From 1e40d8fbc0cabc8bc75f3f1a0b139e24c86aac93 Mon Sep 17 00:00:00 2001
From: Griatch <griatch@gmail.com>
Date: Fri, 26 Jun 2020 12:31:57 +0200
Subject: [PATCH] Add maintenace task to portal, dropping db connection to
 resolve mysql timeouts. Resolves #2101.

---
 evennia/server/portal/portal.py | 25 ++++++++++++++++++++++++-
 1 file changed, 24 insertions(+), 1 deletion(-)

diff --git a/evennia/server/portal/portal.py b/evennia/server/portal/portal.py
index 633e63bb51..1bf3fa2acf 100644
--- a/evennia/server/portal/portal.py
+++ b/evennia/server/portal/portal.py
@@ -13,6 +13,7 @@ import time
 
 from os.path import dirname, abspath
 from twisted.application import internet, service
+from twisted.internet.task import LoopingCall
 from twisted.internet import protocol, reactor
 from twisted.python.log import ILogObserver
 
@@ -20,6 +21,7 @@ import django
 
 django.setup()
 from django.conf import settings
+from django.db import connection
 
 import evennia
 
@@ -101,10 +103,29 @@ except ImportError:
     WEB_PLUGINS_MODULE = None
     INFO_DICT["errors"] = (
         "WARNING: settings.WEB_PLUGINS_MODULE not found - "
-        "copy 'evennia/game_template/server/conf/web_plugins.py to mygame/server/conf."
+        "copy 'evennia/game_template/server/conf/web_plugins.py to "
+        "mygame/server/conf."
     )
 
 
+_MAINTENANCE_COUNT = 0
+
+
+def _portal_maintenance():
+    """
+    Repeated maintenance tasks for the portal.
+
+    """
+    global _MAINTENANCE_COUNT
+
+    _MAINTENANCE_COUNT += 1
+
+    if _MAINTENANCE_COUNT % (3600 * 7) == 0:
+        # drop database connection every 7 hrs to avoid default timeouts on MySQL
+        # (see https://github.com/evennia/evennia/issues/1376)
+        connection.close()
+
+
 # -------------------------------------------------------------
 # Portal Service object
 # -------------------------------------------------------------
@@ -142,6 +163,8 @@ class Portal(object):
         self.server_info_dict = {}
 
         self.start_time = time.time()
+        self.maintenance_task = LoopingCall(_portal_maintenance)
+        self.maintenance_task.start(60, now=True)  # call every minute
 
         # in non-interactive portal mode, this gets overwritten by
         # cmdline sent by the evennia launcher