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vpp/extras/vpp_config/vpplib/QemuUtils.py
Klement Sekera d9b0c6fbf7 tests: replace pycodestyle with black 
Drop pycodestyle for code style checking in favor of black. Black is
much faster, stable PEP8 compliant code style checker offering also
automatic formatting. It aims to be very stable and produce smallest
diffs. It's used by many small and big projects.

Running checkstyle with black takes a few seconds with a terse output.
Thus, test-checkstyle-diff is no longer necessary.

Expand scope of checkstyle to all python files in the repo, replacing
test-checkstyle with checkstyle-python.

Also, fixstyle-python is now available for automatic style formatting.

Note: python virtualenv has been consolidated in test/Makefile,
test/requirements*.txt which will eventually be moved to a central
location.  This is required to simply the automated generation of
docker executor images in the CI.

Type: improvement
Change-Id: I022a326603485f58585e879ac0f697fceefbc9c8
Signed-off-by: Klement Sekera <klement.sekera@gmail.com>
Signed-off-by: Dave Wallace <dwallacelf@gmail.com>
2022-05-10 18:52:08 +00:00

749 lines
28 KiB
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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.
"""QEMU utilities library."""
from __future__ import absolute_import, division
from time import time, sleep
import json
import logging
from vpplib.VPPUtil import VPPUtil
from vpplib.constants import Constants
class NodeType(object):
"""Defines node types used in topology dictionaries."""
# Device Under Test (this node has VPP running on it)
DUT = "DUT"
# Traffic Generator (this node has traffic generator on it)
TG = "TG"
# Virtual Machine (this node running on DUT node)
VM = "VM"
class QemuUtils(object):
"""QEMU utilities."""
# noinspection PyDictCreation
def __init__(self, qemu_id=1):
self._qemu_id = qemu_id
# Path to QEMU binary
self._qemu_bin = "/usr/bin/qemu-system-x86_64"
# QEMU Machine Protocol socket
self._qmp_sock = "/tmp/qmp{0}.sock".format(self._qemu_id)
# QEMU Guest Agent socket
self._qga_sock = "/tmp/qga{0}.sock".format(self._qemu_id)
# QEMU PID file
self._pid_file = "/tmp/qemu{0}.pid".format(self._qemu_id)
self._qemu_opt = {}
# Default 1 CPU.
self._qemu_opt["smp"] = "-smp 1,sockets=1,cores=1,threads=1"
# Daemonize the QEMU process after initialization. Default one
# management interface.
self._qemu_opt["options"] = (
"-cpu host -daemonize -enable-kvm "
"-machine pc,accel=kvm,usb=off,mem-merge=off "
"-net nic,macaddr=52:54:00:00:{0:02x}:ff -balloon none".format(
self._qemu_id
)
)
self._qemu_opt["ssh_fwd_port"] = 10021 + qemu_id
# Default serial console port
self._qemu_opt["serial_port"] = 4555 + qemu_id
# Default 512MB virtual RAM
self._qemu_opt["mem_size"] = 512
# Default huge page mount point, required for Vhost-user interfaces.
self._qemu_opt["huge_mnt"] = "/mnt/huge"
# Default do not allocate huge pages.
self._qemu_opt["huge_allocate"] = False
# Default image for CSIT virl setup
self._qemu_opt["disk_image"] = "/var/lib/vm/vhost-nested.img"
# VM node info dict
self._vm_info = {
"type": NodeType.VM,
"port": self._qemu_opt["ssh_fwd_port"],
"username": "cisco",
"password": "cisco",
"interfaces": {},
}
# Virtio queue count
self._qemu_opt["queues"] = 1
self._vhost_id = 0
self._ssh = None
self._node = None
self._socks = [self._qmp_sock, self._qga_sock]
def qemu_set_bin(self, path):
"""Set binary path for QEMU.
:param path: Absolute path in filesystem.
:type path: str
"""
self._qemu_bin = path
def qemu_set_smp(self, cpus, cores, threads, sockets):
"""Set SMP option for QEMU.
:param cpus: Number of CPUs.
:param cores: Number of CPU cores on one socket.
:param threads: Number of threads on one CPU core.
:param sockets: Number of discrete sockets in the system.
