feat(plugin): Provide a faster installation script

install_binary.sh

@@ -0,0 +1,184 @@
+#!/usr/bin/env sh
+
+# borrowed from https://github.com/technosophos/helm-template
+
+PROJECT_NAME="kaartcontrole"
+PROJECT_GH="tiulpin/$PROJECT_NAME"
+PROJECT_CHECKSUM_FILE="$PROJECT_NAME-checksum.txt"
+HELM_PLUGIN_PATH="$HELM_PLUGIN_DIR"
+
+if [ -z "$HELM_PLUGIN_DIR" ]; then
+   HELM_PLUGIN_PATH=$(helm env | grep HELM_PLUGINS | cut -d'=' -f2 | tr -d '"')
+fi
+
+# Convert the HELM_PLUGIN_PATH to unix if cygpath is
+# available. This is the case when using MSYS2 or Cygwin
+# on Windows where helm returns a Windows path but we
+# need a Unix path
+if type cygpath >/dev/null 2>&1; then
+  echo Use Sygpath
+  HELM_PLUGIN_PATH=$(cygpath -u "$HELM_PLUGIN_PATH")
+fi
+
+if [ "$SKIP_BIN_INSTALL" = "1" ]; then
+  echo "Skipping binary install"
+  exit
+fi
+
+if [ "$SKIP_BIN_DOWNLOAD" = "1" ]; then
+  echo "Preparing to install into ${HELM_PLUGIN_PATH}"
+  cp -f plugin.yaml $HELM_PLUGIN_PATH/plugin.yaml
+  cp -f untt $HELM_PLUGIN_PATH/untt
+  chmod +x $HELM_PLUGIN_PATH/untt
+  echo "$PROJECT_NAME installed into $HELM_PLUGIN_PATH"
+  exit
+fi
+
+# initArch discovers the architecture for this system.
+initArch() {
+  ARCH=$(uname -m)
+  case "$ARCH" in
+    armv5*) ARCH="armv5";;
+    armv6*) ARCH="armv6";;
+    armv7*) ARCH="armv7";;
+    aarch64) ARCH="arm64";;
+    x86) ARCH="386";;
+    x86_64) ARCH="x86_64";;
+    i686) ARCH="386";;
+    i386) ARCH="386";;
+  esac
+}
+
+# initOS discovers the operating system for this system.
+initOS() {
+  OS=$(uname)
+
+  case "$OS" in
+    # Msys support
+    msys*) OS='windows';;
+    # Minimalist GNU for Windows
+    mingw*) OS='windows';;
+  esac
+}
+
+# verifySupported checks that the os/arch combination is supported for
+# binary builds.
+verifySupported() {
+  local supported="Linux-x86_64\nLinux-arm64\nDarwin-x86_64\nDarwin-arm64"
+  if ! echo "$supported" | grep -q "$OS-$ARCH"; then
+    echo "No prebuild binary for $OS-$ARCH."
+    exit 1
+  fi
+
+  if ! type "curl" >/dev/null 2>&1 && ! type "wget" >/dev/null 2>&1; then
+    echo "Either curl or wget is required"
+    exit 1
+  fi
+  echo "Support $OS-$ARCH"
+}
+
+# getDownloadURL checks the latest available version.
+getDownloadURL() {
+  # Determine last tag based on VCS download
+  local version=$(git describe --tags --abbrev=0 >/dev/null 2>&1)
+  # If no version found (because of no git), try fetch from plugin
+  if [ -z "$version" ]; then
+    echo "No version found"
+    version=v$(sed -n -e 's/version:[ "]*\([^"]*\).*/\1/p' plugin.yaml)
+  fi
+
+  # Setup Download Url
+  DOWNLOAD_URL="https://github.com/$PROJECT_GH/releases/download/${version}/${PROJECT_NAME}_${OS}_$ARCH.tar.gz"
+  # Setup Checksum Url
+  # PROJECT_CHECKSUM="https://github.com/$PROJECT_GH/releases/download/${version}/$PROJECT_NAME_${version#v}_checksums.txt"
+}
+
+# downloadFile downloads the latest binary package and also the checksum
+# for that binary.
+downloadFile() {
+  PLUGIN_TMP_FOLDER="$HOME/.tmp/_dist/"
+  [ -d "$PLUGIN_TMP_FOLDER" ] && rm -r "$PLUGIN_TMP_FOLDER" >/dev/null
+  mkdir -p "$PLUGIN_TMP_FOLDER"
+  echo "Downloading "$DOWNLOAD_URL" to location $PLUGIN_TMP_FOLDER"
