Synnefo

#!/usr/bin/env python

# Copyright 2011 GRNET S.A. All rights reserved.

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#   1. Redistributions of source code must retain the above

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"""Perform integration testing on a running Synnefo deployment"""

import datetime

import inspect

import logging

import os

import paramiko

import subprocess

import socket

import struct

import sys

import time

from IPy import IP

from random import choice

from kamaki.client import Client, ClientError

from vncauthproxy.d3des import generate_response as d3des_generate_response

# Use backported unittest functionality if Python < 2.7

try:

    import unittest2 as unittest

except ImportError:

    if sys.version_info < (2, 7):

        raise Exception("The unittest2 package is required for Python < 2.7")

    import unittest

API = "http://dev67.dev.grnet.gr:8000/api/v1.1"

TOKEN = "46e427d657b20defe352804f0eb6f8a2"

# A unique id identifying this test run

UNIQUE_RUN_ID = datetime.datetime.strftime(datetime.datetime.now(),

                                           "%Y%m%d%H%M%S")

SNF_TEST_PREFIX = "snf-test"

# Setup logging (FIXME - verigak)

logging.basicConfig(format="%(message)s")

log = logging.getLogger("snf-test")

log.setLevel(logging.INFO)

class UnauthorizedTestCase(unittest.TestCase):

    def test_unauthorized_access(self):

        """Test access without a valid token fails"""

        c = Client(API, "123")

        with self.assertRaises(ClientError) as cm:

            c.list_servers()

        self.assertEqual(cm.exception.status, 401)

class ImagesTestCase(unittest.TestCase):

    """Test image lists for consistency"""

    @classmethod

    def setUpClass(cls):

        """Initialize kamaki, get (detailed) list of images"""

        log.info("Getting simple and detailed list of images")

        cls.client = Client(API, TOKEN)

        cls.images = cls.client.list_images()

        cls.dimages = cls.client.list_images(detail=True)

    def test_001_list_images(self):

        """Test image list actually returns images"""

        self.assertGreater(len(self.images), 0)

    def test_002_list_images_detailed(self):

        """Test detailed image list is the same length as list"""

        self.assertEqual(len(self.dimages), len(self.images))

    def test_003_same_image_names(self):

        """Test detailed and simple image list contain same names"""

        names = sorted(map(lambda x: x["name"], self.images))

        dnames = sorted(map(lambda x: x["name"], self.dimages))

        self.assertEqual(names, dnames)

    def test_004_unique_image_names(self):

        """Test images have unique names"""

        names = sorted(map(lambda x: x["name"], self.images))

        self.assertEqual(sorted(list(set(names))), names)

    def test_005_image_metadata(self):

        """Test every image has specific metadata defined"""

        keys = frozenset(["OS", "description", "size"])

        for i in self.dimages:

            self.assertTrue(keys.issubset(i["metadata"]["values"].keys()))

class FlavorsTestCase(unittest.TestCase):

    """Test flavor lists for consistency"""

    @classmethod

    def setUpClass(cls):

        """Initialize kamaki, get (detailed) list of flavors"""

        log.info("Getting simple and detailed list of flavors")

        cls.client = Client(API, TOKEN)

        cls.flavors = cls.client.list_flavors()

        cls.dflavors = cls.client.list_flavors(detail=True)

    def test_001_list_flavors(self):

        """Test flavor list actually returns flavors"""

        self.assertGreater(len(self.flavors), 0)

    def test_002_list_flavors_detailed(self):

        """Test detailed flavor list is the same length as list"""

        self.assertEquals(len(self.dflavors), len(self.flavors))

    def test_003_same_flavor_names(self):

        """Test detailed and simple flavor list contain same names"""

        names = sorted(map(lambda x: x["name"], self.flavors))

        dnames = sorted(map(lambda x: x["name"], self.dflavors))

        self.assertEqual(names, dnames)

    def test_004_unique_flavor_names(self):

        """Test flavors have unique names"""

        names = sorted(map(lambda x: x["name"], self.flavors))

        self.assertEqual(sorted(list(set(names))), names)

    def test_005_well_formed_flavor_names(self):

