mirror of
https://github.com/kubernetes-sigs/external-dns.git
synced 2025-11-04 04:31:00 +01:00
68 lines
2.1 KiB
Go
68 lines
2.1 KiB
Go
/*
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Copyright 2025 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package source
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import (
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"fmt"
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"net/netip"
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"strings"
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"sigs.k8s.io/external-dns/endpoint"
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)
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// suitableType returns the DNS resource record type suitable for the target.
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// In this case type A/AAAA for IPs and type CNAME for everything else.
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func suitableType(target string) string {
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netIP, err := netip.ParseAddr(target)
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if err != nil {
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return endpoint.RecordTypeCNAME
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}
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switch {
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case netIP.Is4():
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return endpoint.RecordTypeA
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case netIP.Is6():
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return endpoint.RecordTypeAAAA
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default:
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return endpoint.RecordTypeCNAME
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}
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}
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// ParseIngress parses an ingress string in the format "namespace/name" or "name".
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// It returns the namespace and name extracted from the string, or an error if the format is invalid.
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// If the namespace is not provided, it defaults to an empty string.
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func ParseIngress(ingress string) (namespace, name string, err error) {
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parts := strings.Split(ingress, "/")
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if len(parts) == 2 {
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namespace, name = parts[0], parts[1]
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} else if len(parts) == 1 {
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name = parts[0]
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} else {
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err = fmt.Errorf("invalid ingress name (name or namespace/name) found %q", ingress)
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}
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return
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}
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// MatchesServiceSelector checks if all key-value pairs in the selector map
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// are present and match the corresponding key-value pairs in the svcSelector map.
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// It returns true if all pairs match, otherwise it returns false.
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func MatchesServiceSelector(selector, svcSelector map[string]string) bool {
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for k, v := range selector {
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if lbl, ok := svcSelector[k]; !ok || lbl != v {
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return false
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}
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}
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return true
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}
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