feat: Support for k9s

closes #96

assets/feature-installer-utils.sh

@@ -60,3 +60,21 @@ function checkAndCleanVersion {
     echo "${VERSION}"
   fi
 }
+
+# Usage: downloadFromGithub USER REPO VERSION PACKAGE_PREFIX PACKAGE_SUFFIX TARGET
+# Downloads a release package from github using the common architecture names
+# The package will be downloaded from github.com/USER/REPO/releases/VERSION/download/PACKAGE to the given TARGET file
+# where PACKAGE consists of PACKAGE_PREFIXARCHITECTURE.PACKAGE_SUFFIX.
+# Example: PACKAGE_PREFIX=krew_linux_, PACKAGE_SUFFIX=tar.gz on an arm architecture will download krew_linux_arm64.tar.gz
+function downloadFromGithub {
+  USER=$1
+  REPO=$2
+  VERSION=$3
+  PACKAGE_PREFIX=$4
+  PACKAGE_SUFFIX=$5
+  TARGET=$6
+
+  ARCH="$(uname -m | sed -e 's/x86_64/amd64/' -e 's/\(arm\)\(64\)\?.*/\1\2/' -e 's/aarch64$/arm64/')"
+  PACKAGE="${PACKAGE_PREFIX}${ARCH}.${PACKAGE_SUFFIX}"
+  execHandle "Downloading ${USER}/${REPO}@${VERSION}" curl -f -s -L "https://github.com/${USER}/${REPO}/releases/${VERSION}/download/${PACKAGE}" --output "${TARGET}"
+}

feature/k9s/feature.yaml

@@ -0,0 +1,5 @@
+icon: "🐾"
+title: "k9s"
+description: "Installs [k9s](https://k9scli.io/)"
+configuration:
+    - "Environment K9S_VERSION (optional): Valid k9s version to install (defaults to latest)"

feature/k9s/goss/.env

@@ -0,0 +1 @@
+DEBUG_k9s=yes

feature/k9s/goss/goss.yaml

@@ -0,0 +1,6 @@
+command:
+    k9s:
+        exec: "/home/cloudcontrol/bin/k9s version"
+        exit-status: 0
+        stdout:
+            - "Version:"

feature/k9s/install.sh

@@ -0,0 +1,20 @@
+. /feature-installer-utils.sh
+
+if [ -n "${K9S_VERSION}" ]
+then
+  K9S_VERSION=$(checkAndCleanVersion "${K9S_VERSION}")
+else
+  K9S_VERSION="latest"
+fi
+
+TEMPDIR=$(mktemp -d)
+cd "${TEMPDIR}" || exit
+
+downloadFromGithub derailed k9s "${K9S_VERSION}" k9s_Linux_ tar.gz k9s.tar.gz
+
+execHandle "Unpacking k9s" tar xzf k9s.tar.gz
+execHandle "Installing k9s" mv k9s /home/cloudcontrol/bin
+execHandle "Making k9s executable" chmod +x /home/cloudcontrol/bin/k9s
+
+cd - &>/dev/null || exit
+rm -rf "${TEMPDIR}"