[chassis][multi asic] change acl_loader to use tcp socket for db comm…

…unication (#2525)

Signed-off-by: Arvindsrinivasan Lakshmi Narasimhan arlakshm@microsoft.com

Microsoft ADO 24363637

What I did
Currently on multi asic platform the acl-loader script connects to all the db in the namespaces using unix sockets.
This cause permission errors when executing show acl commands for user with RO privileges.
To avoid this change the acl-loader to use tcp socket to connect to db in namespaces

How I did it
update acl-loader

How to verify it
UT
Signed-off-by: Arvindsrinivasan Lakshmi Narasimhan <arlakshm@microsoft.com>

acl_loader/main.py

@@ -156,9 +156,9 @@ def __init__(self):
 
         namespaces = multi_asic.get_all_namespaces()
         for front_asic_namespaces in namespaces['front_ns']:
-            self.per_npu_configdb[front_asic_namespaces] = ConfigDBConnector(use_unix_socket_path=True, namespace=front_asic_namespaces)
+            self.per_npu_configdb[front_asic_namespaces] = ConfigDBConnector(namespace=front_asic_namespaces)
             self.per_npu_configdb[front_asic_namespaces].connect()
-            self.per_npu_statedb[front_asic_namespaces] = SonicV2Connector(use_unix_socket_path=True, namespace=front_asic_namespaces)
+            self.per_npu_statedb[front_asic_namespaces] = SonicV2Connector(namespace=front_asic_namespaces)
             self.per_npu_statedb[front_asic_namespaces].connect(self.per_npu_statedb[front_asic_namespaces].STATE_DB)
 
         self.read_tables_info()

tests/acl_loader_test.py

@@ -1,3 +1,4 @@
+import importlib
 import sys
 import os
 import pytest
@@ -227,3 +228,43 @@ def test_incremental_update(self, acl_loader):
         acl_loader.load_rules_from_file(os.path.join(test_path, 'acl_input/incremental_2.json'))
         acl_loader.incremental_update()
         assert acl_loader.rules_info[(('NTP_ACL', 'RULE_1'))]["PACKET_ACTION"] == "DROP"
+
+
+
+class TestMasicAclLoader(object):
+
+
+    @pytest.fixture(scope="class")
+    def acl_loader(self):
+        from .mock_tables import mock_multi_asic
+        importlib.reload(mock_multi_asic)
+        from .mock_tables import dbconnector
+        dbconnector.load_namespace_config()
+
+        with mock.patch("sonic_py_common.multi_asic.get_all_namespaces",
+                        mock.MagicMock(return_value={'front_ns': ['asic0', 'asic1'], 'back_ns': '', 'fabric_ns': ''})):
+            yield AclLoader()
+
+        # mock single asic to avoid affecting other tests
+        from .mock_tables import mock_single_asic
+        importlib.reload(mock_single_asic)
+
+    def test_check_npu_db(self, acl_loader):
+        assert len(acl_loader.per_npu_configdb) == 2
+        assert len(acl_loader.per_npu_statedb) == 2
+
+    def test_incremental_update(self, acl_loader):
+        acl_loader.rules_info = {}
+        acl_loader.tables_db_info['NTP_ACL'] = {
+            "stage": "INGRESS",
+            "type": "CTRLPLANE"
+        }
+        acl_loader.load_rules_from_file(os.path.join(test_path, 'acl_input/incremental_1.json'))
+        acl_loader.rules_db_info = acl_loader.rules_info
+        assert acl_loader.rules_info[(('NTP_ACL', 'RULE_1'))]["PACKET_ACTION"] == "ACCEPT"
+        for configdb in acl_loader.per_npu_configdb.values():
+            configdb.mod_entry = mock.MagicMock(return_value=True)
+            configdb.set_entry = mock.MagicMock(return_value=True)
+        acl_loader.load_rules_from_file(os.path.join(test_path, 'acl_input/incremental_2.json'))
+        acl_loader.incremental_update()
+        assert acl_loader.rules_info[(('NTP_ACL', 'RULE_1'))]["PACKET_ACTION"] == "DROP"