# Copyright (c) 2010-2017 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 hashlib
import json
import random
import eventlet
import os
import shutil
from contextlib import contextmanager
from tempfile import mkdtemp
from uuid import uuid4
import mock
import unittest
from collections import defaultdict
import time
from copy import deepcopy
import six
from swift.common import internal_client
from swift.container import replicator
from swift.container.backend import ContainerBroker, UNSHARDED, SHARDING, \
SHARDED, DATADIR
from swift.container.sharder import ContainerSharder, sharding_enabled, \
CleavingContext, DEFAULT_SHARD_SHRINK_POINT, \
DEFAULT_SHARD_CONTAINER_THRESHOLD
from swift.common.utils import ShardRange, Timestamp, hash_path, \
encode_timestamps, parse_db_filename, quorum_size, Everything
from test import annotate_failure
from test.unit import debug_logger, FakeRing, \
make_timestamp_iter, unlink_files, mocked_http_conn, mock_timestamp_now, \
attach_fake_replication_rpc
class BaseTestSharder(unittest.TestCase):
def setUp(self):
self.tempdir = mkdtemp()
self.ts_iter = make_timestamp_iter()
self.logger = debug_logger('sharder-test')
def tearDown(self):
shutil.rmtree(self.tempdir, ignore_errors=True)
def _assert_shard_ranges_equal(self, expected, actual):
self.assertEqual([dict(sr) for sr in expected],
[dict(sr) for sr in actual])
def _make_broker(self, account='a', container='c', epoch=None,
device='sda', part=0, hash_=None):
hash_ = hash_ or hashlib.md5(container.encode('utf-8')).hexdigest()
datadir = os.path.join(
self.tempdir, device, 'containers', str(part), hash_[-3:], hash_)
if epoch:
filename = '%s_%s.db' % (hash, epoch)
else:
filename = hash_ + '.db'
db_file = os.path.join(datadir, filename)
broker = ContainerBroker(
db_file, account=account, container=container,
logger=self.logger)
broker.initialize()
return broker
def _make_old_style_sharding_broker(self, account='a', container='c',
shard_bounds=(('', 'middle'),
('middle', ''))):
broker = self._make_broker(account=account, container=container)
broker.set_sharding_sysmeta('Root', 'a/c')
old_db_id = broker.get_info()['id']
broker.enable_sharding(next(self.ts_iter))
shard_ranges = self._make_shard_ranges(
shard_bounds, state=ShardRange.CLEAVED)
broker.merge_shard_ranges(shard_ranges)
self.assertTrue(broker.set_sharding_state())
broker = ContainerBroker(broker.db_file, account='a', container='c')
self.assertNotEqual(old_db_id, broker.get_info()['id']) # sanity check
return broker
def _make_sharding_broker(self, account='a', container='c',
shard_bounds=(('', 'middle'), ('middle', ''))):
broker = self._make_broker(account=account, container=container)
broker.set_sharding_sysmeta('Quoted-Root', 'a/c')
old_db_id = broker.get_info()['id']
broker.enable_sharding(next(self.ts_iter))
shard_ranges = self._make_shard_ranges(
shard_bounds, state=ShardRange.CLEAVED)
broker.merge_shard_ranges(shard_ranges)
self.assertTrue(broker.set_sharding_state())
broker = ContainerBroker(broker.db_file, account='a', container='c')
self.assertNotEqual(old_db_id, broker.get_info()['id']) # sanity check
return broker
def _make_shard_ranges(self, bounds, state=None, object_count=0):
return [ShardRange('.shards_a/c_%s' % upper, Timestamp.now(),
lower, upper, state=state,
object_count=object_count)
for lower, upper in bounds]
def ts_encoded(self):
# make a unique timestamp string with multiple timestamps encoded;
# use different deltas between component timestamps
timestamps = [next(self.ts_iter) for i in range(4)]
return encode_timestamps(
timestamps[0], timestamps[1], timestamps[3])
class TestSharder(BaseTestSharder):
def test_init(self):
def do_test(conf, expected, logger=self.logger):
if logger:
logger.clear()
with mock.patch(
'swift.container.sharder.internal_client.InternalClient') \
as mock_ic:
with mock.patch('swift.common.db_replicator.ring.Ring') \
as mock_ring:
mock_ring.return_value = mock.MagicMock()
mock_ring.return_value.replica_count = 3
sharder = ContainerSharder(conf, logger=logger)
mock_ring.assert_called_once_with(
'/etc/swift', ring_name='container')
for k, v in expected.items():
self.assertTrue(hasattr(sharder, k), 'Missing attr %s' % k)
self.assertEqual(v, getattr(sharder, k),
'Incorrect value: expected %s=%s but got %s' %
(k, v, getattr(sharder, k)))
return sharder, mock_ic
expected = {
'mount_check': True, 'bind_ip': '0.0.0.0', 'port': 6201,
'per_diff': 1000, 'max_diffs': 100, 'interval': 30,
'databases_per_second': 50,
'cleave_row_batch_size': 10000,
'node_timeout': 10, 'conn_timeout': 5,
'rsync_compress': False,
'rsync_module': '{replication_ip}::container',
'reclaim_age': 86400 * 7,
'shard_shrink_point': 0.25,
'shrink_merge_point': 0.75,
'shard_container_threshold': 1000000,
'split_size': 500000,
'cleave_batch_size': 2,
'scanner_batch_size': 10,
'rcache': '/var/cache/swift/container.recon',
'shards_account_prefix': '.shards_',
'auto_shard': False,
'recon_candidates_limit': 5,
'shard_replication_quorum': 2,
'existing_shard_replication_quorum': 2
}
sharder, mock_ic = do_test({}, expected, logger=None)
self.assertEqual(
'container-sharder', sharder.logger.logger.name)
mock_ic.assert_called_once_with(
'/etc/swift/internal-client.conf', 'Swift Container Sharder', 3,
allow_modify_pipeline=False)
conf = {
'mount_check': False, 'bind_ip': '10.11.12.13', 'bind_port': 62010,
'per_diff': 2000, 'max_diffs': 200, 'interval': 60,
'databases_per_second': 5,
'cleave_row_batch_size': 3000,
'node_timeout': 20, 'conn_timeout': 1,
'rsync_compress': True,
'rsync_module': '{replication_ip}::container_sda/',
'reclaim_age': 86400 * 14,
'shard_shrink_point': 35,
'shard_shrink_merge_point': 85,
'shard_container_threshold': 20000000,
'cleave_batch_size': 4,
'shard_scanner_batch_size': 8,
'request_tries': 2,
'internal_client_conf_path': '/etc/swift/my-sharder-ic.conf',
'recon_cache_path': '/var/cache/swift-alt',
'auto_create_account_prefix': '...',
'auto_shard': 'yes',
'recon_candidates_limit': 10,
'shard_replication_quorum': 1,
'existing_shard_replication_quorum': 0
}
expected = {
'mount_check': False, 'bind_ip': '10.11.12.13', 'port': 62010,
'per_diff': 2000, 'max_diffs': 200, 'interval': 60,
'databases_per_second': 5,
'cleave_row_batch_size': 3000,
'node_timeout': 20, 'conn_timeout': 1,
'rsync_compress': True,
'rsync_module': '{replication_ip}::container_sda',
'reclaim_age': 86400 * 14,
'shard_shrink_point': 0.35,
'shrink_merge_point': 0.85,
'shard_container_threshold': 20000000,
'split_size': 10000000,
'cleave_batch_size': 4,
'scanner_batch_size': 8,
'rcache': '/var/cache/swift-alt/container.recon',
'shards_account_prefix': '...shards_',
'auto_shard': True,
'recon_candidates_limit': 10,
'shard_replication_quorum': 1,
'existing_shard_replication_quorum': 0
}
sharder, mock_ic = do_test(conf, expected)
mock_ic.assert_called_once_with(
'/etc/swift/my-sharder-ic.conf', 'Swift Container Sharder', 2,
allow_modify_pipeline=False)
self.assertEqual(self.logger.get_lines_for_level('warning'), [
'Option auto_create_account_prefix is deprecated. '
'Configure auto_create_account_prefix under the '
'swift-constraints section of swift.conf. This option '
'will be ignored in a future release.'])
expected.update({'shard_replication_quorum': 3,
'existing_shard_replication_quorum': 3})
conf.update({'shard_replication_quorum': 4,
'existing_shard_replication_quorum': 4})
do_test(conf, expected)
warnings = self.logger.get_lines_for_level('warning')
self.assertEqual(warnings[:1], [
'Option auto_create_account_prefix is deprecated. '
'Configure auto_create_account_prefix under the '
'swift-constraints section of swift.conf. This option '
'will be ignored in a future release.'])
self.assertEqual(warnings[1:], [
'shard_replication_quorum of 4 exceeds replica count 3, '
'reducing to 3',
'existing_shard_replication_quorum of 4 exceeds replica count 3, '
'reducing to 3',
])
with self.assertRaises(ValueError) as cm:
do_test({'shard_shrink_point': 101}, {})
self.assertIn(
'greater than 0, less than 100, not "101"', str(cm.exception))
self.assertIn('shard_shrink_point', str(cm.exception))
with self.assertRaises(ValueError) as cm:
do_test({'shard_shrink_merge_point': 101}, {})
self.assertIn(
'greater than 0, less than 100, not "101"', str(cm.exception))
self.assertIn('shard_shrink_merge_point', str(cm.exception))
def test_init_internal_client_conf_loading_error(self):
with mock.patch('swift.common.db_replicator.ring.Ring') \
as mock_ring:
mock_ring.return_value = mock.MagicMock()
mock_ring.return_value.replica_count = 3
with self.assertRaises(SystemExit) as cm:
ContainerSharder(
{'internal_client_conf_path':
os.path.join(self.tempdir, 'nonexistent')})
self.assertIn('Unable to load internal client', str(cm.exception))
with mock.patch('swift.common.db_replicator.ring.Ring') \
as mock_ring:
mock_ring.return_value = mock.MagicMock()
mock_ring.return_value.replica_count = 3
with mock.patch(
'swift.container.sharder.internal_client.InternalClient',
side_effect=Exception('kaboom')):
with self.assertRaises(Exception) as cm:
ContainerSharder({})
self.assertIn('kaboom', str(cm.exception))
def _assert_stats(self, expected, sharder, category):
# assertEqual doesn't work with a defaultdict
stats = sharder.stats['sharding'][category]
for k, v in expected.items():
actual = stats[k]
self.assertEqual(
v, actual, 'Expected %s but got %s for %s in %s' %
(v, actual, k, stats))
return stats
def _assert_recon_stats(self, expected, sharder, category):
with open(sharder.rcache, 'rb') as fd:
recon = json.load(fd)
stats = recon['sharding_stats']['sharding'].get(category)
self.assertEqual(expected, stats)
def test_increment_stats(self):
with self._mock_sharder() as sharder:
sharder._increment_stat('visited', 'success')
sharder._increment_stat('visited', 'success')
sharder._increment_stat('visited', 'failure')
sharder._increment_stat('visited', 'completed')
sharder._increment_stat('cleaved', 'success')
sharder._increment_stat('scanned', 'found', step=4)
expected = {'success': 2,
'failure': 1,
'completed': 1}
self._assert_stats(expected, sharder, 'visited')
self._assert_stats({'success': 1}, sharder, 'cleaved')
self._assert_stats({'found': 4}, sharder, 'scanned')
def test_increment_stats_with_statsd(self):
with self._mock_sharder() as sharder:
sharder._increment_stat('visited', 'success', statsd=True)
sharder._increment_stat('visited', 'success', statsd=True)
sharder._increment_stat('visited', 'failure', statsd=True)
sharder._increment_stat('visited', 'failure', statsd=False)
sharder._increment_stat('visited', 'completed')
expected = {'success': 2,
'failure': 2,
'completed': 1}
self._assert_stats(expected, sharder, 'visited')
counts = sharder.logger.get_increment_counts()
self.assertEqual(2, counts.get('visited_success'))
self.assertEqual(1, counts.get('visited_failure'))
self.assertIsNone(counts.get('visited_completed'))
def test_run_forever(self):
conf = {'recon_cache_path': self.tempdir,
'devices': self.tempdir}
with self._mock_sharder(conf) as sharder:
sharder._check_node = lambda node: os.path.join(
sharder.conf['devices'], node['device'])
sharder.logger.clear()
brokers = []
for container in ('c1', 'c2'):
broker = self._make_broker(
container=container, hash_=container + 'hash',
device=sharder.ring.devs[0]['device'], part=0)
broker.update_metadata({'X-Container-Sysmeta-Sharding':
('true', next(self.ts_iter).internal)})
brokers.append(broker)
fake_stats = {
'scanned': {'attempted': 1, 'success': 1, 'failure': 0,
'found': 2, 'min_time': 99, 'max_time': 123},
'created': {'attempted': 1, 'success': 1, 'failure': 1},
'cleaved': {'attempted': 1, 'success': 1, 'failure': 0,
'min_time': 0.01, 'max_time': 1.3},
'misplaced': {'attempted': 1, 'success': 1, 'failure': 0,
'found': 1, 'placed': 1, 'unplaced': 0},
'audit_root': {'attempted': 5, 'success': 4, 'failure': 1},
'audit_shard': {'attempted': 2, 'success': 2, 'failure': 0},
}
# NB these are time increments not absolute times...
fake_periods = [1, 2, 3, 3600, 4, 15, 15, 0]
fake_periods_iter = iter(fake_periods)
recon_data = []
fake_process_broker_calls = []
def mock_dump_recon_cache(data, *args):
recon_data.append(deepcopy(data))
with mock.patch('swift.container.sharder.time.time') as fake_time:
def fake_process_broker(broker, *args, **kwargs):
# increment time and inject some fake stats
fake_process_broker_calls.append((broker, args, kwargs))
try:
fake_time.return_value += next(fake_periods_iter)
except StopIteration:
# bail out
fake_time.side_effect = Exception('Test over')
sharder.stats['sharding'].update(fake_stats)
with mock.patch(
'swift.container.sharder.time.sleep') as mock_sleep:
with mock.patch(
'swift.container.sharder.is_sharding_candidate',
return_value=True):
with mock.patch(
'swift.container.sharder.dump_recon_cache',
mock_dump_recon_cache):
fake_time.return_value = next(fake_periods_iter)
sharder._is_sharding_candidate = lambda x: True
sharder._process_broker = fake_process_broker
with self.assertRaises(Exception) as cm:
sharder.run_forever()
self.assertEqual('Test over', str(cm.exception))
# four cycles are started, two brokers visited per cycle, but
# fourth never completes
self.assertEqual(8, len(fake_process_broker_calls))
# expect initial random sleep then one sleep between first and
# second pass
self.assertEqual(2, mock_sleep.call_count)
self.assertLessEqual(mock_sleep.call_args_list[0][0][0], 30)
self.assertLessEqual(mock_sleep.call_args_list[1][0][0],
30 - fake_periods[0])
lines = sharder.logger.get_lines_for_level('info')
categories = ('visited', 'scanned', 'created', 'cleaved',
'misplaced', 'audit_root', 'audit_shard')
def check_categories(start_time):
for category in categories:
line = lines.pop(0)
self.assertIn('Since %s' % time.ctime(start_time), line)
self.assertIn(category, line)
for k, v in fake_stats.get(category, {}).items():
self.assertIn('%s:%s' % (k, v), line)
def check_logs(cycle_time, start_time,
expect_periodic_stats=False):
self.assertIn('Container sharder cycle starting', lines.pop(0))
check_categories(start_time)
if expect_periodic_stats:
check_categories(start_time)
self.assertIn('Container sharder cycle completed: %.02fs' %
cycle_time, lines.pop(0))
check_logs(sum(fake_periods[1:3]), fake_periods[0])
check_logs(sum(fake_periods[3:5]), sum(fake_periods[:3]),
expect_periodic_stats=True)
check_logs(sum(fake_periods[5:7]), sum(fake_periods[:5]))
# final cycle start but then exception pops to terminate test
self.assertIn('Container sharder cycle starting', lines.pop(0))
self.assertFalse(lines)
lines = sharder.logger.get_lines_for_level('error')
self.assertIn(
'Unhandled exception while dumping progress', lines[0])
self.assertIn('Test over', lines[0])
def check_recon(data, time, last, expected_stats):
self.assertEqual(time, data['sharding_time'])
self.assertEqual(last, data['sharding_last'])
self.assertEqual(
expected_stats, dict(data['sharding_stats']['sharding']))
def stats_for_candidate(broker):
return {'object_count': 0,
'account': broker.account,
'meta_timestamp': mock.ANY,
'container': broker.container,
'file_size': os.stat(broker.db_file).st_size,
'path': broker.db_file,
'root': broker.path,
'node_index': 0}
self.assertEqual(4, len(recon_data))
# stats report at end of first cycle
fake_stats.update({'visited': {'attempted': 2, 'skipped': 0,
'success': 2, 'failure': 0,
'completed': 0}})
fake_stats.update({
'sharding_candidates': {
'found': 2,
'top': [stats_for_candidate(call[0])
for call in fake_process_broker_calls[:2]]
}
})
check_recon(recon_data[0], sum(fake_periods[1:3]),
sum(fake_periods[:3]), fake_stats)
# periodic stats report after first broker has been visited during
# second cycle - one candidate identified so far this cycle
fake_stats.update({'visited': {'attempted': 1, 'skipped': 0,
'success': 1, 'failure': 0,
'completed': 0}})
fake_stats.update({
'sharding_candidates': {
'found': 1,
'top': [stats_for_candidate(call[0])
for call in fake_process_broker_calls[2:3]]
}
})
check_recon(recon_data[1], fake_periods[3],
sum(fake_periods[:4]), fake_stats)
# stats report at end of second cycle - both candidates reported
fake_stats.update({'visited': {'attempted': 2, 'skipped': 0,
'success': 2, 'failure': 0,
'completed': 0}})
fake_stats.update({
'sharding_candidates': {
'found': 2,
'top': [stats_for_candidate(call[0])
for call in fake_process_broker_calls[2:4]]
}
})
check_recon(recon_data[2], sum(fake_periods[3:5]),
sum(fake_periods[:5]), fake_stats)
# stats report at end of third cycle
fake_stats.update({'visited': {'attempted': 2, 'skipped': 0,
'success': 2, 'failure': 0,
'completed': 0}})
fake_stats.update({
'sharding_candidates': {
'found': 2,
'top': [stats_for_candidate(call[0])
for call in fake_process_broker_calls[4:6]]
}
})
check_recon(recon_data[3], sum(fake_periods[5:7]),
sum(fake_periods[:7]), fake_stats)
def test_one_shard_cycle(self):
conf = {'recon_cache_path': self.tempdir,
'devices': self.tempdir,
'shard_container_threshold': 9}
def fake_ismount(path):
# unmounted_dev is defined from .get_more_nodes() below
unmounted_path = os.path.join(conf['devices'],
unmounted_dev['device'])
if path == unmounted_path:
return False
else:
return True
with self._mock_sharder(conf) as sharder, \
mock.patch('swift.common.utils.ismount', fake_ismount), \
mock.patch('swift.container.sharder.is_local_device',
return_value=True):
sharder.reported = time.time()
brokers = []
device_ids = set(d['id'] for d in sharder.ring.devs)
sharder.ring.max_more_nodes = 1
unmounted_dev = next(sharder.ring.get_more_nodes(1))
unmounted_dev['device'] = 'xxxx'
sharder.ring.add_node(unmounted_dev)
for device_id in device_ids:
brokers.append(self._make_broker(
container='c%s' % device_id, hash_='c%shash' % device_id,
device=sharder.ring.devs[device_id]['device'], part=0))
# enable a/c2 and a/c3 for sharding
for broker in brokers[1:]:
broker.update_metadata({'X-Container-Sysmeta-Sharding':
('true', next(self.ts_iter).internal)})
# make a/c2 a candidate for sharding
for i in range(10):
brokers[1].put_object('o%s' % i, next(self.ts_iter).internal,
0, 'text/plain', 'etag', 0)
# check only sharding enabled containers are processed
with mock.patch('eventlet.sleep'), mock.patch.object(
sharder, '_process_broker'
) as mock_process_broker:
sharder._local_device_ids = {'stale_node_id'}
sharder._one_shard_cycle(Everything(), Everything())
lines = sharder.logger.get_lines_for_level('warning')
expected = 'Skipping %s as it is not mounted' % \
unmounted_dev['device']
self.assertIn(expected, lines[0])
self.assertEqual(device_ids, sharder._local_device_ids)
self.assertEqual(2, mock_process_broker.call_count)
processed_paths = [call[0][0].path
for call in mock_process_broker.call_args_list]
self.assertEqual({'a/c1', 'a/c2'}, set(processed_paths))
self.assertFalse(sharder.logger.get_lines_for_level('error'))
expected_stats = {'attempted': 2, 'success': 2, 'failure': 0,
'skipped': 1, 'completed': 0}
self._assert_recon_stats(expected_stats, sharder, 'visited')
expected_candidate_stats = {
'found': 1,
'top': [{'object_count': 10, 'account': 'a', 'container': 'c1',
'meta_timestamp': mock.ANY,
'file_size': os.stat(brokers[1].db_file).st_size,
'path': brokers[1].db_file, 'root': 'a/c1',
'node_index': 1}]}
self._assert_recon_stats(
expected_candidate_stats, sharder, 'sharding_candidates')
self._assert_recon_stats(None, sharder, 'sharding_progress')
# enable and progress container a/c1 by giving it shard ranges
now = next(self.ts_iter)
brokers[0].merge_shard_ranges(
[ShardRange('a/c0', now, '', '', state=ShardRange.SHARDING),
ShardRange('.s_a/1', now, '', 'b', state=ShardRange.ACTIVE),
ShardRange('.s_a/2', now, 'b', 'c', state=ShardRange.CLEAVED),
ShardRange('.s_a/3', now, 'c', 'd', state=ShardRange.CREATED),
ShardRange('.s_a/4', now, 'd', 'e', state=ShardRange.CREATED),
ShardRange('.s_a/5', now, 'e', '', state=ShardRange.FOUND)])
brokers[1].merge_shard_ranges(
[ShardRange('a/c1', now, '', '', state=ShardRange.SHARDING),
ShardRange('.s_a/6', now, '', 'b', state=ShardRange.ACTIVE),
ShardRange('.s_a/7', now, 'b', 'c', state=ShardRange.ACTIVE),
ShardRange('.s_a/8', now, 'c', 'd', state=ShardRange.CLEAVED),
ShardRange('.s_a/9', now, 'd', 'e', state=ShardRange.CREATED),
ShardRange('.s_a/0', now, 'e', '', state=ShardRange.CREATED)])
for i in range(11):
brokers[2].put_object('o%s' % i, next(self.ts_iter).internal,
0, 'text/plain', 'etag', 0)
def mock_processing(broker, node, part):
if broker.path == 'a/c1':
raise Exception('kapow!')
