generated from kzmake/skeleton
/
main.go
106 lines (80 loc) · 2.1 KB
/
main.go
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package main
import (
"context"
"net"
"os"
"os/signal"
"syscall"
"time"
grpc_middleware "github.com/grpc-ecosystem/go-grpc-middleware"
grpc_recovery "github.com/grpc-ecosystem/go-grpc-middleware/recovery"
"github.com/kelseyhightower/envconfig"
grpc_zerolog "github.com/philip-bui/grpc-zerolog"
"github.com/rs/zerolog"
"github.com/rs/zerolog/log"
"golang.org/x/sync/errgroup"
"golang.org/x/xerrors"
"google.golang.org/grpc"
pb "github.com/kzmake/_idempotency-key/gen/go/time/v1"
"github.com/kzmake/_idempotency-key/backend/time/service/handler"
)
type Env struct {
ServiceAddress string `default:"localhost:50051"`
}
const prefix = "SERVICE"
var env Env
func init() {
log.Logger = zerolog.New(zerolog.ConsoleWriter{Out: os.Stdout}).With().Timestamp().Logger()
if err := envconfig.Process(prefix, &env); err != nil {
log.Fatal().Msgf("%+v", err)
}
log.Debug().Msgf("%+v", env)
}
func newGRPCServer() *grpc.Server {
s := grpc.NewServer(
grpc.UnaryInterceptor(grpc_middleware.ChainUnaryServer(
grpc_zerolog.NewUnaryServerInterceptorWithLogger(&log.Logger),
grpc_recovery.UnaryServerInterceptor(),
)),
)
pb.RegisterTimeServer(s, handler.NewTime())
return s
}
func run() error {
ctx := context.Background()
ctx, cancel := context.WithCancel(ctx)
defer cancel()
g, ctx := errgroup.WithContext(ctx)
grpcS := newGRPCServer()
g.Go(func() error {
lis, err := net.Listen("tcp", env.ServiceAddress)
if err != nil {
return xerrors.Errorf("failed to listen: %w", err)
}
return grpcS.Serve(lis)
})
quit := make(chan os.Signal, 1)
signal.Notify(quit, syscall.SIGINT, syscall.SIGTERM)
defer signal.Stop(quit)
select {
case <-quit:
break
case <-ctx.Done():
break
}
cancel()
log.Info().Msg("Shutting down server...")
_, timeout := context.WithTimeout(context.Background(), 5*time.Second)
defer timeout()
grpcS.GracefulStop()
if err := g.Wait(); err != nil {
return xerrors.Errorf("failed to shutdown: %w", err)
}
log.Info().Msgf("Server exiting")
return nil
}
func main() {
if err := run(); err != nil {
log.Fatal().Msgf("Failed to run server: %v", err)
}
}