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package praefect
import (
"fmt"
"gitlab.com/gitlab-org/gitaly/v16/internal/gitaly/storage"
"gitlab.com/gitlab-org/gitaly/v16/internal/praefect/datastore"
"gitlab.com/gitlab-org/gitaly/v16/internal/structerr"
"gitlab.com/gitlab-org/gitaly/v16/proto/go/gitalypb"
"google.golang.org/grpc"
)
// WalkReposHandler implements an interceptor for the WalkRepos RPC, invoked when calling
// through Praefect. Instead of walking the storage directory in the filesystem, this Praefect
// implementation queries the database for all known repositories in the given virtual storage.
// As a consequence, the modification_time parameter can't be populated in the response.
func WalkReposHandler(rs datastore.RepositoryStore) grpc.StreamHandler {
return func(srv interface{}, stream grpc.ServerStream) error {
sendRepo := func(relPath string) error {
return stream.SendMsg(&gitalypb.WalkReposResponse{
RelativePath: relPath,
})
}
var req gitalypb.WalkReposRequest
if err := stream.RecvMsg(&req); err != nil {
return fmt.Errorf("receive request: %w", err)
}
if req.StorageName == "" {
return structerr.NewInvalidArgument("%w", storage.ErrStorageNotSet)
}
repos, err := rs.ListRepositoryPaths(stream.Context(), req.StorageName)
if err != nil {
return structerr.NewInternal("list repository paths: %w", err)
}
for _, repo := range repos {
if err := sendRepo(repo); err != nil {
return structerr.NewInternal("send repository path: %w", err)
}
}
return nil
}
}
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