/
main.go
125 lines (99 loc) · 3.26 KB
/
main.go
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package main
import (
"context"
"net"
"net/http"
"os"
"os/signal"
"syscall"
"github.com/na4ma4/config"
"github.com/na4ma4/go-certprovider"
"github.com/na4ma4/rsca/api"
"github.com/na4ma4/rsca/internal/common"
"github.com/na4ma4/rsca/internal/mainconfig"
"github.com/na4ma4/rsca/internal/state"
"github.com/na4ma4/rsca/server"
"github.com/prometheus/client_golang/prometheus/promhttp"
"github.com/spf13/cobra"
"github.com/spf13/viper"
"go.uber.org/zap"
"golang.org/x/sync/errgroup"
"google.golang.org/grpc"
)
var rootCmd = &cobra.Command{
Use: "rscad",
Run: mainCommand,
}
func init() {
cobra.OnInitialize(mainconfig.ConfigInit)
rootCmd.PersistentFlags().BoolP("debug", "d", false, "Debug output")
_ = viper.BindPFlag("debug", rootCmd.PersistentFlags().Lookup("debug"))
_ = viper.BindEnv("debug", "DEBUG")
rootCmd.PersistentFlags().Bool("watchdog", false, "Enable systemd watchdog functionality")
_ = viper.BindPFlag("watchdog.enabled", rootCmd.PersistentFlags().Lookup("watchdog"))
_ = viper.BindEnv("watchdog.enabled", "WATCHDOG")
}
func main() {
_ = rootCmd.Execute()
}
func mainCommand(_ *cobra.Command, _ []string) {
cfg := config.NewViperConfigFromViper(viper.GetViper(), "rsca")
logger, _ := cfg.ZapConfig().Build()
defer logger.Sync()
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
lis, listenErr := net.Listen("tcp", cfg.GetString("server.listen"))
if listenErr != nil {
logger.Fatal("failed to listen", zap.Error(listenErr))
}
cp, cpErr := certprovider.NewFileProvider(
cfg.GetString("server.cert-dir"),
certprovider.ServerProvider(),
)
if cpErr != nil {
logger.Fatal("failed to get certificates", zap.Error(cpErr))
}
logger.Info("server listening", zap.String("bind", viper.GetString("server.listen")))
st, stateErr := state.NewDiskState(logger, cfg.GetString("server.state-store"))
if stateErr != nil {
logger.Fatal("failed to create disk state storage", zap.Error(stateErr))
}
defer st.Close()
// hostName := getHostname(cfg)
eg, ctx := errgroup.WithContext(ctx)
sapi := server.NewServer(logger, st)
gc := grpc.NewServer(cp.ServerOption())
api.RegisterRSCAServer(gc, sapi)
api.RegisterAdminServer(gc, sapi)
c := make(chan os.Signal, 1)
signal.Notify(c, os.Interrupt, syscall.SIGTERM)
eg.Go(common.WaitForOSSignal(ctx, cancel, cfg, logger, c))
eg.Go(sapi.Run(ctx, cfg))
eg.Go(common.StateReaper(ctx, cfg, logger, st))
eg.Go(common.ProcessWatchdog(ctx, cancel, cfg, logger))
eg.Go(func() error { return gc.Serve(lis) })
if cfg.GetBool("metrics.enabled") {
go func() {
http.Handle("/metrics", promhttp.Handler())
srv := http.Server{
Addr: cfg.GetString("metrics.listen"),
ReadTimeout: cfg.GetDuration("metrics.timeout.read"),
ReadHeaderTimeout: cfg.GetDuration("metrics.timeout.read-header"),
WriteTimeout: cfg.GetDuration("metrics.timeout.write"),
IdleTimeout: cfg.GetDuration("metrics.timeout.idle"),
}
if err := srv.ListenAndServe(); err != nil {
logger.Debug("metrics.Listen context done", zap.Error(ctx.Err()))
cancel()
}
}()
}
<-ctx.Done()
}
// func getHostname(cfg config.Conf) string {
// hostName := cfg.GetString("general.hostname")
// if hostName == "" {
// hostName, _ = os.Hostname()
// }
// return hostName
// }