def _bisect(self, handler, build_data):
"""
Starts a bisection for a :class:`mozregression.build_data.BuildData`.
"""
download_manager = BuildDownloadManager(handler._logger,
self.download_dir)
bisection = Bisection(handler,
build_data,
download_manager,
self.test_runner,
self.fetch_config,
dl_in_background=self.dl_in_background)
try:
while True:
mid = bisection.search_mid_point()
result = bisection.init_handler(mid)
if result != bisection.RUNNING:
return result
mid, build_infos = bisection.download_build(mid)
verdict, app_info = bisection.evaluate(build_infos)
bisection.update_build_info(mid, app_info)
result = bisection.handle_verdict(mid, verdict)
if result != bisection.RUNNING:
return result
finally:
# ensure we cancel any possible download done in the background
# else python will block until threads termination.
download_manager.cancel()
def build_download_manager(self):
if self._build_download_manager is None:
background_dl_policy = self.options.background_dl_policy
if not self.options.persist:
# cancel background downloads forced
background_dl_policy = "cancel"
self._build_download_manager = BuildDownloadManager(
self._download_dir,
background_dl_policy=background_dl_policy,
persist_limit=PersistLimit(self.options.persist_size_limit))
return self._build_download_manager
