evcc-io/cmd/root.go
2022-12-12 17:00:05 +01:00

286 lines
7 KiB
Go

package cmd
import (
"errors"
"fmt"
"net/http"
_ "net/http/pprof" // pprof handler
"os"
"os/signal"
"strings"
"sync"
"syscall"
"time"
"github.com/evcc-io/evcc/core"
"github.com/evcc-io/evcc/push"
"github.com/evcc-io/evcc/server"
"github.com/evcc-io/evcc/server/modbus"
"github.com/evcc-io/evcc/server/updater"
"github.com/evcc-io/evcc/util"
"github.com/evcc-io/evcc/util/pipe"
"github.com/evcc-io/evcc/util/sponsor"
"github.com/evcc-io/evcc/util/telemetry"
_ "github.com/joho/godotenv/autoload"
"github.com/prometheus/client_golang/prometheus/promhttp"
"github.com/spf13/cobra"
"github.com/spf13/viper"
)
const rebootDelay = 5 * time.Minute // delayed reboot on error
var (
log = util.NewLogger("main")
cfgFile string
ignoreErrors = []string{"warn", "error"} // don't add to cache
ignoreMqtt = []string{"auth", "releaseNotes"} // excessive size may crash certain brokers
)
// rootCmd represents the base command when called without any subcommands
var rootCmd = &cobra.Command{
Use: "evcc",
Short: "EV Charge Controller",
Version: server.FormattedVersion(),
Run: runRoot,
}
func init() {
cobra.OnInitialize(initConfig)
// global options
rootCmd.PersistentFlags().StringVarP(&cfgFile, "config", "c", "", "Config file (default \"~/evcc.yaml\" or \"/etc/evcc.yaml\")")
rootCmd.PersistentFlags().BoolP("help", "h", false, "Help")
rootCmd.PersistentFlags().Bool(flagHeaders, false, flagHeadersDescription)
// config file options
rootCmd.PersistentFlags().String(flagSqlite, conf.Database.Dsn, flagSqliteDescription)
bindP(rootCmd, "database.dsn", flagSqlite)
rootCmd.PersistentFlags().StringP("log", "l", "info", "Log level (fatal, error, warn, info, debug, trace)")
bindP(rootCmd, "log")
rootCmd.Flags().Bool("metrics", false, "Expose metrics")
bind(rootCmd, "metrics")
rootCmd.Flags().Bool("profile", false, "Expose pprof profiles")
bind(rootCmd, "profile")
}
// initConfig reads in config file and ENV variables if set
func initConfig() {
if cfgFile != "" {
// Use config file from the flag
viper.SetConfigFile(cfgFile)
} else {
// Search for config in home directory if available
if home, err := os.UserHomeDir(); err == nil {
viper.AddConfigPath(home)
}
// Search config in home directory with name "mbmd" (without extension).
viper.AddConfigPath(".") // optionally look for config in the working directory
viper.AddConfigPath("/etc") // path to look for the config file in
viper.SetConfigName("evcc")
}
viper.SetEnvPrefix("evcc")
viper.AutomaticEnv() // read in environment variables that match
// print version
util.LogLevel("info", nil)
log.INFO.Printf("evcc %s", server.FormattedVersion())
}
// Execute adds all child commands to the root command and sets flags appropriately.
func Execute() {
if err := rootCmd.Execute(); err != nil {
fmt.Println(err)
os.Exit(1)
}
}
func runRoot(cmd *cobra.Command, args []string) {
// load config and re-configure logging after reading config file
var err error
if cfgErr := loadConfigFile(&conf); errors.As(cfgErr, &viper.ConfigFileNotFoundError{}) {
log.INFO.Println("missing config file - switching into demo mode")
if err := demoConfig(&conf); err != nil {
log.FATAL.Fatal(err)
}
} else {
err = cfgErr
}
// network config
if viper.GetString("uri") != "" {
log.WARN.Println("`uri` is deprecated and will be ignored. Use `network` instead.")
