avm99963 | 83f8f29 | 2021-08-24 18:26:52 +0200 | [diff] [blame] | 1 | package main |
| 2 | |
| 3 | import ( |
| 4 | "context" |
| 5 | "database/sql" |
| 6 | "flag" |
| 7 | "fmt" |
| 8 | "log" |
| 9 | "net" |
| 10 | "time" |
| 11 | |
| 12 | _ "github.com/go-sql-driver/mysql" |
| 13 | "google.golang.org/grpc" |
| 14 | "google.golang.org/grpc/codes" |
| 15 | "google.golang.org/grpc/reflection" |
| 16 | "google.golang.org/grpc/status" |
| 17 | "google.golang.org/protobuf/proto" |
| 18 | |
| 19 | pb "gomodules.avm99963.com/twpt-server/api_proto" |
| 20 | db "gomodules.avm99963.com/twpt-server/internal/db" |
| 21 | ) |
| 22 | |
| 23 | var ( |
| 24 | port = flag.Int("port", 10000, "The server port") |
| 25 | dbDsn = flag.String("db", "", "MySQL/MariaDB database data source name (DSN)") // https://github.com/go-sql-driver/mysql#dsn-data-source-name |
| 26 | dbConnMaxLifetime = flag.Int("dbConnMaxLifetime", 3*60, "Maximum amount of time a connection to the database may be reused in seconds.") |
| 27 | dbMaxOpenConns = flag.Int("dbMaxOpenConns", 5, "Maximum number of open connections to the database.") |
| 28 | dbMaxIdleConns = flag.Int("dbMaxIdleConns", *dbMaxOpenConns, "Maximum number of connections to the database in the idle connection pool.") |
| 29 | ) |
| 30 | |
| 31 | type killSwitchServiceServer struct { |
| 32 | pb.UnimplementedKillSwitchServiceServer |
| 33 | dbPool *sql.DB |
| 34 | } |
| 35 | |
| 36 | func newKillSwitchServiceServer() *killSwitchServiceServer { |
| 37 | s := &killSwitchServiceServer{} |
| 38 | db, err := sql.Open("mysql", *dbDsn) |
| 39 | if err != nil { |
| 40 | log.Fatalf("unable to open database connection: %v", err) |
| 41 | } |
| 42 | db.SetConnMaxLifetime(time.Duration(*dbConnMaxLifetime) * time.Second) |
| 43 | db.SetMaxOpenConns(*dbMaxOpenConns) |
| 44 | db.SetMaxIdleConns(*dbMaxIdleConns) |
| 45 | |
| 46 | ctx, cancel := context.WithTimeout(context.Background(), 1*time.Second) |
| 47 | defer cancel() |
| 48 | |
| 49 | if err := db.PingContext(ctx); err != nil { |
| 50 | log.Fatalf("unable to connect to database: %v", err) |
| 51 | } |
| 52 | |
| 53 | s.dbPool = db |
| 54 | return s |
| 55 | } |
| 56 | |
| 57 | func (s *killSwitchServiceServer) GetKillSwitchStatus(ctx context.Context, req *pb.GetKillSwitchStatusRequest) (*pb.GetKillSwitchStatusResponse, error) { |
| 58 | return nil, status.Errorf(codes.Unimplemented, "Unimplemented method.") |
| 59 | } |
| 60 | |
| 61 | func (s *killSwitchServiceServer) GetKillSwitchOverview(ctx context.Context, req *pb.GetKillSwitchOverviewRequest) (*pb.GetKillSwitchOverviewResponse, error) { |
Adrià Vilanova Martínez | 25e1211 | 2021-08-25 13:48:06 +0200 | [diff] [blame^] | 62 | killSwitches, err := db.ListKillSwitches(s.dbPool, ctx) |
| 63 | if err != nil { |
| 64 | return nil, status.Errorf(codes.Unavailable, err.Error()) |
| 65 | } |
| 66 | res := &pb.GetKillSwitchOverviewResponse{ |
| 67 | KillSwitches: killSwitches, |
| 68 | } |
| 69 | return res, nil |
avm99963 | 83f8f29 | 2021-08-24 18:26:52 +0200 | [diff] [blame] | 70 | } |
| 71 | |
| 72 | func (s *killSwitchServiceServer) SyncFeatures(ctx context.Context, req *pb.SyncFeaturesRequest) (*pb.SyncFeaturesResponse, error) { |
| 73 | log.Println("Syncing features...") |
| 74 | |
| 75 | for _, feature := range req.Features { |
