func startProxy() http.Handler {
h, err := proxy.NewHandler((*peers).Endpoints())
if err != nil {
log.Fatal(err)
}
return h
}
// startProxy launches an HTTP proxy for client communication which proxies to other etcd nodes.
func startProxy(cfg *config) error {
cls, err := setupCluster(cfg)
if err != nil {
return fmt.Errorf("error setting up initial cluster: %v", err)
}
if cfg.durl != "" {
s, err := discovery.GetCluster(cfg.durl, cfg.dproxy)
if err != nil {
return err
}
if cls, err = etcdserver.NewClusterFromString(cfg.durl, s); err != nil {
return err
}
}
pt, err := transport.NewTransport(cfg.clientTLSInfo)
if err != nil {
return err
}
// TODO(jonboulle): update peerURLs dynamically (i.e. when updating
// clientURLs) instead of just using the initial fixed list here
peerURLs := cls.PeerURLs()
uf := func() []string {
cls, err := etcdserver.GetClusterFromPeers(peerURLs)
if err != nil {
log.Printf("proxy: %v", err)
return []string{}
}
return cls.ClientURLs()
}
ph := proxy.NewHandler(pt, uf)
ph = &cors.CORSHandler{
Handler: ph,
Info: cfg.corsInfo,
}
if cfg.isReadonlyProxy() {
ph = proxy.NewReadonlyHandler(ph)
}
// Start a proxy server goroutine for each listen address
for _, u := range cfg.lcurls {
l, err := transport.NewListener(u.Host, u.Scheme, cfg.clientTLSInfo)
if err != nil {
return err
}
host := u.Host
go func() {
log.Print("proxy: listening for client requests on ", host)
log.Fatal(http.Serve(l, ph))
}()
}
return nil
}
// startProxy launches an HTTP proxy for client communication which proxies to other etcd nodes.
func startProxy() {
cls, err := setupCluster()
if err != nil {
log.Fatalf("etcd: error setting up initial cluster: %v", err)
}
pt, err := transport.NewTransport(clientTLSInfo)
if err != nil {
log.Fatal(err)
}
// TODO(jonboulle): update peerURLs dynamically (i.e. when updating
// clientURLs) instead of just using the initial fixed list here
peerURLs := cls.PeerURLs()
uf := func() []string {
cls, err := etcdserver.GetClusterFromPeers(peerURLs)
if err != nil {
log.Printf("etcd: %v", err)
return []string{}
}
return cls.ClientURLs()
}
ph := proxy.NewHandler(pt, uf)
ph = &cors.CORSHandler{
Handler: ph,
Info: corsInfo,
}
if string(*proxyFlag) == flags.ProxyValueReadonly {
ph = proxy.NewReadonlyHandler(ph)
}
lcurls, err := flags.URLsFromFlags(fs, "listen-client-urls", "bind-addr", clientTLSInfo)
if err != nil {
log.Fatal(err.Error())
}
// Start a proxy server goroutine for each listen address
for _, u := range lcurls {
l, err := transport.NewListener(u.Host, clientTLSInfo)
if err != nil {
log.Fatal(err)
}
host := u.Host
go func() {
log.Print("etcd: proxy listening for client requests on ", host)
log.Fatal(http.Serve(l, ph))
}()
}
}
// startProxy launches an HTTP proxy for client communication which proxies to other etcd nodes.
func startProxy() {
ph, err := proxy.NewHandler((*peers).Endpoints())
if err != nil {
log.Fatal(err)
}
// Start a proxy server goroutine for each listen address
for _, addr := range *addrs {
addr := addr
go func() {
log.Print("Listening for client requests on ", addr)
log.Fatal(http.ListenAndServe(addr, ph))
}()
}
}
// startProxy launches an HTTP proxy for client communication which proxies to other etcd nodes.
