root / snf-tools / synnefo_tools / burnin / cyclades_common.py @ ee89df69
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# Copyright 2013 GRNET S.A. All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or
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# without modification, are permitted provided that the following
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# conditions are met:
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#
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# 1. Redistributions of source code must retain the above
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# copyright notice, this list of conditions and the following
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# disclaimer.
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#
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# 2. Redistributions in binary form must reproduce the above
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# copyright notice, this list of conditions and the following
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# disclaimer in the documentation and/or other materials
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# provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
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# OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
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# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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# USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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#
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# The views and conclusions contained in the software and
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# documentation are those of the authors and should not be
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# interpreted as representing official policies, either expressed
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# or implied, of GRNET S.A.
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"""
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Utility functions for Cyclades Tests
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Cyclades require a lot helper functions and `common'
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had grown too much.
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"""
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import time |
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import base64 |
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import socket |
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import random |
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import paramiko |
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import tempfile |
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import subprocess |
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from synnefo_tools.burnin.common import BurninTests |
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# Too many public methods. pylint: disable-msg=R0904
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class CycladesTests(BurninTests): |
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"""Extends the BurninTests class for Cyclades"""
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def _try_until_timeout_expires(self, opmsg, check_fun): |
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"""Try to perform an action until timeout expires"""
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assert callable(check_fun), "Not a function" |
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action_timeout = self.action_timeout
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action_warning = self.action_warning
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if action_warning > action_timeout:
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action_warning = action_timeout |
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start_time = int(time.time())
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end_time = start_time + action_warning |
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while end_time > time.time():
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try:
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ret_value = check_fun() |
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self.info("Operation `%s' finished in %s seconds", |
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opmsg, int(time.time()) - start_time)
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return ret_value
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except Retry:
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time.sleep(self.query_interval)
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self.warning("Operation `%s' is taking too long after %s seconds", |
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opmsg, int(time.time()) - start_time)
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end_time = start_time + action_timeout |
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while end_time > time.time():
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try:
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ret_value = check_fun() |
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self.info("Operation `%s' finished in %s seconds", |
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opmsg, int(time.time()) - start_time)
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return ret_value
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except Retry:
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time.sleep(self.query_interval)
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self.error("Operation `%s' timed out after %s seconds", |
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opmsg, int(time.time()) - start_time)
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self.fail("time out") |
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def _get_list_of_servers(self, detail=False): |
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"""Get (detailed) list of servers"""
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if detail:
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self.info("Getting detailed list of servers") |
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else:
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self.info("Getting simple list of servers") |
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return self.clients.cyclades.list_servers(detail=detail) |
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def _get_list_of_networks(self, detail=False): |
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"""Get (detailed) list of networks"""
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if detail:
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self.info("Getting detailed list of networks") |
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else:
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self.info("Getting simple list of networks") |
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return self.clients.cyclades.list_networks(detail=detail) |
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def _get_server_details(self, server, quiet=False): |
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"""Get details for a server"""
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if not quiet: |
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self.info("Getting details for server %s with id %s", |
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server['name'], server['id']) |
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return self.clients.cyclades.get_server_details(server['id']) |
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def _create_server(self, image, flavor, personality=None): |
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"""Create a new server"""
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servername = "%s for %s" % (self.run_id, image['name']) |
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self.info("Creating a server with name %s", servername) |
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self.info("Using image %s with id %s", image['name'], image['id']) |
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self.info("Using flavor %s with id %s", flavor['name'], flavor['id']) |
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server = self.clients.cyclades.create_server(
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servername, flavor['id'], image['id'], personality=personality) |
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self.info("Server id: %s", server['id']) |
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self.info("Server password: %s", server['adminPass']) |
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self.assertEqual(server['name'], servername) |
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self.assertEqual(server['flavor']['id'], flavor['id']) |
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self.assertEqual(server['image']['id'], image['id']) |
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self.assertEqual(server['status'], "BUILD") |
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return server
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def _get_connection_username(self, server): |
