TrueCloudLab/coredns
16
0
Fork 2
Code Issues Pull requests 3 Projects Releases Packages Wiki Activity Actions
coredns/middleware/etcd/lookup_test.go
Miek Gieben a655a5735b Slowly adding all the tests from skydns
2016-03-23 22:59:05 +00:00

397 lines
13 KiB
Go
Raw Blame History

// +build net
package etcd
// etcd needs to be running on http://127.0.0.1:2379
// *and* needs connectivity to the internet for remotely resolving
// names.
import (
"encoding/json"
"sort"
"testing"
"time"
"github.com/miekg/coredns/middleware"
"github.com/miekg/coredns/middleware/etcd/msg"
"github.com/miekg/coredns/middleware/etcd/singleflight"
"github.com/miekg/coredns/middleware/proxy"
"github.com/miekg/dns"
etcdc "github.com/coreos/etcd/client"
"golang.org/x/net/context"
)
var (
etc Etcd
client etcdc.KeysAPI
ctx context.Context
)
type Section int
const (
Answer Section = iota
Ns
Extra
)
func init() {
ctx = context.TODO()
etcdCfg := etcdc.Config{
Endpoints: []string{"http://localhost:2379"},
}
cli, _ := etcdc.New(etcdCfg)
etc = Etcd{
Proxy: proxy.New([]string{"8.8.8.8:53"}),
PathPrefix: "skydns",
Ctx: context.Background(),
Inflight: &singleflight.Group{},
Zones: []string{"skydns.test."},
Client: etcdc.NewKeysAPI(cli),
}
}
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, _ := e.PathWithWildcard(k)
e.Client.Set(ctx, path, string(b), &etcdc.SetOptions{TTL: ttl})
}
func delete(t *testing.T, e Etcd, k string) {
path, _ := e.PathWithWildcard(k)
e.Client.Delete(ctx, path, &etcdc.DeleteOptions{Recursive: false})
}
type rrSet []dns.RR
func (p rrSet) Len() int { return len(p) }
func (p rrSet) Swap(i, j int) { p[i], p[j] = p[j], p[i] }
func (p rrSet) Less(i, j int) bool { return p[i].String() < p[j].String() }
func TestLookup(t *testing.T) {
for _, serv := range services {
set(t, etc, serv.Key, 0, serv)
defer delete(t, etc, serv.Key)
}
for _, tc := range dnsTestCases {
m := new(dns.Msg)
m.SetQuestion(dns.Fqdn(tc.Qname), tc.Qtype)
rec := middleware.NewResponseRecorder(&middleware.TestResponseWriter{})
_, err := etc.ServeDNS(ctx, rec, m)
if err != nil {
t.Errorf("expected no error, got %v\n", err)
return
}
resp := rec.Reply()
sort.Sort(rrSet(resp.Answer))
sort.Sort(rrSet(resp.Ns))
sort.Sort(rrSet(resp.Extra))
t.Logf("%v\n", resp)
if resp.Rcode != tc.Rcode {
t.Errorf("rcode is %q, expected %q", dns.RcodeToString[resp.Rcode], dns.RcodeToString[tc.Rcode])
continue
}
if len(resp.Answer) != len(tc.Answer) {
t.Errorf("answer for %q contained %d results, %d expected", tc.Qname, len(resp.Answer), len(tc.Answer))
continue
}
if len(resp.Ns) != len(tc.Ns) {
t.Errorf("authority for %q contained %d results, %d expected", tc.Qname, len(resp.Ns), len(tc.Ns))
continue
}
if len(resp.Extra) != len(tc.Extra) {
t.Errorf("additional for %q contained %d results, %d expected", tc.Qname, len(resp.Extra), len(tc.Extra))
continue
}
checkSection(t, tc, Answer, resp.Answer)
checkSection(t, tc, Ns, resp.Ns)
checkSection(t, tc, Extra, resp.Extra)
}
}
type dnsTestCase struct {
Qname string
Qtype uint16
Rcode int
Answer []dns.RR
Ns []dns.RR
Extra []dns.RR
}
// Note the key is encoded as DNS name, while in "reality" it is a etcd path.
