def __init__(self,
storage_dir,
base_oai_url=None,
identifier_uri_prefix=None):
self.store = Silo(storage_dir,
uri_base=base_oai_url,
base_oai_url=base_oai_url,
identifier_uri_prefix=identifier_uri_prefix)
self.state = PersistentState(storage_dir, "oaipmh_harvester.json")
self._init_clients()
