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package tunserver
import (
"errors"
"io"
"testing"
"time"
"github.com/stretchr/testify/require"
"gitlab.com/gitlab-org/cluster-integration/gitlab-agent/v16/internal/tool/testing/mock_modshared"
"gitlab.com/gitlab-org/cluster-integration/gitlab-agent/v16/internal/tool/testing/mock_rpc"
"gitlab.com/gitlab-org/cluster-integration/gitlab-agent/v16/internal/tool/testing/testhelpers"
"gitlab.com/gitlab-org/cluster-integration/gitlab-agent/v16/internal/tunnel/rpc"
"go.uber.org/mock/gomock"
"go.uber.org/zap/zaptest"
statuspb "google.golang.org/genproto/googleapis/rpc/status"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/status"
)
func TestStreamForwarder_ErrorFromRecvOnSendEOF(t *testing.T) {
f, kasStream, stream := setupForwarder(t)
sendDone := make(chan struct{})
// pipeFromKASToStream
kasStream.EXPECT().
RecvMsg(gomock.Any()).
DoAndReturn(func(m interface{}) error {
<-sendDone
time.Sleep(20 * time.Millisecond)
return status.Error(codes.InvalidArgument, "expected error from RecvMsg")
})
gomock.InOrder( // pipeFromStreamToKAS
stream.EXPECT().
RecvMsg(gomock.Any()),
kasStream.EXPECT().
SendMsg(gomock.Any()).
DoAndReturn(func(m interface{}) error {
close(sendDone)
return io.EOF // there is an error, call RecvMsg() to get it
}),
)
err := f.ForwardStream(kasStream, stream)
require.EqualError(t, err, "rpc error: code = InvalidArgument desc = expected error from RecvMsg")
}
func TestStreamForwarder_VisitorErrorPreferredToGatewayError(t *testing.T) {
f, kasStream, stream := setupForwarder(t)
stop := make(chan struct{})
stopped := make(chan struct{})
gomock.InOrder( // pipeFromKASToStream
kasStream.EXPECT().
RecvMsg(gomock.Any()).
Do(testhelpers.RecvMsg(&rpc.GatewayResponse{
Msg: &rpc.GatewayResponse_Header_{
Header: &rpc.GatewayResponse_Header{},
},
})),
stream.EXPECT().
SetHeader(gomock.Any()),
kasStream.EXPECT().
RecvMsg(gomock.Any()).
Do(testhelpers.RecvMsg(&rpc.GatewayResponse{
Msg: &rpc.GatewayResponse_Trailer_{
Trailer: &rpc.GatewayResponse_Trailer{},
},
})),
stream.EXPECT().
SetTrailer(gomock.Any()),
kasStream.EXPECT().
RecvMsg(gomock.Any()).
Do(testhelpers.RecvMsg(&rpc.GatewayResponse{
Msg: &rpc.GatewayResponse_Error_{
Error: &rpc.GatewayResponse_Error{
Status: &statuspb.Status{
Code: int32(codes.NotFound),
Message: "something not found",
},
},
},
})),
kasStream.EXPECT().
RecvMsg(gomock.Any()).
Return(errors.New("visitor error")),
)
gomock.InOrder( // pipeFromStreamToKAS
stream.EXPECT().
RecvMsg(gomock.Any()).
DoAndReturn(func(m interface{}) error {
<-stop // as if this method is blocked on reading from the client
return io.EOF
}),
kasStream.EXPECT().
CloseSend().
Do(func() error {
close(stopped)
return nil
}),
)
err := f.ForwardStream(kasStream, stream)
require.EqualError(t, err, "visitor error")
// ForwardStream returned before stream.RecvMsg(), aborting it, as expected.
close(stop) // Unblock stream.RecvMsg()
<-stopped
}
func TestStreamForwarder_GatewayError(t *testing.T) {
f, kasStream, stream := setupForwarder(t)
stop := make(chan struct{})
stopped := make(chan struct{})
gomock.InOrder( // pipeFromKASToStream
kasStream.EXPECT().
RecvMsg(gomock.Any()).
Do(testhelpers.RecvMsg(&rpc.GatewayResponse{
Msg: &rpc.GatewayResponse_Header_{
Header: &rpc.GatewayResponse_Header{},
},
})),
stream.EXPECT().
SetHeader(gomock.Any()),
kasStream.EXPECT().
RecvMsg(gomock.Any()).
Do(testhelpers.RecvMsg(&rpc.GatewayResponse{
Msg: &rpc.GatewayResponse_Trailer_{
Trailer: &rpc.GatewayResponse_Trailer{},
},
})),
stream.EXPECT().
SetTrailer(gomock.Any()),
kasStream.EXPECT().
RecvMsg(gomock.Any()).
Do(testhelpers.RecvMsg(&rpc.GatewayResponse{
Msg: &rpc.GatewayResponse_Error_{
Error: &rpc.GatewayResponse_Error{
Status: &statuspb.Status{
Code: int32(codes.NotFound),
Message: "something not found",
},
},
},
})),
kasStream.EXPECT().
RecvMsg(gomock.Any()).
Return(io.EOF),
)
gomock.InOrder( // pipeFromStreamToKAS
stream.EXPECT().
RecvMsg(gomock.Any()).
DoAndReturn(func(m any) error {
<-stop // as if this method is blocked on reading from the client
return io.EOF
}),
kasStream.EXPECT().
CloseSend().
Do(func() error {
close(stopped)
return nil
}),
)
err := f.ForwardStream(kasStream, stream)
require.EqualError(t, err, "rpc error: code = NotFound desc = something not found")
// ForwardStream returned before stream.RecvMsg(), aborting it, as expected.
close(stop) // Unblock stream.RecvMsg()
<-stopped
}
func setupForwarder(t *testing.T) (*kasStreamForwarder, *mock_rpc.MockClientStream, *mock_rpc.MockServerStream) {
ctrl := gomock.NewController(t)
rpcAPI := mock_modshared.NewMockRPCAPI(ctrl)
kasStream := mock_rpc.NewMockClientStream(ctrl)
stream := mock_rpc.NewMockServerStream(ctrl)
f := &kasStreamForwarder{
log: zaptest.NewLogger(t),
rpcAPI: rpcAPI,
}
return f, kasStream, stream
}
|
