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package kubernetes
import (
"context"
"testing"
"github.com/coredns/coredns/plugin/etcd/msg"
"github.com/coredns/coredns/plugin/kubernetes/object"
"github.com/coredns/coredns/plugin/test"
"github.com/coredns/coredns/request"
"github.com/miekg/dns"
api "k8s.io/api/core/v1"
)
var extCases = []struct {
Qname string
Qtype uint16
Msg []msg.Service
Rcode int
}{
{
Qname: "svc1.testns.example.org.", Rcode: dns.RcodeSuccess,
Msg: []msg.Service{
{Host: "1.2.3.4", Port: 80, TTL: 5, Key: "/c/org/example/testns/svc1"},
},
},
{
Qname: "svc6.testns.example.org.", Rcode: dns.RcodeSuccess,
Msg: []msg.Service{
{Host: "1:2::5", Port: 80, TTL: 5, Key: "/c/org/example/testns/svc6"},
},
},
{
Qname: "_http._tcp.svc1.testns.example.com.", Rcode: dns.RcodeSuccess,
Msg: []msg.Service{
{Host: "1.2.3.4", Port: 80, TTL: 5, Key: "/c/org/example/testns/svc1"},
},
},
{
Qname: "svc0.testns.example.com.", Rcode: dns.RcodeNameError,
},
{
Qname: "svc0.svc-nons.example.com.", Rcode: dns.RcodeNameError,
},
{
Qname: "svc-headless.testns.example.com.", Rcode: dns.RcodeSuccess,
Msg: []msg.Service{
{Host: "1.2.3.4", Port: 80, TTL: 5, Weight: 50, Key: "/c/org/example/testns/svc-headless/endpoint-svc-0"},
{Host: "1.2.3.5", Port: 80, TTL: 5, Weight: 50, Key: "/c/org/example/testns/svc-headless/endpoint-svc-1"},
},
},
{
Qname: "endpoint-svc-0.svc-headless.testns.example.com.", Rcode: dns.RcodeSuccess,
Msg: []msg.Service{
{Host: "1.2.3.4", Port: 80, TTL: 5, Weight: 100, Key: "/c/org/example/testns/svc-headless/endpoint-svc-0"},
},
},
{
Qname: "endpoint-1.svc-nons.testns.example.com.", Rcode: dns.RcodeNameError,
},
}
func TestExternal(t *testing.T) {
k := New([]string{"cluster.local."})
k.APIConn = &external{}
k.Next = test.NextHandler(dns.RcodeSuccess, nil)
k.Namespaces = map[string]struct{}{"testns": {}}
for i, tc := range extCases {
state := testRequest(tc.Qname)
svc, rcode := k.External(state, true)
if x := tc.Rcode; x != rcode {
t.Errorf("Test %d, expected rcode %d, got %d", i, x, rcode)
}
if len(svc) != len(tc.Msg) {
t.Errorf("Test %d, expected %d for messages, got %d", i, len(tc.Msg), len(svc))
}
for j, s := range svc {
if x := tc.Msg[j].Key; x != s.Key {
t.Errorf("Test %d, expected key %s, got %s", i, x, s.Key)
}
}
}
}
type external struct{}
func (external) HasSynced() bool { return true }
func (external) Run() {}
func (external) Stop() error { return nil }
func (external) EpIndexReverse(string) []*object.Endpoints { return nil }
func (external) SvcIndexReverse(string) []*object.Service { return nil }
func (external) SvcExtIndexReverse(string) []*object.Service { return nil }
func (external) Modified(bool) int64 { return 0 }
func (external) EpIndex(s string) []*object.Endpoints {
return epIndexExternal[s]
}
func (external) EndpointsList() []*object.Endpoints {
var eps []*object.Endpoints
for _, ep := range epIndexExternal {
eps = append(eps, ep...)
}
return eps
}
func (external) GetNodeByName(ctx context.Context, name string) (*api.Node, error) { return nil, nil }
func (external) SvcIndex(s string) []*object.Service { return svcIndexExternal[s] }
func (external) PodIndex(string) []*object.Pod { return nil }
func (external) GetNamespaceByName(name string) (*object.Namespace, error) {
return &object.Namespace{
Name: name,
}, nil
}
var epIndexExternal = map[string][]*object.Endpoints{
"svc-headless.testns": {
{
Name: "svc-headless",
Namespace: "testns",
Index: "svc-headless.testns",
Subsets: []object.EndpointSubset{
{
Ports: []object.EndpointPort{
{
Port: 80,
Name: "http",
Protocol: "TCP",
},
},
Addresses: []object.EndpointAddress{
{
IP: "1.2.3.4",
Hostname: "endpoint-svc-0",
NodeName: "test-node",
TargetRefName: "endpoint-svc-0",
},
{
IP: "1.2.3.5",
Hostname: "endpoint-svc-1",
NodeName: "test-node",
TargetRefName: "endpoint-svc-1",
},
},
},
},
},
},
}
var svcIndexExternal = map[string][]*object.Service{
"svc1.testns": {
{
Name: "svc1",
Namespace: "testns",
Type: api.ServiceTypeClusterIP,
ClusterIPs: []string{"10.0.0.1"},
ExternalIPs: []string{"1.2.3.4"},
Ports: []api.ServicePort{{Name: "http", Protocol: "tcp", Port: 80}},
},
},
"svc6.testns": {
{
Name: "svc6",
Namespace: "testns",
Type: api.ServiceTypeClusterIP,
ClusterIPs: []string{"10.0.0.3"},
ExternalIPs: []string{"1:2::5"},
Ports: []api.ServicePort{{Name: "http", Protocol: "tcp", Port: 80}},
},
},
"svc-headless.testns": {
{
Name: "svc-headless",
Namespace: "testns",
Type: api.ServiceTypeClusterIP,
ClusterIPs: []string{api.ClusterIPNone},
Ports: []api.ServicePort{{Name: "http", Protocol: "tcp", Port: 80}},
},
},
}
func (external) ServiceList() []*object.Service {
var svcs []*object.Service
for _, svc := range svcIndexExternal {
svcs = append(svcs, svc...)
}
return svcs
}
func testRequest(name string) request.Request {
m := new(dns.Msg).SetQuestion(name, dns.TypeA)
return request.Request{W: &test.ResponseWriter{}, Req: m, Zone: "example.org."}
}
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