// New Go Routine based server
func RunServer(opts *server.Options) *server.Server {
if opts == nil {
opts = &DefaultTestOptions
}
s := server.New(opts)
if s == nil {
panic("No NATS Server object returned.")
}
// Run server in Go routine.
go s.Start()
// Make sure we are running and can bind before returning.
addr := fmt.Sprintf("%s:%d", opts.Host, opts.Port)
end := time.Now().Add(10 * time.Second)
for time.Now().Before(end) {
conn, err := net.Dial("tcp", addr)
if err != nil {
time.Sleep(50 * time.Millisecond)
// Retry
continue
}
conn.Close()
return s
}
panic("Unable to start NATS Server in Go Routine")
}
// New Go Routine based server
func RunServer(opts *server.Options) *server.Server {
if opts == nil {
opts = &DefaultTestOptions
}
s := server.New(opts)
if s == nil {
panic("No NATS Server object returned.")
}
// Run server in Go routine.
go s.Start()
// Make sure we are running and can bind before returning.
end := time.Now().Add(10 * time.Second)
for time.Now().Before(end) {
addr := s.Addr()
if addr == nil {
time.Sleep(10 * time.Millisecond)
// Retry. We might take a little while to open a connection.
continue
}
conn, err := net.Dial("tcp", addr.String())
if err != nil {
time.Sleep(50 * time.Millisecond)
// Retry
continue
}
conn.Close()
return s
}
panic("Unable to start NATS Server in Go Routine")
}
func main() {
// logging setup
server.LogSetup()
// Server Options
opts := server.Options{}
var showVersion bool
var debugAndTrace bool
var configFile string
// Parse flags
flag.IntVar(&opts.Port, "port", 0, "Port to listen on.")
flag.IntVar(&opts.Port, "p", 0, "Port to listen on.")
flag.StringVar(&opts.Host, "addr", "", "Network host to listen on.")
flag.StringVar(&opts.Host, "a", "", "Network host to listen on.")
flag.StringVar(&opts.Host, "net", "", "Network host to listen on.")
flag.BoolVar(&opts.Debug, "D", false, "Enable Debug logging.")
flag.BoolVar(&opts.Debug, "debug", false, "Enable Debug logging.")
flag.BoolVar(&opts.Trace, "V", false, "Enable Trace logging.")
flag.BoolVar(&opts.Trace, "trace", false, "Enable Trace logging.")
flag.BoolVar(&debugAndTrace, "DV", false, "Enable Debug and Trace logging.")
flag.BoolVar(&opts.Logtime, "T", true, "Timestamp log entries.")
flag.BoolVar(&opts.Logtime, "logtime", true, "Timestamp log entries.")
flag.StringVar(&opts.Username, "user", "", "Username required for connection.")
flag.StringVar(&opts.Password, "pass", "", "Password required for connection.")
flag.StringVar(&opts.Authorization, "auth", "", "Authorization token required for connection.")
flag.IntVar(&opts.HTTPPort, "m", 0, "HTTP Port for /varz, /connz endpoints.")
flag.IntVar(&opts.HTTPPort, "http_port", 0, "HTTP Port for /varz, /connz endpoints.")
flag.StringVar(&configFile, "c", "", "Configuration file.")
flag.StringVar(&configFile, "config", "", "Configuration file.")
flag.StringVar(&opts.PidFile, "P", "", "File to store process pid.")
flag.StringVar(&opts.PidFile, "pid", "", "File to store process pid.")
flag.StringVar(&opts.LogFile, "l", "", "File to store logging output.")
flag.StringVar(&opts.LogFile, "log", "", "File to store logging output.")
flag.BoolVar(&showVersion, "version", false, "Print version information.")
flag.BoolVar(&showVersion, "v", false, "Print version information.")
flag.IntVar(&opts.ProfPort, "profile", 0, "Profiling HTTP port")
flag.Usage = server.Usage
flag.Parse()
// Show version and exit
if showVersion {
server.PrintServerAndExit()
}
// One flag can set multiple options.
if debugAndTrace {
opts.Trace, opts.Debug = true, true
}
// Process args looking for non-flag options,
// 'version' and 'help' only for now
for _, arg := range flag.Args() {
switch strings.ToLower(arg) {
case "version":
server.PrintServerAndExit()
case "help":
server.Usage()
}
}
// Parse config if given
if configFile != "" {
fileOpts, err := server.ProcessConfigFile(configFile)
if err != nil {
server.PrintAndDie(err.Error())
}
opts = *server.MergeOptions(fileOpts, &opts)
}
// Remove any host/ip that points to itself in Route
newroutes, err := server.RemoveSelfReference(opts.ClusterPort, opts.Routes)
if err != nil {
server.PrintAndDie(err.Error())
}
opts.Routes = newroutes
// Create the server with appropriate options.
s := server.New(&opts)
// Start things up. Block here until done.
s.Start()
}