def run(self, fetches, feed_dict=None, options=None, run_metadata=None):
"""See base class."""
if self.should_stop():
raise RuntimeError('Run called even after should_stop requested.')
actual_fetches = {'caller': fetches}
run_context = session_run_hook.SessionRunContext(
original_args=session_run_hook.SessionRunArgs(fetches, feed_dict),
session=self._sess)
feed_dict = self._call_hook_before_run(run_context, actual_fetches,
feed_dict)
# Do session run.
outputs = _WrappedSession.run(self,
fetches=actual_fetches,
feed_dict=feed_dict,
options=options,
run_metadata=run_metadata)
for hook in self._hooks:
hook.after_run(
run_context,
session_run_hook.SessionRunValues(
results=outputs[hook] if hook in outputs else None))
self._should_stop = self._should_stop or run_context.stop_requested
return outputs['caller']
def testCallsHooksBeginEnd(self):
with tf.Graph().as_default(), tf.Session() as sess:
mock_hook = FakeHook()
mock_hook2 = FakeHook()
mon_sess = monitored_session._HookedSession(
sess=sess, hooks=[mock_hook, mock_hook2])
a_tensor = tf.constant([0], name='a_tensor')
sess.run(tf.initialize_all_variables())
mon_sess.run(a_tensor)
for hook in [mock_hook, mock_hook2]:
self.assertEqual(
hook.last_run_values,
session_run_hook.SessionRunValues(results=None))
self.assertEqual(hook.last_run_context.original_args,
session_run_hook.SessionRunArgs(a_tensor))
self.assertEqual(hook.last_run_context.session, sess)
self.assertEqual(hook.call_counter['before_run'], 1)
self.assertEqual(hook.call_counter['after_run'], 1)
