openstack/swift
Code Issues Proposed changes
swift/test/unit/obj/test_reconstructor.py
Mahati Chamarthy 188c07e12a Limit number of revert tombstone SSYNC requests 
Revert tombstone only parts try to talk to all primary nodes - this
fixes it to randomize selection within part_nodes. Corresponding probe
test is modified to reflect this change.

The primary improvement of this patch is the reconstuctor at a handoff
node is being able to delete local tombstones when it succeeds to sync
to less than all primary nodes. (Before this patch, it requires all
nodes are responsible for the REVERT requests)

The number of primary nodes to communicate with the reconstructor can be
in dicsussion more but, right now with this patch, it's (replicas - k + 1)
that is able to prevent stale read.

*BONUS*

- Fix mis-testsetting (was setting less replicas than ec_k + ec_m)
  for reconstructor ring in the unit test

Co-Authored-By: Kota Tsuyuzaki <tsuyuzaki.kota@lab.ntt.co.jp>
Co-Authored-By: Clay Gerrard <clay.gerrard@gmail.com>

Change-Id: I05ce8fe75f1c4a7971cc8995b003df818b69b3c1
Closes-Bug: #1668857
2017-06-08 07:07:42 +00:00

3479 lines
145 KiB
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.
import itertools
import json
import unittest
import os
from hashlib import md5
import mock
import six.moves.cPickle as pickle
import tempfile
import time
import shutil
import re
import random
import struct
import collections
from eventlet import Timeout, sleep
from contextlib import closing, contextmanager
from gzip import GzipFile
from shutil import rmtree
from swift.common import utils
from swift.common.exceptions import DiskFileError
from swift.common.header_key_dict import HeaderKeyDict
from swift.obj import diskfile, reconstructor as object_reconstructor
from swift.common import ring
from swift.common.storage_policy import (StoragePolicy, ECStoragePolicy,
POLICIES, EC_POLICY)
from swift.obj.reconstructor import REVERT
from test.unit import (patch_policies, debug_logger, mocked_http_conn,
FabricatedRing, make_timestamp_iter,
DEFAULT_TEST_EC_TYPE)
from test.unit.obj.common import write_diskfile
@contextmanager
def mock_ssync_sender(ssync_calls=None, response_callback=None, **kwargs):
def fake_ssync(daemon, node, job, suffixes):
if ssync_calls is not None:
ssync_calls.append(
{'node': node, 'job': job, 'suffixes': suffixes})
def fake_call():
if response_callback:
response = response_callback(node, job, suffixes)
else:
response = True, {}
return response
return fake_call
with mock.patch('swift.obj.reconstructor.ssync_sender', fake_ssync):
yield fake_ssync
def make_ec_archive_bodies(policy, test_body):
segment_size = policy.ec_segment_size
# split up the body into buffers
chunks = [test_body[x:x + segment_size]
for x in range(0, len(test_body), segment_size)]
# encode the buffers into fragment payloads
fragment_payloads = []
for chunk in chunks:
fragments = \
policy.pyeclib_driver.encode(chunk) * policy.ec_duplication_factor
if not fragments:
break
fragment_payloads.append(fragments)
# join up the fragment payloads per node
ec_archive_bodies = [''.join(frags) for frags in zip(*fragment_payloads)]
return ec_archive_bodies
def _create_test_rings(path):
testgz = os.path.join(path, 'object.ring.gz')
intended_replica2part2dev_id = [
[0, 1, 2],
[1, 2, 3],
[2, 3, 0]
]
intended_devs = [
{'id': 0, 'device': 'sda1', 'zone': 0, 'ip': '127.0.0.0',
'port': 6200},
{'id': 1, 'device': 'sda1', 'zone': 1, 'ip': '127.0.0.1',
'port': 6200},
{'id': 2, 'device': 'sda1', 'zone': 2, 'ip': '127.0.0.2',
'port': 6200},
{'id': 3, 'device': 'sda1', 'zone': 4, 'ip': '127.0.0.3',
'port': 6200}
]
intended_part_shift = 30
with closing(GzipFile(testgz, 'wb')) as f:
pickle.dump(
ring.RingData(intended_replica2part2dev_id,
intended_devs, intended_part_shift),
f)
testgz = os.path.join(path, 'object-1.ring.gz')
with closing(GzipFile(testgz, 'wb')) as f:
pickle.dump(
ring.RingData(intended_replica2part2dev_id,
intended_devs, intended_part_shift),
f)
def count_stats(logger, key, metric):
count = 0
for record in logger.log_dict[key]:
log_args, log_kwargs = record
m = log_args[0]
if re.match(metric, m):
count += 1
return count
def get_header_frag_index(self, body):
metadata = self.policy.pyeclib_driver.get_metadata(body)
frag_index = struct.unpack('h', metadata[:2])[0]
return {
'X-Object-Sysmeta-Ec-Frag-Index': frag_index,
}
@patch_policies([StoragePolicy(0, name='zero', is_default=True),
ECStoragePolicy(1, name='one',
ec_type=DEFAULT_TEST_EC_TYPE,
ec_ndata=2, ec_nparity=1)])
class TestGlobalSetupObjectReconstructor(unittest.TestCase):
# Tests for reconstructor using real objects in test partition directories.
legacy_durable = False
def setUp(self):
self.testdir = tempfile.mkdtemp()
_create_test_rings(self.testdir)
POLICIES[0].object_ring = ring.Ring(self.testdir, ring_name='object')
POLICIES[1].object_ring = ring.Ring(self.testdir, ring_name='object-1')
utils.HASH_PATH_SUFFIX = 'endcap'
utils.HASH_PATH_PREFIX = ''
self.devices = os.path.join(self.testdir, 'node')
os.makedirs(self.devices)
os.mkdir(os.path.join(self.devices, 'sda1'))
self.objects = os.path.join(self.devices, 'sda1',
diskfile.get_data_dir(POLICIES[0]))
self.objects_1 = os.path.join(self.devices, 'sda1',
diskfile.get_data_dir(POLICIES[1]))
os.mkdir(self.objects)
os.mkdir(self.objects_1)
self.parts = {}
self.parts_1 = {}
self.part_nums = ['0', '1', '2']
for part in self.part_nums:
self.parts[part] = os.path.join(self.objects, part)
os.mkdir(self.parts[part])
self.parts_1[part] = os.path.join(self.objects_1, part)
os.mkdir(self.parts_1[part])
self.conf = dict(
swift_dir=self.testdir, devices=self.devices, mount_check='false',
timeout='300', stats_interval='1')
self.logger = debug_logger('test-reconstructor')
self.reconstructor = object_reconstructor.ObjectReconstructor(
self.conf, logger=self.logger)
self.policy = POLICIES[1]
# most of the reconstructor test methods require that there be
# real objects in place, not just part dirs, so we'll create them
# all here....
# part 0: 3C1/hash/xxx#1#d.data <-- job: sync_only - partners (FI 1)
# 061/hash/xxx#1#d.data <-- included in earlier job (FI 1)
# /xxx#2#d.data <-- job: sync_revert to index 2
# part 1: 3C1/hash/xxx#0#d.data <-- job: sync_only - partners (FI 0)
# /xxx#1#d.data <-- job: sync_revert to index 1
# 061/hash/xxx#1#d.data <-- included in earlier job (FI 1)
# part 2: 3C1/hash/xxx#2#d.data <-- job: sync_revert to index 2
# 061/hash/xxx#0#d.data <-- job: sync_revert to index 0
def _create_frag_archives(policy, obj_path, local_id, obj_set):
# we'll create 2 sets of objects in different suffix dirs
# so we cover all the scenarios we want (3 of them)
# 1) part dir with all FI's matching the local node index
# 2) part dir with one local and mix of others
# 3) part dir with no local FI and one or more others
def part_0(set):
if set == 0:
# just the local
return local_id
else:
# one local and all of another
if obj_num == 0:
return local_id
else:
return (local_id + 1) % 3
def part_1(set):
if set == 0:
# one local and all of another
if obj_num == 0:
return local_id
else:
return (local_id + 2) % 3
else:
# just the local node
return local_id
def part_2(set):
# this part is a handoff in our config (always)
# so lets do a set with indices from different nodes
if set == 0:
return (local_id + 1) % 3
else:
return (local_id + 2) % 3
# function dictionary for defining test scenarios base on set #
scenarios = {'0': part_0,
'1': part_1,
'2': part_2}
def _create_df(obj_num, part_num):
self._create_diskfile(
part=part_num, object_name='o' + str(obj_set),
policy=policy, frag_index=scenarios[part_num](obj_set),
timestamp=utils.Timestamp(t))
for part_num in self.part_nums:
# create 3 unique objects per part, each part
# will then have a unique mix of FIs for the
# possible scenarios
for obj_num in range(0, 3):
_create_df(obj_num, part_num)
ips = utils.whataremyips()
for policy in [p for p in POLICIES if p.policy_type == EC_POLICY]:
self.ec_policy = policy
self.ec_obj_ring = self.reconstructor.load_object_ring(
self.ec_policy)
data_dir = diskfile.get_data_dir(self.ec_policy)
for local_dev in [dev for dev in self.ec_obj_ring.devs
if dev and dev['replication_ip'] in ips and
dev['replication_port'] ==
self.reconstructor.port]:
self.ec_local_dev = local_dev
dev_path = os.path.join(self.reconstructor.devices_dir,
self.ec_local_dev['device'])
self.ec_obj_path = os.path.join(dev_path, data_dir)
# create a bunch of FA's to test
t = 1421181937.70054 # time.time()
with mock.patch('swift.obj.diskfile.time') as mock_time:
# since (a) we are using a fixed time here to create
# frags which corresponds to all the hardcoded hashes and
# (b) the EC diskfile will delete its .data file right
# after creating if it has expired, use this horrible hack
# to prevent the reclaim happening
mock_time.time.return_value = 0.0
_create_frag_archives(self.ec_policy, self.ec_obj_path,
self.ec_local_dev['id'], 0)
_create_frag_archives(self.ec_policy, self.ec_obj_path,
self.ec_local_dev['id'], 1)
break
break
def tearDown(self):
rmtree(self.testdir, ignore_errors=1)
def _create_diskfile(self, policy=None, part=0, object_name='o',
frag_index=0, timestamp=None, test_data=None):
policy = policy or self.policy
df_mgr = self.reconstructor._df_router[policy]
df = df_mgr.get_diskfile('sda1', part, 'a', 'c', object_name,
policy=policy)
timestamp = timestamp or utils.Timestamp(time.time())
test_data = test_data or 'test data'
write_diskfile(df, timestamp, data=test_data, frag_index=frag_index,
legacy_durable=self.legacy_durable)
return df
def assert_expected_jobs(self, part_num, jobs):
for job in jobs:
del job['path']
del job['policy']
if 'local_index' in job:
del job['local_index']
job['suffixes'].sort()
expected = []
# part num 0
expected.append(
[{
'sync_to': [{
'index': 2,
'replication_port': 6200,
'zone': 2,
'ip': '127.0.0.2',
'region': 1,
'port': 6200,
'replication_ip': '127.0.0.2',
'device': 'sda1',
'id': 2,
}],
'job_type': object_reconstructor.REVERT,
'suffixes': ['061'],
'partition': 0,
'frag_index': 2,
'device': 'sda1',
'local_dev': {
'replication_port': 6200,
'zone': 1,
'ip': '127.0.0.1',
'region': 1,
'id': 1,
'replication_ip': '127.0.0.1',
'device': 'sda1', 'port': 6200,
},
'hashes': {
'061': {
None: '85b02a5283704292a511078a5c483da5',
2: '0e6e8d48d801dc89fd31904ae3b31229',
1: '0e6e8d48d801dc89fd31904ae3b31229',
},
'3c1': {
None: '85b02a5283704292a511078a5c483da5',
1: '0e6e8d48d801dc89fd31904ae3b31229',
},
},
}, {
'sync_to': [{
'index': 0,
'replication_port': 6200,
'zone': 0,
'ip': '127.0.0.0',
'region': 1,
'port': 6200,
'replication_ip': '127.0.0.0',
'device': 'sda1', 'id': 0,
}, {
'index': 2,
'replication_port': 6200,
'zone': 2,
'ip': '127.0.0.2',
'region': 1,
'port': 6200,
'replication_ip': '127.0.0.2',
'device': 'sda1',
'id': 2,
}],
'job_type': object_reconstructor.SYNC,
'sync_diskfile_builder': self.reconstructor.reconstruct_fa,
'suffixes': ['061', '3c1'],
'partition': 0,
'frag_index': 1,
'device': 'sda1',
'local_dev': {
'replication_port': 6200,
'zone': 1,
'ip': '127.0.0.1',
'region': 1,
'id': 1,
'replication_ip': '127.0.0.1',
'device': 'sda1',
'port': 6200,
},
'hashes':
{
'061': {
None: '85b02a5283704292a511078a5c483da5',
2: '0e6e8d48d801dc89fd31904ae3b31229',
1: '0e6e8d48d801dc89fd31904ae3b31229'
},
'3c1': {
None: '85b02a5283704292a511078a5c483da5',
1: '0e6e8d48d801dc89fd31904ae3b31229',
},
},
}]
)
# part num 1
expected.append(
[{
'sync_to': [{
