openstack/swift
Code Issues Proposed changes
25ebf3aa9e
swift/test/unit/common/test_db_replicator.py
Cristian A Sanchez fdc775d6d5 Increases the UT coverage of db_replicator.py 
Adds 20 unit tests to increase the coverage of db_replicator.py
from 71% to 90%

Change-Id: Ia63cb8f2049fb3182bbf7af695087bfe15cede54
Closes-Bug: #948179
2013-12-03 14:00:22 -03:00

1232 lines
50 KiB
Python
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# Copyright (c) 2010-2012 OpenStack Foundation
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
# implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import unittest
from contextlib import contextmanager
import os
import logging
import errno
import math
import time
from mock import patch, call
from shutil import rmtree
from tempfile import mkdtemp, NamedTemporaryFile
import mock
import simplejson
from swift.common import db_replicator
from swift.common.utils import normalize_timestamp
from swift.container import server as container_server
from swift.common.exceptions import DriveNotMounted
from swift.common.swob import HTTPException
from test.unit import FakeLogger
TEST_ACCOUNT_NAME = 'a c t'
TEST_CONTAINER_NAME = 'c o n'
def teardown_module():
"clean up my monkey patching"
reload(db_replicator)
@contextmanager
def lock_parent_directory(filename):
yield True
class FakeRing:
class Ring:
devs = []
def __init__(self, path, reload_time=15, ring_name=None):
pass
def get_part(self, account, container=None, obj=None):
return 0
def get_part_nodes(self, part):
return []
def get_more_nodes(self, *args):
return []
class FakeRingWithSingleNode:
class Ring:
devs = [dict(
id=1, weight=10.0, zone=1, ip='1.1.1.1', port=6000, device='sdb',
meta='', replication_ip='1.1.1.1', replication_port=6000
)]
def __init__(self, path, reload_time=15, ring_name=None):
pass
def get_part(self, account, container=None, obj=None):
return 0
def get_part_nodes(self, part):
return self.devs
def get_more_nodes(self, *args):
return (d for d in self.devs)
class FakeRingWithNodes:
class Ring:
devs = [dict(
id=1, weight=10.0, zone=1, ip='1.1.1.1', port=6000, device='sdb',
meta=''
), dict(
id=2, weight=10.0, zone=2, ip='1.1.1.2', port=6000, device='sdb',
meta=''
), dict(
id=3, weight=10.0, zone=3, ip='1.1.1.3', port=6000, device='sdb',
meta=''
), dict(
id=4, weight=10.0, zone=4, ip='1.1.1.4', port=6000, device='sdb',
meta=''
), dict(
id=5, weight=10.0, zone=5, ip='1.1.1.5', port=6000, device='sdb',
meta=''
), dict(
id=6, weight=10.0, zone=6, ip='1.1.1.6', port=6000, device='sdb',
meta='')]
def __init__(self, path, reload_time=15, ring_name=None):
pass
def get_part(self, account, container=None, obj=None):
return 0
def get_part_nodes(self, part):
return self.devs[:3]
def get_more_nodes(self, *args):
return (d for d in self.devs[3:])
class FakeProcess:
def __init__(self, *codes):
self.codes = iter(codes)
self.args = None
self.kwargs = None
def __call__(self, *args, **kwargs):
self.args = args
self.kwargs = kwargs
class Failure:
def communicate(innerself):
next = self.codes.next()
if isinstance(next, int):
innerself.returncode = next
return next
raise next
return Failure()
@contextmanager
def _mock_process(*args):
orig_process = db_replicator.subprocess.Popen
db_replicator.subprocess.Popen = FakeProcess(*args)
yield db_replicator.subprocess.Popen
db_replicator.subprocess.Popen = orig_process
class ReplHttp:
