/
module.go
127 lines (103 loc) · 3.3 KB
/
module.go
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package fxgrpcserver
import (
"context"
"fmt"
"net"
"github.com/ekkinox/fx-template/modules/fxconfig"
"github.com/ekkinox/fx-template/modules/fxhealthchecker"
"github.com/ekkinox/fx-template/modules/fxlogger"
middleware "github.com/grpc-ecosystem/go-grpc-middleware/v2"
"github.com/grpc-ecosystem/go-grpc-middleware/v2/interceptors/recovery"
"go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc"
"go.uber.org/fx"
"google.golang.org/grpc"
"google.golang.org/grpc/health/grpc_health_v1"
)
const DefaultPort = 50051
var FxGrpcServerModule = fx.Module(
"grpc-server",
fx.Provide(
NewDefaultGrpcServerFactory,
NewFxGrpcServiceRegistry,
NewFxGrpcServer,
),
)
type FxGrpcServerParam struct {
fx.In
LifeCycle fx.Lifecycle
Factory GrpcServerFactory
Registry *GrpcServiceRegistry
Config *fxconfig.Config
Logger *fxlogger.Logger
HealthChecker *fxhealthchecker.HealthChecker
}
func StartFxGrpcServer() fx.Option {
return fx.Invoke(func(*GrpcServiceRegistry, *grpc.Server) {})
}
func NewFxGrpcServer(p FxGrpcServerParam) (*grpc.Server, error) {
// interceptors
grpcPanicRecoveryHandler := NewGrpcPanicRecoveryHandler(p.Config, p.Logger)
loggerInterceptor := NewLoggerInterceptor(p.Logger)
unaryInterceptors := []grpc.UnaryServerInterceptor{
loggerInterceptor.UnaryInterceptor(),
recovery.UnaryServerInterceptor(recovery.WithRecoveryHandler(grpcPanicRecoveryHandler.Handle())),
}
streamInterceptors := []grpc.StreamServerInterceptor{
loggerInterceptor.StreamInterceptor(),
recovery.StreamServerInterceptor(recovery.WithRecoveryHandler(grpcPanicRecoveryHandler.Handle())),
}
if p.Config.GetBool("modules.grpc.tracer.enabled") {
unaryInterceptors = append(unaryInterceptors, otelgrpc.UnaryServerInterceptor())
streamInterceptors = append(streamInterceptors, otelgrpc.StreamServerInterceptor())
}
// server
grpcServer, err := p.Factory.Create(
WithServerOptions(
middleware.WithUnaryServerChain(unaryInterceptors...),
middleware.WithStreamServerChain(streamInterceptors...),
),
WithReflection(p.Config.GetBool("modules.grpc.server.reflection")),
)
if err != nil {
p.Logger.Error().Err(err).Msg("failed to create grpc server")
return nil, err
}
// health check registration
grpcServer.RegisterService(
&grpc_health_v1.Health_ServiceDesc,
NewGrpcHealthCheckServer(p.HealthChecker, p.Logger),
)
// services registration
grpcServices, err := p.Registry.ResolveGrpcServices()
if err != nil {
p.Logger.Error().Err(err).Msg("failed to resolve grpc services")
return nil, err
}
for _, service := range grpcServices {
grpcServer.RegisterService(service.Description(), service.Implementation())
}
// lifecycles
p.LifeCycle.Append(fx.Hook{
OnStart: func(ctx context.Context) error {
port := p.Config.GetInt("modules.grpc.server.port")
if port == 0 {
port = DefaultPort
}
go func() {
lis, err := net.Listen("tcp", fmt.Sprintf(":%d", port))
if err != nil {
p.Logger.Error().Err(err).Msgf("failed to listen on %d for grpc server", port)
}
if err = grpcServer.Serve(lis); err != nil {
p.Logger.Error().Err(err).Msg("failed to serve grpc server")
}
}()
return nil
},
OnStop: func(ctx context.Context) error {
grpcServer.GracefulStop()
return nil
},
})
return grpcServer, nil
}