nova/smoketests/base.py
Dan Prince 731c6b1d5d Fix wait_for_deleted function in SmokeTests.
Fixes the wait_for_not_running function in smoketests/base.py so
that it short circuits when an instance ID is deleted rather than
waits 60 seconds (the timeout). Previously this function had
two problems:

 1) It used Boto's instance.update() instead of instance.update(validate=True).
 Since update() returns returns quietly if no data about the instance was
 returned (aka the instance has been deleted) it effectively made this
 function almost always wait for the timeout (60 seconds). This makes the
 tests take about a minute longer than they need to unless #2 below
 occurs...

 2) It also introduced a race condition in that... if hit just right
 the instance.state would get set to 'terminated'. Which would cause
 the loop to short circuit. This might seem correct at first glance but
 in fact causes intermittent failures in some of the netadmin tests
 because security groups can't be deleted if a running (or exiting)
 instance is still assigned to them. In fact wait_for_not_running
 was added to guard against just this in the first place!

Also, renames the base.wait_for_not_running function to be
called wait_for_deleted (that is what we are really doing here)

Change-Id: I4486995a7d9028d876366e8d7a2c845520319b86
2012-11-21 10:57:25 -05:00

207 lines
7.1 KiB
Python

# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright 2010 United States Government as represented by the
# Administrator of the National Aeronautics and Space Administration.
# All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import boto
from boto.ec2.regioninfo import RegionInfo
import commands
import httplib
import os
import paramiko
import sys
import time
import unittest
from smoketests import flags
SUITE_NAMES = '[image, instance, volume]'
FLAGS = flags.FLAGS
flags.DEFINE_string('suite', None, 'Specific test suite to run ' + SUITE_NAMES)
flags.DEFINE_integer('ssh_tries', 3, 'Numer of times to try ssh')
class SmokeTestCase(unittest.TestCase):
def connect_ssh(self, ip, key_name):
key = paramiko.RSAKey.from_private_key_file('/tmp/%s.pem' % key_name)
tries = 0
while(True):
try:
client = paramiko.SSHClient()
client.set_missing_host_key_policy(paramiko.AutoAddPolicy())
client.connect(ip, username='root', pkey=key, timeout=5)
return client
except (paramiko.AuthenticationException, paramiko.SSHException):
tries += 1
if tries == FLAGS.ssh_tries:
raise
def can_ping(self, ip, command="ping"):
"""Attempt to ping the specified IP, and give up after 1 second."""
# NOTE(devcamcar): ping timeout flag is different in OSX.
if sys.platform == 'darwin':
timeout_flag = 't'
else:
timeout_flag = 'w'
status, output = commands.getstatusoutput('%s -c1 -%s1 %s' %
(command, timeout_flag, ip))
return status == 0
def wait_for_running(self, instance, tries=60, wait=1):
"""Wait for instance to be running"""
for x in xrange(tries):
instance.update()
if instance.state.startswith('running'):
return True
time.sleep(wait)
else:
return False
def wait_for_deleted(self, instance, tries=60, wait=1):
"""Wait for instance to be deleted"""
for x in xrange(tries):
try:
#NOTE(dprince): raises exception when instance id disappears
instance.update(validate=True)
except ValueError:
return True
time.sleep(wait)
else:
return False
def wait_for_ping(self, ip, command="ping", tries=120):
"""Wait for ip to be pingable"""
for x in xrange(tries):
if self.can_ping(ip, command):
return True
else:
return False
def wait_for_ssh(self, ip, key_name, tries=30, wait=5):
"""Wait for ip to be sshable"""
for x in xrange(tries):
try:
conn = self.connect_ssh(ip, key_name)
conn.close()
except Exception, e:
time.sleep(wait)
else:
return True
else:
return False
def connection_for_env(self, **kwargs):
"""
Returns a boto ec2 connection for the current environment.
"""
access_key = os.getenv('EC2_ACCESS_KEY')
secret_key = os.getenv('EC2_SECRET_KEY')
clc_url = os.getenv('EC2_URL')
if not access_key or not secret_key or not clc_url:
raise Exception('Missing EC2 environment variables. Please source '
'the appropriate novarc file before running this '
'test.')
parts = self.split_clc_url(clc_url)
if FLAGS.use_ipv6:
return boto_v6.connect_ec2(aws_access_key_id=access_key,
aws_secret_access_key=secret_key,
is_secure=parts['is_secure'],
region=RegionInfo(None,
'nova',
parts['ip']),
port=parts['port'],
path='/services/Cloud',
**kwargs)
return boto.connect_ec2(aws_access_key_id=access_key,
aws_secret_access_key=secret_key,
is_secure=parts['is_secure'],
region=RegionInfo(None,
'nova',
parts['ip']),
port=parts['port'],
path='/services/Cloud',
**kwargs)
def split_clc_url(self, clc_url):
"""
Splits a cloud controller endpoint url.
"""
parts = httplib.urlsplit(clc_url)
is_secure = parts.scheme == 'https'
ip, port = parts.netloc.split(':')
return {'ip': ip, 'port': int(port), 'is_secure': is_secure}
def create_key_pair(self, conn, key_name):
try:
os.remove('/tmp/%s.pem' % key_name)
except Exception:
pass
key = conn.create_key_pair(key_name)
key.save('/tmp/')
return key
def delete_key_pair(self, conn, key_name):
conn.delete_key_pair(key_name)
try:
os.remove('/tmp/%s.pem' % key_name)
except Exception:
pass
def bundle_image(self, image, tempdir='/tmp', kernel=False):
cmd = 'euca-bundle-image -i %s -d %s' % (image, tempdir)
if kernel:
cmd += ' --kernel true'
status, output = commands.getstatusoutput(cmd)
if status != 0:
print '%s -> \n %s' % (cmd, output)
raise Exception(output)
return True
def upload_image(self, bucket_name, image, tempdir='/tmp'):
cmd = 'euca-upload-bundle -b '
cmd += '%s -m %s/%s.manifest.xml' % (bucket_name, tempdir, image)
status, output = commands.getstatusoutput(cmd)
if status != 0:
print '%s -> \n %s' % (cmd, output)
raise Exception(output)
return True
def delete_bundle_bucket(self, bucket_name):
cmd = 'euca-delete-bundle --clear -b %s' % (bucket_name)
status, output = commands.getstatusoutput(cmd)
if status != 0:
print '%s -> \n%s' % (cmd, output)
raise Exception(output)
return True
TEST_DATA = {}
if FLAGS.use_ipv6:
global boto_v6
boto_v6 = __import__('boto_v6')
class UserSmokeTestCase(SmokeTestCase):
def setUp(self):
global TEST_DATA
self.conn = self.connection_for_env()
self.data = TEST_DATA