This is the common code to implement a "VM test" to
1) Download and initialize a pre-defined VM that has necessary
dependencies to build QEMU and SSH access.
2) Archive $SRC_PATH to a .tar file.
3) Boot the VM, and pass the source tar file to the guest.
4) SSH into the VM, untar the source tarball, build from the source.
Signed-off-by: Fam Zheng <f...@redhat.com>
---
tests/vm/basevm.py | 262 +++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 262 insertions(+)
create mode 100755 tests/vm/basevm.py
diff --git a/tests/vm/basevm.py b/tests/vm/basevm.py
new file mode 100755
index 0000000000..ad5663fb8e
--- /dev/null
+++ b/tests/vm/basevm.py
@@ -0,0 +1,262 @@
+#!/usr/bin/env python
+#
+# VM testing base class
+#
+# Copyright (C) 2017 Red Hat Inc.
+#
+# Authors:
+# Fam Zheng <f...@redhat.com>
+#
+# This work is licensed under the terms of the GNU GPL, version 2. See
+# the COPYING file in the top-level directory.
+#
+
+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
+import subprocess
+import hashlib
+import argparse
+import atexit
+import tempfile
+import shutil
+
+SSH_KEY = """\
+-----BEGIN RSA PRIVATE KEY-----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+-----END RSA PRIVATE KEY-----
+"""
+SSH_PUB_KEY = """\
+ssh-rsa
AAAAB3NzaC1yc2EAAAADAQABAAABAQCikC46WYtXotUd0UGPz9547Aj0KqC4gk+nt4BBJm86IHgCD9FygSGX9EFutXlhz9KZIPg9Okk7+IzXRHCWI2MNvhrcjyrezKREm71z08j9iwfxY3340fY2Mo+0khwpO7bzsgzkljHIHqcOg7MgttPInVMNH/EfqpgR8EDKJuWCB2Ny+EBFN/3dAiff0X/EvKle9PUrY70EkSycnyURS8HZReEqj8lN9J5kXzA8F6jBo/0Q42Ttv6e4k5YcaDrwmLrBWLra2PCXZLNyHqXEiFkGmdXtA1Eox9gc/p4jIXim6xrPNmpN6WyrrEjaCF5xYvNv8wXkD6uSWwbHYU24lIAn
qemu-vm-key
+"""
+
+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"
+ def __init__(self, debug=False):
+ self._guest = None
+ self._tmpdir = tempfile.mkdtemp(prefix="qemu-vm-")
+ 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("/dev/null", "w")
+ if self.debug:
+ self._stdout = sys.stdout
+ else:
+ self._stdout = self._devnull
+ self._args = [ \
+ "-nodefaults", "-enable-kvm", "-m", "2G",
+ "-smp", os.environ.get("J", "4"), "-cpu", "host",
+ "-netdev", "user,id=vnet,hostfwd=:0.0.0.0:0-:22",
+ "-device", "virtio-net-pci,netdev=vnet",
+ "-vnc", ":0,to=20",
+ "-serial", "file:%s" % os.path.join(self._tmpdir, "serial.out")]
+
+ 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=/dev/null",
+ "-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,
+ stdin=sys.stdin if interactive else self._devnull,
+ stdout=sys.stdout if interactive else self._stdout,
+ stderr=sys.stderr if interactive else self._stderr)
+ 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, data_dir):
+ name = "data-" + hashlib.sha1(data_dir).hexdigest()[:5]
+ tarfile = os.path.join(self._tmpdir, name + ".tar")
+ logging.debug("Creating archive %s for data dir: %s", tarfile,
data_dir)
+ subprocess.check_call(["tar", "--exclude-vcs",
+ "--exclude=tests/vm/*.img",
+ "--exclude=tests/vm/*.img.*",
+ "--exclude=*.d",
+ "--exclude=*.o",
+ "--exclude=docker-src.*",
+ "-cf", tarfile, '.'], cwd=data_dir,
+ stdin=self._devnull, stdout=self._stdout)
+ 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 + [
+ "-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))
+ guest = QEMUMachine(binary=os.environ.get("QEMU",
"qemu-system-x86_64"),
+ args=args)
+ guest._vga = "std"
+ guest.launch()
+ 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=120):
+ guest_remote = self.GUEST_USER + "@127.0.0.1"
+ starttime = datetime.datetime.now()
+ guest_up = False
+ while (datetime.datetime.now() - starttime).total_seconds() < seconds:
+ if self.ssh("exit 0") == 0:
+ guest_up = True
+ break
+ time.sleep(1)
+ if not guest_up:
+ logging.error("Timeout while waiting for guest to boot up")
+ return 2
+
+ 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):
+ parser = argparse.ArgumentParser()
+ parser.add_argument("--debug", "-D", action="store_true",
+ help="enable debug output")
+ parser.add_argument("--image", "-i", default="%s.img" % vm_name,
+ help="image file name")
+ parser.add_argument("--force", "-f", action="store_true",
+ help="force build image even if image exists")
+ parser.add_argument("--build-image", "-b", action="store_true",
+ help="build image")
+ parser.add_argument("--build-qemu",
+ help="build QEMU from source in guest")
+ parser.add_argument("--interactive", "-I", action="store_true",
+ help="Interactively run command")
+ return parser.parse_known_args()
+
+def main(vmcls):
+ args, argv = parse_args(vmcls.name)
+ if not argv and not args.build_qemu:
+ print "Nothing to do?"
+ return 1
+ if args.debug:
+ logging.getLogger().setLevel(logging.DEBUG)
+ vm = vmcls(debug=args.debug)
+ if args.build_image:
+ if os.path.exists(args.image) and not args.force:
+ sys.stderr.writelines(["Image file exists: %s\n" % img,
+ "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=os.environ.get("J", "4"))]
+ else:
+ cmd = argv
+ vm.boot(args.image + ",snapshot=on")
+ vm.wait_ssh()
+ if args.interactive:
+ if vm.ssh_interactive(*cmd) == 0:
+ return 0
+ vm.ssh_interactive()
+ else:
+ return vm.ssh(*cmd)
--
2.13.4
