func run() {
fmtlog.SetFlags(fmtlog.Lshortfile | fmtlog.LstdFlags)
// load global configuration
globalConfiguration := LoadConfiguration()
loggerMiddleware := middlewares.NewLogger(globalConfiguration.AccessLogsFile)
defer loggerMiddleware.Close()
// logging
level, err := log.ParseLevel(strings.ToLower(globalConfiguration.LogLevel))
if err != nil {
log.Fatal("Error getting level", err)
}
log.SetLevel(level)
if len(globalConfiguration.TraefikLogsFile) > 0 {
fi, err := os.OpenFile(globalConfiguration.TraefikLogsFile, os.O_RDWR|os.O_CREATE|os.O_APPEND, 0666)
defer fi.Close()
if err != nil {
log.Fatal("Error opening file", err)
} else {
log.SetOutput(fi)
log.SetFormatter(&log.TextFormatter{DisableColors: true, FullTimestamp: true, DisableSorting: true})
}
} else {
log.SetFormatter(&log.TextFormatter{FullTimestamp: true, DisableSorting: true})
}
log.Debugf("Global configuration loaded %+v", globalConfiguration)
server := NewServer(*globalConfiguration)
server.Start()
defer server.Close()
log.Info("Shutting down")
}
// NewServer returns an initialized Server.
func NewServer(globalConfiguration GlobalConfiguration) *Server {
server := new(Server)
server.configurationChan = make(chan types.ConfigMessage, 10)
server.configurationChanValidated = make(chan types.ConfigMessage, 10)
server.sigs = make(chan os.Signal, 1)
server.stopChan = make(chan bool)
server.providers = []provider.Provider{}
signal.Notify(server.sigs, syscall.SIGINT, syscall.SIGTERM)
server.currentConfigurations = make(configs)
server.globalConfiguration = globalConfiguration
server.loggerMiddleware = middlewares.NewLogger(globalConfiguration.AccessLogsFile)
return server
}
func main() {
runtime.GOMAXPROCS(runtime.NumCPU())
kingpin.Version(Version + " built on the " + BuildDate)
kingpin.Parse()
fmtlog.SetFlags(fmtlog.Lshortfile | fmtlog.LstdFlags)
var srv *manners.GracefulServer
var configurationRouter *mux.Router
var configurationChan = make(chan types.ConfigMessage, 10)
defer close(configurationChan)
var configurationChanValidated = make(chan types.ConfigMessage, 10)
defer close(configurationChanValidated)
var sigs = make(chan os.Signal, 1)
defer close(sigs)
var stopChan = make(chan bool)
defer close(stopChan)
var providers = []provider.Provider{}
signal.Notify(sigs, syscall.SIGINT, syscall.SIGTERM)
var serverLock sync.Mutex
// load global configuration
globalConfiguration := LoadFileConfig(*globalConfigFile)
loggerMiddleware := middlewares.NewLogger(globalConfiguration.AccessLogsFile)
defer loggerMiddleware.Close()
// logging
level, err := log.ParseLevel(strings.ToLower(globalConfiguration.LogLevel))
if err != nil {
log.Fatal("Error getting level", err)
}
log.SetLevel(level)
if len(globalConfiguration.TraefikLogsFile) > 0 {
fi, err := os.OpenFile(globalConfiguration.TraefikLogsFile, os.O_RDWR|os.O_CREATE|os.O_APPEND, 0666)
defer fi.Close()
if err != nil {
log.Fatal("Error opening file", err)
} else {
log.SetOutput(fi)
log.SetFormatter(&log.TextFormatter{DisableColors: true, FullTimestamp: true, DisableSorting: true})
}
} else {
log.SetFormatter(&log.TextFormatter{FullTimestamp: true, DisableSorting: true})
}
log.Debugf("Global configuration loaded %+v", globalConfiguration)
configurationRouter = LoadDefaultConfig(globalConfiguration)
// listen new configurations from providers
go func() {
lastReceivedConfiguration := time.Unix(0, 0)
lastConfigs := make(map[string]*types.ConfigMessage)
for {
configMsg := <-configurationChan
log.Infof("Configuration receveived from provider %s: %#v", configMsg.ProviderName, configMsg.Configuration)
lastConfigs[configMsg.ProviderName] = &configMsg
if time.Now().After(lastReceivedConfiguration.Add(time.Duration(globalConfiguration.ProvidersThrottleDuration))) {