'index': 1,
'replication_port': 6200,
'zone': 2,
'ip': '127.0.0.2',
'region': 1,
'port': 6200,
'replication_ip': '127.0.0.2',
'device': 'sda1',
'id': 2,
}],
'job_type': object_reconstructor.REVERT,
'suffixes': ['061', '3c1'],
'partition': 1,
'frag_index': 1,
'device': 'sda1',
'local_dev': {
'replication_port': 6200,
'zone': 1,
'ip': '127.0.0.1',
'region': 1,
'id': 1,
'replication_ip': '127.0.0.1',
'device': 'sda1',
'port': 6200,
},
'hashes':
{
'061': {
None: '85b02a5283704292a511078a5c483da5',
1: '0e6e8d48d801dc89fd31904ae3b31229',
},
'3c1': {
0: '0e6e8d48d801dc89fd31904ae3b31229',
None: '85b02a5283704292a511078a5c483da5',
1: '0e6e8d48d801dc89fd31904ae3b31229',
},
},
}, {
'sync_to': [{
'index': 2,
'replication_port': 6200,
'zone': 4,
'ip': '127.0.0.3',
'region': 1,
'port': 6200,
'replication_ip': '127.0.0.3',
'device': 'sda1', 'id': 3,
}, {
'index': 1,
'replication_port': 6200,
'zone': 2,
'ip': '127.0.0.2',
'region': 1,
'port': 6200,
'replication_ip': '127.0.0.2',
'device': 'sda1',
'id': 2,
}],
'job_type': object_reconstructor.SYNC,
'sync_diskfile_builder': self.reconstructor.reconstruct_fa,
'suffixes': ['3c1'],
'partition': 1,
'frag_index': 0,
'device': 'sda1',
'local_dev': {
'replication_port': 6200,
'zone': 1,
'ip': '127.0.0.1',
'region': 1,
'id': 1,
'replication_ip': '127.0.0.1',
'device': 'sda1',
'port': 6200,
},
'hashes': {
'061': {
None: '85b02a5283704292a511078a5c483da5',
1: '0e6e8d48d801dc89fd31904ae3b31229',
},
'3c1': {
0: '0e6e8d48d801dc89fd31904ae3b31229',
None: '85b02a5283704292a511078a5c483da5',
1: '0e6e8d48d801dc89fd31904ae3b31229',
},
},
}]
)
# part num 2
expected.append(
[{
'sync_to': [{
'index': 0,
'replication_port': 6200,
'zone': 2,
'ip': '127.0.0.2',
'region': 1,
'port': 6200,
'replication_ip': '127.0.0.2',
'device': 'sda1', 'id': 2,
}],
'job_type': object_reconstructor.REVERT,
'suffixes': ['061'],
'partition': 2,
'frag_index': 0,
'device': 'sda1',
'local_dev': {
'replication_port': 6200,
'zone': 1,
'ip': '127.0.0.1',
'region': 1,
'id': 1,
'replication_ip': '127.0.0.1',
'device': 'sda1',
'port': 6200,
},
'hashes': {
'061': {
0: '0e6e8d48d801dc89fd31904ae3b31229',
None: '85b02a5283704292a511078a5c483da5'
},
'3c1': {
None: '85b02a5283704292a511078a5c483da5',
2: '0e6e8d48d801dc89fd31904ae3b31229'
},
},
}, {
'sync_to': [{
'index': 2,
'replication_port': 6200,
'zone': 0,
'ip': '127.0.0.0',
'region': 1,
'port': 6200,
'replication_ip': '127.0.0.0',
'device': 'sda1',
'id': 0,
}],
'job_type': object_reconstructor.REVERT,
'suffixes': ['3c1'],
'partition': 2,
'frag_index': 2,
'device': 'sda1',
'local_dev': {
'replication_port': 6200,
'zone': 1,
'ip': '127.0.0.1',
'region': 1,
'id': 1,
'replication_ip': '127.0.0.1',
'device': 'sda1',
'port': 6200
},
'hashes': {
'061': {
0: '0e6e8d48d801dc89fd31904ae3b31229',
None: '85b02a5283704292a511078a5c483da5'
},
'3c1': {
None: '85b02a5283704292a511078a5c483da5',
2: '0e6e8d48d801dc89fd31904ae3b31229'
},
},
}]
)
def check_jobs(part_num):
try:
expected_jobs = expected[int(part_num)]
except (IndexError, ValueError):
self.fail('Unknown part number %r' % part_num)
expected_by_part_frag_index = dict(
((j['partition'], j['frag_index']), j) for j in expected_jobs)
for job in jobs:
job_key = (job['partition'], job['frag_index'])
if job_key in expected_by_part_frag_index:
for k, value in job.items():
expected_value = \
expected_by_part_frag_index[job_key][k]
try:
if isinstance(value, list):
value.sort()
expected_value.sort()
self.assertEqual(value, expected_value)
except AssertionError as e:
extra_info = \
'\n\n... for %r in part num %s job %r' % (
k, part_num, job_key)
raise AssertionError(str(e) + extra_info)
else:
self.fail(
'Unexpected job %r for part num %s - '
'expected jobs where %r' % (
job_key, part_num,
expected_by_part_frag_index.keys()))
for expected_job in expected_jobs:
if expected_job in jobs:
jobs.remove(expected_job)
self.assertFalse(jobs) # that should be all of them
check_jobs(part_num)
def _run_once(self, http_count, extra_devices, override_devices=None):
ring_devs = list(self.policy.object_ring.devs)
for device, parts in extra_devices.items():
device_path = os.path.join(self.devices, device)
os.mkdir(device_path)
for part in range(parts):
os.makedirs(os.path.join(device_path, 'objects-1', str(part)))
# we update the ring to make is_local happy
devs = [dict(d) for d in ring_devs]
for d in devs:
d['device'] = device
self.policy.object_ring.devs.extend(devs)
self.reconstructor.stats_interval = 0
self.process_job = lambda j: sleep(0)
with mocked_http_conn(*[200] * http_count, body=pickle.dumps({})):
with mock_ssync_sender():
self.reconstructor.run_once(devices=override_devices)
def test_run_once(self):
# sda1: 3 is done in setup
extra_devices = {
'sdb1': 4,
'sdc1': 1,
'sdd1': 0,
}
self._run_once(18, extra_devices)
stats_lines = set()
for line in self.logger.get_lines_for_level('info'):
if 'reconstructed in' not in line:
continue
stat_line = line.split('reconstructed', 1)[0].strip()
stats_lines.add(stat_line)
acceptable = set([
'3/8 (37.50%) partitions',
'5/8 (62.50%) partitions',
'8/8 (100.00%) partitions',
])
matched = stats_lines & acceptable
self.assertEqual(matched, acceptable,
'missing some expected acceptable:\n%s' % (
'\n'.join(sorted(acceptable - matched))))
self.assertEqual(self.reconstructor.reconstruction_part_count, 8)
self.assertEqual(self.reconstructor.part_count, 8)
def test_run_once_override_devices(self):
# sda1: 3 is done in setup
extra_devices = {
'sdb1': 4,
'sdc1': 1,
'sdd1': 0,
}
self._run_once(2, extra_devices, 'sdc1')
stats_lines = set()
for line in self.logger.get_lines_for_level('info'):
if 'reconstructed in' not in line:
continue
stat_line = line.split('reconstructed', 1)[0].strip()
stats_lines.add(stat_line)
acceptable = set([
'1/1 (100.00%) partitions',
])
matched = stats_lines & acceptable
self.assertEqual(matched, acceptable,
'missing some expected acceptable:\n%s' % (
'\n'.join(sorted(acceptable - matched))))
self.assertEqual(self.reconstructor.reconstruction_part_count, 1)
self.assertEqual(self.reconstructor.part_count, 1)
def test_get_response(self):
part = self.part_nums[0]
node = POLICIES[1].object_ring.get_part_nodes(int(part))[0]
for stat_code in (200, 400):
with mocked_http_conn(stat_code):
resp = self.reconstructor._get_response(node, part,
path='nada',
headers={},
policy=POLICIES[1])
if resp:
self.assertEqual(resp.status, 200)
else:
self.assertEqual(
len(self.reconstructor.logger.log_dict['warning']), 1)
def test_reconstructor_does_not_log_on_404(self):
part = self.part_nums[0]
node = POLICIES[1].object_ring.get_part_nodes(int(part))[0]
with mocked_http_conn(404):
self.reconstructor._get_response(node, part,
path='some_path',
headers={},
policy=POLICIES[1])
# Make sure that no warnings are emitted for a 404
len_warning_lines = len(self.logger.get_lines_for_level('warning'))
self.assertEqual(len_warning_lines, 0)
def test_reconstructor_skips_bogus_partition_dirs(self):
# A directory in the wrong place shouldn't crash the reconstructor
self.reconstructor._reset_stats()
rmtree(self.objects_1)
os.mkdir(self.objects_1)
os.mkdir(os.path.join(self.objects_1, "burrito"))
jobs = []
for part_info in self.reconstructor.collect_parts():
jobs += self.reconstructor.build_reconstruction_jobs(part_info)
self.assertEqual(len(jobs), 0)
def test_check_ring(self):
testring = tempfile.mkdtemp()
_create_test_rings(testring)
obj_ring = ring.Ring(testring, ring_name='object') # noqa
self.assertTrue(self.reconstructor.check_ring(obj_ring))
orig_check = self.reconstructor.next_check
self.reconstructor.next_check = orig_check - 30
self.assertTrue(self.reconstructor.check_ring(obj_ring))
self.reconstructor.next_check = orig_check
orig_ring_time = obj_ring._mtime
obj_ring._mtime = orig_ring_time - 30
self.assertTrue(self.reconstructor.check_ring(obj_ring))
self.reconstructor.next_check = orig_check - 30
self.assertFalse(self.reconstructor.check_ring(obj_ring))
rmtree(testring, ignore_errors=1)
def test_build_reconstruction_jobs(self):
self.reconstructor._reset_stats()
for part_info in self.reconstructor.collect_parts():
jobs = self.reconstructor.build_reconstruction_jobs(part_info)
self.assertTrue(jobs[0]['job_type'] in
(object_reconstructor.SYNC,
object_reconstructor.REVERT))
self.assert_expected_jobs(part_info['partition'], jobs)
def test_handoffs_only(self):
self.reconstructor.handoffs_only = True
found_job_types = set()
def fake_process_job(job):
# increment failure counter
self.reconstructor.handoffs_remaining += 1
found_job_types.add(job['job_type'])
self.reconstructor.process_job = fake_process_job
# only revert jobs
self.reconstructor.reconstruct()
self.assertEqual(found_job_types, {object_reconstructor.REVERT})
# but failures keep handoffs remaining
msgs = self.reconstructor.logger.get_lines_for_level('info')
self.assertIn('Next pass will continue to revert handoffs', msgs[-1])
self.logger._clear()
found_job_types = set()
def fake_process_job(job):
# success does not increment failure counter
found_job_types.add(job['job_type'])
self.reconstructor.process_job = fake_process_job
# only revert jobs ... but all handoffs cleared out successfully
self.reconstructor.reconstruct()
self.assertEqual(found_job_types, {object_reconstructor.REVERT})
# it's time to turn off handoffs_only
msgs = self.reconstructor.logger.get_lines_for_level('warning')
self.assertIn('You should disable handoffs_only', msgs[-1])
def test_get_partners(self):
# we're going to perform an exhaustive test of every possible
# combination of partitions and nodes in our custom test ring
# format: [dev_id in question, 'part_num',
# [part_nodes for the given part], left id, right id...]
expected_partners = sorted([
(0, '0', [0, 1, 2], 2, 1), (0, '2', [2, 3, 0], 3, 2),
(1, '0', [0, 1, 2], 0, 2), (1, '1', [1, 2, 3], 3, 2),
(2, '0', [0, 1, 2], 1, 0), (2, '1', [1, 2, 3], 1, 3),
(2, '2', [2, 3, 0], 0, 3), (3, '1', [1, 2, 3], 2, 1),
(3, '2', [2, 3, 0], 2, 0), (0, '0', [0, 1, 2], 2, 1),
(0, '2', [2, 3, 0], 3, 2), (1, '0', [0, 1, 2], 0, 2),
(1, '1', [1, 2, 3], 3, 2), (2, '0', [0, 1, 2], 1, 0),
(2, '1', [1, 2, 3], 1, 3), (2, '2', [2, 3, 0], 0, 3),
(3, '1', [1, 2, 3], 2, 1), (3, '2', [2, 3, 0], 2, 0),
])
got_partners = []
for pol in POLICIES:
obj_ring = pol.object_ring
for part_num in self.part_nums:
part_nodes = obj_ring.get_part_nodes(int(part_num))
primary_ids = [n['id'] for n in part_nodes]
for node in part_nodes:
partners = object_reconstructor._get_partners(
node['index'], part_nodes)
left = partners[0]['id']
right = partners[1]['id']
got_partners.append((
node['id'], part_num, primary_ids, left, right))
self.assertEqual(expected_partners, sorted(got_partners))
def test_collect_parts(self):
self.reconstructor._reset_stats()
parts = []
for part_info in self.reconstructor.collect_parts():
parts.append(part_info['partition'])
self.assertEqual(sorted(parts), [0, 1, 2])
def test_collect_parts_mkdirs_error(self):
def blowup_mkdirs(path):
raise OSError('Ow!')
self.reconstructor._reset_stats()
with mock.patch.object(object_reconstructor, 'mkdirs', blowup_mkdirs):
rmtree(self.objects_1, ignore_errors=1)
parts = []
for part_info in self.reconstructor.collect_parts():
parts.append(part_info['partition'])
error_lines = self.logger.get_lines_for_level('error')
self.assertEqual(len(error_lines), 1)
log_args, log_kwargs = self.logger.log_dict['error'][0]
self.assertEqual(str(log_kwargs['exc_info'][1]), 'Ow!')
def test_removes_zbf(self):
