303 lines
6.1 KiB
Go
303 lines
6.1 KiB
Go
package agent
|
|
|
|
import (
|
|
"github.com/hashicorp/consul/consul/structs"
|
|
"github.com/miekg/dns"
|
|
"os"
|
|
"testing"
|
|
"time"
|
|
)
|
|
|
|
func makeDNSServer(t *testing.T) (string, *DNSServer) {
|
|
conf := nextConfig()
|
|
dir, agent := makeAgent(t, conf)
|
|
server, err := NewDNSServer(agent, agent.logOutput, conf.Domain,
|
|
conf.DNSAddr, "8.8.8.8:53")
|
|
if err != nil {
|
|
t.Fatalf("err: %v", err)
|
|
}
|
|
return dir, server
|
|
}
|
|
|
|
func TestDNS_IsAlive(t *testing.T) {
|
|
dir, srv := makeDNSServer(t)
|
|
defer os.RemoveAll(dir)
|
|
defer srv.agent.Shutdown()
|
|
|
|
m := new(dns.Msg)
|
|
m.SetQuestion("_test.consul.", dns.TypeANY)
|
|
|
|
c := new(dns.Client)
|
|
in, _, err := c.Exchange(m, srv.agent.config.DNSAddr)
|
|
if err != nil {
|
|
t.Fatalf("err: %v", err)
|
|
}
|
|
|
|
if len(in.Answer) != 1 {
|
|
t.Fatalf("Bad: %#v", in)
|
|
}
|
|
|
|
txt, ok := in.Answer[0].(*dns.TXT)
|
|
if !ok {
|
|
t.Fatalf("Bad: %#v", in.Answer[0])
|
|
}
|
|
if txt.Txt[0] != "ok" {
|
|
t.Fatalf("Bad: %#v", in.Answer[0])
|
|
}
|
|
}
|
|
|
|
func TestDNS_NodeLookup(t *testing.T) {
|
|
dir, srv := makeDNSServer(t)
|
|
defer os.RemoveAll(dir)
|
|
defer srv.agent.Shutdown()
|
|
|
|
// Wait for leader
|
|
time.Sleep(100 * time.Millisecond)
|
|
|
|
// Register node
|
|
args := &structs.RegisterRequest{
|
|
Datacenter: "dc1",
|
|
Node: "foo",
|
|
Address: "127.0.0.1",
|
|
}
|
|
var out struct{}
|
|
if err := srv.agent.RPC("Catalog.Register", args, &out); err != nil {
|
|
t.Fatalf("err: %v", err)
|
|
}
|
|
|
|
m := new(dns.Msg)
|
|
m.SetQuestion("foo.node.consul.", dns.TypeANY)
|
|
|
|
c := new(dns.Client)
|
|
in, _, err := c.Exchange(m, srv.agent.config.DNSAddr)
|
|
if err != nil {
|
|
t.Fatalf("err: %v", err)
|
|
}
|
|
|
|
if len(in.Answer) != 1 {
|
|
t.Fatalf("Bad: %#v", in)
|
|
}
|
|
|
|
aRec, ok := in.Answer[0].(*dns.A)
|
|
if !ok {
|
|
t.Fatalf("Bad: %#v", in.Answer[0])
|
|
}
|
|
if aRec.A.String() != "127.0.0.1" {
|
|
t.Fatalf("Bad: %#v", in.Answer[0])
|
|
}
|
|
|
|
// Re-do the query, but specify the DC
|
|
m = new(dns.Msg)
|
|
m.SetQuestion("foo.node.dc1.consul.", dns.TypeANY)
|
|
|
|
c = new(dns.Client)
|
|
in, _, err = c.Exchange(m, srv.agent.config.DNSAddr)
|
|
if err != nil {
|
|
t.Fatalf("err: %v", err)
|
|
}
|
|
|
|
if len(in.Answer) != 1 {
|
|
t.Fatalf("Bad: %#v", in)
