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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.
"""VPP counters utilities library."""
import time
from topology import NodeType, Topology
from VatExecutor import VatExecutor, VatTerminal
from robot.api import logger
class VppCounters(object):
"""VPP counters utilities."""
def __init__(self):
self._stats_table = None
def vpp_nodes_clear_interface_counters(self, nodes):
"""Clear interface counters on all VPP nodes in topology.
:param nodes: Nodes in topology.
:type nodes: dict
"""
for node in nodes.values():
if node['type'] == NodeType.DUT:
self.vpp_clear_interface_counters(node)
@staticmethod
def vpp_clear_interface_counters(node):
"""Clear interface counters on VPP node.
:param node: Node to clear interface counters on.
:type node: dict
"""
vat = VatExecutor()
vat.execute_script('clear_interface.vat', node)
vat.script_should_have_passed()
def vpp_dump_stats_table(self, node):
"""Dump stats table on VPP node.
:param node: Node to dump stats table on.
:type node: dict
:return: Stats table.
"""
vat = VatTerminal(node)
vat.vat_terminal_exec_cmd('want_stats enable')
for _ in range(0, 12):
stats_table = vat.vat_terminal_exec_cmd('dump_stats_table')
if_counters = stats_table['interface_counters']
if len(if_counters) > 0:
self._stats_table = stats_table
vat.vat_terminal_close()
return stats_table
time.sleep(1)
vat.vat_terminal_close()
return None
def vpp_get_ipv4_interface_counter(self, node, interface):
return self.vpp_get_ipv46_interface_counter(node, interface, False)
def vpp_get_ipv6_interface_counter(self, node, interface):
return self.vpp_get_ipv46_interface_counter(node, interface, True)
def vpp_get_ipv46_interface_counter(self, node, interface, is_ipv6=True):
"""Return interface IPv4/IPv6 counter
:param node: Node to get interface IPv4/IPv6 counter on.
:param interface: Interface name.
:type node: dict
:type interface: str
:return: Interface IPv4/IPv6 counter.
:param is_ipv6: specify IP version
:type is_ipv6: bool
:rtype: int
"""
version = 'ip6' if is_ipv6 else 'ip4'
topo = Topology()
if_index = topo.get_interface_sw_index(node, interface)
if if_index is None:
logger.trace('{i} sw_index not found.'.format(i=interface))
return 0
if_counters = self._stats_table.get('interface_counters')
if if_counters is None or len(if_counters) == 0:
logger.trace('No interface counters.')
return 0
for counter in if_counters:
if counter['vnet_counter_type'] == version:
data = counter['data']
return data[if_index]
logger.trace('{i} {v} counter not found.'.format(i=interface,
v=version))
return 0
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