debian-mirror-gitlab/workhorse/internal/testhelper/gitaly.go
2021-02-22 17:27:13 +05:30

384 lines
9.4 KiB
Go

package testhelper
import (
"fmt"
"io"
"io/ioutil"
"path"
"strings"
"sync"
"github.com/golang/protobuf/jsonpb" //lint:ignore SA1019 https://gitlab.com/gitlab-org/gitlab-workhorse/-/issues/274
"github.com/golang/protobuf/proto" //lint:ignore SA1019 https://gitlab.com/gitlab-org/gitlab-workhorse/-/issues/274
"gitlab.com/gitlab-org/gitaly/proto/go/gitalypb"
"gitlab.com/gitlab-org/labkit/log"
"golang.org/x/net/context"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/metadata"
"google.golang.org/grpc/status"
)
type GitalyTestServer struct {
finalMessageCode codes.Code
sync.WaitGroup
LastIncomingMetadata metadata.MD
gitalypb.UnimplementedRepositoryServiceServer
gitalypb.UnimplementedBlobServiceServer
gitalypb.UnimplementedDiffServiceServer
}
var (
GitalyInfoRefsResponseMock = strings.Repeat("Mock Gitaly InfoRefsResponse data", 100000)
GitalyGetBlobResponseMock = strings.Repeat("Mock Gitaly GetBlobResponse data", 100000)
GitalyGetArchiveResponseMock = strings.Repeat("Mock Gitaly GetArchiveResponse data", 100000)
GitalyGetDiffResponseMock = strings.Repeat("Mock Gitaly GetDiffResponse data", 100000)
GitalyGetPatchResponseMock = strings.Repeat("Mock Gitaly GetPatchResponse data", 100000)
GitalyGetSnapshotResponseMock = strings.Repeat("Mock Gitaly GetSnapshotResponse data", 100000)
GitalyReceivePackResponseMock []byte
GitalyUploadPackResponseMock []byte
)
func init() {
var err error
if GitalyReceivePackResponseMock, err = ioutil.ReadFile(path.Join(RootDir(), "testdata/receive-pack-fixture.txt")); err != nil {
log.WithError(err).Fatal("Unable to read pack response")
}
if GitalyUploadPackResponseMock, err = ioutil.ReadFile(path.Join(RootDir(), "testdata/upload-pack-fixture.txt")); err != nil {
log.WithError(err).Fatal("Unable to read pack response")
}
}
func NewGitalyServer(finalMessageCode codes.Code) *GitalyTestServer {
return &GitalyTestServer{finalMessageCode: finalMessageCode}
}
func (s *GitalyTestServer) InfoRefsUploadPack(in *gitalypb.InfoRefsRequest, stream gitalypb.SmartHTTPService_InfoRefsUploadPackServer) error {
s.WaitGroup.Add(1)
defer s.WaitGroup.Done()
if err := validateRepository(in.GetRepository()); err != nil {
return err
}
fmt.Printf("Result: %+v\n", in)
marshaler := &jsonpb.Marshaler{}
jsonString, err := marshaler.MarshalToString(in)
if err != nil {
return err
}
data := []byte(strings.Join([]string{
jsonString,
"git-upload-pack",
GitalyInfoRefsResponseMock,
}, "\000"))
s.LastIncomingMetadata = nil
if md, ok := metadata.FromIncomingContext(stream.Context()); ok {
s.LastIncomingMetadata = md
}
return s.sendInfoRefs(stream, data)
}
func (s *GitalyTestServer) InfoRefsReceivePack(in *gitalypb.InfoRefsRequest, stream gitalypb.SmartHTTPService_InfoRefsReceivePackServer) error {
s.WaitGroup.Add(1)
defer s.WaitGroup.Done()
if err := validateRepository(in.GetRepository()); err != nil {
return err
}
fmt.Printf("Result: %+v\n", in)
jsonString, err := marshalJSON(in)
if err != nil {
return err
}
data := []byte(strings.Join([]string{
jsonString,
"git-receive-pack",
GitalyInfoRefsResponseMock,
}, "\000"))
return s.sendInfoRefs(stream, data)
}
func marshalJSON(msg proto.Message) (string, error) {
marshaler := &jsonpb.Marshaler{}
return marshaler.MarshalToString(msg)
}
type infoRefsSender interface {
Send(*gitalypb.InfoRefsResponse) error
}
func (s *GitalyTestServer) sendInfoRefs(stream infoRefsSender, data []byte) error {
nSends, err := sendBytes(data, 100, func(p []byte) error {
return stream.Send(&gitalypb.InfoRefsResponse{Data: p})
})
if err != nil {
return err
}
if nSends <= 1 {
panic("should have sent more than one message")
}
return s.finalError()
}
func (s *GitalyTestServer) PostReceivePack(stream gitalypb.SmartHTTPService_PostReceivePackServer) error {
s.WaitGroup.Add(1)
defer s.WaitGroup.Done()
req, err := stream.Recv()
if err != nil {
return err
}
repo := req.GetRepository()
if err := validateRepository(repo); err != nil {
return err
}
jsonString, err := marshalJSON(req)
if err != nil {
return err
}
data := []byte(jsonString + "\000")
// The body of the request starts in the second message
for {
req, err := stream.Recv()
if err != nil {
if err != io.EOF {
return err
}
break
}
// We want to echo the request data back
data = append(data, req.GetData()...)