+  if type "curl" >/dev/null 2>&1; then
+      (cd "$PLUGIN_TMP_FOLDER" && curl -LO "$DOWNLOAD_URL")
+  elif type "wget" >/dev/null 2>&1; then
+      wget -P "$PLUGIN_TMP_FOLDER" "$DOWNLOAD_URL"
+  fi
+}
+
+# installFile verifies the SHA256 for the file, then unpacks and
+# installs it.
+installFile() {
+  mkdir -p $HOME/.tmp
+  cd $HOME/.tmp
+  DOWNLOAD_FILE=$(find ./_dist -name "*.tar.gz")
+  echo "found: $DOWNLOAD_FILE"
+  if [ -n "$PROJECT_CHECKSUM" ]; then
+    echo Validating Checksum.
+    if type "curl" >/dev/null 2>&1; then
+      if type "shasum" >/dev/null 2>&1; then
+        curl -s -L "$PROJECT_CHECKSUM" | grep "$DOWNLOAD_FILE" | shasum -a 256 -c -s
+      elif type "sha256sum" >/dev/null 2>&1; then
+        if grep -q "ID=alpine" /etc/os-release; then
+          curl -s -L "$PROJECT_CHECKSUM" | grep "$DOWNLOAD_FILE" | (sha256sum -c -s || sha256sum -c --status)
+        else
+          curl -s -L "$PROJECT_CHECKSUM" | grep "$DOWNLOAD_FILE" | sha256sum -c --status
+        fi
+      else
+        echo No Checksum as there is no shasum or sha256sum found.
+      fi
+    elif type "wget" >/dev/null 2>&1; then
+      if type "shasum" >/dev/null 2>&1; then
+        wget -q -O - "$PROJECT_CHECKSUM" | grep "$DOWNLOAD_FILE" | shasum -a 256 -c -s
+      elif type "sha256sum" >/dev/null 2>&1; then
+        if grep -q "ID=alpine" /etc/os-release; then
+          wget -q -O - "$PROJECT_CHECKSUM" | grep "$DOWNLOAD_FILE" | (sha256sum -c -s || sha256sum -c --status)
+        else
+          wget -q -O - "$PROJECT_CHECKSUM" | grep "$DOWNLOAD_FILE" | sha256sum -c --status
+        fi
+      else
+        echo No Checksum as there is no shasum or sha256sum found.
+      fi
+    fi
+  else
+    echo No Checksum validated.
+  fi
+  echo "Preparing to install into ${HELM_PLUGIN_PATH}"
+  tar -xzf "$DOWNLOAD_FILE" -C "$HELM_PLUGIN_PATH"
+  mkdir -p "$HELM_PLUGIN_PATH/bin"
+  mv "$HELM_PLUGIN_PATH/$PROJECT_NAME" "$HELM_PLUGIN_PATH/bin/kc"
+  rm -rf "$HOME/.tmp/_dist"
+  echo "$PROJECT_NAME installed into $HELM_PLUGIN_PATH"
+}
+
+# fail_trap is executed if an error occurs.
+fail_trap() {
+  result=$?
+  if [ "$result" != "0" ]; then
+    echo "Failed to install $PROJECT_NAME"
+    echo "For support, go to https://github.com/kubernetes/helm"
+  fi
+  exit $result
+}
+
+# testVersion tests the installed client to make sure it is working.
+testVersion() {
+  # To avoid to keep track of the Windows suffix,
+  # call the plugin assuming it is in the PATH
+  PATH=$PATH:$HELM_PLUGIN_PATH
+  helm kc -h
+}
+
+# Execution
+
+#Stop execution on any error
+trap "fail_trap" EXIT
+set -e
+initArch
+initOS
+verifySupported
+getDownloadURL
+downloadFile
+installFile
+testVersion

plugin.yaml

@@ -1,13 +1,13 @@
 name: "kc"
-version: "0.1.0"
+version: "0.2.0"
 usage: "KaartControle: validate Helm chart values against defaults"
 description: "A Helm plugin to detect redundant and mismatched values in your value files"
 command: "$HELM_PLUGIN_DIR/bin/kc"
 
 hooks:
   install: |
     cd $HELM_PLUGIN_DIR
-    make install
+    ./install_binary.sh
   update: |
     cd $HELM_PLUGIN_DIR
-    make install
+    ./install_binary.sh