# After running xfs_repair, a partition directory could become a
# zero-byte file. If this happens, the reconstructor should clean it
# up, log something, and move on to the next partition.
# Surprise! Partition dir 1 is actually a zero-byte file.
pol_1_part_1_path = os.path.join(self.objects_1, '1')
rmtree(pol_1_part_1_path)
with open(pol_1_part_1_path, 'w'):
pass
self.assertTrue(os.path.isfile(pol_1_part_1_path)) # sanity check
self.reconstructor.process_job = lambda j: None
self.reconstructor.reconstruct()
self.assertFalse(os.path.exists(pol_1_part_1_path))
warnings = self.reconstructor.logger.get_lines_for_level('warning')
self.assertEqual(1, len(warnings))
self.assertIn(pol_1_part_1_path, warnings[0])
self.assertIn('not a directory', warnings[0].lower())
def test_ignores_status_file(self):
# Following fd86d5a, the auditor will leave status files on each device
# until an audit can complete. The reconstructor should ignore these
@contextmanager
def status_files(*auditor_types):
status_paths = [os.path.join(self.objects_1,
'auditor_status_%s.json' % typ)
for typ in auditor_types]
for status_path in status_paths:
self.assertFalse(os.path.exists(status_path)) # sanity check
with open(status_path, 'w'):
pass
self.assertTrue(os.path.isfile(status_path)) # sanity check
try:
yield status_paths
finally:
for status_path in status_paths:
try:
os.unlink(status_path)
except OSError as e:
if e.errno != 2:
raise
# since our collect_parts job is a generator, that yields directly
# into build_jobs and then spawns it's safe to do the remove_files
# without making reconstructor startup slow
with status_files('ALL', 'ZBF') as status_paths:
self.reconstructor._reset_stats()
for part_info in self.reconstructor.collect_parts():
self.assertNotIn(part_info['part_path'], status_paths)
warnings = self.reconstructor.logger.get_lines_for_level('warning')
self.assertEqual(0, len(warnings))
for status_path in status_paths:
self.assertTrue(os.path.exists(status_path))
def _make_fake_ssync(self, ssync_calls):
class _fake_ssync(object):
def __init__(self, daemon, node, job, suffixes, **kwargs):
# capture context and generate an available_map of objs
context = {}
context['node'] = node
context['job'] = job
context['suffixes'] = suffixes
self.suffixes = suffixes
self.daemon = daemon
self.job = job
hash_gen = self.daemon._df_router[job['policy']].yield_hashes(
self.job['device'], self.job['partition'],
self.job['policy'], self.suffixes,
frag_index=self.job.get('frag_index'))
self.available_map = {}
for path, hash_, timestamps in hash_gen:
self.available_map[hash_] = timestamps
context['available_map'] = self.available_map
ssync_calls.append(context)
def __call__(self, *args, **kwargs):
return True, self.available_map
return _fake_ssync
def test_delete_reverted(self):
# verify reconstructor deletes reverted frag indexes after ssync'ing
def visit_obj_dirs(context):
for suff in context['suffixes']:
suff_dir = os.path.join(
context['job']['path'], suff)
for root, dirs, files in os.walk(suff_dir):
for d in dirs:
dirpath = os.path.join(root, d)
files = os.listdir(dirpath)
yield dirpath, files
n_files = n_files_after = 0
# run reconstructor with delete function mocked out to check calls
ssync_calls = []
delete_func =\
'swift.obj.reconstructor.ObjectReconstructor.delete_reverted_objs'
with mock.patch('swift.obj.reconstructor.ssync_sender',
self._make_fake_ssync(ssync_calls)):
with mocked_http_conn(*[200] * 12, body=pickle.dumps({})):
with mock.patch(delete_func) as mock_delete:
self.reconstructor.reconstruct()
expected_calls = []
for context in ssync_calls:
if context['job']['job_type'] == REVERT:
for dirpath, files in visit_obj_dirs(context):
# sanity check - expect some files to be in dir,
# may not be for the reverted frag index
self.assertTrue(files)
n_files += len(files)
expected_calls.append(mock.call(context['job'],
context['available_map'],
context['node']['index']))
mock_delete.assert_has_calls(expected_calls, any_order=True)
ssync_calls = []
with mock.patch('swift.obj.reconstructor.ssync_sender',
self._make_fake_ssync(ssync_calls)):
with mocked_http_conn(*[200] * 12, body=pickle.dumps({})):
self.reconstructor.reconstruct()
for context in ssync_calls:
if context['job']['job_type'] == REVERT:
data_file_tail = ('#%s.data'
% context['node']['index'])
for dirpath, files in visit_obj_dirs(context):
n_files_after += len(files)
for filename in files:
self.assertFalse(
filename.endswith(data_file_tail))
# sanity check that some files should were deleted
self.assertTrue(n_files > n_files_after)
def test_get_part_jobs(self):
# yeah, this test code expects a specific setup
self.assertEqual(len(self.part_nums), 3)
# OK, at this point we should have 4 loaded parts with one
jobs = []
for partition in os.listdir(self.ec_obj_path):
part_path = os.path.join(self.ec_obj_path, partition)
jobs = self.reconstructor._get_part_jobs(
self.ec_local_dev, part_path, int(partition), self.ec_policy)
self.assert_expected_jobs(partition, jobs)
def assertStatCount(self, stat_method, stat_prefix, expected_count):
count = count_stats(self.logger, stat_method, stat_prefix)
msg = 'expected %s != %s for %s %s' % (
expected_count, count, stat_method, stat_prefix)
self.assertEqual(expected_count, count, msg)
def test_delete_partition(self):
# part 2 is predefined to have all revert jobs
part_path = os.path.join(self.objects_1, '2')
self.assertTrue(os.access(part_path, os.F_OK))
ssync_calls = []
status = [200] * 2
body = pickle.dumps({})
with mocked_http_conn(*status, body=body) as request_log:
with mock.patch('swift.obj.reconstructor.ssync_sender',
self._make_fake_ssync(ssync_calls)):
self.reconstructor.reconstruct(override_partitions=[2])
expected_repliate_calls = set([
('127.0.0.0', '/sda1/2/3c1'),
('127.0.0.2', '/sda1/2/061'),
])
found_calls = set((r['ip'], r['path'])
for r in request_log.requests)
self.assertEqual(expected_repliate_calls, found_calls)
expected_ssync_calls = sorted([
('127.0.0.0', REVERT, 2, ['3c1']),
('127.0.0.2', REVERT, 2, ['061']),
])
self.assertEqual(expected_ssync_calls, sorted((
c['node']['ip'],
c['job']['job_type'],
c['job']['partition'],
c['suffixes'],
) for c in ssync_calls))
expected_stats = {
('increment', 'partition.delete.count.'): 2,
('timing_since', 'partition.delete.timing'): 2,
}
for stat_key, expected in expected_stats.items():
stat_method, stat_prefix = stat_key
self.assertStatCount(stat_method, stat_prefix, expected)
# part 2 should be totally empty
policy = POLICIES[1]
hash_gen = self.reconstructor._df_router[policy].yield_hashes(
'sda1', '2', policy)
for path, hash_, ts in hash_gen:
self.fail('found %s with %s in %s' % (hash_, ts, path))
# but the partition directory and hashes pkl still exist
self.assertTrue(os.access(part_path, os.F_OK))
hashes_path = os.path.join(self.objects_1, '2', diskfile.HASH_FILE)
self.assertTrue(os.access(hashes_path, os.F_OK))
# ... but on next pass
ssync_calls = []
with mocked_http_conn() as request_log:
with mock.patch('swift.obj.reconstructor.ssync_sender',
self._make_fake_ssync(ssync_calls)):
self.reconstructor.reconstruct(override_partitions=[2])
# reconstruct won't generate any replicate or ssync_calls
self.assertFalse(request_log.requests)
self.assertFalse(ssync_calls)
# and the partition will get removed!
self.assertFalse(os.access(part_path, os.F_OK))
def test_process_job_all_success(self):
self.reconstructor._reset_stats()
with mock_ssync_sender():
with mocked_http_conn(*[200] * 12, body=pickle.dumps({})):
found_jobs = []
for part_info in self.reconstructor.collect_parts():
jobs = self.reconstructor.build_reconstruction_jobs(
part_info)
found_jobs.extend(jobs)
for job in jobs:
self.logger._clear()
node_count = len(job['sync_to'])
self.reconstructor.process_job(job)
if job['job_type'] == object_reconstructor.REVERT:
self.assertEqual(0, count_stats(
self.logger, 'update_stats', 'suffix.hashes'))
else:
self.assertStatCount('update_stats',
'suffix.hashes',
node_count)
self.assertEqual(node_count, count_stats(
self.logger, 'update_stats', 'suffix.hashes'))
self.assertEqual(node_count, count_stats(
self.logger, 'update_stats', 'suffix.syncs'))
self.assertFalse('error' in
self.logger.all_log_lines())
self.assertEqual(self.reconstructor.suffix_sync, 8)
self.assertEqual(self.reconstructor.suffix_count, 8)
self.assertEqual(len(found_jobs), 6)
def test_process_job_all_insufficient_storage(self):
self.reconstructor._reset_stats()
with mock_ssync_sender():
with mocked_http_conn(*[507] * 8):
found_jobs = []
for part_info in self.reconstructor.collect_parts():
jobs = self.reconstructor.build_reconstruction_jobs(
part_info)
found_jobs.extend(jobs)
for job in jobs:
self.logger._clear()
self.reconstructor.process_job(job)
for line in self.logger.get_lines_for_level('error'):
self.assertTrue('responded as unmounted' in line)
self.assertEqual(0, count_stats(
self.logger, 'update_stats', 'suffix.hashes'))
self.assertEqual(0, count_stats(
self.logger, 'update_stats', 'suffix.syncs'))
self.assertEqual(self.reconstructor.suffix_sync, 0)
self.assertEqual(self.reconstructor.suffix_count, 0)
self.assertEqual(len(found_jobs), 6)
def test_process_job_all_client_error(self):
self.reconstructor._reset_stats()
with mock_ssync_sender():
with mocked_http_conn(*[400] * 8):
found_jobs = []
for part_info in self.reconstructor.collect_parts():
jobs = self.reconstructor.build_reconstruction_jobs(
part_info)
found_jobs.extend(jobs)
for job in jobs:
self.logger._clear()
self.reconstructor.process_job(job)
for line in self.logger.get_lines_for_level('error'):
self.assertTrue('Invalid response 400' in line)
self.assertEqual(0, count_stats(
self.logger, 'update_stats', 'suffix.hashes'))
self.assertEqual(0, count_stats(
self.logger, 'update_stats', 'suffix.syncs'))
self.assertEqual(self.reconstructor.suffix_sync, 0)
self.assertEqual(self.reconstructor.suffix_count, 0)
self.assertEqual(len(found_jobs), 6)
def test_process_job_all_timeout(self):
self.reconstructor._reset_stats()
with mock_ssync_sender(), mocked_http_conn(*[Timeout()] * 8):
found_jobs = []
for part_info in self.reconstructor.collect_parts():
jobs = self.reconstructor.build_reconstruction_jobs(
part_info)
found_jobs.extend(jobs)
for job in jobs:
self.logger._clear()
self.reconstructor.process_job(job)
for line in self.logger.get_lines_for_level('error'):
self.assertTrue('Timeout (Nones)' in line)
self.assertStatCount(
'update_stats', 'suffix.hashes', 0)
self.assertStatCount(
'update_stats', 'suffix.syncs', 0)
self.assertEqual(self.reconstructor.suffix_sync, 0)
self.assertEqual(self.reconstructor.suffix_count, 0)
self.assertEqual(len(found_jobs), 6)
class TestGlobalSetupObjectReconstructorLegacyDurable(
TestGlobalSetupObjectReconstructor):
# Tests for reconstructor using real objects in test partition directories.
legacy_durable = True
@patch_policies(with_ec_default=True)
class TestObjectReconstructor(unittest.TestCase):
def setUp(self):
self.policy = POLICIES.default
self.policy.object_ring._rtime = time.time() + 3600
self.testdir = tempfile.mkdtemp()
self.devices = os.path.join(self.testdir, 'devices')
self.local_dev = self.policy.object_ring.devs[0]
self.ip = self.local_dev['replication_ip']
self.port = self.local_dev['replication_port']
self.conf = {
'devices': self.devices,
'mount_check': False,
'bind_ip': self.ip,
'bind_port': self.port,
}
self.logger = debug_logger('object-reconstructor')
self._configure_reconstructor()
self.policy.object_ring.max_more_nodes = \
self.policy.object_ring.replicas
self.ts_iter = make_timestamp_iter()
self.fabricated_ring = FabricatedRing(replicas=14, devices=28)
def _configure_reconstructor(self, **kwargs):
self.conf.update(kwargs)
self.reconstructor = object_reconstructor.ObjectReconstructor(
self.conf, logger=self.logger)
self.reconstructor._reset_stats()
# some tests bypass build_reconstruction_jobs and go to process_job
# directly, so you end up with a /0 when you try to show the
# percentage of complete jobs as ratio of the total job count
self.reconstructor.job_count = 1
# if we ever let a test through without properly patching the
# REPLICATE and SSYNC calls - let's fail sort fast-ish
self.reconstructor.lockup_timeout = 3
def tearDown(self):
self.reconstructor._reset_stats()
self.reconstructor.stats_line()
shutil.rmtree(self.testdir)
def ts(self):
return next(self.ts_iter)
def test_handoffs_only_default(self):
# sanity neither option added to default conf
self.conf.pop('handoffs_only', None)
self.conf.pop('handoffs_first', None)
self.reconstructor = object_reconstructor.ObjectReconstructor(
self.conf, logger=self.logger)
self.assertFalse(self.reconstructor.handoffs_only)
def test_handoffs_first_enables_handoffs_only(self):
self.conf.pop('handoffs_only', None) # sanity
self.conf['handoffs_first'] = True
self.reconstructor = object_reconstructor.ObjectReconstructor(
self.conf, logger=self.logger)
self.assertTrue(self.reconstructor.handoffs_only)
warnings = self.logger.get_lines_for_level('warning')
expected = [
'The handoffs_first option is deprecated in favor '
'of handoffs_only. This option may be ignored in a '
'future release.',
'Handoff only mode is not intended for normal operation, '
'use handoffs_only with care.',
]
self.assertEqual(expected, warnings)
def test_handoffs_only_ignores_handoffs_first(self):
self.conf['handoffs_first'] = True
self.conf['handoffs_only'] = False
self.reconstructor = object_reconstructor.ObjectReconstructor(
self.conf, logger=self.logger)
