2017-09-05 04:11:53 +02:00
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#!/usr/bin/env python
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#
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# VM testing base class
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#
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2019-06-17 06:38:53 +02:00
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# Copyright 2017-2019 Red Hat Inc.
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2017-09-05 04:11:53 +02:00
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#
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# Authors:
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# Fam Zheng <famz@redhat.com>
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2019-06-17 06:38:53 +02:00
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# Gerd Hoffmann <kraxel@redhat.com>
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2017-09-05 04:11:53 +02:00
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#
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# This code is licensed under the GPL version 2 or later. See
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# the COPYING file in the top-level directory.
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#
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2018-06-08 14:29:43 +02:00
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from __future__ import print_function
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2017-09-05 04:11:53 +02:00
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import os
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2019-06-17 06:38:53 +02:00
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import re
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2017-09-05 04:11:53 +02:00
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import sys
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2019-06-17 06:38:53 +02:00
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import socket
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2017-09-05 04:11:53 +02:00
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import logging
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import time
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import datetime
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2019-02-06 17:29:01 +01:00
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sys.path.append(os.path.join(os.path.dirname(__file__), '..', '..', 'python'))
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2019-12-16 20:14:34 +01:00
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from qemu.accel import kvm_available
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2019-06-27 23:28:14 +02:00
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from qemu.machine import QEMUMachine
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2017-09-05 04:11:53 +02:00
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import subprocess
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import hashlib
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import optparse
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import atexit
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import tempfile
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import shutil
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import multiprocessing
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import traceback
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SSH_KEY = open(os.path.join(os.path.dirname(__file__),
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"..", "keys", "id_rsa")).read()
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SSH_PUB_KEY = open(os.path.join(os.path.dirname(__file__),
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"..", "keys", "id_rsa.pub")).read()
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class BaseVM(object):
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GUEST_USER = "qemu"
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GUEST_PASS = "qemupass"
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ROOT_PASS = "qemupass"
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2019-06-17 06:38:48 +02:00
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envvars = [
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"https_proxy",
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"http_proxy",
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"ftp_proxy",
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"no_proxy",
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]
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2017-09-05 04:11:53 +02:00
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# The script to run in the guest that builds QEMU
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BUILD_SCRIPT = ""
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# The guest name, to be overridden by subclasses
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name = "#base"
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2018-10-13 02:40:30 +02:00
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# The guest architecture, to be overridden by subclasses
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arch = "#arch"
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2019-06-17 06:38:51 +02:00
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# command to halt the guest, can be overridden by subclasses
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poweroff = "poweroff"
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2019-10-18 20:17:04 +02:00
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# enable IPv6 networking
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ipv6 = True
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2017-09-05 04:11:53 +02:00
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def __init__(self, debug=False, vcpus=None):
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self._guest = None
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self._tmpdir = os.path.realpath(tempfile.mkdtemp(prefix="vm-test-",
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suffix=".tmp",
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dir="."))
