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8fe950f4bc
https://github.com/coredns/coredns/issues/3810 Signed-off-by: msedzins <msedzins@gmail.com> Signed-off-by: msedzins <macbookpro@mbp-macbookpro-2.home> Co-authored-by: msedzins <macbookpro@mbp-macbookpro-2.home>
337 lines
12 KiB
Go
337 lines
12 KiB
Go
// +build etcd
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package etcd
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import (
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"context"
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"encoding/json"
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"testing"
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"time"
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"github.com/coredns/coredns/plugin/etcd/msg"
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"github.com/coredns/coredns/plugin/pkg/dnstest"
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"github.com/coredns/coredns/plugin/pkg/tls"
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"github.com/coredns/coredns/plugin/pkg/upstream"
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"github.com/coredns/coredns/plugin/test"
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"github.com/miekg/dns"
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)
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func init() {
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ctxt = context.TODO()
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}
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// Note the key is encoded as DNS name, while in "reality" it is a etcd path.
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var services = []*msg.Service{
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{Host: "dev.server1", Port: 8080, Key: "a.server1.dev.region1.skydns.test."},
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{Host: "10.0.0.1", Port: 8080, Key: "a.server1.prod.region1.skydns.test."},
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{Host: "10.0.0.2", Port: 8080, Key: "b.server1.prod.region1.skydns.test."},
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{Host: "::1", Port: 8080, Key: "b.server6.prod.region1.skydns.test."},
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// TXT record in server1.
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{Host: "", Port: 8080, Text: "sometext", Key: "txt.server1.prod.region1.skydns.test."},
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// Unresolvable internal name.
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{Host: "unresolvable.skydns.test", Key: "cname.prod.region1.skydns.test."},
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// Priority.
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{Host: "priority.server1", Priority: 333, Port: 8080, Key: "priority.skydns.test."},
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// Subdomain.
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{Host: "sub.server1", Port: 0, Key: "a.sub.region1.skydns.test."},
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{Host: "sub.server2", Port: 80, Key: "b.sub.region1.skydns.test."},
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{Host: "10.0.0.1", Port: 8080, Key: "c.sub.region1.skydns.test."},
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// Cname loop.
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{Host: "a.cname.skydns.test", Key: "b.cname.skydns.test."},
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{Host: "b.cname.skydns.test", Key: "a.cname.skydns.test."},
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// Nameservers.
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{Host: "10.0.0.2", Key: "a.ns.dns.skydns.test."},
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{Host: "10.0.0.3", Key: "b.ns.dns.skydns.test."},
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// Zone name as A record (basic, return all)
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{Host: "10.0.0.2", Key: "x.skydns_zonea.test."},
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{Host: "10.0.0.3", Key: "y.skydns_zonea.test."},
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// Zone name as A (single entry).
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{Host: "10.0.0.2", Key: "x.skydns_zoneb.test."},
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{Host: "10.0.0.3", Key: "y.skydns_zoneb.test."},
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{Host: "10.0.0.4", Key: "apex.dns.skydns_zoneb.test."},
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// A zone record (rr multiple entries).
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{Host: "10.0.0.2", Key: "x.skydns_zonec.test."},
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{Host: "10.0.0.3", Key: "y.skydns_zonec.test."},
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{Host: "10.0.0.4", Key: "a1.apex.dns.skydns_zonec.test."},
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{Host: "10.0.0.5", Key: "a2.apex.dns.skydns_zonec.test."},
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// AAAA zone record (rr multiple entries mixed with A).
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{Host: "10.0.0.2", Key: "x.skydns_zoned.test."},
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{Host: "10.0.0.3", Key: "y.skydns_zoned.test."},
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{Host: "10.0.0.4", Key: "a1.apex.dns.skydns_zoned.test."},
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{Host: "10.0.0.5", Key: "a2.apex.dns.skydns_zoned.test."},
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{Host: "2003::8:1", Key: "a3.apex.dns.skydns_zoned.test."},
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{Host: "2003::8:2", Key: "a4.apex.dns.skydns_zoned.test."},
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// Reverse.