elif broker.path not in ('a/c0', 'a/c2'):
raise BaseException("I don't know how to handle a broker "
"for %s" % broker.path)
# check exceptions are handled
sharder.logger.clear()
with mock.patch('eventlet.sleep'), mock.patch.object(
sharder, '_process_broker', side_effect=mock_processing
) as mock_process_broker:
sharder._local_device_ids = {'stale_node_id'}
sharder._one_shard_cycle(Everything(), Everything())
lines = sharder.logger.get_lines_for_level('warning')
expected = 'Skipping %s as it is not mounted' % \
unmounted_dev['device']
self.assertIn(expected, lines[0])
self.assertEqual(device_ids, sharder._local_device_ids)
self.assertEqual(3, mock_process_broker.call_count)
processed_paths = [call[0][0].path
for call in mock_process_broker.call_args_list]
self.assertEqual({'a/c0', 'a/c1', 'a/c2'}, set(processed_paths))
lines = sharder.logger.get_lines_for_level('error')
self.assertIn('Unhandled exception while processing', lines[0])
self.assertFalse(lines[1:])
sharder.logger.clear()
expected_stats = {'attempted': 3, 'success': 2, 'failure': 1,
'skipped': 0, 'completed': 0}
self._assert_recon_stats(expected_stats, sharder, 'visited')
expected_candidate_stats = {
'found': 1,
'top': [{'object_count': 11, 'account': 'a', 'container': 'c2',
'meta_timestamp': mock.ANY,
'file_size': os.stat(brokers[1].db_file).st_size,
'path': brokers[2].db_file, 'root': 'a/c2',
'node_index': 2}]}
self._assert_recon_stats(
expected_candidate_stats, sharder, 'sharding_candidates')
expected_in_progress_stats = {
'all': [{'object_count': 0, 'account': 'a', 'container': 'c0',
'meta_timestamp': mock.ANY,
'file_size': os.stat(brokers[0].db_file).st_size,
'path': brokers[0].db_file, 'root': 'a/c0',
'node_index': 0,
'found': 1, 'created': 2, 'cleaved': 1, 'active': 1,
'state': 'sharding', 'db_state': 'unsharded',
'error': None},
{'object_count': 10, 'account': 'a', 'container': 'c1',
'meta_timestamp': mock.ANY,
'file_size': os.stat(brokers[1].db_file).st_size,
'path': brokers[1].db_file, 'root': 'a/c1',
'node_index': 1,
'found': 0, 'created': 2, 'cleaved': 1, 'active': 2,
'state': 'sharding', 'db_state': 'unsharded',
'error': 'kapow!'}]}
self._assert_stats(
expected_in_progress_stats, sharder, 'sharding_in_progress')
# check that candidates and in progress stats don't stick in recon
own_shard_range = brokers[0].get_own_shard_range()
own_shard_range.state = ShardRange.ACTIVE
brokers[0].merge_shard_ranges([own_shard_range])
for i in range(10):
brokers[1].delete_object(
'o%s' % i, next(self.ts_iter).internal)
with mock.patch('eventlet.sleep'), mock.patch.object(
sharder, '_process_broker'
) as mock_process_broker:
sharder._local_device_ids = {999}
sharder._one_shard_cycle(Everything(), Everything())
self.assertEqual(device_ids, sharder._local_device_ids)
self.assertEqual(3, mock_process_broker.call_count)
processed_paths = [call[0][0].path
for call in mock_process_broker.call_args_list]
self.assertEqual({'a/c0', 'a/c1', 'a/c2'}, set(processed_paths))
self.assertFalse(sharder.logger.get_lines_for_level('error'))
expected_stats = {'attempted': 3, 'success': 3, 'failure': 0,
'skipped': 0, 'completed': 0}
self._assert_recon_stats(expected_stats, sharder, 'visited')
self._assert_recon_stats(
expected_candidate_stats, sharder, 'sharding_candidates')
self._assert_recon_stats(None, sharder, 'sharding_progress')
def test_ratelimited_roundrobin(self):
n_databases = 100
def stub_iter(dirs):
for i in range(n_databases):
yield i, '/srv/node/sda/path/to/container.db', {}
now = time.time()
clock = {
'sleeps': [],
'now': now,
}
def fake_sleep(t):
clock['sleeps'].append(t)
clock['now'] += t
def fake_time():
return clock['now']
with self._mock_sharder({'databases_per_second': 1}) as sharder, \
mock.patch('swift.common.db_replicator.roundrobin_datadirs',
stub_iter), \
mock.patch('time.time', fake_time), \
mock.patch('eventlet.sleep', fake_sleep):
list(sharder.roundrobin_datadirs(None))
# 100 db at 1/s should take ~100s
run_time = sum(clock['sleeps'])
self.assertTrue(97 <= run_time < 100, 'took %s' % run_time)
n_databases = 1000
now = time.time()
clock = {
'sleeps': [],
'now': now,
}
with self._mock_sharder({'databases_per_second': 50}) as sharder, \
mock.patch('swift.common.db_replicator.roundrobin_datadirs',
stub_iter), \
mock.patch('time.time', fake_time), \
mock.patch('eventlet.sleep', fake_sleep):
list(sharder.roundrobin_datadirs(None))
# 1000 db at 50/s
run_time = sum(clock['sleeps'])
self.assertTrue(18 <= run_time < 20, 'took %s' % run_time)
@contextmanager
def _mock_sharder(self, conf=None, replicas=3):
self.logger.clear()
conf = conf or {}
conf['devices'] = self.tempdir
with mock.patch(
'swift.container.sharder.internal_client.InternalClient'):
with mock.patch(
'swift.common.db_replicator.ring.Ring',
lambda *args, **kwargs: FakeRing(replicas=replicas)):
sharder = ContainerSharder(conf, logger=self.logger)
sharder._local_device_ids = {0, 1, 2}
sharder._replicate_object = mock.MagicMock(
return_value=(True, [True] * sharder.ring.replica_count))
yield sharder
def _get_raw_object_records(self, broker):
# use list_objects_iter with no-op transform_func to get back actual
# un-transformed rows with encoded timestamps
return [list(obj) for obj in broker.list_objects_iter(
10, '', '', '', '', include_deleted=None, all_policies=True,
transform_func=lambda record: record)]
def _check_objects(self, expected_objs, shard_db):
shard_broker = ContainerBroker(shard_db)
shard_objs = self._get_raw_object_records(shard_broker)
expected_objs = [list(obj) for obj in expected_objs]
self.assertEqual(expected_objs, shard_objs)
def _check_shard_range(self, expected, actual):
expected_dict = dict(expected)
actual_dict = dict(actual)
self.assertGreater(actual_dict.pop('meta_timestamp'),
expected_dict.pop('meta_timestamp'))
self.assertEqual(expected_dict, actual_dict)
def test_check_node(self):
node = {
'replication_ip': '127.0.0.1',
'replication_port': 5000,
'device': 'd100',
}
with self._mock_sharder() as sharder:
sharder.mount_check = True
sharder.ips = ['127.0.0.1']
sharder.port = 5000
# normal behavior
with mock.patch(
'swift.common.utils.ismount',
lambda *args: True):
r = sharder._check_node(node)
expected = os.path.join(sharder.conf['devices'], node['device'])
self.assertEqual(r, expected)
# test with an unmounted drive
with mock.patch(
'swift.common.utils.ismount',
lambda *args: False):
r = sharder._check_node(node)
self.assertEqual(r, False)
lines = sharder.logger.get_lines_for_level('warning')
expected = 'Skipping %s as it is not mounted' % node['device']
self.assertIn(expected, lines[0])
def test_fetch_shard_ranges_unexpected_response(self):
broker = self._make_broker()
exc = internal_client.UnexpectedResponse(
'Unexpected response: 404', None)
with self._mock_sharder() as sharder:
sharder.int_client.make_request.side_effect = exc
self.assertIsNone(sharder._fetch_shard_ranges(broker))
lines = sharder.logger.get_lines_for_level('warning')
self.assertIn('Unexpected response: 404', lines[0])
self.assertFalse(lines[1:])
def test_fetch_shard_ranges_bad_record_type(self):
def do_test(mock_resp_headers):
with self._mock_sharder() as sharder:
mock_make_request = mock.MagicMock(
return_value=mock.MagicMock(headers=mock_resp_headers))
sharder.int_client.make_request = mock_make_request
self.assertIsNone(sharder._fetch_shard_ranges(broker))
lines = sharder.logger.get_lines_for_level('error')
self.assertIn('unexpected record type', lines[0])
self.assertFalse(lines[1:])
broker = self._make_broker()
do_test({})
do_test({'x-backend-record-type': 'object'})
do_test({'x-backend-record-type': 'disco'})
def test_fetch_shard_ranges_bad_data(self):
def do_test(mock_resp_body):
mock_resp_headers = {'x-backend-record-type': 'shard'}
with self._mock_sharder() as sharder:
mock_make_request = mock.MagicMock(
return_value=mock.MagicMock(headers=mock_resp_headers,
body=mock_resp_body))
sharder.int_client.make_request = mock_make_request
self.assertIsNone(sharder._fetch_shard_ranges(broker))
lines = sharder.logger.get_lines_for_level('error')
self.assertIn('invalid data', lines[0])
self.assertFalse(lines[1:])
broker = self._make_broker()
do_test({})
do_test('')
do_test(json.dumps({}))
do_test(json.dumps([{'account': 'a', 'container': 'c'}]))
def test_fetch_shard_ranges_ok(self):
def do_test(mock_resp_body, params):
mock_resp_headers = {'x-backend-record-type': 'shard'}
with self._mock_sharder() as sharder:
mock_make_request = mock.MagicMock(
return_value=mock.MagicMock(headers=mock_resp_headers,
body=mock_resp_body))
sharder.int_client.make_request = mock_make_request
mock_make_path = mock.MagicMock(return_value='/v1/a/c')
sharder.int_client.make_path = mock_make_path
actual = sharder._fetch_shard_ranges(broker, params=params)
sharder.int_client.make_path.assert_called_once_with('a', 'c')
self.assertFalse(sharder.logger.get_lines_for_level('error'))
return actual, mock_make_request
expected_headers = {'X-Backend-Record-Type': 'shard',
'X-Backend-Include-Deleted': 'False',
'X-Backend-Override-Deleted': 'true'}
broker = self._make_broker()
shard_ranges = self._make_shard_ranges((('', 'm'), ('m', '')))
params = {'format': 'json'}
actual, mock_call = do_test(json.dumps([dict(shard_ranges[0])]),
params={})
mock_call.assert_called_once_with(
'GET', '/v1/a/c', expected_headers, acceptable_statuses=(2,),
params=params)
self._assert_shard_ranges_equal([shard_ranges[0]], actual)
params = {'format': 'json', 'includes': 'thing'}
actual, mock_call = do_test(
json.dumps([dict(sr) for sr in shard_ranges]), params=params)
self._assert_shard_ranges_equal(shard_ranges, actual)
mock_call.assert_called_once_with(
'GET', '/v1/a/c', expected_headers, acceptable_statuses=(2,),
params=params)
params = {'format': 'json',
'end_marker': 'there', 'marker': 'here'}
actual, mock_call = do_test(json.dumps([]), params=params)
self._assert_shard_ranges_equal([], actual)
mock_call.assert_called_once_with(
'GET', '/v1/a/c', expected_headers, acceptable_statuses=(2,),
params=params)
def _check_cleave_root(self, conf=None):
broker = self._make_broker()
objects = [
# shard 0
('a', self.ts_encoded(), 10, 'text/plain', 'etag_a', 0, 0),
('here', self.ts_encoded(), 10, 'text/plain', 'etag_here', 0, 0),
# shard 1
('m', self.ts_encoded(), 1, 'text/plain', 'etag_m', 0, 0),
('n', self.ts_encoded(), 2, 'text/plain', 'etag_n', 0, 0),
('there', self.ts_encoded(), 3, 'text/plain', 'etag_there', 0, 0),
# shard 2
('where', self.ts_encoded(), 100, 'text/plain', 'etag_where', 0,
0),
# shard 3
('x', self.ts_encoded(), 0, '', '', 1, 0), # deleted
('y', self.ts_encoded(), 1000, 'text/plain', 'etag_y', 0, 0),
# shard 4
('yyyy', self.ts_encoded(), 14, 'text/plain', 'etag_yyyy', 0, 0),
]
for obj in objects:
broker.put_object(*obj)
initial_root_info = broker.get_info()
broker.enable_sharding(Timestamp.now())
shard_bounds = (('', 'here'), ('here', 'there'),
('there', 'where'), ('where', 'yonder'),
('yonder', ''))
shard_ranges = self._make_shard_ranges(shard_bounds)
expected_shard_dbs = []
for shard_range in shard_ranges:
db_hash = hash_path(shard_range.account, shard_range.container)
expected_shard_dbs.append(
os.path.join(self.tempdir, 'sda', 'containers', '0',
db_hash[-3:], db_hash, db_hash + '.db'))
# used to accumulate stats from sharded dbs
total_shard_stats = {'object_count': 0, 'bytes_used': 0}
# run cleave - no shard ranges, nothing happens
with self._mock_sharder(conf=conf) as sharder:
self.assertFalse(sharder._cleave(broker))
context = CleavingContext.load(broker)
self.assertTrue(context.misplaced_done)
self.assertFalse(context.cleaving_done)
self.assertEqual('', context.cursor)
self.assertEqual(9, context.cleave_to_row)
self.assertEqual(9, context.max_row)
self.assertEqual(0, context.ranges_done)
self.assertEqual(0, context.ranges_todo)
self.assertEqual(UNSHARDED, broker.get_db_state())
sharder._replicate_object.assert_not_called()
for db in expected_shard_dbs:
with annotate_failure(db):
self.assertFalse(os.path.exists(db))
# run cleave - all shard ranges in found state, nothing happens
broker.merge_shard_ranges(shard_ranges[:4])
self.assertTrue(broker.set_sharding_state())
with self._mock_sharder(conf=conf) as sharder:
self.assertFalse(sharder._cleave(broker))
context = CleavingContext.load(broker)
self.assertTrue(context.misplaced_done)
self.assertFalse(context.cleaving_done)
self.assertEqual('', context.cursor)
self.assertEqual(9, context.cleave_to_row)
self.assertEqual(9, context.max_row)
self.assertEqual(0, context.ranges_done)
self.assertEqual(4, context.ranges_todo)
self.assertEqual(SHARDING, broker.get_db_state())
sharder._replicate_object.assert_not_called()
for db in expected_shard_dbs:
with annotate_failure(db):
self.assertFalse(os.path.exists(db))
for shard_range in broker.get_shard_ranges():
with annotate_failure(shard_range):
self.assertEqual(ShardRange.FOUND, shard_range.state)
# move first shard range to created state, first shard range is cleaved
shard_ranges[0].update_state(ShardRange.CREATED)
broker.merge_shard_ranges(shard_ranges[:1])
with self._mock_sharder(conf=conf) as sharder:
self.assertFalse(sharder._cleave(broker))
expected = {'attempted': 1, 'success': 1, 'failure': 0,
'min_time': mock.ANY, 'max_time': mock.ANY}
stats = self._assert_stats(expected, sharder, 'cleaved')
self.assertIsInstance(stats['min_time'], float)
self.assertIsInstance(stats['max_time'], float)
self.assertLessEqual(stats['min_time'], stats['max_time'])
self.assertEqual(SHARDING, broker.get_db_state())
sharder._replicate_object.assert_called_once_with(
0, expected_shard_dbs[0], 0)
shard_broker = ContainerBroker(expected_shard_dbs[0])
shard_own_sr = shard_broker.get_own_shard_range()
self.assertEqual(ShardRange.CLEAVED, shard_own_sr.state)
shard_info = shard_broker.get_info()
total_shard_stats['object_count'] += shard_info['object_count']
total_shard_stats['bytes_used'] += shard_info['bytes_used']
updated_shard_ranges = broker.get_shard_ranges()
self.assertEqual(4, len(updated_shard_ranges))
# update expected state and metadata, check cleaved shard range
shard_ranges[0].bytes_used = 20
shard_ranges[0].object_count = 2
shard_ranges[0].state = ShardRange.CLEAVED
self._check_shard_range(shard_ranges[0], updated_shard_ranges[0])
self._check_objects(objects[:2], expected_shard_dbs[0])
# other shard ranges should be unchanged
for i in range(1, len(shard_ranges)):
with annotate_failure(i):
self.assertFalse(os.path.exists(expected_shard_dbs[i]))
for i in range(1, len(updated_shard_ranges)):
with annotate_failure(i):
self.assertEqual(dict(shard_ranges[i]),
dict(updated_shard_ranges[i]))
context = CleavingContext.load(broker)
self.assertTrue(context.misplaced_done)
self.assertFalse(context.cleaving_done)
self.assertEqual('here', context.cursor)
self.assertEqual(9, context.cleave_to_row)
self.assertEqual(9, context.max_row)
self.assertEqual(1, context.ranges_done)
self.assertEqual(3, context.ranges_todo)
unlink_files(expected_shard_dbs)
# move more shard ranges to created state
for i in range(1, 4):
shard_ranges[i].update_state(ShardRange.CREATED)
broker.merge_shard_ranges(shard_ranges[1:4])
# replication of next shard range is not sufficiently successful
with self._mock_sharder(conf=conf) as sharder:
quorum = quorum_size(sharder.ring.replica_count)
successes = [True] * (quorum - 1)
fails = [False] * (sharder.ring.replica_count - len(successes))
responses = successes + fails
random.shuffle(responses)
sharder._replicate_object = mock.MagicMock(
side_effect=((False, responses),))
self.assertFalse(sharder._cleave(broker))
sharder._replicate_object.assert_called_once_with(
0, expected_shard_dbs[1], 0)
# cleaving state is unchanged
updated_shard_ranges = broker.get_shard_ranges()
self.assertEqual(4, len(updated_shard_ranges))
for i in range(1, len(updated_shard_ranges)):
with annotate_failure(i):
self.assertEqual(dict(shard_ranges[i]),
dict(updated_shard_ranges[i]))
context = CleavingContext.load(broker)
self.assertTrue(context.misplaced_done)
self.assertFalse(context.cleaving_done)
self.assertEqual('here', context.cursor)
self.assertEqual(9, context.cleave_to_row)
self.assertEqual(9, context.max_row)
self.assertEqual(1, context.ranges_done)
self.assertEqual(3, context.ranges_todo)
# try again, this time replication is sufficiently successful
with self._mock_sharder(conf=conf) as sharder:
successes = [True] * quorum
fails = [False] * (sharder.ring.replica_count - len(successes))
responses1 = successes + fails
responses2 = fails + successes
sharder._replicate_object = mock.MagicMock(
side_effect=((False, responses1), (False, responses2)))
self.assertFalse(sharder._cleave(broker))
expected = {'attempted': 2, 'success': 2, 'failure': 0,
'min_time': mock.ANY, 'max_time': mock.ANY}
stats = self._assert_stats(expected, sharder, 'cleaved')
self.assertIsInstance(stats['min_time'], float)
self.assertIsInstance(stats['max_time'], float)
self.assertLessEqual(stats['min_time'], stats['max_time'])
self.assertEqual(SHARDING, broker.get_db_state())
sharder._replicate_object.assert_has_calls(
[mock.call(0, db, 0) for db in expected_shard_dbs[1:3]]
)
for db in expected_shard_dbs[1:3]:
shard_broker = ContainerBroker(db)
shard_own_sr = shard_broker.get_own_shard_range()
self.assertEqual(ShardRange.CLEAVED, shard_own_sr.state)
shard_info = shard_broker.get_info()
total_shard_stats['object_count'] += shard_info['object_count']
total_shard_stats['bytes_used'] += shard_info['bytes_used']
updated_shard_ranges = broker.get_shard_ranges()
self.assertEqual(4, len(updated_shard_ranges))
# only 2 are cleaved per batch
# update expected state and metadata, check cleaved shard ranges
shard_ranges[1].bytes_used = 6
shard_ranges[1].object_count = 3
shard_ranges[1].state = ShardRange.CLEAVED
shard_ranges[2].bytes_used = 100
shard_ranges[2].object_count = 1
shard_ranges[2].state = ShardRange.CLEAVED
for i in range(0, 3):
with annotate_failure(i):
self._check_shard_range(
shard_ranges[i], updated_shard_ranges[i])
self._check_objects(objects[2:5], expected_shard_dbs[1])
self._check_objects(objects[5:6], expected_shard_dbs[2])
# other shard ranges should be unchanged
self.assertFalse(os.path.exists(expected_shard_dbs[0]))
for i, db in enumerate(expected_shard_dbs[3:], 3):
with annotate_failure(i):
self.assertFalse(os.path.exists(db))
for i, updated_shard_range in enumerate(updated_shard_ranges[3:], 3):
with annotate_failure(i):
self.assertEqual(dict(shard_ranges[i]),
dict(updated_shard_range))
context = CleavingContext.load(broker)
self.assertTrue(context.misplaced_done)
self.assertFalse(context.cleaving_done)
self.assertEqual('where', context.cursor)
self.assertEqual(9, context.cleave_to_row)
self.assertEqual(9, context.max_row)
self.assertEqual(3, context.ranges_done)
self.assertEqual(1, context.ranges_todo)
unlink_files(expected_shard_dbs)
# run cleave again - should process the fourth range
with self._mock_sharder(conf=conf) as sharder:
self.assertFalse(sharder._cleave(broker))
expected = {'attempted': 1, 'success': 1, 'failure': 0,
'min_time': mock.ANY, 'max_time': mock.ANY}
stats = self._assert_stats(expected, sharder, 'cleaved')
self.assertIsInstance(stats['min_time'], float)
self.assertIsInstance(stats['max_time'], float)
self.assertLessEqual(stats['min_time'], stats['max_time'])
self.assertEqual(SHARDING, broker.get_db_state())
sharder._replicate_object.assert_called_once_with(
0, expected_shard_dbs[3], 0)
shard_broker = ContainerBroker(expected_shard_dbs[3])
shard_own_sr = shard_broker.get_own_shard_range()
self.assertEqual(ShardRange.CLEAVED, shard_own_sr.state)
shard_info = shard_broker.get_info()
total_shard_stats['object_count'] += shard_info['object_count']
total_shard_stats['bytes_used'] += shard_info['bytes_used']
updated_shard_ranges = broker.get_shard_ranges()
self.assertEqual(4, len(updated_shard_ranges))
shard_ranges[3].bytes_used = 1000
shard_ranges[3].object_count = 1
shard_ranges[3].state = ShardRange.CLEAVED
for i in range(0, 4):
with annotate_failure(i):
self._check_shard_range(
shard_ranges[i], updated_shard_ranges[i])
# NB includes the deleted object
self._check_objects(objects[6:8], expected_shard_dbs[3])
# other shard ranges should be unchanged
for i, db in enumerate(expected_shard_dbs[:3]):
with annotate_failure(i):
self.assertFalse(os.path.exists(db))
self.assertFalse(os.path.exists(expected_shard_dbs[4]))
for i, updated_shard_range in enumerate(updated_shard_ranges[4:], 4):
with annotate_failure(i):
self.assertEqual(dict(shard_ranges[i]),
dict(updated_shard_range))
self.assertFalse(os.path.exists(expected_shard_dbs[4]))
context = CleavingContext.load(broker)
self.assertTrue(context.misplaced_done)
self.assertFalse(context.cleaving_done)
self.assertEqual('yonder', context.cursor)
self.assertEqual(9, context.cleave_to_row)
self.assertEqual(9, context.max_row)
self.assertEqual(4, context.ranges_done)
self.assertEqual(0, context.ranges_todo)
unlink_files(expected_shard_dbs)
# run cleave - should be a no-op, all existing ranges have been cleaved
with self._mock_sharder(conf=conf) as sharder:
self.assertFalse(sharder._cleave(broker))
self.assertEqual(SHARDING, broker.get_db_state())
sharder._replicate_object.assert_not_called()
# add final shard range - move this to ACTIVE state and update stats to
# simulate another replica having cleaved it and replicated its state
shard_ranges[4].update_state(ShardRange.ACTIVE)
shard_ranges[4].update_meta(2, 15)
broker.merge_shard_ranges(shard_ranges[4:])
with self._mock_sharder(conf=conf) as sharder:
self.assertTrue(sharder._cleave(broker))
expected = {'attempted': 1, 'success': 1, 'failure': 0,
'min_time': mock.ANY, 'max_time': mock.ANY}
stats = self._assert_stats(expected, sharder, 'cleaved')
self.assertIsInstance(stats['min_time'], float)
self.assertIsInstance(stats['max_time'], float)
self.assertLessEqual(stats['min_time'], stats['max_time'])
sharder._replicate_object.assert_called_once_with(
0, expected_shard_dbs[4], 0)
shard_broker = ContainerBroker(expected_shard_dbs[4])
shard_own_sr = shard_broker.get_own_shard_range()
self.assertEqual(ShardRange.ACTIVE, shard_own_sr.state)
shard_info = shard_broker.get_info()
total_shard_stats['object_count'] += shard_info['object_count']
total_shard_stats['bytes_used'] += shard_info['bytes_used']
updated_shard_ranges = broker.get_shard_ranges()
self.assertEqual(5, len(updated_shard_ranges))
# NB stats of the ACTIVE shard range should not be reset by cleaving
for i in range(0, 4):
with annotate_failure(i):
self._check_shard_range(
shard_ranges[i], updated_shard_ranges[i])
self.assertEqual(dict(shard_ranges[4]), dict(updated_shard_ranges[4]))
# object copied to shard
self._check_objects(objects[8:], expected_shard_dbs[4])
# other shard ranges should be unchanged
for i, db in enumerate(expected_shard_dbs[:4]):
with annotate_failure(i):
self.assertFalse(os.path.exists(db))
self.assertEqual(initial_root_info['object_count'],
total_shard_stats['object_count'])
self.assertEqual(initial_root_info['bytes_used'],
total_shard_stats['bytes_used'])
context = CleavingContext.load(broker)
self.assertTrue(context.misplaced_done)
self.assertTrue(context.cleaving_done)
self.assertEqual('', context.cursor)
self.assertEqual(9, context.cleave_to_row)
self.assertEqual(9, context.max_row)
self.assertEqual(5, context.ranges_done)
self.assertEqual(0, context.ranges_todo)
with self._mock_sharder(conf=conf) as sharder:
self.assertTrue(sharder._cleave(broker))
sharder._replicate_object.assert_not_called()
self.assertTrue(broker.set_sharded_state())
# run cleave - should be a no-op
with self._mock_sharder(conf=conf) as sharder:
self.assertTrue(sharder._cleave(broker))
sharder._replicate_object.assert_not_called()
def test_cleave_root(self):
self._check_cleave_root()
def test_cleave_root_listing_limit_one(self):
# force yield_objects to update its marker and call to the broker's
# get_objects() for each shard range, to check the marker moves on
self._check_cleave_root(conf={'cleave_row_batch_size': 1})
def test_cleave_root_ranges_change(self):
# verify that objects are not missed if shard ranges change between
# cleaving batches
broker = self._make_broker()
objects = [
('a', self.ts_encoded(), 10, 'text/plain', 'etag_a', 0, 0),
('b', self.ts_encoded(), 10, 'text/plain', 'etag_b', 0, 0),
('c', self.ts_encoded(), 1, 'text/plain', 'etag_c', 0, 0),
('d', self.ts_encoded(), 2, 'text/plain', 'etag_d', 0, 0),
('e', self.ts_encoded(), 3, 'text/plain', 'etag_e', 0, 0),
('f', self.ts_encoded(), 100, 'text/plain', 'etag_f', 0, 0),
('x', self.ts_encoded(), 0, '', '', 1, 0), # deleted
('z', self.ts_encoded(), 1000, 'text/plain', 'etag_z', 0, 0)
]
for obj in objects:
broker.put_object(*obj)
broker.enable_sharding(Timestamp.now())
shard_bounds = (('', 'd'), ('d', 'x'), ('x', ''))
shard_ranges = self._make_shard_ranges(
shard_bounds, state=ShardRange.CREATED)
expected_shard_dbs = []
for shard_range in shard_ranges:
db_hash = hash_path(shard_range.account, shard_range.container)
expected_shard_dbs.append(
os.path.join(self.tempdir, 'sda', 'containers', '0',
db_hash[-3:], db_hash, db_hash + '.db'))
broker.merge_shard_ranges(shard_ranges[:3])
self.assertTrue(broker.set_sharding_state())
# run cleave - first batch is cleaved
with self._mock_sharder() as sharder:
self.assertFalse(sharder._cleave(broker))
context = CleavingContext.load(broker)
self.assertTrue(context.misplaced_done)
self.assertFalse(context.cleaving_done)
self.assertEqual(shard_ranges[1].upper_str, context.cursor)
self.assertEqual(8, context.cleave_to_row)
self.assertEqual(8, context.max_row)
self.assertEqual(SHARDING, broker.get_db_state())
sharder._replicate_object.assert_has_calls(
[mock.call(0, db, 0) for db in expected_shard_dbs[:2]]
)
updated_shard_ranges = broker.get_shard_ranges()
self.assertEqual(3, len(updated_shard_ranges))
# first 2 shard ranges should have updated object count, bytes used and
# meta_timestamp
shard_ranges[0].bytes_used = 23
shard_ranges[0].object_count = 4
shard_ranges[0].state = ShardRange.CLEAVED
self._check_shard_range(shard_ranges[0], updated_shard_ranges[0])
shard_ranges[1].bytes_used = 103
shard_ranges[1].object_count = 2
shard_ranges[1].state = ShardRange.CLEAVED
self._check_shard_range(shard_ranges[1], updated_shard_ranges[1])
self._check_objects(objects[:4], expected_shard_dbs[0])
self._check_objects(objects[4:7], expected_shard_dbs[1])
self.assertFalse(os.path.exists(expected_shard_dbs[2]))
# third shard range should be unchanged - not yet cleaved
self.assertEqual(dict(shard_ranges[2]),
dict(updated_shard_ranges[2]))
context = CleavingContext.load(broker)
self.assertTrue(context.misplaced_done)
self.assertFalse(context.cleaving_done)
self.assertEqual(shard_ranges[1].upper_str, context.cursor)
self.assertEqual(8, context.cleave_to_row)
self.assertEqual(8, context.max_row)
# now change the shard ranges so that third consumes second
shard_ranges[1].set_deleted()
shard_ranges[2].lower = 'd'
shard_ranges[2].timestamp = Timestamp.now()
broker.merge_shard_ranges(shard_ranges[1:3])
# run cleave - should process the extended third (final) range
with self._mock_sharder() as sharder:
self.assertTrue(sharder._cleave(broker))
self.assertEqual(SHARDING, broker.get_db_state())
sharder._replicate_object.assert_called_once_with(
0, expected_shard_dbs[2], 0)
updated_shard_ranges = broker.get_shard_ranges()
self.assertEqual(2, len(updated_shard_ranges))
self._check_shard_range(shard_ranges[0], updated_shard_ranges[0])
# third shard range should now have updated object count, bytes used,
# including objects previously in the second shard range
shard_ranges[2].bytes_used = 1103
shard_ranges[2].object_count = 3
shard_ranges[2].state = ShardRange.CLEAVED
self._check_shard_range(shard_ranges[2], updated_shard_ranges[1])
self._check_objects(objects[4:8], expected_shard_dbs[2])
context = CleavingContext.load(broker)
self.assertTrue(context.misplaced_done)
self.assertTrue(context.cleaving_done)
self.assertEqual(shard_ranges[2].upper_str, context.cursor)
self.assertEqual(8, context.cleave_to_row)
self.assertEqual(8, context.max_row)
def test_cleave_root_empty_db_with_ranges(self):
broker = self._make_broker()
broker.enable_sharding(Timestamp.now())
shard_bounds = (('', 'd'), ('d', 'x'), ('x', ''))
shard_ranges = self._make_shard_ranges(
shard_bounds, state=ShardRange.CREATED)
broker.merge_shard_ranges(shard_ranges)
self.assertTrue(broker.set_sharding_state())
sharder_conf = {'cleave_batch_size': 1}
with self._mock_sharder(sharder_conf) as sharder:
self.assertTrue(sharder._cleave(broker))
info_lines = sharder.logger.get_lines_for_level('info')
expected_zero_obj = [line for line in info_lines
if " - zero objects found" in line]
self.assertEqual(len(expected_zero_obj), len(shard_bounds))
cleaving_context = CleavingContext.load(broker)
# even though there is a cleave_batch_size of 1, we don't count empty
# ranges when cleaving seeing as they aren't replicated
self.assertEqual(cleaving_context.ranges_done, 3)
self.assertEqual(cleaving_context.ranges_todo, 0)
self.assertTrue(cleaving_context.cleaving_done)
def test_cleave_root_empty_db_with_pre_existing_shard_db_handoff(self):
broker = self._make_broker()
broker.enable_sharding(Timestamp.now())
shard_bounds = (('', 'd'), ('d', 'x'), ('x', ''))
shard_ranges = self._make_shard_ranges(
shard_bounds, state=ShardRange.CREATED)
broker.merge_shard_ranges(shard_ranges)
self.assertTrue(broker.set_sharding_state())
sharder_conf = {'cleave_batch_size': 1}
with self._mock_sharder(sharder_conf) as sharder:
# pre-create a shard broker on a handoff location. This will force
# the sharder to not skip it but instead force to replicate it and
# use up a cleave_batch_size count.
sharder._get_shard_broker(shard_ranges[0], broker.root_path,
0)
self.assertFalse(sharder._cleave(broker))
info_lines = sharder.logger.get_lines_for_level('info')
expected_zero_obj = [line for line in info_lines
if " - zero objects found" in line]
self.assertEqual(len(expected_zero_obj), 1)
cleaving_context = CleavingContext.load(broker)
# even though there is a cleave_batch_size of 1, we don't count empty
# ranges when cleaving seeing as they aren't replicated
self.assertEqual(cleaving_context.ranges_done, 1)
self.assertEqual(cleaving_context.ranges_todo, 2)
self.assertFalse(cleaving_context.cleaving_done)
def test_cleave_shard(self):
broker = self._make_broker(account='.shards_a', container='shard_c')
own_shard_range = ShardRange(
broker.path, Timestamp.now(), 'here', 'where',
state=ShardRange.SHARDING, epoch=Timestamp.now())
broker.merge_shard_ranges([own_shard_range])
broker.set_sharding_sysmeta('Root', 'a/c')
self.assertFalse(broker.is_root_container()) # sanity check
objects = [
('m', self.ts_encoded(), 1, 'text/plain', 'etag_m', 0, 0),
('n', self.ts_encoded(), 2, 'text/plain', 'etag_n', 0, 0),
('there', self.ts_encoded(), 3, 'text/plain', 'etag_there', 0, 0),
('where', self.ts_encoded(), 100, 'text/plain', 'etag_where', 0,
0),
]
misplaced_objects = [
('a', self.ts_encoded(), 1, 'text/plain', 'etag_a', 0, 0),
('z', self.ts_encoded(), 100, 'text/plain', 'etag_z', 1, 0),
]
for obj in objects + misplaced_objects:
broker.put_object(*obj)
shard_bounds = (('here', 'there'),
('there', 'where'))
shard_ranges = self._make_shard_ranges(
shard_bounds, state=ShardRange.CREATED)
expected_shard_dbs = []
for shard_range in shard_ranges:
db_hash = hash_path(shard_range.account, shard_range.container)
expected_shard_dbs.append(
os.path.join(self.tempdir, 'sda', 'containers', '0',
db_hash[-3:], db_hash, db_hash + '.db'))
misplaced_bounds = (('', 'here'),
('where', ''))
misplaced_ranges = self._make_shard_ranges(
misplaced_bounds, state=ShardRange.ACTIVE)
misplaced_dbs = []
for shard_range in misplaced_ranges:
db_hash = hash_path(shard_range.account, shard_range.container)
misplaced_dbs.append(
os.path.join(self.tempdir, 'sda', 'containers', '0',
db_hash[-3:], db_hash, db_hash + '.db'))
broker.merge_shard_ranges(shard_ranges)
self.assertTrue(broker.set_sharding_state())
# run cleave - first range is cleaved but move of misplaced objects is
# not successful
sharder_conf = {'cleave_batch_size': 1}
with self._mock_sharder(sharder_conf) as sharder:
with mock.patch.object(
sharder, '_make_shard_range_fetcher',
return_value=lambda: iter(misplaced_ranges)):
# cause misplaced objects replication to not succeed
quorum = quorum_size(sharder.ring.replica_count)
successes = [True] * (quorum - 1)
fails = [False] * (sharder.ring.replica_count - len(successes))
responses = successes + fails
random.shuffle(responses)
bad_result = (False, responses)
ok_result = (True, [True] * sharder.ring.replica_count)
sharder._replicate_object = mock.MagicMock(
# result for misplaced, misplaced, cleave
side_effect=(bad_result, ok_result, ok_result))
self.assertFalse(sharder._cleave(broker))
context = CleavingContext.load(broker)
self.assertFalse(context.misplaced_done)
self.assertFalse(context.cleaving_done)
self.assertEqual(shard_ranges[0].upper_str, context.cursor)
self.assertEqual(6, context.cleave_to_row)
self.assertEqual(6, context.max_row)
self.assertEqual(SHARDING, broker.get_db_state())
sharder._replicate_object.assert_has_calls(
[mock.call(0, misplaced_dbs[0], 0),
mock.call(0, misplaced_dbs[1], 0),
mock.call(0, expected_shard_dbs[0], 0)])
shard_broker = ContainerBroker(expected_shard_dbs[0])
# NB cleaving a shard, state goes to CLEAVED not ACTIVE
shard_own_sr = shard_broker.get_own_shard_range()
self.assertEqual(ShardRange.CLEAVED, shard_own_sr.state)
updated_shard_ranges = broker.get_shard_ranges()
self.assertEqual(2, len(updated_shard_ranges))
# first shard range should have updated object count, bytes used and
# meta_timestamp
shard_ranges[0].bytes_used = 6
shard_ranges[0].object_count = 3
shard_ranges[0].state = ShardRange.CLEAVED
self._check_shard_range(shard_ranges[0], updated_shard_ranges[0])
self._check_objects(objects[:3], expected_shard_dbs[0])
self.assertFalse(os.path.exists(expected_shard_dbs[1]))
self._check_objects(misplaced_objects[:1], misplaced_dbs[0])
self._check_objects(misplaced_objects[1:], misplaced_dbs[1])
unlink_files(expected_shard_dbs)
unlink_files(misplaced_dbs)
# run cleave - second (final) range is cleaved; move this range to
# CLEAVED state and update stats to simulate another replica having
# cleaved it and replicated its state
shard_ranges[1].update_state(ShardRange.CLEAVED)
shard_ranges[1].update_meta(2, 15)
broker.merge_shard_ranges(shard_ranges[1:2])
with self._mock_sharder(sharder_conf) as sharder:
with mock.patch.object(
sharder, '_make_shard_range_fetcher',
return_value=lambda: iter(misplaced_ranges)):
self.assertTrue(sharder._cleave(broker))
context = CleavingContext.load(broker)
self.assertTrue(context.misplaced_done)
self.assertTrue(context.cleaving_done)
self.assertEqual(shard_ranges[1].upper_str, context.cursor)
self.assertEqual(6, context.cleave_to_row)
self.assertEqual(6, context.max_row)
self.assertEqual(SHARDING, broker.get_db_state())
sharder._replicate_object.assert_has_calls(
[mock.call(0, misplaced_dbs[0], 0),
mock.call(0, expected_shard_dbs[1], 0)])
shard_broker = ContainerBroker(expected_shard_dbs[1])
shard_own_sr = shard_broker.get_own_shard_range()
self.assertEqual(ShardRange.CLEAVED, shard_own_sr.state)
updated_shard_ranges = broker.get_shard_ranges()
self.assertEqual(2, len(updated_shard_ranges))
# second shard range should have updated object count, bytes used and
# meta_timestamp
self.assertEqual(dict(shard_ranges[1]), dict(updated_shard_ranges[1]))
self._check_objects(objects[3:], expected_shard_dbs[1])
self.assertFalse(os.path.exists(expected_shard_dbs[0]))
self._check_objects(misplaced_objects[:1], misplaced_dbs[0])
self.assertFalse(os.path.exists(misplaced_dbs[1]))
def test_cleave_shard_shrinking(self):
broker = self._make_broker(account='.shards_a', container='shard_c')
own_shard_range = ShardRange(
broker.path, next(self.ts_iter), 'here', 'where',
state=ShardRange.SHRINKING, epoch=next(self.ts_iter))
broker.merge_shard_ranges([own_shard_range])
broker.set_sharding_sysmeta('Root', 'a/c')
self.assertFalse(broker.is_root_container()) # sanity check
objects = [
('there', self.ts_encoded(), 3, 'text/plain', 'etag_there', 0, 0),
('where', self.ts_encoded(), 100, 'text/plain', 'etag_where', 0,
0),
]
for obj in objects:
broker.put_object(*obj)
acceptor_epoch = next(self.ts_iter)
acceptor = ShardRange('.shards_a/acceptor', Timestamp.now(),
'here', 'yonder', '1000', '11111',
state=ShardRange.ACTIVE, epoch=acceptor_epoch)
db_hash = hash_path(acceptor.account, acceptor.container)
# NB expected cleave db includes acceptor epoch
expected_shard_db = os.path.join(
self.tempdir, 'sda', 'containers', '0', db_hash[-3:], db_hash,
'%s_%s.db' % (db_hash, acceptor_epoch.internal))
broker.merge_shard_ranges([acceptor])
broker.set_sharding_state()
# run cleave
with self._mock_sharder() as sharder:
self.assertTrue(sharder._cleave(broker))
context = CleavingContext.load(broker)
self.assertTrue(context.misplaced_done)
self.assertTrue(context.cleaving_done)
self.assertEqual(acceptor.upper_str, context.cursor)
self.assertEqual(2, context.cleave_to_row)
self.assertEqual(2, context.max_row)
self.assertEqual(SHARDING, broker.get_db_state())
sharder._replicate_object.assert_has_calls(
[mock.call(0, expected_shard_db, 0)])
shard_broker = ContainerBroker(expected_shard_db)
# NB when cleaving a shard container to a larger acceptor namespace
# then expect the shard broker's own shard range to reflect that of the
# acceptor shard range rather than being set to CLEAVED.
self.assertEqual(
ShardRange.ACTIVE, shard_broker.get_own_shard_range().state)
updated_shard_ranges = broker.get_shard_ranges()
self.assertEqual(1, len(updated_shard_ranges))
self.assertEqual(dict(acceptor), dict(updated_shard_ranges[0]))
# shard range should have unmodified acceptor, bytes used and
# meta_timestamp
self._check_objects(objects, expected_shard_db)
def test_cleave_repeated(self):
# verify that if new objects are merged into retiring db after cleaving
# started then cleaving will repeat but only new objects are cleaved
# in the repeated cleaving pass
broker = self._make_broker()
objects = [
('obj%03d' % i, next(self.ts_iter), 1, 'text/plain', 'etag', 0, 0)
for i in range(10)
]
new_objects = [
(name, next(self.ts_iter), 1, 'text/plain', 'etag', 0, 0)
for name in ('alpha', 'zeta')
]
for obj in objects:
broker.put_object(*obj)
broker._commit_puts()
broker.enable_sharding(Timestamp.now())
shard_bounds = (('', 'obj004'), ('obj004', ''))
shard_ranges = self._make_shard_ranges(
shard_bounds, state=ShardRange.CREATED)
expected_shard_dbs = []
for shard_range in shard_ranges:
db_hash = hash_path(shard_range.account, shard_range.container)
expected_shard_dbs.append(
os.path.join(self.tempdir, 'sda', 'containers', '0',
db_hash[-3:], db_hash, db_hash + '.db'))
broker.merge_shard_ranges(shard_ranges)
self.assertTrue(broker.set_sharding_state())
old_broker = broker.get_brokers()[0]
node = {'ip': '1.2.3.4', 'port': 6040, 'device': 'sda5', 'id': '2',
'index': 0}
calls = []
key = ('name', 'created_at', 'size', 'content_type', 'etag', 'deleted')
def mock_replicate_object(part, db, node_id):
# merge new objects between cleave of first and second shard ranges
if not calls:
old_broker.merge_items(
[dict(zip(key, obj)) for obj in new_objects])
calls.append((part, db, node_id))
return True, [True, True, True]
with self._mock_sharder() as sharder:
sharder._audit_container = mock.MagicMock()
sharder._replicate_object = mock_replicate_object
sharder._process_broker(broker, node, 99)
# sanity check - the new objects merged into the old db
self.assertFalse(broker.get_objects())
self.assertEqual(12, len(old_broker.get_objects()))
self.assertEqual(SHARDING, broker.get_db_state())
self.assertEqual(ShardRange.SHARDING,
broker.get_own_shard_range().state)
self.assertEqual([(0, expected_shard_dbs[0], 0),
(0, expected_shard_dbs[1], 0)], calls)
# check shard ranges were updated to CLEAVED
updated_shard_ranges = broker.get_shard_ranges()
# 'alpha' was not in table when first shard was cleaved
shard_ranges[0].bytes_used = 5
shard_ranges[0].object_count = 5
shard_ranges[0].state = ShardRange.CLEAVED
self._check_shard_range(shard_ranges[0], updated_shard_ranges[0])
self._check_objects(objects[:5], expected_shard_dbs[0])
# 'zeta' was in table when second shard was cleaved
shard_ranges[1].bytes_used = 6
shard_ranges[1].object_count = 6
shard_ranges[1].state = ShardRange.CLEAVED
self._check_shard_range(shard_ranges[1], updated_shard_ranges[1])
self._check_objects(objects[5:] + new_objects[1:],
expected_shard_dbs[1])
context = CleavingContext.load(broker)
self.assertFalse(context.misplaced_done)
self.assertFalse(context.cleaving_done)
self.assertEqual('', context.cursor)
self.assertEqual(10, context.cleave_to_row)
self.assertEqual(12, context.max_row) # note that max row increased
lines = sharder.logger.get_lines_for_level('warning')
self.assertIn('Repeat cleaving required', lines[0])
self.assertFalse(lines[1:])
unlink_files(expected_shard_dbs)
# repeat the cleaving - the newer objects get cleaved
with self._mock_sharder() as sharder:
sharder._audit_container = mock.MagicMock()
sharder._process_broker(broker, node, 99)
# this time the sharding completed
self.assertEqual(SHARDED, broker.get_db_state())
self.assertEqual(ShardRange.SHARDED,
broker.get_own_shard_range().state)
sharder._replicate_object.assert_has_calls(
[mock.call(0, expected_shard_dbs[0], 0),
mock.call(0, expected_shard_dbs[1], 0)])
# shard ranges are now ACTIVE - stats not updated by cleaving
updated_shard_ranges = broker.get_shard_ranges()
shard_ranges[0].state = ShardRange.ACTIVE
self._check_shard_range(shard_ranges[0], updated_shard_ranges[0])
self._check_objects(new_objects[:1], expected_shard_dbs[0])
# both new objects are included in repeat cleaving but no older objects
shard_ranges[1].state = ShardRange.ACTIVE
self._check_shard_range(shard_ranges[1], updated_shard_ranges[1])
self._check_objects(new_objects[1:], expected_shard_dbs[1])
self.assertFalse(sharder.logger.get_lines_for_level('warning'))
def test_cleave_multiple_storage_policies(self):
# verify that objects in all storage policies are cleaved
broker = self._make_broker()
# add objects in multiple policies
objects = [{'name': 'obj_%03d' % i,
'created_at': Timestamp.now().normal,
'content_type': 'text/plain',
'etag': 'etag_%d' % i,
'size': 1024 * i,
'deleted': i % 2,
'storage_policy_index': i % 2,
} for i in range(1, 8)]
# merge_items mutates items
broker.merge_items([dict(obj) for obj in objects])
broker.enable_sharding(Timestamp.now())
shard_ranges = self._make_shard_ranges(
(('', 'obj_004'), ('obj_004', '')), state=ShardRange.CREATED)
expected_shard_dbs = []
for shard_range in shard_ranges:
db_hash = hash_path(shard_range.account, shard_range.container)
expected_shard_dbs.append(
os.path.join(self.tempdir, 'sda', 'containers', '0',
db_hash[-3:], db_hash, db_hash + '.db'))
broker.merge_shard_ranges(shard_ranges)
self.assertTrue(broker.set_sharding_state())
node = {'ip': '1.2.3.4', 'port': 6040, 'device': 'sda5', 'id': '2',
'index': 0}
with self._mock_sharder() as sharder:
sharder._audit_container = mock.MagicMock()
sharder._process_broker(broker, node, 99)
# check shard ranges were updated to ACTIVE
self.assertEqual([ShardRange.ACTIVE] * 2,
[sr.state for sr in broker.get_shard_ranges()])
shard_broker = ContainerBroker(expected_shard_dbs[0])
actual_objects = shard_broker.get_objects()
self.assertEqual(objects[:4], actual_objects)
shard_broker = ContainerBroker(expected_shard_dbs[1])
actual_objects = shard_broker.get_objects()
self.assertEqual(objects[4:], actual_objects)
def test_cleave_insufficient_replication(self):
# verify that if replication of a cleaved shard range fails then rows
# are not merged again to the existing shard db
broker = self._make_broker()
retiring_db_id = broker.get_info()['id']
objects = [
{'name': 'obj%03d' % i, 'created_at': next(self.ts_iter),
'size': 1, 'content_type': 'text/plain', 'etag': 'etag',
'deleted': 0, 'storage_policy_index': 0}
for i in range(10)
]
broker.merge_items([dict(obj) for obj in objects])
broker._commit_puts()
broker.enable_sharding(Timestamp.now())
shard_bounds = (('', 'obj004'), ('obj004', ''))
shard_ranges = self._make_shard_ranges(
shard_bounds, state=ShardRange.CREATED)
expected_shard_dbs = []
for shard_range in shard_ranges:
db_hash = hash_path(shard_range.account, shard_range.container)
expected_shard_dbs.append(
os.path.join(self.tempdir, 'sda', 'containers', '0',
db_hash[-3:], db_hash, db_hash + '.db'))
broker.merge_shard_ranges(shard_ranges)
self.assertTrue(broker.set_sharding_state())
new_object = {'name': 'alpha', 'created_at': next(self.ts_iter),
'size': 0, 'content_type': 'text/plain', 'etag': 'etag',
'deleted': 0, 'storage_policy_index': 0}
broker.merge_items([dict(new_object)])
node = {'ip': '1.2.3.4', 'port': 6040, 'device': 'sda5', 'id': '2',
'index': 0}
orig_merge_items = ContainerBroker.merge_items
def mock_merge_items(broker, items):
merge_items_calls.append((broker.path,
# merge mutates item so make a copy
[dict(item) for item in items]))
orig_merge_items(broker, items)
# first shard range cleaved but fails to replicate
merge_items_calls = []
with mock.patch('swift.container.backend.ContainerBroker.merge_items',
mock_merge_items):
with self._mock_sharder() as sharder:
sharder._replicate_object = mock.MagicMock(
return_value=(False, [False, False, True]))
sharder._audit_container = mock.MagicMock()
sharder._process_broker(broker, node, 99)
self.assertEqual(SHARDING, broker.get_db_state())
self.assertEqual(ShardRange.SHARDING,
broker.get_own_shard_range().state)
self._assert_shard_ranges_equal(shard_ranges,
broker.get_shard_ranges())
# first shard range cleaved to shard broker
self.assertEqual([(shard_ranges[0].name, objects[:5])],
merge_items_calls)
# replication of first shard range fails - no more shards attempted
sharder._replicate_object.assert_called_once_with(
0, expected_shard_dbs[0], 0)
# shard broker has sync points
shard_broker = ContainerBroker(expected_shard_dbs[0])
self.assertEqual(
[{'remote_id': retiring_db_id, 'sync_point': len(objects)}],
shard_broker.get_syncs())
self.assertEqual(objects[:5], shard_broker.get_objects())
# first shard range replicates ok, no new merges required, second is
# cleaved but fails to replicate
merge_items_calls = []
with mock.patch('swift.container.backend.ContainerBroker.merge_items',
mock_merge_items), self._mock_sharder() as sharder:
sharder._replicate_object = mock.MagicMock(
side_effect=[(False, [False, True, True]),
(False, [False, False, True])])
sharder._audit_container = mock.MagicMock()
sharder._process_broker(broker, node, 99)
self.assertEqual(SHARDING, broker.get_db_state())
self.assertEqual(ShardRange.SHARDING,
broker.get_own_shard_range().state)
broker_shard_ranges = broker.get_shard_ranges()
shard_ranges[0].object_count = 5
shard_ranges[0].bytes_used = sum(obj['size'] for obj in objects[:5])
shard_ranges[0].state = ShardRange.CLEAVED
self._check_shard_range(shard_ranges[0], broker_shard_ranges[0])
# second shard range still in created state
self._assert_shard_ranges_equal([shard_ranges[1]],
[broker_shard_ranges[1]])
# only second shard range rows were merged to shard db
self.assertEqual([(shard_ranges[1].name, objects[5:])],
merge_items_calls)
sharder._replicate_object.assert_has_calls(
[mock.call(0, expected_shard_dbs[0], 0),
mock.call(0, expected_shard_dbs[1], 0)])
# shard broker has sync points
shard_broker = ContainerBroker(expected_shard_dbs[1])
self.assertEqual(
[{'remote_id': retiring_db_id, 'sync_point': len(objects)}],
shard_broker.get_syncs())
self.assertEqual(objects[5:], shard_broker.get_objects())
# repeat - second shard range cleaves fully because its previously
# cleaved shard db no longer exists
unlink_files(expected_shard_dbs)
merge_items_calls = []
with mock.patch('swift.container.backend.ContainerBroker.merge_items',
mock_merge_items):
with self._mock_sharder() as sharder:
sharder._replicate_object = mock.MagicMock(
side_effect=[(True, [True, True, True]), # misplaced obj
(False, [False, True, True])])
sharder._audit_container = mock.MagicMock()
sharder._process_broker(broker, node, 99)
self.assertEqual(SHARDED, broker.get_db_state())
self.assertEqual(ShardRange.SHARDED,
broker.get_own_shard_range().state)
broker_shard_ranges = broker.get_shard_ranges()
shard_ranges[1].object_count = 5
shard_ranges[1].bytes_used = sum(obj['size'] for obj in objects[5:])
shard_ranges[1].state = ShardRange.ACTIVE
self._check_shard_range(shard_ranges[1], broker_shard_ranges[1])
# second shard range rows were merged to shard db again
self.assertEqual([(shard_ranges[0].name, [new_object]),
(shard_ranges[1].name, objects[5:])],
merge_items_calls)
sharder._replicate_object.assert_has_calls(
[mock.call(0, expected_shard_dbs[0], 0),
mock.call(0, expected_shard_dbs[1], 0)])
# first shard broker was created by misplaced object - no sync point
shard_broker = ContainerBroker(expected_shard_dbs[0])
self.assertFalse(shard_broker.get_syncs())
self.assertEqual([new_object], shard_broker.get_objects())
# second shard broker has sync points
shard_broker = ContainerBroker(expected_shard_dbs[1])
self.assertEqual(
[{'remote_id': retiring_db_id, 'sync_point': len(objects)}],
shard_broker.get_syncs())
self.assertEqual(objects[5:], shard_broker.get_objects())
def test_shard_replication_quorum_failures(self):
broker = self._make_broker()
objects = [
{'name': 'obj%03d' % i, 'created_at': next(self.ts_iter),
'size': 1, 'content_type': 'text/plain', 'etag': 'etag',
'deleted': 0, 'storage_policy_index': 0}
for i in range(10)
]
broker.merge_items([dict(obj) for obj in objects])
broker._commit_puts()
shard_bounds = (('', 'obj002'), ('obj002', 'obj004'),
('obj004', 'obj006'), ('obj006', ''))
shard_ranges = self._make_shard_ranges(
shard_bounds, state=ShardRange.CREATED)
expected_shard_dbs = []
for shard_range in shard_ranges:
db_hash = hash_path(shard_range.account, shard_range.container)
expected_shard_dbs.append(
os.path.join(self.tempdir, 'sda', 'containers', '0',
db_hash[-3:], db_hash, db_hash + '.db'))
broker.enable_sharding(Timestamp.now())
broker.merge_shard_ranges(shard_ranges)
self.assertTrue(broker.set_sharding_state())
node = {'ip': '1.2.3.4', 'port': 6040, 'device': 'sda5', 'id': '2',
'index': 0}
with self._mock_sharder({'shard_replication_quorum': 3}) as sharder:
sharder._replicate_object = mock.MagicMock(
side_effect=[(False, [False, True, True]),
(False, [False, False, True])])
sharder._audit_container = mock.MagicMock()
sharder._process_broker(broker, node, 99)
# replication of first shard range fails - no more shards attempted
self.assertEqual(SHARDING, broker.get_db_state())
self.assertEqual(ShardRange.SHARDING,
broker.get_own_shard_range().state)
sharder._replicate_object.assert_called_once_with(
0, expected_shard_dbs[0], 0)
self.assertEqual([ShardRange.CREATED] * 4,
[sr.state for sr in broker.get_shard_ranges()])
# and again with a chilled out quorom, so cleaving moves onto second
# shard range which fails to reach even chilled quorum
with self._mock_sharder({'shard_replication_quorum': 1}) as sharder:
sharder._replicate_object = mock.MagicMock(
side_effect=[(False, [False, False, True]),
(False, [False, False, False])])
sharder._audit_container = mock.MagicMock()
sharder._process_broker(broker, node, 99)
self.assertEqual(SHARDING, broker.get_db_state())
self.assertEqual(ShardRange.SHARDING,
broker.get_own_shard_range().state)
self.assertEqual(sharder._replicate_object.call_args_list, [
mock.call(0, expected_shard_dbs[0], 0),
mock.call(0, expected_shard_dbs[1], 0),
])
self.assertEqual(
[ShardRange.CLEAVED, ShardRange.CREATED, ShardRange.CREATED,
ShardRange.CREATED],
[sr.state for sr in broker.get_shard_ranges()])
# now pretend another node successfully cleaved the second shard range,
# but this node still fails to replicate so still cannot move on
shard_ranges[1].update_state(ShardRange.CLEAVED)
broker.merge_shard_ranges(shard_ranges[1])
with self._mock_sharder({'shard_replication_quorum': 1}) as sharder:
sharder._replicate_object = mock.MagicMock(
side_effect=[(False, [False, False, False])])
sharder._audit_container = mock.MagicMock()
sharder._process_broker(broker, node, 99)
self.assertEqual(SHARDING, broker.get_db_state())
self.assertEqual(ShardRange.SHARDING,
broker.get_own_shard_range().state)
sharder._replicate_object.assert_called_once_with(
0, expected_shard_dbs[1], 0)
self.assertEqual(
[ShardRange.CLEAVED, ShardRange.CLEAVED, ShardRange.CREATED,
ShardRange.CREATED],
[sr.state for sr in broker.get_shard_ranges()])
# until a super-chilled quorum is used - but even then there must have
# been an attempt to replicate
with self._mock_sharder(
{'shard_replication_quorum': 1,
'existing_shard_replication_quorum': 0}) as sharder:
sharder._replicate_object = mock.MagicMock(
side_effect=[(False, [])]) # maybe shard db was deleted
sharder._audit_container = mock.MagicMock()
sharder._process_broker(broker, node, 99)
self.assertEqual(SHARDING, broker.get_db_state())
self.assertEqual(ShardRange.SHARDING,
broker.get_own_shard_range().state)
sharder._replicate_object.assert_called_once_with(
0, expected_shard_dbs[1], 0)
self.assertEqual(
[ShardRange.CLEAVED, ShardRange.CLEAVED, ShardRange.CREATED,
ShardRange.CREATED],
[sr.state for sr in broker.get_shard_ranges()])
# next pass - the second shard replication is attempted and fails, but
# that's ok because another node has cleaved it and
# existing_shard_replication_quorum is zero
with self._mock_sharder(
{'shard_replication_quorum': 1,
'existing_shard_replication_quorum': 0}) as sharder:
sharder._replicate_object = mock.MagicMock(
side_effect=[(False, [False, False, False]),
(False, [False, True, False])])
sharder._audit_container = mock.MagicMock()
sharder._process_broker(broker, node, 99)
self.assertEqual(SHARDING, broker.get_db_state())
self.assertEqual(ShardRange.SHARDING,
broker.get_own_shard_range().state)
self.assertEqual(sharder._replicate_object.call_args_list, [
