Exemple #1
0
func newTestServer(t *testing.T, c bool) *server {
	Port += 10
	StrPort = strconv.Itoa(Port)
	s := new(server)
	client := etcd.NewClient([]string{"http://127.0.0.1:4001"})

	// TODO(miek): why don't I use NewServer??
	s.group = new(sync.WaitGroup)
	s.scache = cache.New(100, 0)
	s.rcache = cache.New(100, 0)
	if c {
		s.rcache = cache.New(100, 60) // 100 items, 60s ttl
	}
	s.config = new(Config)
	s.config.Domain = "skydns.test."
	s.config.DnsAddr = "127.0.0.1:" + StrPort
	s.config.Nameservers = []string{"8.8.4.4:53"}
	SetDefaults(s.config)
	s.config.Local = "104.server1.development.region1.skydns.test."
	s.config.Priority = 10
	s.config.RCacheTtl = RCacheTtl
	s.config.Ttl = 3600
	s.config.Ndots = 2

	s.dnsUDPclient = &dns.Client{Net: "udp", ReadTimeout: 2 * s.config.ReadTimeout, WriteTimeout: 2 * s.config.ReadTimeout, SingleInflight: true}
	s.dnsTCPclient = &dns.Client{Net: "tcp", ReadTimeout: 2 * s.config.ReadTimeout, WriteTimeout: 2 * s.config.ReadTimeout, SingleInflight: true}

	s.backend = backendetcd.NewBackend(client, &backendetcd.Config{
		Ttl:      s.config.Ttl,
		Priority: s.config.Priority,
	})

	go s.Run()
	// Yeah, yeah, should do a proper fix.
	time.Sleep(500 * time.Millisecond)
	return s
}
Exemple #2
0
func main() {
	flag.Parse()
	machines := strings.Split(machine, ",")
	client := newClient(machines, tlspem, tlskey, cacert)

	if nameserver != "" {
		for _, hostPort := range strings.Split(nameserver, ",") {
			if err := validateHostPort(hostPort); err != nil {
				log.Fatalf("skydns: nameserver is invalid: %s", err)
			}
			config.Nameservers = append(config.Nameservers, hostPort)
		}
	}
	if err := validateHostPort(config.DnsAddr); err != nil {
		log.Fatalf("skydns: addr is invalid: %s", err)
	}

	if err := loadConfig(client, config); err != nil {
		log.Fatalf("skydns: %s", err)
	}
	server.SetDefaults(config)

	if config.Local != "" {
		config.Local = dns.Fqdn(config.Local)
	}

	backend := backendetcd.NewBackend(client, &backendetcd.Config{
		Ttl:      config.Ttl,
		Priority: config.Priority,
	})
	s := server.New(backend, config)

	if discover {
		go func() {
			recv := make(chan *etcd.Response)
			go client.Watch("/_etcd/machines/", 0, true, recv, nil)
			duration := 1 * time.Second
			for {
				select {
				case n := <-recv:
					if n != nil {
						if client := updateClient(n, tlskey, tlspem, cacert); client != nil {
							backend.UpdateClient(client)
						}
						duration = 1 * time.Second // reset
					} else {
						// we can see an n == nil, probably when we can't connect to etcd.
						log.Printf("skydns: etcd machine cluster update failed, sleeping %s + ~3s", duration)
						time.Sleep(duration + (time.Duration(rand.Float32() * 3e9))) // Add some random.
						duration *= 2
						if duration > 32*time.Second {
							duration = 32 * time.Second
						}
					}
				}
			}
		}()
	}

	if stub {
		s.UpdateStubZones()
		go func() {
			recv := make(chan *etcd.Response)
			go client.Watch(msg.Path(config.Domain)+"/dns/stub/", 0, true, recv, nil)
			duration := 1 * time.Second
			for {
				select {
				case n := <-recv:
					if n != nil {
						s.UpdateStubZones()
						log.Printf("skydns: stubzone update")
						duration = 1 * time.Second // reset
					} else {
						// we can see an n == nil, probably when we can't connect to etcd.
						log.Printf("skydns: stubzone update failed, sleeping %s + ~3s", duration)
						time.Sleep(duration + (time.Duration(rand.Float32() * 3e9))) // Add some random.
						duration *= 2
						if duration > 32*time.Second {
							duration = 32 * time.Second
						}
					}
				}
			}
		}()
	}

	stats.Collect()  // Graphite
	server.Metrics() // Prometheus

	if err := s.Run(); err != nil {
		log.Fatalf("skydns: %s", err)
	}
}