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{Host: "reverse.example.com", Key: "1.0.0.10.in-addr.arpa."}, // 10.0.0.1
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}
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var dnsTestCases = []test.Case{
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// SRV Test
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{
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Qname: "a.server1.dev.region1.skydns.test.", Qtype: dns.TypeSRV,
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Answer: []dns.RR{test.SRV("a.server1.dev.region1.skydns.test. 300 SRV 10 100 8080 dev.server1.")},
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},
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// SRV Test (case test)
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{
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Qname: "a.SERVer1.dEv.region1.skydns.tEst.", Qtype: dns.TypeSRV,
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Answer: []dns.RR{test.SRV("a.SERVer1.dEv.region1.skydns.tEst. 300 SRV 10 100 8080 dev.server1.")},
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},
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// NXDOMAIN Test
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{
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Qname: "doesnotexist.skydns.test.", Qtype: dns.TypeA,
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Rcode: dns.RcodeNameError,
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Ns: []dns.RR{
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test.SOA("skydns.test. 30 SOA ns.dns.skydns.test. hostmaster.skydns.test. 0 0 0 0 0"),
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},
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},
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// A Test
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{
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Qname: "a.server1.prod.region1.skydns.test.", Qtype: dns.TypeA,
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Answer: []dns.RR{test.A("a.server1.prod.region1.skydns.test. 300 A 10.0.0.1")},
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},
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// SRV Test where target is IP address
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{
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Qname: "a.server1.prod.region1.skydns.test.", Qtype: dns.TypeSRV,
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Answer: []dns.RR{test.SRV("a.server1.prod.region1.skydns.test. 300 SRV 10 100 8080 a.server1.prod.region1.skydns.test.")},
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Extra: []dns.RR{test.A("a.server1.prod.region1.skydns.test. 300 A 10.0.0.1")},
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},
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// AAAA Test
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{
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Qname: "b.server6.prod.region1.skydns.test.", Qtype: dns.TypeAAAA,
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Answer: []dns.RR{test.AAAA("b.server6.prod.region1.skydns.test. 300 AAAA ::1")},
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},
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// Multiple A Record Test
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{
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Qname: "server1.prod.region1.skydns.test.", Qtype: dns.TypeA,
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Answer: []dns.RR{
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test.A("server1.prod.region1.skydns.test. 300 A 10.0.0.1"),
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test.A("server1.prod.region1.skydns.test. 300 A 10.0.0.2"),
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},
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},
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// Priority Test
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{
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Qname: "priority.skydns.test.", Qtype: dns.TypeSRV,
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Answer: []dns.RR{test.SRV("priority.skydns.test. 300 SRV 333 100 8080 priority.server1.")},
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},
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// Subdomain Test
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{
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Qname: "sub.region1.skydns.test.", Qtype: dns.TypeSRV,
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Answer: []dns.RR{
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test.SRV("sub.region1.skydns.test. 300 IN SRV 10 33 0 sub.server1."),
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test.SRV("sub.region1.skydns.test. 300 IN SRV 10 33 80 sub.server2."),
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test.SRV("sub.region1.skydns.test. 300 IN SRV 10 33 8080 c.sub.region1.skydns.test."),
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},
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Extra: []dns.RR{test.A("c.sub.region1.skydns.test. 300 IN A 10.0.0.1")},
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},
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// CNAME (unresolvable internal name)
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{
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Qname: "cname.prod.region1.skydns.test.", Qtype: dns.TypeA,
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Ns: []dns.RR{test.SOA("skydns.test. 30 SOA ns.dns.skydns.test. hostmaster.skydns.test. 0 0 0 0 0")},
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},
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// TXT Test
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{
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Qname: "txt.server1.prod.region1.skydns.test.", Qtype: dns.TypeTXT,
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Answer: []dns.RR{
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test.TXT("txt.server1.prod.region1.skydns.test. 303 IN TXT sometext"),
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},
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},
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// Wildcard Test
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{
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Qname: "*.region1.skydns.test.", Qtype: dns.TypeSRV,
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Answer: []dns.RR{
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test.SRV("*.region1.skydns.test. 300 IN SRV 10 12 0 sub.server1."),
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test.SRV("*.region1.skydns.test. 300 IN SRV 10 12 0 unresolvable.skydns.test."),
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test.SRV("*.region1.skydns.test. 300 IN SRV 10 12 80 sub.server2."),
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test.SRV("*.region1.skydns.test. 300 IN SRV 10 12 8080 a.server1.prod.region1.skydns.test."),
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test.SRV("*.region1.skydns.test. 300 IN SRV 10 12 8080 b.server1.prod.region1.skydns.test."),
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test.SRV("*.region1.skydns.test. 300 IN SRV 10 12 8080 b.server6.prod.region1.skydns.test."),
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test.SRV("*.region1.skydns.test. 300 IN SRV 10 12 8080 c.sub.region1.skydns.test."),