mock.call(0, expected_shard_dbs[1], 0),
mock.call(0, expected_shard_dbs[2], 0),
])
self.assertEqual([ShardRange.CLEAVED] * 3 + [ShardRange.CREATED],
[sr.state for sr in broker.get_shard_ranges()])
self.assertEqual(1, sharder.shard_replication_quorum)
self.assertEqual(0, sharder.existing_shard_replication_quorum)
# crazy replication quorums will be capped to replica_count
with self._mock_sharder(
{'shard_replication_quorum': 99,
'existing_shard_replication_quorum': 99}) as sharder:
sharder._replicate_object = mock.MagicMock(
side_effect=[(False, [False, True, True])])
sharder._audit_container = mock.MagicMock()
sharder._process_broker(broker, node, 99)
self.assertEqual(SHARDING, broker.get_db_state())
self.assertEqual(ShardRange.SHARDING,
broker.get_own_shard_range().state)
sharder._replicate_object.assert_called_once_with(
0, expected_shard_dbs[3], 0)
self.assertEqual([ShardRange.CLEAVED] * 3 + [ShardRange.CREATED],
[sr.state for sr in broker.get_shard_ranges()])
self.assertEqual(3, sharder.shard_replication_quorum)
self.assertEqual(3, sharder.existing_shard_replication_quorum)
# ...and progress is still made if replication fully succeeds
with self._mock_sharder(
{'shard_replication_quorum': 99,
'existing_shard_replication_quorum': 99}) as sharder:
sharder._replicate_object = mock.MagicMock(
side_effect=[(True, [True, True, True])])
sharder._audit_container = mock.MagicMock()
sharder._process_broker(broker, node, 99)
self.assertEqual(SHARDED, broker.get_db_state())
self.assertEqual(ShardRange.SHARDED,
broker.get_own_shard_range().state)
sharder._replicate_object.assert_called_once_with(
0, expected_shard_dbs[3], 0)
self.assertEqual([ShardRange.ACTIVE] * 4,
[sr.state for sr in broker.get_shard_ranges()])
warnings = sharder.logger.get_lines_for_level('warning')
self.assertIn(
'shard_replication_quorum of 99 exceeds replica count',
warnings[0])
self.assertIn(
'existing_shard_replication_quorum of 99 exceeds replica count',
warnings[1])
self.assertEqual(3, sharder.shard_replication_quorum)
self.assertEqual(3, sharder.existing_shard_replication_quorum)
def test_cleave_to_existing_shard_db(self):
# verify that when cleaving to an already existing shard db
def replicate(node, from_broker, part):
# short circuit replication
rpc = replicator.ContainerReplicatorRpc(
self.tempdir, DATADIR, ContainerBroker, mount_check=False)
fake_repl_connection = attach_fake_replication_rpc(rpc)
with mock.patch('swift.common.db_replicator.ReplConnection',
fake_repl_connection):
with mock.patch('swift.common.db_replicator.ring.Ring',
lambda *args, **kwargs: FakeRing()):
daemon = replicator.ContainerReplicator({})
info = from_broker.get_replication_info()
success = daemon._repl_to_node(
node, from_broker, part, info)
self.assertTrue(success)
orig_merge_items = ContainerBroker.merge_items
def mock_merge_items(broker, items):
# capture merge_items calls
merge_items_calls.append((broker.path,
# merge mutates item so make a copy
[dict(item) for item in items]))
orig_merge_items(broker, items)
objects = [
{'name': 'obj%03d' % i, 'created_at': next(self.ts_iter),
'size': 1, 'content_type': 'text/plain', 'etag': 'etag',
'deleted': 0, 'storage_policy_index': 0}
for i in range(10)
]
# local db gets 4 objects
local_broker = self._make_broker()
local_broker.merge_items([dict(obj) for obj in objects[2:6]])
local_broker._commit_puts()
local_retiring_db_id = local_broker.get_info()['id']
# remote db gets 5 objects
remote_broker = self._make_broker(device='sdb')
remote_broker.merge_items([dict(obj) for obj in objects[2:7]])
remote_broker._commit_puts()
remote_retiring_db_id = remote_broker.get_info()['id']
local_node = {'ip': '1.2.3.4', 'port': 6040, 'device': 'sda',
'id': '2', 'index': 0, 'replication_ip': '1.2.3.4',
'replication_port': 6040}
remote_node = {'ip': '1.2.3.5', 'port': 6040, 'device': 'sdb',
'id': '3', 'index': 1, 'replication_ip': '1.2.3.5',
'replication_port': 6040}
# remote db replicates to local, bringing local db's total to 5 objects
self.assertNotEqual(local_broker.get_objects(),
remote_broker.get_objects())
replicate(local_node, remote_broker, 0)
self.assertEqual(local_broker.get_objects(),
remote_broker.get_objects())
# local db gets 2 new objects, bringing its total to 7
local_broker.merge_items([dict(obj) for obj in objects[1:2]])
local_broker.merge_items([dict(obj) for obj in objects[7:8]])
# local db gets shard ranges
own_shard_range = local_broker.get_own_shard_range()
now = Timestamp.now()
own_shard_range.update_state(ShardRange.SHARDING, state_timestamp=now)
own_shard_range.epoch = now
shard_ranges = self._make_shard_ranges(
(('', 'obj004'), ('obj004', '')), state=ShardRange.CREATED)
local_broker.merge_shard_ranges([own_shard_range] + shard_ranges)
self.assertTrue(local_broker.set_sharding_state())
# local db shards
merge_items_calls = []
with mock.patch('swift.container.backend.ContainerBroker.merge_items',
mock_merge_items):
with self._mock_sharder() as sharder:
sharder._replicate_object = mock.MagicMock(
return_value=(True, [True, True, True]))
sharder._audit_container = mock.MagicMock()
sharder._process_broker(local_broker, local_node, 0)
# all objects merged from local to shard ranges
self.assertEqual([(shard_ranges[0].name, objects[1:5]),
(shard_ranges[1].name, objects[5:8])],
merge_items_calls)
# shard brokers have sync points
expected_shard_dbs = []
for shard_range in shard_ranges:
db_hash = hash_path(shard_range.account, shard_range.container)
expected_shard_dbs.append(
os.path.join(self.tempdir, 'sda', 'containers', '0',
db_hash[-3:], db_hash, db_hash + '.db'))
shard_broker = ContainerBroker(expected_shard_dbs[0])
self.assertEqual(
[{'remote_id': local_retiring_db_id, 'sync_point': 7},
{'remote_id': remote_retiring_db_id, 'sync_point': 5}],
shard_broker.get_syncs())
self.assertEqual(objects[1:5], shard_broker.get_objects())
shard_broker = ContainerBroker(expected_shard_dbs[1])
self.assertEqual(
[{'remote_id': local_retiring_db_id, 'sync_point': 7},
{'remote_id': remote_retiring_db_id, 'sync_point': 5}],
shard_broker.get_syncs())
self.assertEqual(objects[5:8], shard_broker.get_objects())
# local db replicates to remote, so remote now has shard ranges
# note: no objects replicated because local is sharded
self.assertFalse(remote_broker.get_shard_ranges())
replicate(remote_node, local_broker, 0)
self._assert_shard_ranges_equal(local_broker.get_shard_ranges(),
remote_broker.get_shard_ranges())
# remote db gets 3 new objects, bringing its total to 8
remote_broker.merge_items([dict(obj) for obj in objects[:1]])
remote_broker.merge_items([dict(obj) for obj in objects[8:]])
merge_items_calls = []
with mock.patch('swift.container.backend.ContainerBroker.merge_items',
mock_merge_items):
with self._mock_sharder() as sharder:
sharder._replicate_object = mock.MagicMock(
return_value=(True, [True, True, True]))
sharder._audit_container = mock.MagicMock()
sharder._process_broker(remote_broker, remote_node, 0)
# shard brokers have sync points for the remote db so only new objects
# are merged from remote broker to shard brokers
self.assertEqual([(shard_ranges[0].name, objects[:1]),
(shard_ranges[1].name, objects[8:])],
merge_items_calls)
# sync points are updated
shard_broker = ContainerBroker(expected_shard_dbs[0])
self.assertEqual(
[{'remote_id': local_retiring_db_id, 'sync_point': 7},
{'remote_id': remote_retiring_db_id, 'sync_point': 8}],
shard_broker.get_syncs())
self.assertEqual(objects[:5], shard_broker.get_objects())
shard_broker = ContainerBroker(expected_shard_dbs[1])
self.assertEqual(
[{'remote_id': local_retiring_db_id, 'sync_point': 7},
{'remote_id': remote_retiring_db_id, 'sync_point': 8}],
shard_broker.get_syncs())
self.assertEqual(objects[5:], shard_broker.get_objects())
def _check_complete_sharding(self, account, container, shard_bounds):
broker = self._make_sharding_broker(
account=account, container=container, shard_bounds=shard_bounds)
obj = {'name': 'obj', 'created_at': next(self.ts_iter).internal,
'size': 14, 'content_type': 'text/plain', 'etag': 'an etag',
'deleted': 0}
broker.get_brokers()[0].merge_items([obj])
self.assertEqual(2, len(broker.db_files)) # sanity check
def check_not_complete():
with self._mock_sharder() as sharder:
self.assertFalse(sharder._complete_sharding(broker))
warning_lines = sharder.logger.get_lines_for_level('warning')
self.assertIn(
'Repeat cleaving required for %r' % broker.db_files[0],
warning_lines[0])
self.assertFalse(warning_lines[1:])
sharder.logger.clear()
context = CleavingContext.load(broker)
self.assertFalse(context.cleaving_done)
self.assertFalse(context.misplaced_done)
self.assertEqual('', context.cursor)
self.assertEqual(ShardRange.SHARDING,
broker.get_own_shard_range().state)
for shard_range in broker.get_shard_ranges():
self.assertEqual(ShardRange.CLEAVED, shard_range.state)
self.assertEqual(SHARDING, broker.get_db_state())
# no cleave context progress
check_not_complete()
# cleaving_done is False
context = CleavingContext.load(broker)
self.assertEqual(1, context.max_row)
context.cleave_to_row = 1 # pretend all rows have been cleaved
context.cleaving_done = False
context.misplaced_done = True
context.store(broker)
check_not_complete()
# misplaced_done is False
context.misplaced_done = False
context.cleaving_done = True
context.store(broker)
check_not_complete()
# modified db max row
old_broker = broker.get_brokers()[0]
obj = {'name': 'obj', 'created_at': next(self.ts_iter).internal,
'size': 14, 'content_type': 'text/plain', 'etag': 'an etag',
'deleted': 1}
old_broker.merge_items([obj])
self.assertGreater(old_broker.get_max_row(), context.max_row)
context.misplaced_done = True
context.cleaving_done = True
context.store(broker)
check_not_complete()
# db id changes
broker.get_brokers()[0].newid('fake_remote_id')
context.cleave_to_row = 2 # pretend all rows have been cleaved, again
context.store(broker)
check_not_complete()
# context ok
context = CleavingContext.load(broker)
context.cleave_to_row = context.max_row
context.misplaced_done = True
context.cleaving_done = True
context.store(broker)
with self._mock_sharder() as sharder:
self.assertTrue(sharder._complete_sharding(broker))
self.assertEqual(SHARDED, broker.get_db_state())
self.assertEqual(ShardRange.SHARDED,
broker.get_own_shard_range().state)
for shard_range in broker.get_shard_ranges():
self.assertEqual(ShardRange.ACTIVE, shard_range.state)
warning_lines = sharder.logger.get_lines_for_level('warning')
self.assertFalse(warning_lines)
sharder.logger.clear()
return broker
def test_complete_sharding_root(self):
broker = self._check_complete_sharding(
'a', 'c', (('', 'mid'), ('mid', '')))
self.assertEqual(0, broker.get_own_shard_range().deleted)
def test_complete_sharding_shard(self):
broker = self._check_complete_sharding(
'.shards_', 'shard_c', (('l', 'mid'), ('mid', 'u')))
self.assertEqual(1, broker.get_own_shard_range().deleted)
def test_identify_sharding_old_style_candidate(self):
brokers = [self._make_broker(container='c%03d' % i) for i in range(6)]
for broker in brokers:
broker.set_sharding_sysmeta('Root', 'a/c')
node = {'index': 2}
# containers are all empty
with self._mock_sharder() as sharder:
for broker in brokers:
sharder._identify_sharding_candidate(broker, node)
expected_stats = {}
self._assert_stats(expected_stats, sharder, 'sharding_candidates')
objects = [
['obj%3d' % i, next(self.ts_iter).internal, i, 'text/plain',
'etag%s' % i, 0] for i in range(160)]
# one container has 100 objects, which is below the sharding threshold
for obj in objects[:100]:
brokers[0].put_object(*obj)
conf = {'recon_cache_path': self.tempdir}
with self._mock_sharder(conf=conf) as sharder:
for broker in brokers:
sharder._identify_sharding_candidate(broker, node)
self.assertFalse(sharder.sharding_candidates)
expected_recon = {
'found': 0,
'top': []}
sharder._report_stats()
self._assert_recon_stats(
expected_recon, sharder, 'sharding_candidates')
# reduce the sharding threshold and the container is reported
conf = {'shard_container_threshold': 100,
'recon_cache_path': self.tempdir}
with self._mock_sharder(conf=conf) as sharder:
with mock_timestamp_now() as now:
for broker in brokers:
sharder._identify_sharding_candidate(broker, node)
stats_0 = {'path': brokers[0].db_file,
'node_index': 2,
'account': 'a',
'container': 'c000',
'root': 'a/c',
'object_count': 100,
'meta_timestamp': now.internal,
'file_size': os.stat(brokers[0].db_file).st_size}
self.assertEqual([stats_0], sharder.sharding_candidates)
expected_recon = {
'found': 1,
'top': [stats_0]}
sharder._report_stats()
self._assert_recon_stats(
expected_recon, sharder, 'sharding_candidates')
def test_identify_sharding_candidate(self):
brokers = [self._make_broker(container='c%03d' % i) for i in range(6)]
for broker in brokers:
broker.set_sharding_sysmeta('Quoted-Root', 'a/c')
node = {'index': 2}
# containers are all empty
with self._mock_sharder() as sharder:
for broker in brokers:
sharder._identify_sharding_candidate(broker, node)
expected_stats = {}
self._assert_stats(expected_stats, sharder, 'sharding_candidates')
objects = [
['obj%3d' % i, next(self.ts_iter).internal, i, 'text/plain',
'etag%s' % i, 0] for i in range(160)]
# one container has 100 objects, which is below the sharding threshold
for obj in objects[:100]:
brokers[0].put_object(*obj)
conf = {'recon_cache_path': self.tempdir}
with self._mock_sharder(conf=conf) as sharder:
for broker in brokers:
sharder._identify_sharding_candidate(broker, node)
self.assertFalse(sharder.sharding_candidates)
expected_recon = {
'found': 0,
'top': []}
sharder._report_stats()
self._assert_recon_stats(
expected_recon, sharder, 'sharding_candidates')
# reduce the sharding threshold and the container is reported
conf = {'shard_container_threshold': 100,
'recon_cache_path': self.tempdir}
with self._mock_sharder(conf=conf) as sharder:
with mock_timestamp_now() as now:
for broker in brokers:
sharder._identify_sharding_candidate(broker, node)
stats_0 = {'path': brokers[0].db_file,
'node_index': 2,
'account': 'a',
'container': 'c000',
'root': 'a/c',
'object_count': 100,
'meta_timestamp': now.internal,
'file_size': os.stat(brokers[0].db_file).st_size}
self.assertEqual([stats_0], sharder.sharding_candidates)
expected_recon = {
'found': 1,
'top': [stats_0]}
sharder._report_stats()
self._assert_recon_stats(
expected_recon, sharder, 'sharding_candidates')
# repeat with handoff node and db_file error
with self._mock_sharder(conf=conf) as sharder:
with mock.patch('os.stat', side_effect=OSError('test error')):
with mock_timestamp_now(now):
for broker in brokers:
sharder._identify_sharding_candidate(broker, {})
stats_0_b = {'path': brokers[0].db_file,
'node_index': None,
'account': 'a',
'container': 'c000',
'root': 'a/c',
'object_count': 100,
'meta_timestamp': now.internal,
'file_size': None}
self.assertEqual([stats_0_b], sharder.sharding_candidates)
self._assert_stats(expected_stats, sharder, 'sharding_candidates')
expected_recon = {
'found': 1,
'top': [stats_0_b]}
sharder._report_stats()
self._assert_recon_stats(
expected_recon, sharder, 'sharding_candidates')
# load up another container, but not to threshold for sharding, and
# verify it is never a candidate for sharding
for obj in objects[:50]:
brokers[2].put_object(*obj)
own_sr = brokers[2].get_own_shard_range()
for state in ShardRange.STATES:
own_sr.update_state(state, state_timestamp=Timestamp.now())
brokers[2].merge_shard_ranges([own_sr])
with self._mock_sharder(conf=conf) as sharder:
with mock_timestamp_now(now):
for broker in brokers:
sharder._identify_sharding_candidate(broker, node)
with annotate_failure(state):
self.assertEqual([stats_0], sharder.sharding_candidates)
# reduce the threshold and the second container is included
conf = {'shard_container_threshold': 50,
'recon_cache_path': self.tempdir}
own_sr.update_state(ShardRange.ACTIVE, state_timestamp=Timestamp.now())
brokers[2].merge_shard_ranges([own_sr])
with self._mock_sharder(conf=conf) as sharder:
with mock_timestamp_now(now):
for broker in brokers:
sharder._identify_sharding_candidate(broker, node)
stats_2 = {'path': brokers[2].db_file,
'node_index': 2,
'account': 'a',
'container': 'c002',
'root': 'a/c',
'object_count': 50,
'meta_timestamp': now.internal,
'file_size': os.stat(brokers[2].db_file).st_size}
self.assertEqual([stats_0, stats_2], sharder.sharding_candidates)
expected_recon = {
'found': 2,
'top': [stats_0, stats_2]}
sharder._report_stats()
self._assert_recon_stats(
expected_recon, sharder, 'sharding_candidates')
# a broker not in active state is not included
own_sr = brokers[0].get_own_shard_range()
for state in ShardRange.STATES:
if state == ShardRange.ACTIVE:
continue
own_sr.update_state(state, state_timestamp=Timestamp.now())
brokers[0].merge_shard_ranges([own_sr])
with self._mock_sharder(conf=conf) as sharder:
with mock_timestamp_now(now):
for broker in brokers:
sharder._identify_sharding_candidate(broker, node)
with annotate_failure(state):
self.assertEqual([stats_2], sharder.sharding_candidates)
own_sr.update_state(ShardRange.ACTIVE, state_timestamp=Timestamp.now())
brokers[0].merge_shard_ranges([own_sr])
# load up a third container with 150 objects
for obj in objects[:150]:
brokers[5].put_object(*obj)
with self._mock_sharder(conf=conf) as sharder:
with mock_timestamp_now(now):
for broker in brokers:
sharder._identify_sharding_candidate(broker, node)
stats_5 = {'path': brokers[5].db_file,
'node_index': 2,
'account': 'a',
'container': 'c005',
'root': 'a/c',
'object_count': 150,
'meta_timestamp': now.internal,
'file_size': os.stat(brokers[5].db_file).st_size}
self.assertEqual([stats_0, stats_2, stats_5],
sharder.sharding_candidates)
# note recon top list is sorted by size
expected_recon = {
'found': 3,
'top': [stats_5, stats_0, stats_2]}
sharder._report_stats()
self._assert_recon_stats(
expected_recon, sharder, 'sharding_candidates')
# restrict the number of reported candidates
conf = {'shard_container_threshold': 50,
'recon_cache_path': self.tempdir,
'recon_candidates_limit': 2}
with self._mock_sharder(conf=conf) as sharder:
with mock_timestamp_now(now):
for broker in brokers:
sharder._identify_sharding_candidate(broker, node)
self.assertEqual([stats_0, stats_2, stats_5],
sharder.sharding_candidates)
expected_recon = {
'found': 3,
'top': [stats_5, stats_0]}
sharder._report_stats()
self._assert_recon_stats(
expected_recon, sharder, 'sharding_candidates')
# unrestrict the number of reported candidates
conf = {'shard_container_threshold': 50,
'recon_cache_path': self.tempdir,
'recon_candidates_limit': -1}
for i, broker in enumerate([brokers[1]] + brokers[3:5]):
for obj in objects[:(151 + i)]:
broker.put_object(*obj)
with self._mock_sharder(conf=conf) as sharder:
with mock_timestamp_now(now):
for broker in brokers:
sharder._identify_sharding_candidate(broker, node)
stats_4 = {'path': brokers[4].db_file,
'node_index': 2,
'account': 'a',
'container': 'c004',
'root': 'a/c',
'object_count': 153,
'meta_timestamp': now.internal,
'file_size': os.stat(brokers[4].db_file).st_size}
stats_3 = {'path': brokers[3].db_file,
'node_index': 2,
'account': 'a',
'container': 'c003',
'root': 'a/c',
'object_count': 152,
'meta_timestamp': now.internal,
'file_size': os.stat(brokers[3].db_file).st_size}
stats_1 = {'path': brokers[1].db_file,
'node_index': 2,
'account': 'a',
'container': 'c001',
'root': 'a/c',
'object_count': 151,
'meta_timestamp': now.internal,
'file_size': os.stat(brokers[1].db_file).st_size}
self.assertEqual(
[stats_0, stats_1, stats_2, stats_3, stats_4, stats_5],
sharder.sharding_candidates)
self._assert_stats(expected_stats, sharder, 'sharding_candidates')
expected_recon = {
'found': 6,
'top': [stats_4, stats_3, stats_1, stats_5, stats_0, stats_2]}
sharder._report_stats()
self._assert_recon_stats(
expected_recon, sharder, 'sharding_candidates')
def test_misplaced_objects_root_container(self):
broker = self._make_broker()
broker.enable_sharding(next(self.ts_iter))
objects = [
# misplaced objects in second and third shard ranges
['n', self.ts_encoded(), 2, 'text/plain', 'etag_n', 0, 0],
['there', self.ts_encoded(), 3, 'text/plain', 'etag_there', 0, 1],
['where', self.ts_encoded(), 100, 'text/plain', 'etag_where', 0,
0],
# deleted
['x', self.ts_encoded(), 0, '', '', 1, 1],
]
shard_bounds = (('', 'here'), ('here', 'there'),
('there', 'where'), ('where', 'yonder'),
('yonder', ''))
initial_shard_ranges = self._make_shard_ranges(
shard_bounds, state=ShardRange.ACTIVE)
expected_shard_dbs = []
for shard_range in initial_shard_ranges:
db_hash = hash_path(shard_range.account, shard_range.container)
expected_shard_dbs.append(
os.path.join(self.tempdir, 'sda', 'containers', '0',
db_hash[-3:], db_hash, db_hash + '.db'))
broker.merge_shard_ranges(initial_shard_ranges)
# unsharded
with self._mock_sharder() as sharder:
sharder._move_misplaced_objects(broker)
sharder._replicate_object.assert_not_called()
expected_stats = {'attempted': 1, 'success': 1, 'failure': 0,
'found': 0, 'placed': 0, 'unplaced': 0}
self._assert_stats(expected_stats, sharder, 'misplaced')
self.assertFalse(
sharder.logger.get_increment_counts().get('misplaced_found'))
# sharding - no misplaced objects
self.assertTrue(broker.set_sharding_state())
with self._mock_sharder() as sharder:
sharder._move_misplaced_objects(broker)
sharder._replicate_object.assert_not_called()
self._assert_stats(expected_stats, sharder, 'misplaced')
self.assertFalse(
sharder.logger.get_increment_counts().get('misplaced_found'))
# pretend we cleaved up to end of second shard range
context = CleavingContext.load(broker)
context.cursor = 'there'
context.store(broker)
with self._mock_sharder() as sharder:
sharder._move_misplaced_objects(broker)
sharder._replicate_object.assert_not_called()
self._assert_stats(expected_stats, sharder, 'misplaced')
self.assertFalse(
sharder.logger.get_increment_counts().get('misplaced_found'))
# sharding - misplaced objects
for obj in objects:
broker.put_object(*obj)
# pretend we have not cleaved any ranges
context.cursor = ''
context.store(broker)
with self._mock_sharder() as sharder:
sharder._move_misplaced_objects(broker)
sharder._replicate_object.assert_not_called()
self._assert_stats(expected_stats, sharder, 'misplaced')
self.assertFalse(
sharder.logger.get_increment_counts().get('misplaced_found'))
self.assertFalse(os.path.exists(expected_shard_dbs[0]))
self.assertFalse(os.path.exists(expected_shard_dbs[1]))
self.assertFalse(os.path.exists(expected_shard_dbs[2]))
self.assertFalse(os.path.exists(expected_shard_dbs[3]))
self.assertFalse(os.path.exists(expected_shard_dbs[4]))
# pretend we cleaved up to end of second shard range
context.cursor = 'there'
context.store(broker)
with self._mock_sharder() as sharder:
sharder._move_misplaced_objects(broker)
sharder._replicate_object.assert_called_once_with(
0, expected_shard_dbs[1], 0)
expected_stats = {'attempted': 1, 'success': 1, 'failure': 0,
'found': 1, 'placed': 2, 'unplaced': 0}
self._assert_stats(expected_stats, sharder, 'misplaced')
self.assertEqual(
1, sharder.logger.get_increment_counts()['misplaced_found'])
# check misplaced objects were moved
self._check_objects(objects[:2], expected_shard_dbs[1])
# ... and removed from the source db
self._check_objects(objects[2:], broker.db_file)
# ... and nothing else moved
self.assertFalse(os.path.exists(expected_shard_dbs[0]))
self.assertFalse(os.path.exists(expected_shard_dbs[2]))
self.assertFalse(os.path.exists(expected_shard_dbs[3]))
self.assertFalse(os.path.exists(expected_shard_dbs[4]))
# pretend we cleaved up to end of fourth shard range
context.cursor = 'yonder'
context.store(broker)
# and some new misplaced updates arrived in the first shard range
new_objects = [
['b', self.ts_encoded(), 10, 'text/plain', 'etag_b', 0, 0],
['c', self.ts_encoded(), 20, 'text/plain', 'etag_c', 0, 0],
]
for obj in new_objects:
broker.put_object(*obj)
# check that *all* misplaced objects are moved despite exceeding
# the listing limit
with self._mock_sharder(conf={'cleave_row_batch_size': 2}) as sharder:
sharder._move_misplaced_objects(broker)
expected_stats = {'attempted': 1, 'success': 1, 'failure': 0,
'found': 1, 'placed': 4, 'unplaced': 0}
self._assert_stats(expected_stats, sharder, 'misplaced')
sharder._replicate_object.assert_has_calls(
[mock.call(0, db, 0) for db in expected_shard_dbs[2:4]],
any_order=True
)
self._assert_stats(expected_stats, sharder, 'misplaced')
self.assertEqual(
1, sharder.logger.get_increment_counts()['misplaced_found'])
# check misplaced objects were moved
self._check_objects(new_objects, expected_shard_dbs[0])
