provenance.py 文件源码

def add_ancestor(self, artifact):
        other_path = artifact._archiver.provenance_dir
        if other_path is None:
            # The artifact doesn't have provenance (e.g. version 0)
            # it would be possible to invent a metadata.yaml, but we won't know
            # the framework version for the VERSION file. Even if we did
            # it won't accomplish a lot and there shouldn't be enough
            # version 0 artifacts in the wild to be important in practice.
            # NOTE: this implies that it is possible for an action.yaml file to
            # contain an artifact UUID that is not in the artifacts/ directory.
            return NoProvenance(artifact.uuid)

        destination = self.ancestor_dir / str(artifact.uuid)
        # If it exists, then the artifact is already in the provenance
        # (and so are its ancestors)
        if not destination.exists():
            # Handle root node of ancestor
            shutil.copytree(
                str(other_path), str(destination),
                ignore=shutil.ignore_patterns(self.ANCESTOR_DIR + '*'))

            # Handle ancestral nodes of ancestor
            grandcestor_path = other_path / self.ANCESTOR_DIR
            if grandcestor_path.exists():
                for grandcestor in grandcestor_path.iterdir():
                    destination = self.ancestor_dir / grandcestor.name
                    if not destination.exists():
                        shutil.copytree(str(grandcestor), str(destination))

        return str(artifact.uuid)