:type cpus: int
:type cores: int
:type threads: int
:type sockets: int
"""
self._qemu_opt["smp"] = "-smp {},cores={},threads={},sockets={}".format(
cpus, cores, threads, sockets
)
def qemu_set_ssh_fwd_port(self, fwd_port):
"""Set host port for guest SSH forwarding.
:param fwd_port: Port number on host for guest SSH forwarding.
:type fwd_port: int
"""
self._qemu_opt["ssh_fwd_port"] = fwd_port
self._vm_info["port"] = fwd_port
def qemu_set_serial_port(self, port):
"""Set serial console port.
:param port: Serial console port.
:type port: int
"""
self._qemu_opt["serial_port"] = port
def qemu_set_mem_size(self, mem_size):
"""Set virtual RAM size.
:param mem_size: RAM size in Mega Bytes.
:type mem_size: int
"""
self._qemu_opt["mem_size"] = int(mem_size)
def qemu_set_huge_mnt(self, huge_mnt):
"""Set hugefile mount point.
:param huge_mnt: System hugefile mount point.
:type huge_mnt: int
"""
self._qemu_opt["huge_mnt"] = huge_mnt
def qemu_set_huge_allocate(self):
"""Set flag to allocate more huge pages if needed."""
self._qemu_opt["huge_allocate"] = True
def qemu_set_disk_image(self, disk_image):
"""Set disk image.
:param disk_image: Path of the disk image.
:type disk_image: str
"""
self._qemu_opt["disk_image"] = disk_image
def qemu_set_affinity(self, *host_cpus):
"""Set qemu affinity by getting thread PIDs via QMP and taskset to list
of CPU cores.
:param host_cpus: List of CPU cores.
:type host_cpus: list
"""
qemu_cpus = self._qemu_qmp_exec("query-cpus")["return"]
if len(qemu_cpus) != len(host_cpus):
logging.debug(
"Host CPU count {0}, Qemu Thread count {1}".format(
len(host_cpus), len(qemu_cpus)
)
)
raise ValueError("Host CPU count must match Qemu Thread count")
for qemu_cpu, host_cpu in zip(qemu_cpus, host_cpus):
cmd = "taskset -pc {0} {1}".format(host_cpu, qemu_cpu["thread_id"])
(ret_code, _, stderr) = self._ssh.exec_command_sudo(cmd)
if int(ret_code) != 0:
logging.debug("Set affinity failed {0}".format(stderr))
raise RuntimeError(
"Set affinity failed on {0}".format(self._node["host"])
)
def qemu_set_scheduler_policy(self):
"""Set scheduler policy to SCHED_RR with priority 1 for all Qemu CPU
processes.
:raises RuntimeError: Set scheduler policy failed.
"""
qemu_cpus = self._qemu_qmp_exec("query-cpus")["return"]
for qemu_cpu in qemu_cpus:
cmd = "chrt -r -p 1 {0}".format(qemu_cpu["thread_id"])
(ret_code, _, stderr) = self._ssh.exec_command_sudo(cmd)
if int(ret_code) != 0:
logging.debug("Set SCHED_RR failed {0}".format(stderr))
raise RuntimeError(
"Set SCHED_RR failed on {0}".format(self._node["host"])
)
def qemu_set_node(self, node):
"""Set node to run QEMU on.
:param node: Node to run QEMU on.
:type node: dict
"""
self._node = node
self._vm_info["host"] = node["host"]
def qemu_add_vhost_user_if(self, socket, server=True, mac=None):
"""Add Vhost-user interface.
:param socket: Path of the unix socket.
:param server: If True the socket shall be a listening socket.
:param mac: Vhost-user interface MAC address (optional, otherwise is
used auto-generated MAC 52:54:00:00:xx:yy).
:type socket: str
:type server: bool
:type mac: str
"""
self._vhost_id += 1
# Create unix socket character device.
chardev = " -chardev socket,id=char{0},path={1}".format(self._vhost_id, socket)
if server is True:
chardev += ",server"
self._qemu_opt["options"] += chardev
# Create Vhost-user network backend.
netdev = " -netdev vhost-user,id=vhost{0},chardev=char{0},queues={1}".format(
self._vhost_id, self._qemu_opt["queues"]
)
self._qemu_opt["options"] += netdev
# If MAC is not specified use auto-generated MAC address based on
# template 52:54:00:00:<qemu_id>:<vhost_id>, e.g. vhost1 MAC of QEMU
# with ID 1 is 52:54:00:00:01:01
if mac is None:
mac = "52:54:00:00:{0:02x}:{1:02x}".format(self._qemu_id, self._vhost_id)
extend_options = (
"mq=on,csum=off,gso=off,guest_tso4=off,"
"guest_tso6=off,guest_ecn=off,mrg_rxbuf=off"
)