self._check_objects(objects[:2], expected_shard_dbs[1])
self._check_objects(objects[2:3], expected_shard_dbs[2])
self._check_objects(objects[3:], expected_shard_dbs[3])
# ... and removed from the source db
self._check_objects([], broker.db_file)
self.assertFalse(os.path.exists(expected_shard_dbs[4]))
# pretend we cleaved all ranges - sharded state
self.assertTrue(broker.set_sharded_state())
with self._mock_sharder() as sharder:
sharder._move_misplaced_objects(broker)
sharder._replicate_object.assert_not_called()
expected_stats = {'attempted': 1, 'success': 1, 'failure': 0,
'found': 0, 'placed': 0, 'unplaced': 0}
self._assert_stats(expected_stats, sharder, 'misplaced')
self.assertFalse(
sharder.logger.get_increment_counts().get('misplaced_found'))
# and then more misplaced updates arrive
newer_objects = [
['a', self.ts_encoded(), 51, 'text/plain', 'etag_a', 0, 0],
['z', self.ts_encoded(), 52, 'text/plain', 'etag_z', 0, 0],
]
for obj in newer_objects:
broker.put_object(*obj)
broker.get_info() # force updates to be committed
# sanity check the puts landed in sharded broker
self._check_objects(newer_objects, broker.db_file)
with self._mock_sharder() as sharder:
sharder._move_misplaced_objects(broker)
sharder._replicate_object.assert_has_calls(
[mock.call(0, db, 0)
for db in (expected_shard_dbs[0], expected_shard_dbs[-1])],
any_order=True
)
expected_stats = {'attempted': 1, 'success': 1, 'failure': 0,
'found': 1, 'placed': 2, 'unplaced': 0}
self._assert_stats(expected_stats, sharder, 'misplaced')
self.assertEqual(
1, sharder.logger.get_increment_counts()['misplaced_found'])
# check new misplaced objects were moved
self._check_objects(newer_objects[:1] + new_objects,
expected_shard_dbs[0])
self._check_objects(newer_objects[1:], expected_shard_dbs[4])
# ... and removed from the source db
self._check_objects([], broker.db_file)
# ... and other shard dbs were unchanged
self._check_objects(objects[:2], expected_shard_dbs[1])
self._check_objects(objects[2:3], expected_shard_dbs[2])
self._check_objects(objects[3:], expected_shard_dbs[3])
def _setup_misplaced_objects(self):
# make a broker with shard ranges, move it to sharded state and then
# put some misplaced objects in it
broker = self._make_broker()
shard_bounds = (('', 'here'), ('here', 'there'),
('there', 'where'), ('where', 'yonder'),
('yonder', ''))
initial_shard_ranges = [
ShardRange('.shards_a/%s-%s' % (lower, upper),
Timestamp.now(), lower, upper, state=ShardRange.ACTIVE)
for lower, upper in shard_bounds
]
expected_dbs = []
for shard_range in initial_shard_ranges:
db_hash = hash_path(shard_range.account, shard_range.container)
expected_dbs.append(
os.path.join(self.tempdir, 'sda', 'containers', '0',
db_hash[-3:], db_hash, db_hash + '.db'))
broker.merge_shard_ranges(initial_shard_ranges)
objects = [
# misplaced objects in second, third and fourth shard ranges
['n', self.ts_encoded(), 2, 'text/plain', 'etag_n', 0, 0],
['there', self.ts_encoded(), 3, 'text/plain', 'etag_there', 0, 0],
['where', self.ts_encoded(), 100, 'text/plain', 'etag_where', 0,
0],
# deleted
['x', self.ts_encoded(), 0, '', '', 1, 0],
]
broker.enable_sharding(Timestamp.now())
self.assertTrue(broker.set_sharding_state())
self.assertTrue(broker.set_sharded_state())
for obj in objects:
broker.put_object(*obj)
self.assertEqual(SHARDED, broker.get_db_state())
return broker, objects, expected_dbs
def test_misplaced_objects_newer_objects(self):
# verify that objects merged to the db after misplaced objects have
# been identified are not removed from the db
broker, objects, expected_dbs = self._setup_misplaced_objects()
newer_objects = [
['j', self.ts_encoded(), 51, 'text/plain', 'etag_j', 0, 0],
['k', self.ts_encoded(), 52, 'text/plain', 'etag_k', 1, 0],
]
calls = []
pre_removal_objects = []
def mock_replicate_object(part, db, node_id):
calls.append((part, db, node_id))
if db == expected_dbs[1]:
# put some new objects in the shard range that is being
# replicated before misplaced objects are removed from that
# range in the source db
for obj in newer_objects:
broker.put_object(*obj)
# grab a snapshot of the db contents - a side effect is
# that the newer objects are now committed to the db
pre_removal_objects.extend(
broker.get_objects())
return True, [True, True, True]
with self._mock_sharder(replicas=3) as sharder:
sharder._replicate_object = mock_replicate_object
sharder._move_misplaced_objects(broker)
# sanity check - the newer objects were in the db before the misplaced
# object were removed
for obj in newer_objects:
self.assertIn(obj[0], [o['name'] for o in pre_removal_objects])
for obj in objects[:2]:
self.assertIn(obj[0], [o['name'] for o in pre_removal_objects])
self.assertEqual(
set([(0, db, 0) for db in (expected_dbs[1:4])]), set(calls))
# check misplaced objects were moved
self._check_objects(objects[:2], expected_dbs[1])
self._check_objects(objects[2:3], expected_dbs[2])
self._check_objects(objects[3:], expected_dbs[3])
# ... but newer objects were not removed from the source db
self._check_objects(newer_objects, broker.db_file)
self.assertFalse(sharder.logger.get_lines_for_level('warning'))
expected_stats = {'attempted': 1, 'success': 1, 'failure': 0,
'found': 1, 'placed': 4, 'unplaced': 0}
self._assert_stats(expected_stats, sharder, 'misplaced')
# they will be moved on next cycle
unlink_files(expected_dbs)
with self._mock_sharder(replicas=3) as sharder:
sharder._move_misplaced_objects(broker)
self._check_objects(newer_objects, expected_dbs[1])
self._check_objects([], broker.db_file)
expected_stats = {'attempted': 1, 'success': 1, 'failure': 0,
'found': 1, 'placed': 2, 'unplaced': 0}
self._assert_stats(expected_stats, sharder, 'misplaced')
def test_misplaced_objects_db_id_changed(self):
broker, objects, expected_dbs = self._setup_misplaced_objects()
pre_info = broker.get_info()
calls = []
expected_retained_objects = []
expected_retained_objects_dbs = []
def mock_replicate_object(part, db, node_id):
calls.append((part, db, node_id))
if len(calls) == 2:
broker.newid('fake_remote_id')
# grab snapshot of the objects in the broker when it changed id
expected_retained_objects.extend(
self._get_raw_object_records(broker))
if len(calls) >= 2:
expected_retained_objects_dbs.append(db)
return True, [True, True, True]
with self._mock_sharder(replicas=3) as sharder:
sharder._replicate_object = mock_replicate_object
sharder._move_misplaced_objects(broker)
# sanity checks
self.assertNotEqual(pre_info['id'], broker.get_info()['id'])
self.assertTrue(expected_retained_objects)
self.assertEqual(
set([(0, db, 0) for db in (expected_dbs[1:4])]), set(calls))
# check misplaced objects were moved
self._check_objects(objects[:2], expected_dbs[1])
self._check_objects(objects[2:3], expected_dbs[2])
self._check_objects(objects[3:], expected_dbs[3])
# ... but objects were not removed after the source db id changed
self._check_objects(expected_retained_objects, broker.db_file)
expected_stats = {'attempted': 1, 'success': 0, 'failure': 1,
'found': 1, 'placed': 4, 'unplaced': 0}
self._assert_stats(expected_stats, sharder, 'misplaced')
lines = sharder.logger.get_lines_for_level('warning')
self.assertIn('Refused to remove misplaced objects', lines[0])
self.assertIn('Refused to remove misplaced objects', lines[1])
self.assertFalse(lines[2:])
# they will be moved again on next cycle
unlink_files(expected_dbs)
sharder.logger.clear()
with self._mock_sharder(replicas=3) as sharder:
sharder._move_misplaced_objects(broker)
self.assertEqual(2, len(set(expected_retained_objects_dbs)))
for db in expected_retained_objects_dbs:
if db == expected_dbs[1]:
self._check_objects(objects[:2], expected_dbs[1])
if db == expected_dbs[2]:
self._check_objects(objects[2:3], expected_dbs[2])
if db == expected_dbs[3]:
self._check_objects(objects[3:], expected_dbs[3])
self._check_objects([], broker.db_file)
self.assertFalse(sharder.logger.get_lines_for_level('warning'))
expected_stats = {'attempted': 1, 'success': 1, 'failure': 0,
'found': 1, 'placed': len(expected_retained_objects),
'unplaced': 0}
self._assert_stats(expected_stats, sharder, 'misplaced')
def test_misplaced_objects_sufficient_replication(self):
broker, objects, expected_dbs = self._setup_misplaced_objects()
with self._mock_sharder(replicas=3) as sharder:
sharder._replicate_object.return_value = (True, [True, True, True])
sharder._move_misplaced_objects(broker)
sharder._replicate_object.assert_has_calls(
[mock.call(0, db, 0) for db in (expected_dbs[2:4])],
any_order=True)
expected_stats = {'attempted': 1, 'success': 1, 'failure': 0,
'found': 1, 'placed': 4, 'unplaced': 0}
self._assert_stats(expected_stats, sharder, 'misplaced')
self.assertEqual(
1, sharder.logger.get_increment_counts()['misplaced_found'])
# check misplaced objects were moved
self._check_objects(objects[:2], expected_dbs[1])
self._check_objects(objects[2:3], expected_dbs[2])
self._check_objects(objects[3:], expected_dbs[3])
# ... and removed from the source db
self._check_objects([], broker.db_file)
# ... and nothing else moved
self.assertFalse(os.path.exists(expected_dbs[0]))
self.assertFalse(os.path.exists(expected_dbs[4]))
def test_misplaced_objects_insufficient_replication_3_replicas(self):
broker, objects, expected_dbs = self._setup_misplaced_objects()
returns = {expected_dbs[1]: (True, [True, True, True]), # ok
expected_dbs[2]: (False, [True, False, False]), # < quorum
expected_dbs[3]: (False, [False, True, True])} # ok
calls = []
def mock_replicate_object(part, db, node_id):
calls.append((part, db, node_id))
return returns[db]
with self._mock_sharder(replicas=3) as sharder:
sharder._replicate_object = mock_replicate_object
sharder._move_misplaced_objects(broker)
self.assertEqual(
set([(0, db, 0) for db in (expected_dbs[1:4])]), set(calls))
expected_stats = {'attempted': 1, 'success': 0, 'failure': 1,
'placed': 4, 'unplaced': 0}
self._assert_stats(expected_stats, sharder, 'misplaced')
self.assertEqual(
1, sharder.logger.get_increment_counts()['misplaced_found'])
# check misplaced objects were moved to shard dbs
self._check_objects(objects[:2], expected_dbs[1])
self._check_objects(objects[2:3], expected_dbs[2])
self._check_objects(objects[3:], expected_dbs[3])
# ... but only removed from the source db if sufficiently replicated
self._check_objects(objects[2:3], broker.db_file)
# ... and nothing else moved
self.assertFalse(os.path.exists(expected_dbs[0]))
self.assertFalse(os.path.exists(expected_dbs[4]))
def test_misplaced_objects_insufficient_replication_2_replicas(self):
broker, objects, expected_dbs = self._setup_misplaced_objects()
returns = {expected_dbs[1]: (True, [True, True]), # ok
expected_dbs[2]: (False, [True, False]), # ok
expected_dbs[3]: (False, [False, False])} # < quorum>
calls = []
def mock_replicate_object(part, db, node_id):
calls.append((part, db, node_id))
return returns[db]
with self._mock_sharder(replicas=2) as sharder:
sharder._replicate_object = mock_replicate_object
sharder._move_misplaced_objects(broker)
self.assertEqual(
set([(0, db, 0) for db in (expected_dbs[1:4])]), set(calls))
expected_stats = {'attempted': 1, 'success': 0, 'failure': 1,
'placed': 4, 'unplaced': 0}
self._assert_stats(expected_stats, sharder, 'misplaced')
self.assertEqual(
1, sharder.logger.get_increment_counts()['misplaced_found'])
# check misplaced objects were moved to shard dbs
self._check_objects(objects[:2], expected_dbs[1])
self._check_objects(objects[2:3], expected_dbs[2])
self._check_objects(objects[3:], expected_dbs[3])
# ... but only removed from the source db if sufficiently replicated
self._check_objects(objects[3:], broker.db_file)
# ... and nothing else moved
self.assertFalse(os.path.exists(expected_dbs[0]))
self.assertFalse(os.path.exists(expected_dbs[4]))
def test_misplaced_objects_insufficient_replication_4_replicas(self):
broker, objects, expected_dbs = self._setup_misplaced_objects()
returns = {expected_dbs[1]: (False, [True, False, False, False]),
expected_dbs[2]: (True, [True, False, False, True]),
expected_dbs[3]: (False, [False, False, False, False])}
calls = []
def mock_replicate_object(part, db, node_id):
calls.append((part, db, node_id))
return returns[db]
with self._mock_sharder(replicas=4) as sharder:
sharder._replicate_object = mock_replicate_object
sharder._move_misplaced_objects(broker)
self.assertEqual(
set([(0, db, 0) for db in (expected_dbs[1:4])]), set(calls))
expected_stats = {'attempted': 1, 'success': 0, 'failure': 1,
'placed': 4, 'unplaced': 0}
self._assert_stats(expected_stats, sharder, 'misplaced')
self.assertEqual(
1, sharder.logger.get_increment_counts()['misplaced_found'])
# check misplaced objects were moved to shard dbs
self._check_objects(objects[:2], expected_dbs[1])
self._check_objects(objects[2:3], expected_dbs[2])
self._check_objects(objects[3:], expected_dbs[3])
# ... but only removed from the source db if sufficiently replicated
self._check_objects(objects[:2] + objects[3:], broker.db_file)
# ... and nothing else moved
self.assertFalse(os.path.exists(expected_dbs[0]))
self.assertFalse(os.path.exists(expected_dbs[4]))
def _check_misplaced_objects_shard_container_unsharded(self, conf=None):
broker = self._make_broker(account='.shards_a', container='.shard_c')
ts_shard = next(self.ts_iter)
own_sr = ShardRange(broker.path, ts_shard, 'here', 'where')
broker.merge_shard_ranges([own_sr])
broker.set_sharding_sysmeta('Root', 'a/c')
self.assertEqual(own_sr, broker.get_own_shard_range()) # sanity check
self.assertEqual(UNSHARDED, broker.get_db_state())
objects = [
# some of these are misplaced objects
['b', self.ts_encoded(), 2, 'text/plain', 'etag_b', 0, 0],
['here', self.ts_encoded(), 2, 'text/plain', 'etag_here', 0, 0],
['n', self.ts_encoded(), 2, 'text/plain', 'etag_n', 0, 0],
['there', self.ts_encoded(), 3, 'text/plain', 'etag_there', 0, 0],
['x', self.ts_encoded(), 0, '', '', 1, 0], # deleted
['y', self.ts_encoded(), 10, 'text/plain', 'etag_y', 0, 0],
]
shard_bounds = (('', 'here'), ('here', 'there'),
('there', 'where'), ('where', ''))
root_shard_ranges = self._make_shard_ranges(
shard_bounds, state=ShardRange.ACTIVE)
expected_shard_dbs = []
for sr in root_shard_ranges:
db_hash = hash_path(sr.account, sr.container)
expected_shard_dbs.append(
os.path.join(self.tempdir, 'sda', 'containers', '0',
db_hash[-3:], db_hash, db_hash + '.db'))
# no objects
with self._mock_sharder(conf=conf) as sharder:
sharder._fetch_shard_ranges = mock.MagicMock(
return_value=root_shard_ranges)
sharder._move_misplaced_objects(broker)
sharder._fetch_shard_ranges.assert_not_called()
sharder._replicate_object.assert_not_called()
expected_stats = {'attempted': 1, 'success': 1, 'failure': 0,
'found': 0, 'placed': 0, 'unplaced': 0}
self._assert_stats(expected_stats, sharder, 'misplaced')
self.assertFalse(
sharder.logger.get_increment_counts().get('misplaced_found'))
self.assertFalse(sharder.logger.get_lines_for_level('warning'))
# now put objects
for obj in objects:
broker.put_object(*obj)
self._check_objects(objects, broker.db_file) # sanity check
# NB final shard range not available
with self._mock_sharder(conf=conf) as sharder:
sharder._fetch_shard_ranges = mock.MagicMock(
return_value=root_shard_ranges[:-1])
sharder._move_misplaced_objects(broker)
sharder._fetch_shard_ranges.assert_has_calls(
[mock.call(broker, newest=True, params={'states': 'updating',
'marker': '',
'end_marker': 'here\x00'}),
mock.call(broker, newest=True, params={'states': 'updating',
'marker': 'where',
'end_marker': ''})])
sharder._replicate_object.assert_called_with(
0, expected_shard_dbs[0], 0),
expected_stats = {'attempted': 1, 'success': 0, 'failure': 1,
'found': 1, 'placed': 2, 'unplaced': 2}
self._assert_stats(expected_stats, sharder, 'misplaced')
self.assertEqual(
1, sharder.logger.get_increment_counts()['misplaced_found'])
# some misplaced objects could not be moved...
warning_lines = sharder.logger.get_lines_for_level('warning')
self.assertIn(
'Failed to find destination for at least 2 misplaced objects',
warning_lines[0])
self.assertFalse(warning_lines[1:])
sharder.logger.clear()
# check misplaced objects were moved
self._check_objects(objects[:2], expected_shard_dbs[0])
# ... and removed from the source db
self._check_objects(objects[2:], broker.db_file)
# ... and nothing else moved
self.assertFalse(os.path.exists(expected_shard_dbs[1]))
self.assertFalse(os.path.exists(expected_shard_dbs[2]))
self.assertFalse(os.path.exists(expected_shard_dbs[3]))
# repeat with final shard range available
with self._mock_sharder(conf=conf) as sharder:
sharder._fetch_shard_ranges = mock.MagicMock(
return_value=root_shard_ranges)
sharder._move_misplaced_objects(broker)
sharder._fetch_shard_ranges.assert_has_calls(
[mock.call(broker, newest=True, params={'states': 'updating',
'marker': 'where',
'end_marker': ''})])
sharder._replicate_object.assert_called_with(
0, expected_shard_dbs[-1], 0),
expected_stats = {'attempted': 1, 'success': 1, 'failure': 0,
'found': 1, 'placed': 2, 'unplaced': 0}
self._assert_stats(expected_stats, sharder, 'misplaced')
self.assertEqual(
1, sharder.logger.get_increment_counts()['misplaced_found'])
self.assertFalse(sharder.logger.get_lines_for_level('warning'))
# check misplaced objects were moved
self._check_objects(objects[:2], expected_shard_dbs[0])
self._check_objects(objects[4:], expected_shard_dbs[3])
# ... and removed from the source db
self._check_objects(objects[2:4], broker.db_file)
# ... and nothing else moved
self.assertFalse(os.path.exists(expected_shard_dbs[1]))
self.assertFalse(os.path.exists(expected_shard_dbs[2]))
# repeat - no work remaining
with self._mock_sharder(conf=conf) as sharder:
sharder._fetch_shard_ranges = mock.MagicMock(
return_value=root_shard_ranges)
sharder._move_misplaced_objects(broker)
sharder._fetch_shard_ranges.assert_not_called()
sharder._replicate_object.assert_not_called()
expected_stats = {'attempted': 1, 'success': 1, 'failure': 0,
'found': 0, 'placed': 0, 'unplaced': 0}
self._assert_stats(expected_stats, sharder, 'misplaced')
self.assertFalse(
sharder.logger.get_increment_counts().get('misplaced_found'))
self.assertFalse(sharder.logger.get_lines_for_level('warning'))
# and then more misplaced updates arrive
new_objects = [
['a', self.ts_encoded(), 51, 'text/plain', 'etag_a', 0, 0],
['z', self.ts_encoded(), 52, 'text/plain', 'etag_z', 0, 0],
]
for obj in new_objects:
broker.put_object(*obj)
# sanity check the puts landed in sharded broker
self._check_objects(new_objects[:1] + objects[2:4] + new_objects[1:],
broker.db_file)
with self._mock_sharder(conf=conf) as sharder:
sharder._fetch_shard_ranges = mock.MagicMock(
return_value=root_shard_ranges)
sharder._move_misplaced_objects(broker)
sharder._fetch_shard_ranges.assert_has_calls(
[mock.call(broker, newest=True,
params={'states': 'updating',
'marker': '', 'end_marker': 'here\x00'}),
mock.call(broker, newest=True, params={'states': 'updating',
'marker': 'where',
'end_marker': ''})])
sharder._replicate_object.assert_has_calls(
[mock.call(0, db, 0)
for db in (expected_shard_dbs[0], expected_shard_dbs[3])],
any_order=True
)
expected_stats = {'attempted': 1, 'success': 1, 'failure': 0,
'found': 1, 'placed': 2, 'unplaced': 0}
self._assert_stats(expected_stats, sharder, 'misplaced')
self.assertEqual(
1, sharder.logger.get_increment_counts()['misplaced_found'])
self.assertFalse(sharder.logger.get_lines_for_level('warning'))
# check new misplaced objects were moved
self._check_objects(new_objects[:1] + objects[:2],
expected_shard_dbs[0])
self._check_objects(objects[4:] + new_objects[1:],
expected_shard_dbs[3])
# ... and removed from the source db
self._check_objects(objects[2:4], broker.db_file)
# ... and nothing else moved
self.assertFalse(os.path.exists(expected_shard_dbs[1]))
self.assertFalse(os.path.exists(expected_shard_dbs[2]))
def test_misplaced_objects_shard_container_unsharded(self):
self._check_misplaced_objects_shard_container_unsharded()
def test_misplaced_objects_shard_container_unsharded_limit_two(self):
self._check_misplaced_objects_shard_container_unsharded(
conf={'cleave_row_batch_size': 2})
def test_misplaced_objects_shard_container_unsharded_limit_one(self):
self._check_misplaced_objects_shard_container_unsharded(
conf={'cleave_row_batch_size': 1})
def test_misplaced_objects_shard_container_sharding(self):
broker = self._make_broker(account='.shards_a', container='shard_c')
ts_shard = next(self.ts_iter)
# note that own_sr spans two root shard ranges
own_sr = ShardRange(broker.path, ts_shard, 'here', 'where')
own_sr.update_state(ShardRange.SHARDING)
own_sr.epoch = next(self.ts_iter)
broker.merge_shard_ranges([own_sr])
broker.set_sharding_sysmeta('Root', 'a/c')
self.assertEqual(own_sr, broker.get_own_shard_range()) # sanity check
self.assertEqual(UNSHARDED, broker.get_db_state())
objects = [
# some of these are misplaced objects
['b', self.ts_encoded(), 2, 'text/plain', 'etag_b', 0, 0],
['here', self.ts_encoded(), 2, 'text/plain', 'etag_here', 0, 0],
['n', self.ts_encoded(), 2, 'text/plain', 'etag_n', 0, 0],
['there', self.ts_encoded(), 3, 'text/plain', 'etag_there', 0, 0],
['v', self.ts_encoded(), 10, 'text/plain', 'etag_v', 0, 0],
['y', self.ts_encoded(), 10, 'text/plain', 'etag_y', 0, 0],
]
shard_bounds = (('', 'here'), ('here', 'there'),
('there', 'where'), ('where', ''))
root_shard_ranges = self._make_shard_ranges(
shard_bounds, state=ShardRange.ACTIVE)
expected_shard_dbs = []
for sr in root_shard_ranges:
db_hash = hash_path(sr.account, sr.container)
expected_shard_dbs.append(
os.path.join(self.tempdir, 'sda', 'containers', '0',
db_hash[-3:], db_hash, db_hash + '.db'))
# pretend broker is sharding but not yet cleaved a shard
self.assertTrue(broker.set_sharding_state())
broker.merge_shard_ranges([dict(sr) for sr in root_shard_ranges[1:3]])
# then some updates arrive
for obj in objects:
broker.put_object(*obj)
broker.get_info()
self._check_objects(objects, broker.db_file) # sanity check
# first destination is not available
with self._mock_sharder() as sharder:
sharder._fetch_shard_ranges = mock.MagicMock(
return_value=root_shard_ranges[1:])
sharder._move_misplaced_objects(broker)
sharder._fetch_shard_ranges.assert_has_calls(
[mock.call(broker, newest=True,
params={'states': 'updating',
'marker': '', 'end_marker': 'here\x00'}),
mock.call(broker, newest=True,
params={'states': 'updating',
'marker': 'where', 'end_marker': ''})])
sharder._replicate_object.assert_has_calls(
[mock.call(0, expected_shard_dbs[-1], 0)],
)
expected_stats = {'attempted': 1, 'success': 0, 'failure': 1,
'found': 1, 'placed': 1, 'unplaced': 2}
self._assert_stats(expected_stats, sharder, 'misplaced')
self.assertEqual(
1, sharder.logger.get_increment_counts()['misplaced_found'])
warning_lines = sharder.logger.get_lines_for_level('warning')
self.assertIn(
'Failed to find destination for at least 2 misplaced objects',
warning_lines[0])
self.assertFalse(warning_lines[1:])
sharder.logger.clear()
# check some misplaced objects were moved
self._check_objects(objects[5:], expected_shard_dbs[3])
# ... and removed from the source db
self._check_objects(objects[:5], broker.db_file)
self.assertFalse(os.path.exists(expected_shard_dbs[0]))
self.assertFalse(os.path.exists(expected_shard_dbs[1]))
self.assertFalse(os.path.exists(expected_shard_dbs[2]))
# normality resumes and all destinations are available
with self._mock_sharder() as sharder:
sharder._fetch_shard_ranges = mock.MagicMock(
return_value=root_shard_ranges)
sharder._move_misplaced_objects(broker)
sharder._fetch_shard_ranges.assert_has_calls(
[mock.call(broker, newest=True, params={'states': 'updating',
'marker': '',
'end_marker': 'here\x00'})]
)
sharder._replicate_object.assert_has_calls(
[mock.call(0, expected_shard_dbs[0], 0)],
)
expected_stats = {'attempted': 1, 'success': 1, 'failure': 0,
'found': 1, 'placed': 2, 'unplaced': 0}
self._assert_stats(expected_stats, sharder, 'misplaced')
self.assertEqual(
1, sharder.logger.get_increment_counts()['misplaced_found'])
self.assertFalse(sharder.logger.get_lines_for_level('warning'))
# check misplaced objects were moved
self._check_objects(objects[:2], expected_shard_dbs[0])
self._check_objects(objects[5:], expected_shard_dbs[3])
# ... and removed from the source db
self._check_objects(objects[2:5], broker.db_file)
self.assertFalse(os.path.exists(expected_shard_dbs[1]))
self.assertFalse(os.path.exists(expected_shard_dbs[2]))
# pretend first shard has been cleaved
context = CleavingContext.load(broker)
context.cursor = 'there'
context.store(broker)
