TrueCloudLab/coredns
16
0
Fork 2
Code Issues Pull requests 1 Projects Releases Packages Wiki Activity Actions

Bugfix: bx in etcd.go didn't get Key

Browse source 
Thus record only diffing in the Key were seen as identical and not
included in the end results. Of course this being a map when and if
this would happen was rather random.

Fixed by including Key. Further small tweaks and code refactors.
This commit is contained in:
Miek Gieben 2016-03-25 15:30:44 +00:00
parent e408c81a8c
commit e62eb2cde0
4 changed files with 38 additions and 34 deletions
Download patch file Download diff file Expand all files Collapse all files

2
middleware/etcd/etcd.go
View file

@ -103,7 +103,7 @@ Nodes:
if err := json.Unmarshal([]byte(n.Value), serv); err != nil {
return nil, err
}
b := msg.Service{Host: serv.Host, Port: serv.Port, Priority: serv.Priority, Weight: serv.Weight, Text: serv.Text}
b := msg.Service{Host: serv.Host, Port: serv.Port, Priority: serv.Priority, Weight: serv.Weight, Text: serv.Text, Key: n.Key}
if _, ok := bx[b]; ok {
continue
}

31
middleware/etcd/lookup.go
View file

@ -10,13 +10,20 @@ import (
"github.com/miekg/dns"
)
func (e Etcd) A(zone string, state middleware.State, previousRecords []dns.RR) (records []dns.RR, err error) {
services, err := e.Records(state.Name(), false)
func (e Etcd) records(state middleware.State, exact bool) ([]msg.Service, error) {
services, err := e.Records(state.Name(), exact)
if err != nil {
return nil, err
}
services = msg.Group(services)
return services, nil
}
func (e Etcd) A(zone string, state middleware.State, previousRecords []dns.RR) (records []dns.RR, err error) {
services, err := e.records(state, false)
if err != nil {
return nil, err
}
for _, serv := range services {
ip := net.ParseIP(serv.Host)
@ -73,13 +80,11 @@ func (e Etcd) A(zone string, state middleware.State, previousRecords []dns.RR) (
}
func (e Etcd) AAAA(zone string, state middleware.State, previousRecords []dns.RR) (records []dns.RR, err error) {
services, err := e.Records(state.Name(), false)
services, err := e.records(state, false)
if err != nil {
return nil, err
}
services = msg.Group(services)
for _, serv := range services {
ip := net.ParseIP(serv.Host)
switch {
@ -139,13 +144,11 @@ func (e Etcd) AAAA(zone string, state middleware.State, previousRecords []dns.RR
// SRV returns SRV records from etcd.
// If the Target is not a name but an IP address, a name is created on the fly.
func (e Etcd) SRV(zone string, state middleware.State) (records []dns.RR, extra []dns.RR, err error) {
services, err := e.Records(state.Name(), false)
services, err := e.records(state, false)
if err != nil {
return nil, nil, err
}
services = msg.Group(services)
// Looping twice to get the right weight vs priority
w := make(map[int]int)
for _, serv := range services {
@ -224,7 +227,7 @@ func (e Etcd) SRV(zone string, state middleware.State) (records []dns.RR, extra
// MX returns MX records from etcd.
// If the Target is not a name but an IP address, a name is created on the fly.
func (e Etcd) MX(zone string, state middleware.State) (records []dns.RR, extra []dns.RR, err error) {
services, err := e.Records(state.Name(), false)
services, err := e.records(state, false)
if err != nil {
return nil, nil, err
}
@ -282,13 +285,11 @@ func (e Etcd) MX(zone string, state middleware.State) (records []dns.RR, extra [
}
func (e Etcd) CNAME(zone string, state middleware.State) (records []dns.RR, err error) {
services, err := e.Records(state.Name(), true)
services, err := e.records(state, true)
if err != nil {
return nil, err
}
services = msg.Group(services)
if len(services) > 0 {
serv := services[0]
if ip := net.ParseIP(serv.Host); ip == nil {
@ -299,13 +300,11 @@ func (e Etcd) CNAME(zone string, state middleware.State) (records []dns.RR, err
}
func (e Etcd) TXT(zone string, state middleware.State) (records []dns.RR, err error) {
services, err := e.Records(state.Name(), false)
services, err := e.records(state, false)
if err != nil {
return nil, err
}
services = msg.Group(services)
for _, serv := range services {
if serv.Text == "" {
continue

