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library/net/rpc/warden/examples/server/main.go

@@ -0,0 +1,108 @@
+package main
+
+import (
+	"context"
+	"fmt"
+	"io"
+	"os"
+	"os/signal"
+	"syscall"
+	"time"
+
+	"go-common/library/ecode"
+	epb "go-common/library/ecode/pb"
+	"go-common/library/log"
+	"go-common/library/net/rpc/warden"
+	pb "go-common/library/net/rpc/warden/proto/testproto"
+	xtime "go-common/library/time"
+
+	"github.com/golang/protobuf/ptypes"
+	"google.golang.org/grpc"
+)
+
+type helloServer struct {
+	addr string
+}
+
+func (s *helloServer) SayHello(ctx context.Context, in *pb.HelloRequest) (*pb.HelloReply, error) {
+	if in.Name == "err_detail_test" {
+		any, _ := ptypes.MarshalAny(&pb.HelloReply{Success: true, Message: "this is test detail"})
+		err := epb.From(ecode.AccessDenied)
+		err.ErrDetail = any
+		return nil, err
+	}
+	return &pb.HelloReply{Message: fmt.Sprintf("hello %s from %s", in.Name, s.addr)}, nil
+}
+
+func (s *helloServer) StreamHello(ss pb.Greeter_StreamHelloServer) error {
+	for i := 0; i < 3; i++ {
+		in, err := ss.Recv()
+		if err == io.EOF {
+			return nil
+		}
+		if err != nil {
+			return err
+		}
+		ret := &pb.HelloReply{Message: "Hello " + in.Name, Success: true}
+		err = ss.Send(ret)
+		if err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func runServer(addr string) *warden.Server {
+	server := warden.NewServer(&warden.ServerConfig{
+		//服务端每个请求的默认超时时间
+		Timeout: xtime.Duration(time.Second),
+	})
+	server.Use(middleware())
+	pb.RegisterGreeterServer(server.Server(), &helloServer{addr: addr})
+	go func() {
+		err := server.Run(addr)
+		if err != nil {
+			panic("run server failed!" + err.Error())
+		}
+	}()
+	return server
+}
+
+func main() {
+	log.Init(&log.Config{Stdout: true})
+	server := runServer("0.0.0.0:8080")
+	signalHandler(server)
+}
+
+//类似于中间件
+func middleware() grpc.UnaryServerInterceptor {
+	return func(ctx context.Context, req interface{}, info *grpc.UnaryServerInfo, handler grpc.UnaryHandler) (resp interface{}, err error) {
+		//记录调用方法
+		log.Info("method:%s", info.FullMethod)
+		//call chain
+		resp, err = handler(ctx, req)
+		return
+	}
+}
+
+func signalHandler(s *warden.Server) {
+	var (
+		ch = make(chan os.Signal, 1)
+	)
+	signal.Notify(ch, syscall.SIGHUP, syscall.SIGQUIT, syscall.SIGTERM, syscall.SIGINT)
+	for {
+		si := <-ch
+		switch si {
+		case syscall.SIGQUIT, syscall.SIGTERM, syscall.SIGINT:
+			log.Info("get a signal %s, stop the consume process", si.String())
+			ctx, cancel := context.WithTimeout(context.Background(), time.Second*3)
+			defer cancel()
+			//gracefully shutdown with timeout
+			s.Shutdown(ctx)
+			return
+		case syscall.SIGHUP:
+		default:
+			return
+		}
+	}
+}