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atexit.register(shutil.rmtree, self._tmpdir)
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self._ssh_key_file = os.path.join(self._tmpdir, "id_rsa")
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open(self._ssh_key_file, "w").write(SSH_KEY)
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subprocess.check_call(["chmod", "600", self._ssh_key_file])
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self._ssh_pub_key_file = os.path.join(self._tmpdir, "id_rsa.pub")
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open(self._ssh_pub_key_file, "w").write(SSH_PUB_KEY)
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self.debug = debug
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self._stderr = sys.stderr
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self._devnull = open(os.devnull, "w")
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if self.debug:
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self._stdout = sys.stdout
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else:
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self._stdout = self._devnull
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self._args = [ \
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2018-08-03 10:52:29 +02:00
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"-nodefaults", "-m", "4G",
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2018-08-20 17:55:54 +02:00
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"-cpu", "max",
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2019-10-18 20:17:04 +02:00
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"-netdev", "user,id=vnet,hostfwd=:127.0.0.1:0-:22" +
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(",ipv6=no" if not self.ipv6 else ""),
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2017-09-05 04:11:53 +02:00
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"-device", "virtio-net-pci,netdev=vnet",
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2019-06-17 06:38:53 +02:00
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"-vnc", "127.0.0.1:0,to=20"]
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2018-10-13 02:40:28 +02:00
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if vcpus and vcpus > 1:
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2019-05-20 14:47:04 +02:00
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self._args += ["-smp", "%d" % vcpus]
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2018-10-13 02:40:32 +02:00
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if kvm_available(self.arch):
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2017-09-05 04:11:53 +02:00
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self._args += ["-enable-kvm"]
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else:
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logging.info("KVM not available, not using -enable-kvm")
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self._data_args = []
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2019-11-04 18:31:44 +01:00
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def _download_with_cache(self, url, sha256sum=None, sha512sum=None):
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2017-09-05 04:11:53 +02:00
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def check_sha256sum(fname):
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if not sha256sum:
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return True
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checksum = subprocess.check_output(["sha256sum", fname]).split()[0]
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2019-05-20 14:47:04 +02:00
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return sha256sum == checksum.decode("utf-8")
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2017-09-05 04:11:53 +02:00
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2019-11-04 18:31:44 +01:00
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def check_sha512sum(fname):
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if not sha512sum:
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return True
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checksum = subprocess.check_output(["sha512sum", fname]).split()[0]
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return sha512sum == checksum.decode("utf-8")
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2017-09-05 04:11:53 +02:00
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cache_dir = os.path.expanduser("~/.cache/qemu-vm/download")
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if not os.path.exists(cache_dir):
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os.makedirs(cache_dir)
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2019-05-20 14:47:04 +02:00
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fname = os.path.join(cache_dir,
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hashlib.sha1(url.encode("utf-8")).hexdigest())
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2019-11-04 18:31:44 +01:00
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if os.path.exists(fname) and check_sha256sum(fname) and check_sha512sum(fname):
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2017-09-05 04:11:53 +02:00
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return fname
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logging.debug("Downloading %s to %s...", url, fname)
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subprocess.check_call(["wget", "-c", url, "-O", fname + ".download"],
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stdout=self._stdout, stderr=self._stderr)
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os.rename(fname + ".download", fname)
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return fname
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2019-06-17 06:38:49 +02:00
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def _ssh_do(self, user, cmd, check):
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ssh_cmd = ["ssh", "-q", "-t",
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2017-09-05 04:11:53 +02:00
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"-o", "StrictHostKeyChecking=no",
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"-o", "UserKnownHostsFile=" + os.devnull,
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"-o", "ConnectTimeout=1",