# Create Virtio network device.
device = " -device virtio-net-pci,netdev=vhost{0},mac={1},{2}".format(
self._vhost_id, mac, extend_options
)
self._qemu_opt["options"] += device
# Add interface MAC and socket to the node dict
if_data = {"mac_address": mac, "socket": socket}
if_name = "vhost{}".format(self._vhost_id)
self._vm_info["interfaces"][if_name] = if_data
# Add socket to the socket list
self._socks.append(socket)
def _qemu_qmp_exec(self, cmd):
"""Execute QMP command.
QMP is JSON based protocol which allows to control QEMU instance.
:param cmd: QMP command to execute.
:type cmd: str
:return: Command output in python representation of JSON format. The
{ "return": {} } response is QMP's success response. An error
response will contain the "error" keyword instead of "return".
"""
# To enter command mode, the qmp_capabilities command must be issued.
qmp_cmd = (
'echo "{ \\"execute\\": \\"qmp_capabilities\\" }'
'{ \\"execute\\": \\"'
+ cmd
+ '\\" }" | sudo -S socat - UNIX-CONNECT:'
+ self._qmp_sock
)
(ret_code, stdout, stderr) = self._ssh.exec_command(qmp_cmd)
if int(ret_code) != 0:
logging.debug("QMP execute failed {0}".format(stderr))
raise RuntimeError(
'QMP execute "{0}"' " failed on {1}".format(cmd, self._node["host"])
)
logging.debug(stdout)
# Skip capabilities negotiation messages.
out_list = stdout.splitlines()
if len(out_list) < 3:
raise RuntimeError("Invalid QMP output on {0}".format(self._node["host"]))
return json.loads(out_list[2])
def _qemu_qga_flush(self):
"""Flush the QGA parser state"""
qga_cmd = (
'(printf "\xFF"; sleep 1) | '
"sudo -S socat - UNIX-CONNECT:" + self._qga_sock
)
# TODO: probably need something else
(ret_code, stdout, stderr) = self._ssh.exec_command(qga_cmd)
if int(ret_code) != 0:
logging.debug("QGA execute failed {0}".format(stderr))
raise RuntimeError(
'QGA execute "{0}" ' "failed on {1}".format(qga_cmd, self._node["host"])
)
logging.debug(stdout)
if not stdout:
return {}
return json.loads(stdout.split("\n", 1)[0])
def _qemu_qga_exec(self, cmd):
"""Execute QGA command.
QGA provide access to a system-level agent via standard QMP commands.
:param cmd: QGA command to execute.
:type cmd: str
"""
qga_cmd = (
'(echo "{ \\"execute\\": \\"'
+ cmd
+ '\\" }"; sleep 1) | sudo -S socat - UNIX-CONNECT:'
+ self._qga_sock
)
(ret_code, stdout, stderr) = self._ssh.exec_command(qga_cmd)
if int(ret_code) != 0:
logging.debug("QGA execute failed {0}".format(stderr))
raise RuntimeError(
'QGA execute "{0}"' " failed on {1}".format(cmd, self._node["host"])
)
logging.debug(stdout)
if not stdout:
return {}
return json.loads(stdout.split("\n", 1)[0])
def _wait_until_vm_boot(self, timeout=60):
"""Wait until QEMU VM is booted.
Ping QEMU guest agent each 5s until VM booted or timeout.
:param timeout: Waiting timeout in seconds (optional, default 60s).
:type timeout: int
"""
start = time()
while True:
if time() - start > timeout:
raise RuntimeError(
"timeout, VM {0} not booted on {1}".format(
self._qemu_opt["disk_image"], self._node["host"]
)
)
out = None
try:
self._qemu_qga_flush()
out = self._qemu_qga_exec("guest-ping")
except ValueError:
logging.debug("QGA guest-ping unexpected output {}".format(out))
# Empty output - VM not booted yet
if not out:
sleep(5)
# Non-error return - VM booted
elif out.get("return") is not None:
break
# Skip error and wait
elif out.get("error") is not None:
sleep(5)
else:
# If there is an unexpected output from QGA guest-info, try
# again until timeout.
logging.debug("QGA guest-ping unexpected output {}".format(out))
logging.debug(
"VM {0} booted on {1}".format(
self._qemu_opt["disk_image"], self._node["host"]
)
)
def _update_vm_interfaces(self):
"""Update interface names in VM node dict."""
