forked from centrifugal/centrifugo
/
main.go
323 lines (288 loc) · 10.8 KB
/
main.go
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package main
import (
"fmt"
"net/http"
"os"
"os/signal"
"runtime"
"strings"
"syscall"
"time"
"github.com/centrifugal/centrifugo/libcentrifugo"
"github.com/centrifugal/centrifugo/libcentrifugo/logger"
"github.com/spf13/cobra"
"github.com/spf13/viper"
)
const (
VERSION = "0.2.3"
)
var configFile string
func setupLogging() {
logLevel, ok := logger.LevelMatches[strings.ToUpper(viper.GetString("log_level"))]
if !ok {
logLevel = logger.LevelInfo
}
logger.SetLogThreshold(logLevel)
logger.SetStdoutThreshold(logLevel)
if viper.IsSet("log_file") && viper.GetString("log_file") != "" {
logger.SetLogFile(viper.GetString("log_file"))
// do not log into stdout when log file provided
logger.SetStdoutThreshold(logger.LevelNone)
}
}
func handleSignals(app *libcentrifugo.Application) {
sigc := make(chan os.Signal, 1)
signal.Notify(sigc, syscall.SIGHUP, syscall.SIGINT, os.Interrupt)
for {
sig := <-sigc
logger.INFO.Println("signal received:", sig)
switch sig {
case syscall.SIGHUP:
// reload application configuration on SIGHUP
// note that you should run checkconfig before reloading configuration
// as Viper exits when encounters parsing errors
logger.INFO.Println("reloading configuration")
err := viper.ReadInConfig()
if err != nil {
logger.CRITICAL.Println("unable to locate config file")
return
}
setupLogging()
c := newConfig()
s := structureFromConfig(nil)
app.SetConfig(c)
app.SetStructure(s)
case syscall.SIGINT, os.Interrupt:
logger.INFO.Println("shutting down")
go time.AfterFunc(5*time.Second, func() {
os.Exit(1)
})
app.Shutdown()
os.Exit(130)
}
}
}
// Main runs Centrifugo as a service.
func Main() {
var port string
var address string
var debug bool
var name string
var web string
var engn string
var logLevel string
var logFile string
var insecure bool
var useSSL bool
var sslCert string
var sslKey string
var redisHost string
var redisPort string
var redisPassword string
var redisDB string
var redisURL string
var redisAPI bool
var redisPool int
var rootCmd = &cobra.Command{
Use: "",
Short: "Centrifugo",
Long: "Centrifuge + GO = Centrifugo – harder, better, faster, stronger",
Run: func(cmd *cobra.Command, args []string) {
viper.SetDefault("gomaxprocs", 0)
viper.SetDefault("prefix", "")
viper.SetDefault("web_password", "")
viper.SetDefault("web_secret", "")
viper.RegisterAlias("cookie_secret", "web_secret")
viper.SetDefault("max_channel_length", 255)
viper.SetDefault("channel_prefix", "centrifugo")
viper.SetDefault("node_ping_interval", 5)
viper.SetDefault("message_send_timeout", 60)
viper.SetDefault("expired_connection_close_delay", 10)
viper.SetDefault("presence_ping_interval", 25)
viper.SetDefault("presence_expire_interval", 60)
viper.SetDefault("private_channel_prefix", "$")
viper.SetDefault("namespace_channel_boundary", ":")
viper.SetDefault("user_channel_boundary", "#")
viper.SetDefault("user_channel_separator", ",")
viper.SetDefault("client_channel_boundary", "&")
viper.SetDefault("sockjs_url", "https://cdn.jsdelivr.net/sockjs/1.0/sockjs.min.js")
viper.SetDefault("project_name", "")
viper.SetDefault("project_secret", "")
viper.SetDefault("project_connection_lifetime", false)
viper.SetDefault("project_watch", false)
viper.SetDefault("project_publish", false)
viper.SetDefault("project_anonymous", false)
viper.SetDefault("project_presence", false)
viper.SetDefault("project_history_size", 0)
