84 lines
2.1 KiB
Go
84 lines
2.1 KiB
Go
package app
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import (
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"context"
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"errors"
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"net"
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"sync"
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"time"
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"google.golang.org/grpc"
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healthgrpc "google.golang.org/grpc/health/grpc_health_v1"
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walletv1 "hyapp/api/proto/wallet/v1"
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"hyapp/pkg/grpchealth"
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"hyapp/pkg/logx"
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"hyapp/services/wallet-service/internal/config"
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walletservice "hyapp/services/wallet-service/internal/service/wallet"
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mysqlstorage "hyapp/services/wallet-service/internal/storage/mysql"
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grpcserver "hyapp/services/wallet-service/internal/transport/grpc"
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)
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// App 装配 wallet-service gRPC 入口。
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type App struct {
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server *grpc.Server
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listener net.Listener
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health *grpchealth.ServingChecker
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mysqlRepo *mysqlstorage.Repository
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closeOnce sync.Once
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}
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// New 初始化 wallet-service。
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func New(cfg config.Config) (*App, error) {
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startupCtx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
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defer cancel()
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// wallet-service 的账户、交易、分录和 outbox 必须共享同一个 MySQL 事务边界。
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repository, err := mysqlstorage.Open(startupCtx, cfg.MySQLDSN)
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if err != nil {
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return nil, err
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}
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listener, err := net.Listen("tcp", cfg.GRPCAddr)
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if err != nil {
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_ = repository.Close()
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return nil, err
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}
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server := grpc.NewServer(grpc.UnaryInterceptor(logx.UnaryServerInterceptor("wallet-service")))
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svc := walletservice.New(repository)
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walletv1.RegisterWalletServiceServer(server, grpcserver.NewServer(svc))
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health := grpchealth.NewServingChecker("wallet-service")
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healthgrpc.RegisterHealthServer(server, grpchealth.NewServer(health))
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return &App{
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server: server,
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listener: listener,
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health: health,
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mysqlRepo: repository,
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}, nil
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}
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// Run 启动 gRPC 服务。
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func (a *App) Run() error {
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a.health.MarkServing()
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err := a.server.Serve(a.listener)
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a.health.MarkStopped()
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if errors.Is(err, grpc.ErrServerStopped) {
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return nil
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}
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return err
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}
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// Close 关闭 gRPC 服务。
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func (a *App) Close() {
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a.closeOnce.Do(func() {
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a.health.MarkDraining()
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a.server.GracefulStop()
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if a.mysqlRepo != nil {
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// MySQL 连接池最后关闭，避免正在 drain 的扣费请求丢失提交能力。
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_ = a.mysqlRepo.Close()
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}
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})
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}
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