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package praefect
import (
"fmt"
"gitlab.com/gitlab-org/gitaly/v14/internal/praefect/datastore"
"gitlab.com/gitlab-org/gitaly/v14/proto/go/gitalypb"
"google.golang.org/grpc"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/status"
)
var (
errMissingRepository = status.Error(codes.InvalidArgument, "missing repository")
errMissingStorageName = status.Error(codes.InvalidArgument, "repository missing storage name")
errMissingRelativePath = status.Error(codes.InvalidArgument, "repository missing relative path")
)
// RepositoryExistsHandler handles /gitaly.RepositoryService/RepositoryExists calls by checking
// whether there is a record of the repository in the database.
func RepositoryExistsHandler(rs datastore.RepositoryStore) grpc.StreamHandler {
return func(srv interface{}, stream grpc.ServerStream) error {
var req gitalypb.RepositoryExistsRequest
if err := stream.RecvMsg(&req); err != nil {
return fmt.Errorf("receive request: %w", err)
}
repo := req.GetRepository()
if repo == nil {
return errMissingRepository
}
storageName := repo.StorageName
if storageName == "" {
return errMissingStorageName
}
relativePath := repo.RelativePath
if relativePath == "" {
return errMissingRelativePath
}
exists, err := rs.RepositoryExists(stream.Context(), storageName, relativePath)
if err != nil {
return fmt.Errorf("repository exists: %w", err)
}
if err := stream.SendMsg(&gitalypb.RepositoryExistsResponse{Exists: exists}); err != nil {
return fmt.Errorf("send response: %w", err)
}
return nil
}
}
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