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"-p", self.ssh_port, "-i", self._ssh_key_file]
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2019-06-17 06:38:48 +02:00
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for var in self.envvars:
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ssh_cmd += ['-o', "SendEnv=%s" % var ]
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2017-09-05 04:11:53 +02:00
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assert not isinstance(cmd, str)
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ssh_cmd += ["%s@127.0.0.1" % user] + list(cmd)
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logging.debug("ssh_cmd: %s", " ".join(ssh_cmd))
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2018-03-22 04:47:53 +01:00
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r = subprocess.call(ssh_cmd)
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2017-09-05 04:11:53 +02:00
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if check and r != 0:
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raise Exception("SSH command failed: %s" % cmd)
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return r
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def ssh(self, *cmd):
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return self._ssh_do(self.GUEST_USER, cmd, False)
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def ssh_root(self, *cmd):
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return self._ssh_do("root", cmd, False)
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def ssh_check(self, *cmd):
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self._ssh_do(self.GUEST_USER, cmd, True)
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def ssh_root_check(self, *cmd):
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self._ssh_do("root", cmd, True)
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def build_image(self, img):
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raise NotImplementedError
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2019-11-14 14:42:46 +01:00
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def exec_qemu_img(self, *args):
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cmd = [os.environ.get("QEMU_IMG", "qemu-img")]
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cmd.extend(list(args))
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subprocess.check_call(cmd)
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2017-09-05 04:11:53 +02:00
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def add_source_dir(self, src_dir):
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2019-05-20 14:47:04 +02:00
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name = "data-" + hashlib.sha1(src_dir.encode("utf-8")).hexdigest()[:5]
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2017-09-05 04:11:53 +02:00
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tarfile = os.path.join(self._tmpdir, name + ".tar")
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logging.debug("Creating archive %s for src_dir dir: %s", tarfile, src_dir)
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subprocess.check_call(["./scripts/archive-source.sh", tarfile],
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cwd=src_dir, stdin=self._devnull,
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stdout=self._stdout, stderr=self._stderr)
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self._data_args += ["-drive",
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"file=%s,if=none,id=%s,cache=writeback,format=raw" % \
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(tarfile, name),
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"-device",
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"virtio-blk,drive=%s,serial=%s,bootindex=1" % (name, name)]
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def boot(self, img, extra_args=[]):
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args = self._args + [
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"-device", "VGA",
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"-drive", "file=%s,if=none,id=drive0,cache=writeback" % img,
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"-device", "virtio-blk,drive=drive0,bootindex=0"]
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args += self._data_args + extra_args
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logging.debug("QEMU args: %s", " ".join(args))
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2018-10-13 02:40:30 +02:00
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qemu_bin = os.environ.get("QEMU", "qemu-system-" + self.arch)
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2017-09-05 04:11:53 +02:00
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guest = QEMUMachine(binary=qemu_bin, args=args)
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2019-06-17 06:38:53 +02:00
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guest.set_machine('pc')
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guest.set_console()
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2017-09-05 04:11:53 +02:00
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try:
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guest.launch()
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except:
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logging.error("Failed to launch QEMU, command line:")
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logging.error(" ".join([qemu_bin] + args))
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logging.error("Log:")
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logging.error(guest.get_log())
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logging.error("QEMU version >= 2.10 is required")
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raise
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atexit.register(self.shutdown)
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self._guest = guest
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usernet_info = guest.qmp("human-monitor-command",
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command_line="info usernet")
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self.ssh_port = None
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for l in usernet_info["return"].splitlines():
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fields = l.split()
