Support wasm api (#129)

pkg/ingress/kube/wasmplugin/controller.go

@@ -0,0 +1,46 @@
+// 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 wasmplugin
+
+import (
+	"time"
+
+	"istio.io/istio/pkg/kube/controllers"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/types"
+	"k8s.io/client-go/tools/cache"
+
+	v1 "github.com/alibaba/higress/client/pkg/apis/extensions/v1alpha1"
+	"github.com/alibaba/higress/client/pkg/clientset/versioned"
+	informersv1 "github.com/alibaba/higress/client/pkg/informers/externalversions/extensions/v1alpha1"
+	listersv1 "github.com/alibaba/higress/client/pkg/listers/extensions/v1alpha1"
+	"github.com/alibaba/higress/pkg/ingress/kube/controller"
+	kubeclient "github.com/alibaba/higress/pkg/kube"
+)
+
+type WasmPluginController controller.Controller[listersv1.WasmPluginLister]
+
+func NewController(client kubeclient.Client, clusterId string) WasmPluginController {
+	informer := client.HigressInformer().InformerFor(&v1.WasmPlugin{}, func(k versioned.Interface, resync time.Duration) cache.SharedIndexInformer {
+		return informersv1.NewWasmPluginInformer(k, metav1.NamespaceAll, resync,
+			cache.Indexers{cache.NamespaceIndex: cache.MetaNamespaceIndexFunc})
+	})
+	return controller.NewCommonController("wasmplugin", listersv1.NewWasmPluginLister(informer.GetIndexer()),
+		informer, GetWasmPlugin, clusterId)
+}
+
+func GetWasmPlugin(lister listersv1.WasmPluginLister, namespacedName types.NamespacedName) (controllers.Object, error) {
+	return lister.WasmPlugins(namespacedName.Namespace).Get(namespacedName.Name)
+}