31719c37f5
The 'arch' property gives a hint on which architecture the guest image runs. This can be use to select the correct QEMU binary path. Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <20181013004034.6968-6-f4bug@amsat.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Fam Zheng <famz@redhat.com>
281 lines
10 KiB
Python
Executable File
281 lines
10 KiB
Python
Executable File
#!/usr/bin/env python
|
|
#
|
|
# VM testing base class
|
|
#
|
|
# Copyright 2017 Red Hat Inc.
|
|
#
|
|
# Authors:
|
|
# Fam Zheng <famz@redhat.com>
|
|
#
|
|
# This code is licensed under the GPL version 2 or later. See
|
|
# the COPYING file in the top-level directory.
|
|
#
|
|
|
|
from __future__ import print_function
|
|
import os
|
|
import sys
|
|
import logging
|
|
import time
|
|
import datetime
|
|
sys.path.append(os.path.join(os.path.dirname(__file__), "..", "..", "scripts"))
|
|
from qemu import QEMUMachine, kvm_available
|
|
import subprocess
|
|
import hashlib
|
|
import optparse
|
|
import atexit
|
|
import tempfile
|
|
import shutil
|
|
import multiprocessing
|
|
import traceback
|
|
|
|
SSH_KEY = open(os.path.join(os.path.dirname(__file__),
|
|
"..", "keys", "id_rsa")).read()
|
|
SSH_PUB_KEY = open(os.path.join(os.path.dirname(__file__),
|
|
"..", "keys", "id_rsa.pub")).read()
|
|
|
|
class BaseVM(object):
|
|
GUEST_USER = "qemu"
|
|
GUEST_PASS = "qemupass"
|
|
ROOT_PASS = "qemupass"
|
|
|
|
# The script to run in the guest that builds QEMU
|
|
BUILD_SCRIPT = ""
|
|
# The guest name, to be overridden by subclasses
|
|
name = "#base"
|
|
# The guest architecture, to be overridden by subclasses
|
|
arch = "#arch"
|
|
def __init__(self, debug=False, vcpus=None):
|
|
self._guest = None
|
|
self._tmpdir = os.path.realpath(tempfile.mkdtemp(prefix="vm-test-",
|
|
suffix=".tmp",
|
|
dir="."))
|
|
atexit.register(shutil.rmtree, self._tmpdir)
|
|
|
|
self._ssh_key_file = os.path.join(self._tmpdir, "id_rsa")
|
|
open(self._ssh_key_file, "w").write(SSH_KEY)
|
|
subprocess.check_call(["chmod", "600", self._ssh_key_file])
|
|
|
|
self._ssh_pub_key_file = os.path.join(self._tmpdir, "id_rsa.pub")
|
|
open(self._ssh_pub_key_file, "w").write(SSH_PUB_KEY)
|
|
|
|
self.debug = debug
|
|
self._stderr = sys.stderr
|
|
self._devnull = open(os.devnull, "w")
|
|
if self.debug:
|
|
self._stdout = sys.stdout
|
|
else:
|
|
self._stdout = self._devnull
|
|
self._args = [ \
|
|
"-nodefaults", "-m", "4G",
|
|
"-cpu", "max",
|
|
"-netdev", "user,id=vnet,hostfwd=:127.0.0.1:0-:22",
|
|
"-device", "virtio-net-pci,netdev=vnet",
|
|
"-vnc", "127.0.0.1:0,to=20",
|
|
"-serial", "file:%s" % os.path.join(self._tmpdir, "serial.out")]
|
|
if vcpus and vcpus > 1:
|
|
self._args += ["-smp", str(vcpus)]
|
|
if kvm_available():
|
|
self._args += ["-enable-kvm"]
|
|
else:
|
|
logging.info("KVM not available, not using -enable-kvm")
|
|
self._data_args = []
|
|
|
|
def _download_with_cache(self, url, sha256sum=None):
|
|
def check_sha256sum(fname):
|
|
if not sha256sum:
|
|
return True
|
|
checksum = subprocess.check_output(["sha256sum", fname]).split()[0]
|
|
return sha256sum == checksum
|
|
|
|
cache_dir = os.path.expanduser("~/.cache/qemu-vm/download")
|
|
if not os.path.exists(cache_dir):