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if "TCP[HOST_FORWARD]" in fields and "22" in fields:
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self.ssh_port = l.split()[3]
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if not self.ssh_port:
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raise Exception("Cannot find ssh port from 'info usernet':\n%s" % \
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usernet_info)
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2019-06-17 06:38:53 +02:00
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def console_init(self, timeout = 120):
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vm = self._guest
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vm.console_socket.settimeout(timeout)
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def console_log(self, text):
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for line in re.split("[\r\n]", text):
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# filter out terminal escape sequences
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line = re.sub("\x1b\[[0-9;?]*[a-zA-Z]", "", line)
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line = re.sub("\x1b\([0-9;?]*[a-zA-Z]", "", line)
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# replace unprintable chars
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line = re.sub("\x1b", "<esc>", line)
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line = re.sub("[\x00-\x1f]", ".", line)
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line = re.sub("[\x80-\xff]", ".", line)
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if line == "":
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continue
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# log console line
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sys.stderr.write("con recv: %s\n" % line)
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2019-06-17 06:38:57 +02:00
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def console_wait(self, expect, expectalt = None):
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2019-06-17 06:38:53 +02:00
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vm = self._guest
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output = ""
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while True:
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try:
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chars = vm.console_socket.recv(1)
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except socket.timeout:
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sys.stderr.write("console: *** read timeout ***\n")
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sys.stderr.write("console: waiting for: '%s'\n" % expect)
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2019-06-17 06:38:57 +02:00
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if not expectalt is None:
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sys.stderr.write("console: waiting for: '%s' (alt)\n" % expectalt)
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2019-06-17 06:38:53 +02:00
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sys.stderr.write("console: line buffer:\n")
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sys.stderr.write("\n")
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self.console_log(output.rstrip())
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sys.stderr.write("\n")
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raise
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output += chars.decode("latin1")
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if expect in output:
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break
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2019-06-17 06:38:57 +02:00
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if not expectalt is None and expectalt in output:
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break
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2019-06-17 06:38:53 +02:00
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if "\r" in output or "\n" in output:
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lines = re.split("[\r\n]", output)
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output = lines.pop()
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if self.debug:
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self.console_log("\n".join(lines))
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if self.debug:
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self.console_log(output)
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2019-06-17 06:38:57 +02:00
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if not expectalt is None and expectalt in output:
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return False
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return True
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2019-06-17 06:38:53 +02:00
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2019-10-31 09:53:04 +01:00
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def console_consume(self):
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vm = self._guest
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output = ""
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vm.console_socket.setblocking(0)
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while True:
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try:
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chars = vm.console_socket.recv(1)
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except:
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break
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output += chars.decode("latin1")
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if "\r" in output or "\n" in output:
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lines = re.split("[\r\n]", output)
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output = lines.pop()
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if self.debug:
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self.console_log("\n".join(lines))
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if self.debug:
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self.console_log(output)
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vm.console_socket.setblocking(1)
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2019-06-17 06:38:53 +02:00
