frostfs-node/pkg/network/peers/peers_test.go

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2020-07-24 13:54:03 +00:00
package peers
import (
"context"
"encoding"
"encoding/json"
"net"
"strings"
"sync"
"testing"
"github.com/multiformats/go-multiaddr"
"github.com/nspcc-dev/neofs-node/pkg/network"
"github.com/stretchr/testify/require"
"google.golang.org/grpc"
)
type (
fakeAddress struct {
json.Marshaler
json.Unmarshaler
encoding.TextMarshaler
encoding.TextUnmarshaler
encoding.BinaryMarshaler
encoding.BinaryUnmarshaler
}
// service is used to implement GreaterServer.
service struct{}
)
// Hello is simple handler
func (*service) Hello(ctx context.Context, req *HelloRequest) (*HelloResponse, error) {
return &HelloResponse{
Message: "Hello " + req.Name,
}, nil
}
var _ multiaddr.Multiaddr = (*fakeAddress)(nil)
func (fakeAddress) Equal(multiaddr.Multiaddr) bool {
return false
}
func (fakeAddress) Bytes() []byte {
return nil
}
func (fakeAddress) String() string {
return "fake"
}
func (fakeAddress) Protocols() []multiaddr.Protocol {
return []multiaddr.Protocol{{Name: "fake"}}
}
func (fakeAddress) Encapsulate(multiaddr.Multiaddr) multiaddr.Multiaddr {
panic("implement me")
}
func (fakeAddress) Decapsulate(multiaddr.Multiaddr) multiaddr.Multiaddr {
panic("implement me")
}
func (fakeAddress) ValueForProtocol(code int) (string, error) {
return "", nil
}
const testCount = 10
func newTestAddress(t *testing.T) multiaddr.Multiaddr {
lis, err := net.Listen("tcp", "0.0.0.0:0") // nolint:gosec
require.NoError(t, err)
require.NoError(t, lis.Close())
l, ok := lis.(*net.TCPListener)
require.True(t, ok)
_, port, err := net.SplitHostPort(l.Addr().String())
require.NoError(t, err)
items := []string{
"ip4",
"127.0.0.1",
"tcp",
port,
}
maddr, err := multiaddr.NewMultiaddr("/" + strings.Join(items, "/"))
require.NoError(t, err)
return maddr
}
func TestInterface(t *testing.T) {
t.Run("gRPC connection test", func(t *testing.T) {
var (
err error
s Interface
h = &service{}
g = grpc.NewServer()
a1 = newTestAddress(t)
_ = h
done = make(chan struct{})
)
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
s, err = New(Params{})
require.NoError(t, err)
RegisterGreeterServer(g, h) // register service
l, err := network.Listen(a1)
require.NoError(t, err)
defer l.Close() // nolint:golint
wg := new(sync.WaitGroup)
wg.Add(1)
go func() {
close(done)
_ = g.Serve(l)
wg.Done()
}()
<-done // wait for server is start listening connections:
// Fail connection
con, err := s.GRPCConnection(ctx, &fakeAddress{})
require.Nil(t, con)
require.Error(t, err)
con, err = s.GRPCConnection(ctx, a1)
require.NoError(t, err)
cli := NewGreeterClient(con)
resp, err := cli.Hello(ctx, &HelloRequest{
Name: "Interface test",
})
require.NoError(t, err)
require.NotNil(t, resp)
require.Equal(t, "Hello Interface test", resp.Message)
g.GracefulStop()
wg.Wait()
})
t.Run("test grpc connections", func(t *testing.T) {
var (
ifaces = make([]Interface, 0, testCount)
addresses = make([]multiaddr.Multiaddr, 0, testCount)
)
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
for i := 0; i < testCount; i++ {
addresses = append(addresses, newTestAddress(t))
s, err := New(Params{})
require.NoError(t, err)
lis, err := network.Listen(addresses[i])
require.NoError(t, err)
svc := &service{}
srv := grpc.NewServer()
RegisterGreeterServer(srv, svc)
ifaces = append(ifaces, s)
go func() {
require.NoError(t, srv.Serve(lis))
}()
}
const reqName = "test"
wg := new(sync.WaitGroup)
for i := 0; i < testCount; i++ {
for j := 0; j < testCount; j++ {
wg.Add(1)
go func(i, j int) {
defer wg.Done()
con, err := ifaces[i].GRPCConnection(ctx, addresses[j])
require.NoError(t, err)
cli := NewGreeterClient(con)
resp, err := cli.Hello(ctx, &HelloRequest{Name: reqName})
require.NoError(t, err)
require.Equal(t, "Hello "+reqName, resp.Message)
require.NoError(t, con.Close())
}(i, j)
}
}
wg.Wait()
})
}