micro/server/grpc/grpc_test.go

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package grpc_test
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import (
"context"
"fmt"
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"testing"
bmemory "github.com/micro/go-micro/v3/broker/memory"
"github.com/micro/go-micro/v3/client"
gcli "github.com/micro/go-micro/v3/client/grpc"
"github.com/micro/go-micro/v3/errors"
pberr "github.com/micro/go-micro/v3/errors/proto"
rmemory "github.com/micro/go-micro/v3/registry/memory"
"github.com/micro/go-micro/v3/router"
rtreg "github.com/micro/go-micro/v3/router/registry"
"github.com/micro/go-micro/v3/server"
gsrv "github.com/micro/go-micro/v3/server/grpc"
pb "github.com/micro/go-micro/v3/server/grpc/proto"
tgrpc "github.com/micro/go-micro/v3/transport/grpc"
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"google.golang.org/grpc"
"google.golang.org/grpc/status"
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)
// server is used to implement helloworld.GreeterServer.
type testServer struct {
msgCount int
}
func (s *testServer) Handle(ctx context.Context, msg *pb.Request) error {
s.msgCount++
return nil
}
func (s *testServer) HandleError(ctx context.Context, msg *pb.Request) error {
return fmt.Errorf("fake")
}
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// TestHello implements helloworld.GreeterServer
func (s *testServer) CallPcre(ctx context.Context, req *pb.Request, rsp *pb.Response) error {
if req.Name == "Error" {
return &errors.Error{Id: "1", Code: 99, Detail: "detail"}
}
rsp.Msg = "Hello " + req.Name
return nil
}
// TestHello implements helloworld.GreeterServer
func (s *testServer) CallPcreInvalid(ctx context.Context, req *pb.Request, rsp *pb.Response) error {
if req.Name == "Error" {
return &errors.Error{Id: "1", Code: 99, Detail: "detail"}
}
rsp.Msg = "Hello " + req.Name
return nil
}
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// TestHello implements helloworld.GreeterServer
func (s *testServer) Call(ctx context.Context, req *pb.Request, rsp *pb.Response) error {
if req.Name == "Error" {
return &errors.Error{Id: "1", Code: 99, Detail: "detail"}
}
if req.Name == "Panic" {
// make it panic
panic("handler panic")
}
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rsp.Msg = "Hello " + req.Name
return nil
}
/*
func BenchmarkServer(b *testing.B) {
r := rmemory.NewRegistry()
br := bmemory.NewBroker()
tr := tgrpc.NewTransport()
s := gsrv.NewServer(
server.Broker(br),
server.Name("foo"),
server.Registry(r),
server.Transport(tr),
)
c := gcli.NewClient(
client.Registry(r),
client.Broker(br),
client.Transport(tr),
)
ctx := context.TODO()
h := &testServer{}
pb.RegisterTestHandler(s, h)
if err := s.Start(); err != nil {
b.Fatalf("failed to start: %v", err)
}
// check registration
services, err := r.GetService("foo")
if err != nil || len(services) == 0 {
b.Fatalf("failed to get service: %v # %d", err, len(services))
}
defer func() {
if err := s.Stop(); err != nil {
b.Fatalf("failed to stop: %v", err)
}
}()
b.ResetTimer()
for i := 0; i < b.N; i++ {
c.Call()
}
}
*/
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func TestGRPCServer(t *testing.T) {
r := rmemory.NewRegistry()
b := bmemory.NewBroker()
tr := tgrpc.NewTransport()
rtr := rtreg.NewRouter(router.Registry(r))
s := gsrv.NewServer(
server.Broker(b),
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server.Name("foo"),
server.Registry(r),
server.Transport(tr),
)
c := gcli.NewClient(
client.Router(rtr),
client.Broker(b),
client.Transport(tr),
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)
ctx := context.TODO()
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h := &testServer{}
pb.RegisterTestHandler(s, h)
if err := s.Subscribe(s.NewSubscriber("test_topic", h.Handle)); err != nil {
t.Fatal(err)
}
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if err := s.Start(); err != nil {
t.Fatalf("failed to start: %v", err)
}
// check registration
services, err := r.GetService("foo")
if err != nil || len(services) == 0 {
t.Fatalf("failed to get service: %v # %d", err, len(services))
}
defer func() {