self.assertFalse(self.reconstructor.handoffs_only)
warnings = self.logger.get_lines_for_level('warning')
expected = [
'The handoffs_first option is deprecated in favor of '
'handoffs_only. This option may be ignored in a future release.',
'Ignored handoffs_first option in favor of handoffs_only.',
]
self.assertEqual(expected, warnings)
def test_handoffs_only_enabled(self):
self.conf.pop('handoffs_first', None) # sanity
self.conf['handoffs_only'] = True
self.reconstructor = object_reconstructor.ObjectReconstructor(
self.conf, logger=self.logger)
self.assertTrue(self.reconstructor.handoffs_only)
warnings = self.logger.get_lines_for_level('warning')
expected = [
'Handoff only mode is not intended for normal operation, '
'use handoffs_only with care.',
]
self.assertEqual(expected, warnings)
def test_two_ec_policies(self):
with patch_policies([
StoragePolicy(0, name='zero', is_deprecated=True),
ECStoragePolicy(1, name='one', is_default=True,
ec_type=DEFAULT_TEST_EC_TYPE,
ec_ndata=4, ec_nparity=3),
ECStoragePolicy(2, name='two',
ec_type=DEFAULT_TEST_EC_TYPE,
ec_ndata=8, ec_nparity=2)],
fake_ring_args=[
{}, {'replicas': 7}, {'replicas': 10}]):
self._configure_reconstructor()
jobs = []
def process_job(job):
jobs.append(job)
self.reconstructor.process_job = process_job
os.makedirs(os.path.join(self.devices, 'sda', 'objects-1', '0'))
self.reconstructor.run_once()
self.assertEqual(1, len(jobs))
def test_collect_parts_skips_non_ec_policy_and_device(self):
stub_parts = (371, 78, 419, 834)
for policy in POLICIES:
datadir = diskfile.get_data_dir(policy)
for part in stub_parts:
utils.mkdirs(os.path.join(
self.devices, self.local_dev['device'],
datadir, str(part)))
part_infos = list(self.reconstructor.collect_parts())
found_parts = sorted(int(p['partition']) for p in part_infos)
self.assertEqual(found_parts, sorted(stub_parts))
for part_info in part_infos:
self.assertEqual(part_info['local_dev'], self.local_dev)
self.assertEqual(part_info['policy'], self.policy)
self.assertEqual(part_info['part_path'],
os.path.join(self.devices,
self.local_dev['device'],
diskfile.get_data_dir(self.policy),
str(part_info['partition'])))
def test_collect_parts_skips_non_local_devs_servers_per_port(self):
self._configure_reconstructor(devices=self.devices, mount_check=False,
bind_ip=self.ip, bind_port=self.port,
servers_per_port=2)
device_parts = {
'sda': (374,),
'sdb': (179, 807), # w/one-serv-per-port, same IP alone is local
'sdc': (363, 468, 843),
'sdd': (912,), # "not local" via different IP
}
for policy in POLICIES:
datadir = diskfile.get_data_dir(policy)
for dev, parts in device_parts.items():
for part in parts:
utils.mkdirs(os.path.join(
self.devices, dev,
datadir, str(part)))
# we're only going to add sda and sdc into the ring
local_devs = ('sda', 'sdb', 'sdc')
stub_ring_devs = [{
'device': dev,
'replication_ip': self.ip,
'replication_port': self.port + 1 if dev == 'sdb' else self.port,
} for dev in local_devs]
stub_ring_devs.append({
'device': 'sdd',
'replication_ip': '127.0.0.88', # not local via IP
'replication_port': self.port,
})
self.reconstructor.bind_ip = '0.0.0.0' # use whataremyips
with mock.patch('swift.obj.reconstructor.whataremyips',
return_value=[self.ip]), \
mock.patch.object(self.policy.object_ring, '_devs',
new=stub_ring_devs):
part_infos = list(self.reconstructor.collect_parts())
found_parts = sorted(int(p['partition']) for p in part_infos)
expected_parts = sorted(itertools.chain(
*(device_parts[d] for d in local_devs)))
self.assertEqual(found_parts, expected_parts)
for part_info in part_infos:
self.assertEqual(part_info['policy'], self.policy)
self.assertTrue(part_info['local_dev'] in stub_ring_devs)
dev = part_info['local_dev']
self.assertEqual(part_info['part_path'],
os.path.join(self.devices,
dev['device'],
diskfile.get_data_dir(self.policy),
str(part_info['partition'])))
def test_collect_parts_multi_device_skips_non_non_local_devs(self):
device_parts = {
'sda': (374,),
'sdb': (179, 807), # "not local" via different port
'sdc': (363, 468, 843),
'sdd': (912,), # "not local" via different IP
}
for policy in POLICIES:
datadir = diskfile.get_data_dir(policy)
for dev, parts in device_parts.items():
for part in parts:
utils.mkdirs(os.path.join(
self.devices, dev,
datadir, str(part)))
# we're only going to add sda and sdc into the ring
local_devs = ('sda', 'sdc')
stub_ring_devs = [{
'device': dev,
'replication_ip': self.ip,
'replication_port': self.port,
} for dev in local_devs]
stub_ring_devs.append({
'device': 'sdb',
'replication_ip': self.ip,
'replication_port': self.port + 1, # not local via port
})
stub_ring_devs.append({
'device': 'sdd',
'replication_ip': '127.0.0.88', # not local via IP
'replication_port': self.port,
})
self.reconstructor.bind_ip = '0.0.0.0' # use whataremyips
with mock.patch('swift.obj.reconstructor.whataremyips',
return_value=[self.ip]), \
mock.patch.object(self.policy.object_ring, '_devs',
new=stub_ring_devs):
part_infos = list(self.reconstructor.collect_parts())
found_parts = sorted(int(p['partition']) for p in part_infos)
expected_parts = sorted(itertools.chain(
*(device_parts[d] for d in local_devs)))
self.assertEqual(found_parts, expected_parts)
for part_info in part_infos:
self.assertEqual(part_info['policy'], self.policy)
self.assertTrue(part_info['local_dev'] in stub_ring_devs)
dev = part_info['local_dev']
self.assertEqual(part_info['part_path'],
os.path.join(self.devices,
dev['device'],
diskfile.get_data_dir(self.policy),
str(part_info['partition'])))
def test_collect_parts_multi_device_skips_non_ring_devices(self):
device_parts = {
'sda': (374,),
'sdc': (363, 468, 843),
}
for policy in POLICIES:
datadir = diskfile.get_data_dir(policy)
for dev, parts in device_parts.items():
for part in parts:
utils.mkdirs(os.path.join(
self.devices, dev,
datadir, str(part)))
# we're only going to add sda and sdc into the ring
local_devs = ('sda', 'sdc')
stub_ring_devs = [{
'device': dev,
'replication_ip': self.ip,
'replication_port': self.port,
} for dev in local_devs]
self.reconstructor.bind_ip = '0.0.0.0' # use whataremyips
with mock.patch('swift.obj.reconstructor.whataremyips',
return_value=[self.ip]), \
mock.patch.object(self.policy.object_ring, '_devs',
new=stub_ring_devs):
part_infos = list(self.reconstructor.collect_parts())
found_parts = sorted(int(p['partition']) for p in part_infos)
expected_parts = sorted(itertools.chain(
*(device_parts[d] for d in local_devs)))
self.assertEqual(found_parts, expected_parts)
for part_info in part_infos:
self.assertEqual(part_info['policy'], self.policy)
self.assertTrue(part_info['local_dev'] in stub_ring_devs)
dev = part_info['local_dev']
self.assertEqual(part_info['part_path'],
os.path.join(self.devices,
dev['device'],
diskfile.get_data_dir(self.policy),
str(part_info['partition'])))
def test_collect_parts_mount_check(self):
# each device has one part in it
local_devs = ('sda', 'sdb')
for i, dev in enumerate(local_devs):
datadir = diskfile.get_data_dir(self.policy)
utils.mkdirs(os.path.join(
self.devices, dev, datadir, str(i)))
stub_ring_devs = [{
'device': dev,
'replication_ip': self.ip,
'replication_port': self.port
} for dev in local_devs]
with mock.patch('swift.obj.reconstructor.whataremyips',
return_value=[self.ip]), \
mock.patch.object(self.policy.object_ring, '_devs',
new=stub_ring_devs):
part_infos = list(self.reconstructor.collect_parts())
self.assertEqual(2, len(part_infos)) # sanity
self.assertEqual(set(int(p['partition']) for p in part_infos),
set([0, 1]))
paths = []
def fake_check_mount(devices, device):
paths.append(os.path.join(devices, device))
return False
with mock.patch('swift.obj.reconstructor.whataremyips',
return_value=[self.ip]), \
mock.patch.object(self.policy.object_ring, '_devs',
new=stub_ring_devs), \
mock.patch('swift.obj.diskfile.check_mount',
fake_check_mount):
part_infos = list(self.reconstructor.collect_parts())
self.assertEqual(2, len(part_infos)) # sanity, same jobs
self.assertEqual(set(int(p['partition']) for p in part_infos),
set([0, 1]))
# ... because ismount was not called
self.assertEqual(paths, [])
# ... now with mount check
self._configure_reconstructor(mount_check=True)
self.assertTrue(self.reconstructor.mount_check)
for policy in POLICIES:
self.assertTrue(self.reconstructor._df_router[policy].mount_check)
with mock.patch('swift.obj.reconstructor.whataremyips',
return_value=[self.ip]), \
mock.patch.object(self.policy.object_ring, '_devs',
new=stub_ring_devs), \
mock.patch('swift.obj.diskfile.check_mount',
fake_check_mount):
part_infos = list(self.reconstructor.collect_parts())
self.assertEqual([], part_infos) # sanity, no jobs
# ... because fake_ismount returned False for both paths
self.assertEqual(set(paths), set([
os.path.join(self.devices, dev) for dev in local_devs]))
def fake_check_mount(devices, device):
path = os.path.join(devices, device)
if path.endswith('sda'):
return True
else:
return False
with mock.patch('swift.obj.reconstructor.whataremyips',
return_value=[self.ip]), \
mock.patch.object(self.policy.object_ring, '_devs',
new=stub_ring_devs), \
mock.patch('swift.obj.diskfile.check_mount',
fake_check_mount):
part_infos = list(self.reconstructor.collect_parts())
self.assertEqual(1, len(part_infos)) # only sda picked up (part 0)
self.assertEqual(part_infos[0]['partition'], 0)
def test_collect_parts_cleans_tmp(self):
local_devs = ('sda', 'sdc')
stub_ring_devs = [{
'device': dev,
'replication_ip': self.ip,
'replication_port': self.port
} for dev in local_devs]
for device in local_devs:
utils.mkdirs(os.path.join(self.devices, device))
fake_unlink = mock.MagicMock()
self._configure_reconstructor(reclaim_age=1000)
now = time.time()
with mock.patch('swift.obj.reconstructor.whataremyips',
return_value=[self.ip]), \
mock.patch('swift.obj.reconstructor.time.time',
return_value=now), \
mock.patch.object(self.policy.object_ring, '_devs',
new=stub_ring_devs), \
mock.patch('swift.obj.reconstructor.unlink_older_than',
fake_unlink):
self.assertEqual([], list(self.reconstructor.collect_parts()))
# each local device hash unlink_older_than called on it,
# with now - self.reclaim_age
tmpdir = diskfile.get_tmp_dir(self.policy)
expected = now - 1000
self.assertEqual(fake_unlink.mock_calls, [
mock.call(os.path.join(self.devices, dev, tmpdir), expected)
for dev in local_devs])
def test_collect_parts_creates_datadir(self):
# create just the device path
dev_path = os.path.join(self.devices, self.local_dev['device'])
utils.mkdirs(dev_path)
with mock.patch('swift.obj.reconstructor.whataremyips',
return_value=[self.ip]):
self.assertEqual([], list(self.reconstructor.collect_parts()))
datadir_path = os.path.join(dev_path,
diskfile.get_data_dir(self.policy))
self.assertTrue(os.path.exists(datadir_path))
def test_collect_parts_creates_datadir_error(self):
# create just the device path
datadir_path = os.path.join(self.devices, self.local_dev['device'],
diskfile.get_data_dir(self.policy))
utils.mkdirs(os.path.dirname(datadir_path))
with mock.patch('swift.obj.reconstructor.whataremyips',
return_value=[self.ip]), \
mock.patch('swift.obj.reconstructor.mkdirs',
side_effect=OSError('kaboom!')):
self.assertEqual([], list(self.reconstructor.collect_parts()))
error_lines = self.logger.get_lines_for_level('error')
self.assertEqual(len(error_lines), 1)
line = error_lines[0]
self.assertTrue('Unable to create' in line)
self.assertTrue(datadir_path in line)
def test_collect_parts_skips_invalid_paths(self):
datadir_path = os.path.join(self.devices, self.local_dev['device'],
diskfile.get_data_dir(self.policy))
utils.mkdirs(os.path.dirname(datadir_path))
with open(datadir_path, 'w') as f:
f.write('junk')
with mock.patch('swift.obj.reconstructor.whataremyips',
return_value=[self.ip]):
self.assertEqual([], list(self.reconstructor.collect_parts()))
self.assertTrue(os.path.exists(datadir_path))
error_lines = self.logger.get_lines_for_level('error')
self.assertEqual(len(error_lines), 1)
line = error_lines[0]
self.assertTrue('Unable to list partitions' in line)
self.assertTrue(datadir_path in line)
def test_reconstruct_removes_non_partition_files(self):
# create some junk next to partitions
datadir_path = os.path.join(self.devices, self.local_dev['device'],
diskfile.get_data_dir(self.policy))
num_parts = 3
for part in range(num_parts):
utils.mkdirs(os.path.join(datadir_path, str(part)))
# Add some clearly non-partition dentries
utils.mkdirs(os.path.join(datadir_path, 'not/a/partition'))
for junk_name in ('junk', '1234'):
junk_file = os.path.join(datadir_path, junk_name)
with open(junk_file, 'w') as f:
f.write('junk')
with mock.patch('swift.obj.reconstructor.whataremyips',
return_value=[self.ip]), \
mock.patch('swift.obj.reconstructor.'
'ObjectReconstructor.process_job'):
self.reconstructor.reconstruct()
# all the bad gets cleaned up
errors = []
for junk_name in ('junk', '1234', 'not'):
junk_file = os.path.join(datadir_path, junk_name)
if os.path.exists(junk_file):
errors.append('%s still exists!' % junk_file)
self.assertFalse(errors)
def test_collect_parts_overrides(self):
# setup multiple devices, with multiple parts
device_parts = {
'sda': (374, 843),
'sdb': (179, 807),
'sdc': (363, 468, 843),
}
datadir = diskfile.get_data_dir(self.policy)
for dev, parts in device_parts.items():
for part in parts:
utils.mkdirs(os.path.join(
self.devices, dev,
datadir, str(part)))
# we're only going to add sda and sdc into the ring
local_devs = ('sda', 'sdc')
stub_ring_devs = [{
'device': dev,
'replication_ip': self.ip,
'replication_port': self.port
