[action] [PR:3068] [db_migrator]Remove route migration (#3068)

scripts/db_migrator.py

@@ -614,28 +614,6 @@ def migrate_feature_timer(self):
                 config.pop('has_timer')
                 self.configDB.set_entry('FEATURE', feature, config)
 
-    def migrate_route_table(self):
-        """
-        Handle route table migration. Migrations handled:
-        1. 'weight' attr in ROUTE object was introduced 202205 onwards.
-            Upgrade from older branch to 202205 will require this 'weight' attr to be added explicitly
-        2. 'protocol' attr in ROUTE introduced in 202305 onwards.
-            WarmRestartHelper reconcile logic requires to have "protocol" field in the old dumped ROUTE_TABLE.
-        """
-        route_table = self.appDB.get_table("ROUTE_TABLE")
-        for route_prefix, route_attr in route_table.items():
-            if type(route_prefix) == tuple:
-                # IPv6 route_prefix is returned from db as tuple
-                route_key = "ROUTE_TABLE:" + ":".join(route_prefix)
-            else:
-                # IPv4 route_prefix is returned from db as str
-                route_key = "ROUTE_TABLE:{}".format(route_prefix)
-
-            if 'weight' not in route_attr:
-                self.appDB.set(self.appDB.APPL_DB, route_key, 'weight','')
-
-            if 'protocol' not in route_attr:
-                self.appDB.set(self.appDB.APPL_DB, route_key, 'protocol', '')
 
     def migrate_routing_config_mode(self):
         # DEVICE_METADATA - synchronous_mode entry
@@ -1079,8 +1057,6 @@ def common_migration_ops(self):
         else:
             log.log_notice("Asic Type: {}, Hwsku: {}".format(self.asic_type, self.hwsku))
 
-        self.migrate_route_table()
-
         # Updating edgezone aggregator cable length config for T0 devices
         self.update_edgezone_aggregator_config()
         # update FRR config mode based on minigraph parser on target image

tests/db_migrator_test.py

@@ -600,41 +600,6 @@ def test_migrate_loopback_int(self):
             diff = DeepDiff(resulting_keys, expected_keys, ignore_order=True)
             assert not diff
 
-class TestWarmUpgrade_without_required_attributes(object):
-    @classmethod
-    def setup_class(cls):
-        os.environ['UTILITIES_UNIT_TESTING'] = "2"
-
-    @classmethod
-    def teardown_class(cls):
-        os.environ['UTILITIES_UNIT_TESTING'] = "0"
-        dbconnector.dedicated_dbs['CONFIG_DB'] = None
-        dbconnector.dedicated_dbs['APPL_DB'] = None
-
-    def test_migrate_weights_protocol_for_nexthops(self):
-        dbconnector.dedicated_dbs['CONFIG_DB'] = os.path.join(mock_db_path, 'config_db', 'routes_migrate_input')
-        dbconnector.dedicated_dbs['APPL_DB'] = os.path.join(mock_db_path, 'appl_db', 'routes_migrate_input')
-
-        import db_migrator
-        dbmgtr = db_migrator.DBMigrator(None)
-        dbmgtr.migrate()
-        dbconnector.dedicated_dbs['APPL_DB'] = os.path.join(mock_db_path, 'appl_db', 'routes_migrate_expected')
-        expected_db = Db()
-
-        # verify migrated appDB
-        expected_appl_db = SonicV2Connector(host='127.0.0.1')
-        expected_appl_db.connect(expected_appl_db.APPL_DB)
-        expected_keys = expected_appl_db.keys(expected_appl_db.APPL_DB, "ROUTE_TABLE:*")
-        expected_keys.sort()
-        resulting_keys = dbmgtr.appDB.keys(dbmgtr.appDB.APPL_DB, "ROUTE_TABLE:*")
-        resulting_keys.sort()
-        assert expected_keys == resulting_keys
-        for key in expected_keys:
-            resulting_keys = dbmgtr.appDB.get_all(dbmgtr.appDB.APPL_DB, key)
-            expected_keys = expected_appl_db.get_all(expected_appl_db.APPL_DB, key)
-            diff = DeepDiff(resulting_keys, expected_keys, ignore_order=True)
-            assert not diff
-
 class TestWarmUpgrade_T0_EdgeZoneAggregator(object):
     @classmethod
     def setup_class(cls):