Move codes to pkg (#46)

pkg/ingress/kube/annotations/util.go

@@ -0,0 +1,54 @@
+// Copyright (c) 2022 Alibaba Group Holding Ltd.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package annotations
+
+import (
+	"strings"
+
+	"istio.io/istio/pilot/pkg/model"
+	"istio.io/istio/pilot/pkg/model/credentials"
+	"istio.io/istio/pilot/pkg/util/sets"
+)
+
+func extraSecret(name string) model.NamespacedName {
+	result := model.NamespacedName{}
+	res := strings.TrimPrefix(name, credentials.KubernetesIngressSecretTypeURI)
+	split := strings.Split(res, "/")
+	if len(split) != 3 {
+		return result
+	}
+
+	return model.NamespacedName{
+		Namespace: split[1],
+		Name:      split[2],
+	}
+}
+
+func splitBySeparator(content, separator string) []string {
+	var result []string
+	parts := strings.Split(content, separator)
+	for _, part := range parts {
+		part = strings.TrimSpace(part)
+		if part == "" {
+			continue
+		}
+		result = append(result, part)
+	}
+	return result
+}
+
+func toSet(slice []string) sets.Set {
+	return sets.NewSet(slice...)
+}