| 76 | existingFeature, err := db.GetFeatureByCodename(s.dbPool, ctx, feature.Codename) |
| 77 | if err != nil { |
| 78 | return nil, status.Errorf(codes.Unavailable, err.Error()) |
| 79 | } |
| 80 | // If the feature didn't exist in the db, add it. Otherwise, update it if applicable. |
| 81 | if existingFeature == nil { |
| 82 | if err := db.AddFeature(s.dbPool, ctx, feature); err != nil { |
| 83 | return nil, status.Error(codes.Unavailable, err.Error()) |
| 84 | } |
| 85 | } else { |
| 86 | canonicalExistingFeature := *existingFeature |
| 87 | canonicalExistingFeature.Id = 0 |
| 88 | if !proto.Equal(&canonicalExistingFeature, feature) { |
| 89 | if err := db.UpdateFeature(s.dbPool, ctx, existingFeature.Id, feature); err != nil { |
| 90 | return nil, status.Error(codes.Unavailable, err.Error()) |
| 91 | } |
| 92 | } |
| 93 | } |
| 94 | } |
| 95 | |
| 96 | res := &pb.SyncFeaturesResponse{} |
| 97 | return res, nil |
| 98 | } |
| 99 | |
| 100 | func (s *killSwitchServiceServer) ListFeatures(ctx context.Context, req *pb.ListFeaturesRequest) (*pb.ListFeaturesResponse, error) { |
Adrià Vilanova Martínez | 25e1211 | 2021-08-25 13:48:06 +0200 | [diff] [blame^] | 101 | features, err := db.ListFeatures(s.dbPool, ctx, req.WithDeprecatedFeatures) |
| 102 | if err != nil { |
| 103 | return nil, status.Errorf(codes.Unavailable, err.Error()) |
| 104 | } |
| 105 | res := &pb.ListFeaturesResponse{ |
| 106 | Features: features, |
| 107 | } |
| 108 | return res, nil |
avm99963 | 83f8f29 | 2021-08-24 18:26:52 +0200 | [diff] [blame] | 109 | } |
| 110 | |
| 111 | func (s *killSwitchServiceServer) EnableKillSwitch(ctx context.Context, req *pb.EnableKillSwitchRequest) (*pb.EnableKillSwitchResponse, error) { |
Adrià Vilanova Martínez | 25e1211 | 2021-08-25 13:48:06 +0200 | [diff] [blame^] | 112 | if req.GetKillSwitch().GetFeature().GetId() == 0 { |
| 113 | return nil, status.Errorf(codes.InvalidArgument, "feature.id must be set.") |
| 114 | } |
| 115 | |
| 116 | err := db.EnableKillSwitch(s.dbPool, ctx, req.KillSwitch) |
| 117 | if err != nil { |
| 118 | return nil, status.Errorf(codes.Unavailable, err.Error()) |
| 119 | } |
| 120 | res := &pb.EnableKillSwitchResponse{} |
| 121 | return res, nil |
avm99963 | 83f8f29 | 2021-08-24 18:26:52 +0200 | [diff] [blame] | 122 | } |
| 123 | |
| 124 | func (s *killSwitchServiceServer) DisableKillSwitch(ctx context.Context, req *pb.DisableKillSwitchRequest) (*pb.DisableKillSwitchResponse, error) { |
Adrià Vilanova Martínez | 25e1211 | 2021-08-25 13:48:06 +0200 | [diff] [blame^] | 125 | if req.GetKillSwitchId() == 0 { |
| 126 | return nil, status.Errorf(codes.InvalidArgument, "kill_switch_id must be set.") |
| 127 | } |
| 128 | |
| 129 | err := db.DisableKillSwitch(s.dbPool, ctx, req.KillSwitchId) |
| 130 | if err != nil { |
| 131 | return nil, status.Errorf(codes.Unavailable, err.Error()) |
| 132 | } |
| 133 | res := &pb.DisableKillSwitchResponse{} |
| 134 | return res, nil |
avm99963 | 83f8f29 | 2021-08-24 18:26:52 +0200 | [diff] [blame] | 135 | } |
| 136 | |
| 137 | func (s *killSwitchServiceServer) ListAuthorizedUsers(ctx context.Context, req *pb.ListAuthorizedUsersRequest) (*pb.ListAuthorizedUsersResponse, error) { |
Adrià Vilanova Martínez | 25e1211 | 2021-08-25 13:48:06 +0200 | [diff] [blame^] | 138 | users, err := db.ListAuthorizedUsers(s.dbPool, ctx) |
