// NewGameHub creates a new GameHub for a given log contenxt.
func NewGameHub(ctx log.Interface) GameHub {
return GameHub{
Log: ctx.WithField("module", "GameHub"),
games: make(map[string]Game),
register: make(chan GameRegistrationRequest),
}
}
// GetHandlerManager gets a new HandlerManager for ttnctl
func GetHandlerManager(ctx log.Interface, appID string) (*grpc.ClientConn, *handler.ManagerClient) {
ctx.WithField("Handler", viper.GetString("handler-id")).Info("Discovering Handler...")
dscConn, client := GetDiscovery(ctx)
defer dscConn.Close()
handlerAnnouncement, err := client.Get(GetContext(ctx), &discovery.GetRequest{
ServiceName: "handler",
Id: viper.GetString("handler-id"),
})
if err != nil {
ctx.WithError(errors.FromGRPCError(err)).Fatal("Could not find Handler")
}
token := TokenForScope(ctx, scope.App(appID))
ctx.WithField("Handler", handlerAnnouncement.NetAddress).Info("Connecting with Handler...")
hdlConn, err := handlerAnnouncement.Dial()
if err != nil {
ctx.WithError(err).Fatal("Could not connect to Handler")
}
managerClient, err := handler.NewManagerClient(hdlConn, token)
if err != nil {
ctx.WithError(err).Fatal("Could not create Handler Manager")
}
return hdlConn, managerClient
}
// SetApp stores the app ID and app EUI preferences
func SetApp(ctx log.Interface, appID string, appEUI types.AppEUI) {
config := readData(appFilename)
config[idKey] = appID
config[euiKey] = appEUI.String()
err := writeData(appFilename, config)
if err != nil {
ctx.WithError(err).Fatal("Could not save app preference")
}
}
// ForceRefreshToken forces a refresh of the access token
func ForceRefreshToken(ctx log.Interface) {
tokenSource := GetTokenSource(ctx).(*ttnctlTokenSource)
token, err := tokenSource.Token()
if err != nil {
ctx.WithError(err).Fatal("Could not get access token")
}
token.Expiry = time.Now().Add(-1 * time.Second)
tokenSource.source = oauth2.ReuseTokenSource(token, getAccountServerTokenSource(token))
tokenSource.Token()
}
// NewGateway creates a new in-memory Gateway structure
func NewGateway(ctx log.Interface, id string) *Gateway {
ctx = ctx.WithField("GatewayID", id)
return &Gateway{
ID: id,
Status: NewStatusStore(),
Utilization: NewUtilization(),
Schedule: NewSchedule(ctx),
Ctx: ctx,
}
}
// NewGameState creates a new game state given a logging context.
func NewGameState(ctx log.Interface) GameState {
return GameState{
Users: make(map[*User]bool),
Shots: make(map[*Shot]bool),
Log: ctx.WithField("module", "GameState"),
UpdateInterval: DefaultStateUpdateLoopInterval,
simulate: make(chan []Command),
updateState: make(chan *GameState),
}
}
func saveToken(ctx log.Interface, token *oauth2.Token) {
data, err := json.Marshal(token)
if err != nil {
ctx.WithError(err).Fatal("Could not save access token")
}
err = GetTokenCache().Set(tokenName(), data)
if err != nil {
ctx.WithError(err).Fatal("Could not save access token")
}
}
// GetAccount gets a new Account server client for ttnctl
func GetAccount(ctx log.Interface) *account.Account {
token, err := GetTokenSource(ctx).Token()
if err != nil {
ctx.WithError(err).Fatal("Could not get access token")
}
server := viper.GetString("auth-server")
manager := GetTokenManager(token.AccessToken)
return account.NewWithManager(server, token.AccessToken, manager).WithHeader("User-Agent", GetUserAgent())
}
// NewServer sets up a new server instance.
func NewServer(ctx log.Interface, address, templateFilename string) Server {
return Server{
Log: ctx.WithFields(log.Fields{
"module": "Server",
"address": address,
}),
IndexTemplate: template.Must(template.ParseFiles(templateFilename)),
Address: address,
Hub: NewGameHub(ctx),
}
}
// NewUser creates a new user with a new Gopher to manage the user's new ws
// connection.