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test.SRV("*.region1.skydns.test. 300 IN SRV 10 12 8080 dev.server1."),
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},
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Extra: []dns.RR{
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test.A("a.server1.prod.region1.skydns.test. 300 IN A 10.0.0.1"),
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test.A("b.server1.prod.region1.skydns.test. 300 IN A 10.0.0.2"),
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test.AAAA("b.server6.prod.region1.skydns.test. 300 IN AAAA ::1"),
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test.A("c.sub.region1.skydns.test. 300 IN A 10.0.0.1"),
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},
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},
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// Wildcard Test
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{
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Qname: "prod.*.skydns.test.", Qtype: dns.TypeSRV,
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Answer: []dns.RR{
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test.SRV("prod.*.skydns.test. 300 IN SRV 10 25 0 unresolvable.skydns.test."),
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test.SRV("prod.*.skydns.test. 300 IN SRV 10 25 8080 a.server1.prod.region1.skydns.test."),
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test.SRV("prod.*.skydns.test. 300 IN SRV 10 25 8080 b.server1.prod.region1.skydns.test."),
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test.SRV("prod.*.skydns.test. 300 IN SRV 10 25 8080 b.server6.prod.region1.skydns.test."),
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},
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Extra: []dns.RR{
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test.A("a.server1.prod.region1.skydns.test. 300 IN A 10.0.0.1"),
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test.A("b.server1.prod.region1.skydns.test. 300 IN A 10.0.0.2"),
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test.AAAA("b.server6.prod.region1.skydns.test. 300 IN AAAA ::1"),
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},
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},
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// Wildcard Test
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{
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Qname: "prod.any.skydns.test.", Qtype: dns.TypeSRV,
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Answer: []dns.RR{
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test.SRV("prod.any.skydns.test. 300 IN SRV 10 25 0 unresolvable.skydns.test."),
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test.SRV("prod.any.skydns.test. 300 IN SRV 10 25 8080 a.server1.prod.region1.skydns.test."),
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test.SRV("prod.any.skydns.test. 300 IN SRV 10 25 8080 b.server1.prod.region1.skydns.test."),
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test.SRV("prod.any.skydns.test. 300 IN SRV 10 25 8080 b.server6.prod.region1.skydns.test."),
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},
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Extra: []dns.RR{
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test.A("a.server1.prod.region1.skydns.test. 300 IN A 10.0.0.1"),
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test.A("b.server1.prod.region1.skydns.test. 300 IN A 10.0.0.2"),
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test.AAAA("b.server6.prod.region1.skydns.test. 300 IN AAAA ::1"),
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},
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},
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// CNAME loop detection
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{
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Qname: "a.cname.skydns.test.", Qtype: dns.TypeA,
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Ns: []dns.RR{test.SOA("skydns.test. 30 SOA ns.dns.skydns.test. hostmaster.skydns.test. 1407441600 28800 7200 604800 60")},
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},
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// NODATA Test
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{
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Qname: "a.server1.dev.region1.skydns.test.", Qtype: dns.TypeTXT,
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Ns: []dns.RR{test.SOA("skydns.test. 30 SOA ns.dns.skydns.test. hostmaster.skydns.test. 0 0 0 0 0")},
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},
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// NODATA Test
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{
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Qname: "a.server1.dev.region1.skydns.test.", Qtype: dns.TypeHINFO,
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Ns: []dns.RR{test.SOA("skydns.test. 30 SOA ns.dns.skydns.test. hostmaster.skydns.test. 0 0 0 0 0")},
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},
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// NXDOMAIN Test
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{
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Qname: "a.server1.nonexistent.region1.skydns.test.", Qtype: dns.TypeHINFO, Rcode: dns.RcodeNameError,
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Ns: []dns.RR{test.SOA("skydns.test. 30 SOA ns.dns.skydns.test. hostmaster.skydns.test. 0 0 0 0 0")},
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},
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{
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Qname: "skydns.test.", Qtype: dns.TypeSOA,
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Answer: []dns.RR{test.SOA("skydns.test. 30 IN SOA ns.dns.skydns.test. hostmaster.skydns.test. 1460498836 14400 3600 604800 60")},
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},
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// NS Record Test
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{
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Qname: "skydns.test.", Qtype: dns.TypeNS,
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Answer: []dns.RR{
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test.NS("skydns.test. 300 NS a.ns.dns.skydns.test."),
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test.NS("skydns.test. 300 NS b.ns.dns.skydns.test."),
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},
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Extra: []dns.RR{
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test.A("a.ns.dns.skydns.test. 300 A 10.0.0.2"),
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test.A("b.ns.dns.skydns.test. 300 A 10.0.0.3"),
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},
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},
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// NS Record Test
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{
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Qname: "a.skydns.test.", Qtype: dns.TypeNS, Rcode: dns.RcodeNameError,
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Ns: []dns.RR{test.SOA("skydns.test. 30 IN SOA ns.dns.skydns.test. hostmaster.skydns.test. 1460498836 14400 3600 604800 60")},
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},
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// A Record For NS Record Test
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{
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Qname: "ns.dns.skydns.test.", Qtype: dns.TypeA,
