+++ /dev/null
-# Copyright (c) 2018 Cisco and/or its affiliates.
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at:
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-"""Utilities to work with JSON data format from VAT."""
-
-from robot.api import logger
-
-from resources.libraries.python.parsers.JsonParser import JsonParser
-
-
-class VatJsonUtil(object):
- """Utilities to work with JSON data format from VAT."""
-
- @staticmethod
- def _convert_mac_to_number_list(mac_address):
- """Convert MAC address string to list of decimal numbers.
-
- Converts a ":" separated MAC address to decimal number list as used
- in JSON interface dump.
-
- :param mac_address: MAC address.
- :type mac_address: str
- :returns: List representation of MAC address.
- :rtype: list
- """
- list_mac = []
- for num in mac_address.split(":"):
- list_mac.append(int(num, 16))
- return list_mac
-
- @staticmethod
- def get_vpp_interface_by_mac(interfaces_list, mac_address):
- """Return interface dictionary from interface_list by MAC address.
-
- Extracts interface dictionary from all of the interfaces in interfaces
- list parsed from JSON according to mac_address of the interface.
-
- :param interfaces_list: Interfaces parsed from JSON.
- :param mac_address: MAC address of interface we are looking for.
- :type interfaces_list: dict
- :type mac_address: str
- :returns: Interface from JSON.
- :rtype: dict
- """
- interface_dict = {}
- list_mac_address = VatJsonUtil._convert_mac_to_number_list(mac_address)
- logger.trace("MAC address {0} converted to list {1}."
- .format(mac_address, list_mac_address))
- for interface in interfaces_list:
- # TODO: create vat json integrity checking and move there
- if "l2_address" not in interface:
- raise KeyError(
- "key l2_address not found in interface dict."
- "Probably input list is not parsed from correct VAT "
- "json output.")
- if "l2_address_length" not in interface:
- raise KeyError(
- "key l2_address_length not found in interface "
- "dict. Probably input list is not parsed from correct "
- "VAT json output.")
- mac_from_json = interface["l2_address"][:6]
- if mac_from_json == list_mac_address:
- if interface["l2_address_length"] != 6:
- raise ValueError("l2_address_length value is not 6.")
- interface_dict = interface
- break
- return interface_dict
-
- @staticmethod
- def update_vpp_interface_data_from_json(node, interface_dump_json):
- """Update vpp node data in node__DICT from JSON interface dump.
-
- This method updates vpp interface names and sw if indexes according to
- interface MAC addresses found in interface_dump_json.
-
- :param node: Node dictionary.
- :param interface_dump_json: JSON output from dump_interface_list VAT
- command.
- :type node: dict
- :type interface_dump_json: str
- """
- interface_list = JsonParser().parse_data(interface_dump_json)
- for ifc in node['interfaces'].values():
- if_mac = ifc['mac_address']
- interface_dict = VatJsonUtil.get_vpp_interface_by_mac(
- interface_list, if_mac)
- if not interface_dict:
- logger.trace('Interface {0} not found by MAC {1}'
- .format(ifc, if_mac))
- continue
- ifc['name'] = interface_dict["interface_name"]
- ifc['vpp_sw_index'] = interface_dict["sw_if_index"]
- 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
- :returns: 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
- :returns: 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 sw_if_index {idx} has name'
- ' {name}.'.format(idx=sw_if_index,
- name=interface_name))
- return interface_name
- except KeyError:
- pass
- raise ValueError('Interface with sw_if_index {} not found.'
- .format(sw_if_index))
-
- @staticmethod
- def get_interface_mac_from_json(interface_dump_json, sw_if_index):
- """Get interface MAC address 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
- :returns: Interface MAC address.
- :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:
- mac_from_json = interface['l2_address'][:6] \
- if 'l2_address' in interface.keys() else ''
- mac_address = ':'.join('{:02x}'.format(item)
- for item in mac_from_json)
- logger.debug('Interface with sw_if_index {idx} has MAC'
- ' address {addr}.'.format(idx=sw_if_index,
- addr=mac_address))
- return mac_address
- except KeyError:
- pass
- raise ValueError('Interface with sw_if_index {idx} not found.'
- .format(idx=sw_if_index))
-
- @staticmethod
- def verify_vat_retval(vat_out, exp_retval=0, err_msg='VAT cmd failed'):
- """Verify return value of VAT command.
-
- VAT command JSON output should be object (dict in python) or array. We
- are looking for something like this: { "retval": 0 }. Verification is
- skipped if VAT output does not contain return value element or root
- elemet is array.
-
- :param vat_out: VAT command output in python representation of JSON.
- :param exp_retval: Expected return value (default 0).
- :err_msg: Message to be displayed in case of error (optional).
- :type vat_out: dict or list
- :type exp_retval: int
- :type err_msg: str
- :raises RuntimeError: If VAT command return value is incorrect.
- """
- if isinstance(vat_out, dict):
- retval = vat_out.get('retval')
- if retval is not None:
- if retval != exp_retval:
- raise RuntimeError(err_msg)
Code Review / csit.git / blobdiff