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# Copyright (c) 2019 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.
"""QEMU Manager library."""
from collections import OrderedDict
from resources.libraries.python.Constants import Constants
from resources.libraries.python.CpuUtils import CpuUtils
from resources.libraries.python.QemuUtils import QemuUtils
from resources.libraries.python.topology import NodeType
__all__ = ["QemuManager"]
class QemuManager(object):
"""QEMU lifecycle management class"""
# Use one instance of class per tests.
ROBOT_LIBRARY_SCOPE = 'TEST CASE'
def __init__(self, nodes):
"""Init QemuManager object."""
self.machines = None
self.machines_affinity = None
self.nodes = nodes
def initialize(self):
"""Initialize QemuManager object."""
self.machines = OrderedDict()
self.machines_affinity = OrderedDict()
def construct_vms_on_node(self, **kwargs):
"""Construct 1..Mx1..N VMs(s) on node with specified name.
:param kwargs: Named parameters.
:type kwargs: dict
"""
node = kwargs['node']
nf_chains = int(kwargs['nf_chains'])
nf_nodes = int(kwargs['nf_nodes'])
queues = kwargs['rxq_count_int'] if kwargs['auto_scale'] else 1
vs_dtc = kwargs['vs_dtc']
nf_dtc = kwargs['vs_dtc'] if kwargs['auto_scale'] else kwargs['nf_dtc']
nf_dtcr = kwargs['nf_dtcr'] if isinstance(kwargs['nf_dtcr'], int) else 2
img = Constants.QEMU_VM_KERNEL
for nf_chain in range(1, nf_chains + 1):
for nf_node in range(1, nf_nodes + 1):
qemu_id = (nf_chain - 1) * nf_nodes + nf_node
name = '{node}_{qemu_id}'.format(node=node, qemu_id=qemu_id)
sock1 = '/var/run/vpp/sock-{qemu_id}-1'.format(qemu_id=qemu_id)
sock2 = '/var/run/vpp/sock-{qemu_id}-2'.format(qemu_id=qemu_id)
vif1_mac = kwargs['tg_if1_mac'] if nf_node == 1 \
else '52:54:00:00:{id:02x}:02'.format(id=qemu_id - 1)
vif2_mac = kwargs['tg_if2_mac'] if nf_node == nf_nodes \
else '52:54:00:00:{id:02x}:01'.format(id=qemu_id + 1)
self.machines_affinity[name] = CpuUtils.get_affinity_nf(
nodes=self.nodes, node=node, nf_chains=nf_chains,
nf_nodes=nf_nodes, nf_chain=nf_chain, nf_node=nf_node,
vs_dtc=vs_dtc, nf_dtc=nf_dtc, nf_dtcr=nf_dtcr)
self.machines[name] = QemuUtils(
node=self.nodes[node], qemu_id=qemu_id,
smp=len(self.machines_affinity[name]), mem=4096,
vnf=kwargs['vnf'], img=img)
self.machines[name].configure_kernelvm_vnf(
mac1='52:54:00:00:{id:02x}:01'.format(id=qemu_id),
mac2='52:54:00:00:{id:02x}:02'.format(id=qemu_id),
vif1_mac=vif1_mac,
vif2_mac=vif2_mac,
queues=queues,
jumbo_frames=kwargs['jumbo'])
self.machines[name].qemu_add_vhost_user_if(
sock1, jumbo_frames=kwargs['jumbo'], queues=queues,
queue_size=kwargs['perf_qemu_qsz'])
self.machines[name].qemu_add_vhost_user_if(
sock2, jumbo_frames=kwargs['jumbo'], queues=queues,
queue_size=kwargs['perf_qemu_qsz'])
def construct_vms_on_all_nodes(self, **kwargs):
"""Construct 1..Mx1..N VMs(s) with specified name on all nodes.
:param kwargs: Named parameters.
:type kwargs: dict
"""
self.initialize()
for node in self.nodes:
if self.nodes[node]['type'] == NodeType.DUT:
self.construct_vms_on_node(node=node, **kwargs)
def start_all_vms(self, pinning=False):
"""Start all added VMs in manager.
:param pinning: If True, then do also QEMU process pinning.
:type pinning: bool
"""
for machine, machine_affinity in zip(self.machines.values(),
self.machines_affinity.values()):
machine.qemu_start()
if pinning:
machine.qemu_set_affinity(*machine_affinity)
def set_scheduler_all_vms(self):
"""Set CFS scheduler policy on all VMs in manager."""
for machine in self.machines.values():
machine.qemu_set_scheduler_policy()
def kill_all_vms(self, force=False):
"""Kill all added VMs in manager.
:param force: Force kill all Qemu instances by pkill qemu if True.
:type force: bool
"""
for machine in self.machines.values():
if force:
machine.qemu_kill_all()
else:
machine.qemu_kill()
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