log.Infof("Last %s config received more than %s, OK", configMsg.ProviderName, globalConfiguration.ProvidersThrottleDuration)
// last config received more than n s ago
configurationChanValidated <- configMsg
} else {
log.Infof("Last %s config received less than %s, waiting...", configMsg.ProviderName, globalConfiguration.ProvidersThrottleDuration)
go func() {
<-time.After(globalConfiguration.ProvidersThrottleDuration)
if time.Now().After(lastReceivedConfiguration.Add(time.Duration(globalConfiguration.ProvidersThrottleDuration))) {
log.Infof("Waited for %s config, OK", configMsg.ProviderName)
configurationChanValidated <- *lastConfigs[configMsg.ProviderName]
}
}()
}
lastReceivedConfiguration = time.Now()
}
}()
go func() {
for {
configMsg := <-configurationChanValidated
if configMsg.Configuration == nil {
log.Info("Skipping empty Configuration")
} else if reflect.DeepEqual(currentConfigurations[configMsg.ProviderName], configMsg.Configuration) {
log.Info("Skipping same configuration")
} else {
// Copy configurations to new map so we don't change current if LoadConfig fails
newConfigurations := make(configs)
for k, v := range currentConfigurations {
newConfigurations[k] = v
}
newConfigurations[configMsg.ProviderName] = configMsg.Configuration
newConfigurationRouter, err := LoadConfig(newConfigurations, globalConfiguration)
if err == nil {
serverLock.Lock()
currentConfigurations = newConfigurations
configurationRouter = newConfigurationRouter
oldServer := srv
newsrv, err := prepareServer(configurationRouter, globalConfiguration, oldServer, loggerMiddleware, metrics)
if err != nil {
log.Fatal("Error preparing server: ", err)
}
go startServer(newsrv, globalConfiguration)
srv = newsrv
time.Sleep(1 * time.Second)
if oldServer != nil {
log.Info("Stopping old server")
oldServer.Close()
}
serverLock.Unlock()
} else {
log.Error("Error loading new configuration, aborted ", err)
}
}
}
}()
// configure providers
if globalConfiguration.Docker != nil {
providers = append(providers, globalConfiguration.Docker)
}
if globalConfiguration.Marathon != nil {
providers = append(providers, globalConfiguration.Marathon)
}
if globalConfiguration.File != nil {
if len(globalConfiguration.File.Filename) == 0 {
// no filename, setting to global config file
globalConfiguration.File.Filename = *globalConfigFile
}
providers = append(providers, globalConfiguration.File)
}
if globalConfiguration.Web != nil {
providers = append(providers, globalConfiguration.Web)
}
if globalConfiguration.Consul != nil {
providers = append(providers, globalConfiguration.Consul)
}
if globalConfiguration.Etcd != nil {
providers = append(providers, globalConfiguration.Etcd)
}
if globalConfiguration.Zookeeper != nil {
providers = append(providers, globalConfiguration.Zookeeper)
}
if globalConfiguration.Boltdb != nil {
providers = append(providers, globalConfiguration.Boltdb)
}
// start providers
for _, provider := range providers {
log.Infof("Starting provider %v %+v", reflect.TypeOf(provider), provider)
currentProvider := provider
go func() {
err := currentProvider.Provide(configurationChan)
if err != nil {
log.Errorf("Error starting provider %s", err)
}
}()
}
go func() {
sig := <-sigs
log.Infof("I have to go... %+v", sig)
log.Info("Stopping server")
srv.Close()
stopChan <- true
}()
//negroni.Use(middlewares.NewCircuitBreaker(oxyLogger))
//negroni.Use(middlewares.NewRoutes(configurationRouter))
var er error
serverLock.Lock()
srv, er = prepareServer(configurationRouter, globalConfiguration, nil, loggerMiddleware, metrics)
if er != nil {
log.Fatal("Error preparing server: ", er)
}
go startServer(srv, globalConfiguration)
//TODO change that!