|
|
}
|
|
|
|
aRec, ok = in.Answer[0].(*dns.A)
|
|
if !ok {
|
|
t.Fatalf("Bad: %#v", in.Answer[0])
|
|
}
|
|
if aRec.A.String() != "127.0.0.1" {
|
|
t.Fatalf("Bad: %#v", in.Answer[0])
|
|
}
|
|
}
|
|
|
|
func TestDNS_ServiceLookup(t *testing.T) {
|
|
dir, srv := makeDNSServer(t)
|
|
defer os.RemoveAll(dir)
|
|
defer srv.agent.Shutdown()
|
|
|
|
// Wait for leader
|
|
time.Sleep(100 * time.Millisecond)
|
|
|
|
// Register node
|
|
args := &structs.RegisterRequest{
|
|
Datacenter: "dc1",
|
|
Node: "foo",
|
|
Address: "127.0.0.1",
|
|
ServiceName: "db",
|
|
ServiceTag: "master",
|
|
ServicePort: 12345,
|
|
}
|
|
var out struct{}
|
|
if err := srv.agent.RPC("Catalog.Register", args, &out); err != nil {
|
|
t.Fatalf("err: %v", err)
|
|
}
|
|
|
|
m := new(dns.Msg)
|
|
m.SetQuestion("db.service.consul.", dns.TypeANY)
|
|
|
|
c := new(dns.Client)
|
|
in, _, err := c.Exchange(m, srv.agent.config.DNSAddr)
|
|
if err != nil {
|
|
t.Fatalf("err: %v", err)
|
|
}
|
|
|
|
if len(in.Answer) != 2 {
|
|
t.Fatalf("Bad: %#v", in)
|
|
}
|
|
|
|
aRec, ok := in.Answer[0].(*dns.A)
|
|
if !ok {
|
|
t.Fatalf("Bad: %#v", in.Answer[0])
|
|
}
|
|
if aRec.A.String() != "127.0.0.1" {
|
|
t.Fatalf("Bad: %#v", in.Answer[0])
|
|
}
|
|
|
|
srvRec, ok := in.Answer[1].(*dns.SRV)
|
|
if !ok {
|
|
t.Fatalf("Bad: %#v", in.Answer[1])
|
|
}
|
|
if srvRec.Port != 12345 {
|
|
t.Fatalf("Bad: %#v", srvRec)
|
|
}
|
|
if srvRec.Target != "foo.node.dc1.consul." {
|
|
t.Fatalf("Bad: %#v", srvRec)
|
|
}
|
|
|
|
aRec, ok = in.Extra[0].(*dns.A)
|
|
if !ok {
|
|
t.Fatalf("Bad: %#v", in.Extra[0])
|
|
}
|
|
if aRec.Hdr.Name != "foo.node.dc1.consul." {
|
|
t.Fatalf("Bad: %#v", in.Extra[0])
|
|
}
|
|
if aRec.A.String() != "127.0.0.1" {
|
|
t.Fatalf("Bad: %#v", in.Extra[0])
|
|
}
|
|
}
|
|
|
|
func TestDNS_ServiceLookup_Dedup(t *testing.T) {
|
|
dir, srv := makeDNSServer(t)
|
|
defer os.RemoveAll(dir)
|
|
defer srv.agent.Shutdown()
|
|
|
|
// Wait for leader
|
|
time.Sleep(100 * time.Millisecond)
|
|
|
|
// Register node
|
|
args := &structs.RegisterRequest{
|
|
Datacenter: "dc1",
|
|
Node: "foo",
|
|
Address: "127.0.0.1",
|
|
ServiceName: "db",
|
|
ServiceTag: "master",
|
|
ServicePort: 12345,
|
|
}
|
|
var out struct{}
|
|
if err := srv.agent.RPC("Catalog.Register", args, &out); err != nil {
|
|
t.Fatalf("err: %v", err)
|
|
}
|
|
|
|
args = &structs.RegisterRequest{
|
|
Datacenter: "dc1",
