fi
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else
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return 1
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fi
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}
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# downloadFile downloads the latest binary package
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# for that binary.
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downloadFile() {
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EGCTL_DIST="egctl_${VERSION}_${OS}_${ARCH}.tar.gz"
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DOWNLOAD_URL="https://github.com/envoyproxy/gateway/releases/download/$VERSION/$EGCTL_DIST"
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EGCTL_TMP_ROOT="$(mktemp -dt egctl-installer-XXXXXX)"
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EGCTL_TMP_FILE="$EGCTL_TMP_ROOT/$EGCTL_DIST"
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echo "Downloading $DOWNLOAD_URL"
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if [ "${HAS_CURL}" == "true" ]; then
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curl -SsL "$DOWNLOAD_URL" -o "$EGCTL_TMP_FILE"
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elif [ "${HAS_WGET}" == "true" ]; then
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wget -q -O "$EGCTL_TMP_FILE" "$DOWNLOAD_URL"
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fi
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}
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# installFile installs the egctl binary.
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installFile() {
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EGCTL_TMP="$EGCTL_TMP_ROOT/$BINARY_NAME"
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mkdir -p "$EGCTL_TMP"
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tar xf "$EGCTL_TMP_FILE" -C "$EGCTL_TMP"
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EGCTL_TMP_BIN="$EGCTL_TMP/bin/$OS/$ARCH/egctl"
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echo "Preparing to install $BINARY_NAME into ${EGCTL_INSTALL_DIR}"
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runAsRoot cp "$EGCTL_TMP_BIN" "$EGCTL_INSTALL_DIR/$BINARY_NAME"
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echo "$BINARY_NAME installed into $EGCTL_INSTALL_DIR/$BINARY_NAME"
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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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if [[ -n "$INPUT_ARGUMENTS" ]]; then
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echo "Failed to install $BINARY_NAME with the arguments provided: $INPUT_ARGUMENTS"
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else
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echo "Failed to install $BINARY_NAME"
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fi
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echo -e "\tFor support, go to https://github.com/envoyproxy/gateway."
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fi
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cleanup
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exit $result
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}
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# testVersion tests the installed client to make sure it is working.
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testVersion() {
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set +e
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if ! [ "$(command -v $BINARY_NAME)" ]; then
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echo "$BINARY_NAME not found. Is $EGCTL_INSTALL_DIR on your PATH?"
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exit 1
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fi
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set -e
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}
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# cleanup temporary files.
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cleanup() {
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if [[ -d "${EGCTL_TMP_ROOT:-}" ]]; then
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rm -rf "$EGCTL_TMP_ROOT"
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fi
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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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checkDesiredVersion
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if ! checkEGCTLInstalledVersion; then
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downloadFile
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installFile
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fi
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testVersion
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cleanup