# and then more misplaced updates arrive
new_objects = [
['a', self.ts_encoded(), 51, 'text/plain', 'etag_a', 0, 0],
# this one is in the now cleaved shard range...
['k', self.ts_encoded(), 52, 'text/plain', 'etag_k', 0, 0],
['z', self.ts_encoded(), 53, 'text/plain', 'etag_z', 0, 0],
]
for obj in new_objects:
broker.put_object(*obj)
broker.get_info() # force updates to be committed
# sanity check the puts landed in sharded broker
self._check_objects(sorted(new_objects + objects[2:5]), broker.db_file)
with self._mock_sharder() as sharder:
sharder._fetch_shard_ranges = mock.MagicMock(
return_value=root_shard_ranges)
sharder._move_misplaced_objects(broker)
sharder._fetch_shard_ranges.assert_has_calls(
[mock.call(broker, newest=True,
params={'states': 'updating', 'marker': '',
'end_marker': 'there\x00'}),
mock.call(broker, newest=True,
params={'states': 'updating', 'marker': 'where',
'end_marker': ''})])
sharder._replicate_object.assert_has_calls(
[mock.call(0, db, 0) for db in (expected_shard_dbs[0],
expected_shard_dbs[1],
expected_shard_dbs[-1])],
any_order=True
)
expected_stats = {'attempted': 1, 'success': 1, 'failure': 0,
'found': 1, 'placed': 5, 'unplaced': 0}
self._assert_stats(expected_stats, sharder, 'misplaced')
self.assertEqual(
1, sharder.logger.get_increment_counts()['misplaced_found'])
self.assertFalse(sharder.logger.get_lines_for_level('warning'))
# check *all* the misplaced objects were moved
self._check_objects(new_objects[:1] + objects[:2],
expected_shard_dbs[0])
self._check_objects(new_objects[1:2] + objects[2:4],
expected_shard_dbs[1])
self._check_objects(objects[5:] + new_objects[2:],
expected_shard_dbs[3])
# ... and removed from the source db
self._check_objects(objects[4:5], broker.db_file)
self.assertFalse(os.path.exists(expected_shard_dbs[2]))
def test_misplaced_objects_deleted_and_updated(self):
# setup
broker = self._make_broker()
broker.enable_sharding(next(self.ts_iter))
shard_bounds = (('', 'here'), ('here', ''))
root_shard_ranges = self._make_shard_ranges(
shard_bounds, state=ShardRange.ACTIVE)
expected_shard_dbs = []
for sr in root_shard_ranges:
db_hash = hash_path(sr.account, sr.container)
expected_shard_dbs.append(
os.path.join(self.tempdir, 'sda', 'containers', '0',
db_hash[-3:], db_hash, db_hash + '.db'))
broker.merge_shard_ranges(root_shard_ranges)
self.assertTrue(broker.set_sharding_state())
ts_older_internal = self.ts_encoded() # used later
# put deleted objects into source
objects = [
['b', self.ts_encoded(), 0, '', '', 1, 0],
['x', self.ts_encoded(), 0, '', '', 1, 0]
]
for obj in objects:
broker.put_object(*obj)
broker.get_info()
self._check_objects(objects, broker.db_file) # sanity check
# pretend we cleaved all ranges - sharded state
self.assertTrue(broker.set_sharded_state())
with self._mock_sharder() as sharder:
sharder._move_misplaced_objects(broker)
sharder._replicate_object.assert_has_calls(
[mock.call(0, db, 0) for db in (expected_shard_dbs[0],
expected_shard_dbs[1])],
any_order=True
)
expected_stats = {'attempted': 1, 'success': 1, 'failure': 0,
'found': 1, 'placed': 2, 'unplaced': 0}
self._assert_stats(expected_stats, sharder, 'misplaced')
self.assertEqual(
1, sharder.logger.get_increment_counts()['misplaced_found'])
# check new misplaced objects were moved
self._check_objects(objects[:1], expected_shard_dbs[0])
self._check_objects(objects[1:], expected_shard_dbs[1])
# ... and removed from the source db
self._check_objects([], broker.db_file)
# update source db with older undeleted versions of same objects
old_objects = [
['b', ts_older_internal, 2, 'text/plain', 'etag_b', 0, 0],
['x', ts_older_internal, 4, 'text/plain', 'etag_x', 0, 0]
]
for obj in old_objects:
broker.put_object(*obj)
broker.get_info()
self._check_objects(old_objects, broker.db_file) # sanity check
with self._mock_sharder() as sharder:
sharder._move_misplaced_objects(broker)
sharder._replicate_object.assert_has_calls(
[mock.call(0, db, 0) for db in (expected_shard_dbs[0],
expected_shard_dbs[1])],
any_order=True
)
self._assert_stats(expected_stats, sharder, 'misplaced')
self.assertEqual(
1, sharder.logger.get_increment_counts()['misplaced_found'])
# check older misplaced objects were not merged to shard brokers
self._check_objects(objects[:1], expected_shard_dbs[0])
self._check_objects(objects[1:], expected_shard_dbs[1])
# ... and removed from the source db
self._check_objects([], broker.db_file)
# the destination shard dbs for misplaced objects may already exist so
# check they are updated correctly when overwriting objects
# update source db with newer deleted versions of same objects
new_objects = [
['b', self.ts_encoded(), 0, '', '', 1, 0],
['x', self.ts_encoded(), 0, '', '', 1, 0]
]
for obj in new_objects:
broker.put_object(*obj)
broker.get_info()
self._check_objects(new_objects, broker.db_file) # sanity check
shard_broker = ContainerBroker(
expected_shard_dbs[0], account=root_shard_ranges[0].account,
container=root_shard_ranges[0].container)
# update one shard container with even newer version of object
timestamps = [next(self.ts_iter) for i in range(7)]
ts_newer = encode_timestamps(
timestamps[1], timestamps[3], timestamps[5])
newer_object = ('b', ts_newer, 10, 'text/plain', 'etag_b', 0, 0)
shard_broker.put_object(*newer_object)
with self._mock_sharder() as sharder:
sharder._move_misplaced_objects(broker)
sharder._replicate_object.assert_has_calls(
[mock.call(0, db, 0) for db in (expected_shard_dbs[0],
expected_shard_dbs[1])],
any_order=True
)
self._assert_stats(expected_stats, sharder, 'misplaced')
self.assertEqual(
1, sharder.logger.get_increment_counts()['misplaced_found'])
# check only the newer misplaced object was moved
self._check_objects([newer_object], expected_shard_dbs[0])
self._check_objects(new_objects[1:], expected_shard_dbs[1])
# ... and removed from the source db
self._check_objects([], broker.db_file)
# update source with a version of 'b' that has newer data
# but older content-type and metadata relative to shard object
ts_update = encode_timestamps(
timestamps[2], timestamps[3], timestamps[4])
update_object = ('b', ts_update, 20, 'text/ignored', 'etag_newer', 0,
0)
broker.put_object(*update_object)
with self._mock_sharder() as sharder:
sharder._move_misplaced_objects(broker)
ts_expected = encode_timestamps(
timestamps[2], timestamps[3], timestamps[5])
expected = ('b', ts_expected, 20, 'text/plain', 'etag_newer', 0, 0)
self._check_objects([expected], expected_shard_dbs[0])
self._check_objects([], broker.db_file)
# update source with a version of 'b' that has older data
# and content-type but newer metadata relative to shard object
ts_update = encode_timestamps(
timestamps[1], timestamps[3], timestamps[6])
update_object = ('b', ts_update, 999, 'text/ignored', 'etag_b', 0, 0)
broker.put_object(*update_object)
with self._mock_sharder() as sharder:
sharder._move_misplaced_objects(broker)
ts_expected = encode_timestamps(
timestamps[2], timestamps[3], timestamps[6])
expected = ('b', ts_expected, 20, 'text/plain', 'etag_newer', 0, 0)
self._check_objects([expected], expected_shard_dbs[0])
self._check_objects([], broker.db_file)
# update source with a version of 'b' that has older data
# but newer content-type and metadata
ts_update = encode_timestamps(
timestamps[2], timestamps[6], timestamps[6])
update_object = ('b', ts_update, 999, 'text/newer', 'etag_b', 0, 0)
broker.put_object(*update_object)
with self._mock_sharder() as sharder:
sharder._move_misplaced_objects(broker)
ts_expected = encode_timestamps(
timestamps[2], timestamps[6], timestamps[6])
expected = ('b', ts_expected, 20, 'text/newer', 'etag_newer', 0, 0)
self._check_objects([expected], expected_shard_dbs[0])
self._check_objects([], broker.db_file)
def _setup_old_style_find_ranges(self, account, cont, lower, upper):
broker = self._make_broker(account=account, container=cont)
own_sr = ShardRange('%s/%s' % (account, cont), Timestamp.now(),
lower, upper)
broker.merge_shard_ranges([own_sr])
broker.set_sharding_sysmeta('Root', 'a/c')
objects = [
# some of these are misplaced objects
['obj%3d' % i, self.ts_encoded(), i, 'text/plain', 'etag%s' % i, 0]
for i in range(100)]
for obj in objects:
broker.put_object(*obj)
return broker, objects
def _check_old_style_find_shard_ranges_none_found(self, broker, objects):
with self._mock_sharder() as sharder:
num_found = sharder._find_shard_ranges(broker)
self.assertGreater(sharder.split_size, len(objects))
self.assertEqual(0, num_found)
self.assertFalse(broker.get_shard_ranges())
expected_stats = {'attempted': 1, 'success': 0, 'failure': 1,
'found': 0, 'min_time': mock.ANY,
'max_time': mock.ANY}
stats = self._assert_stats(expected_stats, sharder, 'scanned')
self.assertGreaterEqual(stats['max_time'], stats['min_time'])
with self._mock_sharder(
conf={'shard_container_threshold': 200}) as sharder:
num_found = sharder._find_shard_ranges(broker)
self.assertEqual(sharder.split_size, len(objects))
self.assertEqual(0, num_found)
self.assertFalse(broker.get_shard_ranges())
expected_stats = {'attempted': 1, 'success': 0, 'failure': 1,
'found': 0, 'min_time': mock.ANY,
'max_time': mock.ANY}
stats = self._assert_stats(expected_stats, sharder, 'scanned')
self.assertGreaterEqual(stats['max_time'], stats['min_time'])
def test_old_style_find_shard_ranges_none_found_root(self):
broker, objects = self._setup_old_style_find_ranges('a', 'c', '', '')
self._check_old_style_find_shard_ranges_none_found(broker, objects)
def test_old_style_find_shard_ranges_none_found_shard(self):
broker, objects = self._setup_old_style_find_ranges(
'.shards_a', 'c', 'lower', 'upper')
self._check_old_style_find_shard_ranges_none_found(broker, objects)
def _check_old_style_find_shard_ranges_finds_two(
self, account, cont, lower, upper):
def check_ranges():
self.assertEqual(2, len(broker.get_shard_ranges()))
expected_ranges = [
ShardRange(
ShardRange.make_path('.int_shards_a', 'c', cont, now, 0),
now, lower, objects[98][0], 99),
ShardRange(
ShardRange.make_path('.int_shards_a', 'c', cont, now, 1),
now, objects[98][0], upper, 1),
]
self._assert_shard_ranges_equal(expected_ranges,
broker.get_shard_ranges())
# first invocation finds both ranges
broker, objects = self._setup_old_style_find_ranges(
account, cont, lower, upper)
with self._mock_sharder(conf={'shard_container_threshold': 199,
'auto_create_account_prefix': '.int_'}
) as sharder:
with mock_timestamp_now() as now:
num_found = sharder._find_shard_ranges(broker)
self.assertEqual(99, sharder.split_size)
self.assertEqual(2, num_found)
check_ranges()
expected_stats = {'attempted': 1, 'success': 1, 'failure': 0,
'found': 2, 'min_time': mock.ANY,
'max_time': mock.ANY}
stats = self._assert_stats(expected_stats, sharder, 'scanned')
self.assertGreaterEqual(stats['max_time'], stats['min_time'])
# second invocation finds none
with self._mock_sharder(conf={'shard_container_threshold': 199,
'auto_create_account_prefix': '.int_'}
) as sharder:
num_found = sharder._find_shard_ranges(broker)
self.assertEqual(0, num_found)
self.assertEqual(2, len(broker.get_shard_ranges()))
check_ranges()
expected_stats = {'attempted': 0, 'success': 0, 'failure': 0,
'found': 0, 'min_time': mock.ANY,
'max_time': mock.ANY}
stats = self._assert_stats(expected_stats, sharder, 'scanned')
self.assertGreaterEqual(stats['max_time'], stats['min_time'])
def test_old_style_find_shard_ranges_finds_two_root(self):
self._check_old_style_find_shard_ranges_finds_two('a', 'c', '', '')
def test_old_style_find_shard_ranges_finds_two_shard(self):
self._check_old_style_find_shard_ranges_finds_two(
'.shards_a', 'c_', 'l', 'u')
def _setup_find_ranges(self, account, cont, lower, upper):
broker = self._make_broker(account=account, container=cont)
own_sr = ShardRange('%s/%s' % (account, cont), Timestamp.now(),
lower, upper)
broker.merge_shard_ranges([own_sr])
broker.set_sharding_sysmeta('Quoted-Root', 'a/c')
objects = [
# some of these are misplaced objects
['obj%3d' % i, self.ts_encoded(), i, 'text/plain', 'etag%s' % i, 0]
for i in range(100)]
for obj in objects:
broker.put_object(*obj)
return broker, objects
def _check_find_shard_ranges_none_found(self, broker, objects):
with self._mock_sharder() as sharder:
num_found = sharder._find_shard_ranges(broker)
self.assertGreater(sharder.split_size, len(objects))
self.assertEqual(0, num_found)
self.assertFalse(broker.get_shard_ranges())
expected_stats = {'attempted': 1, 'success': 0, 'failure': 1,
'found': 0, 'min_time': mock.ANY,
'max_time': mock.ANY}
stats = self._assert_stats(expected_stats, sharder, 'scanned')
self.assertGreaterEqual(stats['max_time'], stats['min_time'])
with self._mock_sharder(
conf={'shard_container_threshold': 200}) as sharder:
num_found = sharder._find_shard_ranges(broker)
self.assertEqual(sharder.split_size, len(objects))
self.assertEqual(0, num_found)
self.assertFalse(broker.get_shard_ranges())
expected_stats = {'attempted': 1, 'success': 0, 'failure': 1,
'found': 0, 'min_time': mock.ANY,
'max_time': mock.ANY}
stats = self._assert_stats(expected_stats, sharder, 'scanned')
self.assertGreaterEqual(stats['max_time'], stats['min_time'])
def test_find_shard_ranges_none_found_root(self):
broker, objects = self._setup_find_ranges('a', 'c', '', '')
self._check_find_shard_ranges_none_found(broker, objects)
def test_find_shard_ranges_none_found_shard(self):
broker, objects = self._setup_find_ranges(
'.shards_a', 'c', 'lower', 'upper')
self._check_find_shard_ranges_none_found(broker, objects)
def _check_find_shard_ranges_finds_two(self, account, cont, lower, upper):
def check_ranges():
self.assertEqual(2, len(broker.get_shard_ranges()))
expected_ranges = [
ShardRange(
ShardRange.make_path('.int_shards_a', 'c', cont, now, 0),
now, lower, objects[98][0], 99),
ShardRange(
ShardRange.make_path('.int_shards_a', 'c', cont, now, 1),
now, objects[98][0], upper, 1),
]
self._assert_shard_ranges_equal(expected_ranges,
broker.get_shard_ranges())
# first invocation finds both ranges
broker, objects = self._setup_find_ranges(
account, cont, lower, upper)
with self._mock_sharder(conf={'shard_container_threshold': 199,
'auto_create_account_prefix': '.int_'}
) as sharder:
with mock_timestamp_now() as now:
num_found = sharder._find_shard_ranges(broker)
self.assertEqual(99, sharder.split_size)
self.assertEqual(2, num_found)
check_ranges()
expected_stats = {'attempted': 1, 'success': 1, 'failure': 0,
'found': 2, 'min_time': mock.ANY,
'max_time': mock.ANY}
stats = self._assert_stats(expected_stats, sharder, 'scanned')
self.assertGreaterEqual(stats['max_time'], stats['min_time'])
# second invocation finds none
with self._mock_sharder(conf={'shard_container_threshold': 199,
'auto_create_account_prefix': '.int_'}
) as sharder:
num_found = sharder._find_shard_ranges(broker)
self.assertEqual(0, num_found)
self.assertEqual(2, len(broker.get_shard_ranges()))
check_ranges()
expected_stats = {'attempted': 0, 'success': 0, 'failure': 0,
'found': 0, 'min_time': mock.ANY,
'max_time': mock.ANY}
stats = self._assert_stats(expected_stats, sharder, 'scanned')
self.assertGreaterEqual(stats['max_time'], stats['min_time'])
def test_find_shard_ranges_finds_two_root(self):
self._check_find_shard_ranges_finds_two('a', 'c', '', '')
def test_find_shard_ranges_finds_two_shard(self):
self._check_find_shard_ranges_finds_two('.shards_a', 'c_', 'l', 'u')
def _check_find_shard_ranges_finds_three(self, account, cont, lower,
upper):
broker, objects = self._setup_find_ranges(
account, cont, lower, upper)
now = Timestamp.now()
expected_ranges = [
ShardRange(
ShardRange.make_path('.shards_a', 'c', cont, now, 0),
now, lower, objects[44][0], 45),
ShardRange(
ShardRange.make_path('.shards_a', 'c', cont, now, 1),
now, objects[44][0], objects[89][0], 45),
ShardRange(
ShardRange.make_path('.shards_a', 'c', cont, now, 2),
now, objects[89][0], upper, 10),
]
# first invocation finds 2 ranges
with self._mock_sharder(
conf={'shard_container_threshold': 90,
'shard_scanner_batch_size': 2}) as sharder:
with mock_timestamp_now(now):
num_found = sharder._find_shard_ranges(broker)
self.assertEqual(45, sharder.split_size)
self.assertEqual(2, num_found)
self.assertEqual(2, len(broker.get_shard_ranges()))
self._assert_shard_ranges_equal(expected_ranges[:2],
broker.get_shard_ranges())
expected_stats = {'attempted': 1, 'success': 1, 'failure': 0,
'found': 2, 'min_time': mock.ANY,
'max_time': mock.ANY}
stats = self._assert_stats(expected_stats, sharder, 'scanned')
self.assertGreaterEqual(stats['max_time'], stats['min_time'])
# second invocation finds third shard range
with self._mock_sharder(conf={'shard_container_threshold': 199,
'shard_scanner_batch_size': 2}
) as sharder:
with mock_timestamp_now(now):
num_found = sharder._find_shard_ranges(broker)
self.assertEqual(1, num_found)
self.assertEqual(3, len(broker.get_shard_ranges()))
self._assert_shard_ranges_equal(expected_ranges,
broker.get_shard_ranges())
expected_stats = {'attempted': 1, 'success': 1, 'failure': 0,
'found': 1, 'min_time': mock.ANY,
'max_time': mock.ANY}
stats = self._assert_stats(expected_stats, sharder, 'scanned')
self.assertGreaterEqual(stats['max_time'], stats['min_time'])
# third invocation finds none
with self._mock_sharder(conf={'shard_container_threshold': 199,
'shard_scanner_batch_size': 2}
) as sharder:
sharder._send_shard_ranges = mock.MagicMock(return_value=True)
num_found = sharder._find_shard_ranges(broker)
self.assertEqual(0, num_found)
self.assertEqual(3, len(broker.get_shard_ranges()))
self._assert_shard_ranges_equal(expected_ranges,
broker.get_shard_ranges())
expected_stats = {'attempted': 0, 'success': 0, 'failure': 0,
'found': 0, 'min_time': mock.ANY,
'max_time': mock.ANY}
stats = self._assert_stats(expected_stats, sharder, 'scanned')
self.assertGreaterEqual(stats['max_time'], stats['min_time'])
def test_find_shard_ranges_finds_three_root(self):
self._check_find_shard_ranges_finds_three('a', 'c', '', '')
def test_find_shard_ranges_finds_three_shard(self):
self._check_find_shard_ranges_finds_three('.shards_a', 'c_', 'l', 'u')
def test_sharding_enabled(self):
broker = self._make_broker()
self.assertFalse(sharding_enabled(broker))
broker.update_metadata(
{'X-Container-Sysmeta-Sharding':
('yes', Timestamp.now().internal)})
self.assertTrue(sharding_enabled(broker))
# deleting broker clears sharding sysmeta
broker.delete_db(Timestamp.now().internal)
self.assertFalse(sharding_enabled(broker))
# but if broker has a shard range then sharding is enabled
broker.merge_shard_ranges(
ShardRange('acc/a_shard', Timestamp.now(), 'l', 'u'))
self.assertTrue(sharding_enabled(broker))
def test_send_shard_ranges(self):
shard_ranges = self._make_shard_ranges((('', 'h'), ('h', '')))
def do_test(replicas, *resp_codes):
sent_data = defaultdict(bytes)
def on_send(fake_conn, data):
sent_data[fake_conn] += data
with self._mock_sharder(replicas=replicas) as sharder:
with mocked_http_conn(*resp_codes, give_send=on_send) as conn:
with mock_timestamp_now() as now:
res = sharder._send_shard_ranges(
'a', 'c', shard_ranges)
self.assertEqual(sharder.ring.replica_count, len(conn.requests))
expected_body = json.dumps([dict(sr) for sr in shard_ranges])
expected_body = expected_body.encode('ascii')
expected_headers = {'Content-Type': 'application/json',
'Content-Length': str(len(expected_body)),
'X-Timestamp': now.internal,
'X-Backend-Record-Type': 'shard',
'User-Agent': mock.ANY}
for data in sent_data.values():
self.assertEqual(expected_body, data)
hosts = set()
for req in conn.requests:
path_parts = req['path'].split('/')[1:]
hosts.add('%s:%s/%s' % (req['ip'], req['port'], path_parts[0]))
# FakeRing only has one partition
self.assertEqual('0', path_parts[1])
self.assertEqual('PUT', req['method'])
self.assertEqual(['a', 'c'], path_parts[-2:])
req_headers = req['headers']
for k, v in expected_headers.items():
self.assertEqual(v, req_headers[k])
self.assertTrue(
req_headers['User-Agent'].startswith('container-sharder'))
self.assertEqual(sharder.ring.replica_count, len(hosts))
return res, sharder
replicas = 3
res, sharder = do_test(replicas, 202, 202, 202)
self.assertTrue(res)
self.assertFalse(sharder.logger.get_lines_for_level('warning'))
self.assertFalse(sharder.logger.get_lines_for_level('error'))
res, sharder = do_test(replicas, 202, 202, 404)
self.assertTrue(res)
self.assertEqual([True], [
'Failed to put shard ranges' in line for line in
sharder.logger.get_lines_for_level('warning')])
self.assertFalse(sharder.logger.get_lines_for_level('error'))
res, sharder = do_test(replicas, 202, 202, Exception)
self.assertTrue(res)
self.assertFalse(sharder.logger.get_lines_for_level('warning'))
self.assertEqual([True], [
'Failed to put shard ranges' in line for line in
sharder.logger.get_lines_for_level('error')])
res, sharder = do_test(replicas, 202, 404, 404)
self.assertFalse(res)
self.assertEqual([True, True], [
'Failed to put shard ranges' in line for line in
sharder.logger.get_lines_for_level('warning')])
self.assertFalse(sharder.logger.get_lines_for_level('error'))
res, sharder = do_test(replicas, 500, 500, 500)
self.assertFalse(res)
self.assertEqual([True, True, True], [
'Failed to put shard ranges' in line for line in
sharder.logger.get_lines_for_level('warning')])
self.assertFalse(sharder.logger.get_lines_for_level('error'))
res, sharder = do_test(replicas, Exception, Exception, 202)
self.assertEqual([True, True], [
'Failed to put shard ranges' in line for line in
sharder.logger.get_lines_for_level('error')])
res, sharder = do_test(replicas, Exception, eventlet.Timeout(), 202)
self.assertFalse(sharder.logger.get_lines_for_level('warning'))
self.assertEqual([True, True], [
'Failed to put shard ranges' in line for line in
sharder.logger.get_lines_for_level('error')])
replicas = 2
res, sharder = do_test(replicas, 202, 202)
self.assertTrue(res)
self.assertFalse(sharder.logger.get_lines_for_level('warning'))
self.assertFalse(sharder.logger.get_lines_for_level('error'))
res, sharder = do_test(replicas, 202, 404)
self.assertTrue(res)
self.assertEqual([True], [
'Failed to put shard ranges' in line for line in
sharder.logger.get_lines_for_level('warning')])
self.assertFalse(sharder.logger.get_lines_for_level('error'))
res, sharder = do_test(replicas, 202, Exception)
self.assertTrue(res)
self.assertFalse(sharder.logger.get_lines_for_level('warning'))
self.assertEqual([True], [
'Failed to put shard ranges' in line for line in
sharder.logger.get_lines_for_level('error')])
res, sharder = do_test(replicas, 404, 404)
self.assertFalse(res)
self.assertEqual([True, True], [
'Failed to put shard ranges' in line for line in
sharder.logger.get_lines_for_level('warning')])
self.assertFalse(sharder.logger.get_lines_for_level('error'))
res, sharder = do_test(replicas, Exception, Exception)
self.assertFalse(res)
self.assertFalse(sharder.logger.get_lines_for_level('warning'))
self.assertEqual([True, True], [
'Failed to put shard ranges' in line for line in
sharder.logger.get_lines_for_level('error')])
res, sharder = do_test(replicas, eventlet.Timeout(), Exception)
self.assertFalse(res)
self.assertFalse(sharder.logger.get_lines_for_level('warning'))
self.assertEqual([True, True], [
'Failed to put shard ranges' in line for line in
sharder.logger.get_lines_for_level('error')])
replicas = 4
res, sharder = do_test(replicas, 202, 202, 202, 202)
self.assertFalse(sharder.logger.get_lines_for_level('warning'))
self.assertFalse(sharder.logger.get_lines_for_level('error'))
self.assertTrue(res)
res, sharder = do_test(replicas, 202, 202, 404, 404)
self.assertTrue(res)
self.assertEqual([True, True], [
'Failed to put shard ranges' in line for line in
sharder.logger.get_lines_for_level('warning')])
self.assertFalse(sharder.logger.get_lines_for_level('error'))
res, sharder = do_test(replicas, 202, 202, Exception, Exception)
self.assertTrue(res)
self.assertFalse(sharder.logger.get_lines_for_level('warning'))
self.assertEqual([True, True], [
'Failed to put shard ranges' in line for line in
sharder.logger.get_lines_for_level('error')])
res, sharder = do_test(replicas, 202, 404, 404, 404)
self.assertFalse(res)
self.assertEqual([True, True, True], [
'Failed to put shard ranges' in line for line in
sharder.logger.get_lines_for_level('warning')])
self.assertFalse(sharder.logger.get_lines_for_level('error'))
res, sharder = do_test(replicas, 500, 500, 500, 202)
self.assertFalse(res)
self.assertEqual([True, True, True], [
'Failed to put shard ranges' in line for line in
sharder.logger.get_lines_for_level('warning')])
self.assertFalse(sharder.logger.get_lines_for_level('error'))
res, sharder = do_test(replicas, Exception, Exception, 202, 404)
self.assertFalse(res)
self.assertEqual([True], [
all(msg in line for msg in ('Failed to put shard ranges', '404'))
for line in sharder.logger.get_lines_for_level('warning')])
self.assertEqual([True, True], [
'Failed to put shard ranges' in line for line in
sharder.logger.get_lines_for_level('error')])
res, sharder = do_test(
replicas, eventlet.Timeout(), eventlet.Timeout(), 202, 404)
self.assertFalse(res)
self.assertEqual([True], [
all(msg in line for msg in ('Failed to put shard ranges', '404'))
for line in sharder.logger.get_lines_for_level('warning')])
self.assertEqual([True, True], [
'Failed to put shard ranges' in line for line in
sharder.logger.get_lines_for_level('error')])
def test_process_broker_not_sharding_no_others(self):
# verify that sharding process will not start when own shard range is
# missing or in wrong state or there are no other shard ranges
broker = self._make_broker()
node = {'ip': '1.2.3.4', 'port': 6040, 'device': 'sda5', 'id': '2',
'index': 0}
# sanity check
self.assertIsNone(broker.get_own_shard_range(no_default=True))
self.assertEqual(UNSHARDED, broker.get_db_state())
# no own shard range
with self._mock_sharder() as sharder:
sharder._process_broker(broker, node, 99)
self.assertIsNone(broker.get_own_shard_range(no_default=True))
self.assertEqual(UNSHARDED, broker.get_db_state())
self.assertFalse(broker.logger.get_lines_for_level('warning'))
self.assertFalse(broker.logger.get_lines_for_level('error'))
broker.logger.clear()
# now add own shard range
for state in sorted(ShardRange.STATES):
own_sr = broker.get_own_shard_range() # returns the default
own_sr.update_state(state)
broker.merge_shard_ranges([own_sr])
with mock.patch.object(
broker, 'set_sharding_state') as mock_set_sharding_state:
with self._mock_sharder() as sharder:
with mock_timestamp_now() as now:
with mock.patch.object(sharder, '_audit_container'):
sharder._process_broker(broker, node, 99)
own_shard_range = broker.get_own_shard_range(
no_default=True)
mock_set_sharding_state.assert_not_called()
self.assertEqual(dict(own_sr, meta_timestamp=now),
dict(own_shard_range))
self.assertEqual(UNSHARDED, broker.get_db_state())
self.assertFalse(broker.logger.get_lines_for_level('warning'))
self.assertFalse(broker.logger.get_lines_for_level('error'))
broker.logger.clear()
def _check_process_broker_sharding_no_others(self, state):
# verify that when existing own_shard_range has given state and there
# are other shard ranges then the sharding process will begin
broker = self._make_broker(hash_='hash%s' % state)
node = {'ip': '1.2.3.4', 'port': 6040, 'device': 'sda5', 'id': '2',
'index': 0}
own_sr = broker.get_own_shard_range()
self.assertTrue(own_sr.update_state(state))
epoch = Timestamp.now()
own_sr.epoch = epoch
shard_ranges = self._make_shard_ranges((('', 'm'), ('m', '')))
broker.merge_shard_ranges([own_sr] + shard_ranges)
with self._mock_sharder() as sharder:
with mock.patch.object(
sharder, '_create_shard_containers', return_value=0):
with mock_timestamp_now() as now:
sharder._audit_container = mock.MagicMock()
sharder._process_broker(broker, node, 99)
final_own_sr = broker.get_own_shard_range(no_default=True)
self.assertEqual(dict(own_sr, meta_timestamp=now),
dict(final_own_sr))
self.assertEqual(SHARDING, broker.get_db_state())
self.assertEqual(epoch.normal, parse_db_filename(broker.db_file)[1])
self.assertFalse(broker.logger.get_lines_for_level('warning'))
self.assertFalse(broker.logger.get_lines_for_level('error'))
