127 lines
3 KiB
Go
127 lines
3 KiB
Go
package main
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import (
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"crypto/tls"
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"errors"
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"fmt"
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"net"
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"time"
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grpcconfig "github.com/nspcc-dev/neofs-node/cmd/neofs-node/config/grpc"
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"github.com/nspcc-dev/neofs-node/pkg/util/logger"
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"go.uber.org/zap"
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"google.golang.org/grpc"
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"google.golang.org/grpc/credentials"
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)
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func initGRPC(c *cfg) {
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var successCount int
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grpcconfig.IterateEndpoints(c.appCfg, func(sc *grpcconfig.Config) {
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serverOpts := []grpc.ServerOption{
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grpc.MaxSendMsgSize(maxMsgSize),
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}
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tlsCfg := sc.TLS()
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if tlsCfg != nil {
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cert, err := tls.LoadX509KeyPair(tlsCfg.CertificateFile(), tlsCfg.KeyFile())
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if err != nil {
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c.log.Error("could not read certificate from file", zap.Error(err))
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return
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}
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var cipherSuites []uint16
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if !tlsCfg.UseInsecureCrypto() {
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// This more or less follows the list in https://wiki.mozilla.org/Security/Server_Side_TLS
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// excluding:
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// 1. TLS 1.3 suites need not be specified here.
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// 2. Suites that use DH key exchange are not implemented by stdlib.
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cipherSuites = []uint16{
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tls.TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
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tls.TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,
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tls.TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,
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tls.TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,
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tls.TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256,
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tls.TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256,
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}
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}
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creds := credentials.NewTLS(&tls.Config{
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MinVersion: tls.VersionTLS12,
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CipherSuites: cipherSuites,
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Certificates: []tls.Certificate{cert},
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})
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serverOpts = append(serverOpts, grpc.Creds(creds))
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}
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lis, err := net.Listen("tcp", sc.Endpoint())
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if err != nil {
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c.log.Error("can't listen gRPC endpoint", zap.Error(err))
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return
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}
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c.cfgGRPC.listeners = append(c.cfgGRPC.listeners, lis)
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srv := grpc.NewServer(serverOpts...)
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c.onShutdown(func() {
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stopGRPC("NeoFS Public API", srv, c.log)
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})
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c.cfgGRPC.servers = append(c.cfgGRPC.servers, srv)
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successCount++
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})
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if successCount == 0 {
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fatalOnErr(errors.New("could not listen to any gRPC endpoints"))
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}
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}
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func serveGRPC(c *cfg) {
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for i := range c.cfgGRPC.servers {
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c.wg.Add(1)
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srv := c.cfgGRPC.servers[i]
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lis := c.cfgGRPC.listeners[i]
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go func() {
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defer func() {
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c.log.Info("stop listening gRPC endpoint",
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zap.String("endpoint", lis.Addr().String()),
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)
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c.wg.Done()
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}()
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c.log.Info("start listening gRPC endpoint",
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zap.String("endpoint", lis.Addr().String()),
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)
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if err := srv.Serve(lis); err != nil {
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fmt.Println("gRPC server error", err)
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}
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}()
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}
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}
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func stopGRPC(name string, s *grpc.Server, l *logger.Logger) {
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l = &logger.Logger{Logger: l.With(zap.String("name", name))}
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l.Info("stopping gRPC server...")
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// GracefulStop() may freeze forever, see #1270
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done := make(chan struct{})
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go func() {
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s.GracefulStop()
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close(done)
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}()
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select {
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case <-done:
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case <-time.After(1 * time.Minute):
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l.Info("gRPC cannot shutdown gracefully, forcing stop")
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s.Stop()
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}
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l.Info("gRPC server stopped successfully")
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}
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