OpenStack Storage (Swift)
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#!/usr/bin/python -u
# 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 os import listdir
from os.path import join as path_join
from unittest import main, TestCase
from uuid import uuid4
from eventlet import GreenPool, Timeout
import eventlet
from sqlite3 import connect
from swiftclient import client
from swift.common import direct_client
from swift.common.utils import hash_path, readconf
from test.probe.common import get_to_final_state, kill_nonprimary_server, \
kill_server, kill_servers, reset_environment, start_server
eventlet.monkey_patch(all=False, socket=True)
def get_db_file_path(obj_dir):
files = sorted(listdir(obj_dir), reverse=True)
for filename in files:
if filename.endswith('db'):
return path_join(obj_dir, filename)
class TestContainerFailures(TestCase):
def setUp(self):
(self.pids, self.port2server, self.account_ring, self.container_ring,
self.object_ring, self.url, self.token,
self.account, self.configs) = reset_environment()
def tearDown(self):
kill_servers(self.port2server, self.pids)
def test_one_node_fails(self):
# Create container1
# Kill container1 servers excepting two of the primaries
# Delete container1
# Restart other container1 primary server
# Create container1/object1 (allowed because at least server thinks the
# container exists)
# Get to a final state
# Assert all container1 servers indicate container1 is alive and
# well with object1
# Assert account level also indicates container1 is alive and
# well with object1
container1 = 'container-%s' % uuid4()
cpart, cnodes = self.container_ring.get_nodes(self.account, container1)
client.put_container(self.url, self.token, container1)
kill_nonprimary_server(cnodes, self.port2server, self.pids)
kill_server(cnodes[0]['port'], self.port2server, self.pids)
client.delete_container(self.url, self.token, container1)
start_server(cnodes[0]['port'], self.port2server, self.pids)
client.put_object(self.url, self.token, container1, 'object1', '123')
get_to_final_state()
for cnode in cnodes:
self.assertEquals(
[o['name'] for o in direct_client.direct_get_container(
cnode, cpart, self.account, container1)[1]],
['object1'])
headers, containers = client.get_account(self.url, self.token)
self.assertEquals(headers['x-account-container-count'], '1')
self.assertEquals(headers['x-account-object-count'], '1')
self.assertEquals(headers['x-account-bytes-used'], '3')
def test_two_nodes_fail(self):
# Create container1
# Kill container1 servers excepting one of the primaries
# Delete container1 directly to the one primary still up
# Restart other container1 servers
# Get to a final state
# Assert all container1 servers indicate container1 is gone (happens
# because the one node that knew about the delete replicated to the
# others.)
# Assert account level also indicates container1 is gone
container1 = 'container-%s' % uuid4()
cpart, cnodes = self.container_ring.get_nodes(self.account, container1)
client.put_container(self.url, self.token, container1)
cnp_port = kill_nonprimary_server(cnodes, self.port2server, self.pids)
kill_server(cnodes[0]['port'], self.port2server, self.pids)
kill_server(cnodes[1]['port'], self.port2server, self.pids)
direct_client.direct_delete_container(cnodes[2], cpart, self.account,
container1)
start_server(cnodes[0]['port'], self.port2server, self.pids)
start_server(cnodes[1]['port'], self.port2server, self.pids)
start_server(cnp_port, self.port2server, self.pids)
get_to_final_state()
for cnode in cnodes:
exc = None
try:
direct_client.direct_get_container(cnode, cpart, self.account,
container1)
except client.ClientException as err:
exc = err
self.assertEquals(exc.http_status, 404)
headers, containers = client.get_account(self.url, self.token)
self.assertEquals(headers['x-account-container-count'], '0')
self.assertEquals(headers['x-account-object-count'], '0')
self.assertEquals(headers['x-account-bytes-used'], '0')
def _get_container_db_files(self, container):
opart, onodes = self.container_ring.get_nodes(self.account, container)
onode = onodes[0]
db_files = []
for onode in onodes:
node_id = (onode['port'] - 6000) / 10
device = onode['device']
hash_str = hash_path(self.account, container)
server_conf = readconf(self.configs['container'] % node_id)
devices = server_conf['app:container-server']['devices']
obj_dir = '%s/%s/containers/%s/%s/%s/' % (devices,
device, opart,
hash_str[-3:], hash_str)
db_files.append(get_db_file_path(obj_dir))
return db_files
def test_locked_container_dbs(self):
def run_test(num_locks, catch_503):
container = 'container-%s' % uuid4()
client.put_container(self.url, self.token, container)
db_files = self._get_container_db_files(container)
db_conns = []
for i in range(num_locks):
db_conn = connect(db_files[i])
db_conn.execute('begin exclusive transaction')
db_conns.append(db_conn)
if catch_503:
exc = None
try:
client.delete_container(self.url, self.token, container)
except client.ClientException as err:
exc = err
self.assertEquals(exc.http_status, 503)
else:
client.delete_container(self.url, self.token, container)
pool = GreenPool()
try:
with Timeout(15):
pool.spawn(run_test, 1, False)
pool.spawn(run_test, 2, True)
pool.spawn(run_test, 3, True)
pool.waitall()
except Timeout as err:
raise Exception(
"The server did not return a 503 on container db locks, "
"it just hangs: %s" % err)
if __name__ == '__main__':
main()