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Resolve TXT records via CNAME (#3557)

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* Add test case for TXT lookup via CNAME

Signed-off-by: Jonathan Nagy <nagytech@users.noreply.github.com>

* Return HostType of explicit TXT records

Signed-off-by: Jonathan Nagy <nagytech@users.noreply.github.com>

* Adapt TXT method lookup to allow lookup via CNAME

Signed-off-by: Jonathan Nagy <nagytech@users.noreply.github.com>

* Implement lookup of TXT records via CNAME

Signed-off-by: Jonathan Nagy <nagytech@users.noreply.github.com>
This commit is contained in:
Jonathan Nagy
2020-01-04 00:16:04 +11:00
committed by Miek Gieben
parent acac649c1b
commit e3266d24f7
6 changed files with 80 additions and 12 deletions
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12
plugin/etcd/cname_test.go
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@@ -58,6 +58,9 @@ var servicesCname = []*msg.Service{
{Host: "cname6.region2.skydns.test", Key: "cname5.region2.skydns.test."},
{Host: "endpoint.region2.skydns.test", Key: "cname6.region2.skydns.test."},
{Host: "mainendpoint.region2.skydns.test", Key: "region2.skydns.test."},
{Host: "cname2.region3.skydns.test", Key: "cname3.region3.skydns.test."},
{Host: "cname1.region3.skydns.test", Key: "cname2.region3.skydns.test."},
{Host: "region3.skydns.test", Key: "cname1.region3.skydns.test."},
{Host: "", Key: "region3.skydns.test.", Text: "SOME-RECORD-TEXT"},
{Host: "10.240.0.1", Key: "endpoint.region2.skydns.test."},
}
@@ -91,4 +94,13 @@ var dnsTestCasesCname = []test.Case{
test.SOA("skydns.test. 303 IN SOA ns.dns.skydns.test. hostmaster.skydns.test. 1546424605 7200 1800 86400 30"),
},
},
{
Qname: "cname3.region3.skydns.test.", Qtype: dns.TypeTXT,
Answer: []dns.RR{
test.CNAME("cname3.region3.skydns.test. 300 IN CNAME cname2.region3.skydns.test."),
test.CNAME("cname2.region3.skydns.test. 300 IN CNAME cname1.region3.skydns.test."),
test.CNAME("cname1.region3.skydns.test. 300 IN CNAME region3.skydns.test."),
test.TXT("region3.skydns.test. 300 IN TXT \"SOME-RECORD-TEXT\""),
},
},
}