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|
package kubernetes
import (
"net"
"strings"
"testing"
"github.com/miekg/dns"
)
func TestKubernetesAXFR(t *testing.T) {
k := New([]string{"cluster.local."})
k.APIConn = &APIConnServeTest{}
k.Namespaces = map[string]struct{}{"testns": {}, "kube-system": {}}
k.localIPs = []net.IP{net.ParseIP("10.0.0.10")}
dnsmsg := &dns.Msg{}
dnsmsg.SetAxfr(k.Zones[0])
ch, err := k.Transfer(k.Zones[0], 0)
if err != nil {
t.Error(err)
}
validateAXFR(t, ch)
}
func TestKubernetesIXFRFallback(t *testing.T) {
k := New([]string{"cluster.local."})
k.APIConn = &APIConnServeTest{}
k.Namespaces = map[string]struct{}{"testns": {}, "kube-system": {}}
k.localIPs = []net.IP{net.ParseIP("10.0.0.10")}
dnsmsg := &dns.Msg{}
dnsmsg.SetAxfr(k.Zones[0])
ch, err := k.Transfer(k.Zones[0], 1)
if err != nil {
t.Error(err)
}
validateAXFR(t, ch)
}
func TestKubernetesIXFRCurrent(t *testing.T) {
k := New([]string{"cluster.local."})
k.APIConn = &APIConnServeTest{}
k.Namespaces = map[string]struct{}{"testns": {}, "kube-system": {}}
k.localIPs = []net.IP{net.ParseIP("10.0.0.10")}
dnsmsg := &dns.Msg{}
dnsmsg.SetAxfr(k.Zones[0])
ch, err := k.Transfer(k.Zones[0], 3)
if err != nil {
t.Error(err)
}
var gotRRs []dns.RR
for rrs := range ch {
gotRRs = append(gotRRs, rrs...)
}
// ensure only one record is returned
if len(gotRRs) > 1 {
t.Errorf("Expected only one answer, got %d", len(gotRRs))
}
// Ensure first record is a SOA
if gotRRs[0].Header().Rrtype != dns.TypeSOA {
t.Error("Invalid transfer response, does not start with SOA record")
}
}
func validateAXFR(t *testing.T, ch <-chan []dns.RR) {
xfr := []dns.RR{}
for rrs := range ch {
xfr = append(xfr, rrs...)
}
if xfr[0].Header().Rrtype != dns.TypeSOA {
t.Error("Invalid transfer response, does not start with SOA record")
}
zp := dns.NewZoneParser(strings.NewReader(expectedZone), "", "")
i := 0
for rr, ok := zp.Next(); ok; rr, ok = zp.Next() {
if !dns.IsDuplicate(rr, xfr[i]) {
t.Fatalf("Record %d, expected\n%v\n, got\n%v", i, rr, xfr[i])
}
i++
}
if err := zp.Err(); err != nil {
t.Fatal(err)
}
}
const expectedZone = `
cluster.local. 5 IN SOA ns.dns.cluster.local. hostmaster.cluster.local. 3 7200 1800 86400 5
cluster.local. 5 IN NS ns.dns.cluster.local.
ns.dns.cluster.local. 5 IN A 10.0.0.10
external.testns.svc.cluster.local. 5 IN CNAME ext.interwebs.test.
external-to-service.testns.svc.cluster.local. 5 IN CNAME svc1.testns.svc.cluster.local.
hdls1.testns.svc.cluster.local. 5 IN A 172.0.0.2
172-0-0-2.hdls1.testns.svc.cluster.local. 5 IN A 172.0.0.2
_http._tcp.hdls1.testns.svc.cluster.local. 5 IN SRV 0 16 80 172-0-0-2.hdls1.testns.svc.cluster.local.
hdls1.testns.svc.cluster.local. 5 IN A 172.0.0.3
172-0-0-3.hdls1.testns.svc.cluster.local. 5 IN A 172.0.0.3
_http._tcp.hdls1.testns.svc.cluster.local. 5 IN SRV 0 16 80 172-0-0-3.hdls1.testns.svc.cluster.local.
hdls1.testns.svc.cluster.local. 5 IN A 172.0.0.4
dup-name.hdls1.testns.svc.cluster.local. 5 IN A 172.0.0.4
_http._tcp.hdls1.testns.svc.cluster.local. 5 IN SRV 0 16 80 dup-name.hdls1.testns.svc.cluster.local.
hdls1.testns.svc.cluster.local. 5 IN A 172.0.0.5
dup-name.hdls1.testns.svc.cluster.local. 5 IN A 172.0.0.5
_http._tcp.hdls1.testns.svc.cluster.local. 5 IN SRV 0 16 80 dup-name.hdls1.testns.svc.cluster.local.
hdls1.testns.svc.cluster.local. 5 IN AAAA 5678:abcd::1
5678-abcd--1.hdls1.testns.svc.cluster.local. 5 IN AAAA 5678:abcd::1
_http._tcp.hdls1.testns.svc.cluster.local. 5 IN SRV 0 16 80 5678-abcd--1.hdls1.testns.svc.cluster.local.
hdls1.testns.svc.cluster.local. 5 IN AAAA 5678:abcd::2
5678-abcd--2.hdls1.testns.svc.cluster.local. 5 IN AAAA 5678:abcd::2
_http._tcp.hdls1.testns.svc.cluster.local. 5 IN SRV 0 16 80 5678-abcd--2.hdls1.testns.svc.cluster.local.
hdlsprtls.testns.svc.cluster.local. 5 IN A 172.0.0.20
172-0-0-20.hdlsprtls.testns.svc.cluster.local. 5 IN A 172.0.0.20
kubedns.kube-system.svc.cluster.local. 5 IN A 10.0.0.10
kubedns.kube-system.svc.cluster.local. 5 IN SRV 0 100 53 kubedns.kube-system.svc.cluster.local.
_dns._udp.kubedns.kube-system.svc.cluster.local. 5 IN SRV 0 100 53 kubedns.kube-system.svc.cluster.local.
svc-dual-stack.testns.svc.cluster.local. 5 IN A 10.0.0.3
svc-dual-stack.testns.svc.cluster.local. 5 IN AAAA 10::3
svc-dual-stack.testns.svc.cluster.local. 5 IN SRV 0 100 80 svc-dual-stack.testns.svc.cluster.local.
_http._tcp.svc-dual-stack.testns.svc.cluster.local. 5 IN SRV 0 100 80 svc-dual-stack.testns.svc.cluster.local.
svc1.testns.svc.cluster.local. 5 IN A 10.0.0.1
svc1.testns.svc.cluster.local. 5 IN SRV 0 100 80 svc1.testns.svc.cluster.local.
_http._tcp.svc1.testns.svc.cluster.local. 5 IN SRV 0 100 80 svc1.testns.svc.cluster.local.
svc6.testns.svc.cluster.local. 5 IN AAAA 1234:abcd::1
svc6.testns.svc.cluster.local. 5 IN SRV 0 100 80 svc6.testns.svc.cluster.local.
_http._tcp.svc6.testns.svc.cluster.local. 5 IN SRV 0 100 80 svc6.testns.svc.cluster.local.
svcempty.testns.svc.cluster.local. 5 IN A 10.0.0.1
svcempty.testns.svc.cluster.local. 5 IN SRV 0 100 80 svcempty.testns.svc.cluster.local.
_http._tcp.svcempty.testns.svc.cluster.local. 5 IN SRV 0 100 80 svcempty.testns.svc.cluster.local.
cluster.local. 5 IN SOA ns.dns.cluster.local. hostmaster.cluster.local. 3 7200 1800 86400 5
`
|
