trytond: Disable cache threads during uWSGI init [CUSTOM]

trytond/trytond/application.py

@@ -32,6 +32,7 @@
 from trytond.pool import Pool  # noqa: E402
 from trytond.wsgi import app  # noqa: E402
 
+Pool.start_app_initialization()
 Pool.start()
 # TRYTOND_CONFIG it's managed by importing config
 db_names = os.environ.get('TRYTOND_DATABASE_NAMES')
@@ -61,3 +62,5 @@
 #
 # If this is not the cause, good luck
 application = app
+
+Pool.app_initialization_completed()

trytond/trytond/cache.py

@@ -370,6 +370,9 @@ def refresh_pool(cls, transaction):
 
     @classmethod
     def _listen(cls, dbname):
+        if Pool.app_initializing():
+            return
+
         current_thread = threading.current_thread()
         pid = os.getpid()
 

trytond/trytond/pool.py

@@ -50,6 +50,7 @@ class Pool(object):
         'report': defaultdict(OrderedDict),
     }
     classes_mixin = defaultdict(list)
+    _application_initializing = False
     _started = False
     _lock = RLock()
     _locks = {}
@@ -97,6 +98,18 @@ def register(cls, *classes, **kwargs):
                 f"{cls} is missing metaclass {PoolMeta}")
             mpool[cls] = depends
 
+    @classmethod
+    def start_app_initialization(cls):
+        cls._application_initializing = True
+
+    @classmethod
+    def app_initialization_completed(cls):
+        cls._application_initializing = False
+
+    @classmethod
+    def app_initializing(cls):
+        return cls._application_initializing
+
     @classmethod
     def add_pool_type(cls, type):
         cls.pool_types.add(type)