        """Test flavors have names of the form CxxRyyDzz

        Where xx is vCPU count, yy is RAM in MiB, zz is Disk in GiB

        """

        for f in self.dflavors:

            self.assertEqual("C%dR%dD%d" % (f["cpu"], f["ram"], f["disk"]),

                             f["name"],

                             "Flavor %s does not match its specs." % f["name"])

class ServersTestCase(unittest.TestCase):

    """Test server lists for consistency"""

    @classmethod

    def setUpClass(cls):

        """Initialize kamaki, get (detailed) list of servers"""

        log.info("Getting simple and detailed list of servers")

        cls.client = Client(API, TOKEN)

        cls.servers = cls.client.list_servers()

        cls.dservers = cls.client.list_servers(detail=True)

    def test_001_list_servers(self):

        """Test server list actually returns servers"""

        self.assertGreater(len(self.servers), 0)

    def test_002_list_servers_detailed(self):

        """Test detailed server list is the same length as list"""

        self.assertEqual(len(self.dservers), len(self.servers))

    def test_003_same_server_names(self):

        """Test detailed and simple flavor list contain same names"""

        names = sorted(map(lambda x: x["name"], self.servers))

        dnames = sorted(map(lambda x: x["name"], self.dservers))

        self.assertEqual(names, dnames)

# This class gets replicated into actual TestCases dynamically

class SpawnServerTestCase(unittest.TestCase):

    """Test scenario for server of the specified image"""

    @classmethod

    def setUpClass(cls):

        """Initialize a kamaki instance"""

        log.info("Spawning server for image `%s'", cls.imagename)

        cls.client = Client(API, TOKEN)

    def _get_ipv4(self, server):

        """Get the public IPv4 of a server from the detailed server info"""

        public_addrs = filter(lambda x: x["id"] == "public",

                              server["addresses"]["values"])

        self.assertEqual(len(public_addrs), 1)

        ipv4_addrs = filter(lambda x: x["version"] == 4,

                            public_addrs[0]["values"])

        self.assertEqual(len(ipv4_addrs), 1)

        return ipv4_addrs[0]["addr"]

    def _get_ipv6(self, server):

        """Get the public IPv6 of a server from the detailed server info"""

        public_addrs = filter(lambda x: x["id"] == "public",

                              server["addresses"]["values"])

        self.assertEqual(len(public_addrs), 1)

        ipv6_addrs = filter(lambda x: x["version"] == 6,

                            public_addrs[0]["values"])

        self.assertEqual(len(ipv6_addrs), 1)

        return ipv6_addrs[0]["addr"]

    def _connect_loginname(self, os):

        """Return the login name for connections based on the server OS"""

        if os in ('ubuntu', 'kubuntu', 'fedora'):

            return 'user'

        elif os == 'windows':

            return 'Administrator'

        else:

            return 'root'

    def _verify_server_status(self, current_status, new_status):

        """Verify a server has switched to a specified status"""

        log.info("Getting status for server %d, Image %s",

                 self.serverid, self.imagename)

        server = self.client.get_server_details(self.serverid)

        self.assertIn(server["status"], (current_status, new_status))

        self.assertEquals(server["status"], new_status)

    def _get_connected_tcp_socket(self, family, host, port):

        """Get a connected socket from the specified family to host:port"""

        sock = None

        for res in \

            socket.getaddrinfo(host, port, family, socket.SOCK_STREAM, 0,

                               socket.AI_PASSIVE):

            af, socktype, proto, canonname, sa = res

            try:

                sock = socket.socket(af, socktype, proto)

            except socket.error as msg:

                sock = None

                continue

            try:

                sock.connect(sa)

            except socket.error as msg:

                sock.close()

                sock = None

                continue

        self.assertIsNotNone(sock)

        return sock

    def _ping_once(self, ipv6, ip):

        """Test server responds to a single IPv4 or IPv6 ping"""

        log.info("PING IPv%s to %s", "6" if ipv6 else "4", ip)

        cmd = "ping%s -c 2 -w 3 %s" % ("6" if ipv6 else "", ip)

        ping = subprocess.Popen(cmd, shell=True,

                                stdout=subprocess.PIPE, stderr=subprocess.PIPE)

