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Merge pull request #11 from isd-sgcu/feature/grpc-server
Feature/grpc server
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
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@@ -8,3 +8,6 @@ database: | |
| name: johnjud_db | ||
| username: root | ||
| password: root | ||
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| service: | ||
| file: localhost:3004 | ||
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| Original file line number | Diff line number | Diff line change |
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@@ -12,7 +12,7 @@ services: | |
| volumes: | ||
| - postgres:/var/lib/postgresql/data | ||
| ports: | ||
| - "5433:5432" | ||
| - "5432:5432" | ||
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| volumes: | ||
| postgres: | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
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@@ -15,6 +15,7 @@ import ( | |
| ) | ||
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| type Service struct { | ||
| proto.UnimplementedLikeServiceServer | ||
| repository IRepository | ||
| } | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,5 +1,165 @@ | ||
| package main | ||
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| import ( | ||
| "context" | ||
| "fmt" | ||
| "net" | ||
| "os" | ||
| "os/signal" | ||
| "sync" | ||
| "syscall" | ||
| "time" | ||
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| likeRepo "github.com/isd-sgcu/johnjud-backend/src/app/repository/like" | ||
| petRepo "github.com/isd-sgcu/johnjud-backend/src/app/repository/pet" | ||
| imageSrv "github.com/isd-sgcu/johnjud-backend/src/app/service/image" | ||
| likeSrv "github.com/isd-sgcu/johnjud-backend/src/app/service/like" | ||
| petSrv "github.com/isd-sgcu/johnjud-backend/src/app/service/pet" | ||
| "github.com/isd-sgcu/johnjud-backend/src/config" | ||
| "github.com/isd-sgcu/johnjud-backend/src/database" | ||
| likePb "github.com/isd-sgcu/johnjud-go-proto/johnjud/backend/like/v1" | ||
| petPb "github.com/isd-sgcu/johnjud-go-proto/johnjud/backend/pet/v1" | ||
| imagePb "github.com/isd-sgcu/johnjud-go-proto/johnjud/file/image/v1" | ||
| "github.com/rs/zerolog/log" | ||
| "google.golang.org/grpc" | ||
| "google.golang.org/grpc/credentials/insecure" | ||
| "google.golang.org/grpc/health" | ||
| "google.golang.org/grpc/health/grpc_health_v1" | ||
| "google.golang.org/grpc/reflection" | ||
| ) | ||
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| type operation func(ctx context.Context) error | ||
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| func gracefulShutdown(ctx context.Context, timeout time.Duration, ops map[string]operation) <-chan struct{} { | ||
| wait := make(chan struct{}) | ||
| go func() { | ||
| s := make(chan os.Signal, 1) | ||
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| signal.Notify(s, syscall.SIGINT, syscall.SIGTERM, os.Interrupt) | ||
| sig := <-s | ||
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| log.Info(). | ||
| Str("service", "graceful shutdown"). | ||
| Msgf("got signal \"%v\" shutting down service", sig) | ||
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| timeoutFunc := time.AfterFunc(timeout, func() { | ||
| log.Error(). | ||
| Str("service", "graceful shutdown"). | ||
| Msgf("timeout %v ms has been elapsed, force exit", timeout.Milliseconds()) | ||
| os.Exit(0) | ||
| }) | ||
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| defer timeoutFunc.Stop() | ||
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| var wg sync.WaitGroup | ||
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| for key, op := range ops { | ||
| wg.Add(1) | ||
| innerOp := op | ||
| innerKey := key | ||
| go func() { | ||
| defer wg.Done() | ||
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| log.Info(). | ||
| Str("service", "graceful shutdown"). | ||
| Msgf("cleaning up: %v", innerKey) | ||
| if err := innerOp(ctx); err != nil { | ||
| log.Error(). | ||
| Str("service", "graceful shutdown"). | ||
| Err(err). | ||
| Msgf("%v: clean up failed: %v", innerKey, err.Error()) | ||
| return | ||
| } | ||
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| log.Info(). | ||
| Str("service", "graceful shutdown"). | ||
| Msgf("%v was shutdown gracefully", innerKey) | ||
| }() | ||
| } | ||
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| wg.Wait() | ||
| close(wait) | ||
| }() | ||
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| return wait | ||
| } | ||
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| func main() { | ||
| // Code | ||
| conf, err := config.LoadConfig() | ||
| if err != nil { | ||
| log.Fatal(). | ||
| Err(err). | ||
| Str("service", "backend"). | ||
| Msg("Failed to load config") | ||
| } | ||
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| db, err := database.InitPostgresDatabase(&conf.Database, conf.App.Debug) | ||
| if err != nil { | ||
| log.Fatal(). | ||
| Err(err). | ||
| Str("service", "backend"). | ||
| Msg("Failed to init postgres connection") | ||
| } | ||
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| fileConn, err := grpc.Dial(conf.Service.File, grpc.WithTransportCredentials(insecure.NewCredentials())) | ||
| if err != nil { | ||
| log.Fatal(). | ||
| Err(err). | ||
| Str("service", "johnjud-file"). | ||
| Msg("Cannot connect to service") | ||
| } | ||
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| lis, err := net.Listen("tcp", fmt.Sprintf(":%v", conf.App.Port)) | ||
| if err != nil { | ||
| log.Fatal(). | ||
| Err(err). | ||
| Str("service", "backend"). | ||
| Msg("Failed to start service") | ||
| } | ||
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| grpcServer := grpc.NewServer() | ||
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| likeRepo := likeRepo.NewRepository(db) | ||
| likeService := likeSrv.NewService(likeRepo) | ||
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| imageClient := imagePb.NewImageServiceClient(fileConn) | ||
| imageService := imageSrv.NewService(imageClient) | ||
| petRepo := petRepo.NewRepository(db) | ||
| petService := petSrv.NewService(petRepo, imageService) | ||
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| grpc_health_v1.RegisterHealthServer(grpcServer, health.NewServer()) | ||
| likePb.RegisterLikeServiceServer(grpcServer, likeService) | ||
| petPb.RegisterPetServiceServer(grpcServer, petService) | ||
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| reflection.Register(grpcServer) | ||
| go func() { | ||
| log.Info(). | ||
| Str("service", "backend"). | ||
| Msgf("JohnJud backend starting at port %v", conf.App.Port) | ||
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| if err := grpcServer.Serve(lis); err != nil { | ||
| log.Fatal(). | ||
| Err(err). | ||
| Str("service", "backend"). | ||
| Msg("Failed to start service") | ||
| } | ||
| }() | ||
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| wait := gracefulShutdown(context.Background(), 2*time.Second, map[string]operation{ | ||
| "server": func(ctx context.Context) error { | ||
| grpcServer.GracefulStop() | ||
| return nil | ||
| }, | ||
| }) | ||
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| <-wait | ||
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| grpcServer.GracefulStop() | ||
| log.Info(). | ||
| Str("service", "backend"). | ||
| Msg("Closing the listener") | ||
| lis.Close() | ||
| log.Info(). | ||
| Str("service", "backend"). | ||
| Msg("End the program") | ||
| } |