diff --git a/README.md b/README.md index 0ab858ee..20c80e1d 100644 --- a/README.md +++ b/README.md @@ -47,5 +47,5 @@ Example Workflow: Create a new cluster and use it with `kubectl` - [ ] Use the docker client library instead of commands - [ ] Test the docker version - [ ] Improve cluster state management -- [ ] Use [hsirupsen/logrus](https://github.com/sirupsen/logrus) for prettier logs +- [ ] Use [sirupsen/logrus](https://github.com/sirupsen/logrus) for prettier logs - [ ] Add install script \ No newline at end of file diff --git a/install.sh b/install.sh new file mode 100755 index 00000000..7cd0cc9c --- /dev/null +++ b/install.sh @@ -0,0 +1,187 @@ +#!/usr/bin/env bash + +APP_NAME="k3d" +REPO_URL="https://github.com/iwilltry42/k3d-go" + +: ${USE_SUDO:="true"} +: ${K3D_INSTALL_DIR:="/usr/local/bin"} + +# initArch discovers the architecture for this system. +initArch() { + ARCH=$(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 + + $CMD +} + +# verifySupported checks that the os/arch combination is supported for +# binary builds. +verifySupported() { + local supported="darwin-386\ndarwin-amd64\nlinux-386\nlinux-amd64\nlinux-arm\nlinux-arm64\nwindows-386\nwindows-amd64" + if ! echo "${supported}" | grep -q "${OS}-${ARCH}"; then + echo "No prebuilt binary for ${OS}-${ARCH}." + echo "To build from source, go to $REPO_URL" + exit 1 + fi + + if ! type "curl" > /dev/null && ! type "wget" > /dev/null; then + echo "Either curl or wget is required" + exit 1 + fi +} + +# checkK3dInstalledVersion checks which version of k3d is installed and +# if it needs to be changed. +checkK3dInstalledVersion() { + if [[ -f "${K3D_INSTALL_DIR}/${APP_NAME}" ]]; then + local version=$(k3d --version | cut -d " " -f3) + if [[ "$version" == "$TAG" ]]; then + echo "k3d ${version} is already ${DESIRED_VERSION:-latest}" + return 0 + else + echo "k3d ${TAG} is available. Changing from version ${version}." + return 1 + fi + else + return 1 + fi +} + +# checkLatestVersion grabs the latest version string from the releases +checkLatestVersion() { + local latest_release_url="$REPO_URL/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 +} + +# downloadFile downloads the latest binary package and also the checksum +# for that binary. +downloadFile() { + K3D_DIST="k3d-$OS-$ARCH" + DOWNLOAD_URL="$REPO_URL/releases/download/$TAG/$K3D_DIST" + K3D_TMP_ROOT="$(mktemp -dt k3d-binary-XXXXXX)" + K3D_TMP_FILE="$K3D_TMP_ROOT/$K3D_DIST" + if type "curl" > /dev/null; then + curl -SsL "$DOWNLOAD_URL" -o "$K3D_TMP_FILE" + elif type "wget" > /dev/null; then + wget -q -O "$K3D_TMP_FILE" "$DOWNLOAD_URL" + fi +} + +# installFile verifies the SHA256 for the file, then unpacks and +# installs it. +installFile() { + echo "Preparing to install $APP_NAME into ${K3D_INSTALL_DIR}" + runAsRoot chmod +x "$K3D_TMP_FILE" + runAsRoot cp "$K3D_TMP_FILE" "$K3D_INSTALL_DIR/$APP_NAME" + echo "$APP_NAME installed into $K3D_INSTALL_DIR/$APP_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 $APP_NAME with the arguments provided: $INPUT_ARGUMENTS" + help + else + echo "Failed to install $APP_NAME" + fi + echo -e "\tFor support, go to $REPO_URL." + fi + cleanup + exit $result +} + +# testVersion tests the installed client to make sure it is working. +testVersion() { + set +e + K3D="$(which $APP_NAME)" + if [ "$?" = "1" ]; then + echo "$APP_NAME not found. Is $K3D_INSTALL_DIR on your "'$PATH?' + exit 1 + fi + set -e + echo "Run '$APP_NAME --help' to see what you can do with it." +} + +# help provides possible cli installation arguments +help () { + echo "Accepted cli arguments are:" + echo -e "\t[--help|-h ] ->> prints this help" + echo -e "\t[--no-sudo] ->> install without sudo" +} + +# cleanup temporary files +cleanup() { + if [[ -d "${K3D_TMP_ROOT:-}" ]]; then + rm -rf "$K3D_TMP_ROOT" + fi +} + +# Execution + +#Stop execution on any error +trap "fail_trap" EXIT +set -e + +# Parsing input arguments (if any) +export INPUT_ARGUMENTS="${@}" +set -u +while [[ $# -gt 0 ]]; do + case $1 in + '--no-sudo') + USE_SUDO="false" + ;; + '--help'|-h) + help + exit 0 + ;; + *) exit 1 + ;; + esac + shift +done +set +u + +initArch +initOS +verifySupported +checkLatestVersion +if ! checkK3dInstalledVersion; then + downloadFile + installFile +fi +testVersion +cleanup diff --git a/main.go b/main.go index 13ea178d..ce91b814 100644 --- a/main.go +++ b/main.go @@ -120,7 +120,7 @@ func main() { app := cli.NewApp() app.Name = "k3d" app.Usage = "Run k3s in Docker!" - app.Version = "0.1.0" + app.Version = "v0.1.1" app.Authors = []cli.Author{ cli.Author{ Name: "iwilltry42",