viper.SetDefault("project_history_lifetime", 0)
viper.SetDefault("project_namespaces", "")
viper.SetEnvPrefix("centrifugo")
viper.BindEnv("engine")
viper.BindEnv("insecure")
viper.BindEnv("web_password")
viper.BindEnv("web_secret")
viper.BindEnv("project_name")
viper.BindEnv("project_secret")
viper.BindEnv("project_connection_lifetime")
viper.BindEnv("project_watch")
viper.BindEnv("project_publish")
viper.BindEnv("project_anonymous")
viper.BindEnv("project_join_leave")
viper.BindEnv("project_presence")
viper.BindEnv("project_history_size")
viper.BindEnv("project_history_lifetime")
viper.BindPFlag("port", cmd.Flags().Lookup("port"))
viper.BindPFlag("address", cmd.Flags().Lookup("address"))
viper.BindPFlag("debug", cmd.Flags().Lookup("debug"))
viper.BindPFlag("name", cmd.Flags().Lookup("name"))
viper.BindPFlag("web", cmd.Flags().Lookup("web"))
viper.BindPFlag("engine", cmd.Flags().Lookup("engine"))
viper.BindPFlag("insecure", cmd.Flags().Lookup("insecure"))
viper.BindPFlag("ssl", cmd.Flags().Lookup("ssl"))
viper.BindPFlag("ssl_cert", cmd.Flags().Lookup("ssl_cert"))
viper.BindPFlag("ssl_key", cmd.Flags().Lookup("ssl_key"))
viper.BindPFlag("log_level", cmd.Flags().Lookup("log_level"))
viper.BindPFlag("log_file", cmd.Flags().Lookup("log_file"))
viper.BindPFlag("redis_host", cmd.Flags().Lookup("redis_host"))
viper.BindPFlag("redis_port", cmd.Flags().Lookup("redis_port"))
viper.BindPFlag("redis_password", cmd.Flags().Lookup("redis_password"))
viper.BindPFlag("redis_db", cmd.Flags().Lookup("redis_db"))
viper.BindPFlag("redis_url", cmd.Flags().Lookup("redis_url"))
viper.BindPFlag("redis_api", cmd.Flags().Lookup("redis_api"))
viper.BindPFlag("redis_pool", cmd.Flags().Lookup("redis_pool"))
err := validateConfig(configFile)
if err != nil {
logger.FATAL.Fatalln(err)
}
viper.SetConfigFile(configFile)
err = viper.ReadInConfig()
if err != nil {
logger.FATAL.Fatalln("unable to locate config file")
}
setupLogging()
if os.Getenv("GOMAXPROCS") == "" {
if viper.IsSet("gomaxprocs") && viper.GetInt("gomaxprocs") > 0 {
runtime.GOMAXPROCS(viper.GetInt("gomaxprocs"))
} else {
runtime.GOMAXPROCS(runtime.NumCPU())
}
}
logger.INFO.Println("GOMAXPROCS set to", runtime.GOMAXPROCS(0))
logger.INFO.Println("using config file:", viper.ConfigFileUsed())
c := newConfig()
s := structureFromConfig(nil)
app, err := libcentrifugo.NewApplication(c)
if err != nil {
logger.FATAL.Fatalln(err)
}
app.SetStructure(s)
var e libcentrifugo.Engine
switch viper.GetString("engine") {
case "memory":
e = libcentrifugo.NewMemoryEngine(app)
case "redis":
e = libcentrifugo.NewRedisEngine(
app,
viper.GetString("redis_host"),
viper.GetString("redis_port"),
viper.GetString("redis_password"),
viper.GetString("redis_db"),
viper.GetString("redis_url"),
viper.GetBool("redis_api"),
viper.GetInt("redis_pool"),
)
default:
logger.FATAL.Fatalln("unknown engine: " + viper.GetString("engine"))
}
logger.INFO.Println("engine:", viper.GetString("engine"))
logger.DEBUG.Printf("%v\n", viper.AllSettings())
logger.INFO.Println("Use SSL:", viper.GetBool("ssl"))
if viper.GetBool("ssl") {
if viper.GetString("ssl_cert") == "" {
logger.FATAL.Println("No SSL certificate provided")
os.Exit(1)
}
if viper.GetString("ssl_key") == "" {
logger.FATAL.Println("No SSL certificate key provided")
os.Exit(1)
}
}
app.SetEngine(e)
app.Run()
go handleSignals(app)
mux := libcentrifugo.DefaultMux(app, viper.GetString("prefix"), viper.GetString("web"), viper.GetString("sockjs_url"))
addr := viper.GetString("address") + ":" + viper.GetString("port")