# Send guest-network-get-interfaces command via QGA, output example:
# {"return": [{"name": "eth0", "hardware-address": "52:54:00:00:04:01"},
# {"name": "eth1", "hardware-address": "52:54:00:00:04:02"}]}
out = self._qemu_qga_exec("guest-network-get-interfaces")
interfaces = out.get("return")
mac_name = {}
if not interfaces:
raise RuntimeError(
"Get VM {0} interface list failed on {1}".format(
self._qemu_opt["disk_image"], self._node["host"]
)
)
# Create MAC-name dict
for interface in interfaces:
if "hardware-address" not in interface:
continue
mac_name[interface["hardware-address"]] = interface["name"]
# Match interface by MAC and save interface name
for interface in self._vm_info["interfaces"].values():
mac = interface.get("mac_address")
if_name = mac_name.get(mac)
if if_name is None:
logging.debug("Interface name for MAC {} not found".format(mac))
else:
interface["name"] = if_name
def _huge_page_check(self, allocate=False):
"""Huge page check."""
huge_mnt = self._qemu_opt.get("huge_mnt")
mem_size = self._qemu_opt.get("mem_size")
# Get huge pages information
huge_size = self._get_huge_page_size()
huge_free = self._get_huge_page_free(huge_size)
huge_total = self._get_huge_page_total(huge_size)
# Check if memory reqested by qemu is available on host
if (mem_size * 1024) > (huge_free * huge_size):
# If we want to allocate hugepage dynamically
if allocate:
mem_needed = abs((huge_free * huge_size) - (mem_size * 1024))
huge_to_allocate = ((mem_needed // huge_size) * 2) + huge_total
max_map_count = huge_to_allocate * 4
# Increase maximum number of memory map areas a
# process may have
cmd = 'echo "{0}" | sudo tee /proc/sys/vm/max_map_count'.format(
max_map_count
)
(ret_code, _, stderr) = self._ssh.exec_command_sudo(cmd)
# Increase hugepage count
cmd = 'echo "{0}" | sudo tee /proc/sys/vm/nr_hugepages'.format(
huge_to_allocate
)
(ret_code, _, stderr) = self._ssh.exec_command_sudo(cmd)
if int(ret_code) != 0:
logging.debug("Mount huge pages failed {0}".format(stderr))
raise RuntimeError(
"Mount huge pages failed on {0}".format(self._node["host"])
)
# If we do not want to allocate dynamicaly end with error
else:
raise RuntimeError(
"Not enough free huge pages: {0}, "
"{1} MB".format(huge_free, huge_free * huge_size)
)
# Check if huge pages mount point exist
has_huge_mnt = False
(_, output, _) = self._ssh.exec_command("cat /proc/mounts")
for line in output.splitlines():
# Try to find something like:
# none /mnt/huge hugetlbfs rw,relatime,pagesize=2048k 0 0
mount = line.split()
if mount[2] == "hugetlbfs" and mount[1] == huge_mnt:
has_huge_mnt = True
break
# If huge page mount point not exist create one
if not has_huge_mnt:
cmd = "mkdir -p {0}".format(huge_mnt)
(ret_code, _, stderr) = self._ssh.exec_command_sudo(cmd)
if int(ret_code) != 0:
logging.debug("Create mount dir failed: {0}".format(stderr))
raise RuntimeError(
"Create mount dir failed on {0}".format(self._node["host"])
)
cmd = "mount -t hugetlbfs -o pagesize=2048k none {0}".format(huge_mnt)
(ret_code, _, stderr) = self._ssh.exec_command_sudo(cmd)
if int(ret_code) != 0:
logging.debug("Mount huge pages failed {0}".format(stderr))
raise RuntimeError(
"Mount huge pages failed on {0}".format(self._node["host"])
)
def _get_huge_page_size(self):
"""Get default size of huge pages in system.
:returns: Default size of free huge pages in system.
:rtype: int
:raises: RuntimeError if reading failed for three times.
