Update script to fetch Alloy mixin dashboards

.gitignore

@@ -1 +1,4 @@
 output/
+scripts/grr*
+scripts/jb*
+scripts/yq*

scripts/update-monitoring-mixin-dashboards.sh

@@ -11,33 +11,95 @@
 
 set -e
 
-TMPDIR="$(mktemp -d)"
-trap "rm -rf $TMPDIR" EXIT
+GRIZZLY_VERSION="0.4.3"
+GRIZZLY_BIN="grr"
 
+JB_VERSION="0.5.1"
+JB_BIN="jb"
 
-main() {
+YQ_VERSION="4.44.3"
+YQ_BIN="yq"
+
+SCRIPT_DIR=$(cd $(dirname "${BASH_SOURCE}") && pwd -P)
+OS=$(go env GOOS)
+ARCH=$(go env GOARCH)
+TMPDIR="$(mktemp -d -t giantswarm-dashboards-XXXXXX)"
+#trap "rm -rf $TMPDIR" EXIT
+echo $TMPDIR
+
+function install_tool() {
+    # Sometimes the archive might contain a folder tree. Use this as a path prefix relative to the root of the
+    # extraction folder to point to the actual binary or pass it as empty string if the binary is directly downloaded.
+    local binaryPath=$1 ; shift
+    local binary=$1 ; shift
+    local version=$1 ; shift
+    local url=$1 ; shift
+
+    local short_path="${SCRIPT_DIR}/${binary}"
+    local long_path="${short_path}-v${version}"
+
+    file=$(basename "${url}")
+
+    if [[ ! -f "${long_path}" ]]; then
+        echo "---> Installing ${binary} v${version}"
+        set -x
+        curl -fsL  -o "${TMPDIR}/${file}" "${url}"
+        { set +x; } 2>/dev/null
+        if [[ "${file}" == *.tar.gz ]]; then
+            set -x
+            tar xf "${TMPDIR}/${file}" -C "${TMPDIR}" --strip-components 1
+            { set +x; } 2>/dev/null
+        elif [[ "${file}" == *.zip ]]; then
+            set -x
+            unzip -qo "${TMPDIR}/${file}" -d "${TMPDIR}"
+            { set +x; } 2>/dev/null
+        else
+            set -x
+            mv "${TMPDIR}/${file}" "${TMPDIR}/${binary}"
+            { set +x; } 2>/dev/null
+        fi
+        set -x
+        chmod +x "${TMPDIR}/${binaryPath}${binary}"
+        mv "${TMPDIR}/${binaryPath}${binary}" "${long_path}"
+        { set +x; } 2>/dev/null
+        base_long="$(basename "${long_path}")"
+        set -x
+        ln -fs "${base_long}" "${short_path}"
+        { set +x; } 2>/dev/null
+    fi
+}
+
+update_monitoring-mixins() {
 
   apps=("alertmanager")
 
   ## clone the repo
-  git clone https://github.com/monitoring-mixins/website.git --depth 1 "$TMPDIR"/monitoring-mixins
+  git clone https://github.com/monitoring-mixins/website.git --depth 1 "$TMPDIR/monitoring-mixins"
 
   ## Copy and overwrite
   for app in "${apps[@]}"; do
       echo "copying $app dashboard"
       cp "$TMPDIR"/monitoring-mixins/assets/"$app"/dashboards/* ./helm/dashboards/dashboards/shared/public/
   done
+}
 
-  echo "------- Update Changelog"
-  gst="$(git status --short)"
-  if [[ "$gst" != "" ]]; then
-      echo "$gst"
-      echo_changes > "$TMPDIR"/tmp_changes
-      sed -i '/^## \[Unreleased\]/r '"$TMPDIR"'/tmp_changes' CHANGELOG.md
-  fi
+update_alloy-mixins() {
+  ## clone the repo
+  git clone https://github.com/grafana/alloy.git --depth 1 "$TMPDIR/alloy"
 
-}
+  alloy_mixin_dir="$TMPDIR/alloy/operations/alloy-mixin"
 
+  (
+    cd "$alloy_mixin_dir"
+    "$SCRIPT_DIR/$JB_BIN" install
+    "$SCRIPT_DIR/$GRIZZLY_BIN" export grizzly/dashboards.jsonnet ./destination
+  )
+
+  for file in $(ls -1 "$alloy_mixin_dir/destination/Dashboard/"*.yaml); do
+    filename="$(cat "$file" | "$SCRIPT_DIR/$YQ_BIN" .spec.title | tr -dc '[:alnum:] \n\r' | tr '[:upper:]' '[:lower:]' | tr '[:space:]' '_')"
+    cat "$file" | "$SCRIPT_DIR/$YQ_BIN" --output-format json .spec > "./helm/dashboards/dashboards/$filename.json"
+  done
+}
 
 echo_changes() {
   echo ""
@@ -49,5 +111,21 @@ echo_changes() {
   echo "\`\`\`"
 }
 
+main() {
+  install_tool "" "${GRIZZLY_BIN}" "${GRIZZLY_VERSION}" "https://github.com/grafana/grizzly/releases/download/v0.4.3/grr-${OS}-${ARCH}"
+  install_tool "" "${JB_BIN}" "${JB_VERSION}" "https://github.com/jsonnet-bundler/jsonnet-bundler/releases/download/v${JB_VERSION}/jb-${OS}-${ARCH}"
+  install_tool "" "${YQ_BIN}" "${YQ_VERSION}" "https://github.com/mikefarah/yq/releases/download/v${YQ_VERSION}/yq_${OS}_${ARCH}"
+
+  #update_monitoring-mixins
+  update_alloy-mixins
+
+  echo "------- Update Changelog"
+  gst="$(git status --short)"
+  if [[ "$gst" != "" ]]; then
+      echo "$gst"
+      echo_changes > "$TMPDIR"/tmp_changes
+      sed -i '/^## \[Unreleased\]/r '"$TMPDIR"'/tmp_changes' CHANGELOG.md
+  fi
+}
 
 main "$@"