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 subprocess import Popen
from unittest import main, TestCase
from uuid import uuid4
import os
import time
import shutil
from swiftclient import client
from test.probe.common import kill_servers, reset_environment
from swift.common.utils import readconf
def collect_info(path_list):
"""
Recursive collect dirs and files in path_list directory.
:param path_list: start directory for collecting
:return files_list, dir_list: tuple of included
directories and files
"""
files_list = []
dir_list = []
for path in path_list:
temp_files_list = []
temp_dir_list = []
for root, dirs, files in os.walk(path):
temp_files_list += files
temp_dir_list += dirs
files_list.append(temp_files_list)
dir_list.append(temp_dir_list)
return files_list, dir_list
def find_max_occupancy_node(dir_list):
"""
Find node with maximum occupancy.
:param list_dir: list of directories for each node.
:return number: number node in list_dir
"""
count = 0
number = 0
length = 0
for dirs in dir_list:
if length < len(dirs):
length = len(dirs)
number = count
count += 1
return number
class TestReplicatorFunctions(TestCase):
"""
Class for testing replicators and replication servers.
By default configuration - replication servers not used.
For testing separete replication servers servers need to change
ring's files using set_info command or new ring's files with
different port values.
"""
def setUp(self):
"""
Reset all environment and start all servers.
"""
(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):
"""
Stop all servers.
"""
kill_servers(self.port2server, self.pids)
def test_main(self):
# Create one account, container and object file.
# Find node with account, container and object replicas.
# Delete all directories and files from this node (device).
# Wait 60 seconds and check replication results.
# Delete directories and files in objects storage without
# deleting file "hashes.pkl".
# Check, that files not replicated.
# Delete file "hashes.pkl".
# Check, that all files were replicated.
path_list = []
# Figure out where the devices are
for node_id in range(1, 5):
conf = readconf(self.configs['object'] % node_id)
device_path = conf['app:object-server']['devices']
for dev in self.object_ring.devs:
if dev['port'] == int(conf['app:object-server']['bind_port']):
device = dev['device']
path_list.append(os.path.join(device_path, device))
# Put data to storage nodes
container = 'container-%s' % uuid4()
client.put_container(self.url, self.token, container)
obj = 'object-%s' % uuid4()
client.put_object(self.url, self.token, container, obj, 'VERIFY')
# Get all data file information
(files_list, dir_list) = collect_info(path_list)
num = find_max_occupancy_node(dir_list)
test_node = path_list[num]
test_node_files_list = []
for files in files_list[num]:
if not files.endswith('.pending'):
test_node_files_list.append(files)
test_node_dir_list = dir_list[num]
# Run all replicators
processes = []
try:
for num in xrange(1, 9):
for server in ['object-replicator',
'container-replicator',
'account-replicator']:
if not os.path.exists(self.configs[server] % (num)):
continue
processes.append(Popen(['swift-%s' % (server),
self.configs[server] % (num),
'forever']))
# Delete some files
for directory in os.listdir(test_node):
shutil.rmtree(os.path.join(test_node, directory))
self.assertFalse(os.listdir(test_node))
# We will keep trying these tests until they pass for up to 60s
begin = time.time()
while True:
(new_files_list, new_dir_list) = collect_info([test_node])
try:
# Check replicate files and dir
for files in test_node_files_list:
self.assertTrue(files in new_files_list[0])
for dir in test_node_dir_list:
self.assertTrue(dir in new_dir_list[0])
break
except Exception:
if time.time() - begin > 60:
raise
time.sleep(1)
# Check behavior by deleting hashes.pkl file
for directory in os.listdir(os.path.join(test_node, 'objects')):
for input_dir in os.listdir(os.path.join(
test_node, 'objects', directory)):
if os.path.isdir(os.path.join(
test_node, 'objects', directory, input_dir)):
shutil.rmtree(os.path.join(
test_node, 'objects', directory, input_dir))
# We will keep trying these tests until they pass for up to 60s
begin = time.time()
while True:
try:
for directory in os.listdir(os.path.join(
test_node, 'objects')):
for input_dir in os.listdir(os.path.join(
test_node, 'objects', directory)):
self.assertFalse(os.path.isdir(
os.path.join(test_node, 'objects',
directory, '/', input_dir)))
break
except Exception:
if time.time() - begin > 60:
raise
time.sleep(1)
for directory in os.listdir(os.path.join(test_node, 'objects')):
os.remove(os.path.join(
test_node, 'objects', directory, 'hashes.pkl'))
# We will keep trying these tests until they pass for up to 60s
begin = time.time()
while True:
try:
(new_files_list, new_dir_list) = collect_info([test_node])
# Check replicate files and dirs
for files in test_node_files_list:
self.assertTrue(files in new_files_list[0])
for directory in test_node_dir_list:
self.assertTrue(directory in new_dir_list[0])
break
except Exception:
if time.time() - begin > 60:
raise
time.sleep(1)
finally:
for process in processes:
process.kill()
if __name__ == '__main__':
main()