And a connections clean up decorator to all scheduled tasks

src/khoj/configure.py

@@ -3,6 +3,7 @@
 import os
 from datetime import datetime
 from enum import Enum
+from functools import wraps
 from typing import Optional
 
 import openai
@@ -198,6 +199,26 @@ def initialize_server(config: Optional[FullConfig]):
         raise e
 
 
+def clean_connections(func):
+    """
+    A decorator that ensures that Django database connections that have become unusable, or are obsolete, are closed
+    before and after a method is executed (see: https://docs.djangoproject.com/en/dev/ref/databases/#general-notes
+    for background).
+    """
+
+    @wraps(func)
+    def func_wrapper(*args, **kwargs):
+        close_old_connections()
+        try:
+            result = func(*args, **kwargs)
+        finally:
+            close_old_connections()
+
+        return result
+
+    return func_wrapper
+
+
 def configure_server(
     config: FullConfig,
     regenerate: bool = False,
@@ -349,6 +370,7 @@ def update_content_index():
 
 
 @schedule.repeat(schedule.every(22).to(25).hours)
+@clean_connections
 def update_content_index_regularly():
     ProcessLockAdapters.run_with_lock(
         update_content_index, ProcessLock.Operation.INDEX_CONTENT, max_duration_in_seconds=60 * 60 * 2
@@ -364,6 +386,7 @@ def configure_search_types():
 
 
 @schedule.repeat(schedule.every(2).minutes)
+@clean_connections
 def upload_telemetry():
     if telemetry_disabled(state.config.app, state.telemetry_disabled) or not state.telemetry:
         return
@@ -389,12 +412,14 @@ def upload_telemetry():
 
 
 @schedule.repeat(schedule.every(31).minutes)
+@clean_connections
 def delete_old_user_requests():
     num_deleted = delete_user_requests()
     logger.debug(f"🗑️ Deleted {num_deleted[0]} day-old user requests")
 
 
 @schedule.repeat(schedule.every(17).minutes)
+@clean_connections
 def wakeup_scheduler():
     # Wake up the scheduler to ensure it runs the scheduled tasks. This is because the elected leader may not always be aware of tasks scheduled on other workers.
     TWELVE_HOURS = 43200