func NewUser(ctx log.Interface, ws *websocket.Conn) User {
id := uuid.NewRandom().String()[:3]
return User{
ID: id,
Gopher: NewGopher(id, RandomCoordinates(boardSize)),
Log: ctx.WithField("module", "User"),
send: make(chan []byte, 256),
ws: ws,
}
}
func TokenForScope(ctx log.Interface, scope string) string {
token, err := GetTokenSource(ctx).Token()
if err != nil {
ctx.WithError(err).Fatal("Could not get token")
}
restricted, err := GetTokenManager(token.AccessToken).TokenForScope(scope)
if err != nil {
ctx.WithError(err).Fatal("Could not get correct rights")
}
return restricted
}
// GetContext returns a new context
func GetContext(ctx log.Interface, extraPairs ...string) context.Context {
token, err := GetTokenSource(ctx).Token()
if err != nil {
ctx.WithError(err).Fatal("Could not get token")
}
md := metadata.Pairs(
"id", GetID(),
"service-name", "ttnctl",
"service-version", fmt.Sprintf("%s-%s (%s)", viper.GetString("version"), viper.GetString("gitCommit"), viper.GetString("buildDate")),
"token", token.AccessToken,
)
return metadata.NewContext(context.Background(), md)
}
// GetDiscovery gets the Discovery client for ttnctl
func GetDiscovery(ctx log.Interface) (*grpc.ClientConn, discovery.DiscoveryClient) {
path := path.Join(GetDataDir(), "/ca.cert")
cert, err := ioutil.ReadFile(path)
if err == nil && !api.RootCAs.AppendCertsFromPEM(cert) {
ctx.Warnf("Could not add root certificates from %s", path)
}
conn, err := api.Dial(viper.GetString("discovery-address"))
if err != nil {
ctx.WithError(err).Fatal("Could not connect to Discovery server")
}
return conn, discovery.NewDiscoveryClient(conn)
}
// GetAppID returns the AppID that must be set in the command options or config
func GetAppID(ctx log.Interface) string {
appID := viper.GetString("app-id")
if appID == "" {
appData := readData(appFilename)
id, ok := appData[idKey].(string)
if !ok {
ctx.Fatal("Invalid appID in config file.")
}
appID = id
}
if appID == "" {
ctx.Fatal("Missing AppID. You should select an application to use with \"ttnctl applications select\"")
}
return appID
}
// NewGame creates a new game instance.
func NewGame(ctx log.Interface, id string) Game {
gs := NewGameState(ctx)
cp := NewCommandProcessor(&gs)
return Game{
Log: ctx.WithFields(log.Fields{
"module": "Game",
"id": id,
}),
State: &gs,
CommandProcessor: &cp,
register: make(chan *User),
unregister: make(chan *User),
commands: make(chan Command),
}
}
// GetRouterManager starts a management connection with the router
func GetRouterManager(ctx log.Interface) (*grpc.ClientConn, router.RouterManagerClient) {
ctx.Info("Discovering Router...")
dscConn, client := GetDiscovery(ctx)
defer dscConn.Close()
routerAnnouncement, err := client.Get(GetContext(ctx), &discovery.GetRequest{
ServiceName: "router",
Id: viper.GetString("router-id"),
})
if err != nil {
ctx.WithError(errors.FromGRPCError(err)).Fatal("Could not get Router from Discovery")
}
ctx.Info("Connecting with Router...")
rtrConn, err := routerAnnouncement.Dial()
if err != nil {
ctx.WithError(err).Fatal("Could not connect to Router")
}
ctx.Info("Connected to Router")
return rtrConn, router.NewRouterManagerClient(rtrConn)
}
func getStoredToken(ctx log.Interface) *oauth2.Token {
tokenCache := GetTokenCache()
data, err := tokenCache.Get(tokenName())
if err != nil {
ctx.WithError(err).Fatal("Could not read stored token")
}
if data == nil {
ctx.Fatal("No account information found. Please login with ttnctl user login [access code]")
}
token := &oauth2.Token{}
err = json.Unmarshal(data, token)
if err != nil {
ctx.Fatal("Account information invalid. Please login with ttnctl user login [access code]")
}
return token
}
// GetAppEUI returns the AppEUI that must be set in the command options or config
func GetAppEUI(ctx log.Interface) types.AppEUI {
appEUIString := viper.GetString("app-eui")
if appEUIString == "" {
appData := readData(appFilename)
eui, ok := appData[euiKey].(string)
if !ok {
