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* Update kubectx-kubens to install Go versions (fixes #459) * Fix typo
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,72 +1,33 @@ | ||
| #!/usr/bin/env bash | ||
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| KUBCTX_KUBENS_VERSION="${VERSION:-"latest"}" | ||
| KUBECTX_KUBENS_VERSION="${VERSION:-"latest"}" | ||
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| set -e | ||
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| # Clean up | ||
| rm -rf /var/lib/apt/lists/* | ||
| source ./library_scripts.sh | ||
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| # nanolayer is a cli utility which keeps container layers as small as possible | ||
| # source code: https://github.com/devcontainers-contrib/nanolayer | ||
| # `ensure_nanolayer` is a bash function that will find any existing nanolayer installations, | ||
| # and if missing - will download a temporary copy that automatically get deleted at the end | ||
| # of the script | ||
| ensure_nanolayer nanolayer_location "v0.4.45" | ||
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| if [ "$(id -u)" -ne 0 ]; then | ||
| echo -e 'Script must be run as root. Use sudo, su, or add "USER root" to your Dockerfile before running this script.' | ||
| exit 1 | ||
| fi | ||
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| # Checks if packages are installed and installs them if not | ||
| check_packages() { | ||
| if ! dpkg -s "$@" >/dev/null 2>&1; then | ||
| if [ "$(find /var/lib/apt/lists/* | wc -l)" = "0" ]; then | ||
| echo "Running apt-get update..." | ||
| apt-get update -y | ||
| fi | ||
| apt-get -y install --no-install-recommends "$@" | ||
| fi | ||
| } | ||
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| # Figure out correct version of a three part version number is not passed | ||
| find_version_from_git_tags() { | ||
| local variable_name=$1 | ||
| local requested_version=${!variable_name} | ||
| if [ "${requested_version}" = "none" ]; then return; fi | ||
| local repository=$2 | ||
| local prefix=${3:-"tags/v"} | ||
| local separator=${4:-"."} | ||
| local last_part_optional=${5:-"false"} | ||
| if [ "$(echo "${requested_version}" | grep -o "." | wc -l)" != "2" ]; then | ||
| local escaped_separator=${separator//./\\.} | ||
| local last_part | ||
| if [ "${last_part_optional}" = "true" ]; then | ||
| last_part="(${escaped_separator}[0-9]+)?" | ||
| else | ||
| last_part="${escaped_separator}[0-9]+" | ||
| fi | ||
| local regex="${prefix}\\K[0-9]+${escaped_separator}[0-9]+${last_part}$" | ||
| local version_list="$(git ls-remote --tags ${repository} | grep -oP "${regex}" | tr -d ' ' | tr "${separator}" "." | sort -rV)" | ||
| if [ "${requested_version}" = "latest" ] || [ "${requested_version}" = "current" ] || [ "${requested_version}" = "lts" ]; then | ||
| declare -g ${variable_name}="$(echo "${version_list}" | head -n 1)" | ||
| else | ||
| set +e | ||
| declare -g ${variable_name}="$(echo "${version_list}" | grep -E -m 1 "^${requested_version//./\\.}([\\.\\s]|$)")" | ||
| set -e | ||
| fi | ||
| fi | ||
| if [ -z "${!variable_name}" ] || ! echo "${version_list}" | grep "^${!variable_name//./\\.}$" >/dev/null 2>&1; then | ||
| echo -e "Invalid ${variable_name} value: ${requested_version}\nValid values:\n${version_list}" >&2 | ||
| exit 1 | ||
| fi | ||
| echo "${variable_name}=${!variable_name}" | ||
| } | ||
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| find_version_from_git_tags KUBCTX_KUBENS_VERSION 'https://github.com/ahmetb/kubectx' | ||
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| check_packages ca-certificates curl | ||
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| curl -L -o /usr/local/bin/kubectx https://raw.githubusercontent.com/ahmetb/kubectx/v${KUBCTX_KUBENS_VERSION}/kubectx && | ||
| curl -L -o /usr/local/bin/kubens https://raw.githubusercontent.com/ahmetb/kubectx/v${KUBCTX_KUBENS_VERSION}/kubens && | ||
| chmod +x /usr/local/bin/kubectx && | ||
| chmod +x /usr/local/bin/kubens | ||
