// Launch starts a member based on ServerConfig, PeerListeners
// and ClientListeners.
func (m *member) Launch() error {
plog.Printf("launching %s (%s)", m.Name, m.grpcAddr)
var err error
if m.s, err = etcdserver.NewServer(&m.ServerConfig); err != nil {
return fmt.Errorf("failed to initialize the etcd server: %v", err)
}
m.s.SyncTicker = time.Tick(500 * time.Millisecond)
m.s.Start()
m.raftHandler = &testutil.PauseableHandler{Next: v2http.NewPeerHandler(m.s)}
for _, ln := range m.PeerListeners {
hs := &httptest.Server{
Listener: ln,
Config: &http.Server{Handler: m.raftHandler},
}
if m.PeerTLSInfo == nil {
hs.Start()
} else {
hs.TLS, err = m.PeerTLSInfo.ServerConfig()
if err != nil {
return err
}
hs.StartTLS()
}
m.hss = append(m.hss, hs)
}
for _, ln := range m.ClientListeners {
hs := &httptest.Server{
Listener: ln,
Config: &http.Server{Handler: v2http.NewClientHandler(m.s, m.ServerConfig.ReqTimeout())},
}
if m.ClientTLSInfo == nil {
hs.Start()
} else {
hs.TLS, err = m.ClientTLSInfo.ServerConfig()
if err != nil {
return err
}
hs.StartTLS()
}
m.hss = append(m.hss, hs)
}
if m.grpcListener != nil {
var (
tlscfg *tls.Config
)
if m.ClientTLSInfo != nil && !m.ClientTLSInfo.Empty() {
tlscfg, err = m.ClientTLSInfo.ServerConfig()
if err != nil {
return err
}
}
m.grpcServer = v3rpc.Server(m.s, tlscfg)
go m.grpcServer.Serve(m.grpcListener)
}
plog.Printf("launched %s (%s)", m.Name, m.grpcAddr)
return nil
}
// serve accepts incoming connections on the listener l,
// creating a new service goroutine for each. The service goroutines
// read requests and then call handler to reply to them.
func serve(sctx *serveCtx, s *etcdserver.EtcdServer, tlscfg *tls.Config, handler http.Handler) error {
logger := defaultLog.New(ioutil.Discard, "etcdhttp", 0)
<-s.ReadyNotify()
plog.Info("ready to serve client requests")
m := cmux.New(sctx.l)
if sctx.insecure {
gs := v3rpc.Server(s, nil)
grpcl := m.Match(cmux.HTTP2())
go func() { plog.Fatal(gs.Serve(grpcl)) }()
srvhttp := &http.Server{
Handler: handler,
ErrorLog: logger, // do not log user error
}
httpl := m.Match(cmux.HTTP1())
go func() { plog.Fatal(srvhttp.Serve(httpl)) }()
plog.Noticef("serving insecure client requests on %s, this is strongly discouraged!", sctx.host)
}
if sctx.secure {
gs := v3rpc.Server(s, tlscfg)
handler = grpcHandlerFunc(gs, handler)
tlsl := tls.NewListener(m.Match(cmux.Any()), tlscfg)
// TODO: add debug flag; enable logging when debug flag is set
srv := &http.Server{
Handler: handler,
TLSConfig: tlscfg,
ErrorLog: logger, // do not log user error
}
go func() { plog.Fatal(srv.Serve(tlsl)) }()
plog.Infof("serving client requests on %s", sctx.host)
}
return m.Serve()
}
// Launch starts a member based on ServerConfig, PeerListeners
// and ClientListeners.
