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package reverse_tunnel
import (
"context"
"errors"
"io"
"testing"
"time"
"github.com/golang/mock/gomock"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"gitlab.com/gitlab-org/cluster-integration/gitlab-agent/v16/internal/module/reverse_tunnel/rpc"
"gitlab.com/gitlab-org/cluster-integration/gitlab-agent/v16/internal/tool/grpctool"
"gitlab.com/gitlab-org/cluster-integration/gitlab-agent/v16/internal/tool/testing/matcher"
"gitlab.com/gitlab-org/cluster-integration/gitlab-agent/v16/internal/tool/testing/mock_reverse_tunnel_rpc"
"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"
statuspb "google.golang.org/genproto/googleapis/rpc/status"
"google.golang.org/grpc"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/status"
)
var (
_ Tunnel = &tunnel{}
)
func TestTunnel_ForwardStream_VisitorErrorIsReturnedOnErrorMessageAndReadError(t *testing.T) {
ctrl := gomock.NewController(t)
tunnelRetErr := make(chan error)
tunnelStreamVisitor, err := grpctool.NewStreamVisitor(&rpc.ConnectRequest{})
require.NoError(t, err)
connectServer := mock_reverse_tunnel_rpc.NewMockReverseTunnel_ConnectServer(ctrl)
incomingStream := mock_rpc.NewMockServerStream(ctrl)
sts := mock_rpc.NewMockServerTransportStream(ctrl)
incomingCtx := grpc.NewContextWithServerTransportStream(context.Background(), sts)
cb := NewMockTunnelDataCallback(ctrl)
incomingStream.EXPECT().
Context().
Return(incomingCtx).
MinTimes(1)
sts.EXPECT().
Method().
Return("some method")
gomock.InOrder(
connectServer.EXPECT().
Send(gomock.Any()),
incomingStream.EXPECT().
RecvMsg(gomock.Any()).
DoAndReturn(func(x interface{}) error {
<-tunnelRetErr // wait until the other goroutine finished
return errors.New("failed read")
}),
)
stat := &statuspb.Status{
Code: int32(codes.DataLoss),
Message: "expected data loss",
}
gomock.InOrder(
connectServer.EXPECT().
RecvMsg(gomock.Any()).
Do(testhelpers.RecvMsg(&rpc.ConnectRequest{
Msg: &rpc.ConnectRequest_Error{
Error: &rpc.Error{
Status: stat,
},
},
})),
cb.EXPECT().
Error(matcher.ProtoEq(t, stat)),
connectServer.EXPECT().
RecvMsg(gomock.Any()).
Return(errors.New("correct error")),
)
c := tunnel{
tunnel: connectServer,
tunnelStreamVisitor: tunnelStreamVisitor,
tunnelRetErr: tunnelRetErr,
onForward: func(t *tunnel) error {
return nil
},
onDone: func(t *tunnel) {},
}
err = c.ForwardStream(nil, nil, incomingStream, cb)
assert.EqualError(t, err, "correct error")
}
func TestTunnel_ForwardStream_IsUnblockedWhenIncomingStreamContextIsCancelledAfterSendingAllData(t *testing.T) {
t.Parallel()
ctrl := gomock.NewController(t)
tunnelRetErr := make(chan error, 1)
tunnelStreamVisitor, err := grpctool.NewStreamVisitor(&rpc.ConnectRequest{})
require.NoError(t, err)
connectServer := mock_reverse_tunnel_rpc.NewMockReverseTunnel_ConnectServer(ctrl)
incomingStream := mock_rpc.NewMockServerStream(ctrl)
sts := mock_rpc.NewMockServerTransportStream(ctrl)
incomingCtx, cancel := context.WithTimeout(context.Background(), 50*time.Millisecond)
defer cancel()
incomingCtx = grpc.NewContextWithServerTransportStream(incomingCtx, sts)
cb := NewMockTunnelDataCallback(ctrl)
incomingStream.EXPECT().
Context().
Return(incomingCtx).
MinTimes(1)
sts.EXPECT().
Method().
Return("some method")
gomock.InOrder( //
connectServer.EXPECT().
Send(gomock.Any()), // ConnectResponse_RequestInfo
incomingStream.EXPECT().
RecvMsg(gomock.Any()).
Return(io.EOF),
connectServer.EXPECT().
Send(gomock.Any()), // ConnectResponse_CloseSend
)
recvChan := make(chan struct{})
connectServer.EXPECT().
RecvMsg(gomock.Any()).
DoAndReturn(func(msg interface{}) error {
<-recvChan
return status.Error(codes.DataLoss, "boom")
})
c := tunnel{
tunnel: connectServer,
tunnelStreamVisitor: tunnelStreamVisitor,
tunnelRetErr: tunnelRetErr,
onForward: func(t *tunnel) error {
return nil
},
onDone: func(t *tunnel) {},
}
err = c.ForwardStream(nil, nil, incomingStream, cb)
assert.EqualError(t, err, "rpc error: code = DeadlineExceeded desc = Incoming stream closed: context deadline exceeded")
err = <-tunnelRetErr
assert.EqualError(t, err, "rpc error: code = DeadlineExceeded desc = Incoming stream closed: context deadline exceeded")
close(recvChan) // unblock recv
}
|