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| # Clean up | ||
| rm -rf /var/lib/apt/lists/* | ||
| $nanolayer_location \ | ||
| install \ | ||
| devcontainer-feature \ | ||
| "ghcr.io/devcontainers-contrib/features/gh-release:1" \ | ||
| --option repo='ahmetb/kubectx' --option binaryNames='kubectx' --option version="$KUBECTX_KUBENS_VERSION" --option assetRegex="kubectx.*" | ||
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| $nanolayer_location \ | ||
| install \ | ||
| devcontainer-feature \ | ||
| "ghcr.io/devcontainers-contrib/features/gh-release:1" \ | ||
| --option repo='ahmetb/kubectx' --option binaryNames='kubens' --option version="$KUBECTX_KUBENS_VERSION" --option assetRegex="kubens.*" | ||
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| echo "Done!" |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,179 @@ | ||
| #!/bin/bash -i | ||
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| clean_download() { | ||
| # The purpose of this function is to download a file with minimal impact on contaier layer size | ||
| # this means if no valid downloader is found (curl or wget) then we install a downloader (currently wget) in a | ||
| # temporary manner, and making sure to | ||
| # 1. uninstall the downloader at the return of the function | ||
| # 2. revert back any changes to the package installer database/cache (for example apt-get lists) | ||
| # The above steps will minimize the leftovers being created while installing the downloader | ||
| # Supported distros: | ||
| # debian/ubuntu/alpine | ||
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| url=$1 | ||
| output_location=$2 | ||
| tempdir=$(mktemp -d) | ||
| downloader_installed="" | ||
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| function _apt_get_install() { | ||
| tempdir=$1 | ||
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| # copy current state of apt list - in order to revert back later (minimize contianer layer size) | ||
| cp -p -R /var/lib/apt/lists $tempdir | ||
| apt-get update -y | ||
| apt-get -y install --no-install-recommends wget ca-certificates | ||
| } | ||
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| function _apt_get_cleanup() { | ||
| tempdir=$1 | ||
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| echo "removing wget" | ||
| apt-get -y purge wget --auto-remove | ||
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| echo "revert back apt lists" | ||
| rm -rf /var/lib/apt/lists/* | ||
| rm -r /var/lib/apt/lists && mv $tempdir/lists /var/lib/apt/lists | ||
| } | ||
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| function _apk_install() { | ||
| tempdir=$1 | ||
| # copy current state of apk cache - in order to revert back later (minimize contianer layer size) | ||
| cp -p -R /var/cache/apk $tempdir | ||
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| apk add --no-cache wget | ||
| } | ||
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| function _apk_cleanup() { | ||
| tempdir=$1 | ||
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| echo "removing wget" | ||
| apk del wget | ||
| } | ||
| # try to use either wget or curl if one of them already installer | ||
| if type curl >/dev/null 2>&1; then | ||
| downloader=curl | ||
| elif type wget >/dev/null 2>&1; then | ||
| downloader=wget | ||
| else | ||
| downloader="" | ||
| fi | ||
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| # in case none of them is installed, install wget temporarly | ||
| if [ -z $downloader ] ; then | ||
| if [ -x "/usr/bin/apt-get" ] ; then | ||
| _apt_get_install $tempdir | ||
| elif [ -x "/sbin/apk" ] ; then | ||
| _apk_install $tempdir | ||
| else | ||
| echo "distro not supported" | ||
| exit 1 | ||
| fi | ||
| downloader="wget" | ||
| downloader_installed="true" | ||
| fi | ||
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| if [ $downloader = "wget" ] ; then | ||
| wget -q $url -O $output_location | ||
| else | ||
| curl -sfL $url -o $output_location | ||
| fi | ||
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| # NOTE: the cleanup procedure was not implemented using `trap X RETURN` only because | ||
