sigs.k8s.io/external-dns@v0.14.1/provider/zonefinder.go (about)

     1  /*
     2  Copyright 2017 The Kubernetes Authors.
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8      http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  package provider
    18  
    19  import "strings"
    20  
    21  type ZoneIDName map[string]string
    22  
    23  func (z ZoneIDName) Add(zoneID, zoneName string) {
    24  	z[zoneID] = zoneName
    25  }
    26  
    27  func (z ZoneIDName) FindZone(hostname string) (suitableZoneID, suitableZoneName string) {
    28  	for zoneID, zoneName := range z {
    29  		if hostname == zoneName || strings.HasSuffix(hostname, "."+zoneName) {
    30  			if suitableZoneName == "" || len(zoneName) > len(suitableZoneName) {
    31  				suitableZoneID = zoneID
    32  				suitableZoneName = zoneName
    33  			}
    34  		}
    35  	}
    36  	return
    37  }