// NewPeerHandler generates an http.Handler to handle etcd peer requests.
func NewPeerHandler(s *etcdserver.EtcdServer) http.Handler {
var lh http.Handler
if l := s.Lessor(); l != nil {
lh = lease.NewHandler(l)
}
return newPeerHandler(s.Cluster(), s.RaftHandler(), lh)
}
func NewClusterServer(s *etcdserver.EtcdServer) *ClusterServer {
return &ClusterServer{
cluster: s.Cluster(),
server: s,
raftTimer: s,
}
}
func NewWatchServer(s *etcdserver.EtcdServer) pb.WatchServer {
return &watchServer{
clusterID: int64(s.Cluster().ID()),
memberID: int64(s.ID()),
raftTimer: s,
watchable: s.Watchable(),
}
}
func NewKVServer(s *etcdserver.EtcdServer) pb.KVServer {
return &kvServer{
clusterID: int64(s.Cluster().ID()),
memberID: int64(s.ID()),
raftTimer: s,
kv: s,
}
}
func newHeader(s *etcdserver.EtcdServer) header {
return header{
clusterID: int64(s.Cluster().ID()),
memberID: int64(s.ID()),
raftTimer: s,
rev: func() int64 { return s.KV().Rev() },
}
}
// NewClientHandler generates a muxed http.Handler with the given parameters to serve etcd client requests.
func NewClientHandler(server *etcdserver.EtcdServer, timeout time.Duration) http.Handler {
sec := auth.NewStore(server, timeout)
kh := &keysHandler{
sec: sec,
server: server,
cluster: server.Cluster(),
timer: server,
timeout: timeout,
clientCertAuthEnabled: server.Cfg.ClientCertAuthEnabled,
}
sh := &statsHandler{
stats: server,
}
mh := &membersHandler{
sec: sec,
server: server,
cluster: server.Cluster(),
timeout: timeout,
clock: clockwork.NewRealClock(),
clientCertAuthEnabled: server.Cfg.ClientCertAuthEnabled,
}
dmh := &deprecatedMachinesHandler{
cluster: server.Cluster(),
}
sech := &authHandler{
sec: sec,
cluster: server.Cluster(),
clientCertAuthEnabled: server.Cfg.ClientCertAuthEnabled,
}
mux := http.NewServeMux()
mux.HandleFunc("/", http.NotFound)
mux.Handle(healthPath, healthHandler(server))
mux.HandleFunc(versionPath, versionHandler(server.Cluster(), serveVersion))
mux.Handle(keysPrefix, kh)
mux.Handle(keysPrefix+"/", kh)
mux.HandleFunc(statsPrefix+"/store", sh.serveStore)
mux.HandleFunc(statsPrefix+"/self", sh.serveSelf)
mux.HandleFunc(statsPrefix+"/leader", sh.serveLeader)
mux.HandleFunc(varsPath, serveVars)
mux.HandleFunc(configPath+"/local/log", logHandleFunc)
mux.Handle(metricsPath, prometheus.Handler())
mux.Handle(membersPrefix, mh)
mux.Handle(membersPrefix+"/", mh)
mux.Handle(deprecatedMachinesPrefix, dmh)
handleAuth(mux, sech)
return requestLogger(mux)
}
// startEtcd launches the etcd server and HTTP handlers for client/server communication.