func startProxy() {
pt, err := transport.NewTransport(clientTLSInfo)
if err != nil {
log.Fatal(err)
}
ph, err := proxy.NewHandler(pt, (*cluster).PeerURLs())
if err != nil {
log.Fatal(err)
}
ph = &pkg.CORSHandler{
Handler: ph,
Info: cors,
}
if string(*proxyFlag) == flagtypes.ProxyValueReadonly {
ph = proxy.NewReadonlyHandler(ph)
}
lcurls, err := pkg.URLsFromFlags(flag.CommandLine, "listen-client-urls", "bind-addr", clientTLSInfo)
if err != nil {
log.Fatal(err.Error())
}
// Start a proxy server goroutine for each listen address
for _, u := range lcurls {
l, err := transport.NewListener(u.Host, clientTLSInfo)
if err != nil {
log.Fatal(err)
}
host := u.Host
go func() {
log.Print("Listening for client requests on ", host)
log.Fatal(http.Serve(l, ph))
}()
}
}
func main() {
pt := &http.Transport{
// timeouts taken from http.DefaultTransport
Dial: (&net.Dialer{
Timeout: 30 * time.Second,
KeepAlive: 30 * time.Second,
}).Dial,
TLSHandshakeTimeout: 10 * time.Second,
}
ma, _ := client.NewMembersAPI(pt, "http://localhost:7001", 15*time.Second)
// TODO(philips): persist to disk
memURLs := []string{"http://localhost:4001"}
uf := func() []string {
mems, err := ma.List()
if err != nil {
log.Print("unable to list members.")
return memURLs
}
for _, k := range mems {
memURLs = append(memURLs, k.ClientURLs...)
}
return memURLs
}
ph := proxy.NewHandler(pt, uf)
ph = http.HandlerFunc(wo(ph))
ph = http.HandlerFunc(ro(ph))
l, err := net.Listen("tcp", *addr)
if err != nil {
log.Fatal(err)
}
log.Print("etcd: proxy listening for client requests on ", *addr)
log.Fatal(http.Serve(l, ph))
}
// startProxy launches an HTTP proxy for client communication which proxies to other etcd nodes.
func startProxy(cfg *config) error {
urlsmap, _, err := getPeerURLsMapAndToken(cfg, "proxy")
if err != nil {
return fmt.Errorf("error setting up initial cluster: %v", err)
}
pt, err := transport.NewTimeoutTransport(cfg.peerTLSInfo, time.Duration(cfg.proxyDialTimeoutMs)*time.Millisecond, time.Duration(cfg.proxyReadTimeoutMs)*time.Millisecond, time.Duration(cfg.proxyWriteTimeoutMs)*time.Millisecond)
if err != nil {
return err
}
pt.MaxIdleConnsPerHost = proxy.DefaultMaxIdleConnsPerHost
tr, err := transport.NewTimeoutTransport(cfg.peerTLSInfo, time.Duration(cfg.proxyDialTimeoutMs)*time.Millisecond, time.Duration(cfg.proxyReadTimeoutMs)*time.Millisecond, time.Duration(cfg.proxyWriteTimeoutMs)*time.Millisecond)
if err != nil {
return err
}
cfg.dir = path.Join(cfg.dir, "proxy")
err = os.MkdirAll(cfg.dir, 0700)
if err != nil {
return err
}
var peerURLs []string
clusterfile := path.Join(cfg.dir, "cluster")
b, err := ioutil.ReadFile(clusterfile)
switch {
case err == nil:
if cfg.durl != "" {
plog.Warningf("discovery token ignored since the proxy has already been initialized. Valid cluster file found at %q", clusterfile)
}
urls := struct{ PeerURLs []string }{}
err := json.Unmarshal(b, &urls)
if err != nil {
return err
}
peerURLs = urls.PeerURLs
plog.Infof("proxy: using peer urls %v from cluster file %q", peerURLs, clusterfile)
case os.IsNotExist(err):
if cfg.durl != "" {
s, err := discovery.GetCluster(cfg.durl, cfg.dproxy)
if err != nil {
return err
}
if urlsmap, err = types.NewURLsMap(s); err != nil {
return err
}
}
peerURLs = urlsmap.URLs()
plog.Infof("proxy: using peer urls %v ", peerURLs)
default:
return err
}
clientURLs := []string{}
uf := func() []string {