def test_process_broker_sharding_with_own_shard_range_no_others(self):
self._check_process_broker_sharding_no_others(ShardRange.SHARDING)
self._check_process_broker_sharding_no_others(ShardRange.SHRINKING)
def test_process_broker_not_sharding_others(self):
# verify that sharding process will not start when own shard range is
# missing or in wrong state even when other shard ranges are in the db
broker = self._make_broker()
node = {'ip': '1.2.3.4', 'port': 6040, 'device': 'sda5', 'id': '2',
'index': 0}
# sanity check
self.assertIsNone(broker.get_own_shard_range(no_default=True))
self.assertEqual(UNSHARDED, broker.get_db_state())
# add shard ranges - but not own
shard_ranges = self._make_shard_ranges((('', 'h'), ('h', '')))
broker.merge_shard_ranges(shard_ranges)
with self._mock_sharder() as sharder:
sharder._process_broker(broker, node, 99)
self.assertIsNone(broker.get_own_shard_range(no_default=True))
self.assertEqual(UNSHARDED, broker.get_db_state())
self.assertFalse(broker.logger.get_lines_for_level('warning'))
self.assertFalse(broker.logger.get_lines_for_level('error'))
broker.logger.clear()
# now add own shard range
for state in sorted(ShardRange.STATES):
if state in (ShardRange.SHARDING,
ShardRange.SHRINKING,
ShardRange.SHARDED):
epoch = None
else:
epoch = Timestamp.now()
own_sr = broker.get_own_shard_range() # returns the default
own_sr.update_state(state)
own_sr.epoch = epoch
broker.merge_shard_ranges([own_sr])
with self._mock_sharder() as sharder:
with mock_timestamp_now() as now:
sharder._process_broker(broker, node, 99)
own_shard_range = broker.get_own_shard_range(
no_default=True)
self.assertEqual(dict(own_sr, meta_timestamp=now),
dict(own_shard_range))
self.assertEqual(UNSHARDED, broker.get_db_state())
if epoch:
self.assertFalse(broker.logger.get_lines_for_level('warning'))
else:
self.assertIn('missing epoch',
broker.logger.get_lines_for_level('warning')[0])
self.assertFalse(broker.logger.get_lines_for_level('error'))
broker.logger.clear()
def _check_process_broker_sharding_others(self, state):
# verify states in which own_shard_range will cause sharding
# process to start when other shard ranges are in the db
broker = self._make_broker(hash_='hash%s' % state)
node = {'ip': '1.2.3.4', 'port': 6040, 'device': 'sda5', 'id': '2',
'index': 0}
# add shard ranges - but not own
shard_ranges = self._make_shard_ranges((('', 'h'), ('h', '')))
broker.merge_shard_ranges(shard_ranges)
# sanity check
self.assertIsNone(broker.get_own_shard_range(no_default=True))
self.assertEqual(UNSHARDED, broker.get_db_state())
# now set own shard range to given state and persist it
own_sr = broker.get_own_shard_range() # returns the default
self.assertTrue(own_sr.update_state(state))
epoch = Timestamp.now()
own_sr.epoch = epoch
broker.merge_shard_ranges([own_sr])
with self._mock_sharder() as sharder:
with mock_timestamp_now() as now:
# we're not testing rest of the process here so prevent any
# attempt to progress shard range states
sharder._create_shard_containers = lambda *args: 0
sharder._process_broker(broker, node, 99)
own_shard_range = broker.get_own_shard_range(no_default=True)
self.assertEqual(dict(own_sr, meta_timestamp=now),
dict(own_shard_range))
self.assertEqual(SHARDING, broker.get_db_state())
self.assertEqual(epoch.normal, parse_db_filename(broker.db_file)[1])
self.assertFalse(broker.logger.get_lines_for_level('warning'))
self.assertFalse(broker.logger.get_lines_for_level('error'))
def test_process_broker_sharding_with_own_shard_range_and_others(self):
self._check_process_broker_sharding_others(ShardRange.SHARDING)
self._check_process_broker_sharding_others(ShardRange.SHRINKING)
self._check_process_broker_sharding_others(ShardRange.SHARDED)
def check_shard_ranges_sent(self, broker, expected_sent):
bodies = []
def capture_send(conn, data):
bodies.append(data)
with self._mock_sharder() as sharder:
with mocked_http_conn(204, 204, 204,
give_send=capture_send) as mock_conn:
sharder._update_root_container(broker)
for req in mock_conn.requests:
self.assertEqual('PUT', req['method'])
self.assertEqual([expected_sent] * 3,
[json.loads(b) for b in bodies])
def test_update_root_container_own_range(self):
broker = self._make_broker()
# nothing to send
with self._mock_sharder() as sharder:
with mocked_http_conn() as mock_conn:
sharder._update_root_container(broker)
self.assertFalse(mock_conn.requests)
def check_only_own_shard_range_sent(state):
own_shard_range = broker.get_own_shard_range()
self.assertTrue(own_shard_range.update_state(
state, state_timestamp=next(self.ts_iter)))
broker.merge_shard_ranges([own_shard_range])
# add an object, expect to see it reflected in the own shard range
# that is sent
broker.put_object(str(own_shard_range.object_count + 1),
next(self.ts_iter).internal, 1, '', '')
with mock_timestamp_now() as now:
# force own shard range meta updates to be at fixed timestamp
expected_sent = [
dict(own_shard_range,
meta_timestamp=now.internal,
object_count=own_shard_range.object_count + 1,
bytes_used=own_shard_range.bytes_used + 1)]
self.check_shard_ranges_sent(broker, expected_sent)
for state in ShardRange.STATES:
with annotate_failure(state):
check_only_own_shard_range_sent(state)
def test_update_root_container_all_ranges(self):
broker = self._make_broker()
other_shard_ranges = self._make_shard_ranges((('', 'h'), ('h', '')))
self.assertTrue(other_shard_ranges[0].set_deleted())
broker.merge_shard_ranges(other_shard_ranges)
# own range missing - send nothing
with self._mock_sharder() as sharder:
with mocked_http_conn() as mock_conn:
sharder._update_root_container(broker)
self.assertFalse(mock_conn.requests)
def check_all_shard_ranges_sent(state):
own_shard_range = broker.get_own_shard_range()
self.assertTrue(own_shard_range.update_state(
state, state_timestamp=next(self.ts_iter)))
broker.merge_shard_ranges([own_shard_range])
# add an object, expect to see it reflected in the own shard range
# that is sent
broker.put_object(str(own_shard_range.object_count + 1),
next(self.ts_iter).internal, 1, '', '')
with mock_timestamp_now() as now:
shard_ranges = broker.get_shard_ranges(include_deleted=True)
expected_sent = sorted([
own_shard_range.copy(
meta_timestamp=now.internal,
object_count=own_shard_range.object_count + 1,
bytes_used=own_shard_range.bytes_used + 1)] +
shard_ranges,
key=lambda sr: (sr.upper, sr.state, sr.lower))
self.check_shard_ranges_sent(
broker, [dict(sr) for sr in expected_sent])
for state in ShardRange.STATES.keys():
with annotate_failure(state):
check_all_shard_ranges_sent(state)
def test_audit_root_container(self):
broker = self._make_broker()
expected_stats = {'attempted': 1, 'success': 1, 'failure': 0}
with self._mock_sharder() as sharder:
with mock.patch.object(
sharder, '_audit_shard_container') as mocked:
sharder._audit_container(broker)
self._assert_stats(expected_stats, sharder, 'audit_root')
self.assertFalse(sharder.logger.get_lines_for_level('warning'))
self.assertFalse(sharder.logger.get_lines_for_level('error'))
mocked.assert_not_called()
def assert_overlap_warning(line, state_text):
self.assertIn(
'Audit failed for root %s' % broker.db_file, line)
self.assertIn(
'overlapping ranges in state %s: k-t s-z' % state_text,
line)
expected_stats = {'attempted': 1, 'success': 0, 'failure': 1}
shard_bounds = (('a', 'j'), ('k', 't'), ('s', 'z'))
for state, state_text in ShardRange.STATES.items():
shard_ranges = self._make_shard_ranges(shard_bounds, state)
broker.merge_shard_ranges(shard_ranges)
with self._mock_sharder() as sharder:
with mock.patch.object(
sharder, '_audit_shard_container') as mocked:
sharder._audit_container(broker)
lines = sharder.logger.get_lines_for_level('warning')
assert_overlap_warning(lines[0], state_text)
self.assertFalse(lines[1:])
self.assertFalse(sharder.logger.get_lines_for_level('error'))
self._assert_stats(expected_stats, sharder, 'audit_root')
mocked.assert_not_called()
def assert_missing_warning(line):
self.assertIn(
'Audit failed for root %s' % broker.db_file, line)
self.assertIn('missing range(s): -a j-k z-', line)
own_shard_range = broker.get_own_shard_range()
states = (ShardRange.SHARDING, ShardRange.SHARDED)
for state in states:
own_shard_range.update_state(
state, state_timestamp=next(self.ts_iter))
broker.merge_shard_ranges([own_shard_range])
with self._mock_sharder() as sharder:
with mock.patch.object(
sharder, '_audit_shard_container') as mocked:
sharder._audit_container(broker)
lines = sharder.logger.get_lines_for_level('warning')
assert_missing_warning(lines[0])
assert_overlap_warning(lines[0], state_text)
self.assertFalse(lines[1:])
self.assertFalse(sharder.logger.get_lines_for_level('error'))
self._assert_stats(expected_stats, sharder, 'audit_root')
mocked.assert_not_called()
def test_audit_old_style_shard_container(self):
broker = self._make_broker(account='.shards_a', container='shard_c')
broker.set_sharding_sysmeta('Root', 'a/c')
# include overlaps to verify correct match for updating own shard range
shard_bounds = (
('a', 'j'), ('k', 't'), ('k', 's'), ('l', 's'), ('s', 'z'))
shard_ranges = self._make_shard_ranges(shard_bounds, ShardRange.ACTIVE)
shard_ranges[1].name = broker.path
expected_stats = {'attempted': 1, 'success': 0, 'failure': 1}
def call_audit_container(exc=None):
with self._mock_sharder() as sharder:
sharder.logger = debug_logger()
with mock.patch.object(sharder, '_audit_root_container') \
as mocked, mock.patch.object(
sharder, 'int_client') as mock_swift:
mock_response = mock.MagicMock()
mock_response.headers = {'x-backend-record-type':
'shard'}
mock_response.body = json.dumps(
[dict(sr) for sr in shard_ranges])
mock_swift.make_request.return_value = mock_response
mock_swift.make_request.side_effect = exc
mock_swift.make_path = (lambda a, c:
'/v1/%s/%s' % (a, c))
sharder.reclaim_age = 0
sharder._audit_container(broker)
mocked.assert_not_called()
return sharder, mock_swift
# bad account name
broker.account = 'bad_account'
sharder, mock_swift = call_audit_container()
lines = sharder.logger.get_lines_for_level('warning')
self._assert_stats(expected_stats, sharder, 'audit_shard')
self.assertIn('Audit warnings for shard %s' % broker.db_file, lines[0])
self.assertIn('account not in shards namespace', lines[0])
self.assertNotIn('root has no matching shard range', lines[0])
self.assertNotIn('unable to get shard ranges from root', lines[0])
self.assertIn('Audit failed for shard %s' % broker.db_file, lines[1])
self.assertIn('missing own shard range', lines[1])
self.assertFalse(lines[2:])
self.assertFalse(broker.is_deleted())
# missing own shard range
broker.get_info()
sharder, mock_swift = call_audit_container()
lines = sharder.logger.get_lines_for_level('warning')
self._assert_stats(expected_stats, sharder, 'audit_shard')
self.assertIn('Audit failed for shard %s' % broker.db_file, lines[0])
self.assertIn('missing own shard range', lines[0])
self.assertNotIn('unable to get shard ranges from root', lines[0])
self.assertFalse(lines[1:])
self.assertFalse(sharder.logger.get_lines_for_level('error'))
self.assertFalse(broker.is_deleted())
# create own shard range, no match in root
expected_stats = {'attempted': 1, 'success': 1, 'failure': 0}
own_shard_range = broker.get_own_shard_range() # get the default
own_shard_range.lower = 'j'
own_shard_range.upper = 'k'
broker.merge_shard_ranges([own_shard_range])
sharder, mock_swift = call_audit_container()
lines = sharder.logger.get_lines_for_level('warning')
self.assertIn('Audit warnings for shard %s' % broker.db_file, lines[0])
self.assertNotIn('account not in shards namespace', lines[0])
self.assertNotIn('missing own shard range', lines[0])
self.assertIn('root has no matching shard range', lines[0])
self.assertNotIn('unable to get shard ranges from root', lines[0])
self._assert_stats(expected_stats, sharder, 'audit_shard')
self.assertFalse(lines[1:])
self.assertFalse(sharder.logger.get_lines_for_level('error'))
self.assertFalse(broker.is_deleted())
expected_headers = {'X-Backend-Record-Type': 'shard',
'X-Newest': 'true',
'X-Backend-Include-Deleted': 'True',
'X-Backend-Override-Deleted': 'true'}
params = {'format': 'json', 'marker': 'j', 'end_marker': 'k'}
mock_swift.make_request.assert_called_once_with(
'GET', '/v1/a/c', expected_headers, acceptable_statuses=(2,),
params=params)
# create own shard range, failed response from root
expected_stats = {'attempted': 1, 'success': 1, 'failure': 0}
own_shard_range = broker.get_own_shard_range() # get the default
own_shard_range.lower = 'j'
own_shard_range.upper = 'k'
broker.merge_shard_ranges([own_shard_range])
sharder, mock_swift = call_audit_container(
exc=internal_client.UnexpectedResponse('bad', 'resp'))
lines = sharder.logger.get_lines_for_level('warning')
self.assertIn('Failed to get shard ranges', lines[0])
self.assertIn('Audit warnings for shard %s' % broker.db_file, lines[1])
self.assertNotIn('account not in shards namespace', lines[1])
self.assertNotIn('missing own shard range', lines[1])
self.assertNotIn('root has no matching shard range', lines[1])
self.assertIn('unable to get shard ranges from root', lines[1])
self._assert_stats(expected_stats, sharder, 'audit_shard')
self.assertFalse(lines[2:])
self.assertFalse(sharder.logger.get_lines_for_level('error'))
self.assertFalse(broker.is_deleted())
mock_swift.make_request.assert_called_once_with(
'GET', '/v1/a/c', expected_headers, acceptable_statuses=(2,),
params=params)
def assert_ok():
sharder, mock_swift = call_audit_container()
self.assertFalse(sharder.logger.get_lines_for_level('warning'))
self.assertFalse(sharder.logger.get_lines_for_level('error'))
self._assert_stats(expected_stats, sharder, 'audit_shard')
params = {'format': 'json', 'marker': 'k', 'end_marker': 't'}
mock_swift.make_request.assert_called_once_with(
'GET', '/v1/a/c', expected_headers, acceptable_statuses=(2,),
params=params)
# make own shard range match one in root, but different state
shard_ranges[1].timestamp = Timestamp.now()
broker.merge_shard_ranges([shard_ranges[1]])
now = Timestamp.now()
shard_ranges[1].update_state(ShardRange.SHARDING, state_timestamp=now)
assert_ok()
self.assertFalse(broker.is_deleted())
# own shard range state is updated from root version
own_shard_range = broker.get_own_shard_range()
self.assertEqual(ShardRange.SHARDING, own_shard_range.state)
self.assertEqual(now, own_shard_range.state_timestamp)
own_shard_range.update_state(ShardRange.SHARDED,
state_timestamp=Timestamp.now())
broker.merge_shard_ranges([own_shard_range])
assert_ok()
own_shard_range.deleted = 1
own_shard_range.timestamp = Timestamp.now()
broker.merge_shard_ranges([own_shard_range])
assert_ok()
self.assertTrue(broker.is_deleted())
def test_audit_shard_container(self):
broker = self._make_broker(account='.shards_a', container='shard_c')
broker.set_sharding_sysmeta('Quoted-Root', 'a/c')
# include overlaps to verify correct match for updating own shard range
shard_bounds = (
('a', 'j'), ('k', 't'), ('k', 's'), ('l', 's'), ('s', 'z'))
shard_ranges = self._make_shard_ranges(shard_bounds, ShardRange.ACTIVE)
shard_ranges[1].name = broker.path
expected_stats = {'attempted': 1, 'success': 0, 'failure': 1}
def call_audit_container(exc=None):
with self._mock_sharder() as sharder:
with mock.patch.object(sharder, '_audit_root_container') \
as mocked, mock.patch.object(
sharder, 'int_client') as mock_swift:
mock_response = mock.MagicMock()
mock_response.headers = {'x-backend-record-type':
'shard'}
mock_response.body = json.dumps(
[dict(sr) for sr in shard_ranges])
mock_swift.make_request.return_value = mock_response
mock_swift.make_request.side_effect = exc
mock_swift.make_path = (lambda a, c:
'/v1/%s/%s' % (a, c))
sharder.reclaim_age = 0
sharder._audit_container(broker)
mocked.assert_not_called()
return sharder, mock_swift
# bad account name
broker.account = 'bad_account'
sharder, mock_swift = call_audit_container()
lines = sharder.logger.get_lines_for_level('warning')
self._assert_stats(expected_stats, sharder, 'audit_shard')
self.assertIn('Audit warnings for shard %s' % broker.db_file, lines[0])
self.assertIn('account not in shards namespace', lines[0])
self.assertNotIn('root has no matching shard range', lines[0])
self.assertNotIn('unable to get shard ranges from root', lines[0])
self.assertIn('Audit failed for shard %s' % broker.db_file, lines[1])
self.assertIn('missing own shard range', lines[1])
self.assertFalse(lines[2:])
self.assertFalse(broker.is_deleted())
# missing own shard range
broker.get_info()
sharder, mock_swift = call_audit_container()
lines = sharder.logger.get_lines_for_level('warning')
self._assert_stats(expected_stats, sharder, 'audit_shard')
self.assertIn('Audit failed for shard %s' % broker.db_file, lines[0])
self.assertIn('missing own shard range', lines[0])
self.assertNotIn('unable to get shard ranges from root', lines[0])
self.assertFalse(lines[1:])
self.assertFalse(sharder.logger.get_lines_for_level('error'))
self.assertFalse(broker.is_deleted())
# create own shard range, no match in root
expected_stats = {'attempted': 1, 'success': 1, 'failure': 0}
own_shard_range = broker.get_own_shard_range() # get the default
own_shard_range.lower = 'j'
own_shard_range.upper = 'k'
broker.merge_shard_ranges([own_shard_range])
sharder, mock_swift = call_audit_container()
lines = sharder.logger.get_lines_for_level('warning')
self.assertIn('Audit warnings for shard %s' % broker.db_file, lines[0])
self.assertNotIn('account not in shards namespace', lines[0])
self.assertNotIn('missing own shard range', lines[0])
self.assertIn('root has no matching shard range', lines[0])
self.assertNotIn('unable to get shard ranges from root', lines[0])
self._assert_stats(expected_stats, sharder, 'audit_shard')
self.assertFalse(lines[1:])
self.assertFalse(sharder.logger.get_lines_for_level('error'))
self.assertFalse(broker.is_deleted())
expected_headers = {'X-Backend-Record-Type': 'shard',
'X-Newest': 'true',
'X-Backend-Include-Deleted': 'True',
'X-Backend-Override-Deleted': 'true'}
params = {'format': 'json', 'marker': 'j', 'end_marker': 'k'}
mock_swift.make_request.assert_called_once_with(
'GET', '/v1/a/c', expected_headers, acceptable_statuses=(2,),
params=params)
# create own shard range, failed response from root
expected_stats = {'attempted': 1, 'success': 1, 'failure': 0}
own_shard_range = broker.get_own_shard_range() # get the default
own_shard_range.lower = 'j'
own_shard_range.upper = 'k'
broker.merge_shard_ranges([own_shard_range])
sharder, mock_swift = call_audit_container(
exc=internal_client.UnexpectedResponse('bad', 'resp'))
lines = sharder.logger.get_lines_for_level('warning')
self.assertIn('Failed to get shard ranges', lines[0])
self.assertIn('Audit warnings for shard %s' % broker.db_file, lines[1])
self.assertNotIn('account not in shards namespace', lines[1])
self.assertNotIn('missing own shard range', lines[1])
self.assertNotIn('root has no matching shard range', lines[1])
self.assertIn('unable to get shard ranges from root', lines[1])
self._assert_stats(expected_stats, sharder, 'audit_shard')
self.assertFalse(lines[2:])
self.assertFalse(sharder.logger.get_lines_for_level('error'))
self.assertFalse(broker.is_deleted())
mock_swift.make_request.assert_called_once_with(
'GET', '/v1/a/c', expected_headers, acceptable_statuses=(2,),
params=params)
def assert_ok():
sharder, mock_swift = call_audit_container()
self.assertFalse(sharder.logger.get_lines_for_level('warning'))
self.assertFalse(sharder.logger.get_lines_for_level('error'))
self._assert_stats(expected_stats, sharder, 'audit_shard')
params = {'format': 'json', 'marker': 'k', 'end_marker': 't'}
mock_swift.make_request.assert_called_once_with(
'GET', '/v1/a/c', expected_headers, acceptable_statuses=(2,),
params=params)
# make own shard range match one in root, but different state
shard_ranges[1].timestamp = Timestamp.now()
broker.merge_shard_ranges([shard_ranges[1]])
now = Timestamp.now()
shard_ranges[1].update_state(ShardRange.SHARDING, state_timestamp=now)
assert_ok()
self.assertFalse(broker.is_deleted())
# own shard range state is updated from root version
own_shard_range = broker.get_own_shard_range()
self.assertEqual(ShardRange.SHARDING, own_shard_range.state)
self.assertEqual(now, own_shard_range.state_timestamp)
own_shard_range.update_state(ShardRange.SHARDED,
state_timestamp=Timestamp.now())
broker.merge_shard_ranges([own_shard_range])
assert_ok()
own_shard_range.deleted = 1
own_shard_range.timestamp = Timestamp.now()
broker.merge_shard_ranges([own_shard_range])
assert_ok()
self.assertTrue(broker.is_deleted())
def test_find_and_enable_sharding_candidates(self):
broker = self._make_broker()
broker.enable_sharding(next(self.ts_iter))
shard_bounds = (('', 'here'), ('here', 'there'), ('there', ''))
shard_ranges = self._make_shard_ranges(
shard_bounds, state=ShardRange.CLEAVED)
shard_ranges[0].state = ShardRange.ACTIVE
broker.merge_shard_ranges(shard_ranges)
self.assertTrue(broker.set_sharding_state())
self.assertTrue(broker.set_sharded_state())
with self._mock_sharder() as sharder:
sharder._find_and_enable_sharding_candidates(broker)
# one range just below threshold
shard_ranges[0].update_meta(sharder.shard_container_threshold - 1, 0)
broker.merge_shard_ranges(shard_ranges[0])
with self._mock_sharder() as sharder:
sharder._find_and_enable_sharding_candidates(broker)
self._assert_shard_ranges_equal(shard_ranges,
broker.get_shard_ranges())
# two ranges above threshold, only one ACTIVE
shard_ranges[0].update_meta(sharder.shard_container_threshold, 0)
shard_ranges[2].update_meta(sharder.shard_container_threshold + 1, 0)
broker.merge_shard_ranges([shard_ranges[0], shard_ranges[2]])
with self._mock_sharder() as sharder:
with mock_timestamp_now() as now:
sharder._find_and_enable_sharding_candidates(broker)
expected = shard_ranges[0].copy(state=ShardRange.SHARDING,
state_timestamp=now, epoch=now)
self._assert_shard_ranges_equal([expected] + shard_ranges[1:],
broker.get_shard_ranges())
# check idempotency
with self._mock_sharder() as sharder:
with mock_timestamp_now() as now:
sharder._find_and_enable_sharding_candidates(broker)
self._assert_shard_ranges_equal([expected] + shard_ranges[1:],
broker.get_shard_ranges())
# two ranges above threshold, both ACTIVE
shard_ranges[2].update_state(ShardRange.ACTIVE)
broker.merge_shard_ranges(shard_ranges[2])
with self._mock_sharder() as sharder:
with mock_timestamp_now() as now:
sharder._find_and_enable_sharding_candidates(broker)
expected_2 = shard_ranges[2].copy(state=ShardRange.SHARDING,
state_timestamp=now, epoch=now)
self._assert_shard_ranges_equal(
[expected, shard_ranges[1], expected_2], broker.get_shard_ranges())
# check idempotency
with self._mock_sharder() as sharder:
with mock_timestamp_now() as now:
sharder._find_and_enable_sharding_candidates(broker)
self._assert_shard_ranges_equal(
[expected, shard_ranges[1], expected_2], broker.get_shard_ranges())
def test_find_and_enable_sharding_candidates_bootstrap(self):
broker = self._make_broker()
with self._mock_sharder(
conf={'shard_container_threshold': 1}) as sharder:
sharder._find_and_enable_sharding_candidates(broker)
self.assertEqual(ShardRange.ACTIVE, broker.get_own_shard_range().state)
broker.put_object('obj', next(self.ts_iter).internal, 1, '', '')
self.assertEqual(1, broker.get_info()['object_count'])
with self._mock_sharder(
conf={'shard_container_threshold': 1}) as sharder:
with mock_timestamp_now() as now:
sharder._find_and_enable_sharding_candidates(
broker, [broker.get_own_shard_range()])
own_sr = broker.get_own_shard_range()
self.assertEqual(ShardRange.SHARDING, own_sr.state)
self.assertEqual(now, own_sr.state_timestamp)
self.assertEqual(now, own_sr.epoch)
# check idempotency
with self._mock_sharder(
conf={'shard_container_threshold': 1}) as sharder:
with mock_timestamp_now():
sharder._find_and_enable_sharding_candidates(
broker, [broker.get_own_shard_range()])
own_sr = broker.get_own_shard_range()
self.assertEqual(ShardRange.SHARDING, own_sr.state)
self.assertEqual(now, own_sr.state_timestamp)
self.assertEqual(now, own_sr.epoch)
def test_find_and_enable_shrinking_candidates(self):
broker = self._make_broker()
broker.enable_sharding(next(self.ts_iter))
shard_bounds = (('', 'here'), ('here', 'there'), ('there', ''))
size = (DEFAULT_SHARD_SHRINK_POINT *
DEFAULT_SHARD_CONTAINER_THRESHOLD / 100)
shard_ranges = self._make_shard_ranges(
shard_bounds, state=ShardRange.ACTIVE, object_count=size)
broker.merge_shard_ranges(shard_ranges)
self.assertTrue(broker.set_sharding_state())
self.assertTrue(broker.set_sharded_state())
with self._mock_sharder() as sharder:
sharder._find_and_enable_shrinking_candidates(broker)
self._assert_shard_ranges_equal(shard_ranges,
broker.get_shard_ranges())
# one range just below threshold
shard_ranges[0].update_meta(size - 1, 0)
broker.merge_shard_ranges(shard_ranges[0])
with self._mock_sharder() as sharder:
with mock_timestamp_now() as now:
sharder._send_shard_ranges = mock.MagicMock()
sharder._find_and_enable_shrinking_candidates(broker)
acceptor = shard_ranges[1].copy(lower=shard_ranges[0].lower)
acceptor.timestamp = now
donor = shard_ranges[0].copy(state=ShardRange.SHRINKING,
state_timestamp=now, epoch=now)
self._assert_shard_ranges_equal([donor, acceptor, shard_ranges[2]],
broker.get_shard_ranges())
sharder._send_shard_ranges.assert_has_calls(
[mock.call(acceptor.account, acceptor.container, [acceptor]),
mock.call(donor.account, donor.container, [donor, acceptor])]
)
# check idempotency
with self._mock_sharder() as sharder:
with mock_timestamp_now() as now:
sharder._send_shard_ranges = mock.MagicMock()
sharder._find_and_enable_shrinking_candidates(broker)
self._assert_shard_ranges_equal([donor, acceptor, shard_ranges[2]],
broker.get_shard_ranges())
sharder._send_shard_ranges.assert_has_calls(
[mock.call(acceptor.account, acceptor.container, [acceptor]),
mock.call(donor.account, donor.container, [donor, acceptor])]
)
# acceptor falls below threshold - not a candidate
with self._mock_sharder() as sharder:
with mock_timestamp_now() as now:
acceptor.update_meta(0, 0, meta_timestamp=now)
broker.merge_shard_ranges(acceptor)
sharder._send_shard_ranges = mock.MagicMock()
sharder._find_and_enable_shrinking_candidates(broker)
self._assert_shard_ranges_equal([donor, acceptor, shard_ranges[2]],
broker.get_shard_ranges())
sharder._send_shard_ranges.assert_has_calls(
[mock.call(acceptor.account, acceptor.container, [acceptor]),
mock.call(donor.account, donor.container, [donor, acceptor])]
)
# ...until donor has shrunk
with self._mock_sharder() as sharder:
with mock_timestamp_now() as now:
donor.update_state(ShardRange.SHARDED, state_timestamp=now)
donor.set_deleted(timestamp=now)
broker.merge_shard_ranges(donor)
sharder._send_shard_ranges = mock.MagicMock()
sharder._find_and_enable_shrinking_candidates(broker)
new_acceptor = shard_ranges[2].copy(lower=acceptor.lower)
new_acceptor.timestamp = now
new_donor = acceptor.copy(state=ShardRange.SHRINKING,
state_timestamp=now, epoch=now)
self._assert_shard_ranges_equal(
[donor, new_donor, new_acceptor],
broker.get_shard_ranges(include_deleted=True))
sharder._send_shard_ranges.assert_has_calls(
[mock.call(new_acceptor.account, new_acceptor.container,
[new_acceptor]),
mock.call(new_donor.account, new_donor.container,
[new_donor, new_acceptor])]
)
# ..finally last shard shrinks to root
with self._mock_sharder() as sharder:
with mock_timestamp_now() as now:
new_donor.update_state(ShardRange.SHARDED, state_timestamp=now)
new_donor.set_deleted(timestamp=now)
new_acceptor.update_meta(0, 0, meta_timestamp=now)
broker.merge_shard_ranges([new_donor, new_acceptor])
sharder._send_shard_ranges = mock.MagicMock()
sharder._find_and_enable_shrinking_candidates(broker)
final_donor = new_acceptor.copy(state=ShardRange.SHRINKING,
state_timestamp=now, epoch=now)
self._assert_shard_ranges_equal(
[donor, new_donor, final_donor],
broker.get_shard_ranges(include_deleted=True))
sharder._send_shard_ranges.assert_has_calls(
[mock.call(final_donor.account, final_donor.container,
[final_donor, broker.get_own_shard_range()])]
)
def test_partition_and_device_filters(self):
