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-rw-r--r--resources/libraries/python/VatJsonUtil.py54
1 files changed, 54 insertions, 0 deletions
diff --git a/resources/libraries/python/VatJsonUtil.py b/resources/libraries/python/VatJsonUtil.py
index 05c93a1d06..e17375ab56 100644
--- a/resources/libraries/python/VatJsonUtil.py
+++ b/resources/libraries/python/VatJsonUtil.py
@@ -102,6 +102,60 @@ class VatJsonUtil(object):
ifc['mtu'] = interface_dict["mtu"]
@staticmethod
+ def get_interface_sw_index_from_json(interface_dump_json, interface_name):
+ """Get sw_if_index from given JSON output by interface name.
+
+ :param interface_dump_json: JSON output from dump_interface_list VAT
+ command.
+ :param interface_name: Interface name.
+ :type interface_dump_json: str
+ :type interface_name: str
+ :return: SW interface index.
+ :rtype: int
+ :raises ValueError: If interface not found in interface_dump_json.
+ """
+ logger.trace(interface_dump_json)
+ interface_list = JsonParser().parse_data(interface_dump_json)
+ for interface in interface_list:
+ try:
+ if interface['interface_name'] == interface_name:
+ index = interface['sw_if_index']
+ logger.debug('Interface with name {} has sw_if_index {}.'
+ .format(interface_name, index))
+ return index
+ except KeyError:
+ pass
+ raise ValueError('Interface with name {} not found.'
+ .format(interface_name))
+
+ @staticmethod
+ def get_interface_name_from_json(interface_dump_json, sw_if_index):
+ """Get interface name from given JSON output by sw_if_index.
+
+ :param interface_dump_json: JSON output from dump_interface_list VAT
+ command.
+ :param sw_if_index: SW interface index.
+ :type interface_dump_json: str
+ :type sw_if_index: int
+ :return: Interface name.
+ :rtype: str
+ :raises ValueError: If interface not found in interface_dump_json.
+ """
+ logger.trace(interface_dump_json)
+ interface_list = JsonParser().parse_data(interface_dump_json)
+ for interface in interface_list:
+ try:
+ if interface['sw_if_index'] == sw_if_index:
+ interface_name = interface['interface_name']
+ logger.debug('Interface with name {} has sw_if_index {}.'
+ .format(interface_name, sw_if_index))
+ return interface_name
+ except KeyError:
+ pass
+ raise ValueError('Interface with sw_if_index {} not found.'
+ .format(sw_if_index))
+
+ @staticmethod
def verify_vat_retval(vat_out, exp_retval=0, err_msg='VAT cmd failed'):
"""Verify return value of VAT command.