time.Sleep(100 * time.Millisecond)
serverLock.Unlock()
<-stopChan
log.Info("Shutting down")
}
func main() {
runtime.GOMAXPROCS(runtime.NumCPU())
kingpin.Parse()
fmtlog.SetFlags(fmtlog.Lshortfile | fmtlog.LstdFlags)
var srv *manners.GracefulServer
var configurationRouter *mux.Router
var configurationChan = make(chan configMessage, 10)
defer close(configurationChan)
var sigs = make(chan os.Signal, 1)
defer close(sigs)
var stopChan = make(chan bool)
defer close(stopChan)
var providers = []Provider{}
signal.Notify(sigs, syscall.SIGINT, syscall.SIGTERM)
// load global configuration
globalConfiguration := LoadFileConfig(*globalConfigFile)
loggerMiddleware := middlewares.NewLogger(globalConfiguration.AccessLogsFile)
defer loggerMiddleware.Close()
// logging
level, err := log.ParseLevel(strings.ToLower(globalConfiguration.LogLevel))
if err != nil {
log.Fatal("Error getting level", err)
}
log.SetLevel(level)
if len(globalConfiguration.TraefikLogsFile) > 0 {
fi, err := os.OpenFile(globalConfiguration.TraefikLogsFile, os.O_RDWR|os.O_CREATE|os.O_APPEND, 0666)
defer fi.Close()
if err != nil {
log.Fatal("Error opening file", err)
} else {
log.SetOutput(fi)
log.SetFormatter(&log.TextFormatter{DisableColors: true, FullTimestamp: true, DisableSorting: true})
}
} else {
log.SetFormatter(&log.TextFormatter{FullTimestamp: true, DisableSorting: true})
}
configurationRouter = LoadDefaultConfig(globalConfiguration)
// listen new configurations from providers
go func() {
for {
configMsg := <-configurationChan
log.Infof("Configuration receveived from provider %v: %+v", configMsg.providerName, configMsg.configuration)
if configMsg.configuration == nil {
log.Info("Skipping empty configuration")
} else if reflect.DeepEqual(currentConfigurations[configMsg.providerName], configMsg.configuration) {
log.Info("Skipping same configuration")
} else {
// Copy configurations to new map so we don't change current if LoadConfig fails
newConfigurations := make(configs)
for k, v := range currentConfigurations {
newConfigurations[k] = v
}
newConfigurations[configMsg.providerName] = configMsg.configuration
newConfigurationRouter, err := LoadConfig(newConfigurations, globalConfiguration)
if err == nil {
currentConfigurations = newConfigurations
configurationRouter = newConfigurationRouter
oldServer := srv
newsrv := prepareServer(configurationRouter, globalConfiguration, oldServer, loggerMiddleware, metrics)
go startServer(newsrv, globalConfiguration)
srv = newsrv
time.Sleep(2 * time.Second)
if oldServer != nil {
log.Info("Stopping old server")
oldServer.Close()
}
} else {
log.Error("Error loading new configuration, aborted ", err)
}
}
}
}()
// configure providers
if globalConfiguration.Docker != nil {
providers = append(providers, globalConfiguration.Docker)
}
if globalConfiguration.Marathon != nil {
providers = append(providers, globalConfiguration.Marathon)
}
if globalConfiguration.File != nil {
if len(globalConfiguration.File.Filename) == 0 {
// no filename, setting to global config file
globalConfiguration.File.Filename = *globalConfigFile
}
providers = append(providers, globalConfiguration.File)
}
if globalConfiguration.Web != nil {
providers = append(providers, globalConfiguration.Web)
}
if globalConfiguration.Consul != nil {
providers = append(providers, globalConfiguration.Consul)
}
// start providers
for _, provider := range providers {
log.Infof("Starting provider %v %+v", reflect.TypeOf(provider), provider)
currentProvider := provider
go func() {
currentProvider.Provide(configurationChan)
}()
}
go func() {
sig := <-sigs
log.Infof("I have to go... %+v", sig)
log.Info("Stopping server")
srv.Close()
stopChan <- true
}()
//negroni.Use(middlewares.NewCircuitBreaker(oxyLogger))
//negroni.Use(middlewares.NewRoutes(configurationRouter))
srv = prepareServer(configurationRouter, globalConfiguration, nil, loggerMiddleware, metrics)
go startServer(srv, globalConfiguration)
<-stopChan
log.Info("Shutting down")
}
func main() {
kingpin.Parse()
fmtlog.SetFlags(fmtlog.Lshortfile | fmtlog.LstdFlags)
var srv *graceful.Server
var configurationRouter *mux.Router
var configurationChan = make(chan *Configuration, 10)
defer close(configurationChan)
var providers = []Provider{}
var format = logging.MustStringFormatter("%{color}%{time:15:04:05.000} %{shortfile:20.20s} %{level:8.8s} %{id:03x} ▶%{color:reset} %{message}")
var sigs = make(chan os.Signal, 1)
signal.Notify(sigs, syscall.SIGINT, syscall.SIGTERM)
// load global configuration
gloablConfiguration := LoadFileConfig(*globalConfigFile)
loggerMiddleware := middlewares.NewLogger(gloablConfiguration.AccessLogsFile)
defer loggerMiddleware.Close()
// logging
backends := []logging.Backend{}
level, err := logging.LogLevel(gloablConfiguration.LogLevel)
if err != nil {
log.Fatal("Error getting level", err)
}
if len(gloablConfiguration.TraefikLogsFile) > 0 {
fi, err := os.OpenFile(gloablConfiguration.TraefikLogsFile, os.O_RDWR|os.O_CREATE|os.O_APPEND, 0666)
defer fi.Close()
if err != nil {
log.Fatal("Error opening file", err)
} else {
logBackend := logging.NewLogBackend(fi, "", 0)
logBackendFormatter := logging.NewBackendFormatter(logBackend, logging.GlogFormatter)
backends = append(backends, logBackendFormatter)
}
}
if gloablConfiguration.TraefikLogsStdout {
logBackend := logging.NewLogBackend(os.Stdout, "", 0)
logBackendFormatter := logging.NewBackendFormatter(logBackend, format)
backends = append(backends, logBackendFormatter)
}
logging.SetBackend(backends...)