# verify partitions and devices kwargs result in filtering of processed
# containers but not of the local device ids.
ring = FakeRing()
dev_ids = set()
container_data = []
for dev in ring.devs:
dev_ids.add(dev['id'])
part = str(dev['id'])
broker = self._make_broker(
container='c%s' % dev['id'], hash_='c%shash' % dev['id'],
device=dev['device'], part=part)
broker.update_metadata({'X-Container-Sysmeta-Sharding':
('true', next(self.ts_iter).internal)})
container_data.append((broker.path, dev['id'], part))
with self._mock_sharder() as sharder:
sharder.ring = ring
sharder._check_node = lambda node: os.path.join(
sharder.conf['devices'], node['device'])
with mock.patch.object(
sharder, '_process_broker') as mock_process_broker:
sharder.run_once()
self.assertEqual(dev_ids, set(sharder._local_device_ids))
self.assertEqual(set(container_data),
set((call[0][0].path, call[0][1]['id'], call[0][2])
for call in mock_process_broker.call_args_list))
with self._mock_sharder() as sharder:
sharder.ring = ring
sharder._check_node = lambda node: os.path.join(
sharder.conf['devices'], node['device'])
with mock.patch.object(
sharder, '_process_broker') as mock_process_broker:
sharder.run_once(partitions='0')
self.assertEqual(dev_ids, set(sharder._local_device_ids))
self.assertEqual(set([container_data[0]]),
set((call[0][0].path, call[0][1]['id'], call[0][2])
for call in mock_process_broker.call_args_list))
with self._mock_sharder() as sharder:
sharder.ring = ring
sharder._check_node = lambda node: os.path.join(
sharder.conf['devices'], node['device'])
with mock.patch.object(
sharder, '_process_broker') as mock_process_broker:
sharder.run_once(partitions='2,0')
self.assertEqual(dev_ids, set(sharder._local_device_ids))
self.assertEqual(set([container_data[0], container_data[2]]),
set((call[0][0].path, call[0][1]['id'], call[0][2])
for call in mock_process_broker.call_args_list))
with self._mock_sharder() as sharder:
sharder.ring = ring
sharder._check_node = lambda node: os.path.join(
sharder.conf['devices'], node['device'])
with mock.patch.object(
sharder, '_process_broker') as mock_process_broker:
sharder.run_once(partitions='2,0', devices='sdc')
self.assertEqual(dev_ids, set(sharder._local_device_ids))
self.assertEqual(set([container_data[2]]),
set((call[0][0].path, call[0][1]['id'], call[0][2])
for call in mock_process_broker.call_args_list))
with self._mock_sharder() as sharder:
sharder.ring = ring
sharder._check_node = lambda node: os.path.join(
sharder.conf['devices'], node['device'])
with mock.patch.object(
sharder, '_process_broker') as mock_process_broker:
sharder.run_once(devices='sdb,sdc')
self.assertEqual(dev_ids, set(sharder._local_device_ids))
self.assertEqual(set(container_data[1:]),
set((call[0][0].path, call[0][1]['id'], call[0][2])
for call in mock_process_broker.call_args_list))
def test_audit_cleave_contexts(self):
def add_cleave_context(id, last_modified):
params = {'ref': id,
'cursor': 'curs',
'max_row': 2,
'cleave_to_row': 2,
'last_cleave_to_row': 1,
'cleaving_done': False,
'misplaced_done': True,
'ranges_done': 2,
'ranges_todo': 4}
key = 'X-Container-Sysmeta-Shard-Context-%s' % id
with mock_timestamp_now(Timestamp(last_modified)):
broker.update_metadata(
{key: (json.dumps(params),
Timestamp(last_modified).internal)})
def get_context(id, broker):
data = broker.get_sharding_sysmeta().get('Context-%s' % id)
if data:
return CleavingContext(**json.loads(data))
return data
reclaim_age = 100
broker = self._make_broker()
# sanity check
self.assertIsNone(broker.get_own_shard_range(no_default=True))
self.assertEqual(UNSHARDED, broker.get_db_state())
# Setup some cleaving contexts
id_old, id_newish = [str(uuid4()) for _ in range(2)]
contexts = ((id_old, 1),
(id_newish, reclaim_age // 2))
for id, last_modified in contexts:
add_cleave_context(id, last_modified)
with self._mock_sharder({'reclaim_age': str(reclaim_age)}) as sharder:
with mock_timestamp_now(Timestamp(reclaim_age + 2)):
sharder._audit_cleave_contexts(broker)
old_ctx = get_context(id_old, broker)
self.assertEqual(old_ctx, "")
newish_ctx = get_context(id_newish, broker)
self.assertEqual(newish_ctx.ref, id_newish)
# If we push time another reclaim age later, and they all be removed
# minus id_missing_lm as it has a later last_modified.
with self._mock_sharder({'reclaim_age': str(reclaim_age)}) as sharder:
with mock_timestamp_now(Timestamp(reclaim_age * 2)):
sharder._audit_cleave_contexts(broker)
newish_ctx = get_context(id_newish, broker)
self.assertEqual(newish_ctx, "")
class TestCleavingContext(BaseTestSharder):
def test_init(self):
ctx = CleavingContext(ref='test')
self.assertEqual('test', ctx.ref)
self.assertEqual('', ctx.cursor)
self.assertIsNone(ctx.max_row)
self.assertIsNone(ctx.cleave_to_row)
self.assertIsNone(ctx.last_cleave_to_row)
self.assertFalse(ctx.misplaced_done)
self.assertFalse(ctx.cleaving_done)
def test_iter(self):
ctx = CleavingContext('test', 'curs', 12, 11, 10, False, True, 0, 4)
expected = {'ref': 'test',
'cursor': 'curs',
'max_row': 12,
'cleave_to_row': 11,
'last_cleave_to_row': 10,
'cleaving_done': False,
'misplaced_done': True,
'ranges_done': 0,
'ranges_todo': 4}
self.assertEqual(expected, dict(ctx))
def test_cursor(self):
broker = self._make_broker()
ref = CleavingContext._make_ref(broker)
for curs in ('curs', u'curs\u00e4\u00fb'):
with annotate_failure('%r' % curs):
expected = curs.encode('utf-8') if six.PY2 else curs
ctx = CleavingContext(ref, curs, 12, 11, 10, False, True)
self.assertEqual(dict(ctx), {
'cursor': expected,
'max_row': 12,
'cleave_to_row': 11,
'last_cleave_to_row': 10,
'cleaving_done': False,
'misplaced_done': True,
'ranges_done': 0,
'ranges_todo': 0,
'ref': ref,
})
self.assertEqual(expected, ctx.cursor)
ctx.store(broker)
reloaded_ctx = CleavingContext.load(broker)
self.assertEqual(expected, reloaded_ctx.cursor)
# Since we reloaded, the max row gets updated from the broker
self.assertEqual(reloaded_ctx.max_row, -1)
# reset it so the dict comparison will succeed
reloaded_ctx.max_row = 12
self.assertEqual(dict(ctx), dict(reloaded_ctx))
def test_load(self):
broker = self._make_broker()
for i in range(6):
broker.put_object('o%s' % i, next(self.ts_iter).internal, 10,
'text/plain', 'etag_a', 0)
db_id = broker.get_info()['id']
params = {'ref': db_id,
'cursor': 'curs',
'max_row': 2,
'cleave_to_row': 2,
'last_cleave_to_row': 1,
'cleaving_done': False,
'misplaced_done': True,
'ranges_done': 2,
'ranges_todo': 4}
key = 'X-Container-Sysmeta-Shard-Context-%s' % db_id
broker.update_metadata(
{key: (json.dumps(params), Timestamp.now().internal)})
ctx = CleavingContext.load(broker)
self.assertEqual(db_id, ctx.ref)
self.assertEqual('curs', ctx.cursor)
# note max_row is dynamically updated during load
self.assertEqual(6, ctx.max_row)
self.assertEqual(2, ctx.cleave_to_row)
self.assertEqual(1, ctx.last_cleave_to_row)
self.assertTrue(ctx.misplaced_done)
self.assertFalse(ctx.cleaving_done)
self.assertEqual(2, ctx.ranges_done)
self.assertEqual(4, ctx.ranges_todo)
def test_load_all(self):
broker = self._make_broker()
last_ctx = None
timestamp = Timestamp.now()
db_ids = [str(uuid4()) for _ in range(6)]
for db_id in db_ids:
params = {'ref': db_id,
'cursor': 'curs',
'max_row': 2,
'cleave_to_row': 2,
'last_cleave_to_row': 1,
'cleaving_done': False,
'misplaced_done': True,
'ranges_done': 2,
'ranges_todo': 4}
key = 'X-Container-Sysmeta-Shard-Context-%s' % db_id
broker.update_metadata(
{key: (json.dumps(params), timestamp.internal)})
first_ctx = None
for ctx, lm in CleavingContext.load_all(broker):
if not first_ctx:
first_ctx = ctx
last_ctx = ctx
self.assertIn(ctx.ref, db_ids)
self.assertEqual(lm, timestamp.internal)
# If a context is deleted (metadata is "") then it's skipped
last_ctx.delete(broker)
db_ids.remove(last_ctx.ref)
# and let's modify the first
with mock_timestamp_now() as new_timestamp:
first_ctx.store(broker)
for ctx, lm in CleavingContext.load_all(broker):
self.assertIn(ctx.ref, db_ids)
if ctx.ref == first_ctx.ref:
self.assertEqual(lm, new_timestamp.internal)
else:
self.assertEqual(lm, timestamp.internal)
def test_delete(self):
broker = self._make_broker()
db_id = broker.get_info()['id']
params = {'ref': db_id,
'cursor': 'curs',
'max_row': 2,
'cleave_to_row': 2,
'last_cleave_to_row': 1,
'cleaving_done': False,
'misplaced_done': True,
'ranges_done': 2,
'ranges_todo': 4}
key = 'X-Container-Sysmeta-Shard-Context-%s' % db_id
broker.update_metadata(
{key: (json.dumps(params), Timestamp.now().internal)})
ctx = CleavingContext.load(broker)
self.assertEqual(db_id, ctx.ref)
# Now let's delete it. When deleted the metadata key will exist, but
# the value will be "" as this means it'll be reaped later.
ctx.delete(broker)
sysmeta = broker.get_sharding_sysmeta()
for key, val in sysmeta.items():
if key == "Context-%s" % db_id:
self.assertEqual(val, "")
break
else:
self.fail("Deleted context 'Context-%s' not found")
def test_store_old_style(self):
broker = self._make_old_style_sharding_broker()
old_db_id = broker.get_brokers()[0].get_info()['id']
last_mod = Timestamp.now()
ctx = CleavingContext(old_db_id, 'curs', 12, 11, 2, True, True, 2, 4)
with mock_timestamp_now(last_mod):
ctx.store(broker)
key = 'X-Container-Sysmeta-Shard-Context-%s' % old_db_id
data = json.loads(broker.metadata[key][0])
expected = {'ref': old_db_id,
'cursor': 'curs',
'max_row': 12,
'cleave_to_row': 11,
'last_cleave_to_row': 2,
'cleaving_done': True,
'misplaced_done': True,
'ranges_done': 2,
'ranges_todo': 4}
self.assertEqual(expected, data)
# last modified is the metadata timestamp
self.assertEqual(broker.metadata[key][1], last_mod.internal)
def test_store_add_row_load_old_style(self):
# adding row to older db changes only max_row in the context
broker = self._make_old_style_sharding_broker()
old_broker = broker.get_brokers()[0]
old_db_id = old_broker.get_info()['id']
old_broker.merge_items([old_broker._record_to_dict(
('obj', next(self.ts_iter).internal, 0, 'text/plain', 'etag', 1))])
old_max_row = old_broker.get_max_row()
self.assertEqual(1, old_max_row) # sanity check
ctx = CleavingContext(old_db_id, 'curs', 1, 1, 0, True, True)
ctx.store(broker)
# adding a row changes max row
old_broker.merge_items([old_broker._record_to_dict(
('obj', next(self.ts_iter).internal, 0, 'text/plain', 'etag', 1))])
new_ctx = CleavingContext.load(broker)
self.assertEqual(old_db_id, new_ctx.ref)
self.assertEqual('curs', new_ctx.cursor)
self.assertEqual(2, new_ctx.max_row)
self.assertEqual(1, new_ctx.cleave_to_row)
self.assertEqual(0, new_ctx.last_cleave_to_row)
self.assertTrue(new_ctx.misplaced_done)
self.assertTrue(new_ctx.cleaving_done)
def test_store_reclaim_load_old_style(self):
# reclaiming rows from older db does not change context
broker = self._make_old_style_sharding_broker()
old_broker = broker.get_brokers()[0]
old_db_id = old_broker.get_info()['id']
old_broker.merge_items([old_broker._record_to_dict(
('obj', next(self.ts_iter).internal, 0, 'text/plain', 'etag', 1))])
old_max_row = old_broker.get_max_row()
self.assertEqual(1, old_max_row) # sanity check
ctx = CleavingContext(old_db_id, 'curs', 1, 1, 0, True, True)
ctx.store(broker)
self.assertEqual(
1, len(old_broker.get_objects()))
now = next(self.ts_iter).internal
broker.get_brokers()[0].reclaim(now, now)
self.assertFalse(old_broker.get_objects())
new_ctx = CleavingContext.load(broker)
self.assertEqual(old_db_id, new_ctx.ref)
self.assertEqual('curs', new_ctx.cursor)
self.assertEqual(1, new_ctx.max_row)
self.assertEqual(1, new_ctx.cleave_to_row)
self.assertEqual(0, new_ctx.last_cleave_to_row)
self.assertTrue(new_ctx.misplaced_done)
self.assertTrue(new_ctx.cleaving_done)
def test_store_modify_db_id_load_old_style(self):
# changing id changes ref, so results in a fresh context
broker = self._make_old_style_sharding_broker()
old_broker = broker.get_brokers()[0]
old_db_id = old_broker.get_info()['id']
ctx = CleavingContext(old_db_id, 'curs', 12, 11, 2, True, True)
ctx.store(broker)
old_broker.newid('fake_remote_id')
new_db_id = old_broker.get_info()['id']
self.assertNotEqual(old_db_id, new_db_id)
new_ctx = CleavingContext.load(broker)
self.assertEqual(new_db_id, new_ctx.ref)
self.assertEqual('', new_ctx.cursor)
# note max_row is dynamically updated during load
self.assertEqual(-1, new_ctx.max_row)
self.assertEqual(None, new_ctx.cleave_to_row)
self.assertEqual(None, new_ctx.last_cleave_to_row)
self.assertFalse(new_ctx.misplaced_done)
self.assertFalse(new_ctx.cleaving_done)
def test_load_modify_store_load_old_style(self):
broker = self._make_old_style_sharding_broker()
old_db_id = broker.get_brokers()[0].get_info()['id']
ctx = CleavingContext.load(broker)
self.assertEqual(old_db_id, ctx.ref)
self.assertEqual('', ctx.cursor) # sanity check
ctx.cursor = 'curs'
ctx.misplaced_done = True
ctx.store(broker)
ctx = CleavingContext.load(broker)
self.assertEqual(old_db_id, ctx.ref)
self.assertEqual('curs', ctx.cursor)
self.assertTrue(ctx.misplaced_done)
def test_store(self):
broker = self._make_sharding_broker()
old_db_id = broker.get_brokers()[0].get_info()['id']
last_mod = Timestamp.now()
ctx = CleavingContext(old_db_id, 'curs', 12, 11, 2, True, True, 2, 4)
with mock_timestamp_now(last_mod):
ctx.store(broker)
key = 'X-Container-Sysmeta-Shard-Context-%s' % old_db_id
data = json.loads(broker.metadata[key][0])
expected = {'ref': old_db_id,
'cursor': 'curs',
'max_row': 12,
'cleave_to_row': 11,
'last_cleave_to_row': 2,
'cleaving_done': True,
'misplaced_done': True,
'ranges_done': 2,
'ranges_todo': 4}
self.assertEqual(expected, data)
# last modified is the metadata timestamp
self.assertEqual(broker.metadata[key][1], last_mod.internal)
def test_store_add_row_load(self):
# adding row to older db changes only max_row in the context
broker = self._make_sharding_broker()
old_broker = broker.get_brokers()[0]
old_db_id = old_broker.get_info()['id']
old_broker.merge_items([old_broker._record_to_dict(
('obj', next(self.ts_iter).internal, 0, 'text/plain', 'etag', 1))])
old_max_row = old_broker.get_max_row()
self.assertEqual(1, old_max_row) # sanity check
ctx = CleavingContext(old_db_id, 'curs', 1, 1, 0, True, True)
ctx.store(broker)
# adding a row changes max row
old_broker.merge_items([old_broker._record_to_dict(
('obj', next(self.ts_iter).internal, 0, 'text/plain', 'etag', 1))])
new_ctx = CleavingContext.load(broker)
self.assertEqual(old_db_id, new_ctx.ref)
self.assertEqual('curs', new_ctx.cursor)
self.assertEqual(2, new_ctx.max_row)
self.assertEqual(1, new_ctx.cleave_to_row)
self.assertEqual(0, new_ctx.last_cleave_to_row)
self.assertTrue(new_ctx.misplaced_done)
self.assertTrue(new_ctx.cleaving_done)
def test_store_reclaim_load(self):
# reclaiming rows from older db does not change context
broker = self._make_sharding_broker()
old_broker = broker.get_brokers()[0]
old_db_id = old_broker.get_info()['id']
old_broker.merge_items([old_broker._record_to_dict(
('obj', next(self.ts_iter).internal, 0, 'text/plain', 'etag', 1))])
old_max_row = old_broker.get_max_row()
self.assertEqual(1, old_max_row) # sanity check
ctx = CleavingContext(old_db_id, 'curs', 1, 1, 0, True, True)
ctx.store(broker)
self.assertEqual(
1, len(old_broker.get_objects()))
now = next(self.ts_iter).internal
broker.get_brokers()[0].reclaim(now, now)
self.assertFalse(old_broker.get_objects())
new_ctx = CleavingContext.load(broker)
self.assertEqual(old_db_id, new_ctx.ref)
self.assertEqual('curs', new_ctx.cursor)
self.assertEqual(1, new_ctx.max_row)
self.assertEqual(1, new_ctx.cleave_to_row)
self.assertEqual(0, new_ctx.last_cleave_to_row)
self.assertTrue(new_ctx.misplaced_done)
self.assertTrue(new_ctx.cleaving_done)
def test_store_modify_db_id_load(self):
# changing id changes ref, so results in a fresh context
broker = self._make_sharding_broker()
old_broker = broker.get_brokers()[0]
old_db_id = old_broker.get_info()['id']
ctx = CleavingContext(old_db_id, 'curs', 12, 11, 2, True, True)
ctx.store(broker)
old_broker.newid('fake_remote_id')
new_db_id = old_broker.get_info()['id']
self.assertNotEqual(old_db_id, new_db_id)
new_ctx = CleavingContext.load(broker)
self.assertEqual(new_db_id, new_ctx.ref)
self.assertEqual('', new_ctx.cursor)
# note max_row is dynamically updated during load
self.assertEqual(-1, new_ctx.max_row)
self.assertEqual(None, new_ctx.cleave_to_row)
self.assertEqual(None, new_ctx.last_cleave_to_row)
self.assertFalse(new_ctx.misplaced_done)
self.assertFalse(new_ctx.cleaving_done)
def test_load_modify_store_load(self):
broker = self._make_sharding_broker()
old_db_id = broker.get_brokers()[0].get_info()['id']
ctx = CleavingContext.load(broker)
self.assertEqual(old_db_id, ctx.ref)
self.assertEqual('', ctx.cursor) # sanity check
ctx.cursor = 'curs'
ctx.misplaced_done = True
ctx.store(broker)
ctx = CleavingContext.load(broker)
self.assertEqual(old_db_id, ctx.ref)
self.assertEqual('curs', ctx.cursor)
self.assertTrue(ctx.misplaced_done)
def test_reset(self):
ctx = CleavingContext('test', 'curs', 12, 11, 2, True, True)
def check_context():
self.assertEqual('test', ctx.ref)
self.assertEqual('', ctx.cursor)
self.assertEqual(12, ctx.max_row)
self.assertEqual(11, ctx.cleave_to_row)
self.assertEqual(11, ctx.last_cleave_to_row)
self.assertFalse(ctx.misplaced_done)
self.assertFalse(ctx.cleaving_done)
self.assertEqual(0, ctx.ranges_done)
self.assertEqual(0, ctx.ranges_todo)
ctx.reset()
# check idempotency
ctx.reset()
def test_start(self):
ctx = CleavingContext('test', 'curs', 12, 11, 2, True, True)
def check_context():
self.assertEqual('test', ctx.ref)
self.assertEqual('', ctx.cursor)
self.assertEqual(12, ctx.max_row)
self.assertEqual(12, ctx.cleave_to_row)
self.assertEqual(2, ctx.last_cleave_to_row)
self.assertTrue(ctx.misplaced_done) # *not* reset here
self.assertFalse(ctx.cleaving_done)
self.assertEqual(0, ctx.ranges_done)
self.assertEqual(0, ctx.ranges_todo)
ctx.start()
# check idempotency
ctx.start()