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Answer: []dns.RR{
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test.A("ns.dns.skydns.test. 300 A 10.0.0.2"),
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test.A("ns.dns.skydns.test. 300 A 10.0.0.3"),
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},
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},
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{
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Qname: "skydns_extra.test.", Qtype: dns.TypeSOA,
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Answer: []dns.RR{test.SOA("skydns_extra.test. 30 IN SOA ns.dns.skydns_extra.test. hostmaster.skydns_extra.test. 1460498836 14400 3600 604800 60")},
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},
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// A Record Test for backward compatibility for zone records
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{
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Qname: "skydns_zonea.test.", Qtype: dns.TypeA,
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Answer: []dns.RR{
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test.A("skydns_zonea.test. 300 A 10.0.0.2"),
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test.A("skydns_zonea.test. 300 A 10.0.0.3"),
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},
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},
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// A Record Test for single A zone record
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{
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Qname: "skydns_zoneb.test.", Qtype: dns.TypeA,
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Answer: []dns.RR{test.A("skydns_zoneb.test. 300 A 10.0.0.4")},
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},
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// A Record Test for multiple A zone records
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{
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Qname: "skydns_zonec.test.", Qtype: dns.TypeA,
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Answer: []dns.RR{
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test.A("skydns_zonec.test. 300 A 10.0.0.4"),
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test.A("skydns_zonec.test. 300 A 10.0.0.5"),
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},
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},
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// A Record Test for multiple mixed A and AAAA records
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{
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Qname: "skydns_zoned.test.", Qtype: dns.TypeA,
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Answer: []dns.RR{
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test.A("skydns_zoned.test. 300 A 10.0.0.4"),
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test.A("skydns_zoned.test. 300 A 10.0.0.5"),
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},
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},
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// AAAA Record Test for multiple mixed A and AAAA records
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{
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Qname: "skydns_zoned.test.", Qtype: dns.TypeAAAA,
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Answer: []dns.RR{
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test.AAAA("skydns_zoned.test. 300 AAAA 2003::8:1"),
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test.AAAA("skydns_zoned.test. 300 AAAA 2003::8:2"),
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},
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},
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// Reverse lookup
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{
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Qname: "1.0.0.10.in-addr.arpa.", Qtype: dns.TypePTR,
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Answer: []dns.RR{test.PTR("1.0.0.10.in-addr.arpa. 300 PTR reverse.example.com.")},
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},
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}
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func newEtcdPlugin() *Etcd {
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ctxt = context.TODO()
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endpoints := []string{"http://localhost:2379"}
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tlsc, _ := tls.NewTLSConfigFromArgs()
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client, _ := newEtcdClient(endpoints, tlsc, "", "")
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return &Etcd{
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Upstream: upstream.New(),
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PathPrefix: "skydns",
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Zones: []string{"skydns.test.", "skydns_extra.test.", "skydns_zonea.test.", "skydns_zoneb.test.", "skydns_zonec.test.", "skydns_zoned.test.", "in-addr.arpa."},
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Client: client,
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}
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}
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func set(t *testing.T, e *Etcd, k string, ttl time.Duration, m *msg.Service) {
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b, err := json.Marshal(m)
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if err != nil {
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t.Fatal(err)
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}
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path, _ := msg.PathWithWildcard(k, e.PathPrefix)
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e.Client.KV.Put(ctxt, path, string(b))
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}
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func delete(t *testing.T, e *Etcd, k string) {
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path, _ := msg.PathWithWildcard(k, e.PathPrefix)
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e.Client.Delete(ctxt, path)
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}
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func TestLookup(t *testing.T) {
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etc := newEtcdPlugin()
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for _, serv := range services {
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set(t, etc, serv.Key, 0, serv)
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defer delete(t, etc, serv.Key)
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}
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for _, tc := range dnsTestCases {
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m := tc.Msg()
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rec := dnstest.NewRecorder(&test.ResponseWriter{})
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etc.ServeDNS(ctxt, rec, m)
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resp := rec.Msg
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if err := test.SortAndCheck(resp, tc); err != nil {
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t.Error(err)
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}
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}
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}
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var ctxt context.Context
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