def __init__(self, response=None, set_status=200):
self.response = response
self.set_status = set_status
replicated = False
host = 'localhost'
def replicate(self, *args):
self.replicated = True
class Response:
status = self.set_status
data = self.response
def read(innerself):
return self.response
return Response()
class ChangingMtimesOs:
def __init__(self):
self.mtime = 0
def __call__(self, *args, **kwargs):
self.mtime += 1
return self.mtime
class FakeBroker:
db_file = __file__
get_repl_missing_table = False
stub_replication_info = None
db_type = 'container'
info = {'account': TEST_ACCOUNT_NAME, 'container': TEST_CONTAINER_NAME}
def __init__(self, *args, **kwargs):
self.locked = False
return None
@contextmanager
def lock(self):
self.locked = True
yield True
self.locked = False
def get_sync(self, *args, **kwargs):
return 5
def get_syncs(self):
return []
def get_items_since(self, point, *args):
if point == 0:
return [{'ROWID': 1}]
if point == -1:
return [{'ROWID': 1}, {'ROWID': 2}]
return []
def merge_syncs(self, *args, **kwargs):
self.args = args
def merge_items(self, *args):
self.args = args
def get_replication_info(self):
if self.get_repl_missing_table:
raise Exception('no such table')
if self.stub_replication_info:
return self.stub_replication_info
return {'delete_timestamp': 0, 'put_timestamp': 1, 'count': 0,
'hash': 12345}
def reclaim(self, item_timestamp, sync_timestamp):
pass
def get_info(self):
return self.info
def newid(self, remote_d):
pass
def update_metadata(self, metadata):
self.metadata = metadata
def merge_timestamps(self, created_at, put_timestamp, delete_timestamp):
self.created_at = created_at
self.put_timestamp = put_timestamp
self.delete_timestamp = delete_timestamp
class FakeAccountBroker(FakeBroker):
db_type = 'account'
info = {'account': TEST_ACCOUNT_NAME}
class TestReplicator(db_replicator.Replicator):
server_type = 'container'
ring_file = 'container.ring.gz'
brokerclass = FakeBroker
datadir = container_server.DATADIR
default_port = 1000
class TestDBReplicator(unittest.TestCase):
def setUp(self):
db_replicator.ring = FakeRing()
self.delete_db_calls = []
self._patchers = []
def tearDown(self):
for patcher in self._patchers:
patcher.stop()
def _patch(self, patching_fn, *args, **kwargs):
patcher = patching_fn(*args, **kwargs)
patched_thing = patcher.start()
self._patchers.append(patcher)
return patched_thing
def stub_delete_db(self, object_file):
self.delete_db_calls.append(object_file)
def test_repl_connection(self):
node = {'replication_ip': '127.0.0.1', 'replication_port': 80,
'device': 'sdb1'}
conn = db_replicator.ReplConnection(node, '1234567890', 'abcdefg',
logging.getLogger())
def req(method, path, body, headers):
self.assertEquals(method, 'REPLICATE')
self.assertEquals(headers['Content-Type'], 'application/json')
class Resp:
def read(self):
return 'data'
resp = Resp()
conn.request = req
conn.getresponse = lambda *args: resp
self.assertEquals(conn.replicate(1, 2, 3), resp)
def other_req(method, path, body, headers):
raise Exception('blah')
conn.request = other_req
self.assertEquals(conn.replicate(1, 2, 3), None)
def test_rsync_file(self):
replicator = TestReplicator({})
with _mock_process(-1):
self.assertEquals(
False,
replicator._rsync_file('/some/file', 'remote:/some/file'))
with _mock_process(0):
self.assertEquals(
True,
replicator._rsync_file('/some/file', 'remote:/some/file'))