func (m *member) Launch() error {
var err error
if m.s, err = etcdserver.NewServer(&m.ServerConfig); err != nil {
return fmt.Errorf("failed to initialize the etcd server: %v", err)
}
m.s.SyncTicker = time.Tick(500 * time.Millisecond)
m.s.Start()
m.raftHandler = &testutil.PauseableHandler{Next: etcdhttp.NewPeerHandler(m.s)}
for _, ln := range m.PeerListeners {
hs := &httptest.Server{
Listener: ln,
Config: &http.Server{Handler: m.raftHandler},
}
if m.PeerTLSInfo == nil {
hs.Start()
} else {
hs.TLS, err = m.PeerTLSInfo.ServerConfig()
if err != nil {
return err
}
hs.StartTLS()
}
m.hss = append(m.hss, hs)
}
for _, ln := range m.ClientListeners {
hs := &httptest.Server{
Listener: ln,
Config: &http.Server{Handler: etcdhttp.NewClientHandler(m.s, m.ServerConfig.ReqTimeout())},
}
if m.ClientTLSInfo == nil {
hs.Start()
} else {
hs.TLS, err = m.ClientTLSInfo.ServerConfig()
if err != nil {
return err
}
hs.StartTLS()
}
m.hss = append(m.hss, hs)
}
if m.grpcListener != nil {
m.grpcServer, err = v3rpc.Server(m.s, m.ClientTLSInfo)
go m.grpcServer.Serve(m.grpcListener)
}
return nil
}
// serve accepts incoming connections on the listener l,
// creating a new service goroutine for each. The service goroutines
// read requests and then call handler to reply to them.
func serve(sctx *serveCtx, s *etcdserver.EtcdServer, tlscfg *tls.Config, handler http.Handler) error {
logger := defaultLog.New(ioutil.Discard, "etcdhttp", 0)
<-s.ReadyNotify()
plog.Info("ready to serve client requests")
m := cmux.New(sctx.l)
if sctx.insecure {
gs := v3rpc.Server(s, nil)
grpcl := m.Match(cmux.HTTP2())
go func() { plog.Fatal(gs.Serve(grpcl)) }()
opts := []grpc.DialOption{
grpc.WithInsecure(),
}
gwmux, err := registerGateway(sctx.l.Addr().String(), opts)
if err != nil {
return err
}
httpmux := http.NewServeMux()
httpmux.Handle("/v3alpha/", gwmux)
httpmux.Handle("/", handler)
srvhttp := &http.Server{
Handler: httpmux,
ErrorLog: logger, // do not log user error
}
httpl := m.Match(cmux.HTTP1())
go func() { plog.Fatal(srvhttp.Serve(httpl)) }()
plog.Noticef("serving insecure client requests on %s, this is strongly discouraged!", sctx.host)
}
if sctx.secure {
gs := v3rpc.Server(s, tlscfg)
handler = grpcHandlerFunc(gs, handler)
dtls := *tlscfg
// trust local server
dtls.InsecureSkipVerify = true
creds := credentials.NewTLS(&dtls)
opts := []grpc.DialOption{grpc.WithTransportCredentials(creds)}
gwmux, err := registerGateway(sctx.l.Addr().String(), opts)
if err != nil {
return err
}
tlsl := tls.NewListener(m.Match(cmux.Any()), tlscfg)
// TODO: add debug flag; enable logging when debug flag is set
httpmux := http.NewServeMux()
httpmux.Handle("/v3alpha/", gwmux)
httpmux.Handle("/", handler)
srv := &http.Server{
Handler: httpmux,
TLSConfig: tlscfg,
ErrorLog: logger, // do not log user error
}
go func() { plog.Fatal(srv.Serve(tlsl)) }()
plog.Infof("serving client requests on %s", sctx.host)
}
return m.Serve()
}
// startEtcd launches the etcd server and HTTP handlers for client/server communication.