gcls, err := etcdserver.GetClusterFromRemotePeers(peerURLs, tr)
// TODO: remove the 2nd check when we fix GetClusterFromPeers
// GetClusterFromPeers should not return nil error with an invalid empty cluster
if err != nil {
plog.Warningf("proxy: %v", err)
return []string{}
}
if len(gcls.Members()) == 0 {
return clientURLs
}
clientURLs = gcls.ClientURLs()
urls := struct{ PeerURLs []string }{gcls.PeerURLs()}
b, err := json.Marshal(urls)
if err != nil {
plog.Warningf("proxy: error on marshal peer urls %s", err)
return clientURLs
}
err = ioutil.WriteFile(clusterfile+".bak", b, 0600)
if err != nil {
plog.Warningf("proxy: error on writing urls %s", err)
return clientURLs
}
err = os.Rename(clusterfile+".bak", clusterfile)
if err != nil {
plog.Warningf("proxy: error on updating clusterfile %s", err)
return clientURLs
}
if !reflect.DeepEqual(gcls.PeerURLs(), peerURLs) {
plog.Noticef("proxy: updated peer urls in cluster file from %v to %v", peerURLs, gcls.PeerURLs())
}
peerURLs = gcls.PeerURLs()
return clientURLs
}
ph := proxy.NewHandler(pt, uf, time.Duration(cfg.proxyFailureWaitMs)*time.Millisecond, time.Duration(cfg.proxyRefreshIntervalMs)*time.Millisecond)
ph = &cors.CORSHandler{
Handler: ph,
Info: cfg.corsInfo,
}
if cfg.isReadonlyProxy() {
ph = proxy.NewReadonlyHandler(ph)
}
// Start a proxy server goroutine for each listen address
for _, u := range cfg.lcurls {
l, err := transport.NewListener(u.Host, u.Scheme, cfg.clientTLSInfo)
if err != nil {
return err
}
host := u.String()
go func() {
plog.Info("proxy: listening for client requests on ", host)
mux := http.NewServeMux()
mux.Handle("/metrics", prometheus.Handler())
mux.Handle("/", ph)
plog.Fatal(http.Serve(l, mux))
}()
}
return nil
}
// startProxy launches an HTTP proxy for client communication which proxies to other etcd nodes.
func startProxy() error {
apurls, err := flags.URLsFromFlags(fs, "initial-advertise-peer-urls", "addr", peerTLSInfo)
if err != nil {
return err
}
cls, err := setupCluster(apurls)
if err != nil {
return fmt.Errorf("error setting up initial cluster: %v", err)
}
if *durl != "" {
s, err := discovery.GetCluster(*durl, *dproxy)
if err != nil {
return err
}
if cls, err = etcdserver.NewClusterFromString(*durl, s); err != nil {
return err
}
}
pt, err := transport.NewTransport(clientTLSInfo)
if err != nil {
return err
}
// TODO(jonboulle): update peerURLs dynamically (i.e. when updating
// clientURLs) instead of just using the initial fixed list here
peerURLs := cls.PeerURLs()
uf := func() []string {
cls, err := etcdserver.GetClusterFromPeers(peerURLs)
if err != nil {
log.Printf("proxy: %v", err)
return []string{}
}
return cls.ClientURLs()
}
ph := proxy.NewHandler(pt, uf)
ph = &cors.CORSHandler{
Handler: ph,
Info: corsInfo,
}
if proxyFlag.String() == proxyFlagReadonly {
ph = proxy.NewReadonlyHandler(ph)
}
lcurls, err := flags.URLsFromFlags(fs, "listen-client-urls", "bind-addr", clientTLSInfo)
if err != nil {
return err
}
// Start a proxy server goroutine for each listen address
for _, u := range lcurls {
l, err := transport.NewListener(u.Host, u.Scheme, clientTLSInfo)
if err != nil {
return err
}
host := u.Host
go func() {
log.Print("proxy: listening for client requests on ", host)
log.Fatal(http.Serve(l, ph))
}()
}
return nil
}
// startProxy launches an HTTP proxy for client communication which proxies to other etcd nodes.