logging.SetLevel(level, "traefik")
configurationRouter = LoadDefaultConfig(gloablConfiguration)
// listen new configurations from providers
go func() {
for {
configuration := <-configurationChan
log.Info("Configuration receveived %+v", configuration)
if configuration == nil {
log.Info("Skipping empty configuration")
} else if reflect.DeepEqual(currentConfiguration, configuration) {
log.Info("Skipping same configuration")
} else {
newConfigurationRouter, err := LoadConfig(configuration, gloablConfiguration)
if err == nil {
currentConfiguration = configuration
configurationRouter = newConfigurationRouter
srv.Stop(time.Duration(gloablConfiguration.GraceTimeOut) * time.Second)
time.Sleep(3 * time.Second)
} else {
log.Error("Error loading new configuration, aborted ", err)
}
}
}
}()
// configure providers
if gloablConfiguration.Docker != nil {
providers = append(providers, gloablConfiguration.Docker)
}
if gloablConfiguration.Marathon != nil {
providers = append(providers, gloablConfiguration.Marathon)
}
if gloablConfiguration.File != nil {
if len(gloablConfiguration.File.Filename) == 0 {
// no filename, setting to global config file
gloablConfiguration.File.Filename = *globalConfigFile
}
providers = append(providers, gloablConfiguration.File)
}
if gloablConfiguration.Web != nil {
providers = append(providers, gloablConfiguration.Web)
}
if gloablConfiguration.Consul != nil {
providers = append(providers, gloablConfiguration.Consul)
}
// start providers
for _, provider := range providers {
log.Notice("Starting provider %v %+v", reflect.TypeOf(provider), provider)
currentProvider := provider
go func() {
currentProvider.Provide(configurationChan)
}()
}
goAway := false
go func() {
sig := <-sigs
log.Notice("I have to go... %+v", sig)
goAway = true
srv.Stop(time.Duration(gloablConfiguration.GraceTimeOut) * time.Second)
}()
for {
if goAway {
break
}
// middlewares
var negroni = negroni.New()
negroni.Use(metrics)
negroni.Use(loggerMiddleware)
//negroni.Use(middlewares.NewCircuitBreaker(oxyLogger))
//negroni.Use(middlewares.NewRoutes(configurationRouter))
negroni.UseHandler(configurationRouter)
srv = &graceful.Server{
Timeout: time.Duration(gloablConfiguration.GraceTimeOut) * time.Second,
NoSignalHandling: true,
Server: &http.Server{
Addr: gloablConfiguration.Port,
Handler: negroni,
},
}
go func() {
if len(gloablConfiguration.CertFile) > 0 && len(gloablConfiguration.KeyFile) > 0 {
srv.ListenAndServeTLS(gloablConfiguration.CertFile, gloablConfiguration.KeyFile)
} else {
srv.ListenAndServe()
}
}()
log.Notice("Started")
<-srv.StopChan()
log.Notice("Stopped")
}
}
func main() {
kingpin.Parse()
fmtlog.SetFlags(fmtlog.Lshortfile | fmtlog.LstdFlags)
var srv *graceful.Server
var configurationRouter *mux.Router
var configurationChan = make(chan *Configuration, 10)
defer close(configurationChan)
var providers = []Provider{}
var sigs = make(chan os.Signal, 1)
signal.Notify(sigs, syscall.SIGINT, syscall.SIGTERM)
// load global configuration
gloablConfiguration := LoadFileConfig(*globalConfigFile)
loggerMiddleware := middlewares.NewLogger(gloablConfiguration.AccessLogsFile)
defer loggerMiddleware.Close()
// logging
level, err := log.ParseLevel(strings.ToLower(gloablConfiguration.LogLevel))
if err != nil {
log.Fatal("Error getting level", err)
}
log.SetLevel(level)
if len(gloablConfiguration.TraefikLogsFile) > 0 {
