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6493858893960c677f1af118ff53626366d40a22
coredns/middleware/etcd/lookup_test.go
Yong Tang 6493858893 Use context.TODO() in tests for go vet fix (#1017) 
See #997 #1000.

Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
2017-09-01 18:45:39 +02:00

274 lines
9.7 KiB
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// +build etcd
package etcd
import (
"context"
"encoding/json"
"testing"
"time"
"github.com/coredns/coredns/middleware/etcd/msg"
"github.com/coredns/coredns/middleware/pkg/dnsrecorder"
"github.com/coredns/coredns/middleware/pkg/singleflight"
"github.com/coredns/coredns/middleware/pkg/tls"
"github.com/coredns/coredns/middleware/proxy"
"github.com/coredns/coredns/middleware/test"
etcdc "github.com/coreos/etcd/client"
"github.com/miekg/dns"
)
func init() {
ctxt = context.TODO()
}
// Note the key is encoded as DNS name, while in "reality" it is a etcd path.
var services = []*msg.Service{
{Host: "dev.server1", Port: 8080, Key: "a.server1.dev.region1.skydns.test."},
{Host: "10.0.0.1", Port: 8080, Key: "a.server1.prod.region1.skydns.test."},
{Host: "10.0.0.2", Port: 8080, Key: "b.server1.prod.region1.skydns.test."},
{Host: "::1", Port: 8080, Key: "b.server6.prod.region1.skydns.test."},
// Unresolvable internal name.
{Host: "unresolvable.skydns.test", Key: "cname.prod.region1.skydns.test."},
// Priority.
{Host: "priority.server1", Priority: 333, Port: 8080, Key: "priority.skydns.test."},
// Subdomain.
{Host: "sub.server1", Port: 0, Key: "a.sub.region1.skydns.test."},
{Host: "sub.server2", Port: 80, Key: "b.sub.region1.skydns.test."},
{Host: "10.0.0.1", Port: 8080, Key: "c.sub.region1.skydns.test."},
// Cname loop.
{Host: "a.cname.skydns.test", Key: "b.cname.skydns.test."},
{Host: "b.cname.skydns.test", Key: "a.cname.skydns.test."},
// Nameservers.
{Host: "10.0.0.2", Key: "a.ns.dns.skydns.test."},
{Host: "10.0.0.3", Key: "b.ns.dns.skydns.test."},
// Reverse.
{Host: "reverse.example.com", Key: "1.0.0.10.in-addr.arpa."}, // 10.0.0.1
}
var dnsTestCases = []test.Case{
// SRV Test
{
Qname: "a.server1.dev.region1.skydns.test.", Qtype: dns.TypeSRV,
Answer: []dns.RR{test.SRV("a.server1.dev.region1.skydns.test. 300 SRV 10 100 8080 dev.server1.")},
},
// SRV Test (case test)
{
Qname: "a.SERVer1.dEv.region1.skydns.tEst.", Qtype: dns.TypeSRV,
Answer: []dns.RR{test.SRV("a.SERVer1.dEv.region1.skydns.tEst. 300 SRV 10 100 8080 dev.server1.")},
},
// NXDOMAIN Test
{
Qname: "doesnotexist.skydns.test.", Qtype: dns.TypeA,
Rcode: dns.RcodeNameError,
Ns: []dns.RR{
test.SOA("skydns.test. 300 SOA ns.dns.skydns.test. hostmaster.skydns.test. 0 0 0 0 0"),
},
},
// A Test
{
Qname: "a.server1.prod.region1.skydns.test.", Qtype: dns.TypeA,
Answer: []dns.RR{test.A("a.server1.prod.region1.skydns.test. 300 A 10.0.0.1")},
},
// SRV Test where target is IP address
{
Qname: "a.server1.prod.region1.skydns.test.", Qtype: dns.TypeSRV,
Answer: []dns.RR{test.SRV("a.server1.prod.region1.skydns.test. 300 SRV 10 100 8080 a.server1.prod.region1.skydns.test.")},
Extra: []dns.RR{test.A("a.server1.prod.region1.skydns.test. 300 A 10.0.0.1")},
},
// AAAA Test
{
Qname: "b.server6.prod.region1.skydns.test.", Qtype: dns.TypeAAAA,
Answer: []dns.RR{test.AAAA("b.server6.prod.region1.skydns.test. 300 AAAA ::1")},
},
// Multiple A Record Test
{