var services = []*msg.Service{
{Host: "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."},
// CNAME dedup Test
{Host: "www.miek.nl", Key: "a.miek.nl.skydns.test."},
{Host: "www.miek.nl", Key: "b.miek.nl.skydns.test."},
// Unresolvable internal name
{Host: "unresolvable.skydns.test", Key: "cname.prod.region1.skydns.test."},
}
var dnsTestCases = []dnsTestCase{
// SRV Test
{
Qname: "a.server1.dev.region1.skydns.test.", Qtype: dns.TypeSRV,
Answer: []dns.RR{newSRV("a.server1.dev.region1.skydns.test. 300 SRV 10 100 8080 server1.")},
},
// A Test
{
Qname: "a.server1.prod.region1.skydns.test.", Qtype: dns.TypeA,
Answer: []dns.RR{newA("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{newSRV("a.server1.prod.region1.skydns.test. 300 SRV 10 100 8080 a.server1.prod.region1.skydns.test.")},
Extra: []dns.RR{newA("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{newAAAA("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{
newA("server1.prod.region1.skydns.test. 300 A 10.0.0.1"),
newA("server1.prod.region1.skydns.test. 300 A 10.0.0.2"),
},
},
// Multi SRV with the same target, should be dedupped.
{
Qname: "*.miek.nl.skydns.test.", Qtype: dns.TypeSRV,
Answer: []dns.RR{
newSRV("*.miek.nl.skydns.test. 300 IN SRV 10 100 0 www.miek.nl."),
},
// TODO(miek): bit stupid to rely on my home DNS setup for this...
Extra: []dns.RR{
// 303 ttl: don't care for the ttl on these RRs.
newA("a.miek.nl. 303 IN A 139.162.196.78"),
newAAAA("a.miek.nl. 303 IN AAAA 2a01:7e00::f03c:91ff:fef1:6735"),
newCNAME("www.miek.nl. 303 IN CNAME a.miek.nl."),
},
},
// CNAME (unresolvable internal name)
{
Qname: "cname.prod.region1.skydns.test.", Qtype: dns.TypeA,
Ns: []dns.RR{newSOA("skydns.test. 300 SOA ns.dns.skydns.test. hostmaster.skydns.test. 1407441600 28800 7200 604800 60")},
},
/*
// CNAME loop detection
{
Qname: "3.cname.skydns.test.", Qtype: dns.TypeA,
Answer: []dns.RR{},
Ns: []dns.RR{newSOA("skydns.test. 60 SOA ns.dns.skydns.test. hostmaster.skydns.test. 1407441600 28800 7200 604800 60")},
},
// CNAME (resolvable external name)
{
Qname: "external1.cname.skydns.test.", Qtype: dns.TypeA,
Answer: []dns.RR{
newA("a.miek.nl. 60 IN A 139.162.196.78"),
newCNAME("external1.cname.skydns.test. 60 IN CNAME www.miek.nl."),
newCNAME("www.miek.nl. 60 IN CNAME a.miek.nl."),
},
},
// CNAME (unresolvable external name)
{
Qname: "external2.cname.skydns.test.", Qtype: dns.TypeA,
Answer: []dns.RR{},
Ns: []dns.RR{newSOA("skydns.test. 60 SOA ns.dns.skydns.test. hostmaster.skydns.test. 1407441600 28800 7200 604800 60")},
},
// Priority Test
{
Qname: "region6.skydns.test.", Qtype: dns.TypeSRV,
Answer: []dns.RR{newSRV("region6.skydns.test. 300 SRV 333 100 80 server4.")},