|
|
os.makedirs(cache_dir)
|
|
fname = os.path.join(cache_dir, hashlib.sha1(url).hexdigest())
|
|
if os.path.exists(fname) and check_sha256sum(fname):
|
|
return fname
|
|
logging.debug("Downloading %s to %s...", url, fname)
|
|
subprocess.check_call(["wget", "-c", url, "-O", fname + ".download"],
|
|
stdout=self._stdout, stderr=self._stderr)
|
|
os.rename(fname + ".download", fname)
|
|
return fname
|
|
|
|
def _ssh_do(self, user, cmd, check, interactive=False):
|
|
ssh_cmd = ["ssh", "-q",
|
|
"-o", "StrictHostKeyChecking=no",
|
|
"-o", "UserKnownHostsFile=" + os.devnull,
|
|
"-o", "ConnectTimeout=1",
|
|
"-p", self.ssh_port, "-i", self._ssh_key_file]
|
|
if interactive:
|
|
ssh_cmd += ['-t']
|
|
assert not isinstance(cmd, str)
|
|
ssh_cmd += ["%s@127.0.0.1" % user] + list(cmd)
|
|
logging.debug("ssh_cmd: %s", " ".join(ssh_cmd))
|
|
r = subprocess.call(ssh_cmd)
|
|
if check and r != 0:
|
|
raise Exception("SSH command failed: %s" % cmd)
|
|
return r
|
|
|
|
def ssh(self, *cmd):
|
|
return self._ssh_do(self.GUEST_USER, cmd, False)
|
|
|
|
def ssh_interactive(self, *cmd):
|
|
return self._ssh_do(self.GUEST_USER, cmd, False, True)
|
|
|
|
def ssh_root(self, *cmd):
|
|
return self._ssh_do("root", cmd, False)
|
|
|
|
def ssh_check(self, *cmd):
|
|
self._ssh_do(self.GUEST_USER, cmd, True)
|
|
|
|
def ssh_root_check(self, *cmd):
|
|
self._ssh_do("root", cmd, True)
|
|
|
|
def build_image(self, img):
|
|
raise NotImplementedError
|
|
|
|
def add_source_dir(self, src_dir):
|
|
name = "data-" + hashlib.sha1(src_dir).hexdigest()[:5]
|
|
tarfile = os.path.join(self._tmpdir, name + ".tar")
|
|
logging.debug("Creating archive %s for src_dir dir: %s", tarfile, src_dir)
|
|
subprocess.check_call(["./scripts/archive-source.sh", tarfile],
|
|
cwd=src_dir, stdin=self._devnull,
|
|
stdout=self._stdout, stderr=self._stderr)
|
|
self._data_args += ["-drive",
|
|
"file=%s,if=none,id=%s,cache=writeback,format=raw" % \
|
|
(tarfile, name),
|
|
"-device",
|
|
"virtio-blk,drive=%s,serial=%s,bootindex=1" % (name, name)]
|
|
|
|
def boot(self, img, extra_args=[]):
|
|
args = self._args + [
|
|
"-device", "VGA",
|
|
"-drive", "file=%s,if=none,id=drive0,cache=writeback" % img,
|
|
"-device", "virtio-blk,drive=drive0,bootindex=0"]
|
|
args += self._data_args + extra_args
|
|
logging.debug("QEMU args: %s", " ".join(args))
|
|
qemu_bin = os.environ.get("QEMU", "qemu-system-" + self.arch)
|
|
guest = QEMUMachine(binary=qemu_bin, args=args)
|
|
try:
|
|
guest.launch()
|
|
except:
|
|
logging.error("Failed to launch QEMU, command line:")
|
|
logging.error(" ".join([qemu_bin] + args))
|
|
logging.error("Log:")
|
|
logging.error(guest.get_log())
|
|
logging.error("QEMU version >= 2.10 is required")
|
|
raise
|
|
atexit.register(self.shutdown)
|
|
self._guest = guest
|
|
usernet_info = guest.qmp("human-monitor-command",
|
|
command_line="info usernet")
|
|
self.ssh_port = None
|
|
for l in usernet_info["return"].splitlines():
|
|
fields = l.split()
|
|
if "TCP[HOST_FORWARD]" in fields and "22" in fields:
|
|
self.ssh_port = l.split()[3]
|
|
if not self.ssh_port:
|
|
raise Exception("Cannot find ssh port from 'info usernet':\n%s" % \
|
|
usernet_info)
|
|
|
|
def wait_ssh(self, seconds=300):
