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main.go
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main.go
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package main
import (
"context"
"github.com/blendle/zapdriver"
"github.com/grpc-ecosystem/go-grpc-middleware/util/metautils"
"github.com/grpc-ecosystem/grpc-gateway/v2/runtime"
"github.com/petomalina/xrpc/v2/examples/api"
"github.com/petomalina/xrpc/v2/pkg/multiplexer"
"github.com/petomalina/xrpc/v2/pkg/server"
"go.uber.org/zap"
"go.uber.org/zap/zapcore"
"google.golang.org/grpc"
"google.golang.org/grpc/reflection"
"os"
"os/signal"
"syscall"
"time"
)
func main() {
ctx, done := signal.NotifyContext(context.Background(), syscall.SIGINT, syscall.SIGTERM)
// create the zap logger for future use
config := zapdriver.NewProductionConfig()
config.Level = zap.NewAtomicLevelAt(zapcore.DebugLevel)
logger, err := config.Build(zapdriver.WrapCore(
zapdriver.ReportAllErrors(true),
zapdriver.ServiceName("Echo"),
))
if err != nil {
panic(err)
}
defer func() {
done()
if r := recover(); r != nil {
logger.Fatal("panic recovered, exiting", zap.Any("panic", r))
}
}()
// create and register the grpc server
grpcServer := grpc.NewServer()
echoSvc := &EchoService{Logger: logger}
api.RegisterEchoServiceServer(grpcServer, echoSvc)
reflection.Register(grpcServer)
// create the grpc-gateway server and register to grpc server
gwmux := runtime.NewServeMux()
err = api.RegisterEchoServiceHandlerFromEndpoint(ctx, gwmux, ":"+os.Getenv("PORT"), []grpc.DialOption{grpc.WithInsecure()})
if err != nil {
logger.Fatal("gw: failed to register: %v", zap.Error(err))
}
srv, err := server.New(
os.Getenv("PORT"),
time.Second*30,
server.WithHost("localhost"),
)
if err != nil {
logger.Fatal("xrpc: cannot create server: %v", zap.Error(err))
}
err = srv.ServeHTTPHandler(ctx, multiplexer.Make(nil,
// filters all application/grpc messages into the grpc server
multiplexer.GRPCHandler(grpcServer),
// defaults all other messages into the http multiplexer
multiplexer.HTTPHandler(gwmux),
))
if err != nil {
logger.Fatal("error serving the server", zap.Error(err))
}
logger.Info("shutting down")
}
// EchoService is the example service
type EchoService struct {
*zap.Logger
api.UnimplementedEchoServiceServer
}
// Call logs the message and returns it back
func (e *EchoService) Call(ctx context.Context, m *api.EchoMessage) (*api.EchoMessage, error) {
headers := metautils.ExtractIncoming(ctx)
e.Info("A new message was received",
zap.String("method", "EchoService.SubmitCall"),
zap.Any("headers", headers),
zap.Any("message", m),
)
return m, nil
}