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// +build etcd
package test
import (
"encoding/json"
"io/ioutil"
"log"
"testing"
"time"
"github.com/miekg/coredns/middleware/etcd"
"github.com/miekg/coredns/middleware/etcd/msg"
"github.com/miekg/coredns/middleware/proxy"
"github.com/miekg/coredns/middleware/test"
"github.com/miekg/coredns/request"
etcdc "github.com/coreos/etcd/client"
"github.com/miekg/dns"
"golang.org/x/net/context"
)
func etcdMiddleware() *etcd.Etcd {
etcdCfg := etcdc.Config{
Endpoints: []string{"http://localhost:2379"},
}
cli, _ := etcdc.New(etcdCfg)
client := etcdc.NewKeysAPI(cli)
return &etcd.Etcd{Client: client}
}
// This test starts two coredns servers (and needs etcd). Configure a stubzones in both (that will loop) and
// will then test if we detect this loop.
func TestEtcdStubForwarding(t *testing.T) {
// TODO(miek)
}
func TestEtcdStubAndProxyLookup(t *testing.T) {
corefile := `.:0 {
etcd skydns.local {
stubzones
path /skydns
endpoint http://localhost:2379
upstream 8.8.8.8:53 8.8.4.4:53
}
proxy . 8.8.8.8:53
}`
ex, err := CoreDNSServer(corefile)
if err != nil {
t.Fatalf("could not get CoreDNS serving instance: %s", err)
}
udp, _ := CoreDNSServerPorts(ex, 0)
if udp == "" {
t.Fatalf("could not get udp listening port")
}
defer ex.Stop()
etc := etcdMiddleware()
log.SetOutput(ioutil.Discard)
var ctx = context.TODO()
for _, serv := range servicesStub { // adds example.{net,org} as stubs
set(ctx, t, etc, serv.Key, 0, serv)
defer delete(ctx, t, etc, serv.Key)
}
p := proxy.New([]string{udp}) // use udp port from the server
state := request.Request{W: &test.ResponseWriter{}, Req: new(dns.Msg)}
resp, err := p.Lookup(state, "example.com.", dns.TypeA)
if err != nil {
t.Error("Expected to receive reply, but didn't")
return
}
if len(resp.Answer) == 0 {
t.Error("Expected to at least one RR in the answer section, got none")
}
if resp.Answer[0].Header().Rrtype != dns.TypeA {
t.Errorf("Expected RR to A, got: %d", resp.Answer[0].Header().Rrtype)
}
if resp.Answer[0].(*dns.A).A.String() != "93.184.216.34" {
t.Errorf("Expected 93.184.216.34, got: %d", resp.Answer[0].(*dns.A).A.String())
}
}
var servicesStub = []*msg.Service{
// Two tests, ask a question that should return servfail because remote it no accessible
// and one with edns0 option added, that should return refused.
{Host: "127.0.0.1", Port: 666, Key: "b.example.org.stub.dns.skydns.test."},
// Actual test that goes out to the internet.
{Host: "199.43.132.53", Key: "a.example.net.stub.dns.skydns.test."},
}
// Copied from middleware/etcd/setup_test.go
func set(ctx context.Context, t *testing.T, e *etcd.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(ctx, path, string(b), &etcdc.SetOptions{TTL: ttl})
}
// Copied from middleware/etcd/setup_test.go
func delete(ctx context.Context, t *testing.T, e *etcd.Etcd, k string) {
path, _ := msg.PathWithWildcard(k, e.PathPrefix)
e.Client.Delete(ctx, path, &etcdc.DeleteOptions{Recursive: false})
}
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