|
|
starttime = datetime.datetime.now()
|
|
endtime = starttime + datetime.timedelta(seconds=seconds)
|
|
guest_up = False
|
|
while datetime.datetime.now() < endtime:
|
|
if self.ssh("exit 0") == 0:
|
|
guest_up = True
|
|
break
|
|
seconds = (endtime - datetime.datetime.now()).total_seconds()
|
|
logging.debug("%ds before timeout", seconds)
|
|
time.sleep(1)
|
|
if not guest_up:
|
|
raise Exception("Timeout while waiting for guest ssh")
|
|
|
|
def shutdown(self):
|
|
self._guest.shutdown()
|
|
|
|
def wait(self):
|
|
self._guest.wait()
|
|
|
|
def qmp(self, *args, **kwargs):
|
|
return self._guest.qmp(*args, **kwargs)
|
|
|
|
def parse_args(vm_name):
|
|
|
|
def get_default_jobs():
|
|
if kvm_available():
|
|
return multiprocessing.cpu_count() / 2
|
|
else:
|
|
return 1
|
|
|
|
parser = optparse.OptionParser(
|
|
description="VM test utility. Exit codes: "
|
|
"0 = success, "
|
|
"1 = command line error, "
|
|
"2 = environment initialization failed, "
|
|
"3 = test command failed")
|
|
parser.add_option("--debug", "-D", action="store_true",
|
|
help="enable debug output")
|
|
parser.add_option("--image", "-i", default="%s.img" % vm_name,
|
|
help="image file name")
|
|
parser.add_option("--force", "-f", action="store_true",
|
|
help="force build image even if image exists")
|
|
parser.add_option("--jobs", type=int, default=get_default_jobs(),
|
|
help="number of virtual CPUs")
|
|
parser.add_option("--verbose", "-V", action="store_true",
|
|
help="Pass V=1 to builds within the guest")
|
|
parser.add_option("--build-image", "-b", action="store_true",
|
|
help="build image")
|
|
parser.add_option("--build-qemu",
|
|
help="build QEMU from source in guest")
|
|
parser.add_option("--interactive", "-I", action="store_true",
|
|
help="Interactively run command")
|
|
parser.add_option("--snapshot", "-s", action="store_true",
|
|
help="run tests with a snapshot")
|
|
parser.disable_interspersed_args()
|
|
return parser.parse_args()
|
|
|
|
def main(vmcls):
|
|
try:
|
|
args, argv = parse_args(vmcls.name)
|
|
if not argv and not args.build_qemu and not args.build_image:
|
|
print("Nothing to do?")
|
|
return 1
|
|
logging.basicConfig(level=(logging.DEBUG if args.debug
|
|
else logging.WARN))
|
|
vm = vmcls(debug=args.debug, vcpus=args.jobs)
|
|
if args.build_image:
|
|
if os.path.exists(args.image) and not args.force:
|
|
sys.stderr.writelines(["Image file exists: %s\n" % args.image,
|
|
"Use --force option to overwrite\n"])
|
|
return 1
|
|
return vm.build_image(args.image)
|
|
if args.build_qemu:
|
|
vm.add_source_dir(args.build_qemu)
|
|
cmd = [vm.BUILD_SCRIPT.format(
|
|
configure_opts = " ".join(argv),
|
|
jobs=args.jobs,
|
|
verbose = "V=1" if args.verbose else "")]
|
|
else:
|
|
cmd = argv
|
|
img = args.image
|
|
if args.snapshot:
|
|
img += ",snapshot=on"
|
|
vm.boot(img)
|
|
vm.wait_ssh()
|
|
except Exception as e:
|
|
if isinstance(e, SystemExit) and e.code == 0:
|
|
return 0
|
|
sys.stderr.write("Failed to prepare guest environment\n")
|
|
traceback.print_exc()
|
|
return 2
|
|
|
|
if args.interactive:
|
|
if vm.ssh_interactive(*cmd) == 0:
|
|
return 0
|
|
vm.ssh_interactive()
|
|
return 3
|
|
else:
|
|
if vm.ssh(*cmd) != 0:
|
|
return 3
|