        (stdout, stderr) = ping.communicate()

        ret = ping.wait()

        self.assertEquals(ret, 0)

    def _get_hostname_over_ssh(self, hostip, username, password):

        ssh = paramiko.SSHClient()

        ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())

        try:

            ssh.connect(hostip, username=username, password=password)

        except socket.error:

            raise AssertionError

        stdin, stdout, stderr = ssh.exec_command("hostname")

        lines = stdout.readlines()

        self.assertEqual(len(lines), 1)

        return lines

    def _try_until_timeout_expires(self, warn_timeout, fail_timeout,

                                   opmsg, callable, *args, **kwargs):

        if warn_timeout == fail_timeout:

            warn_timeout = fail_timeout + 1

        warn_tmout = time.time() + warn_timeout

        fail_tmout = time.time() + fail_timeout

        while True:

            if time.time() > warn_tmout:

                log.warning("Server %d: %s operation '%s' not done yet",

                            opmsg, self.serverid, self.servername)

            try:

                return callable(*args, **kwargs)

            except AssertionError:

                pass

            self.assertLess(time.time(), fail_tmout,

                            "operation '%s' timed out" % opmsg)

            time.sleep(self.query_interval)

    def _insist_on_tcp_connection(self, family, host, port):

        familystr = {socket.AF_INET: 'IPv4', socket.AF_INET6: 'IPv6'}

        msg = "connect over %s to %s:%s" % \

              (familystr.get(family, "Unknown"), host, port)

        sock = self._try_until_timeout_expires(

                self.action_timeout, self.action_timeout,

                msg, self._get_connected_tcp_socket,

                family, host, port)

        return sock

    def _insist_on_status_transition(self, current_status, new_status,

                                    fail_timeout, warn_timeout=None):

        msg = "status transition %s -> %s" % (current_status, new_status)

        if warn_timeout is None:

            warn_timeout = fail_timeout

        self._try_until_timeout_expires(warn_timeout, fail_timeout,

                                        msg, self._verify_server_status,

                                        current_status, new_status)

    def _insist_on_ssh_hostname(self, hostip, username, password):

        msg = "ssh to %s, as %s/%s" % (hostip, username, password)

        hostname = self._try_until_timeout_expires(

                self.action_timeout, self.action_timeout,

                msg, self._get_hostname_over_ssh,

                hostip, username, password)

        # The hostname must be of the form 'prefix-id'

        self.assertTrue(hostname.endswith("-%d\n" % self.serverid))

    def _skipIf(self, condition, msg):

        if condition:

            self.skipTest(msg)

    def test_001_submit_create_server(self):

        """Test submit create server request"""

        server = self.client.create_server(self.servername, self.flavorid,

                                           self.imageid, self.personality)

        self.assertEqual(server["name"], self.servername)

        self.assertEqual(server["flavorRef"], self.flavorid)

        self.assertEqual(server["imageRef"], self.imageid)

        self.assertEqual(server["status"], "BUILD")

        # Update class attributes to reflect data on building server

        cls = type(self)

        cls.serverid = server["id"]

        cls.username = None

        cls.passwd = server["adminPass"]

    def test_002a_server_is_building_in_list(self):

        """Test server is in BUILD state, in server list"""

        servers = self.client.list_servers(detail=True)

        servers = filter(lambda x: x["name"] == self.servername, servers)

        self.assertEqual(len(servers), 1)

        server = servers[0]

        self.assertEqual(server["name"], self.servername)

        self.assertEqual(server["flavorRef"], self.flavorid)

        self.assertEqual(server["imageRef"], self.imageid)

        self.assertEqual(server["status"], "BUILD")

    def test_002b_server_is_building_in_details(self):

        """Test server is in BUILD state, in details"""

        server = self.client.get_server_details(self.serverid)

        self.assertEqual(server["name"], self.servername)

        self.assertEqual(server["flavorRef"], self.flavorid)

        self.assertEqual(server["imageRef"], self.imageid)

        self.assertEqual(server["status"], "BUILD")

    def test_002c_set_server_metadata(self):

        image = self.client.get_image_details(self.imageid)

        os = image["metadata"]["values"]["OS"]

        loginname = image["metadata"]["values"].get("loginname", None)

        self.client.update_server_metadata(self.serverid, OS=os)

