added type safety

Author: rads-1996

sdk/monitor/azure-monitor-opentelemetry-exporter/azure/monitor/opentelemetry/exporter/export/logs/_exporter.py

@@ -128,9 +128,14 @@ def _convert_log_to_envelope(log_data: LogData) -> TelemetryItem:
     envelope.tags[ContextTagKeys.AI_OPERATION_PARENT_ID] = "{:016x}".format(  # type: ignore
         log_record.span_id or _DEFAULT_SPAN_ID
     )
-    envelope.tags[ContextTagKeys.AI_OPERATION_NAME] = log_record.attributes.get( # type: ignore
-        ContextTagKeys.AI_OPERATION_NAME
-    )
+    if (
+        log_record.attributes
+        and ContextTagKeys.AI_OPERATION_NAME in log_record.attributes
+        and log_record.attributes[ContextTagKeys.AI_OPERATION_NAME] is not None
+    ):
+        envelope.tags[ContextTagKeys.AI_OPERATION_NAME] = log_record.attributes.get( # type: ignore
+            ContextTagKeys.AI_OPERATION_NAME
+        )
     if _utils._is_any_synthetic_source(log_record.attributes):
         envelope.tags[ContextTagKeys.AI_OPERATION_SYNTHETIC_SOURCE] = "True"  # type: ignore
     # Special use case: Customers want to be able to set location ip on log records