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|
package test
import (
"bytes"
"io/ioutil"
"net/http"
"testing"
"github.com/miekg/dns"
)
func TestReload(t *testing.T) {
corefile := `.:0 {
whoami
}
`
coreInput := NewInput(corefile)
c, err := CoreDNSServer(corefile)
if err != nil {
t.Fatalf("Could not get CoreDNS serving instance: %s", err)
}
udp, _ := CoreDNSServerPorts(c, 0)
send(t, udp)
c1, err := c.Restart(coreInput)
if err != nil {
t.Fatal(err)
}
udp, _ = CoreDNSServerPorts(c1, 0)
send(t, udp)
c1.Stop()
}
func send(t *testing.T, server string) {
m := new(dns.Msg)
m.SetQuestion("whoami.example.org.", dns.TypeSRV)
r, err := dns.Exchange(m, server)
if err != nil {
// This seems to fail a lot on travis, quick'n dirty: redo
r, err = dns.Exchange(m, server)
if err != nil {
return
}
}
if r.Rcode != dns.RcodeSuccess {
t.Fatalf("Expected successful reply, got %s", dns.RcodeToString[r.Rcode])
}
if len(r.Extra) != 2 {
t.Fatalf("Expected 2 RRs in additional, got %d", len(r.Extra))
}
}
func TestReloadHealth(t *testing.T) {
corefile := `
.:0 {
health 127.0.0.1:52182
whoami
}`
c, err := CoreDNSServer(corefile)
if err != nil {
t.Fatalf("Could not get service instance: %s", err)
}
// This fails with address 8080 already in use, it shouldn't.
if c1, err := c.Restart(NewInput(corefile)); err != nil {
t.Fatal(err)
} else {
c1.Stop()
}
}
func TestReloadMetricsHealth(t *testing.T) {
corefile := `
.:0 {
prometheus 127.0.0.1:53183
health 127.0.0.1:53184
whoami
}`
c, err := CoreDNSServer(corefile)
if err != nil {
t.Fatalf("Could not get service instance: %s", err)
}
c1, err := c.Restart(NewInput(corefile))
if err != nil {
t.Fatal(err)
}
defer c1.Stop()
// Send query to trigger monitoring to export on the new process
udp, _ := CoreDNSServerPorts(c1, 0)
m := new(dns.Msg)
m.SetQuestion("example.org.", dns.TypeA)
if _, err := dns.Exchange(m, udp); err != nil {
t.Fatal(err)
}
// Health
resp, err := http.Get("http://localhost:53184/health")
if err != nil {
t.Fatal(err)
}
ok, _ := ioutil.ReadAll(resp.Body)
resp.Body.Close()
if string(ok) != "OK" {
t.Errorf("Failed to receive OK, got %s", ok)
}
// Metrics
resp, err = http.Get("http://localhost:53183/metrics")
if err != nil {
t.Fatal(err)
}
const proc = "process_virtual_memory_bytes"
metrics, _ := ioutil.ReadAll(resp.Body)
if !bytes.Contains(metrics, []byte(proc)) {
t.Errorf("Failed to see %s in metric output", proc)
}
}
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