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plugin/k8s: Use service IP index in reverse lookups (#1212)

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* use index for svc reverse lookup

* temp revert

* restore reverse.go

* restore reverse_test.go
This commit is contained in:
Chris O'Haver 2017-11-10 11:59:21 -05:00 • committed by Miek Gieben
parent beef212fbe
commit a78f46fb28
2 changed files with 27 additions and 16 deletions
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8
plugin/kubernetes/reverse.go
View file

@ -25,14 +25,12 @@ func (k *Kubernetes) Reverse(state request.Request, exact bool, opt plugin.Optio
// If a service cluster ip does not match, it checks all endpoints
func (k *Kubernetes) serviceRecordForIP(ip, name string) []msg.Service {
// First check services with cluster ips
for _, service := range k.APIConn.ServiceList() {
for _, service := range k.APIConn.SvcIndexReverse(ip) {
if (len(k.Namespaces) > 0) && !k.namespaceExposed(service.Namespace) {
continue
}
if service.Spec.ClusterIP == ip {
domain := strings.Join([]string{service.Name, service.Namespace, Svc, k.primaryZone()}, ".")
return []msg.Service{{Host: domain}}
}
domain := strings.Join([]string{service.Name, service.Namespace, Svc, k.primaryZone()}, ".")
return []msg.Service{{Host: domain}}
}
// If no cluster ips match, search endpoints
for _, ep := range k.APIConn.EpIndexReverse(ip) {

35
plugin/kubernetes/reverse_test.go
View file

@ -14,16 +14,19 @@ import (
type APIConnReverseTest struct{}
func (APIConnReverseTest) HasSynced() bool { return true }
func (APIConnReverseTest) Run() { return }
func (APIConnReverseTest) Stop() error { return nil }
func (APIConnReverseTest) PodIndex(string) []*api.Pod { return nil }
func (APIConnReverseTest) SvcIndex(string) []*api.Service { return nil }
func (APIConnReverseTest) SvcIndexReverse(string) []*api.Service { return nil }
func (APIConnReverseTest) EpIndex(string) []*api.Endpoints { return nil }
func (APIConnReverseTest) EndpointsList() []*api.Endpoints { return nil }
func (APIConnReverseTest) HasSynced() bool { return true }
func (APIConnReverseTest) Run() { return }
func (APIConnReverseTest) Stop() error { return nil }
func (APIConnReverseTest) PodIndex(string) []*api.Pod { return nil }
func (APIConnReverseTest) SvcIndex(string) []*api.Service { return nil }
func (APIConnReverseTest) EpIndex(string) []*api.Endpoints { return nil }
func (APIConnReverseTest) EndpointsList() []*api.Endpoints { return nil }
func (APIConnReverseTest) ServiceList() []*api.Service { return nil }
func (APIConnReverseTest) ServiceList() []*api.Service {
func (APIConnReverseTest) SvcIndexReverse(ip string) []*api.Service {
if ip != "192.168.1.100" {
return nil
}
svcs := []*api.Service{
{
ObjectMeta: meta.ObjectMeta{
@ -43,7 +46,10 @@ func (APIConnReverseTest) ServiceList() []*api.Service {
return svcs
}
func (APIConnReverseTest) EpIndexReverse(string) []*api.Endpoints {
func (APIConnReverseTest) EpIndexReverse(ip string) []*api.Endpoints {
if ip != "10.0.0.100" {
return nil
}
eps := []*api.Endpoints{
{
Subsets: []api.EndpointSubset{
@ -82,7 +88,7 @@ func (APIConnReverseTest) GetNodeByName(name string) (*api.Node, error) {
func TestReverse(t *testing.T) {
k := New([]string{"cluster.local.", "0.10.in-addr.arpa."})
k := New([]string{"cluster.local.", "0.10.in-addr.arpa.", "168.192.in-addr.arpa."})
k.APIConn = &APIConnReverseTest{}
tests := []test.Case{
@ -93,6 +99,13 @@ func TestReverse(t *testing.T) {
test.PTR("100.0.0.10.in-addr.arpa. 303 IN PTR ep1a.svc1.testns.svc.cluster.local."),
},
},
{
Qname: "100.1.168.192.in-addr.arpa.", Qtype: dns.TypePTR,
Rcode: dns.RcodeSuccess,
Answer: []dns.RR{
test.PTR("100.1.168.192.in-addr.arpa. 303 IN PTR svc1.testns.svc.cluster.local."),
},
},
{
Qname: "101.0.0.10.in-addr.arpa.", Qtype: dns.TypePTR,
Rcode: dns.RcodeSuccess,