feat: 增加 DB Listen Port 映射规则

apps/applications/signal_handlers.py

@@ -0,0 +1,34 @@
+# -*- coding: utf-8 -*-
+#
+from django.db.models.signals import post_save, post_delete
+
+from common.signals import django_ready
+from django.dispatch import receiver
+from common.utils import get_logger
+from .models import Application
+from .utils import db_port_manager
+
+
+logger = get_logger(__file__)
+
+
+@receiver(django_ready)
+def init_db_port_mapper(sender, **kwargs):
+    logger.info('Init db port mapper')
+    db_port_manager.init()
+
+
+@receiver(post_save, sender=Application)
+def on_db_app_created(sender, instance: Application, created, **kwargs):
+    if not instance.category_db:
+        return
+    if not created:
+        return
+    db_port_manager.add(instance)
+
+
+@receiver(post_delete, sender=Application)
+def on_db_app_delete(sender, instance, **kwargs):
+    if not instance.category_db:
+        return
+    db_port_manager.pop(instance)