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[ipintutil]Handle exception in show ip interfaces command #3182

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merged 5 commits into from
Mar 18, 2024
Merged

[ipintutil]Handle exception in show ip interfaces command #3182

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5a2a958
[ipintutil]Handle exception in show ip interfaces command
dgsudharsan Feb 27, 2024
9fd110a
Adding UT
dgsudharsan Feb 28, 2024
cd8a66c
Adding coverage
dgsudharsan Feb 28, 2024
b7bc4d3
Removing the unnecessary diff
dgsudharsan Feb 28, 2024
7f97968
Adding changes for coverage
dgsudharsan Feb 28, 2024
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6 changes: 5 additions & 1 deletion scripts/ipintutil
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Original file line number Diff line number Diff line change
Expand Up @@ -29,6 +29,7 @@ try:
mock_tables.dbconnector.load_namespace_config()
else:
import mock_tables.mock_single_asic
mock_tables.mock_single_asic.add_unknown_intf=True
except KeyError:
pass

Expand Down Expand Up @@ -150,7 +151,10 @@ def get_ip_intfs_in_namespace(af, namespace, display):
ip_intf_attr = []
if namespace != constants.DEFAULT_NAMESPACE and skip_ip_intf_display(iface, display):
continue
ipaddresses = multi_asic_util.multi_asic_get_ip_intf_addr_from_ns(namespace, iface)
try:
ipaddresses = multi_asic_util.multi_asic_get_ip_intf_addr_from_ns(namespace, iface)
except ValueError:
continue
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@qiluo-msft qiluo-msft Feb 28, 2024 •
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Is it better to print error message and exit? If you continue, ipaddresses is not initialized and used. #Closed

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I don't think its correct. This will avoid other interfaces detail to not be shown. This is a very rare scenario during config reload.
Here is the scenario - While getting the interfaces there are 4 ports (docker0, eth0, lo0 and Loopback0). But while it enters the for loop in the parallel config reload flow Loopback0 gets deleted. However other interfaces exist and those information should be displayed. We can skip Loopback0 as we get valueerror meaning the interface does not exist now

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Sorry, there is no uninitialized variable in use.

if af in ipaddresses:
ifaddresses = []
bgp_neighs = {}
Expand Down
7 changes: 6 additions & 1 deletion tests/mock_tables/mock_single_asic.py
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Expand Up @@ -4,6 +4,8 @@
from sonic_py_common import multi_asic
from utilities_common import multi_asic as multi_asic_util

add_unknown_intf=False

mock_intf_table = {
'': {
'eth0': {
Expand Down Expand Up @@ -60,6 +62,8 @@ def mock_single_asic_get_ip_intf_from_ns(namespace):
interfaces = []
try:
interfaces = list(mock_intf_table[namespace].keys())
if add_unknown_intf:
interfaces.append("unknownintf")
except KeyError:
pass
return interfaces
Expand All @@ -70,7 +74,8 @@ def mock_single_asic_get_ip_intf_addr_from_ns(namespace, iface):
try:
ipaddresses = mock_intf_table[namespace][iface]
except KeyError:
pass
if add_unknown_intf:
raise ValueError("Unknow interface")
return ipaddresses


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