| 139 | if err != nil { |
| 140 | return nil, status.Errorf(codes.Unavailable, err.Error()) |
| 141 | } |
| 142 | res := &pb.ListAuthorizedUsersResponse{ |
| 143 | Users: users, |
| 144 | } |
| 145 | return res, nil |
avm99963 | 83f8f29 | 2021-08-24 18:26:52 +0200 | [diff] [blame] | 146 | } |
| 147 | |
| 148 | func (s *killSwitchServiceServer) AddAuthorizedUser(ctx context.Context, req *pb.AddAuthorizedUserRequest) (*pb.AddAuthorizedUserResponse, error) { |
Adrià Vilanova Martínez | 25e1211 | 2021-08-25 13:48:06 +0200 | [diff] [blame^] | 149 | if req.GetUser().GetGoogleUid() == "" && req.GetUser().GetEmail() == "" { |
| 150 | return nil, status.Errorf(codes.InvalidArgument, "At least one of google_uid or email must be set.") |
| 151 | } |
| 152 | |
| 153 | err := db.AddAuthorizedUser(s.dbPool, ctx, req.User) |
| 154 | if err != nil { |
| 155 | return nil, status.Errorf(codes.Unavailable, err.Error()) |
| 156 | } |
| 157 | res := &pb.AddAuthorizedUserResponse{} |
| 158 | return res, nil |
avm99963 | 83f8f29 | 2021-08-24 18:26:52 +0200 | [diff] [blame] | 159 | } |
| 160 | |
| 161 | func (s *killSwitchServiceServer) UpdateAuthorizedUser(ctx context.Context, req *pb.UpdateAuthorizedUserRequest) (*pb.UpdateAuthorizedUserResponse, error) { |
Adrià Vilanova Martínez | 25e1211 | 2021-08-25 13:48:06 +0200 | [diff] [blame^] | 162 | if req.GetUserId() == 0 { |
| 163 | return nil, status.Errorf(codes.InvalidArgument, "user_id must be greater than 0.") |
| 164 | } |
| 165 | |
| 166 | if req.GetUser().GetGoogleUid() == "" && req.GetUser().GetEmail() == "" { |
| 167 | return nil, status.Errorf(codes.InvalidArgument, "At least one of google_uid or email must be set.") |
| 168 | } |
| 169 | |
| 170 | err := db.UpdateAuthorizedUser(s.dbPool, ctx, req.UserId, req.User) |
| 171 | if err != nil { |
| 172 | return nil, status.Errorf(codes.Unavailable, err.Error()) |
| 173 | } |
| 174 | res := &pb.UpdateAuthorizedUserResponse{} |
| 175 | return res, nil |
avm99963 | 83f8f29 | 2021-08-24 18:26:52 +0200 | [diff] [blame] | 176 | } |
| 177 | |
| 178 | func (s *killSwitchServiceServer) DeleteAuthorizedUser(ctx context.Context, req *pb.DeleteAuthorizedUserRequest) (*pb.DeleteAuthorizedUserResponse, error) { |
Adrià Vilanova Martínez | 25e1211 | 2021-08-25 13:48:06 +0200 | [diff] [blame^] | 179 | if req.GetUserId() == 0 { |
| 180 | return nil, status.Errorf(codes.InvalidArgument, "user_id must be greater than 0.") |
| 181 | } |
| 182 | |
| 183 | err := db.DeleteAuthorizedUser(s.dbPool, ctx, req.UserId) |
| 184 | if err != nil { |
| 185 | return nil, status.Errorf(codes.Unavailable, err.Error()) |
| 186 | } |
| 187 | res := &pb.DeleteAuthorizedUserResponse{} |
| 188 | return res, nil |
avm99963 | 83f8f29 | 2021-08-24 18:26:52 +0200 | [diff] [blame] | 189 | } |
| 190 | |
| 191 | func main() { |
| 192 | flag.Parse() |
| 193 | |
| 194 | lis, err := net.Listen("tcp", fmt.Sprintf("localhost:%d", *port)) |
| 195 | if err != nil { |
| 196 | log.Fatalf("Failed to listen: %v", err) |
| 197 | } |
| 198 | |
| 199 | grpcServer := grpc.NewServer() |
| 200 | pb.RegisterKillSwitchServiceServer(grpcServer, newKillSwitchServiceServer()) |
| 201 | // Register reflection service on gRPC server. |
| 202 | reflection.Register(grpcServer) |
| 203 | grpcServer.Serve(lis) |
| 204 | } |