logger.INFO.Printf("start serving on %s\n", addr)
if useSSL {
if err := http.ListenAndServeTLS(addr, sslCert, sslKey, mux); err != nil {
logger.FATAL.Fatalln("ListenAndServe:", err)
}
} else {
if err := http.ListenAndServe(addr, mux); err != nil {
logger.FATAL.Fatalln("ListenAndServe:", err)
}
}
},
}
rootCmd.Flags().StringVarP(&port, "port", "p", "8000", "port to bind to")
rootCmd.Flags().StringVarP(&address, "address", "a", "", "address to listen on")
rootCmd.Flags().BoolVarP(&debug, "debug", "d", false, "debug mode - please, do not use it in production")
rootCmd.Flags().StringVarP(&configFile, "config", "c", "config.json", "path to config file")
rootCmd.Flags().StringVarP(&name, "name", "n", "", "unique node name")
rootCmd.Flags().StringVarP(&web, "web", "w", "", "optional path to web interface application")
rootCmd.Flags().StringVarP(&engn, "engine", "e", "memory", "engine to use: memory or redis")
rootCmd.Flags().BoolVarP(&insecure, "insecure", "", false, "start in insecure mode")
rootCmd.Flags().BoolVarP(&useSSL, "ssl", "", false, "accept SSL connections. This requires an X509 certificate and a key file")
rootCmd.Flags().StringVarP(&sslCert, "ssl_cert", "", "", "path to an X509 certificate file")
rootCmd.Flags().StringVarP(&sslKey, "ssl_key", "", "", "path to an X509 certificate key")
rootCmd.Flags().StringVarP(&logLevel, "log_level", "", "info", "set the log level: debug, info, error, critical, fatal or none")
rootCmd.Flags().StringVarP(&logFile, "log_file", "", "", "optional log file - if not specified all logs go to STDOUT")
rootCmd.Flags().StringVarP(&redisHost, "redis_host", "", "127.0.0.1", "redis host (Redis engine)")
rootCmd.Flags().StringVarP(&redisPort, "redis_port", "", "6379", "redis port (Redis engine)")
rootCmd.Flags().StringVarP(&redisPassword, "redis_password", "", "", "redis auth password (Redis engine)")
rootCmd.Flags().StringVarP(&redisDB, "redis_db", "", "0", "redis database (Redis engine)")
rootCmd.Flags().StringVarP(&redisURL, "redis_url", "", "", "redis connection URL (Redis engine)")
rootCmd.Flags().BoolVarP(&redisAPI, "redis_api", "", false, "enable Redis API listener (Redis engine)")
rootCmd.Flags().IntVarP(&redisPool, "redis_pool", "", 256, "Redis pool size (Redis engine)")
var versionCmd = &cobra.Command{
Use: "version",
Short: "Centrifugo version number",
Long: `Print the version number of Centrifugo`,
Run: func(cmd *cobra.Command, args []string) {
fmt.Printf("Centrifugo v%s\n", VERSION)
},
}
var checkConfigFile string
var checkConfigCmd = &cobra.Command{
Use: "checkconfig",
Short: "Check configuration file",
Long: `Check Centrifugo configuration file`,
Run: func(cmd *cobra.Command, args []string) {
err := validateConfig(checkConfigFile)
if err != nil {
logger.FATAL.Fatalln(err)
}
},
}
checkConfigCmd.Flags().StringVarP(&checkConfigFile, "config", "c", "config.json", "path to config file to check")
var outputConfigFile string
var generateConfigCmd = &cobra.Command{
Use: "genconfig",
Short: "Generate simple configuration file to start with",
Long: `Generate simple configuration file to start with`,
Run: func(cmd *cobra.Command, args []string) {
err := generateConfig(outputConfigFile)
if err != nil {
logger.FATAL.Fatalln(err)
}
},
}
generateConfigCmd.Flags().StringVarP(&outputConfigFile, "config", "c", "config.json", "path to output config file")
rootCmd.AddCommand(versionCmd)
rootCmd.AddCommand(checkConfigCmd)
rootCmd.AddCommand(generateConfigCmd)
rootCmd.Execute()
}
func main() {
Main()
}