} for dev in local_devs]
expected = (
({}, [
('sda', 374),
('sda', 843),
('sdc', 363),
('sdc', 468),
('sdc', 843),
]),
({'override_devices': ['sda', 'sdc']}, [
('sda', 374),
('sda', 843),
('sdc', 363),
('sdc', 468),
('sdc', 843),
]),
({'override_devices': ['sdc']}, [
('sdc', 363),
('sdc', 468),
('sdc', 843),
]),
({'override_devices': ['sda']}, [
('sda', 374),
('sda', 843),
]),
({'override_devices': ['sdx']}, []),
({'override_partitions': [374]}, [
('sda', 374),
]),
({'override_partitions': [843]}, [
('sda', 843),
('sdc', 843),
]),
({'override_partitions': [843], 'override_devices': ['sda']}, [
('sda', 843),
]),
)
with mock.patch('swift.obj.reconstructor.whataremyips',
return_value=[self.ip]), \
mock.patch.object(self.policy.object_ring, '_devs',
new=stub_ring_devs):
for kwargs, expected_parts in expected:
part_infos = list(self.reconstructor.collect_parts(**kwargs))
expected_paths = set(
os.path.join(self.devices, dev, datadir, str(part))
for dev, part in expected_parts)
found_paths = set(p['part_path'] for p in part_infos)
msg = 'expected %r != %r for %r' % (
expected_paths, found_paths, kwargs)
self.assertEqual(expected_paths, found_paths, msg)
def test_build_jobs_creates_empty_hashes(self):
part_path = os.path.join(self.devices, self.local_dev['device'],
diskfile.get_data_dir(self.policy), '0')
utils.mkdirs(part_path)
part_info = {
'local_dev': self.local_dev,
'policy': self.policy,
'partition': 0,
'part_path': part_path,
}
jobs = self.reconstructor.build_reconstruction_jobs(part_info)
self.assertEqual(1, len(jobs))
job = jobs[0]
self.assertEqual(job['job_type'], object_reconstructor.SYNC)
self.assertEqual(job['frag_index'], 0)
self.assertEqual(job['suffixes'], [])
self.assertEqual(len(job['sync_to']), 2)
self.assertEqual(job['partition'], 0)
self.assertEqual(job['path'], part_path)
self.assertEqual(job['hashes'], {})
self.assertEqual(job['policy'], self.policy)
self.assertEqual(job['local_dev'], self.local_dev)
self.assertEqual(job['device'], self.local_dev['device'])
hashes_file = os.path.join(part_path,
diskfile.HASH_FILE)
self.assertTrue(os.path.exists(hashes_file))
suffixes = self.reconstructor._get_hashes(
self.policy, part_path, do_listdir=True)
self.assertEqual(suffixes, {})
def test_build_jobs_no_hashes(self):
part_path = os.path.join(self.devices, self.local_dev['device'],
diskfile.get_data_dir(self.policy), '0')
part_info = {
'local_dev': self.local_dev,
'policy': self.policy,
'partition': 0,
'part_path': part_path,
}
stub_hashes = {}
with mock.patch('swift.obj.diskfile.ECDiskFileManager._get_hashes',
return_value=(None, stub_hashes)):
jobs = self.reconstructor.build_reconstruction_jobs(part_info)
self.assertEqual(1, len(jobs))
job = jobs[0]
self.assertEqual(job['job_type'], object_reconstructor.SYNC)
self.assertEqual(job['frag_index'], 0)
self.assertEqual(job['suffixes'], [])
self.assertEqual(len(job['sync_to']), 2)
self.assertEqual(job['partition'], 0)
self.assertEqual(job['path'], part_path)
self.assertEqual(job['hashes'], {})
self.assertEqual(job['policy'], self.policy)
self.assertEqual(job['local_dev'], self.local_dev)
self.assertEqual(job['device'], self.local_dev['device'])
def test_build_jobs_primary(self):
ring = self.policy.object_ring = self.fabricated_ring
# find a partition for which we're a primary
for partition in range(2 ** ring.part_power):
part_nodes = ring.get_part_nodes(partition)
try:
frag_index = [n['id'] for n in part_nodes].index(
self.local_dev['id'])
except ValueError:
pass
else:
break
else:
self.fail("the ring doesn't work: %r" % ring._replica2part2dev_id)
part_path = os.path.join(self.devices, self.local_dev['device'],
diskfile.get_data_dir(self.policy),
str(partition))
part_info = {
'local_dev': self.local_dev,
'policy': self.policy,
'partition': partition,
'part_path': part_path,
}
stub_hashes = {
'123': {frag_index: 'hash', None: 'hash'},
'abc': {frag_index: 'hash', None: 'hash'},
}
with mock.patch('swift.obj.diskfile.ECDiskFileManager._get_hashes',
return_value=(None, stub_hashes)):
jobs = self.reconstructor.build_reconstruction_jobs(part_info)
self.assertEqual(1, len(jobs))
job = jobs[0]
self.assertEqual(job['job_type'], object_reconstructor.SYNC)
self.assertEqual(job['frag_index'], frag_index)
self.assertEqual(job['suffixes'], stub_hashes.keys())
self.assertEqual(set([n['index'] for n in job['sync_to']]),
set([(frag_index + 1) % ring.replicas,
(frag_index - 1) % ring.replicas]))
self.assertEqual(job['partition'], partition)
self.assertEqual(job['path'], part_path)
self.assertEqual(job['hashes'], stub_hashes)
self.assertEqual(job['policy'], self.policy)
self.assertEqual(job['local_dev'], self.local_dev)
self.assertEqual(job['device'], self.local_dev['device'])
def test_build_jobs_handoff(self):
ring = self.policy.object_ring = self.fabricated_ring
# find a partition for which we're a handoff
for partition in range(2 ** ring.part_power):
part_nodes = ring.get_part_nodes(partition)
if self.local_dev['id'] not in [n['id'] for n in part_nodes]:
break
else:
self.fail("the ring doesn't work: %r" % ring._replica2part2dev_id)
part_path = os.path.join(self.devices, self.local_dev['device'],
diskfile.get_data_dir(self.policy),
str(partition))
part_info = {
'local_dev': self.local_dev,
'policy': self.policy,
'partition': partition,
'part_path': part_path,
}
# since this part doesn't belong on us it doesn't matter what
# frag_index we have
frag_index = self.policy.get_backend_index(
random.randint(0, ring.replicas - 1))
stub_hashes = {
'123': {frag_index: 'hash', None: 'hash'},
'abc': {None: 'hash'},
}
with mock.patch('swift.obj.diskfile.ECDiskFileManager._get_hashes',
return_value=(None, stub_hashes)):
jobs = self.reconstructor.build_reconstruction_jobs(part_info)
self.assertEqual(1, len(jobs))
job = jobs[0]
self.assertEqual(job['job_type'], object_reconstructor.REVERT)
self.assertEqual(job['frag_index'], frag_index)
self.assertEqual(sorted(job['suffixes']), sorted(stub_hashes.keys()))
self.assertEqual(
self.policy.ec_duplication_factor, len(job['sync_to']))
# the sync_to node should be different each other
node_ids = set([node['id'] for node in job['sync_to']])
self.assertEqual(len(node_ids),
self.policy.ec_duplication_factor)
# but all the nodes have same backend index to sync
node_indexes = set(
self.policy.get_backend_index(node['index'])
for node in job['sync_to'])
self.assertEqual(1, len(node_indexes))
self.assertEqual(job['sync_to'][0]['index'], frag_index)
self.assertEqual(job['path'], part_path)
self.assertEqual(job['partition'], partition)
self.assertEqual(sorted(job['hashes']), sorted(stub_hashes))
self.assertEqual(job['local_dev'], self.local_dev)
def test_build_jobs_mixed(self):
ring = self.policy.object_ring = self.fabricated_ring
# find a partition for which we're a primary
for partition in range(2 ** ring.part_power):
part_nodes = ring.get_part_nodes(partition)
try:
node_index = [n['id'] for n in part_nodes].index(
self.local_dev['id'])
except ValueError:
pass
else:
break
else:
self.fail("the ring doesn't work: %r" % ring._replica2part2dev_id)
part_path = os.path.join(self.devices, self.local_dev['device'],
diskfile.get_data_dir(self.policy),
str(partition))
part_info = {
'local_dev': self.local_dev,
'policy': self.policy,
'partition': partition,
'part_path': part_path,
}
frag_index = self.policy.get_backend_index(node_index)
other_frag_index = self.policy.get_backend_index(
random.choice(
[f for f in range(ring.replicas) if f != node_index]))
stub_hashes = {
'123': {frag_index: 'hash', None: 'hash'},
'456': {other_frag_index: 'hash', None: 'hash'},
'abc': {None: 'hash'},
}
with mock.patch('swift.obj.diskfile.ECDiskFileManager._get_hashes',
return_value=(None, stub_hashes)):
jobs = self.reconstructor.build_reconstruction_jobs(part_info)
self.assertEqual(2, len(jobs))
sync_jobs, revert_jobs = [], []
for job in jobs:
self.assertEqual(job['partition'], partition)
self.assertEqual(job['path'], part_path)
self.assertEqual(sorted(job['hashes']), sorted(stub_hashes))
self.assertEqual(job['policy'], self.policy)
self.assertEqual(job['local_dev'], self.local_dev)
self.assertEqual(job['device'], self.local_dev['device'])
{
object_reconstructor.SYNC: sync_jobs,
object_reconstructor.REVERT: revert_jobs,
}[job['job_type']].append(job)
self.assertEqual(1, len(sync_jobs))
job = sync_jobs[0]
self.assertEqual(job['frag_index'], frag_index)
self.assertEqual(sorted(job['suffixes']), sorted(['123', 'abc']))
self.assertEqual(len(job['sync_to']), 2)
self.assertEqual(set([n['index'] for n in job['sync_to']]),
set([(frag_index + 1) % ring.replicas,
(frag_index - 1) % ring.replicas]))
self.assertEqual(1, len(revert_jobs))
job = revert_jobs[0]
self.assertEqual(job['frag_index'], other_frag_index)
self.assertEqual(job['suffixes'], ['456'])
self.assertEqual(len(job['sync_to']),
self.policy.ec_duplication_factor)
self.assertEqual(job['sync_to'][0]['index'], other_frag_index)
def test_build_jobs_revert_only_tombstones(self):
ring = self.policy.object_ring = self.fabricated_ring
# find a partition for which we're a handoff
for partition in range(2 ** ring.part_power):
part_nodes = ring.get_part_nodes(partition)
if self.local_dev['id'] not in [n['id'] for n in part_nodes]:
break
else:
self.fail("the ring doesn't work: %r" % ring._replica2part2dev_id)
part_path = os.path.join(self.devices, self.local_dev['device'],
diskfile.get_data_dir(self.policy),
str(partition))
part_info = {
'local_dev': self.local_dev,
'policy': self.policy,
'partition': partition,
'part_path': part_path,
}
# we have no fragment index to hint the jobs where they belong
stub_hashes = {
'123': {None: 'hash'},
'abc': {None: 'hash'},
}
with mock.patch('swift.obj.diskfile.ECDiskFileManager._get_hashes',
return_value=(None, stub_hashes)):
jobs = self.reconstructor.build_reconstruction_jobs(part_info)
self.assertEqual(len(jobs), 1)
job = jobs[0]
expected = {
'job_type': object_reconstructor.REVERT,
'frag_index': None,
'suffixes': stub_hashes.keys(),
'partition': partition,
'path': part_path,
'hashes': stub_hashes,
'policy': self.policy,
'local_dev': self.local_dev,
'device': self.local_dev['device'],
}
self.assertEqual(ring.replica_count, len(part_nodes))
expected_samples = (
(self.policy.ec_n_unique_fragments *
self.policy.ec_duplication_factor) -
self.policy.ec_ndata + 1)
self.assertEqual(len(job['sync_to']), expected_samples)
for k, v in expected.items():
msg = 'expected %s != %s for %s' % (
v, job[k], k)
self.assertEqual(v, job[k], msg)
def test_get_suffix_delta(self):
# different
local_suff = {'123': {None: 'abc', 0: 'def'}}
remote_suff = {'456': {None: 'ghi', 0: 'jkl'}}
local_index = 0
remote_index = 0
suffs = self.reconstructor.get_suffix_delta(local_suff,
local_index,
remote_suff,
remote_index)
self.assertEqual(suffs, ['123'])
# now the same
remote_suff = {'123': {None: 'abc', 0: 'def'}}
suffs = self.reconstructor.get_suffix_delta(local_suff,
local_index,
remote_suff,
remote_index)
self.assertEqual(suffs, [])
# now with a mis-matched None key (missing durable)
remote_suff = {'123': {None: 'ghi', 0: 'def'}}
suffs = self.reconstructor.get_suffix_delta(local_suff,
local_index,
remote_suff,
remote_index)
self.assertEqual(suffs, ['123'])
# now with bogus local index
local_suff = {'123': {None: 'abc', 99: 'def'}}
remote_suff = {'456': {None: 'ghi', 0: 'jkl'}}
suffs = self.reconstructor.get_suffix_delta(local_suff,
local_index,
remote_suff,
remote_index)
self.assertEqual(suffs, ['123'])
def test_process_job_primary_in_sync(self):
replicas = self.policy.object_ring.replicas
frag_index = random.randint(
0, self.policy.ec_n_unique_fragments - 1)
sync_to = [n for n in self.policy.object_ring.devs
if n != self.local_dev][:2]
# setup left and right hashes
stub_hashes = {
'123': {frag_index: 'hash', None: 'hash'},
'abc': {frag_index: 'hash', None: 'hash'},
}
left_index = sync_to[0]['index'] = (frag_index - 1) % replicas
left_hashes = {
'123': {left_index: 'hash', None: 'hash'},
'abc': {left_index: 'hash', None: 'hash'},
}
right_index = sync_to[1]['index'] = (frag_index + 1) % replicas
right_hashes = {
'123': {right_index: 'hash', None: 'hash'},
'abc': {right_index: 'hash', None: 'hash'},
}
partition = 0
part_path = os.path.join(self.devices, self.local_dev['device'],
diskfile.get_data_dir(self.policy),
str(partition))
job = {
'job_type': object_reconstructor.SYNC,
'frag_index': frag_index,
'suffixes': stub_hashes.keys(),
'sync_to': sync_to,
'partition': partition,
'path': part_path,
'hashes': stub_hashes,
'policy': self.policy,
'local_dev': self.local_dev,
}
responses = [(200, pickle.dumps(hashes)) for hashes in (
left_hashes, right_hashes)]
codes, body_iter = zip(*responses)
ssync_calls = []
with mock_ssync_sender(ssync_calls), \
mock.patch('swift.obj.diskfile.ECDiskFileManager._get_hashes',
return_value=(None, stub_hashes)), \
mocked_http_conn(*codes, body_iter=body_iter) as request_log:
self.reconstructor.process_job(job)
expected_suffix_calls = set([
('10.0.0.1', '/sdb/0'),
('10.0.0.2', '/sdc/0'),
])
self.assertEqual(expected_suffix_calls,
set((r['ip'], r['path'])
for r in request_log.requests))
self.assertEqual(len(ssync_calls), 0)
def test_process_job_primary_not_in_sync(self):
replicas = self.policy.object_ring.replicas
frag_index = random.randint(
0, self.policy.ec_n_unique_fragments - 1)
sync_to = [n for n in self.policy.object_ring.devs
if n != self.local_dev][:2]
# setup left and right hashes
stub_hashes = {
'123': {frag_index: 'hash', None: 'hash'},