"""
# TODO: remove to dedicated library
cmd_huge_size = "grep Hugepagesize /proc/meminfo | awk '{ print $2 }'"
for _ in range(3):
(ret, out, _) = self._ssh.exec_command_sudo(cmd_huge_size)
if ret == 0:
try:
huge_size = int(out)
except ValueError:
logging.debug("Reading huge page size information failed")
else:
break
else:
raise RuntimeError("Getting huge page size information failed.")
return huge_size
def _get_huge_page_free(self, huge_size):
"""Get total number of huge pages in system.
:param huge_size: Size of hugepages.
:type huge_size: int
:returns: Number of free huge pages in system.
:rtype: int
:raises: RuntimeError if reading failed for three times.
"""
# TODO: add numa aware option
# TODO: remove to dedicated library
cmd_huge_free = (
"cat /sys/kernel/mm/hugepages/hugepages-{0}kB/"
"free_hugepages".format(huge_size)
)
for _ in range(3):
(ret, out, _) = self._ssh.exec_command_sudo(cmd_huge_free)
if ret == 0:
try:
huge_free = int(out)
except ValueError:
logging.debug("Reading free huge pages information failed")
else:
break
else:
raise RuntimeError("Getting free huge pages information failed.")
return huge_free
def _get_huge_page_total(self, huge_size):
"""Get total number of huge pages in system.
:param huge_size: Size of hugepages.
:type huge_size: int
:returns: Total number of huge pages in system.
:rtype: int
:raises: RuntimeError if reading failed for three times.
"""
# TODO: add numa aware option
# TODO: remove to dedicated library
cmd_huge_total = (
"cat /sys/kernel/mm/hugepages/hugepages-{0}kB/"
"nr_hugepages".format(huge_size)
)
for _ in range(3):
(ret, out, _) = self._ssh.exec_command_sudo(cmd_huge_total)
if ret == 0:
try:
huge_total = int(out)
except ValueError:
logging.debug("Reading total huge pages information failed")
else:
break
else:
raise RuntimeError("Getting total huge pages information failed.")
return huge_total
def qemu_start(self):
"""Start QEMU and wait until VM boot.
:return: VM node info.
:rtype: dict
.. note:: First set at least node to run QEMU on.
.. warning:: Starts only one VM on the node.
"""
# SSH forwarding
ssh_fwd = "-net user,hostfwd=tcp::{0}-:22".format(
self._qemu_opt.get("ssh_fwd_port")
)
# Memory and huge pages
mem = (
"-object memory-backend-file,id=mem,size={0}M,mem-path={1},"
"share=on -m {0} -numa node,memdev=mem".format(
self._qemu_opt.get("mem_size"), self._qemu_opt.get("huge_mnt")
)
)
# By default check only if hugepages are available.
# If 'huge_allocate' is set to true try to allocate as well.
self._huge_page_check(allocate=self._qemu_opt.get("huge_allocate"))
# Disk option
drive = "-drive file={0},format=raw,cache=none,if=virtio".format(
self._qemu_opt.get("disk_image")
)
# Setup QMP via unix socket
qmp = "-qmp unix:{0},server,nowait".format(self._qmp_sock)
# Setup serial console
serial = (
"-chardev socket,host=127.0.0.1,port={0},id=gnc0,server,"
"nowait -device isa-serial,chardev=gnc0".format(
self._qemu_opt.get("serial_port")
)
)
# Setup QGA via chardev (unix socket) and isa-serial channel
qga = (
"-chardev socket,path={0},server,nowait,id=qga0 "
"-device isa-serial,chardev=qga0".format(self._qga_sock)
)
# Graphic setup
graphic = "-monitor none -display none -vga none"
# PID file
pid = "-pidfile {}".format(self._pid_file)
# Run QEMU
cmd = "{0} {1} {2} {3} {4} {5} {6} {7} {8} {9} {10}".format(
self._qemu_bin,
self._qemu_opt.get("smp"),
mem,
ssh_fwd,
self._qemu_opt.get("options"),
drive,
qmp,
serial,
qga,
graphic,
pid,
)
(ret_code, _, stderr) = self._ssh.exec_command_sudo(cmd, timeout=300)
if int(ret_code) != 0:
logging.debug("QEMU start failed {0}".format(stderr))
raise RuntimeError("QEMU start failed on {0}".format(self._node["host"]))
logging.debug("QEMU running")
# Wait until VM boot
try:
self._wait_until_vm_boot()
except RuntimeError:
self.qemu_kill_all()
self.qemu_clear_socks()
raise
# Update interface names in VM node dict
self._update_vm_interfaces()
# Return VM node dict
return self._vm_info
def qemu_quit(self):
"""Quit the QEMU emulator."""
