mirror of
https://github.com/cert-manager/webhook-example.git
synced 2025-07-03 07:05:50 +02:00
75 lines
2 KiB
Go
75 lines
2 KiB
Go
/*
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Copyright 2019 The Jetstack cert-manager contributors.
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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 test
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import (
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"fmt"
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"sync"
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"github.com/go-logr/logr"
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"github.com/miekg/dns"
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)
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const (
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defaultTTL = 1
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)
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var requestCount = map[string]int{}
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var count int = 1
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// DNSHandler ...
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type DNSHandler struct {
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Log logr.Logger
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TxtRecords map[string][][]string
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Zones []string
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tsigZone string
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lock sync.Mutex
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}
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// ServeDNS ... implements github.com/miekg/dns.Handler
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// Imitates a DNS server
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func (b *DNSHandler) ServeDNS(w dns.ResponseWriter, req *dns.Msg) {
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b.lock.Lock()
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defer b.lock.Unlock()
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log := b.Log.WithName("serveDNS")
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//fmt.Printf("req: %v\n", req)
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m := new(dns.Msg)
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m.SetReply(req)
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defer w.WriteMsg(m)
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log.Info(m.String())
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log.Info("\n\nreq count: %v\nlen: %v\n\n", requestCount[req.Question[0].Name], len(b.TxtRecords[req.Question[0].Name]))
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if requestCount[req.Question[0].Name] < len(b.TxtRecords[req.Question[0].Name]) {
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// TODO: investigate why this is needed. It seems that the object isn't being released between tests
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if requestCount[req.Question[0].Name] == 3 {
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requestCount[req.Question[0].Name] = 0
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}
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for _, record := range b.TxtRecords[req.Question[0].Name][requestCount[req.Question[0].Name]] {
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fmt.Println("for loop")
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txtRR, _ := dns.NewRR(fmt.Sprintf("%s %d IN TXT %s", req.Question[0].Name, defaultTTL, record))
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m.Answer = append(m.Answer, txtRR)
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}
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requestCount[req.Question[0].Name]++
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}
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for _, rr := range m.Answer {
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log.Info("responding", "response", rr.String())
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}
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count++
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}
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