1000 fix key error 2 (#1016)

* Doc updates

* fix error

* Fixed wrong exception handling implementation.

Author: bwsw

samples/router/src/analytics.py

@@ -1,14 +1,14 @@
 import asyncio
-import time
 import os
+import time
 
 from savant_rs.logging import LogLevel, log
 from savant_rs.match_query import MatchQuery as Q
 from savant_rs.primitives import BorrowedVideoObject, VideoFrame
 from savant_rs.zmq import NonBlockingReader, ReaderConfigBuilder, ReaderResultMessage
 
+socket_url = os.getenv('ZMQ_SRC_ENDPOINT')
 
-socket_url = os.getenv("ZMQ_SRC_ENDPOINT")
 
 async def reader():
     reader_config = ReaderConfigBuilder(socket_url).build()
@@ -35,15 +35,15 @@ async def reader():
                     processed_at = time.time() * 1000
                     log(
                         LogLevel.Info,
-                        "analytics::time_delta",
-                        f"{frame.source_id} {frame.pts} {int(processed_at - created_at)} {object_info}",
+                        'analytics::time_delta',
+                        f'{frame.source_id} {frame.pts} {int(processed_at - created_at)} {object_info}',
                     )
-                    log(LogLevel.Info, "analytics::frame::json", f"{frame.json}")
+                    log(LogLevel.Info, 'analytics::frame::json', f'{frame.json}')
 
 
 loop = asyncio.new_event_loop()
 try:
     loop.run_until_complete(reader())
 finally:
     loop.run_until_complete(loop.shutdown_asyncgens())
-    loop.close()
+    loop.close()

savant/deepstream/pipeline.py

@@ -1031,11 +1031,10 @@ def _nvds_obj_id(_obj_meta: pyds.NvDsObjectMeta) -> str:
                 # TODO: fix it GitHub issue #1000
                 # this is a workaround to fix the issue (we just prevent circular references)
                 obj = video_frame.get_object(obj_id)
-                parent = video_frame.get_object(nvds_object_id_map[parent_id])
                 self._logger.warning(
-                    'Failed to set parent for object %s: %s, exception: %s',
+                    'Failed to set parent %s for object %s: exception: %s',
+                    parent_id,
                     (obj.id, obj.namespace, obj.label, obj.track_id),
-                    (parent.id, parent.namespace, parent.label, parent.track_id),
                     e,
                 )