upload and download ddpg models

server/website/website/settings/common.py

@@ -247,6 +247,9 @@ CELERYD_MAX_TASKS_PER_CHILD = 20
 # the task has been executed, not just before
 CELERY_ACKS_LATE = False
 
+# Set the upload max size to a large value for uploading DDPG models
+DATA_UPLOAD_MAX_MEMORY_SIZE = 102410241024
+
 djcelery.setup_loader()
 
 # ==============================================

server/website/website/views.py

@@ -4,6 +4,7 @@
 # Copyright (c) 2017-18, Carnegie Mellon University Database Group
 #
 # pylint: disable=too-many-lines
+import base64
 import csv
 import logging
 import os
@@ -1564,6 +1565,15 @@ def alt_create_or_edit_session(request):
         defaults['hardware'] = hardware
         defaults['upload_code'] = data.pop('upload_code', None) or MediaUtil.upload_code_generator()
         defaults.update(creation_time=ts, last_update=ts, **data)
+        if 'ddpg_actor_model' in defaults:
+            defaults['ddpg_actor_model'] =\
+                base64.decodebytes(defaults['ddpg_actor_model'].encode('utf8'))
+            defaults['ddpg_critic_model'] =\
+                base64.decodebytes(defaults['ddpg_critic_model'].encode('utf8'))
+            defaults['ddpg_reply_memory'] =\
+                base64.decodebytes(defaults['ddpg_replay_memory'].encode('utf8'))
+            # There is a typo in the object name. After correcting that typo, remove the next line.
+            defaults.pop('ddpg_replay_memory')
 
         session, created = Session.objects.get_or_create(user=user, project=project,
                                                          name=session_name, defaults=defaults)
@@ -1624,6 +1634,10 @@ def alt_create_or_edit_session(request):
     res['hardware_id'] = res['hardware']
     res['hardware'] = model_to_dict(session.hardware)
     res['algorithm'] = AlgorithmType.name(res['algorithm'])
+    if session.ddpg_actor_model is not None:
+        res['ddpg_actor_model'] = base64.encodebytes(session.ddpg_actor_model).decode('utf8')
+        res['ddpg_critic_model'] = base64.encodebytes(session.ddpg_critic_model).decode('utf8')
+        res['ddpg_replay_memory'] = base64.encodebytes(session.ddpg_reply_memory).decode('utf8')
     sk = SessionKnob.objects.get_knobs_for_session(session)
     sess_knobs = {}
     for knob in sk: