make sure monitor polys are restored after detect, restore old values after abnormal exit as well

Author: pliablepixels

mlapi.py

@@ -124,7 +124,7 @@ def post(self):
             g.logger.Debug (1, 'Monitor ID {} provided & matching config found in mlapi, ignoring objectconfig.ini'.format(mid))
             config_copy = copy.copy(g.config)
             poly_copy = copy.copy(g.polygons)
-            g.polygons = g.monitor_polygons[mid]
+            g.polygons = copy.copy(g.monitor_polygons[mid])
 
 
             for key in g.monitor_config[mid]:
@@ -183,6 +183,10 @@ def post(self):
         else:
             stream_options = req.get('stream_options')
         if not stream_options:
+                if config_copy:
+                    g.log.Debug(2, 'Restoring global config & ml_options')
+                    g.config = config_copy
+                    g.polygons = poly_copy
                 abort(400, msg='No stream options found')
         stream_options['api'] = zmapi
         stream_options['polygons'] = g.polygons
@@ -199,6 +203,10 @@ def post(self):
             g.log.Debug (1,'Object Recognition requested')
             #m = ObjectDetect.Object()
         else:
+            if config_copy:
+                g.log.Debug(2, 'Restoring global config & ml_options')
+                g.config = config_copy
+                g.polygons = poly_copy
             abort(400, msg='Invalid Model:{}'.format(args['type']))
 
         if not stream: