mirror of
https://github.com/coredns/coredns.git
synced 2025-10-31 02:03:20 -04:00
f823825f8a
* plugin/forward: Move Proxy into pkg/plugin/proxy, to allow forward.Proxy to be used outside of forward plugin. Signed-off-by: Patrick Downey <patrick.downey@dioadconsulting.com>
280 lines
7.0 KiB
Go
280 lines
7.0 KiB
Go
package forward
|
|
|
|
import (
|
|
"context"
|
|
"sync/atomic"
|
|
"testing"
|
|
"time"
|
|
|
|
"github.com/coredns/coredns/plugin/pkg/dnstest"
|
|
"github.com/coredns/coredns/plugin/pkg/proxy"
|
|
"github.com/coredns/coredns/plugin/pkg/transport"
|
|
"github.com/coredns/coredns/plugin/test"
|
|
|
|
"github.com/miekg/dns"
|
|
)
|
|
|
|
func TestHealth(t *testing.T) {
|
|
defaultTimeout = 10 * time.Millisecond
|
|
|
|
i := uint32(0)
|
|
q := uint32(0)
|
|
s := dnstest.NewServer(func(w dns.ResponseWriter, r *dns.Msg) {
|
|
if atomic.LoadUint32(&q) == 0 { //drop the first query to trigger health-checking
|
|
atomic.AddUint32(&q, 1)
|
|
return
|
|
}
|
|
if r.Question[0].Name == "." && r.RecursionDesired == true {
|
|
atomic.AddUint32(&i, 1)
|
|
}
|
|
ret := new(dns.Msg)
|
|
ret.SetReply(r)
|
|
w.WriteMsg(ret)
|
|
})
|
|
defer s.Close()
|
|
|
|
p := proxy.NewProxy(s.Addr, transport.DNS)
|
|
p.GetHealthchecker().SetReadTimeout(10 * time.Millisecond)
|
|
p.GetHealthchecker().SetWriteTimeout(10 * time.Millisecond)
|
|
f := New()
|
|
f.SetProxy(p)
|
|
defer f.OnShutdown()
|
|
|
|
req := new(dns.Msg)
|
|
req.SetQuestion("example.org.", dns.TypeA)
|
|
|
|
f.ServeDNS(context.TODO(), &test.ResponseWriter{}, req)
|
|
|
|
time.Sleep(20 * time.Millisecond)
|
|
i1 := atomic.LoadUint32(&i)
|
|
if i1 != 1 {
|
|
t.Errorf("Expected number of health checks with RecursionDesired==true to be %d, got %d", 1, i1)
|
|
}
|
|
}
|
|
|
|
func TestHealthTCP(t *testing.T) {
|
|
defaultTimeout = 10 * time.Millisecond
|
|
|
|
i := uint32(0)
|
|
q := uint32(0)
|
|
s := dnstest.NewServer(func(w dns.ResponseWriter, r *dns.Msg) {
|
|
if atomic.LoadUint32(&q) == 0 { //drop the first query to trigger health-checking
|
|
atomic.AddUint32(&q, 1)
|
|
return
|
|
}
|
|
if r.Question[0].Name == "." && r.RecursionDesired == true {
|
|
atomic.AddUint32(&i, 1)
|
|
}
|
|
ret := new(dns.Msg)
|
|
ret.SetReply(r)
|
|
w.WriteMsg(ret)
|
|
})
|
|
defer s.Close()
|
|
|
|
p := proxy.NewProxy(s.Addr, transport.DNS)
|
|
p.GetHealthchecker().SetReadTimeout(10 * time.Millisecond)
|
|
p.GetHealthchecker().SetWriteTimeout(10 * time.Millisecond)
|
|
p.GetHealthchecker().SetTCPTransport()
|
|
f := New()
|
|
f.SetProxy(p)
|
|
defer f.OnShutdown()
|
|
|
|
req := new(dns.Msg)
|
|
req.SetQuestion("example.org.", dns.TypeA)
|
|
|
|
f.ServeDNS(context.TODO(), &test.ResponseWriter{TCP: true}, req)
|
|
|
|
time.Sleep(20 * time.Millisecond)
|
|
i1 := atomic.LoadUint32(&i)
|
|
if i1 != 1 {
|
|
t.Errorf("Expected number of health checks with RecursionDesired==true to be %d, got %d", 1, i1)
|
|
}
|
|
}
|
|
|
|
func TestHealthNoRecursion(t *testing.T) {
|
|
defaultTimeout = 10 * time.Millisecond
|
|
|
|
i := uint32(0)
|
|
q := uint32(0)
|
|
s := dnstest.NewServer(func(w dns.ResponseWriter, r *dns.Msg) {
|
|
if atomic.LoadUint32(&q) == 0 { //drop the first query to trigger health-checking
|
|
atomic.AddUint32(&q, 1)
|
|
return
|
|
}
|
|
if r.Question[0].Name == "." && r.RecursionDesired == false {
|
|
atomic.AddUint32(&i, 1)
|
|
}
|
|
ret := new(dns.Msg)
|
|
ret.SetReply(r)
|
|
w.WriteMsg(ret)
|
|
})
|
|
defer s.Close()
|
|
|
|
p := proxy.NewProxy(s.Addr, transport.DNS)
|
|
p.GetHealthchecker().SetReadTimeout(10 * time.Millisecond)
|
|
p.GetHealthchecker().SetWriteTimeout(10 * time.Millisecond)
|
|
p.GetHealthchecker().SetRecursionDesired(false)
|
|
f := New()
|
|
f.SetProxy(p)
|
|
defer f.OnShutdown()
|
|
|
|
req := new(dns.Msg)
|
|
req.SetQuestion("example.org.", dns.TypeA)
|
|
|
|
f.ServeDNS(context.TODO(), &test.ResponseWriter{}, req)
|
|
|
|
time.Sleep(20 * time.Millisecond)
|
|
i1 := atomic.LoadUint32(&i)
|
|
if i1 != 1 {
|
|
t.Errorf("Expected number of health checks with RecursionDesired==false to be %d, got %d", 1, i1)
|
|
}
|
|
}
|
|
|
|
func TestHealthTimeout(t *testing.T) {
|
|
defaultTimeout = 10 * time.Millisecond
|
|
|
|
i := uint32(0)
|
|
q := uint32(0)
|
|
s := dnstest.NewServer(func(w dns.ResponseWriter, r *dns.Msg) {
|
|
if r.Question[0].Name == "." {
|
|
// health check, answer
|
|
atomic.AddUint32(&i, 1)
|
|
ret := new(dns.Msg)
|
|
ret.SetReply(r)
|
|
w.WriteMsg(ret)
|
|
return
|
|
}
|
|
if atomic.LoadUint32(&q) == 0 { //drop only first query
|
|
atomic.AddUint32(&q, 1)
|
|
return
|
|
}
|
|
ret := new(dns.Msg)
|
|
ret.SetReply(r)
|
|
w.WriteMsg(ret)
|
|
})
|
|
defer s.Close()
|
|
|
|
p := proxy.NewProxy(s.Addr, transport.DNS)
|
|
p.GetHealthchecker().SetReadTimeout(10 * time.Millisecond)
|
|
p.GetHealthchecker().SetWriteTimeout(10 * time.Millisecond)
|
|
f := New()
|
|
f.SetProxy(p)
|
|
defer f.OnShutdown()
|
|
|
|
req := new(dns.Msg)
|
|
req.SetQuestion("example.org.", dns.TypeA)
|
|
|
|
f.ServeDNS(context.TODO(), &test.ResponseWriter{}, req)
|
|
|
|
time.Sleep(20 * time.Millisecond)
|
|
i1 := atomic.LoadUint32(&i)
|
|
if i1 != 1 {
|
|
t.Errorf("Expected number of health checks to be %d, got %d", 1, i1)
|
|
}
|
|
}
|
|
|
|
func TestHealthMaxFails(t *testing.T) {
|
|
defaultTimeout = 10 * time.Millisecond
|
|
//,hcInterval = 10 * time.Millisecond
|
|
|
|
s := dnstest.NewServer(func(w dns.ResponseWriter, r *dns.Msg) {
|
|
// timeout
|
|
})
|
|
defer s.Close()
|
|
|
|
p := proxy.NewProxy(s.Addr, transport.DNS)
|
|
p.SetReadTimeout(10 * time.Millisecond)
|
|
p.GetHealthchecker().SetReadTimeout(10 * time.Millisecond)
|
|
p.GetHealthchecker().SetWriteTimeout(10 * time.Millisecond)
|
|
f := New()
|
|
f.hcInterval = 10 * time.Millisecond
|
|
f.maxfails = 2
|
|
f.SetProxy(p)
|
|
defer f.OnShutdown()
|
|
|
|
req := new(dns.Msg)
|
|
req.SetQuestion("example.org.", dns.TypeA)
|
|
|
|
f.ServeDNS(context.TODO(), &test.ResponseWriter{}, req)
|
|
|
|
time.Sleep(100 * time.Millisecond)
|
|
fails := p.Fails()
|
|
if !p.Down(f.maxfails) {
|
|
t.Errorf("Expected Proxy fails to be greater than %d, got %d", f.maxfails, fails)
|
|
}
|
|
}
|
|
|
|
func TestHealthNoMaxFails(t *testing.T) {
|
|
defaultTimeout = 10 * time.Millisecond
|
|
|
|
i := uint32(0)
|
|
s := dnstest.NewServer(func(w dns.ResponseWriter, r *dns.Msg) {
|
|
if r.Question[0].Name == "." {
|
|
// health check, answer
|
|
atomic.AddUint32(&i, 1)
|
|
ret := new(dns.Msg)
|
|
ret.SetReply(r)
|
|
w.WriteMsg(ret)
|
|
}
|
|
})
|
|
defer s.Close()
|
|
|
|
p := proxy.NewProxy(s.Addr, transport.DNS)
|
|
p.GetHealthchecker().SetReadTimeout(10 * time.Millisecond)
|
|
p.GetHealthchecker().SetWriteTimeout(10 * time.Millisecond)
|
|
f := New()
|
|
f.maxfails = 0
|
|
f.SetProxy(p)
|
|
defer f.OnShutdown()
|
|
|
|
req := new(dns.Msg)
|
|
req.SetQuestion("example.org.", dns.TypeA)
|
|
|
|
f.ServeDNS(context.TODO(), &test.ResponseWriter{}, req)
|
|
|
|
time.Sleep(20 * time.Millisecond)
|
|
i1 := atomic.LoadUint32(&i)
|
|
if i1 != 0 {
|
|
t.Errorf("Expected number of health checks to be %d, got %d", 0, i1)
|
|
}
|
|
}
|
|
|
|
func TestHealthDomain(t *testing.T) {
|
|
defaultTimeout = 10 * time.Millisecond
|
|
|
|
hcDomain := "example.org."
|
|
i := uint32(0)
|
|
q := uint32(0)
|
|
s := dnstest.NewServer(func(w dns.ResponseWriter, r *dns.Msg) {
|
|
if atomic.LoadUint32(&q) == 0 { //drop the first query to trigger health-checking
|
|
atomic.AddUint32(&q, 1)
|
|
return
|
|
}
|
|
if r.Question[0].Name == hcDomain && r.RecursionDesired == true {
|
|
atomic.AddUint32(&i, 1)
|
|
}
|
|
ret := new(dns.Msg)
|
|
ret.SetReply(r)
|
|
w.WriteMsg(ret)
|
|
})
|
|
defer s.Close()
|
|
p := proxy.NewProxy(s.Addr, transport.DNS)
|
|
p.GetHealthchecker().SetReadTimeout(10 * time.Millisecond)
|
|
p.GetHealthchecker().SetWriteTimeout(10 * time.Millisecond)
|
|
p.GetHealthchecker().SetDomain(hcDomain)
|
|
f := New()
|
|
f.SetProxy(p)
|
|
defer f.OnShutdown()
|
|
|
|
req := new(dns.Msg)
|
|
req.SetQuestion(".", dns.TypeNS)
|
|
|
|
f.ServeDNS(context.TODO(), &test.ResponseWriter{}, req)
|
|
|
|
time.Sleep(20 * time.Millisecond)
|
|
i1 := atomic.LoadUint32(&i)
|
|
if i1 != 1 {
|
|
t.Errorf("Expected number of health checks with Domain==%s to be %d, got %d", hcDomain, 1, i1)
|
|
}
|
|
}
|