228 lines
8.1 KiB
Python
228 lines
8.1 KiB
Python
#!/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 hashlib import md5
|
|
import unittest
|
|
import uuid
|
|
import shutil
|
|
import random
|
|
from collections import defaultdict
|
|
|
|
from test.probe.common import ECProbeTest
|
|
|
|
from swift.common import direct_client
|
|
from swift.common.storage_policy import EC_POLICY
|
|
from swift.common.manager import Manager
|
|
from swift.obj.reconstructor import _get_partners
|
|
|
|
from swiftclient import client
|
|
|
|
|
|
class Body(object):
|
|
|
|
def __init__(self, total=3.5 * 2 ** 20):
|
|
self.total = total
|
|
self.hasher = md5()
|
|
self.size = 0
|
|
self.chunk = 'test' * 16 * 2 ** 10
|
|
|
|
@property
|
|
def etag(self):
|
|
return self.hasher.hexdigest()
|
|
|
|
def __iter__(self):
|
|
return self
|
|
|
|
def next(self):
|
|
if self.size > self.total:
|
|
raise StopIteration()
|
|
self.size += len(self.chunk)
|
|
self.hasher.update(self.chunk)
|
|
return self.chunk
|
|
|
|
def __next__(self):
|
|
return next(self)
|
|
|
|
|
|
class TestReconstructorRebuild(ECProbeTest):
|
|
|
|
def setUp(self):
|
|
super(TestReconstructorRebuild, self).setUp()
|
|
self.container_name = 'container-%s' % uuid.uuid4()
|
|
self.object_name = 'object-%s' % uuid.uuid4()
|
|
# sanity
|
|
self.assertEqual(self.policy.policy_type, EC_POLICY)
|
|
self.reconstructor = Manager(["object-reconstructor"])
|
|
|
|
def proxy_get(self):
|
|
# GET object
|
|
headers, body = client.get_object(self.url, self.token,
|
|
self.container_name,
|
|
self.object_name,
|
|
resp_chunk_size=64 * 2 ** 10)
|
|
resp_checksum = md5()
|
|
for chunk in body:
|
|
resp_checksum.update(chunk)
|
|
return resp_checksum.hexdigest()
|
|
|
|
def direct_get(self, node, part):
|
|
req_headers = {'X-Backend-Storage-Policy-Index': int(self.policy)}
|
|
headers, data = direct_client.direct_get_object(
|
|
node, part, self.account, self.container_name,
|
|
self.object_name, headers=req_headers,
|
|
resp_chunk_size=64 * 2 ** 20)
|
|
hasher = md5()
|
|
for chunk in data:
|
|
hasher.update(chunk)
|
|
return hasher.hexdigest()
|
|
|
|
def _check_node(self, node, part, etag, headers_post):
|
|
# get fragment archive etag
|
|
fragment_archive_etag = self.direct_get(node, part)
|
|
|
|
# remove data from the selected node
|
|
part_dir = self.storage_dir('object', node, part=part)
|
|
shutil.rmtree(part_dir, True)
|
|
|
|
# this node can't servce the data any more
|
|
try:
|
|
self.direct_get(node, part)
|
|
except direct_client.DirectClientException as err:
|
|
self.assertEqual(err.http_status, 404)
|
|
else:
|
|
self.fail('Node data on %r was not fully destoryed!' %
|
|
(node,))
|
|
|
|
# make sure we can still GET the object and its correct, the
|
|
# proxy is doing decode on remaining fragments to get the obj
|
|
self.assertEqual(etag, self.proxy_get())
|
|
|
|
# fire up reconstructor
|
|
self.reconstructor.once()