}
nSends, _ := sendBytes(data, 100, func(p []byte) error {
return stream.Send(&gitalypb.PostReceivePackResponse{Data: p})
})
if nSends <= 1 {
panic("should have sent more than one message")
}
return s.finalError()
}
func (s *GitalyTestServer) PostUploadPack(stream gitalypb.SmartHTTPService_PostUploadPackServer) error {
s.WaitGroup.Add(1)
defer s.WaitGroup.Done()
req, err := stream.Recv()
if err != nil {
return err
}
if err := validateRepository(req.GetRepository()); err != nil {
return err
}
jsonString, err := marshalJSON(req)
if err != nil {
return err
}
if err := stream.Send(&gitalypb.PostUploadPackResponse{
Data: []byte(strings.Join([]string{jsonString}, "\000") + "\000"),
}); err != nil {
return err
}
nSends := 0
// The body of the request starts in the second message. Gitaly streams PostUploadPack responses
// as soon as possible without reading the request completely first. We stream messages here
// directly back to the client to simulate the streaming of the actual implementation.
for {
req, err := stream.Recv()
if err != nil {
if err != io.EOF {
return err
}
break
}
if err := stream.Send(&gitalypb.PostUploadPackResponse{Data: req.GetData()}); err != nil {
return err
}
nSends++
}
if nSends <= 1 {
panic("should have sent more than one message")
}
return s.finalError()
}
func (s *GitalyTestServer) CommitIsAncestor(ctx context.Context, in *gitalypb.CommitIsAncestorRequest) (*gitalypb.CommitIsAncestorResponse, error) {
return nil, nil
}
func (s *GitalyTestServer) GetBlob(in *gitalypb.GetBlobRequest, stream gitalypb.BlobService_GetBlobServer) error {
s.WaitGroup.Add(1)
defer s.WaitGroup.Done()
if err := validateRepository(in.GetRepository()); err != nil {
return err
}
response := &gitalypb.GetBlobResponse{
Oid: in.GetOid(),
Size: int64(len(GitalyGetBlobResponseMock)),
}
nSends, err := sendBytes([]byte(GitalyGetBlobResponseMock), 100, func(p []byte) error {
response.Data = p
if err := stream.Send(response); err != nil {
return err
}
// Use a new response so we don't send other fields (Size, ...) over and over
response = &gitalypb.GetBlobResponse{}
return nil
})
if err != nil {
return err
}
if nSends <= 1 {
panic("should have sent more than one message")
}
return s.finalError()
}
func (s *GitalyTestServer) GetArchive(in *gitalypb.GetArchiveRequest, stream gitalypb.RepositoryService_GetArchiveServer) error {
s.WaitGroup.Add(1)
defer s.WaitGroup.Done()
if err := validateRepository(in.GetRepository()); err != nil {
return err
}
nSends, err := sendBytes([]byte(GitalyGetArchiveResponseMock), 100, func(p []byte) error {
return stream.Send(&gitalypb.GetArchiveResponse{Data: p})
})
if err != nil {
return err
}
if nSends <= 1 {
panic("should have sent more than one message")
}
return s.finalError()
}
func (s *GitalyTestServer) RawDiff(in *gitalypb.RawDiffRequest, stream gitalypb.DiffService_RawDiffServer) error {
nSends, err := sendBytes([]byte(GitalyGetDiffResponseMock), 100, func(p []byte) error {
return stream.Send(&gitalypb.RawDiffResponse{
Data: p,
})
})
if err != nil {
return err
}
if nSends <= 1 {
panic("should have sent more than one message")
}
return s.finalError()
}
func (s *GitalyTestServer) RawPatch(in *gitalypb.RawPatchRequest, stream gitalypb.DiffService_RawPatchServer) error {
s.WaitGroup.Add(1)
defer s.WaitGroup.Done()
if err := validateRepository(in.GetRepository()); err != nil {
return err
}
nSends, err := sendBytes([]byte(GitalyGetPatchResponseMock), 100, func(p []byte) error {
return stream.Send(&gitalypb.RawPatchResponse{
Data: p,
})
})
if err != nil {
return err
}
if nSends <= 1 {
panic("should have sent more than one message")
}
return s.finalError()
}
func (s *GitalyTestServer) GetSnapshot(in *gitalypb.GetSnapshotRequest, stream gitalypb.RepositoryService_GetSnapshotServer) error {
s.WaitGroup.Add(1)
defer s.WaitGroup.Done()
if err := validateRepository(in.GetRepository()); err != nil {
return err
}
nSends, err := sendBytes([]byte(GitalyGetSnapshotResponseMock), 100, func(p []byte) error {
return stream.Send(&gitalypb.GetSnapshotResponse{Data: p})
})
if err != nil {
return err
}
if nSends <= 1 {
panic("should have sent more than one message")
}
return s.finalError()
}
// sendBytes returns the number of times the 'sender' function was called and an error.
func sendBytes(data []byte, chunkSize int, sender func([]byte) error) (int, error) {
i := 0
for ; len(data) > 0; i++ {
n := chunkSize
if n > len(data) {
n = len(data)
}
if err := sender(data[:n]); err != nil {
return i, err
}
data = data[n:]
}
return i, nil
}
func (s *GitalyTestServer) finalError() error {
if code := s.finalMessageCode; code != codes.OK {
return status.Errorf(code, "error as specified by test")
}
return nil
}
func validateRepository(repo *gitalypb.Repository) error {
if len(repo.GetStorageName()) == 0 {
return fmt.Errorf("missing storage_name: %v", repo)
}
if len(repo.GetRelativePath()) == 0 {
return fmt.Errorf("missing relative_path: %v", repo)
}
return nil
}