},
// Subdomain Test
{
Qname: "region1.skydns.test.", Qtype: dns.TypeSRV,
Answer: []dns.RR{
newSRV("region1.skydns.test. 300 SRV 10 33 0 104.server1.dev.region1.skydns.test."),
newSRV("region1.skydns.test. 300 SRV 10 33 80 server2"),
newSRV("region1.skydns.test. 300 SRV 10 33 8080 server1.")},
Extra: []dns.RR{newA("104.server1.dev.region1.skydns.test. 300 A 10.0.0.1")},
},
// Subdomain Weight Test
{
Qname: "region5.skydns.test.", Qtype: dns.TypeSRV,
Answer: []dns.RR{
newSRV("region5.skydns.test. 300 SRV 10 22 0 server2."),
newSRV("region5.skydns.test. 300 SRV 10 36 0 server1."),
newSRV("region5.skydns.test. 300 SRV 10 41 0 server3."),
newSRV("region5.skydns.test. 300 SRV 30 100 0 server4.")},
},
// Wildcard Test
{
Qname: "*.region1.skydns.test.", Qtype: dns.TypeSRV,
Answer: []dns.RR{
newSRV("*.region1.skydns.test. 300 SRV 10 33 0 104.server1.dev.region1.skydns.test."),
newSRV("*.region1.skydns.test. 300 SRV 10 33 80 server2"),
newSRV("*.region1.skydns.test. 300 SRV 10 33 8080 server1.")},
Extra: []dns.RR{newA("104.server1.dev.region1.skydns.test. 300 A 10.0.0.1")},
},
// Wildcard Test
{
Qname: "prod.*.skydns.test.", Qtype: dns.TypeSRV,
Answer: []dns.RR{
newSRV("prod.*.skydns.test. 300 IN SRV 10 50 0 105.server3.prod.region2.skydns.test."),
newSRV("prod.*.skydns.test. 300 IN SRV 10 50 80 server2.")},
Extra: []dns.RR{newAAAA("105.server3.prod.region2.skydns.test. 300 IN AAAA 2001::8:8:8:8")},
},
// Wildcard Test
{
Qname: "prod.any.skydns.test.", Qtype: dns.TypeSRV,
Answer: []dns.RR{
newSRV("prod.any.skydns.test. 300 IN SRV 10 50 0 105.server3.prod.region2.skydns.test."),
newSRV("prod.any.skydns.test. 300 IN SRV 10 50 80 server2.")},
Extra: []dns.RR{newAAAA("105.server3.prod.region2.skydns.test. 300 IN AAAA 2001::8:8:8:8")},
},
// NXDOMAIN Test
{
Qname: "doesnotexist.skydns.test.", Qtype: dns.TypeA,
Rcode: dns.RcodeNameError,
Ns: []dns.RR{
newSOA("skydns.test. 300 SOA ns.dns.skydns.test. hostmaster.skydns.test. 0 0 0 0 0"),
},
},
// NODATA Test
{
Qname: "104.server1.dev.region1.skydns.test.", Qtype: dns.TypeTXT,
Ns: []dns.RR{newSOA("skydns.test. 300 SOA ns.dns.skydns.test. hostmaster.skydns.test. 0 0 0 0 0")},
},
// NODATA Test 2
{
Qname: "100.server1.dev.region1.skydns.test.", Qtype: dns.TypeA,
Rcode: dns.RcodeSuccess,
Ns: []dns.RR{newSOA("skydns.test. 300 SOA ns.dns.skydns.test. hostmaster.skydns.test. 0 0 0 0 0")},
},
{
// One has group, the other has not... Include the non-group always.
Qname: "dom2.skydns.test.", Qtype: dns.TypeA,
Answer: []dns.RR{
newA("dom2.skydns.test. IN A 127.0.0.1"),
newA("dom2.skydns.test. IN A 127.0.0.2"),
},
},
{
// The groups differ.
