Cherry-picking PRs from master to resolve database not initialize issue

scripts/port2alias

@@ -7,6 +7,7 @@ from io import StringIO
 from portconfig import get_port_config
 from sonic_py_common import device_info
 from sonic_py_common import multi_asic
+from utilities_common.general import load_db_config
 
 # mock the redis for unit test purposes #
 try:
@@ -50,6 +51,7 @@ def translate_line(line, ports):
 def main():
     (platform, hwsku) = device_info.get_platform_and_hwsku()
     ports = {}
+    load_db_config()
     for ns in multi_asic.get_namespace_list():
         (ports_ns, _, _) = get_port_config(hwsku=hwsku, platform=platform, asic_name=ns)
         ports.update(ports_ns)

sfputil/main.py

@@ -23,6 +23,7 @@
 from utilities_common.sfp_helper import covert_application_advertisement_to_output_string
 from utilities_common.sfp_helper import QSFP_DATA_MAP
 from tabulate import tabulate
+from utilities_common.general import load_db_config
 
 VERSION = '3.0'
 
@@ -548,6 +549,7 @@ def load_sfputilhelper():
 
 
 def load_port_config():
+    load_db_config()
     try:
         if multi_asic.is_multi_asic():
             # For multi ASIC platforms we pass DIR of port_config_file_path and the number of asics

tests/sfputil_test.py

@@ -839,3 +839,15 @@ def test_update_firmware_info_to_state_db(self, mock_chassis):
         mock_sfp.get_transceiver_info_firmware_versions.return_value = ['a.b.c', 'd.e.f']
 
         sfputil.update_firmware_info_to_state_db("Ethernet0")
+
+    @patch('sfputil.main.multi_asic.is_multi_asic')
+    @patch('sfputil.main.platform_sfputil', MagicMock())
+    @patch('sfputil.main.device_info.get_paths_to_platform_and_hwsku_dirs',
+        MagicMock(return_value=(None, None)))
+    @patch('sfputil.main.device_info.get_path_to_port_config_file', MagicMock(return_value=('')))
+    def test_load_port_config(self, mock_is_multi_asic):
+        mock_is_multi_asic.return_value = True
+        assert sfputil.load_port_config() == True
+
+        mock_is_multi_asic.return_value = False
+        assert sfputil.load_port_config() == True