if err := s.Stop(); err != nil {
t.Fatalf("failed to stop: %v", err)
}
}()
cnt := 4
for i := 0; i < cnt; i++ {
msg := c.NewMessage("test_topic", &pb.Request{Name: fmt.Sprintf("msg %d", i)})
if err = c.Publish(ctx, msg); err != nil {
t.Fatal(err)
}
}
if h.msgCount != cnt {
t.Fatalf("pub/sub not work, or invalid message count %d", h.msgCount)
}
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cc, err := grpc.Dial(s.Options().Address, grpc.WithInsecure())
if err != nil {
t.Fatalf("failed to dial server: %v", err)
}
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testMethods := []string{"/test.Test/Call", "/go.micro.test.Test/Call"}
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for _, method := range testMethods {
rsp := pb.Response{}
if err := cc.Invoke(context.Background(), method, &pb.Request{Name: "John"}, &rsp); err != nil {
t.Fatalf("error calling server: %v", err)
}
if rsp.Msg != "Hello John" {
t.Fatalf("Got unexpected response %v", rsp.Msg)
}
}
// Test grpc error
rsp := pb.Response{}
if err := cc.Invoke(context.Background(), "/test.Test/Call", &pb.Request{Name: "Error"}, &rsp); err != nil {
st, ok := status.FromError(err)
if !ok {
t.Fatalf("invalid error received %#+v\n", err)
}
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verr, ok := st.Details()[0].(*pberr.Error)
if !ok {
t.Fatalf("invalid error received %#+v\n", st.Details()[0])
}
if verr.Code != 99 && verr.Id != "1" && verr.Detail != "detail" {
t.Fatalf("invalid error received %#+v\n", verr)
}
}
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}
// TestGRPCServerWithPanicWrapper test grpc server with panic wrapper
// gRPC server should not crash when wrapper crashed
func TestGRPCServerWithPanicWrapper(t *testing.T) {
r := rmemory.NewRegistry()
b := bmemory.NewBroker()
tr := tgrpc.NewTransport()
s := gsrv.NewServer(
server.Broker(b),
server.Name("foo"),
server.Registry(r),
server.Transport(tr),
server.WrapHandler(func(hf server.HandlerFunc) server.HandlerFunc {
return func(ctx context.Context, req server.Request, rsp interface{}) error {
// make it panic
panic("wrapper panic")
}
}),
)
h := &testServer{}
pb.RegisterTestHandler(s, h)
if err := s.Start(); err != nil {
t.Fatalf("failed to start: %v", err)
}
// check registration
services, err := r.GetService("foo")
if err != nil || len(services) == 0 {
t.Fatalf("failed to get service: %v # %d", err, len(services))
}
defer func() {
if err := s.Stop(); err != nil {
t.Fatalf("failed to stop: %v", err)
}
}()
cc, err := grpc.Dial(s.Options().Address, grpc.WithInsecure())
if err != nil {
t.Fatalf("failed to dial server: %v", err)
}
rsp := pb.Response{}
if err := cc.Invoke(context.Background(), "/test.Test/Call", &pb.Request{Name: "John"}, &rsp); err == nil {
t.Fatal("this must return error, as wrapper should be panic")
}
// both wrapper and handler should panic
rsp = pb.Response{}
if err := cc.Invoke(context.Background(), "/test.Test/Call", &pb.Request{Name: "Panic"}, &rsp); err == nil {
t.Fatal("this must return error, as wrapper and handler should be panic")
}
}
// TestGRPCServerWithPanicWrapper test grpc server with panic handler
// gRPC server should not crash when handler crashed
func TestGRPCServerWithPanicHandler(t *testing.T) {
r := rmemory.NewRegistry()
b := bmemory.NewBroker()
tr := tgrpc.NewTransport()
s := gsrv.NewServer(
server.Broker(b),
server.Name("foo"),
server.Registry(r),
server.Transport(tr),
)
h := &testServer{}
pb.RegisterTestHandler(s, h)
if err := s.Start(); err != nil {
t.Fatalf("failed to start: %v", err)
}
// check registration
services, err := r.GetService("foo")
if err != nil || len(services) == 0 {
t.Fatalf("failed to get service: %v # %d", err, len(services))
}
defer func() {
if err := s.Stop(); err != nil {
t.Fatalf("failed to stop: %v", err)
}
}()
cc, err := grpc.Dial(s.Options().Address, grpc.WithInsecure())
if err != nil {
t.Fatalf("failed to dial server: %v", err)
}
rsp := pb.Response{}
if err := cc.Invoke(context.Background(), "/test.Test/Call", &pb.Request{Name: "Panic"}, &rsp); err == nil {
t.Fatal("this must return error, as handler should be panic")
}
}