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def console_send(self, command):
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vm = self._guest
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if self.debug:
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logline = re.sub("\n", "<enter>", command)
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logline = re.sub("[\x00-\x1f]", ".", logline)
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sys.stderr.write("con send: %s\n" % logline)
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for char in list(command):
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vm.console_socket.send(char.encode("utf-8"))
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time.sleep(0.01)
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def console_wait_send(self, wait, command):
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self.console_wait(wait)
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self.console_send(command)
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def console_ssh_init(self, prompt, user, pw):
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sshkey_cmd = "echo '%s' > .ssh/authorized_keys\n" % SSH_PUB_KEY.rstrip()
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self.console_wait_send("login:", "%s\n" % user)
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self.console_wait_send("Password:", "%s\n" % pw)
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self.console_wait_send(prompt, "mkdir .ssh\n")
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self.console_wait_send(prompt, sshkey_cmd)
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self.console_wait_send(prompt, "chmod 755 .ssh\n")
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self.console_wait_send(prompt, "chmod 644 .ssh/authorized_keys\n")
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def console_sshd_config(self, prompt):
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self.console_wait(prompt)
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self.console_send("echo 'PermitRootLogin yes' >> /etc/ssh/sshd_config\n")
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for var in self.envvars:
|
|
|
|
self.console_wait(prompt)
|
|
|
|
self.console_send("echo 'AcceptEnv %s' >> /etc/ssh/sshd_config\n" % var)
|
|
|
|
|
|
|
|
def print_step(self, text):
|
|
|
|
sys.stderr.write("### %s ...\n" % text)
|
|
|
|
|
2018-08-23 13:21:53 +02:00
|
|
|
def wait_ssh(self, seconds=300):
|
2017-09-05 04:11:53 +02:00
|
|
|
starttime = datetime.datetime.now()
|
2018-10-13 02:40:29 +02:00
|
|
|
endtime = starttime + datetime.timedelta(seconds=seconds)
|
2017-09-05 04:11:53 +02:00
|
|
|
guest_up = False
|
2018-10-13 02:40:29 +02:00
|
|
|
while datetime.datetime.now() < endtime:
|
2017-09-05 04:11:53 +02:00
|
|
|
if self.ssh("exit 0") == 0:
|
|
|
|
guest_up = True
|
|
|
|
break
|
2018-10-13 02:40:29 +02:00
|
|
|
seconds = (endtime - datetime.datetime.now()).total_seconds()
|
|
|
|
logging.debug("%ds before timeout", seconds)
|
2017-09-05 04:11:53 +02:00
|
|
|
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()
|
|
|
|
|
2019-06-17 06:38:51 +02:00
|
|
|
def graceful_shutdown(self):
|
|
|
|
self.ssh_root(self.poweroff)
|
|
|
|
self._guest.wait()
|
|
|
|
|
2017-09-05 04:11:53 +02:00
|
|
|
def qmp(self, *args, **kwargs):
|
|
|
|
return self._guest.qmp(*args, **kwargs)
|
|
|
|
|
2018-10-13 02:40:33 +02:00
|
|
|
def parse_args(vmcls):
|
2018-10-13 02:40:27 +02:00
|
|
|
|
|
|
|
def get_default_jobs():
|
2018-10-13 02:40:33 +02:00
|
|
|
if kvm_available(vmcls.arch):
|
2019-03-29 22:08:01 +01:00
|
|
|
return multiprocessing.cpu_count() // 2
|
2018-10-13 02:40:27 +02:00
|
|
|
else:
|
|
|
|
return 1
|
|
|
|
|
2017-09-05 04:11:53 +02:00
|
|
|
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")
|
2018-10-13 02:40:33 +02:00
|
|
|
parser.add_option("--image", "-i", default="%s.img" % vmcls.name,
|
2017-09-05 04:11:53 +02:00
|
|
|
help="image file name")
|
|
|
|
parser.add_option("--force", "-f", action="store_true",
|
|
|
|
help="force build image even if image exists")
|
2018-10-13 02:40:27 +02:00
|
|
|
parser.add_option("--jobs", type=int, default=get_default_jobs(),
|
2017-09-05 04:11:53 +02:00
|
|
|
help="number of virtual CPUs")
|
2018-08-03 10:52:28 +02:00
|
|
|
parser.add_option("--verbose", "-V", action="store_true",
|
|
|
|
help="Pass V=1 to builds within the guest")
|
2017-09-05 04:11:53 +02:00
|
|
|
parser.add_option("--build-image", "-b", action="store_true",
|
|
|
|
help="build image")
|
|
|
|
parser.add_option("--build-qemu",
|
|
|
|
help="build QEMU from source in guest")
|
2019-01-21 17:48:15 +01:00
|
|
|
parser.add_option("--build-target",
|
|
|
|
help="QEMU build target", default="check")
|
2017-09-05 04:11:53 +02:00
|
|
|
parser.add_option("--interactive", "-I", action="store_true",
|
|
|
|
help="Interactively run command")
|
2018-07-12 03:28:26 +02:00
|
|
|
parser.add_option("--snapshot", "-s", action="store_true",
|
|
|
|
help="run tests with a snapshot")
|
2017-09-05 04:11:53 +02:00
|
|
|
parser.disable_interspersed_args()
|
|
|
|
return parser.parse_args()
|
|
|
|
|
|
|
|
def main(vmcls):
|
|
|
|
try:
|
2018-10-13 02:40:33 +02:00
|
|
|
args, argv = parse_args(vmcls)
|
2017-09-05 04:11:53 +02:00
|
|
|
if not argv and not args.build_qemu and not args.build_image:
|
2018-06-08 14:29:43 +02:00
|
|
|
print("Nothing to do?")
|
2017-09-05 04:11:53 +02:00
|
|
|
return 1
|
2017-09-27 15:03:37 +02:00
|
|
|
logging.basicConfig(level=(logging.DEBUG if args.debug
|
|
|
|
else logging.WARN))
|
2017-09-05 04:11:53 +02:00
|
|
|
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),
|
2019-05-20 14:47:04 +02:00
|
|
|
jobs=int(args.jobs),
|
2019-01-21 17:48:15 +01:00
|
|
|
target=args.build_target,
|
2018-08-03 10:52:28 +02:00
|
|
|
verbose = "V=1" if args.verbose else "")]
|
2017-09-05 04:11:53 +02:00
|
|
|
else:
|
|
|
|
cmd = argv
|
2018-07-12 03:28:26 +02:00
|
|
|
img = args.image
|
|
|
|
if args.snapshot:
|
|
|
|
img += ",snapshot=on"
|
|
|
|
vm.boot(img)
|
2017-09-05 04:11:53 +02:00
|
|
|
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
|
|
|
|
|
2019-06-17 06:38:51 +02:00
|
|
|
exitcode = 0
|
|
|
|
if vm.ssh(*cmd) != 0:
|
|
|
|
exitcode = 3
|
2019-11-12 16:08:15 +01:00
|
|
|
if args.interactive:
|
2019-06-17 06:38:49 +02:00
|
|
|
vm.ssh()
|
2019-06-17 06:38:51 +02:00
|
|
|
|
|
|
|
if not args.snapshot:
|
|
|
|
vm.graceful_shutdown()
|
|
|
|
|
|
|
|
return exitcode
|