openstack
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swift
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swift/test/probe/common.py

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Python
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# Copyright (c) 2010-2012 OpenStack Foundation
#
# 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.
from httplib import HTTPConnection
import os
from subprocess import Popen, PIPE
import sys
from time import sleep, time
from collections import defaultdict
from nose import SkipTest
from swiftclient import get_auth, head_account
from swift.common.ring import Ring
from swift.common.utils import readconf
from swift.common.manager import Manager
from swift.common.storage_policy import POLICIES
from test.probe import CHECK_SERVER_TIMEOUT, VALIDATE_RSYNC
ENABLED_POLICIES = [p for p in POLICIES if not p.is_deprecated]
def get_server_number(port, port2server):
server_number = port2server[port]
server, number = server_number[:-1], server_number[-1:]
try:
number = int(number)
except ValueError:
# probably the proxy
return server_number, None
return server, number
def start_server(port, port2server, pids, check=True):
server, number = get_server_number(port, port2server)
err = Manager([server]).start(number=number, wait=False)
if err:
raise Exception('unable to start %s' % (
server if not number else '%s%s' % (server, number)))
if check:
return check_server(port, port2server, pids)
return None
def check_server(port, port2server, pids, timeout=CHECK_SERVER_TIMEOUT):
server = port2server[port]
if server[:-1] in ('account', 'container', 'object'):
if int(server[-1]) > 4:
return None
path = '/connect/1/2'
if server[:-1] == 'container':
path += '/3'
elif server[:-1] == 'object':
path += '/3/4'
try_until = time() + timeout
while True:
try:
conn = HTTPConnection('127.0.0.1', port)
conn.request('GET', path)
resp = conn.getresponse()
# 404 because it's a nonsense path (and mount_check is false)
# 507 in case the test target is a VM using mount_check
if resp.status not in (404, 507):
raise Exception(
'Unexpected status %s' % resp.status)
break
except Exception as err:
if time() > try_until:
print err
print 'Giving up on %s:%s after %s seconds.' % (
server, port, timeout)
raise err
sleep(0.1)
else:
try_until = time() + timeout
while True:
try:
url, token = get_auth('http://127.0.0.1:8080/auth/v1.0',
'test:tester', 'testing')
account = url.split('/')[-1]
head_account(url, token)
return url, token, account
except Exception as err:
if time() > try_until:
print err
print 'Giving up on proxy:8080 after 30 seconds.'
raise err
sleep(0.1)
return None
def kill_server(port, port2server, pids):
server, number = get_server_number(port, port2server)
err = Manager([server]).kill(number=number)
if err:
raise Exception('unable to kill %s' % (server if not number else
'%s%s' % (server, number)))
try_until = time() + 30
while True:
try:
conn = HTTPConnection('127.0.0.1', port)
conn.request('GET', '/')
conn.getresponse()
except Exception as err:
break
if time() > try_until:
raise Exception(
'Still answering on port %s after 30 seconds' % port)
sleep(0.1)
def kill_servers(port2server, pids):
Manager(['all']).kill()
def kill_nonprimary_server(primary_nodes, port2server, pids):
primary_ports = [n['port'] for n in primary_nodes]
for port, server in port2server.iteritems():
if port in primary_ports:
server_type = server[:-1]
break
else:
raise Exception('Cannot figure out server type for %r' % primary_nodes)
for port, server in list(port2server.iteritems()):
if server[:-1] == server_type and port not in primary_ports:
kill_server(port, port2server, pids)
return port
def get_ring(ring_name, server=None, force_validate=None):
if not server:
server = ring_name
ring = Ring('/etc/swift', ring_name=ring_name)
if not VALIDATE_RSYNC and not force_validate:
return ring
# easy sanity checks
if ring.replica_count != 3:
print 'WARNING: %s has %s replicas instead of 3' % (
ring.serialized_path, ring.replica_count)
assert 4 == len(ring.devs), '%s has %s devices instead of 4' % (
ring.serialized_path, len(ring.devs))
# map server to config by port
port_to_config = {}
for server_ in Manager([server]):
for config_path in server_.conf_files():
conf = readconf(config_path,
section_name='%s-replicator' % server_.type)
port_to_config[int(conf['bind_port'])] = conf
for dev in ring.devs:
# verify server is exposing mounted device
conf = port_to_config[dev['port']]
for device in os.listdir(conf['devices']):
if device == dev['device']:
dev_path = os.path.join(conf['devices'], device)
full_path = os.path.realpath(dev_path)
assert os.path.exists(full_path), \
'device %s in %s was not found (%s)' % (
device, conf['devices'], full_path)
break
else:
raise AssertionError(
"unable to find ring device %s under %s's devices (%s)" % (
dev['device'], server, conf['devices']))
# verify server is exposing rsync device
if port_to_config[dev['port']].get('vm_test_mode', False):
rsync_export = '%s%s' % (server, dev['replication_port'])
else:
rsync_export = server
cmd = "rsync rsync://localhost/%s" % rsync_export
p = Popen(cmd, shell=True, stdout=PIPE)
stdout, _stderr = p.communicate()
if p.returncode:
raise AssertionError('unable to connect to rsync '
'export %s (%s)' % (rsync_export, cmd))
for line in stdout.splitlines():
if line.rsplit(None, 1)[-1] == dev['device']:
break
else:
raise AssertionError("unable to find ring device %s under rsync's "
"exported devices for %s (%s)" % (
dev['device'], rsync_export, cmd))
return ring
def reset_environment():
p = Popen("resetswift 2>&1", shell=True, stdout=PIPE)
stdout, _stderr = p.communicate()
print stdout
Manager(['all']).stop()
pids = {}
try:
account_ring = get_ring('account')
container_ring = get_ring('container')
policy = POLICIES.default
object_ring = get_ring(policy.ring_name, 'object')
Manager(['main']).start(wait=False)
port2server = {}
for server, port in [('account', 6002), ('container', 6001),
('object', 6000)]:
for number in xrange(1, 9):
port2server[port + (number * 10)] = '%s%d' % (server, number)
for port in port2server:
check_server(port, port2server, pids)
port2server[8080] = 'proxy'
url, token, account = check_server(8080, port2server, pids)
config_dict = defaultdict(dict)
for name in ('account', 'container', 'object'):
for server_name in (name, '%s-replicator' % name):
for server in Manager([server_name]):
for i, conf in enumerate(server.conf_files(), 1):
config_dict[server.server][i] = conf
except BaseException:
try:
raise
except AssertionError as e:
raise SkipTest(e)
finally:
try:
kill_servers(port2server, pids)
except Exception:
pass
return pids, port2server, account_ring, container_ring, object_ring, \
policy, url, token, account, config_dict
def get_to_final_state():
replicators = Manager(['account-replicator', 'container-replicator',
'object-replicator'])
replicators.stop()
updaters = Manager(['container-updater', 'object-updater'])
updaters.stop()
replicators.once()
updaters.once()
replicators.once()
if __name__ == "__main__":
for server in ('account', 'container'):
try:
get_ring(server, force_validate=True)
except AssertionError as err:
sys.exit('%s ERROR: %s' % (server, err))
print '%s OK' % server
for policy in POLICIES:
try:
get_ring(policy.ring_name, server='object', force_validate=True)
except AssertionError as err:
sys.exit('object ERROR (%s): %s' % (policy.name, err))
print 'object OK (%s)' % policy.name
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