use plain pkg module

Signed-off-by: Jörn Friedrich Dreyer <jfd@butonic.de>

pkg/roles/util.go

@@ -0,0 +1,22 @@
+package roles
+
+import (
+	"context"
+	"encoding/json"
+
+	"github.com/opencloud-eu/opencloud/pkg/middleware"
+	"go-micro.dev/v4/metadata"
+)
+
+// ReadRoleIDsFromContext extracts roleIDs from the metadata context and returns them as []string
+func ReadRoleIDsFromContext(ctx context.Context) (roleIDs []string, ok bool) {
+	roleIDsJSON, ok := metadata.Get(ctx, middleware.RoleIDs)
+	if !ok {
+		return nil, false
+	}
+	err := json.Unmarshal([]byte(roleIDsJSON), &roleIDs)
+	if err != nil {
+		return nil, false
+	}
+	return roleIDs, true
+}