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"""Determine the username to use to connect to the server"""
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users = server['metadata'].get("users", None) |
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ret_user = None
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if users is not None: |
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user_list = users.split() |
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if "root" in user_list: |
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ret_user = "root"
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else:
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ret_user = random.choice(user_list) |
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else:
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# Return the login name for connections based on the server OS
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self.info("Could not find `users' metadata in server. Let's guess") |
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os_value = server['metadata'].get("os") |
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if os_value in ("Ubuntu", "Kubuntu", "Fedora"): |
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ret_user = "user"
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elif os_value in ("windows", "windows_alpha1"): |
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ret_user = "Administrator"
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else:
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ret_user = "root"
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self.assertIsNotNone(ret_user)
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self.info("User's login name: %s", ret_user) |
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return ret_user
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def _insist_on_server_transition(self, server, curr_statuses, new_status): |
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"""Insist on server transiting from curr_statuses to new_status"""
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def check_fun(): |
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"""Check server status"""
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srv = self._get_server_details(server, quiet=True) |
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if srv['status'] in curr_statuses: |
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raise Retry()
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elif srv['status'] == new_status: |
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return
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else:
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msg = "Server \"%s\" with id %s went to unexpected status %s"
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self.error(msg, server['name'], server['id'], srv['status']) |
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self.fail(msg % (server['name'], server['id'], srv['status'])) |
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opmsg = "Waiting for server \"%s\" to become %s"
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self.info(opmsg, server['name'], new_status) |
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opmsg = opmsg % (server['name'], new_status)
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self._try_until_timeout_expires(opmsg, check_fun)
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def _insist_on_network_transition(self, network, |
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curr_statuses, new_status): |
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"""Insist on network transiting from curr_statuses to new_status"""
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def check_fun(): |
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"""Check network status"""
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ntw = self.clients.cyclades.get_network_details(network['id']) |
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if ntw['status'] in curr_statuses: |
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raise Retry()
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elif ntw['status'] == new_status: |
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return
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else:
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msg = "Network %s with id %s went to unexpected status %s"
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self.error(msg, network['name'], network['id'], ntw['status']) |
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self.fail(msg %
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(network['name'], network['id'], ntw['status'])) |
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opmsg = "Waiting for network \"%s\" to become %s"
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self.info(opmsg, network['name'], new_status) |
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opmsg = opmsg % (network['name'], new_status)
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self._try_until_timeout_expires(opmsg, check_fun)
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def _insist_on_network_connection(self, server, network, disconnect=False): |
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"""Insist that the server has connected to the network"""
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def check_fun(): |
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"""Check network connection"""
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dsrv = self._get_server_details(server, quiet=True) |
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nets = [s['network_id'] for s in dsrv['attachments']] |
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if not disconnect and network['id'] not in nets: |
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raise Retry()
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if disconnect and network['id'] in nets: |
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raise Retry()
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if disconnect:
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opmsg = \ |
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"Waiting for server \"%s\" to disconnect from network \"%s\""
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else:
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opmsg = "Waiting for server \"%s\" to connect to network \"%s\""
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self.info(opmsg, server['name'], network['name']) |
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opmsg = opmsg % (server['name'], network['name']) |
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self._try_until_timeout_expires(opmsg, check_fun)
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def _insist_on_tcp_connection(self, family, host, port): |
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"""Insist on tcp connection"""
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def check_fun(): |
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"""Get a connected socket from the specified family to host:port"""
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sock = None
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for res in socket.getaddrinfo(host, port, family, |
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socket.SOCK_STREAM, 0,
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socket.AI_PASSIVE): |
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fam, socktype, proto, _, saddr = res |
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try:
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sock = socket.socket(fam, socktype, proto) |
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except socket.error:
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sock = None
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continue
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try:
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sock.connect(saddr) |
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except socket.error:
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sock.close() |
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sock = None
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continue
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if sock is None: |
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raise Retry
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return sock
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familystr = {socket.AF_INET: "IPv4", socket.AF_INET6: "IPv6", |
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socket.AF_UNSPEC: "Unspecified-IPv4/6"}
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opmsg = "Connecting over %s to %s:%s"
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self.info(opmsg, familystr.get(family, "Unknown"), host, port) |
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opmsg = opmsg % (familystr.get(family, "Unknown"), host, port)
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return self._try_until_timeout_expires(opmsg, check_fun) |
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def _get_ip(self, server, version=4, network=None): |
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"""Get the IP of a server from the detailed server info