        # Determine the username to use for future connections

        # to this host

        cls = type(self)

        cls.username = loginname

        if not cls.username:

            cls.username = self._connect_loginname(os)

        self.assertIsNotNone(cls.username)

    def test_002d_verify_server_metadata(self):

        """Test server metadata keys are set based on image metadata"""

        servermeta = self.client.get_server_metadata(self.serverid)

        imagemeta = self.client.get_image_metadata(self.imageid)

        self.assertEqual(servermeta["OS"], imagemeta["OS"])

    def test_003_server_becomes_active(self):

        """Test server becomes ACTIVE"""

        self._insist_on_status_transition("BUILD", "ACTIVE",

                                         self.build_fail, self.build_warning)

    def test_003a_get_server_oob_console(self):

        """Test getting OOB server console over VNC

        Implementation of RFB protocol follows

        http://www.realvnc.com/docs/rfbproto.pdf.

        """

        console = self.client.get_server_console(self.serverid)

        self.assertEquals(console['type'], "vnc")

        sock = self._insist_on_tcp_connection(socket.AF_UNSPEC,

                                        console["host"], console["port"])

        # Step 1. ProtocolVersion message (par. 6.1.1)

        version = sock.recv(1024)

        self.assertEquals(version, 'RFB 003.008\n')

        sock.send(version)

        # Step 2. Security (par 6.1.2): Only VNC Authentication supported

        sec = sock.recv(1024)

        self.assertEquals(list(sec), ['\x01', '\x02'])

        # Step 3. Request VNC Authentication (par 6.1.2)

        sock.send('\x02')

        # Step 4. Receive Challenge (par 6.2.2)

        challenge = sock.recv(1024)

        self.assertEquals(len(challenge), 16)

        # Step 5. DES-Encrypt challenge, use password as key (par 6.2.2)

        response = d3des_generate_response(

            (console["password"] + '\0' * 8)[:8], challenge)

        sock.send(response)

        # Step 6. SecurityResult (par 6.1.3)

        result = sock.recv(4)

        self.assertEquals(list(result), ['\x00', '\x00', '\x00', '\x00'])

        sock.close()

    def test_004_server_has_ipv4(self):

        """Test active server has a valid IPv4 address"""

        server = self.client.get_server_details(self.serverid)

        ipv4 = self._get_ipv4(server)

        self.assertEquals(IP(ipv4).version(), 4)

    def test_005_server_has_ipv6(self):

        """Test active server has a valid IPv6 address"""

        server = self.client.get_server_details(self.serverid)

        ipv6 = self._get_ipv6(server)

        self.assertEquals(IP(ipv6).version(), 6)

    def test_006_server_responds_to_ping_IPv4(self):

        """Test server responds to ping on IPv4 address"""

        server = self.client.get_server_details(self.serverid)

        ip = self._get_ipv4(server)

        self._try_until_timeout_expires(self.action_timeout,

                                        self.action_timeout,

                                        "PING IPv4", self._ping_once,

                                        False, ip)

    def test_007_server_responds_to_ping_IPv6(self):

        """Test server responds to ping on IPv6 address"""

        server = self.client.get_server_details(self.serverid)

        ip = self._get_ipv6(server)

        self._try_until_timeout_expires(self.action_timeout,

                                        self.action_timeout,

                                        "PING IPv6", self._ping_once,

                                        True, ip)

    def test_008_submit_shutdown_request(self):

        """Test submit request to shutdown server"""

        self.client.shutdown_server(self.serverid)

    def test_009_server_becomes_stopped(self):

        """Test server becomes STOPPED"""

        self._insist_on_status_transition("ACTIVE", "STOPPED",

                                         self.action_timeout,

                                         self.action_timeout)

    def test_010_submit_start_request(self):

        """Test submit start server request"""

        self.client.start_server(self.serverid)

    def test_011_server_becomes_active(self):

