Support nacos discovery (#108)

pkg/ingress/kube/secret/controller.go

@@ -0,0 +1,53 @@
+// 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 secret
+
+import (
+	"time"
+
+	kubeclient "istio.io/istio/pkg/kube"
+	"istio.io/istio/pkg/kube/controllers"
+	v1 "k8s.io/api/core/v1"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/fields"
+	"k8s.io/apimachinery/pkg/types"
+	informersv1 "k8s.io/client-go/informers/core/v1"
+	"k8s.io/client-go/kubernetes"
+	listersv1 "k8s.io/client-go/listers/core/v1"
+	"k8s.io/client-go/tools/cache"
+
+	"github.com/alibaba/higress/pkg/ingress/kube/controller"
+)
+
+type SecretController controller.Controller[listersv1.SecretLister]
+
+func NewController(client kubeclient.Client, clusterId string) SecretController {
+	informer := client.KubeInformer().InformerFor(&v1.Secret{}, func(k kubernetes.Interface, resync time.Duration) cache.SharedIndexInformer {
+		return informersv1.NewFilteredSecretInformer(
+			k, metav1.NamespaceAll, resync, cache.Indexers{cache.NamespaceIndex: cache.MetaNamespaceIndexFunc},
+			func(options *metav1.ListOptions) {
+				options.FieldSelector = fields.AndSelectors(
+					fields.OneTermNotEqualSelector("type", "helm.sh/release.v1"),
+					fields.OneTermNotEqualSelector("type", string(v1.SecretTypeServiceAccountToken)),
+				).String()
+			},
+		)
+	})
+	return controller.NewCommonController("secret", listersv1.NewSecretLister(informer.GetIndexer()), informer, GetSecret, clusterId)
+}
+
+func GetSecret(lister listersv1.SecretLister, namespacedName types.NamespacedName) (controllers.Object, error) {
+	return lister.Secrets(namespacedName.Namespace).Get(namespacedName.Name)
+}