// Start starts the server on the specified port, starts gossip and
// initializes the node using the engines from the server's context.
func (s *Server) Start() error {
tlsConfig, err := s.ctx.GetServerTLSConfig()
if err != nil {
return err
}
httpServer := netutil.MakeServer(s.stopper, tlsConfig, s)
plainRedirectServer := netutil.MakeServer(s.stopper, tlsConfig, http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
// TODO(tamird): s/308/http.StatusPermanentRedirect/ when it exists.
http.Redirect(w, r, "https://"+r.Host+r.RequestURI, 308)
}))
// The following code is a specialization of util/net.go's ListenAndServe
// which adds pgwire support. A single port is used to serve all protocols
// (pg, http, h2) via the following construction:
//
// non-TLS case:
// net.Listen -> cmux.New
// |
// - -> pgwire.Match -> pgwire.Server.ServeConn
// - -> cmux.Any -> grpc.(*Server).Serve
//
// TLS case:
// net.Listen -> cmux.New
// |
// - -> pgwire.Match -> pgwire.Server.ServeConn
// - -> cmux.Any -> grpc.(*Server).Serve
//
// Note that the difference between the TLS and non-TLS cases exists due to
// Go's lack of an h2c (HTTP2 Clear Text) implementation. See inline comments
// in util.ListenAndServe for an explanation of how h2c is implemented there
// and here.
ln, err := net.Listen("tcp", s.ctx.Addr)
if err != nil {
return err
}
unresolvedAddr, err := officialAddr(s.ctx.Addr, ln.Addr())
if err != nil {
return err
}
s.ctx.Addr = unresolvedAddr.String()
s.rpcContext.SetLocalInternalServer(s.node)
s.stopper.RunWorker(func() {
<-s.stopper.ShouldQuiesce()
if err := ln.Close(); err != nil {
log.Fatal(err)
}
})
m := cmux.New(ln)
pgL := m.Match(pgwire.Match)
anyL := m.Match(cmux.Any())
httpLn, err := net.Listen("tcp", s.ctx.HTTPAddr)
if err != nil {
return err
}
unresolvedHTTPAddr, err := officialAddr(s.ctx.HTTPAddr, httpLn.Addr())
if err != nil {
return err
}
s.ctx.HTTPAddr = unresolvedHTTPAddr.String()
s.stopper.RunWorker(func() {
<-s.stopper.ShouldQuiesce()
if err := httpLn.Close(); err != nil {
log.Fatal(err)
}
})
if tlsConfig != nil {
httpMux := cmux.New(httpLn)
clearL := httpMux.Match(cmux.HTTP1())
tlsL := httpMux.Match(cmux.Any())
s.stopper.RunWorker(func() {
netutil.FatalIfUnexpected(httpMux.Serve())
})
s.stopper.RunWorker(func() {
netutil.FatalIfUnexpected(plainRedirectServer.Serve(clearL))
})
httpLn = tls.NewListener(tlsL, tlsConfig)
}
s.stopper.RunWorker(func() {
netutil.FatalIfUnexpected(httpServer.Serve(httpLn))
})
s.stopper.RunWorker(func() {
netutil.FatalIfUnexpected(s.grpc.Serve(anyL))
})
s.stopper.RunWorker(func() {
netutil.FatalIfUnexpected(httpServer.ServeWith(pgL, func(conn net.Conn) {
if err := s.pgServer.ServeConn(conn); err != nil && !netutil.IsClosedConnection(err) {
log.Error(err)
}
}))
})
if len(s.ctx.SocketFile) != 0 {
// Unix socket enabled: postgres protocol only.
unixLn, err := net.Listen("unix", s.ctx.SocketFile)
if err != nil {
return err
}
s.stopper.RunWorker(func() {
<-s.stopper.ShouldQuiesce()
if err := unixLn.Close(); err != nil {
log.Fatal(err)
}
})
s.stopper.RunWorker(func() {
netutil.FatalIfUnexpected(httpServer.ServeWith(unixLn, func(conn net.Conn) {
if err := s.pgServer.ServeConn(conn); err != nil &&
!netutil.IsClosedConnection(err) {
log.Error(err)
}
}))
})
}
s.gossip.Start(s.grpc, unresolvedAddr)
if err := s.node.start(unresolvedAddr, s.ctx.Engines, s.ctx.NodeAttributes); err != nil {
return err
}
// Begin recording runtime statistics.
s.startSampleEnvironment(s.ctx.MetricsSampleInterval)
// Begin recording time series data collected by the status monitor.
s.tsDB.PollSource(s.recorder, s.ctx.MetricsSampleInterval, ts.Resolution10s, s.stopper)
// Begin recording status summaries.
s.node.startWriteSummaries(s.ctx.MetricsSampleInterval)
s.sqlExecutor.SetNodeID(s.node.Descriptor.NodeID)
// Create and start the schema change manager only after a NodeID
// has been assigned.
testingKnobs := new(sql.SchemaChangeManagerTestingKnobs)
if s.ctx.TestingKnobs.SQLSchemaChangeManager != nil {
testingKnobs = s.ctx.TestingKnobs.SQLSchemaChangeManager.(*sql.SchemaChangeManagerTestingKnobs)
}
sql.NewSchemaChangeManager(testingKnobs, *s.db, s.gossip, s.leaseMgr).Start(s.stopper)
log.Infof("starting %s server at %s", s.ctx.HTTPRequestScheme(), unresolvedHTTPAddr)
log.Infof("starting grpc/postgres server at %s", unresolvedAddr)
if len(s.ctx.SocketFile) != 0 {
log.Infof("starting postgres server at unix:%s", s.ctx.SocketFile)
}
s.stopper.RunWorker(func() {
netutil.FatalIfUnexpected(m.Serve())
})
// Initialize grpc-gateway mux and context.
