istio.io/istio@v0.0.0-20240520182934-d79c90f27776/pkg/config/gateway/kube/gatewayapi.go (about)

     1  // Copyright Istio Authors
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package kube
    16  
    17  import (
    18  	"fmt"
    19  	"strings"
    20  
    21  	"istio.io/istio/pkg/config/constants"
    22  )
    23  
    24  // IsInternalGatewayReference returns true if gatewayName is referencing the internal
    25  // Istio Gateway corresponding to a Kubernetes Gateway API gateway.
    26  func IsInternalGatewayReference(gatewayName string) bool {
    27  	parts := strings.SplitN(gatewayName, "/", 2)
    28  	if len(parts) == 2 {
    29  		gatewayName = parts[1]
    30  	}
    31  	return strings.Contains(gatewayName, fmt.Sprintf("-%s-", constants.KubernetesGatewayName))
    32  }
    33  
    34  // InternalGatewayName returns the name of the internal Istio Gateway corresponding to the
    35  // specified gateway-api gateway and listener.
    36  func InternalGatewayName(gwName, lName string) string {
    37  	return fmt.Sprintf("%s-%s-%s", gwName, constants.KubernetesGatewayName, lName)
    38  }