Qname: "server1.prod.region1.skydns.test.", Qtype: dns.TypeA,
Answer: []dns.RR{
test.A("server1.prod.region1.skydns.test. 300 A 10.0.0.1"),
test.A("server1.prod.region1.skydns.test. 300 A 10.0.0.2"),
},
},
// Priority Test
{
Qname: "priority.skydns.test.", Qtype: dns.TypeSRV,
Answer: []dns.RR{test.SRV("priority.skydns.test. 300 SRV 333 100 8080 priority.server1.")},
},
// Subdomain Test
{
Qname: "sub.region1.skydns.test.", Qtype: dns.TypeSRV,
Answer: []dns.RR{
test.SRV("sub.region1.skydns.test. 300 IN SRV 10 33 0 sub.server1."),
test.SRV("sub.region1.skydns.test. 300 IN SRV 10 33 80 sub.server2."),
test.SRV("sub.region1.skydns.test. 300 IN SRV 10 33 8080 c.sub.region1.skydns.test."),
},
Extra: []dns.RR{test.A("c.sub.region1.skydns.test. 300 IN A 10.0.0.1")},
},
// CNAME (unresolvable internal name)
{
Qname: "cname.prod.region1.skydns.test.", Qtype: dns.TypeA,
Ns: []dns.RR{test.SOA("skydns.test. 300 SOA ns.dns.skydns.test. hostmaster.skydns.test. 0 0 0 0 0")},
},
// Wildcard Test
{
Qname: "*.region1.skydns.test.", Qtype: dns.TypeSRV,
Answer: []dns.RR{
test.SRV("*.region1.skydns.test. 300 IN SRV 10 12 0 sub.server1."),
test.SRV("*.region1.skydns.test. 300 IN SRV 10 12 0 unresolvable.skydns.test."),
test.SRV("*.region1.skydns.test. 300 IN SRV 10 12 80 sub.server2."),
test.SRV("*.region1.skydns.test. 300 IN SRV 10 12 8080 a.server1.prod.region1.skydns.test."),
test.SRV("*.region1.skydns.test. 300 IN SRV 10 12 8080 b.server1.prod.region1.skydns.test."),
test.SRV("*.region1.skydns.test. 300 IN SRV 10 12 8080 b.server6.prod.region1.skydns.test."),
test.SRV("*.region1.skydns.test. 300 IN SRV 10 12 8080 c.sub.region1.skydns.test."),
test.SRV("*.region1.skydns.test. 300 IN SRV 10 12 8080 dev.server1."),
},
Extra: []dns.RR{
test.A("a.server1.prod.region1.skydns.test. 300 IN A 10.0.0.1"),
test.A("b.server1.prod.region1.skydns.test. 300 IN A 10.0.0.2"),
test.AAAA("b.server6.prod.region1.skydns.test. 300 IN AAAA ::1"),
test.A("c.sub.region1.skydns.test. 300 IN A 10.0.0.1"),
},
},
// Wildcard Test
{
Qname: "prod.*.skydns.test.", Qtype: dns.TypeSRV,
Answer: []dns.RR{
test.SRV("prod.*.skydns.test. 300 IN SRV 10 25 0 unresolvable.skydns.test."),
test.SRV("prod.*.skydns.test. 300 IN SRV 10 25 8080 a.server1.prod.region1.skydns.test."),
test.SRV("prod.*.skydns.test. 300 IN SRV 10 25 8080 b.server1.prod.region1.skydns.test."),
test.SRV("prod.*.skydns.test. 300 IN SRV 10 25 8080 b.server6.prod.region1.skydns.test."),
},
Extra: []dns.RR{
test.A("a.server1.prod.region1.skydns.test. 300 IN A 10.0.0.1"),
test.A("b.server1.prod.region1.skydns.test. 300 IN A 10.0.0.2"),
test.AAAA("b.server6.prod.region1.skydns.test. 300 IN AAAA ::1"),
},
},
// Wildcard Test
{
Qname: "prod.any.skydns.test.", Qtype: dns.TypeSRV,
Answer: []dns.RR{
test.SRV("prod.any.skydns.test. 300 IN SRV 10 25 0 unresolvable.skydns.test."),
test.SRV("prod.any.skydns.test. 300 IN SRV 10 25 8080 a.server1.prod.region1.skydns.test."),
test.SRV("prod.any.skydns.test. 300 IN SRV 10 25 8080 b.server1.prod.region1.skydns.test."),
test.SRV("prod.any.skydns.test. 300 IN SRV 10 25 8080 b.server6.prod.region1.skydns.test."),
},
Extra: []dns.RR{
test.A("a.server1.prod.region1.skydns.test. 300 IN A 10.0.0.1"),
test.A("b.server1.prod.region1.skydns.test. 300 IN A 10.0.0.2"),
test.AAAA("b.server6.prod.region1.skydns.test. 300 IN AAAA ::1"),
},
},