func startEtcd(cfg *config) (<-chan struct{}, error) {
initialPeers, token, err := setupCluster(cfg)
if err != nil {
return nil, fmt.Errorf("error setting up initial cluster: %v", err)
}
pt, err := transport.NewTimeoutTransport(cfg.peerTLSInfo, time.Second, rafthttp.ConnReadTimeout, rafthttp.ConnWriteTimeout)
if err != nil {
return nil, err
}
if !cfg.peerTLSInfo.Empty() {
glog.V(2).Infof("etcd: peerTLS: %s", cfg.peerTLSInfo)
}
plns := make([]net.Listener, 0)
for _, u := range cfg.lpurls {
var l net.Listener
l, err = transport.NewTimeoutListener(u.Host, u.Scheme, cfg.peerTLSInfo, rafthttp.ConnReadTimeout, rafthttp.ConnWriteTimeout)
if err != nil {
return nil, err
}
urlStr := u.String()
glog.V(2).Info("etcd: listening for peers on ", urlStr)
defer func() {
if err != nil {
l.Close()
glog.V(2).Info("etcd: stopping listening for peers on ", urlStr)
}
}()
plns = append(plns, l)
}
if !cfg.clientTLSInfo.Empty() {
glog.V(2).Infof("etcd: clientTLS: %s", cfg.clientTLSInfo)
}
clns := make([]net.Listener, 0)
for _, u := range cfg.lcurls {
l, err := net.Listen("tcp", u.Host)
if err != nil {
return nil, err
}
l, err = transport.NewKeepAliveListener(l, u.Scheme, cfg.clientTLSInfo)
if err != nil {
return nil, err
}
urlStr := u.String()
glog.V(2).Info("etcd: listening for client requests on ", urlStr)
defer func() {
if err != nil {
l.Close()
glog.V(2).Info("etcd: stopping listening for client requests on ", urlStr)
}
}()
clns = append(clns, l)
}
srvcfg := &etcdserver.ServerConfig{
Name: cfg.name,
ClientURLs: cfg.acurls,
PeerURLs: cfg.apurls,
DataDir: cfg.dir,
SnapCount: cfg.snapCount,
MaxSnapFiles: cfg.maxSnapFiles,
InitialPeerURLsMap: initialPeers,
InitialClusterToken: token,
MaxWALFiles: cfg.maxWalFiles,
NewCluster: true,
ForceNewCluster: false,
Transport: pt,
TickMs: cfg.TickMs,
ElectionTicks: cfg.electionTicks(),
}
var s *etcdserver.EtcdServer
s, err = etcdserver.NewServer(srvcfg)
if err != nil {
return nil, err
}
osutil.HandleInterrupts()
s.Start()
osutil.RegisterInterruptHandler(s.Stop)
ch := etcdhttp.NewClientHandler(s, srvcfg.ReqTimeout())
ph := etcdhttp.NewPeerHandler(s.Cluster(), s.RaftHandler())
// Start the peer server in a goroutine
for _, l := range plns {
go func(l net.Listener) {
glog.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
glog.Fatal(serveHTTP(l, ch, 0))
}(l)
}
return s.StopNotify(), nil
}
// 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)
}
pt, err := transport.NewTimeoutTransport(cfg.peerTLSInfo, peerDialTimeout(cfg.ElectionMs), rafthttp.ConnReadTimeout, rafthttp.ConnWriteTimeout)
if err != nil {
return nil, 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 = transport.NewTimeoutListener(u.Host, u.Scheme, cfg.peerTLSInfo, rafthttp.ConnReadTimeout, rafthttp.ConnWriteTimeout)
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 = transport.NewKeepAliveListener(u.Host, u.Scheme, cfg.clientTLSInfo)
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 = netutil.LimitListener(l, int(fdLimit-reservedInternalFDNum))
}
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,
Transport: pt,
TickMs: cfg.TickMs,
ElectionTicks: cfg.electionTicks(),
V3demo: cfg.v3demo,
StrictReconfigCheck: cfg.strictReconfigCheck,
}
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.Cluster(), s.RaftHandler())
// 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
grpcServer := grpc.NewServer()
etcdserverpb.RegisterEtcdServer(grpcServer, v3rpc.New(s))
go plog.Fatal(grpcServer.Serve(v3l))
}
return s.StopNotify(), nil
}
// NewClientHandler generates a muxed http.Handler with the given parameters to serve etcd client requests.
