Add process to create legacy Helm chart CRDs and autogenerate role.ya…

…ml, fixes k8ssandra#680

scripts/release-helm-chart.sh

@@ -6,55 +6,94 @@ if [[ ! $0 == scripts/* ]]; then
 fi
 
 # This script assumes k8ssandra is checked out at ../k8ssandra and is checked out at main
-if [ "$#" -ne 1 ]; then
-    echo "Usage: scripts/release-helm-chart.sh version"
+if [ "$#" -le 1 ]; then
+    echo "Usage: scripts/release-helm-chart.sh version legacy"
     echo "Script assumes you are in the correct branch / tag and that k8ssandra repository"
-    echo "has been checked out to ../k8ssandra/"
+    echo "has been checked out to ../k8ssandra/. If legacy is set, the script will generate"
+    echo "CRDs to the chart/crds directory"
     exit
 fi
 
 # Includes here to get all the updates even if we swap to an older branch
 . scripts/lib.sh
 
+LEGACY=false
+if [[ $2 == "legacy" ]]; then
+    LEGACY=true
+fi
+
 # This should work with BSD/MacOS mktemp and GNU one
 CRD_TMP_DIR=$(mktemp -d 2>/dev/null || mktemp -d -t 'crd')
 
 VERSION=$1
 CHART_HOME=../k8ssandra/charts/cass-operator
-CRD_TARGET_PATH=$CRD_TMP_DIR
 TEMPLATE_HOME=$CHART_HOME/templates
+CRD_TARGET_PATH=$TEMPLATE_HOME
 
 # Checkout tag
 git checkout v$VERSION
 
 # Create CRDs
-kustomize build config/crd  --output $CRD_TARGET_PATH
+kustomize build config/crd  --output $CRD_TMP_DIR
 
 # Rename generated CRDs to shorter format
-for f in $CRD_TARGET_PATH/*; do
+for f in $CRD_TMP_DIR/*; do
     TARGET_FILENAME=$(yq '.spec.names.plural' $f).yaml
-    mv $f $CRD_TARGET_PATH/$TARGET_FILENAME
+    mv $f $CRD_TMP_DIR/$TARGET_FILENAME
 done
 
-# Add Helm conditionals to the end and beginning of CRDs before applying them to the templates path
-echo "Updating CRDs in" $TEMPLATE_HOME
-CRD_FILE_NAME=$TEMPLATE_HOME/crds.yaml
-echo '{{- if .Values.manageCrds }}' > $CRD_FILE_NAME
-
-declare -a files
-files=($CRD_TARGET_PATH/*)
-for i in ${!files[@]}; do
-    echo "Processing " ${files[$i]}
-    yq -i '.metadata.annotations."helm.sh/resource-policy" = "keep"' ${files[$i]}
-    cat ${files[$i]} >> $CRD_FILE_NAME
-    if [[ $i -lt ${#files[@]}-1 ]]; then
-        echo "---" >> $CRD_FILE_NAME
-    fi
-done
-echo '{{- end }}' >> $CRD_FILE_NAME
+if [ "$LEGACY" == true ]; then
+    echo "Updating CRDs for legacy CRD handling in Helm chart"
+
+    # Update CRDs for legacy Helm chart
+    CRD_TARGET_PATH=$CHART_HOME/crds
+    cp -r $CRD_TMP_DIR/* $CRD_TARGET_PATH
+else
+    # Add Helm conditionals to the end and beginning of CRDs before applying them to the templates path
+    echo "Updating CRDs in" $TEMPLATE_HOME
+    CRD_FILE_NAME=$CRD_TARGET_PATH/crds.yaml
+    echo '{{- if .Values.manageCrds }}' > $CRD_FILE_NAME
+
+    declare -a files
+    files=($CRD_TMP_DIR/*)
+    for i in ${!files[@]}; do
+        echo "Processing " ${files[$i]}
+        yq -i '.metadata.annotations."helm.sh/resource-policy" = "keep"' ${files[$i]}
+        cat ${files[$i]} >> $CRD_FILE_NAME
+        if [[ $i -lt ${#files[@]}-1 ]]; then
+            echo "---" >> $CRD_FILE_NAME
+        fi
+    done
+    echo '{{- end }}' >> $CRD_FILE_NAME
+fi
 
 rm -fr $CRD_TMP_DIR
 
+# Update role.yaml
+echo "Updating role.yaml"
+ROLE_FILE_NAME=$TEMPLATE_HOME/role.yaml
+cat <<'EOF' > $ROLE_FILE_NAME
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRole
+metadata:
+  name: {{ include "k8ssandra-common.fullname" . }}
+  labels: {{ include "k8ssandra-common.labels" . | indent 4 }}
+{{- if .Values.global.clusterScoped }}
+EOF
+yq -N eval-all '.rules = (.rules as $item ireduce ([]; . *+ $item)) | select(di == 0) | with_entries(select(.key | test("rules")))' config/rbac/role.yaml >> $ROLE_FILE_NAME
+echo '{{- else }}' >> $ROLE_FILE_NAME
+yq -N 'select(di == 0) | with_entries(select(.key | test("rules")))' config/rbac/role.yaml >> $ROLE_FILE_NAME
+cat <<'EOF' >> $ROLE_FILE_NAME
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: Role
+metadata:
+  name: {{ template "k8ssandra-common.fullname" . }}
+  labels: {{ include "k8ssandra-common.labels" . | indent 4 }}
+EOF
+yq -N 'select(di == 1) | with_entries(select(.key | test("rules")))' config/rbac/role.yaml >> $ROLE_FILE_NAME
+echo '{{- end }}' >> $ROLE_FILE_NAME
+
 # Update version of the Chart.yaml automatically (to next minor one)
 CURRENT_VERSION=$(yq '.version' $CHART_HOME/Chart.yaml)
 next_minor_version