feat(bus.bus): add index on bus_bus(channel, id) to optimize notifications

Author: zamberjo

bus_record_events/models/__init__.py

@@ -1,2 +1,3 @@
 from . import bus_event_mixin
 from . import ir_websocket
+from . import bus_bus

bus_record_events/models/bus_bus.py

@@ -0,0 +1,13 @@
+from odoo import models
+from odoo.tools import index_exists
+
+
+class BusBus(models.Model):
+    _inherit = "bus.bus"
+
+    def init(self):
+        index_1 = "idx_bus_bus_channel_id"
+        if not index_exists(self._cr, index_1):
+            self._cr.execute(
+                "CREATE INDEX idx_bus_bus_channel_id " "ON bus_bus (channel, id);"
+            )