|
|
Node: "foo",
|
|
Address: "127.0.0.1",
|
|
ServiceID: "db2",
|
|
ServiceName: "db",
|
|
ServiceTag: "slave",
|
|
ServicePort: 12345,
|
|
}
|
|
if err := srv.agent.RPC("Catalog.Register", args, &out); err != nil {
|
|
t.Fatalf("err: %v", err)
|
|
}
|
|
|
|
args = &structs.RegisterRequest{
|
|
Datacenter: "dc1",
|
|
Node: "foo",
|
|
Address: "127.0.0.1",
|
|
ServiceID: "db3",
|
|
ServiceName: "db",
|
|
ServiceTag: "slave",
|
|
ServicePort: 12346,
|
|
}
|
|
if err := srv.agent.RPC("Catalog.Register", args, &out); err != nil {
|
|
t.Fatalf("err: %v", err)
|
|
}
|
|
|
|
m := new(dns.Msg)
|
|
m.SetQuestion("db.service.consul.", dns.TypeANY)
|
|
|
|
c := new(dns.Client)
|
|
in, _, err := c.Exchange(m, srv.agent.config.DNSAddr)
|
|
if err != nil {
|
|
t.Fatalf("err: %v", err)
|
|
}
|
|
|
|
if len(in.Answer) != 3 {
|
|
t.Fatalf("Bad: %#v", in)
|
|
}
|
|
|
|
aRec, ok := in.Answer[0].(*dns.A)
|
|
if !ok {
|
|
t.Fatalf("Bad: %#v", in.Answer[0])
|
|
}
|
|
if aRec.A.String() != "127.0.0.1" {
|
|
t.Fatalf("Bad: %#v", in.Answer[0])
|
|
}
|
|
|
|
srvRec, ok := in.Answer[1].(*dns.SRV)
|
|
if !ok {
|
|
t.Fatalf("Bad: %#v", in.Answer[1])
|
|
}
|
|
if srvRec.Port != 12345 {
|
|
t.Fatalf("Bad: %#v", srvRec)
|
|
}
|
|
if srvRec.Target != "foo.node.dc1.consul." {
|
|
t.Fatalf("Bad: %#v", srvRec)
|
|
}
|
|
|
|
srvRec, ok = in.Answer[2].(*dns.SRV)
|
|
if !ok {
|
|
t.Fatalf("Bad: %#v", in.Answer[1])
|
|
}
|
|
if srvRec.Port != 12346 {
|
|
t.Fatalf("Bad: %#v", srvRec)
|
|
}
|
|
if srvRec.Target != "foo.node.dc1.consul." {
|
|
t.Fatalf("Bad: %#v", srvRec)
|
|
}
|
|
|
|
aRec, ok = in.Extra[0].(*dns.A)
|
|
if !ok {
|
|
t.Fatalf("Bad: %#v", in.Extra[0])
|
|
}
|
|
if aRec.Hdr.Name != "foo.node.dc1.consul." {
|
|
t.Fatalf("Bad: %#v", in.Extra[0])
|
|
}
|
|
if aRec.A.String() != "127.0.0.1" {
|
|
t.Fatalf("Bad: %#v", in.Extra[0])
|
|
}
|
|
}
|
|
|
|
func TestDNS_Recurse(t *testing.T) {
|
|
dir, srv := makeDNSServer(t)
|
|
defer os.RemoveAll(dir)
|
|
defer srv.agent.Shutdown()
|
|
|
|
m := new(dns.Msg)
|
|
m.SetQuestion("apple.com.", dns.TypeANY)
|
|
|
|
c := new(dns.Client)
|
|
c.Net = "tcp"
|
|
in, _, err := c.Exchange(m, srv.agent.config.DNSAddr)
|
|
if err != nil {
|
|
t.Fatalf("err: %v", err)
|
|
}
|
|
|
|
if len(in.Answer) == 0 {
|
|
t.Fatalf("Bad: %#v", in)
|
|
}
|
|
if in.Rcode != dns.RcodeSuccess {
|
|
t.Fatalf("Bad: %#v", in)
|
|
}
|
|
}
|