def __init__(self, client, store, emailer):
self._client = client
self._emailer = emailer
self._data_builder = DataBuilder(store)
self._owned_job_token = None
self._name = get_unique_name()
self._inspector = Inspector(client)
# The lock synchronizes access to shared attributes between the worker
# thread and the lease renewer thread.
self._lock = threading.Lock()
self._lease_renewer = None
self._executor = None
self._test_only_end_if_no_runnable = False