        """Test server becomes ACTIVE again"""

        self._insist_on_status_transition("STOPPED", "ACTIVE",

                                         self.action_timeout,

                                         self.action_timeout)

    def test_011a_server_responds_to_ping_IPv4(self):

        """Test server OS is actually up and running again"""

        self.test_006_server_responds_to_ping_IPv4()

    def test_012_ssh_to_server_IPv4(self):

        """Test SSH to server public IPv4 works, verify hostname"""

        self._skipIf(self.is_windows, "only valid for Linux servers")

        server = self.client.get_server_details(self.serverid)

        self._insist_on_ssh_hostname(self._get_ipv4(server),

                                     self.username, self.passwd)

    def test_013_ssh_to_server_IPv6(self):

        """Test SSH to server public IPv6 works, verify hostname"""

        self._skipIf(self.is_windows, "only valid for Linux servers")

        server = self.client.get_server_details(self.serverid)

        self._insist_on_ssh_hostname(self._get_ipv6(server),

                                     self.username, self.passwd)

    def test_014_rdp_to_server_IPv4(self):

        "Test RDP connection to server public IPv4 works"""

        self._skipIf(not self.is_windows, "only valid for Windows servers")

        server = self.client.get_server_details(self.serverid)

        ipv4 = self._get_ipv4(server)

        sock = _insist_on_tcp_connection(socket.AF_INET, ipv4, 3389)

        # No actual RDP processing done. We assume the RDP server is there

        # if the connection to the RDP port is successful.

        sock.close()

    def test_015_rdp_to_server_IPv6(self):

        "Test RDP connection to server public IPv6 works"""

        self._skipIf(not self.is_windows, "only valid for Windows servers")

        server = self.client.get_server_details(self.serverid)

        ipv6 = self._get_ipv6(server)

        sock = _get_tcp_connection(socket.AF_INET6, ipv6, 3389)

        # No actual RDP processing done. We assume the RDP server is there

        # if the connection to the RDP port is successful.

        sock.close()

    def test_016_personality_is_enforced(self):

        """Test file injection for personality enforcement"""

        self._skipIf(self.is_windows, "only implemented for Linux servers")

        self.assertTrue(False, "test not implemented, will fail")

def _spawn_server_test_case(**kwargs):

    """Construct a new unit test case class from SpawnServerTestCase"""

    name = "SpawnServerTestCase_%s" % kwargs["imagename"].replace(" ", "_")

    cls = type(name, (SpawnServerTestCase,), kwargs)

    # Patch extra parameters into test names by manipulating method docstrings

    for (mname, m) in \

        inspect.getmembers(cls, lambda x: inspect.ismethod(x)):

            if hasattr(m, __doc__):

                m.__func__.__doc__ = "[%s] %s" % (imagename, m.__doc__)

    return cls

def cleanup_servers(delete_stale=False):

    c = Client(API, TOKEN)

    servers = c.list_servers()

    stale = [s for s in servers if s["name"].startswith(SNF_TEST_PREFIX)]

    print >> sys.stderr, "Found these stale servers from previous runs:"

    print "    " + \

          "\n    ".join(["%d: %s" % (s['id'], s['name']) for s in stale])

    if delete_stale:

        print >> sys.stderr, "Deleting %d stale servers:" % len(stale)

        for server in stale:

            c.delete_server(server['id'])

        print >> sys.stderr, "    ...done"

    else:

        print >> sys.stderr, "Use --delete-stale to delete them."

def parse_arguments(args):

    from optparse import OptionParser

    kw = {}

    kw["usage"] = "%prog [options]"

    kw["description"] = \

        "%prog runs a number of test scenarios on a " \

        "Synnefo deployment."