16
middleware/etcd/lookup_test.go
View file

@ -97,18 +97,20 @@ var dnsTestCases = []dnsTestCase{
{
Qname: "*.region1.skydns.test.", Qtype: dns.TypeSRV,
Answer: []dns.RR{
newSRV("*.region1.skydns.test. 300 IN SRV 10 14 0 sub.server1."),
newSRV("*.region1.skydns.test. 300 IN SRV 10 14 0 unresolvable.skydns.test."),
newSRV("*.region1.skydns.test. 300 IN SRV 10 14 80 sub.server2."),
newSRV("*.region1.skydns.test. 300 IN SRV 10 14 8080 a.server1.prod.region1.skydns.test."),
newSRV("*.region1.skydns.test. 300 IN SRV 10 14 8080 b.server1.prod.region1.skydns.test."),
newSRV("*.region1.skydns.test. 300 IN SRV 10 14 8080 b.server6.prod.region1.skydns.test."),
newSRV("*.region1.skydns.test. 300 IN SRV 10 14 8080 dev.server1."),
newSRV("*.region1.skydns.test. 300 IN SRV 10 12 0 sub.server1."),
newSRV("*.region1.skydns.test. 300 IN SRV 10 12 0 unresolvable.skydns.test."),
newSRV("*.region1.skydns.test. 300 IN SRV 10 12 80 sub.server2."),
newSRV("*.region1.skydns.test. 300 IN SRV 10 12 8080 a.server1.prod.region1.skydns.test."),
newSRV("*.region1.skydns.test. 300 IN SRV 10 12 8080 b.server1.prod.region1.skydns.test."),
newSRV("*.region1.skydns.test. 300 IN SRV 10 12 8080 b.server6.prod.region1.skydns.test."),
newSRV("*.region1.skydns.test. 300 IN SRV 10 12 8080 c.sub.region1.skydns.test."),
newSRV("*.region1.skydns.test. 300 IN SRV 10 12 8080 dev.server1."),
},
Extra: []dns.RR{
newA("a.server1.prod.region1.skydns.test. 300 IN A 10.0.0.1"),
newA("b.server1.prod.region1.skydns.test. 300 IN A 10.0.0.2"),
newAAAA("b.server6.prod.region1.skydns.test. 300 IN AAAA ::1"),
newA("c.sub.region1.skydns.test. 300 IN A 10.0.0.1"),
},
},
// Wildcard Test

23
middleware/etcd/setup_test.go
View file

@ -118,13 +118,16 @@ func TestLookup(t *testing.T) {
if !checkSection(t, tc, Answer, resp.Answer) {
t.Logf("%v\n", resp)
t.Fatal()
}
if !checkSection(t, tc, Ns, resp.Ns) {
t.Logf("%v\n", resp)
t.Fatal()
}
if !checkSection(t, tc, Extra, resp.Extra) {
t.Logf("%v\n", resp)
t.Fatal()
}
}
}
@ -161,51 +164,51 @@ func checkSection(t *testing.T, tc dnsTestCase, sect Section, rr []dns.RR) bool
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)
t.Errorf("rr %d should have a Header Name of %q, but has %q", i, section[i].Header().Name, a.Header().Name)
return false
}
// 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)
t.Errorf("rr %d should have a Header TTL of %d, but has %d", i, section[i].Header().Ttl, a.Header().Ttl)
return false
}
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)
t.Errorf("rr %d should have a header rr type of %d, but has %d", i, section[i].Header().Rrtype, a.Header().Rrtype)
return false
}
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)
t.Errorf("rr %d should have a Priority of %d, but has %d", i, section[i].(*dns.SRV).Priority, x.Priority)
return false
}
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)
t.Errorf("rr %d should have a Weight of %d, but has %d", i, section[i].(*dns.SRV).Weight, x.Weight)
return false
}
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)
t.Errorf("rr %d should have a Port of %d, but has %d", i, section[i].(*dns.SRV).Port, x.Port)
return false
}
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)
t.Errorf("rr %d should have a Target of %q, but has %q", i, section[i].(*dns.SRV).Target, x.Target)
return false
}
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())
t.Errorf("rr %d should have a Address of %q, but has %q", i, section[i].(*dns.A).A.String(), x.A.String())
return false
}
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())
t.Errorf("rr %d should have a Address of %q, but has %q", i, section[i].(*dns.AAAA).AAAA.String(), x.AAAA.String())
return false
}
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)
t.Errorf("rr %d should have a Txt of %q, but has %q", i, section[i].(*dns.TXT).Txt[j], txt)
return false
}
}