jsonpb := &util.JSONPb{
EnumsAsInts: true,
EmitDefaults: true,
Indent: " ",
}
protopb := new(util.ProtoPb)
gwMux := gwruntime.NewServeMux(
gwruntime.WithMarshalerOption(gwruntime.MIMEWildcard, jsonpb),
gwruntime.WithMarshalerOption(util.JSONContentType, jsonpb),
gwruntime.WithMarshalerOption(util.AltJSONContentType, jsonpb),
gwruntime.WithMarshalerOption(util.ProtoContentType, protopb),
gwruntime.WithMarshalerOption(util.AltProtoContentType, protopb),
)
gwCtx, gwCancel := context.WithCancel(context.Background())
s.stopper.AddCloser(stop.CloserFn(gwCancel))
// Setup HTTP<->gRPC handlers.
var opts []grpc.DialOption
if s.ctx.Insecure {
opts = append(opts, grpc.WithInsecure())
} else {
tlsConfig, err := s.ctx.GetClientTLSConfig()
if err != nil {
return err
}
opts = append(
opts,
// TODO(tamird): remove this timeout. It is currently necessary because
// GRPC will not actually bail on a bad certificate error - it will just
// retry indefinitely. See https://github.com/grpc/grpc-go/issues/622.
grpc.WithTimeout(base.NetworkTimeout),
grpc.WithBlock(),
grpc.WithTransportCredentials(credentials.NewTLS(tlsConfig)),
)
}
conn, err := s.rpcContext.GRPCDial(s.ctx.Addr, opts...)
if err != nil {
return errors.Errorf("error constructing grpc-gateway: %s; are your certificates valid?", err)
}
for _, gw := range []grpcGatewayServer{&s.admin, s.status, &s.tsServer} {
if err := gw.RegisterGateway(gwCtx, gwMux, conn); err != nil {
return err
}
}
var uiFileSystem http.FileSystem
uiDebug := envutil.EnvOrDefaultBool("debug_ui", false)
if uiDebug {
uiFileSystem = http.Dir("ui")
} else {
uiFileSystem = &assetfs.AssetFS{
Asset: ui.Asset,
AssetDir: ui.AssetDir,
AssetInfo: ui.AssetInfo,
}
}
uiFileServer := http.FileServer(uiFileSystem)
s.mux.HandleFunc("/", http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
if r.URL.Path == "/" {
if uiDebug {
r.URL.Path = "debug.html"
} else {
r.URL.Path = "release.html"
}
}
uiFileServer.ServeHTTP(w, r)
}))
// TODO(marc): when cookie-based authentication exists,
// apply it for all web endpoints.
s.mux.HandleFunc(debugEndpoint, http.HandlerFunc(handleDebug))
s.mux.Handle(adminEndpoint, gwMux)
s.mux.Handle(ts.URLPrefix, gwMux)
s.mux.Handle(statusPrefix, s.status)
s.mux.Handle(healthEndpoint, s.status)
if err := sdnotify.Ready(); err != nil {
log.Errorf("failed to signal readiness using systemd protocol: %s", err)
}
return nil
}
func TestMarshalerForRequest(t *testing.T) {
r, err := http.NewRequest("GET", "http://example.com", nil)
if err != nil {
t.Fatalf(`http.NewRequest("GET", "http://example.com", nil) failed with %v; want success`, err)
}
r.Header.Set("Accept", "application/x-out")
r.Header.Set("Content-Type", "application/x-in")
mux := runtime.NewServeMux()
in, out := runtime.MarshalerForRequest(mux, r)
if _, ok := in.(*runtime.JSONPb); !ok {
t.Errorf("in = %#v; want a runtime.JSONPb", in)
}
if _, ok := out.(*runtime.JSONPb); !ok {
t.Errorf("out = %#v; want a runtime.JSONPb", in)
}
var marshalers [3]dummyMarshaler
specs := []struct {
opt runtime.ServeMuxOption
wantIn runtime.Marshaler
wantOut runtime.Marshaler
}{
{
opt: runtime.WithMarshalerOption(runtime.MIMEWildcard, &marshalers[0]),
wantIn: &marshalers[0],
wantOut: &marshalers[0],
},
{
opt: runtime.WithMarshalerOption("application/x-in", &marshalers[1]),
wantIn: &marshalers[1],
wantOut: &marshalers[0],
},
{
opt: runtime.WithMarshalerOption("application/x-out", &marshalers[2]),
wantIn: &marshalers[1],
wantOut: &marshalers[2],
},
}
for i, spec := range specs {
var opts []runtime.ServeMuxOption
for _, s := range specs[:i+1] {
opts = append(opts, s.opt)
}
mux = runtime.NewServeMux(opts...)
in, out = runtime.MarshalerForRequest(mux, r)
if got, want := in, spec.wantIn; got != want {
t.Errorf("in = %#v; want %#v", got, want)
}
if got, want := out, spec.wantOut; got != want {
t.Errorf("out = %#v; want %#v", got, want)
}
}
r.Header.Set("Content-Type", "application/x-another")
in, out = runtime.MarshalerForRequest(mux, r)
if got, want := in, &marshalers[1]; got != want {
t.Errorf("in = %#v; want %#v", got, want)
}
if got, want := out, &marshalers[0]; got != want {
t.Errorf("out = %#v; want %#v", got, want)
}
}