'abc': {frag_index: 'hash', None: 'hash'},
}
sync_to[0]['index'] = (frag_index - 1) % replicas
left_hashes = {}
sync_to[1]['index'] = (frag_index + 1) % replicas
right_hashes = {}
partition = 0
part_path = os.path.join(self.devices, self.local_dev['device'],
diskfile.get_data_dir(self.policy),
str(partition))
job = {
'job_type': object_reconstructor.SYNC,
'frag_index': frag_index,
'suffixes': stub_hashes.keys(),
'sync_to': sync_to,
'partition': partition,
'path': part_path,
'hashes': stub_hashes,
'policy': self.policy,
'local_dev': self.local_dev,
}
responses = [(200, pickle.dumps(hashes)) for hashes in (
left_hashes, left_hashes, right_hashes, right_hashes)]
codes, body_iter = zip(*responses)
ssync_calls = []
with mock_ssync_sender(ssync_calls), \
mock.patch('swift.obj.diskfile.ECDiskFileManager._get_hashes',
return_value=(None, stub_hashes)), \
mocked_http_conn(*codes, body_iter=body_iter) as request_log:
self.reconstructor.process_job(job)
expected_suffix_calls = set([
('10.0.0.1', '/sdb/0'),
('10.0.0.1', '/sdb/0/123-abc'),
('10.0.0.2', '/sdc/0'),
('10.0.0.2', '/sdc/0/123-abc'),
])
self.assertEqual(expected_suffix_calls,
set((r['ip'], r['path'])
for r in request_log.requests))
expected_ssync_calls = sorted([
('10.0.0.1', 0, set(['123', 'abc'])),
('10.0.0.2', 0, set(['123', 'abc'])),
])
self.assertEqual(expected_ssync_calls, sorted((
c['node']['ip'],
c['job']['partition'],
set(c['suffixes']),
) for c in ssync_calls))
def test_process_job_sync_missing_durable(self):
replicas = self.policy.object_ring.replicas
frag_index = random.randint(
0, self.policy.ec_n_unique_fragments - 1)
sync_to = [n for n in self.policy.object_ring.devs
if n != self.local_dev][:2]
# setup left and right hashes
stub_hashes = {
'123': {frag_index: 'hash', None: 'hash'},
'abc': {frag_index: 'hash', None: 'hash'},
}
# left hand side is in sync
left_index = sync_to[0]['index'] = (frag_index - 1) % replicas
left_hashes = {
'123': {left_index: 'hash', None: 'hash'},
'abc': {left_index: 'hash', None: 'hash'},
}
# right hand side has fragment, but no durable (None key is whack)
right_index = sync_to[1]['index'] = (frag_index + 1) % replicas
right_hashes = {
'123': {right_index: 'hash', None: 'hash'},
'abc': {right_index: 'hash', None: 'different-because-durable'},
}
partition = 0
part_path = os.path.join(self.devices, self.local_dev['device'],
diskfile.get_data_dir(self.policy),
str(partition))
job = {
'job_type': object_reconstructor.SYNC,
'frag_index': frag_index,
'suffixes': stub_hashes.keys(),
'sync_to': sync_to,
'partition': partition,
'path': part_path,
'hashes': stub_hashes,
'policy': self.policy,
'local_dev': self.local_dev,
}
responses = [(200, pickle.dumps(hashes)) for hashes in (
left_hashes, right_hashes, right_hashes)]
codes, body_iter = zip(*responses)
ssync_calls = []
with mock_ssync_sender(ssync_calls), \
mock.patch('swift.obj.diskfile.ECDiskFileManager._get_hashes',
return_value=(None, stub_hashes)), \
mocked_http_conn(*codes, body_iter=body_iter) as request_log:
self.reconstructor.process_job(job)
expected_suffix_calls = set([
('10.0.0.1', '/sdb/0'),
('10.0.0.2', '/sdc/0'),
('10.0.0.2', '/sdc/0/abc'),
])
self.assertEqual(expected_suffix_calls,
set((r['ip'], r['path'])
for r in request_log.requests))
expected_ssync_calls = sorted([
('10.0.0.2', 0, ['abc']),
])
self.assertEqual(expected_ssync_calls, sorted((
c['node']['ip'],
c['job']['partition'],
c['suffixes'],
) for c in ssync_calls))
def test_process_job_primary_some_in_sync(self):
replicas = self.policy.object_ring.replicas
frag_index = random.randint(
0, self.policy.ec_n_unique_fragments - 1)
sync_to = [n for n in self.policy.object_ring.devs
if n != self.local_dev][:2]
# setup left and right hashes
stub_hashes = {
'123': {frag_index: 'hash', None: 'hash'},
'abc': {frag_index: 'hash', None: 'hash'},
}
left_index = sync_to[0]['index'] = (frag_index - 1) % replicas
left_hashes = {
'123': {left_index: 'hashX', None: 'hash'},
'abc': {left_index: 'hash', None: 'hash'},
}
right_index = sync_to[1]['index'] = (frag_index + 1) % replicas
right_hashes = {
'123': {right_index: 'hash', None: 'hash'},
}
partition = 0
part_path = os.path.join(self.devices, self.local_dev['device'],
diskfile.get_data_dir(self.policy),
str(partition))
job = {
'job_type': object_reconstructor.SYNC,
'frag_index': frag_index,
'suffixes': stub_hashes.keys(),
'sync_to': sync_to,
'partition': partition,
'path': part_path,
'hashes': stub_hashes,
'policy': self.policy,
'local_dev': self.local_dev,
}
responses = [(200, pickle.dumps(hashes)) for hashes in (
left_hashes, left_hashes, right_hashes, right_hashes)]
codes, body_iter = zip(*responses)
ssync_calls = []
with mock_ssync_sender(ssync_calls), \
mock.patch('swift.obj.diskfile.ECDiskFileManager._get_hashes',
return_value=(None, stub_hashes)), \
mocked_http_conn(*codes, body_iter=body_iter) as request_log:
self.reconstructor.process_job(job)
expected_suffix_calls = set([
('10.0.0.1', '/sdb/0'),
('10.0.0.1', '/sdb/0/123'),
('10.0.0.2', '/sdc/0'),
('10.0.0.2', '/sdc/0/abc'),
])
self.assertEqual(expected_suffix_calls,
set((r['ip'], r['path'])
for r in request_log.requests))
self.assertEqual(len(ssync_calls), 2)
self.assertEqual(set(c['node']['index'] for c in ssync_calls),
set([left_index, right_index]))
for call in ssync_calls:
if call['node']['index'] == left_index:
self.assertEqual(call['suffixes'], ['123'])
elif call['node']['index'] == right_index:
self.assertEqual(call['suffixes'], ['abc'])
else:
self.fail('unexpected call %r' % call)
def test_process_job_primary_down(self):
partition = 0
frag_index = random.randint(
0, self.policy.ec_n_unique_fragments - 1)
stub_hashes = {
'123': {frag_index: 'hash', None: 'hash'},
'abc': {frag_index: 'hash', None: 'hash'},
}
part_nodes = self.policy.object_ring.get_part_nodes(partition)
sync_to = part_nodes[:2]
part_path = os.path.join(self.devices, self.local_dev['device'],
diskfile.get_data_dir(self.policy),
str(partition))
job = {
'job_type': object_reconstructor.SYNC,
'frag_index': frag_index,
'suffixes': stub_hashes.keys(),
'sync_to': sync_to,
'partition': partition,
'path': part_path,
'hashes': stub_hashes,
'policy': self.policy,
'device': self.local_dev['device'],
'local_dev': self.local_dev,
}
non_local = {'called': 0}
def ssync_response_callback(*args):
# in this test, ssync fails on the first (primary sync_to) node
if non_local['called'] >= 1:
return True, {}
non_local['called'] += 1
return False, {}
expected_suffix_calls = set()
for node in part_nodes[:3]:
expected_suffix_calls.update([
(node['replication_ip'], '/%s/0' % node['device']),
(node['replication_ip'], '/%s/0/123-abc' % node['device']),
])
ssync_calls = []
with mock_ssync_sender(ssync_calls,
response_callback=ssync_response_callback), \
mock.patch('swift.obj.diskfile.ECDiskFileManager._get_hashes',
return_value=(None, stub_hashes)), \
mocked_http_conn(*[200] * len(expected_suffix_calls),
body=pickle.dumps({})) as request_log:
self.reconstructor.process_job(job)
found_suffix_calls = set((r['ip'], r['path'])
for r in request_log.requests)
self.assertEqual(expected_suffix_calls, found_suffix_calls)
expected_ssync_calls = sorted([
('10.0.0.0', 0, set(['123', 'abc'])),
('10.0.0.1', 0, set(['123', 'abc'])),
('10.0.0.2', 0, set(['123', 'abc'])),
])
found_ssync_calls = sorted((
c['node']['ip'],
c['job']['partition'],
set(c['suffixes']),
) for c in ssync_calls)
self.assertEqual(expected_ssync_calls, found_ssync_calls)
def test_process_job_suffix_call_errors(self):
partition = 0
frag_index = random.randint(
0, self.policy.ec_n_unique_fragments - 1)
stub_hashes = {
'123': {frag_index: 'hash', None: 'hash'},
'abc': {frag_index: 'hash', None: 'hash'},
}
part_nodes = self.policy.object_ring.get_part_nodes(partition)
sync_to = part_nodes[:2]
part_path = os.path.join(self.devices, self.local_dev['device'],
diskfile.get_data_dir(self.policy),
str(partition))
job = {
'job_type': object_reconstructor.SYNC,
'frag_index': frag_index,
'suffixes': stub_hashes.keys(),
'sync_to': sync_to,
'partition': partition,
'path': part_path,
'hashes': stub_hashes,
'policy': self.policy,
'device': self.local_dev['device'],
'local_dev': self.local_dev,
}
expected_suffix_calls = set((
node['replication_ip'], '/%s/0' % node['device']
) for node in part_nodes)
possible_errors = [404, 507, Timeout(), Exception('kaboom!')]
codes = [random.choice(possible_errors)
for r in expected_suffix_calls]
ssync_calls = []
with mock_ssync_sender(ssync_calls), \
mock.patch('swift.obj.diskfile.ECDiskFileManager._get_hashes',
return_value=(None, stub_hashes)), \
mocked_http_conn(*codes) as request_log:
self.reconstructor.process_job(job)
found_suffix_calls = set((r['ip'], r['path'])
for r in request_log.requests)
self.assertEqual(expected_suffix_calls, found_suffix_calls)
self.assertFalse(ssync_calls)
def test_process_job_handoff(self):
frag_index = random.randint(
0, self.policy.ec_n_unique_fragments - 1)
sync_to = [random.choice([n for n in self.policy.object_ring.devs
if n != self.local_dev])]
sync_to[0]['index'] = frag_index
stub_hashes = {
'123': {frag_index: 'hash', None: 'hash'},
'abc': {frag_index: 'hash', None: 'hash'},
}
partition = 0
part_path = os.path.join(self.devices, self.local_dev['device'],
diskfile.get_data_dir(self.policy),
str(partition))
job = {
'job_type': object_reconstructor.REVERT,
'frag_index': frag_index,
'suffixes': stub_hashes.keys(),
'sync_to': sync_to,
'partition': partition,
'path': part_path,
'hashes': stub_hashes,
'policy': self.policy,
'local_dev': self.local_dev,
}
ssync_calls = []
with mock_ssync_sender(ssync_calls), \
mock.patch('swift.obj.diskfile.ECDiskFileManager._get_hashes',
return_value=(None, stub_hashes)), \
mocked_http_conn(200, body=pickle.dumps({})) as request_log:
self.reconstructor.process_job(job)
expected_suffix_calls = set([
(sync_to[0]['ip'], '/%s/0/123-abc' % sync_to[0]['device']),
])
found_suffix_calls = set((r['ip'], r['path'])
for r in request_log.requests)
self.assertEqual(expected_suffix_calls, found_suffix_calls)
self.assertEqual(len(ssync_calls), 1)
call = ssync_calls[0]
self.assertEqual(call['node'], sync_to[0])
self.assertEqual(set(call['suffixes']), set(['123', 'abc']))
def test_process_job_will_not_revert_to_handoff(self):
frag_index = random.randint(
0, self.policy.ec_n_unique_fragments - 1)
sync_to = [random.choice([n for n in self.policy.object_ring.devs
if n != self.local_dev])]
sync_to[0]['index'] = frag_index
partition = 0
stub_hashes = {
'123': {frag_index: 'hash', None: 'hash'},
'abc': {frag_index: 'hash', None: 'hash'},
}
part_path = os.path.join(self.devices, self.local_dev['device'],
diskfile.get_data_dir(self.policy),
str(partition))
job = {
'job_type': object_reconstructor.REVERT,
'frag_index': frag_index,
'suffixes': stub_hashes.keys(),
'sync_to': sync_to,
'partition': partition,
'path': part_path,
'hashes': stub_hashes,
'policy': self.policy,
'local_dev': self.local_dev,
}
non_local = {'called': 0}
def ssync_response_callback(*args):
# in this test, ssync fails on the first (primary sync_to) node
if non_local['called'] >= 1:
return True, {}
non_local['called'] += 1
return False, {}
expected_suffix_calls = set([
(node['replication_ip'], '/%s/0/123-abc' % node['device'])
for node in (sync_to[0],)
])
ssync_calls = []
with mock_ssync_sender(ssync_calls,
response_callback=ssync_response_callback), \
mock.patch('swift.obj.diskfile.ECDiskFileManager._get_hashes',
return_value=(None, stub_hashes)), \
mocked_http_conn(*[200] * len(expected_suffix_calls),
body=pickle.dumps({})) as request_log:
self.reconstructor.process_job(job)
found_suffix_calls = set((r['ip'], r['path'])
for r in request_log.requests)
self.assertEqual(expected_suffix_calls, found_suffix_calls)
self.assertEqual(len(ssync_calls), len(expected_suffix_calls))
call = ssync_calls[0]
self.assertEqual(call['node'], sync_to[0])
self.assertEqual(set(call['suffixes']), set(['123', 'abc']))
def test_process_job_revert_is_handoff_fails(self):
frag_index = random.randint(
0, self.policy.ec_n_unique_fragments - 1)
sync_to = [random.choice([n for n in self.policy.object_ring.devs
if n != self.local_dev])]
sync_to[0]['index'] = frag_index
partition = 0
handoff_nodes = list(self.policy.object_ring.get_more_nodes(partition))
stub_hashes = {
'123': {frag_index: 'hash', None: 'hash'},
'abc': {frag_index: 'hash', None: 'hash'},
}
part_path = os.path.join(self.devices, self.local_dev['device'],
diskfile.get_data_dir(self.policy),
str(partition))
job = {
'job_type': object_reconstructor.REVERT,
'frag_index': frag_index,
'suffixes': stub_hashes.keys(),
'sync_to': sync_to,
'partition': partition,
'path': part_path,
'hashes': stub_hashes,
'policy': self.policy,
'local_dev': handoff_nodes[-1],
}
def ssync_response_callback(*args):
# in this test ssync always fails, until we encounter ourselves in
# the list of possible handoff's to sync to, so handoffs_remaining
# should increment
return False, {}
expected_suffix_calls = set([
(sync_to[0]['replication_ip'],
'/%s/0/123-abc' % sync_to[0]['device'])
])
ssync_calls = []
with mock_ssync_sender(ssync_calls,
response_callback=ssync_response_callback), \
mock.patch('swift.obj.diskfile.ECDiskFileManager._get_hashes',
return_value=(None, stub_hashes)), \
mocked_http_conn(*[200] * len(expected_suffix_calls),
body=pickle.dumps({})) as request_log:
self.reconstructor.process_job(job)
found_suffix_calls = set((r['ip'], r['path'])
for r in request_log.requests)
self.assertEqual(expected_suffix_calls, found_suffix_calls)
