grpc for telebot. untested. [WIP]

4 files changed, 125 insertions, 59 deletions

diff --git a/telebot/Dockerfile b/telebot/Dockerfile
index 894b02e..6051f08 100644
--- a/telebot/Dockerfile
+++ b/telebot/Dockerfile
@@ -7,7 +7,6 @@ COPY *.go /telebot/
 RUN cd /telebot && go build
 
 FROM gcr.io/distroless/static-debian10
-COPY --from=certbuilder /cert/ /cert/
 COPY --from=builder /telebot/telebot /telebot/
 COPY ./docker-entrypoint.sh /telebot/
 ENTRYPOINT ["/telebot/docker-entrypoint.sh"]
diff --git a/telebot/go.mod b/telebot/go.mod
index 0907cbb..d035e69 100644
--- a/telebot/go.mod
+++ b/telebot/go.mod
@@ -4,8 +4,8 @@ go 1.15
 
 require (
 	github.com/go-telegram-bot-api/telegram-bot-api v4.6.4+incompatible
-	github.com/gorilla/mux v1.8.0
 	github.com/rs/zerolog v1.26.0
 	github.com/technoweenie/multipartstreamer v1.0.1 // indirect
-	github.com/terminaldweller/grpc v1.0.2
+	github.com/terminaldweller/grpc v1.0.3
+	google.golang.org/grpc v1.42.0
 )
diff --git a/telebot/go.sum b/telebot/go.sum
index efb0f7a..5b1e0a1 100644
--- a/telebot/go.sum
+++ b/telebot/go.sum
@@ -1,40 +1,111 @@
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+golang.org/x/tools v0.0.0-20190524140312-2c0ae7006135/go.mod h1:RgjU9mgBXZiqYHBnxXauZ1Gv1EHHAz9KjViQ78xBX0Q=
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@@ -42,8 +113,38 @@ golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8T
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diff --git a/telebot/telebot.go b/telebot/telebot.go
index 04bbf1c..0676ce9 100644
--- a/telebot/telebot.go
+++ b/telebot/telebot.go
@@ -2,17 +2,16 @@ package main
 
 import (
 	"context"
-	"encoding/json"
 	"flag"
-	"net/http"
+	"fmt"
+	"net"
 	"os"
-	"os/signal"
-	"time"
+	"strconv"
 
 	tgbotapi "github.com/go-telegram-bot-api/telegram-bot-api"
-	"github.com/gorilla/mux"
 	"github.com/rs/zerolog/log"
 	pb "github.com/terminaldweller/grpc/telebot/v1"
+	"google.golang.org/grpc"
 )
 
 var (
@@ -27,7 +26,8 @@ const (
 	SERVER_DEPLOYMENT_TYPE     = "SERVER_DEPLOYMENT_TYPE"
 )
 
-type NotificationService struct {
+type server struct {
+	pb.UnimplementedNotificationServiceServer
 }
 
 func getTGBot() *tgbotapi.BotAPI {
@@ -45,7 +45,7 @@ func sendMessage(bot *tgbotapi.BotAPI, msgText string, channelID int64) error {
 	return nil
 }
 
-func (s *NotificationService) Notify(ctx context.Context, NotificationRequest *pb.NotificationRequest) (*pb.NotificationResponse, error) {
+func (s *server) Notify(ctx context.Context, NotificationRequest *pb.NotificationRequest) (*pb.NotificationResponse, error) {
 	var err error
 	tgbotapi := getTGBot()
 	if NotificationRequest.ChannelId == 0 {
@@ -59,57 +59,23 @@ func (s *NotificationService) Notify(ctx context.Context, NotificationRequest *p
 	return &pb.NotificationResponse{Error: "", IsOK: true}, nil
 }
 
-func healthHandler(w http.ResponseWriter, r *http.Request) {
-	var telebotError string
-	IsTelebotOk := true
-
-	w.Header().Add("Content-Type", "application/json")
-	if r.Method != "GET" {
-		http.Error(w, "Method is not supported.", http.StatusNotFound)
+func startServer(port uint16) {
+	listener, err := net.Listen("tcp", fmt.Sprintf("0.0.0.0:%d", port))
+	if err != nil {
+		log.Fatal().Err(err)
 	}
 
-	w.WriteHeader(http.StatusOK)
-
-	json.NewEncoder(w).Encode(struct {
-		IsHivedOk    bool   `json:"isTelebotOK"`
-		TelebotError string `json:"telebotError"`
-	}{IsHivedOk: IsTelebotOk, TelebotError: telebotError})
-}
-
-func msgHandler(w http.ResponseWriter, r *http.Request) {
+	var opts []grpc.ServerOption
 
-}
-
-func startServer(gracefulWait time.Duration) {
-	r := mux.NewRouter()
-	srv := &http.Server{
-		Addr:         "0.0.0.0:" + *flagPort,
-		WriteTimeout: time.Second * 15,
-		ReadTimeout:  time.Second * 15,
-		Handler:      r,
+	grpcServer := grpc.NewServer(opts...)
+	pb.RegisterNotificationServiceServer(grpcServer, &server{})
+	if err := grpcServer.Serve(listener); err != nil {
+		log.Fatal().Err(err)
 	}
-	r.HandleFunc("/health", healthHandler)
-	r.HandleFunc("/msg", msgHandler)
-
-	go func() {
-		if err := srv.ListenAndServe(); err != nil {
-			log.Fatal().Err(err)
-		}
-	}()
-
-	c := make(chan os.Signal, 1)
-
-	signal.Notify(c, os.Interrupt)
-	<-c
-	ctx, cancel := context.WithTimeout(context.Background(), gracefulWait)
-	defer cancel()
-	srv.Shutdown(ctx)
-	log.Info().Msg("gracefully shut down the server")
 }
 
 func main() {
-	var gracefulWait time.Duration
-	flag.DurationVar(&gracefulWait, "gracefulwait", time.Second*15, "the duration to wait during the graceful shutdown")
 	flag.Parse()
-	startServer(gracefulWait)
+	port, _ := strconv.Atoi(*flagPort)
+	startServer(uint16(port))
 }