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If network not given then get the public IP. Else the ip
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attached to that network
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"""
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assert version in (4, 6) |
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nics = server['attachments']
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addrs = None
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for nic in nics: |
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net_id = nic['network_id']
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if network is None: |
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if self.clients.cyclades.get_network_details(net_id)['public']: |
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if nic['ipv' + str(version)]: |
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addrs = nic['ipv' + str(version)] |
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break
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else:
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if net_id == network['id']: |
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if nic['ipv' + str(version)]: |
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addrs = nic['ipv' + str(version)] |
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break
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self.assertIsNotNone(addrs, "Can not get IP from server attachments") |
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if network is None: |
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msg = "Server's public IPv%s is %s"
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self.info(msg, version, addrs)
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else:
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msg = "Server's IPv%s attached to network \"%s\" is %s"
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self.info(msg, version, network['id'], addrs) |
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return addrs
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def _insist_on_ping(self, ip_addr, version=4): |
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"""Test server responds to a single IPv4 of IPv6 ping"""
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def check_fun(): |
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"""Ping to server"""
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cmd = ("ping%s -c 3 -w 20 %s" %
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("6" if version == 6 else "", ip_addr)) |
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ping = subprocess.Popen( |
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cmd, shell=True, stdout=subprocess.PIPE,
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stderr=subprocess.PIPE) |
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ping.communicate() |
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ret = ping.wait() |
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if ret != 0: |
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raise Retry
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assert version in (4, 6) |
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opmsg = "Sent IPv%s ping requests to %s"
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self.info(opmsg, version, ip_addr)
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opmsg = opmsg % (version, ip_addr) |
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self._try_until_timeout_expires(opmsg, check_fun)
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def _image_is(self, image, osfamily): |
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"""Return true if the image is of `osfamily'"""
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d_image = self.clients.cyclades.get_image_details(image['id']) |
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return d_image['metadata']['osfamily'].lower().find(osfamily) >= 0 |
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def _ssh_execute(self, hostip, username, password, command): |
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"""Execute a command via ssh"""
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ssh = paramiko.SSHClient() |
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ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy()) |
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try:
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ssh.connect(hostip, username=username, password=password) |
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except socket.error as err: |
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self.fail(err)
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try:
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_, stdout, _ = ssh.exec_command(command) |
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except paramiko.SSHException as err: |
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self.fail(err)
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status = stdout.channel.recv_exit_status() |
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output = stdout.readlines() |
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ssh.close() |
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return output, status
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def _insist_get_hostname_over_ssh(self, hostip, username, password): |
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"""Connect to server using ssh and get it's hostname"""
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def check_fun(): |
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"""Get hostname"""
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try:
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lines, status = self._ssh_execute(
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hostip, username, password, "hostname")
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self.assertEqual(status, 0) |
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self.assertEqual(len(lines), 1) |
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# Remove new line
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return lines[0].strip('\n') |
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except AssertionError: |
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raise Retry()
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opmsg = "Connecting to server using ssh and get it's hostname"
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self.info(opmsg)
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hostname = self._try_until_timeout_expires(opmsg, check_fun)
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self.info("Server's hostname is %s", hostname) |
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return hostname
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# Too many arguments. pylint: disable-msg=R0913
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def _check_file_through_ssh(self, hostip, username, password, |
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remotepath, content): |
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"""Fetch file from server and compare contents"""
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self.info("Fetching file %s from remote server", remotepath) |
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transport = paramiko.Transport((hostip, 22))
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transport.connect(username=username, password=password) |
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with tempfile.NamedTemporaryFile() as ftmp: |
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sftp = paramiko.SFTPClient.from_transport(transport) |
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sftp.get(remotepath, ftmp.name) |
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sftp.close() |
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transport.close() |
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self.info("Comparing file contents") |
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remote_content = base64.b64encode(ftmp.read()) |
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self.assertEqual(content, remote_content)
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def _disconnect_from_network(self, server, network): |
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"""Disconnect server from network"""
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nid = None
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for nic in server['attachments']: |
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if nic['network_id'] == network['id']: |
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nid = nic['id']
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break
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self.assertIsNotNone(nid, "Could not find network card") |
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self.clients.cyclades.disconnect_server(server['id'], nid) |
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class Retry(Exception): |
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"""Retry the action
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This is used by _try_unit_timeout_expires method.
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"""
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