# this is ssync call to primary (which fails) and nothing else!
self.assertEqual(len(ssync_calls), 1)
call = ssync_calls[0]
self.assertEqual(call['node'], sync_to[0])
self.assertEqual(set(call['suffixes']), set(['123', 'abc']))
self.assertEqual(self.reconstructor.handoffs_remaining, 1)
def test_process_job_revert_cleanup(self):
frag_index = random.randint(
0, self.policy.ec_n_unique_fragments - 1)
sync_to = [random.choice([n for n in self.policy.object_ring.devs
if n != self.local_dev])]
sync_to[0]['index'] = frag_index
partition = 0
part_path = os.path.join(self.devices, self.local_dev['device'],
diskfile.get_data_dir(self.policy),
str(partition))
os.makedirs(part_path)
df_mgr = self.reconstructor._df_router[self.policy]
df = df_mgr.get_diskfile(self.local_dev['device'], partition, 'a',
'c', 'data-obj', policy=self.policy)
ts = self.ts()
with df.create() as writer:
test_data = 'test data'
writer.write(test_data)
metadata = {
'X-Timestamp': ts.internal,
'Content-Length': len(test_data),
'Etag': md5(test_data).hexdigest(),
'X-Object-Sysmeta-Ec-Frag-Index': frag_index,
}
writer.put(metadata)
writer.commit(ts)
ohash = os.path.basename(df._datadir)
suffix = os.path.basename(os.path.dirname(df._datadir))
job = {
'job_type': object_reconstructor.REVERT,
'frag_index': frag_index,
'suffixes': [suffix],
'sync_to': sync_to,
'partition': partition,
'path': part_path,
'hashes': {},
'policy': self.policy,
'local_dev': self.local_dev,
}
def ssync_response_callback(*args):
# success should not increment handoffs_remaining
return True, {ohash: {'ts_data': ts}}
ssync_calls = []
with mock_ssync_sender(ssync_calls,
response_callback=ssync_response_callback):
with mocked_http_conn(200, body=pickle.dumps({})) as request_log:
self.reconstructor.process_job(job)
self.assertEqual([
(sync_to[0]['replication_ip'], '/%s/0/%s' % (
sync_to[0]['device'], suffix)),
], [
(r['ip'], r['path']) for r in request_log.requests
])
# hashpath is still there, but all files have been purged
files = os.listdir(df._datadir)
self.assertFalse(files)
# and more to the point, the next suffix recalc will clean it up
df_mgr = self.reconstructor._df_router[self.policy]
df_mgr.get_hashes(self.local_dev['device'], str(partition), [],
self.policy)
self.assertFalse(os.access(df._datadir, os.F_OK))
self.assertEqual(self.reconstructor.handoffs_remaining, 0)
def test_process_job_revert_cleanup_tombstone(self):
sync_to = [random.choice([n for n in self.policy.object_ring.devs
if n != self.local_dev])]
partition = 0
part_path = os.path.join(self.devices, self.local_dev['device'],
diskfile.get_data_dir(self.policy),
str(partition))
os.makedirs(part_path)
df_mgr = self.reconstructor._df_router[self.policy]
df = df_mgr.get_diskfile(self.local_dev['device'], partition, 'a',
'c', 'data-obj', policy=self.policy)
ts = self.ts()
df.delete(ts)
ohash = os.path.basename(df._datadir)
suffix = os.path.basename(os.path.dirname(df._datadir))
job = {
'job_type': object_reconstructor.REVERT,
'frag_index': None,
'suffixes': [suffix],
'sync_to': sync_to,
'partition': partition,
'path': part_path,
'hashes': {},
'policy': self.policy,
'local_dev': self.local_dev,
}
def ssync_response_callback(*args):
return True, {ohash: {'ts_data': ts}}
ssync_calls = []
with mock_ssync_sender(ssync_calls,
response_callback=ssync_response_callback):
with mocked_http_conn(200, body=pickle.dumps({})) as request_log:
self.reconstructor.process_job(job)
self.assertEqual([
(sync_to[0]['replication_ip'], '/%s/0/%s' % (
sync_to[0]['device'], suffix)),
], [
(r['ip'], r['path']) for r in request_log.requests
])
# hashpath is still there, but it's empty
self.assertEqual([], os.listdir(df._datadir))
def test_reconstruct_fa_no_errors(self):
job = {
'partition': 0,
'policy': self.policy,
}
part_nodes = self.policy.object_ring.get_part_nodes(0)
node = part_nodes[1]
metadata = {
'name': '/a/c/o',
'Content-Length': '0',
'ETag': 'etag',
'X-Timestamp': '1234567890.12345'
}
test_data = ('rebuild' * self.policy.ec_segment_size)[:-777]
etag = md5(test_data).hexdigest()
ec_archive_bodies = make_ec_archive_bodies(self.policy, test_data)
broken_body = ec_archive_bodies.pop(1)
responses = list()
for body in ec_archive_bodies:
headers = get_header_frag_index(self, body)
headers.update({'X-Object-Sysmeta-Ec-Etag': etag})
responses.append((200, body, headers))
# make a hook point at
# swift.obj.reconstructor.ObjectReconstructor._get_response
called_headers = []
orig_func = object_reconstructor.ObjectReconstructor._get_response
def _get_response_hook(self, node, part, path, headers, policy):
called_headers.append(headers)
return orig_func(self, node, part, path, headers, policy)
codes, body_iter, headers = zip(*responses)
get_response_path = \
'swift.obj.reconstructor.ObjectReconstructor._get_response'
with mock.patch(get_response_path, _get_response_hook):
with mocked_http_conn(
*codes, body_iter=body_iter, headers=headers):
df = self.reconstructor.reconstruct_fa(
job, node, metadata)
self.assertEqual(0, df.content_length)
fixed_body = ''.join(df.reader())
self.assertEqual(len(fixed_body), len(broken_body))
self.assertEqual(md5(fixed_body).hexdigest(),
md5(broken_body).hexdigest())
self.assertEqual(len(part_nodes) - 1, len(called_headers))
for called_header in called_headers:
called_header = HeaderKeyDict(called_header)
self.assertIn('Content-Length', called_header)
self.assertEqual(called_header['Content-Length'], '0')
self.assertIn('User-Agent', called_header)
user_agent = called_header['User-Agent']
self.assertTrue(user_agent.startswith('obj-reconstructor'))
self.assertIn('X-Backend-Storage-Policy-Index', called_header)
self.assertEqual(called_header['X-Backend-Storage-Policy-Index'],
self.policy)
self.assertIn('X-Backend-Fragment-Preferences', called_header)
self.assertEqual(
[{'timestamp': '1234567890.12345', 'exclude': []}],
json.loads(called_header['X-Backend-Fragment-Preferences']))
# no error and warning
self.assertFalse(self.logger.get_lines_for_level('error'))
self.assertFalse(self.logger.get_lines_for_level('warning'))
def test_reconstruct_fa_errors_works(self):
job = {
'partition': 0,
'policy': self.policy,
}
part_nodes = self.policy.object_ring.get_part_nodes(0)
node = part_nodes[4]
metadata = {
'name': '/a/c/o',
'Content-Length': 0,
'ETag': 'etag',
'X-Timestamp': '1234567890.12345'
}
test_data = ('rebuild' * self.policy.ec_segment_size)[:-777]
etag = md5(test_data).hexdigest()
ec_archive_bodies = make_ec_archive_bodies(self.policy, test_data)
broken_body = ec_archive_bodies.pop(4)
base_responses = list()
for body in ec_archive_bodies:
headers = get_header_frag_index(self, body)
headers.update({'X-Object-Sysmeta-Ec-Etag': etag})
base_responses.append((200, body, headers))
# since we're already missing a fragment a +2 scheme can only support
# one additional failure at a time
for error in (Timeout(), 404, Exception('kaboom!')):
responses = base_responses
error_index = random.randint(0, len(responses) - 1)
responses[error_index] = (error, '', '')
codes, body_iter, headers_iter = zip(*responses)
with mocked_http_conn(*codes, body_iter=body_iter,
headers=headers_iter):
df = self.reconstructor.reconstruct_fa(
job, node, dict(metadata))
fixed_body = ''.join(df.reader())
self.assertEqual(len(fixed_body), len(broken_body))
self.assertEqual(md5(fixed_body).hexdigest(),
md5(broken_body).hexdigest())
def test_reconstruct_fa_error_with_invalid_header(self):
job = {
'partition': 0,
'policy': self.policy,
}
part_nodes = self.policy.object_ring.get_part_nodes(0)
node = part_nodes[4]
metadata = {
'name': '/a/c/o',
'Content-Length': 0,
'ETag': 'etag',
'X-Timestamp': '1234567890.12345',
}
test_data = ('rebuild' * self.policy.ec_segment_size)[:-777]
etag = md5(test_data).hexdigest()
ec_archive_bodies = make_ec_archive_bodies(self.policy, test_data)
broken_body = ec_archive_bodies.pop(4)
base_responses = list()
for body in ec_archive_bodies:
headers = get_header_frag_index(self, body)
headers.update({'X-Object-Sysmeta-Ec-Etag': etag})
base_responses.append((200, body, headers))
responses = base_responses
# force the test to exercise the handling of this bad response by
# sticking it in near the front
error_index = random.randint(0, self.policy.ec_ndata - 1)
status, body, headers = responses[error_index]
# one esoteric failure is a literal string 'None' in place of the
# X-Object-Sysmeta-EC-Frag-Index
stub_node_job = {'some_keys': 'foo', 'but_not': 'frag_index'}
headers['X-Object-Sysmeta-Ec-Frag-Index'] = str(
stub_node_job.get('frag_index'))
# oops!
self.assertEqual('None',
headers.get('X-Object-Sysmeta-Ec-Frag-Index'))
responses[error_index] = status, body, headers
codes, body_iter, headers_iter = zip(*responses)
with mocked_http_conn(*codes, body_iter=body_iter,
headers=headers_iter):
df = self.reconstructor.reconstruct_fa(
job, node, dict(metadata))
fixed_body = ''.join(df.reader())
# ... this bad request should be treated like any other failure
self.assertEqual(len(fixed_body), len(broken_body))
self.assertEqual(md5(fixed_body).hexdigest(),
md5(broken_body).hexdigest())
def test_reconstruct_parity_fa_with_data_node_failure(self):
job = {
'partition': 0,
'policy': self.policy,
}
part_nodes = self.policy.object_ring.get_part_nodes(0)
node = part_nodes[-4]
metadata = {
'name': '/a/c/o',
'Content-Length': 0,
'ETag': 'etag',
'X-Timestamp': '1234567890.12345'
}
# make up some data (trim some amount to make it unaligned with
# segment size)
test_data = ('rebuild' * self.policy.ec_segment_size)[:-454]
etag = md5(test_data).hexdigest()
ec_archive_bodies = make_ec_archive_bodies(self.policy, test_data)
# the scheme is 10+4, so this gets a parity node
broken_body = ec_archive_bodies.pop(-4)
responses = list()
for body in ec_archive_bodies:
headers = get_header_frag_index(self, body)
headers.update({'X-Object-Sysmeta-Ec-Etag': etag})
responses.append((200, body, headers))
for error in (Timeout(), 404, Exception('kaboom!')):
# grab a data node index
error_index = random.randint(0, self.policy.ec_ndata - 1)
responses[error_index] = (error, '', '')
codes, body_iter, headers_iter = zip(*responses)
with mocked_http_conn(*codes, body_iter=body_iter,
headers=headers_iter):
df = self.reconstructor.reconstruct_fa(
job, node, dict(metadata))
fixed_body = ''.join(df.reader())
self.assertEqual(len(fixed_body), len(broken_body))
self.assertEqual(md5(fixed_body).hexdigest(),
md5(broken_body).hexdigest())
def test_reconstruct_fa_exceptions_fails(self):
job = {
'partition': 0,
'policy': self.policy,
}
part_nodes = self.policy.object_ring.get_part_nodes(0)
node = part_nodes[1]
policy = self.policy
metadata = {
'name': '/a/c/o',
'Content-Length': 0,
'ETag': 'etag',
'X-Timestamp': '1234567890.12345'
}
possible_errors = [Timeout(), Exception('kaboom!')]
codes = [random.choice(possible_errors) for i in
range(policy.object_ring.replicas - 1)]
with mocked_http_conn(*codes):
self.assertRaises(DiskFileError, self.reconstructor.reconstruct_fa,
job, node, metadata)
error_lines = self.logger.get_lines_for_level('error')
# # of replicas failed and one more error log to report no enough
# responses to reconstruct.
self.assertEqual(policy.object_ring.replicas, len(error_lines))
self.assertIn(
'Unable to get enough responses (%s error responses)'
% (policy.object_ring.replicas - 1),
error_lines[-1],
"Unexpected error line found: %s" % error_lines[-1])
# no warning
self.assertFalse(self.logger.get_lines_for_level('warning'))
def test_reconstruct_fa_all_404s_fails(self):
job = {
'partition': 0,
'policy': self.policy,
}
part_nodes = self.policy.object_ring.get_part_nodes(0)
node = part_nodes[1]
policy = self.policy
metadata = {
'name': '/a/c/o',
'Content-Length': 0,
'ETag': 'etag',
'X-Timestamp': '1234567890.12345'
}
codes = [404 for i in range(policy.object_ring.replicas - 1)]
with mocked_http_conn(*codes):
self.assertRaises(DiskFileError, self.reconstructor.reconstruct_fa,
job, node, metadata)
error_lines = self.logger.get_lines_for_level('error')
# only 1 log to report no enough responses
self.assertEqual(1, len(error_lines))
self.assertIn(
'Unable to get enough responses (%s error responses)'
% (policy.object_ring.replicas - 1),
error_lines[0],
"Unexpected error line found: %s" % error_lines[0])
# no warning
self.assertFalse(self.logger.get_lines_for_level('warning'))
def test_reconstruct_fa_with_mixed_old_etag(self):
job = {
'partition': 0,
'policy': self.policy,
}
part_nodes = self.policy.object_ring.get_part_nodes(0)
node = part_nodes[1]
metadata = {
'name': '/a/c/o',
'Content-Length': 0,
'ETag': 'etag',
'X-Timestamp': '1234567890.12345'
}
test_data = ('rebuild' * self.policy.ec_segment_size)[:-777]
etag = md5(test_data).hexdigest()
ec_archive_bodies = make_ec_archive_bodies(self.policy, test_data)
# bad response
broken_body = ec_archive_bodies.pop(1)
ts = (utils.Timestamp(t) for t in itertools.count(int(time.time())))
bad_headers = get_header_frag_index(self, broken_body)
bad_headers.update({
'X-Object-Sysmeta-Ec-Etag': 'some garbage',
'X-Backend-Timestamp': next(ts).internal,
})
# good responses
responses = list()
t1 = next(ts).internal
for body in ec_archive_bodies:
headers = get_header_frag_index(self, body)
headers.update({'X-Object-Sysmeta-Ec-Etag': etag,
'X-Backend-Timestamp': t1})
responses.append((200, body, headers))
# mixed together
error_index = random.randint(0, self.policy.ec_ndata)
error_headers = get_header_frag_index(self,
(responses[error_index])[1])
error_headers.update(bad_headers)
bad_response = (200, '', bad_headers)
responses[error_index] = bad_response
codes, body_iter, headers = zip(*responses)
with mocked_http_conn(*codes, body_iter=body_iter, headers=headers):
df = self.reconstructor.reconstruct_fa(
job, node, metadata)
fixed_body = ''.join(df.reader())
self.assertEqual(len(fixed_body), len(broken_body))
self.assertEqual(md5(fixed_body).hexdigest(),
md5(broken_body).hexdigest())
# no error and warning
self.assertFalse(self.logger.get_lines_for_level('error'))
self.assertFalse(self.logger.get_lines_for_level('warning'))
def test_reconstruct_fa_with_mixed_new_etag(self):
job = {
'partition': 0,
'policy': self.policy,
}
part_nodes = self.policy.object_ring.get_part_nodes(0)
node = part_nodes[1]
metadata = {
'name': '/a/c/o',
'Content-Length': 0,
'ETag': 'etag',
'X-Timestamp': '1234567890.12345'
}
test_data = ('rebuild' * self.policy.ec_segment_size)[:-777]
etag = md5(test_data).hexdigest()
ec_archive_bodies = make_ec_archive_bodies(self.policy, test_data)
broken_body = ec_archive_bodies.pop(1)
ts = (utils.Timestamp(t) for t in itertools.count(int(time.time())))
# good responses
responses = list()
t0 = next(ts).internal
for body in ec_archive_bodies:
headers = get_header_frag_index(self, body)
headers.update({'X-Object-Sysmeta-Ec-Etag': etag,
'X-Backend-Timestamp': t0})
responses.append((200, body, headers))
# sanity check before negative test
codes, body_iter, headers = zip(*responses)
with mocked_http_conn(*codes, body_iter=body_iter, headers=headers):
df = self.reconstructor.reconstruct_fa(
job, node, dict(metadata))
fixed_body = ''.join(df.reader())
self.assertEqual(len(fixed_body), len(broken_body))
self.assertEqual(md5(fixed_body).hexdigest(),
md5(broken_body).hexdigest())
# one newer etag won't spoil the bunch
new_index = random.randint(0, self.policy.ec_ndata - 1)
new_headers = get_header_frag_index(self, (responses[new_index])[1])
new_headers.update({'X-Object-Sysmeta-Ec-Etag': 'some garbage',
'X-Backend-Timestamp': next(ts).internal})
new_response = (200, '', new_headers)
responses[new_index] = new_response
codes, body_iter, headers = zip(*responses)
with mocked_http_conn(*codes, body_iter=body_iter, headers=headers):
df = self.reconstructor.reconstruct_fa(
job, node, dict(metadata))
fixed_body = ''.join(df.reader())
self.assertEqual(len(fixed_body), len(broken_body))
self.assertEqual(md5(fixed_body).hexdigest(),
md5(broken_body).hexdigest())
# no error and warning
self.assertFalse(self.logger.get_lines_for_level('error'))
self.assertFalse(self.logger.get_lines_for_level('warning'))
def test_reconstruct_fa_with_mixed_etag_with_same_timestamp(self):
job = {
'partition': 0,
'policy': self.policy,
}
part_nodes = self.policy.object_ring.get_part_nodes(0)
node = part_nodes[1]
metadata = {
'name': '/a/c/o',
'Content-Length': 0,
'ETag': 'etag',
'X-Timestamp': '1234567890.12345'
}
test_data = ('rebuild' * self.policy.ec_segment_size)[:-777]
etag = md5(test_data).hexdigest()
ec_archive_bodies = make_ec_archive_bodies(self.policy, test_data)
broken_body = ec_archive_bodies.pop(1)
# good responses
responses = list()
for body in ec_archive_bodies:
headers = get_header_frag_index(self, body)
headers.update({'X-Object-Sysmeta-Ec-Etag': etag})
responses.append((200, body, headers))
# sanity check before negative test
codes, body_iter, headers = zip(*responses)
with mocked_http_conn(*codes, body_iter=body_iter, headers=headers):
df = self.reconstructor.reconstruct_fa(
job, node, dict(metadata))
fixed_body = ''.join(df.reader())
self.assertEqual(len(fixed_body), len(broken_body))
self.assertEqual(md5(fixed_body).hexdigest(),
md5(broken_body).hexdigest())
# one newer timestamp but same etag won't spoil the bunch
# N.B. (FIXIME). we choose the first response as garbage, the
# reconstruction fails because all other *correct* frags will be
# assumed as garbage. To avoid the freaky failing set randint
# as [1, self.policy.ec_ndata - 1] to make the first response
# being the correct fragment to reconstruct
new_index = random.randint(1, self.policy.ec_ndata - 1)
new_headers = get_header_frag_index(self, (responses[new_index])[1])
new_headers.update({'X-Object-Sysmeta-Ec-Etag': 'some garbage'})
new_response = (200, '', new_headers)
responses[new_index] = new_response
codes, body_iter, headers = zip(*responses)
with mocked_http_conn(*codes, body_iter=body_iter, headers=headers):
df = self.reconstructor.reconstruct_fa(
job, node, dict(metadata))
fixed_body = ''.join(df.reader())
self.assertEqual(len(fixed_body), len(broken_body))
self.assertEqual(md5(fixed_body).hexdigest(),
md5(broken_body).hexdigest())
# no error and warning
error_log_lines = self.logger.get_lines_for_level('error')
self.assertEqual(1, len(error_log_lines))
self.assertIn(
'Mixed Etag (some garbage, %s) for 10.0.0.1:1001/sdb/0/a/c/o '
'policy#%s frag#1' % (etag, int(self.policy)),
error_log_lines[0])
self.assertFalse(self.logger.get_lines_for_level('warning'))
def test_reconstruct_fa_with_mixed_not_enough_etags_fail(self):
job = {
'partition': 0,
'policy': self.policy,
}
part_nodes = self.policy.object_ring.get_part_nodes(0)
node = part_nodes[1]
metadata = {
'name': '/a/c/o',
'Content-Length': 0,
'ETag': 'etag',
'X-Timestamp': '1234567890.12345'
}
test_data = ('rebuild' * self.policy.ec_segment_size)[:-777]
ec_archive_dict = dict()
ts = (utils.Timestamp(t) for t in itertools.count(int(time.time())))
# create 3 different ec bodies
for i in range(3):
body = test_data[i:]
archive_bodies = make_ec_archive_bodies(self.policy, body)
# pop the index to the destination node
archive_bodies.pop(1)
ec_archive_dict[
(md5(body).hexdigest(), next(ts).internal)] = archive_bodies
responses = list()
# fill out response list by 3 different etag bodies
for etag, ts in itertools.cycle(ec_archive_dict):
body = ec_archive_dict[(etag, ts)].pop(0)
headers = get_header_frag_index(self, body)
headers.update({'X-Object-Sysmeta-Ec-Etag': etag,
'X-Backend-Timestamp': ts})
responses.append((200, body, headers))
if len(responses) >= (self.policy.object_ring.replicas - 1):
break
# sanity, there is 3 different etag and each etag
# doesn't have > ec_k bodies
etag_count = collections.Counter(
[in_resp_headers['X-Object-Sysmeta-Ec-Etag']
for _, _, in_resp_headers in responses])
self.assertEqual(3, len(etag_count))
for etag, count in etag_count.items():
self.assertLess(count, self.policy.ec_ndata)
codes, body_iter, headers = zip(*responses)
with mocked_http_conn(*codes, body_iter=body_iter, headers=headers):
self.assertRaises(DiskFileError, self.reconstructor.reconstruct_fa,
job, node, metadata)
error_lines = self.logger.get_lines_for_level('error')
# only 1 log to report no enough responses
self.assertEqual(3, len(error_lines))
for error_line in error_lines:
for expected_etag, ts in ec_archive_dict:
if expected_etag in error_line:
break
else:
self.fail(
"no expected etag %s found: %s" %
(list(ec_archive_dict), error_line))
expected = 'Unable to get enough responses (%s/10) to ' \
'reconstruct 10.0.0.1:1001/sdb/0/a/c/o policy#0 ' \
'frag#1 with ETag' % etag_count[expected_etag]
self.assertIn(
expected, error_line,
"Unexpected error line found: Expected: %s Got: %s"
% (expected, error_line))
# no warning
self.assertFalse(self.logger.get_lines_for_level('warning'))
def test_reconstruct_fa_finds_itself_does_not_fail(self):
job = {
'partition': 0,
'policy': self.policy,
}
part_nodes = self.policy.object_ring.get_part_nodes(0)
node = part_nodes[1]
metadata = {
'name': '/a/c/o',
'Content-Length': 0,
'ETag': 'etag',
'X-Timestamp': '1234567890.12345'
}
test_data = ('rebuild' * self.policy.ec_segment_size)[:-777]
etag = md5(test_data).hexdigest()
ec_archive_bodies = make_ec_archive_bodies(self.policy, test_data)
