func (p *program) Start() error {
flagSet := nsqFlagset()
flagSet.Parse(os.Args[1:])
rand.Seed(time.Now().UTC().UnixNano())
if flagSet.Lookup("version").Value.(flag.Getter).Get().(bool) {
fmt.Println(version.String("nsqd"))
os.Exit(0)
}
var cfg config
configFile := flagSet.Lookup("config").Value.String()
if configFile != "" {
_, err := toml.DecodeFile(configFile, &cfg)
if err != nil {
log.Fatalf("ERROR: failed to load config file %s - %s", configFile, err.Error())
}
}
cfg.Validate()
opts := nsqd.NewOptions()
options.Resolve(opts, flagSet, cfg)
nsqd := nsqd.New(opts)
nsqd.LoadMetadata()
err := nsqd.PersistMetadata()
if err != nil {
log.Fatalf("ERROR: failed to persist metadata - %s", err.Error())
}
nsqd.Main()
p.nsqd = nsqd
return nil
}
func (p *program) Start() error {
//解析用户输入的命令
flagSet := nsqFlagset()
flagSet.Parse(os.Args[1:])
rand.Seed(time.Now().UTC().UnixNano())
//输出版本号并结束
if flagSet.Lookup("version").Value.(flag.Getter).Get().(bool) {
fmt.Println(version.String("nsqd"))
os.Exit(0)
}
//读取配置文件
var cfg config
configFile := flagSet.Lookup("config").Value.String()
if configFile != "" {
_, err := toml.DecodeFile(configFile, &cfg)
if err != nil {
log.Fatalf("ERROR: failed to load config file %s - %s", configFile, err.Error())
}
}
//验证配置文件
cfg.Validate()
//载入默认配置选项
opts := nsqd.NewOptions()
//整合配置选项(优先级:--???--)
options.Resolve(opts, flagSet, cfg)
//建立服务(载入基本配置)
nsqd := nsqd.New(opts)
//启动服务前 恢复数据(从硬盘载入数据)
nsqd.LoadMetadata()
//将内存中的数据写入到硬盘文件中 (创建新文件 保留旧文件--???--)
err := nsqd.PersistMetadata()
if err != nil {
log.Fatalf("ERROR: failed to persist metadata - %s", err.Error())
}
nsqd.Main()
p.nsqd = nsqd
return nil
}
func main() {
flagSet := nsqFlagset()
flagSet.Parse(os.Args[1:])
rand.Seed(time.Now().UTC().UnixNano())
if flagSet.Lookup("version").Value.(flag.Getter).Get().(bool) {
fmt.Println(version.String("nsqd"))
return
}
signalChan := make(chan os.Signal, 1)
signal.Notify(signalChan, syscall.SIGINT, syscall.SIGTERM)
var cfg config
configFile := flagSet.Lookup("config").Value.String()
if configFile != "" {
_, err := toml.DecodeFile(configFile, &cfg)
if err != nil {
log.Fatalf("ERROR: failed to load config file %s - %s", configFile, err.Error())
}
}
cfg.Validate()
opts := nsqd.NewOptions()
options.Resolve(opts, flagSet, cfg)
nsqd := nsqd.New(opts)
nsqd.LoadMetadata()
err := nsqd.PersistMetadata()
if err != nil {
log.Fatalf("ERROR: failed to persist metadata - %s", err.Error())
}
nsqd.Main()
<-signalChan
nsqd.Exit()
}
// MAIN
func main() {
var err error
app := cli.NewApp()
app.Name = "tmail"
app.Usage = "SMTP server"
app.Author = "Stéphane Depierrepont aka toorop"
app.Email = "*****@*****.**"
app.Version = TmailVersion
app.Commands = tcli.CliCommands
// no know command ? Launch server
app.Action = func(c *cli.Context) {
if len(c.Args()) != 0 {
cli.ShowAppHelp(c)
} else {
// if there is nothing to do then... do nothing
if !core.Cfg.GetLaunchDeliverd() && !core.Cfg.GetLaunchSmtpd() {
log.Fatalln("I have nothing to do, so i do nothing. Bye.")
}
// Init Bolt (used as cache)
if err = core.InitBolt(); err != nil {
log.Fatalln("Init bolt failed", err)
}
// Loop
sigChan := make(chan os.Signal, 1)
signal.Notify(sigChan, syscall.SIGINT, syscall.SIGTERM)
// TODO
// Chanel to comunicate between all elements
//daChan := make(chan string)
// init and launch nsqd
opts := nsqd.NewOptions()
opts.Logger = log.New(ioutil.Discard, "", 0)
if core.Cfg.GetDebugEnabled() {
opts.Logger = core.Log
}
opts.Verbose = core.Cfg.GetDebugEnabled()
opts.DataPath = core.GetBasePath() + "/nsq"
// if cluster get lookupd addresses
if core.Cfg.GetClusterModeEnabled() {
opts.NSQLookupdTCPAddresses = core.Cfg.GetNSQLookupdTcpAddresses()
}
// deflate (compression)
opts.DeflateEnabled = true
// if a message timeout it returns to the queue: https://groups.google.com/d/msg/nsq-users/xBQF1q4srUM/kX22TIoIs-QJ
// msg timeout : base time to wait from consummer before requeuing a message
// note: deliverd consumer return immediatly (message is handled in a go routine)
// Ce qui est au dessus est faux malgres la go routine il attends toujours a la réponse
// et c'est normal car le message est toujours "in flight"
// En fait ce timeout c'est le temps durant lequel le message peut rester dans le state "in flight"
// autrement dit c'est le temps maxi que peu prendre deliverd.processMsg
opts.MsgTimeout = 10 * time.Minute
// maximum duration before a message will timeout
opts.MaxMsgTimeout = 15 * time.Hour
// maximum requeuing timeout for a message
// si le client ne demande pas de requeue dans ce delais alors
// le message et considéré comme traité
opts.MaxReqTimeout = 1 * time.Hour
// Number of message in RAM before synching to disk
opts.MemQueueSize = 0
nsqd := nsqd.New(opts)
nsqd.LoadMetadata()
if err = nsqd.PersistMetadata(); err != nil {
log.Fatalf("ERROR: failed to persist metadata - %s", err.Error())
}
nsqd.Main()
// smtpd
if core.Cfg.GetLaunchSmtpd() {
// clamav ?
if core.Cfg.GetSmtpdClamavEnabled() {
if err = core.NewClamav().Ping(); err != nil {
log.Fatalln("Unable to connect to clamd -", err)
}
}
smtpdDsns, err := core.GetDsnsFromString(core.Cfg.GetSmtpdDsns())
if err != nil {
log.Fatalln("unable to parse smtpd dsn -", err)
}
for _, dsn := range smtpdDsns {
go core.NewSmtpd(dsn).ListenAndServe()
// TODO at this point we don't know if serveur is launched
core.Log.Info("smtpd " + dsn.String() + " launched.")
}
}
// deliverd
go core.LaunchDeliverd()
// HTTP REST server
if core.Cfg.GetRestServerLaunch() {
go rest.LaunchServer()
}
<-sigChan
core.Log.Info("Exiting...")
// close NsqQueueProducer if exists
core.NsqQueueProducer.Stop()
// flush nsqd memory to disk
nsqd.Exit()
// exit
os.Exit(0)
}
}
app.Run(os.Args)
}