ctx.Fatal("Invalid AppEUI in config file")
}
appEUIString = eui
}
if appEUIString == "" {
ctx.Fatal("Missing AppEUI. You should select an application to use with \"ttnctl applications select\"")
}
eui, err := types.ParseAppEUI(appEUIString)
if err != nil {
ctx.WithError(err).Fatal("Invalid AppEUI")
}
return eui
}
func work(ctx log.Interface) (err error) {
path := "Readme.md"
defer ctx.WithField("path", path).Trace("opening").Stop(&err)
_, err = os.Open(path)
return
}
func (h *handler) ConvertFromLoRaWAN(ctx log.Interface, ttnUp *pb_broker.DeduplicatedUplinkMessage, appUp *types.UplinkMessage) error {
// Find Device
dev, err := h.devices.Get(ttnUp.AppId, ttnUp.DevId)
if err != nil {
return err
}
// Check for LoRaWAN
if lorawan := ttnUp.ProtocolMetadata.GetLorawan(); lorawan == nil {
return errors.NewErrInvalidArgument("Activation", "does not contain LoRaWAN metadata")
}
// LoRaWAN: Unmarshal Uplink
var phyPayload lorawan.PHYPayload
err = phyPayload.UnmarshalBinary(ttnUp.Payload)
if err != nil {
return err
}
macPayload, ok := phyPayload.MACPayload.(*lorawan.MACPayload)
if !ok {
return errors.NewErrInvalidArgument("Uplink", "does not contain a MAC payload")
}
macPayload.FHDR.FCnt = ttnUp.ProtocolMetadata.GetLorawan().FCnt
appUp.FCnt = macPayload.FHDR.FCnt
ctx = ctx.WithField("FCnt", appUp.FCnt)
// LoRaWAN: Validate MIC
ok, err = phyPayload.ValidateMIC(lorawan.AES128Key(dev.NwkSKey))
if err != nil {
return err
}
if !ok {
return errors.NewErrNotFound("device that validates MIC")
}
// LoRaWAN: Decrypt
if macPayload.FPort != nil && *macPayload.FPort != 0 && len(macPayload.FRMPayload) == 1 {
appUp.FPort = *macPayload.FPort
ctx = ctx.WithField("FCnt", appUp.FPort)
if err := phyPayload.DecryptFRMPayload(lorawan.AES128Key(dev.AppSKey)); err != nil {
return errors.NewErrInternal("Could not decrypt payload")
}
if len(macPayload.FRMPayload) == 1 {
payload, ok := macPayload.FRMPayload[0].(*lorawan.DataPayload)
if !ok {
return errors.NewErrInvalidArgument("Uplink FRMPayload", "must be of type *lorawan.DataPayload")
}
appUp.PayloadRaw = payload.Bytes
}
}
// LoRaWAN: Publish ACKs as events
if macPayload.FHDR.FCtrl.ACK {
h.mqttEvent <- &types.DeviceEvent{
AppID: appUp.AppID,
DevID: appUp.DevID,
Event: types.DownlinkAckEvent,
}
}
return nil
}
// SetApp stores the app EUI preference
func SetAppEUI(ctx log.Interface, appEUI types.AppEUI) {
err := setData(appFilename, euiKey, appEUI.String())
if err != nil {
ctx.WithError(err).Fatal("Could not save app EUI")
}
}
// New creates a new Component
func New(ctx log.Interface, serviceName string, announcedAddress string) (*Component, error) {
go func() {
memstats := new(runtime.MemStats)
for range time.Tick(time.Minute) {
runtime.ReadMemStats(memstats)
ctx.WithFields(log.Fields{
"Goroutines": runtime.NumGoroutine(),
"Memory": float64(memstats.Alloc) / 1000000,
}).Debugf("Stats")
}
}()
// Disable gRPC tracing
// SEE: https://github.com/grpc/grpc-go/issues/695
grpc.EnableTracing = false
component := &Component{
Config: ConfigFromViper(),
Ctx: ctx,
Identity: &pb_discovery.Announcement{
Id: viper.GetString("id"),
Description: viper.GetString("description"),
ServiceName: serviceName,
ServiceVersion: fmt.Sprintf("%s-%s (%s)", viper.GetString("version"), viper.GetString("gitCommit"), viper.GetString("buildDate")),
NetAddress: announcedAddress,
Public: viper.GetBool("public"),
},
AccessToken: viper.GetString("auth-token"),
}
if err := component.InitAuth(); err != nil {
return nil, err
}
if serviceName != "discovery" && serviceName != "networkserver" {
var err error
component.Discovery, err = pb_discovery.NewClient(
viper.GetString("discovery-address"),
component.Identity,
func() string {
token, _ := component.BuildJWT()
return token
},
)
if err != nil {
return nil, err
}
}
if healthPort := viper.GetInt("health-port"); healthPort > 0 {
http.HandleFunc("/healthz", func(w http.ResponseWriter, req *http.Request) {
switch component.GetStatus() {
case StatusHealthy:
w.WriteHeader(200)
w.Write([]byte("Status is HEALTHY"))
return
case StatusUnhealthy:
w.WriteHeader(503)
w.Write([]byte("Status is UNHEALTHY"))
return
}
})
go http.ListenAndServe(fmt.Sprintf(":%d", healthPort), nil)
}
if monitors := viper.GetStringMapString("monitor-servers"); len(monitors) != 0 {
component.Monitors = make(map[string]*pb_monitor.Client)
for name, addr := range monitors {
var err error
component.Monitors[name], err = pb_monitor.NewClient(ctx.WithField("Monitor", name), addr)
if err != nil {
return nil, err
}
}
}
return component, nil
}
// continue looking at dns entry for changes in config
func configLoop(ctx log.Interface, cfgURL string) {
ticker := time.Tick(15 * time.Second)
for {
select {
case <-ticker:
newIPs, err := dnscfg.Get(dnsAddr, ldPort)
if err != nil {
ctx.WithError(err).Error("dns lookup")
continue
}
if len(newIPs) == 0 {
ctx.Error("no ip addresses found")
continue
}
oldIPs, err := httpcfg.Get(cfgURL)
if err != nil {
ctx.WithError(err).Error("getting config")
continue
}
if eq(newIPs, oldIPs) {
ctx.Info("config up to date")
continue
}
err = httpcfg.Set(cfgURL, newIPs)
if err != nil {
ctx.WithError(err).Error("setting config")
continue
}
ctx.WithField("ips", newIPs).Info("setting config")
}
}
}
jsonHandler "github.com/apex/log/handlers/json"
levelHandler "github.com/apex/log/handlers/level"
multiHandler "github.com/apex/log/handlers/multi"
"github.com/mitchellh/go-homedir"
"github.com/spf13/cobra"
"github.com/spf13/viper"
"github.com/tj/go-elastic"
"google.golang.org/grpc/grpclog"
"gopkg.in/redis.v5"
)
var cfgFile string
var logFile *os.File
var ctx log.Interface
// RootCmd is executed when ttn is executed without a subcommand
var RootCmd = &cobra.Command{
Use: "ttn",
Short: "The Things Network's backend servers",
Long: `ttn launches The Things Network's backend servers`,
PersistentPreRun: func(cmd *cobra.Command, args []string) {
var logLevel = log.InfoLevel
if viper.GetBool("debug") {
logLevel = log.DebugLevel
}
var logHandlers []log.Handler
if !viper.GetBool("no-cli-logs") {
// Selfupdate runs a self-update for the current binary
func Selfupdate(ctx log.Interface, component string) {
if viper.GetString("gitBranch") == "unknown" {
ctx.Infof("You are not using an official %s build. Not proceeding with the update", component)
return
}
info, err := GetLatestInfo()
if err != nil {
ctx.WithError(err).Fatal("Could not get version information from the server")
}
if viper.GetString("gitCommit") == info.Commit {
ctx.Info("The git commit of the build on the server is the same as yours")
ctx.Info("Not proceeding with the update")
return
}
if date, err := time.Parse(time.RFC3339, viper.GetString("buildDate")); err == nil {
if date.Equal(info.Date) {
ctx.Infof("You have the latest version of %s", component)
ctx.Info("Nothing to update")
return
}
if date.After(info.Date) {
ctx.Infof("Your build is %s newer than the build on the server", date.Sub(info.Date))
ctx.Info("Not proceeding with the update")
return
}
ctx.Infof("The build on the server is %s newer than yours", info.Date.Sub(date))
}
ctx.Infof("Downloading the latest %s...", component)
binary, err := GetLatest(component)
if err != nil {
ctx.WithError(err).Fatal("Could not download latest binary")
}
filename, err := osext.Executable()
if err != nil {
ctx.WithError(err).Fatal("Could not get path to local binary")
}
stat, err := os.Stat(filename)
if err != nil {
ctx.WithError(err).Fatal("Could not stat local binary")
}
ctx.Info("Replacing local binary...")
if err := ioutil.WriteFile(filename+".new", binary, stat.Mode()); err != nil {
ctx.WithError(err).Fatal("Could not write new binary to filesystem")
}
if err := os.Rename(filename, filename+".old"); err != nil {
ctx.WithError(err).Fatal("Could not rename binary")
}
if err := os.Rename(filename+".new", filename); err != nil {
ctx.WithError(err).Fatal("Could not rename binary")
}
ctx.Infof("Updated %s to the latest version", component)
}