Qname: "dom1.skydns.test.", Qtype: dns.TypeA,
Answer: []dns.RR{
newA("dom1.skydns.test. IN A 127.0.0.1"),
},
},
*/
}
func newA(rr string) *dns.A { r, _ := dns.NewRR(rr); return r.(*dns.A) }
func newAAAA(rr string) *dns.AAAA { r, _ := dns.NewRR(rr); return r.(*dns.AAAA) }
func newCNAME(rr string) *dns.CNAME { r, _ := dns.NewRR(rr); return r.(*dns.CNAME) }
func newSRV(rr string) *dns.SRV { r, _ := dns.NewRR(rr); return r.(*dns.SRV) }
func newSOA(rr string) *dns.SOA { r, _ := dns.NewRR(rr); return r.(*dns.SOA) }
func newNS(rr string) *dns.NS { r, _ := dns.NewRR(rr); return r.(*dns.NS) }
func newPTR(rr string) *dns.PTR { r, _ := dns.NewRR(rr); return r.(*dns.PTR) }
func newTXT(rr string) *dns.TXT { r, _ := dns.NewRR(rr); return r.(*dns.TXT) }
func newMX(rr string) *dns.MX { r, _ := dns.NewRR(rr); return r.(*dns.MX) }
func checkSection(t *testing.T, tc dnsTestCase, sect Section, rr []dns.RR) {
section := []dns.RR{}
switch sect {
case 0:
section = tc.Answer
case 1:
section = tc.Ns
case 2:
section = tc.Extra
}
for i, a := range rr {
if a.Header().Name != section[i].Header().Name {
t.Errorf("answer %d should have a Header Name of %q, but has %q", i, section[i].Header().Name, a.Header().Name)
continue
}
// 303 signals: don't care what the ttl is.
if section[i].Header().Ttl != 303 && a.Header().Ttl != section[i].Header().Ttl {
t.Errorf("Answer %d should have a Header TTL of %d, but has %d", i, section[i].Header().Ttl, a.Header().Ttl)
continue
}
if a.Header().Rrtype != section[i].Header().Rrtype {
t.Errorf("answer %d should have a header rr type of %d, but has %d", i, section[i].Header().Rrtype, a.Header().Rrtype)
continue
}
switch x := a.(type) {
case *dns.SRV:
if x.Priority != section[i].(*dns.SRV).Priority {
t.Errorf("answer %d should have a Priority of %d, but has %d", i, section[i].(*dns.SRV).Priority, x.Priority)
}
if x.Weight != section[i].(*dns.SRV).Weight {
t.Errorf("answer %d should have a Weight of %d, but has %d", i, section[i].(*dns.SRV).Weight, x.Weight)
}
if x.Port != section[i].(*dns.SRV).Port {
t.Errorf("answer %d should have a Port of %d, but has %d", i, section[i].(*dns.SRV).Port, x.Port)
}
if x.Target != section[i].(*dns.SRV).Target {
t.Errorf("answer %d should have a Target of %q, but has %q", i, section[i].(*dns.SRV).Target, x.Target)
}
case *dns.A:
if x.A.String() != section[i].(*dns.A).A.String() {
t.Errorf("answer %d should have a Address of %q, but has %q", i, section[i].(*dns.A).A.String(), x.A.String())
}
case *dns.AAAA:
if x.AAAA.String() != section[i].(*dns.AAAA).AAAA.String() {
t.Errorf("answer %d should have a Address of %q, but has %q", i, section[i].(*dns.AAAA).AAAA.String(), x.AAAA.String())
}
case *dns.TXT:
for j, txt := range x.Txt {
if txt != section[i].(*dns.TXT).Txt[j] {
t.Errorf("answer %d should have a Txt of %q, but has %q", i, section[i].(*dns.TXT).Txt[j], txt)
}
}
case *dns.SOA:
tt := section[i].(*dns.SOA)
if x.Ns != tt.Ns {
t.Errorf("SOA nameserver should be %q, but is %q", x.Ns, tt.Ns)
}
case *dns.PTR:
tt := section[i].(*dns.PTR)
if x.Ptr != tt.Ptr {
t.Errorf("PTR ptr should be %q, but is %q", x.Ptr, tt.Ptr)
}
case *dns.CNAME:
tt := section[i].(*dns.CNAME)
if x.Target != tt.Target {
t.Errorf("CNAME target should be %q, but is %q", x.Target, tt.Target)
}
case *dns.MX:
tt := section[i].(*dns.MX)
if x.Mx != tt.Mx {
t.Errorf("MX Mx should be %q, but is %q", x.Mx, tt.Mx)
}
if x.Preference != tt.Preference {
t.Errorf("MX Preference should be %q, but is %q", x.Preference, tt.Preference)
}
case *dns.NS:
tt := section[i].(*dns.NS)
if x.Ns != tt.Ns {
t.Errorf("NS nameserver should be %q, but is %q", x.Ns, tt.Ns)
}
}
}
}
Reference in a new issue View git blame Copy permalink