Initial chart example

Signed-off-by: Alex Ellis (OpenFaaS Ltd) <alexellis2@gmail.com>

Author: alexellis

render-chart.sh

@@ -0,0 +1,32 @@
+#!/bin/bash
+
+## Example for rendering Helm chart for openfaas to a static
+## set of objects with predictable/stable names for easier
+## diffs and maintenance for teams who need to go through a manual
+## YAML approval for each change/object vs reviewing the chart directly
+
+OUTPUT="yaml/openfaas/"
+rm -rf "$OUTPUT"
+
+helm template chart/openfaas/ -f ./chart/openfaas/values-pro.yaml | \
+  yq -N -s '"__split__" + $index' - && \
+for f in __split__*.yml; do
+  kind=$(yq '.kind' "$f")
+  name=$(yq '.metadata.name' "$f")
+
+  if [ "$kind" = "null" ] || [ -z "$kind" ]; then
+    rm -f "$f"
+    continue
+  fi
+
+  lower_kind=$(echo "$kind" | tr '[:upper:]' '[:lower:]')
+
+  prefix=""
+  if [ "$kind" = "CustomResourceDefinition" ]; then
+    prefix="00_"
+  fi
+
+  dir="${OUTPUT}/${prefix}${lower_kind}"
+  mkdir -p "$dir"
+  mv "$f" "${dir}/${name}.yaml"
+done