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package git
import (
"bytes"
"fmt"
"io"
"testing"
"github.com/stretchr/testify/require"
"gitlab.com/gitlab-org/gitaly/v15/proto/go/gitalypb"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/status"
"google.golang.org/protobuf/proto"
"google.golang.org/protobuf/types/known/anypb"
"google.golang.org/protobuf/types/known/durationpb"
)
func TestHandleLimitErr(t *testing.T) {
testCases := []struct {
desc string
errWriter func(io.Writer) error
expectedBytes []byte
}{
{
desc: "upload pack",
errWriter: writeUploadPackError,
expectedBytes: bytes.Join([][]byte{
[]byte{'0', '0', '4', '7'},
[]byte("ERR GitLab is currently unable to handle this request due to load.\n"),
}, []byte{}),
},
{
desc: "receive pack",
errWriter: writeReceivePackError,
expectedBytes: bytes.Join([][]byte{
{'0', '0', '2', '3', 1, '0', '0', '1', 'a'},
[]byte("unpack server is busy\n"),
{'0', '0', '0', '0', '0', '0', '4', '4', 2},
[]byte("GitLab is currently unable to handle this request due to load.\n"),
{'0', '0', '0', '0'},
}, []byte{}),
},
}
for _, tc := range testCases {
t.Run(tc.desc, func(t *testing.T) {
var body bytes.Buffer
err := errWithDetail(t, &gitalypb.LimitError{
ErrorMessage: "concurrency queue wait time reached",
RetryAfter: durationpb.New(0)})
handleLimitErr(fmt.Errorf("wrapped error: %w", err), &body, tc.errWriter)
require.Equal(t, tc.expectedBytes, body.Bytes())
})
}
t.Run("non LimitError", func(t *testing.T) {
var body bytes.Buffer
err := status.Error(codes.Internal, "some internal error")
handleLimitErr(fmt.Errorf("wrapped error: %w", err), &body, writeUploadPackError)
require.Equal(t, []byte(nil), body.Bytes())
handleLimitErr(fmt.Errorf("wrapped error: %w", err), &body, writeReceivePackError)
require.Equal(t, []byte(nil), body.Bytes())
})
}
// errWithDetail adds the given details to the error if it is a gRPC status whose code is not OK.
func errWithDetail(t *testing.T, detail proto.Message) error {
st := status.New(codes.Unavailable, "too busy")
proto := st.Proto()
marshaled, err := anypb.New(detail)
require.NoError(t, err)
proto.Details = append(proto.Details, marshaled)
return status.ErrorProto(proto)
}
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