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# Copyright (c) 2016 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.
"""Packet trace library."""
from resources.libraries.python.VatExecutor import VatExecutor, VatTerminal
from resources.libraries.python.topology import NodeType
class Trace(object):
"""This class provides methods to manipulate the VPP packet trace."""
@staticmethod
def show_packet_trace_on_all_duts(nodes, maximum=None):
"""Show VPP packet trace.
:param nodes: Nodes from which the packet trace will be displayed.
:param maximum: Maximum number of packet traces to be displayed.
:type nodes: list
:type maximum: int
"""
maximum = "max {count}".format(count=maximum) if maximum is not None\
else ""
for node in nodes.values():
if node['type'] == NodeType.DUT:
with VatTerminal(node, json_param=False) as vat:
vat.vat_terminal_exec_cmd_from_template(
'show_trace.vat', maximum=maximum)
@staticmethod
def clear_packet_trace_on_all_duts(nodes):
"""Clear VPP packet trace.
:param nodes: Nodes where the packet trace will be cleared.
:type nodes: list
"""
for node in nodes.values():
if node['type'] == NodeType.DUT:
vat = VatExecutor()
vat.execute_script("clear_trace.vat", node, json_out=False)
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