func startEtcd(cfg *config) (<-chan struct{}, error) {
urlsmap, token, err := getPeerURLsMapAndToken(cfg, "etcd")
if err != nil {
return nil, fmt.Errorf("error setting up initial cluster: %v", err)
}
if !cfg.peerTLSInfo.Empty() {
plog.Infof("peerTLS: %s", cfg.peerTLSInfo)
}
plns := make([]net.Listener, 0)
for _, u := range cfg.lpurls {
if u.Scheme == "http" && !cfg.peerTLSInfo.Empty() {
plog.Warningf("The scheme of peer url %s is http while peer key/cert files are presented. Ignored peer key/cert files.", u.String())
}
var l net.Listener
l, err = rafthttp.NewListener(u, cfg.peerTLSInfo)
if err != nil {
return nil, err
}
urlStr := u.String()
plog.Info("listening for peers on ", urlStr)
defer func() {
if err != nil {
l.Close()
plog.Info("stopping listening for peers on ", urlStr)
}
}()
plns = append(plns, l)
}
if !cfg.clientTLSInfo.Empty() {
plog.Infof("clientTLS: %s", cfg.clientTLSInfo)
}
clns := make([]net.Listener, 0)
for _, u := range cfg.lcurls {
if u.Scheme == "http" && !cfg.clientTLSInfo.Empty() {
plog.Warningf("The scheme of client url %s is http while client key/cert files are presented. Ignored client key/cert files.", u.String())
}
var l net.Listener
l, err = net.Listen("tcp", u.Host)
if err != nil {
return nil, err
}
if fdLimit, err := runtimeutil.FDLimit(); err == nil {
if fdLimit <= reservedInternalFDNum {
plog.Fatalf("file descriptor limit[%d] of etcd process is too low, and should be set higher than %d to ensure internal usage", fdLimit, reservedInternalFDNum)
}
l = transport.LimitListener(l, int(fdLimit-reservedInternalFDNum))
}
// Do not wrap around this listener if TLS Info is set.
// HTTPS server expects TLS Conn created by TLSListener.
l, err = transport.NewKeepAliveListener(l, u.Scheme, cfg.clientTLSInfo)
if err != nil {
return nil, err
}
urlStr := u.String()
plog.Info("listening for client requests on ", urlStr)
defer func() {
if err != nil {
l.Close()
plog.Info("stopping listening for client requests on ", urlStr)
}
}()
clns = append(clns, l)
}
var v3l net.Listener
if cfg.v3demo {
v3l, err = net.Listen("tcp", cfg.gRPCAddr)
if err != nil {
plog.Fatal(err)
}
plog.Infof("listening for client rpc on %s", cfg.gRPCAddr)
}
srvcfg := &etcdserver.ServerConfig{
Name: cfg.name,
ClientURLs: cfg.acurls,
PeerURLs: cfg.apurls,
DataDir: cfg.dir,
DedicatedWALDir: cfg.walDir,
SnapCount: cfg.snapCount,
MaxSnapFiles: cfg.maxSnapFiles,
MaxWALFiles: cfg.maxWalFiles,
InitialPeerURLsMap: urlsmap,
InitialClusterToken: token,
DiscoveryURL: cfg.durl,
DiscoveryProxy: cfg.dproxy,
NewCluster: cfg.isNewCluster(),
ForceNewCluster: cfg.forceNewCluster,
PeerTLSInfo: cfg.peerTLSInfo,
TickMs: cfg.TickMs,
ElectionTicks: cfg.electionTicks(),
V3demo: cfg.v3demo,
AutoCompactionRetention: cfg.autoCompactionRetention,
StrictReconfigCheck: cfg.strictReconfigCheck,
EnablePprof: cfg.enablePprof,
}
var s *etcdserver.EtcdServer
s, err = etcdserver.NewServer(srvcfg)
if err != nil {
return nil, err
}
s.Start()
osutil.RegisterInterruptHandler(s.Stop)
if cfg.corsInfo.String() != "" {
plog.Infof("cors = %s", cfg.corsInfo)
}
ch := &cors.CORSHandler{
Handler: etcdhttp.NewClientHandler(s, srvcfg.ReqTimeout()),
Info: cfg.corsInfo,
}
ph := etcdhttp.NewPeerHandler(s)
// Start the peer server in a goroutine
for _, l := range plns {
go func(l net.Listener) {
plog.Fatal(serveHTTP(l, ph, 5*time.Minute))
}(l)
}
// Start a client server goroutine for each listen address
for _, l := range clns {
go func(l net.Listener) {
// read timeout does not work with http close notify
// TODO: https://github.com/golang/go/issues/9524
plog.Fatal(serveHTTP(l, ch, 0))
}(l)
}
if cfg.v3demo {
// set up v3 demo rpc
tls := &cfg.clientTLSInfo
if cfg.clientTLSInfo.Empty() {
tls = nil
}
grpcServer, err := v3rpc.Server(s, tls)
if err != nil {
s.Stop()
<-s.StopNotify()
return nil, err
}
go func() { plog.Fatal(grpcServer.Serve(v3l)) }()
}
return s.StopNotify(), nil
}