}
log.INFO.Printf("starting ui and api at :%d", conf.Network.Port)
// start broadcasting values
tee := new(util.Tee)
// value cache
cache := util.NewCache()
go cache.Run(pipe.NewDropper(ignoreErrors...).Pipe(tee.Attach()))
// create web server
socketHub := server.NewSocketHub()
httpd := server.NewHTTPd(fmt.Sprintf(":%d", conf.Network.Port), socketHub)
// metrics
if viper.GetBool("metrics") {
httpd.Router().Handle("/metrics", promhttp.Handler())
}
// pprof
if viper.GetBool("profile") {
httpd.Router().PathPrefix("/debug/").Handler(http.DefaultServeMux)
}
// publish to UI
go socketHub.Run(tee.Attach(), cache)
// setup values channel
valueChan := make(chan util.Param)
go tee.Run(valueChan)
// capture log messages for UI
util.CaptureLogs(valueChan)
// setup environment
if err == nil {
err = configureEnvironment(cmd, conf)
}
// setup telemetry
if err == nil {
telemetry.Create(conf.Plant)
if conf.Telemetry {
err = telemetry.Enable(true)
}
}
// setup modbus proxy
if err == nil {
for _, cfg := range conf.ModbusProxy {
if err = modbus.StartProxy(cfg.Port, cfg.Settings, cfg.ReadOnly); err != nil {
break
}
}
}
// setup site and loadpoints
var site *core.Site
if err == nil {
cp.TrackVisitors() // track duplicate usage
site, err = configureSiteAndLoadpoints(conf)
}
// setup database
if err == nil && conf.Influx.URL != "" {
configureInflux(conf.Influx, site.LoadPoints(), tee.Attach())
}
// setup mqtt publisher
if err == nil && conf.Mqtt.Broker != "" {
publisher := server.NewMQTT(strings.Trim(conf.Mqtt.Topic, "/"))
go publisher.Run(site, pipe.NewDropper(ignoreMqtt...).Pipe(tee.Attach()))
}
// announce on mDNS
if err == nil && strings.HasSuffix(conf.Network.Host, ".local") {
err = configureMDNS(conf.Network)
}
// start HEMS server
if err == nil && conf.HEMS.Type != "" {
err = configureHEMS(conf.HEMS, site, httpd)
}
// setup messaging
var pushChan chan push.Event
if err == nil {
pushChan, err = configureMessengers(conf.Messaging, cache)
}
// run shutdown functions on stop
var once sync.Once
stopC := make(chan struct{})
// catch signals
go func() {
signalC := make(chan os.Signal, 1)
signal.Notify(signalC, os.Interrupt, syscall.SIGTERM)
<-signalC // wait for signal
once.Do(func() { close(stopC) }) // signal loop to end
}()
// wait for shutdown
go func() {
<-stopC
select {
case <-shutdownDoneC(): // wait for shutdown
case <-time.After(conf.Interval):
}
if err != nil {
os.Exit(1)
}
os.Exit(0)
}()
// show main ui
if err == nil {
httpd.RegisterSiteHandlers(site, cache)
// set channels
site.DumpConfig()
site.Prepare(valueChan, pushChan)
// show and check version
valueChan <- util.Param{Key: "version", Val: server.FormattedVersion()}
go updater.Run(log, httpd, valueChan)
// expose sponsor to UI
if sponsor.Subject != "" {
valueChan <- util.Param{Key: "sponsor", Val: sponsor.Subject}
}
// allow web access for vehicles
cp.webControl(conf.Network, httpd.Router(), valueChan)
go func() {
site.Run(stopC, conf.Interval)
}()
} else {
httpd.RegisterShutdownHandler(func() {
log.FATAL.Println("evcc was stopped. OS should restart the service. Or restart manually.")
once.Do(func() { close(stopC) }) // signal loop to end
})
publishErrorInfo(valueChan, cfgFile, err)
log.FATAL.Println(err)
log.FATAL.Printf("will attempt restart in: %v", rebootDelay)
go func() {
<-time.After(rebootDelay)
once.Do(func() { close(stopC) }) // signal loop to end
}()
}
// uds health check listener
go server.HealthListener(site)
log.FATAL.Println(httpd.ListenAndServe())
}