snapshot of https://github.com/cortezaproject/corteza.git (2024.9.x, 2026-09-18; blobs > 131072B omitted)

server/pkg/envoy/marshaler.go

@@ -0,0 +1,46 @@
+package envoy
+
+import (
+	"fmt"
+	"reflect"
+
+	"github.com/cortezaproject/corteza/server/pkg/envoy/resource"
+)
+
+type (
+	Marshaller interface {
+		MarshalEnvoy() ([]resource.Interface, error)
+	}
+)
+
+// MarshalMerge takes one or more nodes and Marshals and merges all
+func CollectNodes(ii ...interface{}) (nn []resource.Interface, err error) {
+	for _, i := range ii {
+		// i == nil is not enough in go
+		if i == nil || (reflect.ValueOf(i).Kind() == reflect.Ptr && reflect.ValueOf(i).IsNil()) {
+			continue
+		}
+
+		switch c := i.(type) {
+		// case NodeSet:
+		// 	nn = append(nn, c...)
+		case resource.Interface:
+			nn = append(nn, c)
+
+		case []resource.Interface:
+			nn = append(nn, c...)
+
+		case Marshaller:
+			if tmp, err := c.MarshalEnvoy(); err != nil {
+				return nil, err
+			} else {
+				nn = append(nn, tmp...)
+			}
+		default:
+			// @todo resoruceset?
+			return nil, fmt.Errorf("failed to merge %T; expecting Resource, ResourceSet? or Marshaller interface", i)
+		}
+	}
+
+	return nn, nil
+}