fi, err := os.OpenFile(gloablConfiguration.TraefikLogsFile, os.O_RDWR|os.O_CREATE|os.O_APPEND, 0666)
defer fi.Close()
if err != nil {
log.Fatal("Error opening file", err)
} else {
log.SetOutput(fi)
log.SetFormatter(&log.TextFormatter{DisableColors: true, FullTimestamp: true, DisableSorting: true})
}
} else {
log.SetFormatter(&log.TextFormatter{FullTimestamp: true, DisableSorting: true})
}
configurationRouter = LoadDefaultConfig(gloablConfiguration)
// listen new configurations from providers
go func() {
for {
configuration := <-configurationChan
log.Infof("Configuration receveived %+v", configuration)
if configuration == nil {
log.Info("Skipping empty configuration")
} else if reflect.DeepEqual(currentConfiguration, configuration) {
log.Info("Skipping same configuration")
} else {
newConfigurationRouter, err := LoadConfig(configuration, gloablConfiguration)
if err == nil {
currentConfiguration = configuration
configurationRouter = newConfigurationRouter
srv.Stop(time.Duration(gloablConfiguration.GraceTimeOut) * time.Second)
time.Sleep(3 * time.Second)
} else {
log.Error("Error loading new configuration, aborted ", err)
}
}
}
}()
// configure providers
if gloablConfiguration.Docker != nil {
providers = append(providers, gloablConfiguration.Docker)
}
if gloablConfiguration.Marathon != nil {
providers = append(providers, gloablConfiguration.Marathon)
}
if gloablConfiguration.File != nil {
if len(gloablConfiguration.File.Filename) == 0 {
// no filename, setting to global config file
gloablConfiguration.File.Filename = *globalConfigFile
}
providers = append(providers, gloablConfiguration.File)
}
if gloablConfiguration.Web != nil {
providers = append(providers, gloablConfiguration.Web)
}
if gloablConfiguration.Consul != nil {
providers = append(providers, gloablConfiguration.Consul)
}
// start providers
for _, provider := range providers {
log.Infof("Starting provider %v %+v", reflect.TypeOf(provider), provider)
currentProvider := provider
go func() {
currentProvider.Provide(configurationChan)
}()
}
goAway := false
go func() {
sig := <-sigs
log.Infof("I have to go... %+v", sig)
goAway = true
srv.Stop(time.Duration(gloablConfiguration.GraceTimeOut) * time.Second)
}()
for {
if goAway {
break
}
// middlewares
var negroni = negroni.New()
negroni.Use(metrics)
negroni.Use(loggerMiddleware)
//negroni.Use(middlewares.NewCircuitBreaker(oxyLogger))
//negroni.Use(middlewares.NewRoutes(configurationRouter))
negroni.UseHandler(configurationRouter)
srv = &graceful.Server{
Timeout: time.Duration(gloablConfiguration.GraceTimeOut) * time.Second,
NoSignalHandling: true,
Server: &http.Server{
Addr: gloablConfiguration.Port,
Handler: negroni,
},
}
go func() {
if len(gloablConfiguration.CertFile) > 0 && len(gloablConfiguration.KeyFile) > 0 {
err := srv.ListenAndServeTLS(gloablConfiguration.CertFile, gloablConfiguration.KeyFile)
if err != nil {
netOpError, ok := err.(*net.OpError)
if ok && netOpError.Err.Error() != "use of closed network connection" {
log.Fatal("Error creating server: ", err)
}
}
} else {
err := srv.ListenAndServe()
if err != nil {
netOpError, ok := err.(*net.OpError)
if ok && netOpError.Err.Error() != "use of closed network connection" {
log.Fatal("Error creating server: ", err)
}
}
}
}()
log.Info("Started")
<-srv.StopChan()
log.Info("Stopped")
}
}
