fix: 修改db_port_mapper策略; 启动时进行check校验;

apps/terminal/signal_handlers.py

@@ -19,7 +19,7 @@ logger = get_logger(__file__)
 def init_db_port_mapper(sender, **kwargs):
     logger.info('Init db port mapper')
     try:
-        db_port_manager.init()
+        db_port_manager.check()
     except (ProgrammingError,) as e:
         pass
 

apps/terminal/utils/db_port_mapper.py

@@ -35,9 +35,22 @@ class DBPortManager(object):
     def magnus_listen_port_range(self):
         return settings.MAGNUS_PORTS
 
-    def init(self):
+    @staticmethod
+    def fetch_dbs():
         with tmp_to_root_org():
-            db_ids = Application.objects.filter(category=AppCategory.db).values_list('id', flat=True)
+            dbs = Application.objects.filter(category=AppCategory.db)
+            return dbs
+
+    def check(self):
+        dbs = self.fetch_dbs()
+        for db in dbs:
+            port = self.get_port_by_db(db, raise_exception=False)
+            if not port:
+                self.add(db)
+
+    def init(self):
+        dbs = self.fetch_dbs()
+        db_ids = dbs.values_list('id', flat=True)
         db_ids = [str(i) for i in db_ids]
         mapper = dict(zip(self.all_available_ports, list(db_ids)))
         self.set_mapper(mapper)