| # alpine lack bash, and RETURN is not a valid signal under sh shell | ||
| if ! [ -z $downloader_installed ] ; then | ||
| if [ -x "/usr/bin/apt-get" ] ; then | ||
| _apt_get_cleanup $tempdir | ||
| elif [ -x "/sbin/apk" ] ; then | ||
| _apk_cleanup $tempdir | ||
| else | ||
| echo "distro not supported" | ||
| exit 1 | ||
| fi | ||
| fi | ||
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| } | ||
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| ensure_nanolayer() { | ||
| # Ensure existance of the nanolayer cli program | ||
| local variable_name=$1 | ||
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| local required_version=$2 | ||
| # normalize version | ||
| if ! [[ $required_version == v* ]]; then | ||
| required_version=v$required_version | ||
| fi | ||
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| local nanolayer_location="" | ||
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| # If possible - try to use an already installed nanolayer | ||
| if [[ -z "${NANOLAYER_FORCE_CLI_INSTALLATION}" ]]; then | ||
| if [[ -z "${NANOLAYER_CLI_LOCATION}" ]]; then | ||
| if type nanolayer >/dev/null 2>&1; then | ||
| echo "Found a pre-existing nanolayer in PATH" | ||
| nanolayer_location=nanolayer | ||
| fi | ||
| elif [ -f "${NANOLAYER_CLI_LOCATION}" ] && [ -x "${NANOLAYER_CLI_LOCATION}" ] ; then | ||
| nanolayer_location=${NANOLAYER_CLI_LOCATION} | ||
| echo "Found a pre-existing nanolayer which were given in env variable: $nanolayer_location" | ||
| fi | ||
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| # make sure its of the required version | ||
| if ! [[ -z "${nanolayer_location}" ]]; then | ||
| local current_version | ||
| current_version=$($nanolayer_location --version) | ||
| if ! [[ $current_version == v* ]]; then | ||
| current_version=v$current_version | ||
| fi | ||
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| if ! [ $current_version == $required_version ]; then | ||
| echo "skipping usage of pre-existing nanolayer. (required version $required_version does not match existing version $current_version)" | ||
| nanolayer_location="" | ||
| fi | ||
| fi | ||
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| fi | ||
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| # If not previuse installation found, download it temporarly and delete at the end of the script | ||
| if [[ -z "${nanolayer_location}" ]]; then | ||
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| if [ "$(uname -sm)" == "Linux x86_64" ] || [ "$(uname -sm)" == "Linux aarch64" ]; then | ||
| tmp_dir=$(mktemp -d -t nanolayer-XXXXXXXXXX) | ||
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| clean_up () { | ||
| ARG=$? | ||
| rm -rf $tmp_dir | ||
| exit $ARG | ||
| } | ||
| trap clean_up EXIT | ||
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| if [ -x "/sbin/apk" ] ; then | ||
| clib_type=musl | ||
| else | ||
| clib_type=gnu | ||
| fi | ||
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| tar_filename=nanolayer-"$(uname -m)"-unknown-linux-$clib_type.tgz | ||
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| # clean download will minimize leftover in case a downloaderlike wget or curl need to be installed | ||
| clean_download https://github.com/devcontainers-contrib/cli/releases/download/$required_version/$tar_filename $tmp_dir/$tar_filename | ||
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| tar xfzv $tmp_dir/$tar_filename -C "$tmp_dir" | ||
| chmod a+x $tmp_dir/nanolayer | ||
| nanolayer_location=$tmp_dir/nanolayer | ||
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| else | ||
| echo "No binaries compiled for non-x86-linux architectures yet: $(uname -m)" | ||
| exit 1 | ||
| fi | ||
| fi | ||
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| # Expose outside the resolved location | ||
| declare -g ${variable_name}=$nanolayer_location | ||
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| } | ||
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