out = self._qemu_qmp_exec("quit")
err = out.get("error")
if err is not None:
raise RuntimeError(
"QEMU quit failed on {0}, error: {1}".format(
self._node["host"], json.dumps(err)
)
)
def qemu_system_powerdown(self):
"""Power down the system (if supported)."""
out = self._qemu_qmp_exec("system_powerdown")
err = out.get("error")
if err is not None:
raise RuntimeError(
"QEMU system powerdown failed on {0}, "
"error: {1}".format(self._node["host"], json.dumps(err))
)
def qemu_system_reset(self):
"""Reset the system."""
out = self._qemu_qmp_exec("system_reset")
err = out.get("error")
if err is not None:
raise RuntimeError(
"QEMU system reset failed on {0}, "
"error: {1}".format(self._node["host"], json.dumps(err))
)
def qemu_kill(self):
"""Kill qemu process."""
# Note: in QEMU start phase there are 3 QEMU processes because we
# daemonize QEMU
self._ssh.exec_command_sudo("chmod +r {}".format(self._pid_file))
self._ssh.exec_command_sudo("kill -SIGKILL $(cat {})".format(self._pid_file))
# Delete PID file
cmd = "rm -f {}".format(self._pid_file)
self._ssh.exec_command_sudo(cmd)
def qemu_kill_all(self, node=None):
"""Kill all qemu processes on DUT node if specified.
:param node: Node to kill all QEMU processes on.
:type node: dict
"""
if node:
self.qemu_set_node(node)
self._ssh.exec_command_sudo("pkill -SIGKILL qemu")
def qemu_clear_socks(self):
"""Remove all sockets created by QEMU."""
# If serial console port still open kill process
cmd = "fuser -k {}/tcp".format(self._qemu_opt.get("serial_port"))
self._ssh.exec_command_sudo(cmd)
# Delete all created sockets
for sock in self._socks:
cmd = "rm -f {}".format(sock)
self._ssh.exec_command_sudo(cmd)
def qemu_system_status(self):
"""Return current VM status.
VM should be in following status:
- debug: QEMU running on a debugger
- finish-migrate: paused to finish the migration process
- inmigrate: waiting for an incoming migration
- internal-error: internal error has occurred
- io-error: the last IOP has failed
- paused: paused
- postmigrate: paused following a successful migrate
- prelaunch: QEMU was started with -S and guest has not started
- restore-vm: paused to restore VM state
- running: actively running
- save-vm: paused to save the VM state
- shutdown: shut down (and -no-shutdown is in use)
- suspended: suspended (ACPI S3)
- watchdog: watchdog action has been triggered
- guest-panicked: panicked as a result of guest OS panic
:return: VM status.
:rtype: str
"""
out = self._qemu_qmp_exec("query-status")
ret = out.get("return")
if ret is not None:
return ret.get("status")
else:
err = out.get("error")
raise RuntimeError(
"QEMU query-status failed on {0}, "
"error: {1}".format(self._node["host"], json.dumps(err))
)
@staticmethod
def build_qemu(node, force_install=False, apply_patch=False):
"""Build QEMU from sources.
:param node: Node to build QEMU on.
:param force_install: If True, then remove previous build.
:param apply_patch: If True, then apply patches from qemu_patches dir.
:type node: dict
:type force_install: bool
:type apply_patch: bool
:raises: RuntimeError if building QEMU failed.
"""
directory = " --directory={0}".format(Constants.QEMU_INSTALL_DIR)
version = " --version={0}".format(Constants.QEMU_INSTALL_VERSION)
force = " --force" if force_install else ""
patch = " --patch" if apply_patch else ""
(ret_code, stdout, stderr) = VPPUtil.exec_command(
"sudo -E sh -c '{0}/{1}/qemu_build.sh{2}{3}{4}{5}'".format(
Constants.REMOTE_FW_DIR,
Constants.RESOURCES_LIB_SH,
version,
directory,
force,
patch,
),
1000,
)
if int(ret_code) != 0:
logging.debug("QEMU build failed {0}".format(stdout + stderr))
raise RuntimeError("QEMU build failed on {0}".format(node["host"]))
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