    parser = OptionParser(**kw)

    parser.disable_interspersed_args()

    parser.add_option("--failfast",

                      action="store_true", dest="failfast",

                      help="Fail immediately if one of the tests fails",

                      default=False)

    parser.add_option("--action-timeout",

                      action="store", type="int", dest="action_timeout",

                      metavar="TIMEOUT",

                      help="Wait SECONDS seconds for a server action to " \

                           "complete, then the test is considered failed",

                      default=20)

    parser.add_option("--build-warning",

                      action="store", type="int", dest="build_warning",

                      metavar="TIMEOUT",

                      help="Warn if TIMEOUT seconds have passed and a " \

                           "build operation is still pending",

                      default=600)

    parser.add_option("--build-fail",

                      action="store", type="int", dest="build_fail",

                      metavar="BUILD_TIMEOUT",

                      help="Fail the test if TIMEOUT seconds have passed " \

                           "and a build operation is still incomplete",

                      default=900)

    parser.add_option("--query-interval",

                      action="store", type="int", dest="query_interval",

                      metavar="INTERVAL",

                      help="Query server status when requests are pending " \

                           "every INTERVAL seconds",

                      default=3)

    parser.add_option("--build-fanout",

                      action="store", type="int", dest="build_fanout",

                      metavar="COUNT",

                      help="Test COUNT images in parallel, by submitting " \

                           "COUNT server build requests simultaneously",

                      default=1)

    parser.add_option("--force-flavor",

                      action="store", type="int", dest="force_flavorid",

                      metavar="FLAVOR ID",

                      help="Force all server creations to use the specified "\

                           "FLAVOR ID instead of a randomly chosen one, " \

                           "useful if disk space is scarce",

                      default=None)    # FIXME

    parser.add_option("--show-stale",

                      action="store_true", dest="show_stale",

                      help="Show stale servers from previous runs, whose "\

                           "name starts with '%s'" % SNF_TEST_PREFIX,

                      default=False)

    parser.add_option("--delete-stale",

                      action="store_true", dest="delete_stale",

                      help="Delete stale servers from previous runs, whose "\

                           "name starts with '%s'" % SNF_TEST_PREFIX,

                      default=False)

    # FIXME: Change the default for build-fanout to 10

    # FIXME: Allow the user to specify a specific set of Images to test

    (opts, args) = parser.parse_args(args)

    # Verify arguments

    if opts.delete_stale:

        opts.show_stale = True

    return (opts, args)

def main():

    """Assemble test cases into a test suite, and run it

    IMPORTANT: Tests have dependencies and have to be run in the specified

    order inside a single test case. They communicate through attributes of the

    corresponding TestCase class (shared fixtures). TestCase classes for

    distinct Images may be run in parallel.

    """

    (opts, args) = parse_arguments(sys.argv[1:])

    # Cleanup stale servers from previous runs

    if opts.show_stale:

        cleanup_servers(delete_stale=opts.delete_stale)

        return 0

    # Initialize a kamaki instance, get flavors, images

    c = Client(API, TOKEN)

    DIMAGES = c.list_images(detail=True)

    DFLAVORS = c.list_flavors(detail=True)

    #

    # Assemble all test cases

    #

    # Initial test cases

    cases = [UnauthorizedTestCase, FlavorsTestCase, ImagesTestCase]

    # Image test cases

    imageid = 1

    flavorid = opts.force_flavorid if opts.force_flavorid \

               else choice(filter(lambda x: x["disk"] >= 20, DFLAVORS))["id"]

    imagename = "Debian Base"

    personality = None

    servername = "%s-%s for %s" % (SNF_TEST_PREFIX, UNIQUE_RUN_ID, imagename)

    is_windows = imagename.lower().find("windows") >= 0

    case = _spawn_server_test_case(imageid=imageid, flavorid=flavorid,

                                   imagename=imagename,

                                   personality=personality,

                                   servername=servername,

                                   is_windows=is_windows,

                                   action_timeout=opts.action_timeout,

                                   build_warning=opts.build_warning,

                                   build_fail=opts.build_fail,

                                   query_interval=opts.query_interval)

    cases.append(case)

    # FIXME: logging, log, UNIQUE_RUN_ID arguments

    # Run them: FIXME: In parallel, FAILEARLY, catchbreak?

    #unittest.main(verbosity=2, catchbreak=True)

    #

    # Run the resulting test suite

    #

    suites = map(unittest.TestLoader().loadTestsFromTestCase, cases)

    alltests = unittest.TestSuite(suites)

    unittest.TextTestRunner(verbosity=2, failfast=opts.failfast).run(alltests)

if __name__ == "__main__":

    sys.exit(main())