Default set ingress class as higress and enable ingress status. (#155)

pkg/bootstrap/server.go

@@ -88,12 +88,20 @@ type RegistryOptions struct {
 }
 
 type ServerArgs struct {
-	Debug                bool
-	MeshId               string
-	RegionId             string
-	NativeIstio          bool
-	HttpAddress          string
-	GrpcAddress          string
+	Debug       bool
+	MeshId      string
+	RegionId    string
+	NativeIstio bool
+	HttpAddress string
+	GrpcAddress string
+
+	// IngressClass filters which ingress resources the higress controller watches.
+	// The default ingress class is higress.
+	// There are some special cases for special ingress class.
+	// 1. When the ingress class is set as nginx, the higress controller will watch ingress
+	// resources with the nginx ingress class or without any ingress class.
+	// 2. When the ingress class is set empty, the higress controller will watch all ingress
+	// resources in the k8s cluster.
 	IngressClass         string
 	EnableStatus         bool
 	WatchNamespace       string

pkg/config/constants/constants.go

@@ -0,0 +1,17 @@
+// 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 constants
+
+const DefaultIngressClass = "higress"