|
|
|
|
# fragment is rebuilt exactly as it was before!
|
|
self.assertEqual(fragment_archive_etag,
|
|
self.direct_get(node, part))
|
|
|
|
# check meta
|
|
meta = client.head_object(self.url, self.token,
|
|
self.container_name,
|
|
self.object_name)
|
|
for key in headers_post:
|
|
self.assertTrue(key in meta)
|
|
self.assertEqual(meta[key], headers_post[key])
|
|
|
|
def _format_node(self, node):
|
|
return '%s#%s' % (node['device'], node['index'])
|
|
|
|
def test_main(self):
|
|
# create EC container
|
|
headers = {'X-Storage-Policy': self.policy.name}
|
|
client.put_container(self.url, self.token, self.container_name,
|
|
headers=headers)
|
|
|
|
# PUT object
|
|
contents = Body()
|
|
headers = {'x-object-meta-foo': 'meta-foo'}
|
|
headers_post = {'x-object-meta-bar': 'meta-bar'}
|
|
|
|
etag = client.put_object(self.url, self.token,
|
|
self.container_name,
|
|
self.object_name,
|
|
contents=contents, headers=headers)
|
|
client.post_object(self.url, self.token, self.container_name,
|
|
self.object_name, headers=headers_post)
|
|
del headers_post['X-Auth-Token'] # WTF, where did this come from?
|
|
|
|
# built up a list of node lists to kill data from,
|
|
# first try a single node
|
|
# then adjacent nodes and then nodes >1 node apart
|
|
opart, onodes = self.object_ring.get_nodes(
|
|
self.account, self.container_name, self.object_name)
|
|
single_node = [random.choice(onodes)]
|
|
adj_nodes = [onodes[0], onodes[-1]]
|
|
far_nodes = [onodes[0], onodes[-2]]
|
|
test_list = [single_node, adj_nodes, far_nodes]
|
|
|
|
for node_list in test_list:
|
|
for onode in node_list:
|
|
try:
|
|
self._check_node(onode, opart, etag, headers_post)
|
|
except AssertionError as e:
|
|
self.fail(
|
|
str(e) + '\n... for node %r of scenario %r' % (
|
|
self._format_node(onode),
|
|
[self._format_node(n) for n in node_list]))
|
|
|
|
def test_rebuild_partner_down(self):
|
|
# create EC container
|
|
headers = {'X-Storage-Policy': self.policy.name}
|
|
client.put_container(self.url, self.token, self.container_name,
|
|
headers=headers)
|
|
|
|
# PUT object
|
|
contents = Body()
|
|
client.put_object(self.url, self.token,
|
|
self.container_name,
|
|
self.object_name,
|
|
contents=contents)
|
|
|
|
opart, onodes = self.object_ring.get_nodes(
|
|
self.account, self.container_name, self.object_name)
|
|
|
|
# find a primary server that only has one of it's devices in the
|
|
# primary node list
|
|
group_nodes_by_config = defaultdict(list)
|
|
for n in onodes:
|
|
group_nodes_by_config[self.config_number(n)].append(n)
|
|
for config_number, node_list in group_nodes_by_config.items():
|
|
if len(node_list) == 1:
|
|
break
|
|
else:
|
|
self.fail('ring balancing did not use all available nodes')
|
|
primary_node = node_list[0]
|
|
|
|
# pick one it's partners to fail randomly
|
|
partner_node = random.choice(_get_partners(
|
|
primary_node['index'], onodes))
|
|
|
|
# 507 the partner device
|
|
device_path = self.device_dir('object', partner_node)
|
|
self.kill_drive(device_path)
|
|
|
|
# select another primary sync_to node to fail
|
|
failed_primary = [n for n in onodes if n['id'] not in
|
|
(primary_node['id'], partner_node['id'])][0]
|
|
# ... capture it's fragment etag
|
|
failed_primary_etag = self.direct_get(failed_primary, opart)
|
|
# ... and delete it
|
|
part_dir = self.storage_dir('object', failed_primary, part=opart)
|
|
shutil.rmtree(part_dir, True)
|
|
|
|
# reconstruct from the primary, while one of it's partners is 507'd
|
|
self.reconstructor.once(number=self.config_number(primary_node))
|
|
|
|
# the other failed primary will get it's fragment rebuilt instead
|
|
self.assertEqual(failed_primary_etag,
|
|
self.direct_get(failed_primary, opart))
|
|
|
|
# just to be nice
|
|
self.revive_drive(device_path)
|
|
|
|
|
|
if __name__ == "__main__":
|
|
unittest.main()
|