func NewClientHandler(server *etcdserver.EtcdServer, timeout time.Duration) http.Handler {
go capabilityLoop(server)
sec := auth.NewStore(server, timeout)
kh := &keysHandler{
sec: sec,
server: server,
cluster: server.Cluster(),
timer: server,
timeout: timeout,
}
sh := &statsHandler{
stats: server,
}
mh := &membersHandler{
sec: sec,
server: server,
cluster: server.Cluster(),
timeout: timeout,
clock: clockwork.NewRealClock(),
}
dmh := &deprecatedMachinesHandler{
cluster: server.Cluster(),
}
sech := &authHandler{
sec: sec,
cluster: server.Cluster(),
}
mux := http.NewServeMux()
mux.HandleFunc("/", http.NotFound)
mux.Handle(healthPath, healthHandler(server))
mux.HandleFunc(versionPath, versionHandler(server.Cluster(), serveVersion))
mux.Handle(keysPrefix, kh)
mux.Handle(keysPrefix+"/", kh)
mux.HandleFunc(statsPrefix+"/store", sh.serveStore)
mux.HandleFunc(statsPrefix+"/self", sh.serveSelf)
mux.HandleFunc(statsPrefix+"/leader", sh.serveLeader)
mux.HandleFunc(varsPath, serveVars)
mux.HandleFunc(configPath+"/local/log", logHandleFunc)
mux.Handle(metricsPath, prometheus.Handler())
mux.Handle(membersPrefix, mh)
mux.Handle(membersPrefix+"/", mh)
mux.Handle(deprecatedMachinesPrefix, dmh)
handleAuth(mux, sech)
if server.IsPprofEnabled() {
plog.Infof("pprof is enabled under %s", pprofPrefix)
mux.HandleFunc(pprofPrefix, pprof.Index)
mux.HandleFunc(pprofPrefix+"/profile", pprof.Profile)
mux.HandleFunc(pprofPrefix+"/symbol", pprof.Symbol)
mux.HandleFunc(pprofPrefix+"/cmdline", pprof.Cmdline)
// TODO: currently, we don't create an entry for pprof.Trace,
// because go 1.4 doesn't provide it. After support of go 1.4 is dropped,
// we should add the entry.
mux.Handle(pprofPrefix+"/heap", pprof.Handler("heap"))
mux.Handle(pprofPrefix+"/goroutine", pprof.Handler("goroutine"))
mux.Handle(pprofPrefix+"/threadcreate", pprof.Handler("threadcreate"))
mux.Handle(pprofPrefix+"/block", pprof.Handler("block"))
}
return requestLogger(mux)
}
// startEtcd launches the etcd server and HTTP handlers for client/server communication.
func startEtcd(cfg *config) (<-chan struct{}, error) {
urlsmap, token, err := getPeerURLsMapAndToken(cfg)
if err != nil {
return nil, fmt.Errorf("error setting up initial cluster: %v", err)
}
pt, err := transport.NewTimeoutTransport(cfg.peerTLSInfo, rafthttp.DialTimeout, rafthttp.ConnReadTimeout, rafthttp.ConnWriteTimeout)
if err != nil {
return nil, err
}
if !cfg.peerTLSInfo.Empty() {
plog.Infof("peerTLS: %s", cfg.peerTLSInfo)
}
plns := make([]net.Listener, 0)
for _, u := range cfg.lpurls {
var l net.Listener
l, err = transport.NewTimeoutListener(u.Host, u.Scheme, cfg.peerTLSInfo, rafthttp.ConnReadTimeout, rafthttp.ConnWriteTimeout)
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 {
var l net.Listener
l, err = transport.NewKeepAliveListener(u.Host, 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)
}
srvcfg := &etcdserver.ServerConfig{
Name: cfg.name,
ClientURLs: cfg.acurls,
PeerURLs: cfg.apurls,
DataDir: cfg.dir,
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,
Transport: pt,
TickMs: cfg.TickMs,
ElectionTicks: cfg.electionTicks(),
}
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),
Info: cfg.corsInfo,
}
ph := etcdhttp.NewPeerHandler(s.Cluster(), s.RaftHandler())
// 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)
}
return s.StopNotify(), nil
}
