|
| 1 | +package cmd |
| 2 | + |
| 3 | +import ( |
| 4 | + "os" |
| 5 | + "os/signal" |
| 6 | + "syscall" |
| 7 | + "time" |
| 8 | + |
| 9 | + "github.com/gatewayd-io/gatewayd/logging" |
| 10 | + "github.com/gatewayd-io/gatewayd/network" |
| 11 | + "github.com/panjf2000/gnet/v2" |
| 12 | + "github.com/rs/zerolog" |
| 13 | + "github.com/spf13/cobra" |
| 14 | +) |
| 15 | + |
| 16 | +const ( |
| 17 | + DefaultTCPKeepAlive = 3 * time.Second |
| 18 | +) |
| 19 | + |
| 20 | +// runCmd represents the run command. |
| 21 | +var runCmd = &cobra.Command{ |
| 22 | + Use: "run", |
| 23 | + Short: "Run a gatewayd instance", |
| 24 | + Run: func(cmd *cobra.Command, args []string) { |
| 25 | + // Create a logger |
| 26 | + logger := logging.NewLogger(nil, zerolog.TimeFormatUnix, zerolog.InfoLevel, true) |
| 27 | + |
| 28 | + // Create a pool |
| 29 | + pool := network.NewPool(logger) |
| 30 | + |
| 31 | + // Add a client to the pool |
| 32 | + for i := 0; i < network.DefaultPoolSize; i++ { |
| 33 | + client := network.NewClient("tcp", "localhost:5432", network.DefaultBufferSize, logger) |
| 34 | + if client != nil { |
| 35 | + if err := pool.Put(client); err != nil { |
| 36 | + logger.Panic().Err(err).Msg("Failed to add client to pool") |
| 37 | + } |
| 38 | + } |
| 39 | + } |
| 40 | + |
| 41 | + // Verify that the pool is properly populated |
| 42 | + logger.Debug().Msgf("There are %d clients in the pool", len(pool.ClientIDs())) |
| 43 | + if len(pool.ClientIDs()) != network.DefaultPoolSize { |
| 44 | + logger.Error().Msg( |
| 45 | + "The pool size is incorrect, either because " + |
| 46 | + "the clients are cannot connect (no network connectivity) " + |
| 47 | + "or the server is not running. Exiting...") |
| 48 | + os.Exit(1) |
| 49 | + } |
| 50 | + |
| 51 | + // Create a prefork proxy with the pool of clients |
| 52 | + proxy := network.NewProxy(pool, false, false, &network.Client{ |
| 53 | + Network: "tcp", |
| 54 | + Address: "localhost:5432", |
| 55 | + ReceiveBufferSize: network.DefaultBufferSize, |
| 56 | + }, logger) |
| 57 | + |
| 58 | + // Create a server |
| 59 | + server := network.NewServer( |
| 60 | + "tcp", |
| 61 | + "0.0.0.0:15432", |
| 62 | + 0, |
| 63 | + 0, |
| 64 | + network.DefaultTickInterval, |
| 65 | + []gnet.Option{ |
| 66 | + // Scheduling options |
| 67 | + gnet.WithMulticore(true), |
| 68 | + gnet.WithLockOSThread(false), |
| 69 | + // NumEventLoop overrides Multicore option. |
| 70 | + // gnet.WithNumEventLoop(1), |
| 71 | + |
| 72 | + // Can be used to send keepalive messages to the client. |
| 73 | + gnet.WithTicker(false), |
| 74 | + |
| 75 | + // Internal event-loop load balancing options |
| 76 | + gnet.WithLoadBalancing(gnet.RoundRobin), |
| 77 | + |
| 78 | + // Logger options |
| 79 | + // TODO: This is a temporary solution and will be replaced. |
| 80 | + // gnet.WithLogger(logrus.New()), |
| 81 | + // gnet.WithLogPath("./gnet.log"), |
| 82 | + // gnet.WithLogLevel(zapcore.DebugLevel), |
| 83 | + |
| 84 | + // Buffer options |
| 85 | + // TODO: This should be configurable and optimized. |
| 86 | + gnet.WithReadBufferCap(network.DefaultBufferSize), |
| 87 | + gnet.WithWriteBufferCap(network.DefaultBufferSize), |
| 88 | + gnet.WithSocketRecvBuffer(network.DefaultBufferSize), |
| 89 | + gnet.WithSocketSendBuffer(network.DefaultBufferSize), |
| 90 | + |
| 91 | + // TCP options |
| 92 | + gnet.WithReuseAddr(true), |
| 93 | + gnet.WithReusePort(true), |
| 94 | + gnet.WithTCPKeepAlive(DefaultTCPKeepAlive), |
| 95 | + gnet.WithTCPNoDelay(gnet.TCPNoDelay), |
| 96 | + }, |
| 97 | + nil, |
| 98 | + nil, |
| 99 | + proxy, |
| 100 | + logger, |
| 101 | + ) |
| 102 | + |
| 103 | + // Shutdown the server gracefully |
| 104 | + var signals []os.Signal |
| 105 | + signals = append(signals, |
| 106 | + os.Interrupt, |
| 107 | + os.Kill, |
| 108 | + syscall.SIGTERM, |
| 109 | + syscall.SIGABRT, |
| 110 | + syscall.SIGQUIT, |
| 111 | + syscall.SIGHUP, |
| 112 | + syscall.SIGINT, |
| 113 | + ) |
| 114 | + signalsCh := make(chan os.Signal, 1) |
| 115 | + signal.Notify(signalsCh, signals...) |
| 116 | + go func() { |
| 117 | + for sig := range signalsCh { |
| 118 | + for _, s := range signals { |
| 119 | + if sig != s { |
| 120 | + server.Shutdown() |
| 121 | + os.Exit(0) |
| 122 | + } |
| 123 | + } |
| 124 | + } |
| 125 | + }() |
| 126 | + |
| 127 | + // Run the server |
| 128 | + if err := server.Run(); err != nil { |
| 129 | + logger.Error().Err(err).Msg("Failed to start server") |
| 130 | + } |
| 131 | + }, |
| 132 | +} |
| 133 | + |
| 134 | +func init() { |
| 135 | + rootCmd.AddCommand(runCmd) |
| 136 | +} |
0 commit comments