def test_rsync_file_popen_args(self):
replicator = TestReplicator({})
with _mock_process(0) as process:
replicator._rsync_file('/some/file', 'remote:/some_file')
exp_args = ([
'rsync', '--quiet', '--no-motd',
'--timeout=%s' % int(math.ceil(replicator.node_timeout)),
'--contimeout=%s' % int(math.ceil(replicator.conn_timeout)),
'--whole-file', '/some/file', 'remote:/some_file'],)
self.assertEqual(exp_args, process.args)
def test_rsync_file_popen_args_whole_file_false(self):
replicator = TestReplicator({})
with _mock_process(0) as process:
replicator._rsync_file('/some/file', 'remote:/some_file', False)
exp_args = ([
'rsync', '--quiet', '--no-motd',
'--timeout=%s' % int(math.ceil(replicator.node_timeout)),
'--contimeout=%s' % int(math.ceil(replicator.conn_timeout)),
'/some/file', 'remote:/some_file'],)
self.assertEqual(exp_args, process.args)
def test_rsync_db(self):
replicator = TestReplicator({})
replicator._rsync_file = lambda *args: True
fake_device = {'replication_ip': '127.0.0.1', 'device': 'sda1'}
replicator._rsync_db(FakeBroker(), fake_device, ReplHttp(), 'abcd')
def test_rsync_db_rsync_file_call(self):
fake_device = {'ip': '127.0.0.1', 'port': '0',
'replication_ip': '127.0.0.1', 'replication_port': '0',
'device': 'sda1'}
def mock_rsync_ip(ip):
self.assertEquals(fake_device['ip'], ip)
return 'rsync_ip(%s)' % ip
class MyTestReplicator(TestReplicator):
def __init__(self, db_file, remote_file):
super(MyTestReplicator, self).__init__({})
self.db_file = db_file
self.remote_file = remote_file
def _rsync_file(self_, db_file, remote_file, whole_file=True):
self.assertEqual(self_.db_file, db_file)
self.assertEqual(self_.remote_file, remote_file)
self_._rsync_file_called = True
return False
with patch('swift.common.db_replicator.rsync_ip', mock_rsync_ip):
broker = FakeBroker()
remote_file = 'rsync_ip(127.0.0.1)::container/sda1/tmp/abcd'
replicator = MyTestReplicator(broker.db_file, remote_file)
replicator._rsync_db(broker, fake_device, ReplHttp(), 'abcd')
self.assert_(replicator._rsync_file_called)
with patch('swift.common.db_replicator.rsync_ip', mock_rsync_ip):
broker = FakeBroker()
remote_file = 'rsync_ip(127.0.0.1)::container0/sda1/tmp/abcd'
replicator = MyTestReplicator(broker.db_file, remote_file)
replicator.vm_test_mode = True
replicator._rsync_db(broker, fake_device, ReplHttp(), 'abcd')
self.assert_(replicator._rsync_file_called)
def test_rsync_db_rsync_file_failure(self):
class MyTestReplicator(TestReplicator):
def __init__(self):
super(MyTestReplicator, self).__init__({})
self._rsync_file_called = False
def _rsync_file(self_, *args, **kwargs):
self.assertEqual(
False, self_._rsync_file_called,
'_sync_file() should only be called once')
self_._rsync_file_called = True
return False
with patch('os.path.exists', lambda *args: True):
replicator = MyTestReplicator()
fake_device = {'ip': '127.0.0.1', 'replication_ip': '127.0.0.1',
'device': 'sda1'}
replicator._rsync_db(FakeBroker(), fake_device, ReplHttp(), 'abcd')
self.assertEqual(True, replicator._rsync_file_called)
def test_rsync_db_change_after_sync(self):
class MyTestReplicator(TestReplicator):
def __init__(self, broker):
super(MyTestReplicator, self).__init__({})
self.broker = broker
self._rsync_file_call_count = 0
def _rsync_file(self_, db_file, remote_file, whole_file=True):
self_._rsync_file_call_count += 1
