Support templated packages

pkg/helpers/helm.go

@@ -0,0 +1,34 @@
+package helpers
+
+import (
+
+	"helm.sh/helm/v3/pkg/chart"
+	"helm.sh/helm/v3/pkg/chartutil"
+	"helm.sh/helm/v3/pkg/engine"
+	"github.com/pkg/errors"
+)
+
+// RenderHelm renders the template string with helm
+func RenderHelm(template string, values map[string]interface{}) (string,error) {
+	c := &chart.Chart{
+		Metadata: &chart.Metadata{
+			Name:    "",
+			Version: "",
+		},
+		Templates: []*chart.File{
+			{Name: "templates", Data: []byte(template)},
+		},
+		Values:    map[string]interface{}{"Values":values},
+	}
+
+	v, err := chartutil.CoalesceValues(c, map[string]interface{}{})
+	if err != nil {
+		return "",errors.Wrap(err,"while rendering template")
+	}
+	out, err := engine.Render(c, v)
+	if err != nil {
+		return "",errors.Wrap(err,"while rendering template")
+	}
+
+	return out["templates"],nil
+}