# instead of popping the broken body, we'll just leave it in the list
# of responses and take away something else.
broken_body = ec_archive_bodies[1]
ec_archive_bodies = ec_archive_bodies[:-1]
def make_header(body):
headers = get_header_frag_index(self, body)
headers.update({'X-Object-Sysmeta-Ec-Etag': etag})
return headers
responses = [(200, body, make_header(body))
for body in ec_archive_bodies]
codes, body_iter, headers = zip(*responses)
with mocked_http_conn(*codes, body_iter=body_iter, headers=headers):
df = self.reconstructor.reconstruct_fa(
job, node, metadata)
fixed_body = ''.join(df.reader())
self.assertEqual(len(fixed_body), len(broken_body))
self.assertEqual(md5(fixed_body).hexdigest(),
md5(broken_body).hexdigest())
# no error and warning
self.assertFalse(self.logger.get_lines_for_level('error'))
self.assertFalse(self.logger.get_lines_for_level('warning'))
# the found own frag will be reported in the debug message
debug_log_lines = self.logger.get_lines_for_level('debug')
self.assertEqual(2, len(debug_log_lines))
self.assertIn(
'Found existing frag #1 while rebuilding #1 from',
debug_log_lines[0])
# ... and then, it should be skipped in the responses
# N.B. in the future, we could avoid those check because
# definately sending the copy rather than reconstruct will
# save resources. But one more reason, we're avoiding to
# use the dest index fragment even if it goes to reconstruct
# function is that it will cause a bunch of warning log from
# liberasurecode[1].
# 1: https://github.com/openstack/liberasurecode/blob/
# master/src/erasurecode.c#L870
expected_prefix = 'Reconstruct frag #1 with frag indexes'
self.assertIn(expected_prefix, debug_log_lines[1])
got_frag_index_list = json.loads(
debug_log_lines[1][len(expected_prefix):])
self.assertNotIn(1, got_frag_index_list)
def test_reconstruct_fa_finds_duplicate_does_not_fail(self):
job = {
'partition': 0,
'policy': self.policy,
}
part_nodes = self.policy.object_ring.get_part_nodes(0)
node = part_nodes[1]
metadata = {
'name': '/a/c/o',
'Content-Length': 0,
'ETag': 'etag',
'X-Timestamp': '1234567890.12345'
}
test_data = ('rebuild' * self.policy.ec_segment_size)[:-777]
etag = md5(test_data).hexdigest()
ec_archive_bodies = make_ec_archive_bodies(self.policy, test_data)
broken_body = ec_archive_bodies.pop(1)
# add some duplicates
num_duplicates = self.policy.ec_nparity - 1
ec_archive_bodies = (ec_archive_bodies[:num_duplicates] +
ec_archive_bodies)[:-num_duplicates]
def make_header(body):
headers = get_header_frag_index(self, body)
headers.update({'X-Object-Sysmeta-Ec-Etag': etag})
return headers
responses = [(200, body, make_header(body))
for body in ec_archive_bodies]
codes, body_iter, headers = zip(*responses)
with mocked_http_conn(*codes, body_iter=body_iter, headers=headers):
df = self.reconstructor.reconstruct_fa(
job, node, metadata)
fixed_body = ''.join(df.reader())
self.assertEqual(len(fixed_body), len(broken_body))
self.assertEqual(md5(fixed_body).hexdigest(),
md5(broken_body).hexdigest())
# no error and warning
self.assertFalse(self.logger.get_lines_for_level('error'))
self.assertFalse(self.logger.get_lines_for_level('warning'))
debug_log_lines = self.logger.get_lines_for_level('debug')
self.assertEqual(1, len(debug_log_lines))
expected_prefix = 'Reconstruct frag #1 with frag indexes'
self.assertIn(expected_prefix, debug_log_lines[0])
got_frag_index_list = json.loads(
debug_log_lines[0][len(expected_prefix):])
self.assertNotIn(1, got_frag_index_list)
def test_reconstruct_fa_missing_headers(self):
# This is much negative tests asserting when the expected
# headers are missing in the responses to gather fragments
# to reconstruct
job = {
'partition': 0,
'policy': self.policy,
}
part_nodes = self.policy.object_ring.get_part_nodes(0)
node = part_nodes[1]
metadata = {
'name': '/a/c/o',
'Content-Length': 0,
'ETag': 'etag',
'X-Timestamp': '1234567890.12345'
}
test_data = ('rebuild' * self.policy.ec_segment_size)[:-777]
etag = md5(test_data).hexdigest()
ec_archive_bodies = make_ec_archive_bodies(self.policy, test_data)
broken_body = ec_archive_bodies.pop(1)
def make_header(body):
headers = get_header_frag_index(self, body)
headers.update({'X-Object-Sysmeta-Ec-Etag': etag})
return headers
def test_missing_header(missing_header, expected_warning):
self.logger._clear()
responses = [(200, body, make_header(body))
for body in ec_archive_bodies]
responses[0][2].update({missing_header: None})
codes, body_iter, headers = zip(*responses)
with mocked_http_conn(
*codes, body_iter=body_iter, headers=headers):
df = self.reconstructor.reconstruct_fa(
job, node, metadata)
fixed_body = ''.join(df.reader())
self.assertEqual(len(fixed_body), len(broken_body))
self.assertEqual(md5(fixed_body).hexdigest(),
md5(broken_body).hexdigest())
# no errorg
self.assertFalse(self.logger.get_lines_for_level('error'))
# ...but warning for the missing header
warning_log_lines = self.logger.get_lines_for_level('warning')
self.assertEqual(1, len(warning_log_lines))
self.assertIn(expected_warning, warning_log_lines)
message_base = \
"Invalid resp from 10.0.0.0:1000/sda/0/a/c/o policy#0 frag#0"
test_missing_header(
'X-Object-Sysmeta-Ec-Etag',
"%s %s" % (message_base, "(missing Etag)"))
test_missing_header(
'X-Object-Sysmeta-Ec-Frag-Index',
"%s %s" % (message_base,
"(invalid X-Object-Sysmeta-Ec-Frag-Index)"))
test_missing_header(
'X-Backend-Timestamp',
"%s %s" % (message_base, "(missing X-Backend-Timestamp)"))
def test_reconstruct_fa_invalid_frag_index_headers(self):
# This is much negative tests asserting when the expected
# ec frag index header has invalid value in the responses
# to gather fragments to reconstruct
job = {
'partition': 0,
'policy': self.policy,
}
part_nodes = self.policy.object_ring.get_part_nodes(0)
node = part_nodes[1]
metadata = {
'name': '/a/c/o',
'Content-Length': 0,
'ETag': 'etag',
'X-Timestamp': '1234567890.12345'
}
test_data = ('rebuild' * self.policy.ec_segment_size)[:-777]
etag = md5(test_data).hexdigest()
ec_archive_bodies = make_ec_archive_bodies(self.policy, test_data)
broken_body = ec_archive_bodies.pop(1)
def make_header(body):
headers = get_header_frag_index(self, body)
headers.update({'X-Object-Sysmeta-Ec-Etag': etag})
return headers
def test_invalid_ec_frag_index_header(invalid_frag_index):
self.logger._clear()
responses = [(200, body, make_header(body))
for body in ec_archive_bodies]
responses[0][2].update({
'X-Object-Sysmeta-Ec-Frag-Index': invalid_frag_index})
codes, body_iter, headers = zip(*responses)
with mocked_http_conn(
*codes, body_iter=body_iter, headers=headers):
df = self.reconstructor.reconstruct_fa(
job, node, metadata)
fixed_body = ''.join(df.reader())
self.assertEqual(len(fixed_body), len(broken_body))
self.assertEqual(md5(fixed_body).hexdigest(),
md5(broken_body).hexdigest())
# no errorg
self.assertFalse(self.logger.get_lines_for_level('error'))
# ...but warning for the invalid header
warning_log_lines = self.logger.get_lines_for_level('warning')
self.assertEqual(1, len(warning_log_lines))
expected_message = \
"Invalid resp from 10.0.0.0:1000/sda/0/a/c/o " \
"policy#0 frag#0 (invalid X-Object-Sysmeta-Ec-Frag-Index)"
self.assertIn(expected_message, warning_log_lines)
for value in ('None', 'invalid'):
test_invalid_ec_frag_index_header(value)
@patch_policies([ECStoragePolicy(0, name='ec', is_default=True,
ec_type=DEFAULT_TEST_EC_TYPE,
ec_ndata=10, ec_nparity=4,
ec_segment_size=4096,
ec_duplication_factor=2)],
fake_ring_args=[{'replicas': 28}])
class TestObjectReconstructorECDuplicationFactor(TestObjectReconstructor):
def setUp(self):
super(TestObjectReconstructorECDuplicationFactor, self).setUp()
self.fabricated_ring = FabricatedRing(replicas=28, devices=56)
def _test_reconstruct_with_duplicate_frags_no_errors(self, index):
job = {
'partition': 0,
'policy': self.policy,
}
part_nodes = self.policy.object_ring.get_part_nodes(0)
node = part_nodes[index]
metadata = {
'name': '/a/c/o',
'Content-Length': 0,
'ETag': 'etag',
'X-Timestamp': '1234567890.12345',
}
test_data = ('rebuild' * self.policy.ec_segment_size)[:-777]
etag = md5(test_data).hexdigest()
ec_archive_bodies = make_ec_archive_bodies(self.policy, test_data)
broken_body = ec_archive_bodies.pop(index)
responses = list()
for body in ec_archive_bodies:
headers = get_header_frag_index(self, body)
headers.update({'X-Object-Sysmeta-Ec-Etag': etag})
responses.append((200, body, headers))
# make a hook point at
# swift.obj.reconstructor.ObjectReconstructor._get_response
called_headers = []
orig_func = object_reconstructor.ObjectReconstructor._get_response
def _get_response_hook(self, node, part, path, headers, policy):
called_headers.append(headers)
return orig_func(self, node, part, path, headers, policy)
# need to m + 1 node failures to reach 2nd set of duplicated fragments
failed_start_at = (
self.policy.ec_n_unique_fragments - self.policy.ec_nparity - 1)
# set Timeout for node #10, #11, #12, #13, #14
for i in range(self.policy.ec_nparity + 1):
responses[failed_start_at + i] = (Timeout(), '', '')
codes, body_iter, headers = zip(*responses)
get_response_path = \
'swift.obj.reconstructor.ObjectReconstructor._get_response'
with mock.patch(get_response_path, _get_response_hook):
with mocked_http_conn(
*codes, body_iter=body_iter, headers=headers):
df = self.reconstructor.reconstruct_fa(
job, node, metadata)
fixed_body = ''.join(df.reader())
self.assertEqual(len(fixed_body), len(broken_body))
self.assertEqual(md5(fixed_body).hexdigest(),
md5(broken_body).hexdigest())
for called_header in called_headers:
called_header = HeaderKeyDict(called_header)
self.assertTrue('Content-Length' in called_header)
self.assertEqual(called_header['Content-Length'], '0')
self.assertTrue('User-Agent' in called_header)
user_agent = called_header['User-Agent']
self.assertTrue(user_agent.startswith('obj-reconstructor'))
def test_reconstruct_with_duplicate_frags_no_errors(self):
# any fragments can be broken
for index in range(28):
self._test_reconstruct_with_duplicate_frags_no_errors(index)
if __name__ == '__main__':
unittest.main()
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