func startProxy(cfg *config) error {
cls, err := setupCluster(cfg)
if err != nil {
return fmt.Errorf("error setting up initial cluster: %v", err)
}
if cfg.durl != "" {
s, err := discovery.GetCluster(cfg.durl, cfg.dproxy)
if err != nil {
return err
}
if cls, err = etcdserver.NewClusterFromString(cfg.durl, s); err != nil {
return err
}
}
pt, err := transport.NewTransport(cfg.clientTLSInfo)
if err != nil {
return err
}
tr, err := transport.NewTransport(cfg.peerTLSInfo)
if err != nil {
return err
}
if cfg.dir == "" {
cfg.dir = fmt.Sprintf("%v.etcd", cfg.name)
log.Printf("no proxy data-dir provided, using default proxy data-dir ./%s", cfg.dir)
}
cfg.dir = path.Join(cfg.dir, "proxy")
err = os.MkdirAll(cfg.dir, 0700)
if err != nil {
return err
}
var peerURLs []string
clusterfile := path.Join(cfg.dir, "cluster")
b, err := ioutil.ReadFile(clusterfile)
switch {
case err == nil:
urls := struct{ PeerURLs []string }{}
err := json.Unmarshal(b, &urls)
if err != nil {
return err
}
peerURLs = urls.PeerURLs
log.Printf("proxy: using peer urls %v from cluster file ./%s", peerURLs, clusterfile)
case os.IsNotExist(err):
peerURLs = cls.PeerURLs()
log.Printf("proxy: using peer urls %v ", peerURLs)
default:
return err
}
uf := func() []string {
gcls, err := etcdserver.GetClusterFromPeers(peerURLs, tr)
// TODO: remove the 2nd check when we fix GetClusterFromPeers
// GetClusterFromPeers should not return nil error with an invaild empty cluster
if err != nil {
log.Printf("proxy: %v", err)
return []string{}
}
if len(gcls.Members()) == 0 {
return cls.ClientURLs()
}
cls = gcls
urls := struct{ PeerURLs []string }{cls.PeerURLs()}
b, err := json.Marshal(urls)
if err != nil {
log.Printf("proxy: error on marshal peer urls %s", err)
return cls.ClientURLs()
}
err = ioutil.WriteFile(clusterfile+".bak", b, 0600)
if err != nil {
log.Printf("proxy: error on writing urls %s", err)
return cls.ClientURLs()
}
err = os.Rename(clusterfile+".bak", clusterfile)
if err != nil {
log.Printf("proxy: error on updating clusterfile %s", err)
return cls.ClientURLs()
}
if !reflect.DeepEqual(cls.PeerURLs(), peerURLs) {
log.Printf("proxy: updated peer urls in cluster file from %v to %v", peerURLs, cls.PeerURLs())
}
peerURLs = cls.PeerURLs()
return cls.ClientURLs()
}
ph := proxy.NewHandler(pt, uf)
ph = &cors.CORSHandler{
Handler: ph,
Info: cfg.corsInfo,
}
if cfg.isReadonlyProxy() {
ph = proxy.NewReadonlyHandler(ph)
}
// Start a proxy server goroutine for each listen address
for _, u := range cfg.lcurls {
l, err := transport.NewListener(u.Host, u.Scheme, cfg.clientTLSInfo)
if err != nil {
return err
}
host := u.Host
go func() {
log.Print("proxy: listening for client requests on ", host)
log.Fatal(http.Serve(l, ph))
}()
}
return nil
}
