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|
package operations
import (
"context"
"errors"
"fmt"
"gitlab.com/gitlab-org/gitaly/v14/internal/git"
"gitlab.com/gitlab-org/gitaly/v14/internal/git/localrepo"
"gitlab.com/gitlab-org/gitaly/v14/internal/git/remoterepo"
"gitlab.com/gitlab-org/gitaly/v14/internal/git/updateref"
"gitlab.com/gitlab-org/gitaly/v14/internal/git2go"
"gitlab.com/gitlab-org/gitaly/v14/internal/helper"
"gitlab.com/gitlab-org/gitaly/v14/proto/go/gitalypb"
)
//nolint: revive,stylecheck // This is unintentionally missing documentation.
func (s *Server) UserRevert(ctx context.Context, req *gitalypb.UserRevertRequest) (*gitalypb.UserRevertResponse, error) {
if err := validateCherryPickOrRevertRequest(req); err != nil {
return nil, helper.ErrInvalidArgument(err)
}
quarantineDir, quarantineRepo, err := s.quarantinedRepo(ctx, req.GetRepository())
if err != nil {
return nil, err
}
startRevision, err := s.fetchStartRevision(ctx, quarantineRepo, req)
if err != nil {
return nil, err
}
repoHadBranches, err := quarantineRepo.HasBranches(ctx)
if err != nil {
return nil, err
}
repoPath, err := quarantineRepo.Path()
if err != nil {
return nil, helper.ErrInternalf("get path: %w", err)
}
var mainline uint
if len(req.Commit.ParentIds) > 1 {
mainline = 1
}
authorDate, err := dateFromProto(req)
if err != nil {
return nil, helper.ErrInvalidArgument(err)
}
newrev, err := s.git2goExecutor.Revert(ctx, quarantineRepo, git2go.RevertCommand{
Repository: repoPath,
AuthorName: string(req.User.Name),
AuthorMail: string(req.User.Email),
AuthorDate: authorDate,
Message: string(req.Message),
Ours: startRevision.String(),
Revert: req.Commit.Id,
Mainline: mainline,
})
if err != nil {
if errors.As(err, &git2go.HasConflictsError{}) {
return &gitalypb.UserRevertResponse{
CreateTreeError: err.Error(),
CreateTreeErrorCode: gitalypb.UserRevertResponse_CONFLICT,
}, nil
} else if errors.As(err, &git2go.EmptyError{}) {
return &gitalypb.UserRevertResponse{
CreateTreeError: err.Error(),
CreateTreeErrorCode: gitalypb.UserRevertResponse_EMPTY,
}, nil
} else if errors.Is(err, git2go.ErrInvalidArgument) {
return nil, helper.ErrInvalidArgument(err)
} else {
return nil, helper.ErrInternalf("revert command: %w", err)
}
}
referenceName := git.NewReferenceNameFromBranchName(string(req.BranchName))
branchCreated := false
oldrev, err := quarantineRepo.ResolveRevision(ctx, referenceName.Revision()+"^{commit}")
if errors.Is(err, git.ErrReferenceNotFound) {
branchCreated = true
oldrev = git.ZeroOID
} else if err != nil {
return nil, helper.ErrInvalidArgumentf("resolve ref: %w", err)
}
if req.DryRun {
newrev = startRevision
}
if !branchCreated {
ancestor, err := quarantineRepo.IsAncestor(ctx, oldrev.Revision(), newrev.Revision())
if err != nil {
return nil, err
}
if !ancestor {
return &gitalypb.UserRevertResponse{
CommitError: "Branch diverged",
}, nil
}
}
if err := s.updateReferenceWithHooks(ctx, req.GetRepository(), req.User, quarantineDir, referenceName, newrev, oldrev); err != nil {
var hookError updateref.HookError
if errors.As(err, &hookError) {
return &gitalypb.UserRevertResponse{
PreReceiveError: hookError.Error(),
}, nil
}
return nil, fmt.Errorf("update reference with hooks: %w", err)
}
return &gitalypb.UserRevertResponse{
BranchUpdate: &gitalypb.OperationBranchUpdate{
CommitId: newrev.String(),
BranchCreated: branchCreated,
RepoCreated: !repoHadBranches,
},
}, nil
}
type requestFetchingStartRevision interface {
GetBranchName() []byte
GetStartRepository() *gitalypb.Repository
GetStartBranchName() []byte
}
func (s *Server) fetchStartRevision(
ctx context.Context,
localRepo *localrepo.Repo,
req requestFetchingStartRevision,
) (git.ObjectID, error) {
startBranchName := req.GetStartBranchName()
if len(startBranchName) == 0 {
startBranchName = req.GetBranchName()
}
var remoteRepo git.Repository = localRepo
if startRepository := req.GetStartRepository(); startRepository != nil {
var err error
remoteRepo, err = remoterepo.New(ctx, startRepository, s.conns)
if err != nil {
return "", helper.ErrInternal(err)
}
}
startRevision, err := remoteRepo.ResolveRevision(ctx, git.Revision(fmt.Sprintf("%s^{commit}", startBranchName)))
if err != nil {
return "", helper.ErrInvalidArgumentf("resolve start ref: %w", err)
}
if req.GetStartRepository() == nil {
return startRevision, nil
}
_, err = localRepo.ResolveRevision(ctx, startRevision.Revision()+"^{commit}")
if errors.Is(err, git.ErrReferenceNotFound) {
if err := localRepo.FetchInternal(
ctx,
req.GetStartRepository(),
[]string{startRevision.String()},
localrepo.FetchOpts{Tags: localrepo.FetchOptsTagsNone},
); err != nil {
return "", helper.ErrInternalf("fetch start: %w", err)
}
} else if err != nil {
return "", helper.ErrInvalidArgumentf("resolve start: %w", err)
}
return startRevision, nil
}
|