// CNAME loop detection
{
Qname: "a.cname.skydns.test.", Qtype: dns.TypeA,
Ns: []dns.RR{test.SOA("skydns.test. 300 SOA ns.dns.skydns.test. hostmaster.skydns.test. 1407441600 28800 7200 604800 60")},
},
// NODATA Test
{
Qname: "a.server1.dev.region1.skydns.test.", Qtype: dns.TypeTXT,
Ns: []dns.RR{test.SOA("skydns.test. 300 SOA ns.dns.skydns.test. hostmaster.skydns.test. 0 0 0 0 0")},
},
// NODATA Test
{
Qname: "a.server1.dev.region1.skydns.test.", Qtype: dns.TypeHINFO,
Ns: []dns.RR{test.SOA("skydns.test. 300 SOA ns.dns.skydns.test. hostmaster.skydns.test. 0 0 0 0 0")},
},
// NXDOMAIN Test
{
Qname: "a.server1.nonexistent.region1.skydns.test.", Qtype: dns.TypeHINFO, Rcode: dns.RcodeNameError,
Ns: []dns.RR{test.SOA("skydns.test. 300 SOA ns.dns.skydns.test. hostmaster.skydns.test. 0 0 0 0 0")},
},
{
Qname: "skydns.test.", Qtype: dns.TypeSOA,
Answer: []dns.RR{test.SOA("skydns.test. 300 IN SOA ns.dns.skydns.test. hostmaster.skydns.test. 1460498836 14400 3600 604800 60")},
},
// NS Record Test
{
Qname: "skydns.test.", Qtype: dns.TypeNS,
Answer: []dns.RR{
test.NS("skydns.test. 300 NS a.ns.dns.skydns.test."),
test.NS("skydns.test. 300 NS b.ns.dns.skydns.test."),
},
Extra: []dns.RR{
test.A("a.ns.dns.skydns.test. 300 A 10.0.0.2"),
test.A("b.ns.dns.skydns.test. 300 A 10.0.0.3"),
},
},
// NS Record Test
{
Qname: "a.skydns.test.", Qtype: dns.TypeNS, Rcode: dns.RcodeNameError,
Ns: []dns.RR{test.SOA("skydns.test. 300 IN SOA ns.dns.skydns.test. hostmaster.skydns.test. 1460498836 14400 3600 604800 60")},
},
// A Record For NS Record Test
{
Qname: "ns.dns.skydns.test.", Qtype: dns.TypeA,
Answer: []dns.RR{
test.A("ns.dns.skydns.test. 300 A 10.0.0.2"),
test.A("ns.dns.skydns.test. 300 A 10.0.0.3"),
},
},
{
Qname: "skydns_extra.test.", Qtype: dns.TypeSOA,
Answer: []dns.RR{test.SOA("skydns_extra.test. 300 IN SOA ns.dns.skydns_extra.test. hostmaster.skydns_extra.test. 1460498836 14400 3600 604800 60")},
},
// Reverse lookup
{
Qname: "1.0.0.10.in-addr.arpa.", Qtype: dns.TypePTR,
Answer: []dns.RR{test.PTR("1.0.0.10.in-addr.arpa. 300 PTR reverse.example.com.")},
},
}
func newEtcdMiddleware() *Etcd {
ctxt = context.TODO()
endpoints := []string{"http://localhost:2379"}
tlsc, _ := tls.NewTLSConfigFromArgs()
client, _ := newEtcdClient(endpoints, tlsc)
return &Etcd{
Proxy: proxy.NewLookup([]string{"8.8.8.8:53"}),
PathPrefix: "skydns",
Ctx: context.Background(),
Inflight: &singleflight.Group{},
Zones: []string{"skydns.test.", "skydns_extra.test.", "in-addr.arpa."},
Client: client,
}
}
func set(t *testing.T, e *Etcd, k string, ttl time.Duration, m *msg.Service) {
b, err := json.Marshal(m)
if err != nil {
t.Fatal(err)
}
path, _ := msg.PathWithWildcard(k, e.PathPrefix)
e.Client.Set(ctxt, path, string(b), &etcdc.SetOptions{TTL: ttl})
}
func delete(t *testing.T, e *Etcd, k string) {
path, _ := msg.PathWithWildcard(k, e.PathPrefix)
e.Client.Delete(ctxt, path, &etcdc.DeleteOptions{Recursive: false})
}
func TestLookup(t *testing.T) {
etc := newEtcdMiddleware()
for _, serv := range services {
set(t, etc, serv.Key, 0, serv)
defer delete(t, etc, serv.Key)
}
for _, tc := range dnsTestCases {
m := tc.Msg()
rec := dnsrecorder.New(&test.ResponseWriter{})
etc.ServeDNS(ctxt, rec, m)
resp := rec.Msg
test.SortAndCheck(t, resp, tc)
}
}
var ctxt context.Context
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