if self_._rsync_file_call_count == 1:
self.assertEquals(True, whole_file)
self.assertEquals(False, self_.broker.locked)
elif self_._rsync_file_call_count == 2:
self.assertEquals(False, whole_file)
self.assertEquals(True, self_.broker.locked)
else:
raise RuntimeError('_rsync_file() called too many times')
return True
# with journal file
with patch('os.path.exists', lambda *args: True):
broker = FakeBroker()
replicator = MyTestReplicator(broker)
fake_device = {'ip': '127.0.0.1', 'replication_ip': '127.0.0.1',
'device': 'sda1'}
replicator._rsync_db(broker, fake_device, ReplHttp(), 'abcd')
self.assertEquals(2, replicator._rsync_file_call_count)
# with new mtime
with patch('os.path.exists', lambda *args: False):
with patch('os.path.getmtime', ChangingMtimesOs()):
broker = FakeBroker()
replicator = MyTestReplicator(broker)
fake_device = {'ip': '127.0.0.1',
'replication_ip': '127.0.0.1',
'device': 'sda1'}
replicator._rsync_db(broker, fake_device, ReplHttp(), 'abcd')
self.assertEquals(2, replicator._rsync_file_call_count)
def test_in_sync(self):
replicator = TestReplicator({})
self.assertEquals(replicator._in_sync(
{'id': 'a', 'point': 0, 'max_row': 0, 'hash': 'b'},
{'id': 'a', 'point': -1, 'max_row': 0, 'hash': 'b'},
FakeBroker(), -1), True)
self.assertEquals(replicator._in_sync(
{'id': 'a', 'point': -1, 'max_row': 0, 'hash': 'b'},
{'id': 'a', 'point': -1, 'max_row': 10, 'hash': 'b'},
FakeBroker(), -1), True)
self.assertEquals(bool(replicator._in_sync(
{'id': 'a', 'point': -1, 'max_row': 0, 'hash': 'c'},
{'id': 'a', 'point': -1, 'max_row': 10, 'hash': 'd'},
FakeBroker(), -1)), False)
def test_run_once(self):
replicator = TestReplicator({})
replicator.run_once()
def test_run_once_no_ips(self):
replicator = TestReplicator({})
replicator.logger = FakeLogger()
self._patch(patch.object, db_replicator, 'whataremyips',
lambda *args: [])
replicator.run_once()
self.assertEqual(
replicator.logger.log_dict['error'],
[(('ERROR Failed to get my own IPs?',), {})])
def test_run_once_node_is_not_mounted(self):
db_replicator.ring = FakeRingWithSingleNode()
replicator = TestReplicator({})
replicator.logger = FakeLogger()
replicator.mount_check = True
replicator.port = 6000
def mock_ismount(path):
self.assertEquals(path,
os.path.join(replicator.root,
replicator.ring.devs[0]['device']))
return False
self._patch(patch.object, db_replicator, 'whataremyips',
lambda *args: ['1.1.1.1'])
self._patch(patch.object, db_replicator, 'ismount', mock_ismount)
replicator.run_once()
self.assertEqual(
replicator.logger.log_dict['warning'],
[(('Skipping %(device)s as it is not mounted' %
replicator.ring.devs[0],), {})])
def test_run_once_node_is_mounted(self):
db_replicator.ring = FakeRingWithSingleNode()
replicator = TestReplicator({})
replicator.logger = FakeLogger()
replicator.mount_check = True
replicator.port = 6000
def mock_unlink_older_than(path, mtime):
self.assertEquals(path,
os.path.join(replicator.root,
replicator.ring.devs[0]['device'],
'tmp'))
self.assertTrue(time.time() - replicator.reclaim_age >= mtime)
def mock_spawn_n(fn, part, object_file, node_id):
self.assertEquals('123', part)
self.assertEquals('/srv/node/sda/c.db', object_file)
self.assertEquals(1, node_id)
self._patch(patch.object, db_replicator, 'whataremyips',
lambda *args: ['1.1.1.1'])
self._patch(patch.object, db_replicator, 'ismount', lambda *args: True)
self._patch(patch.object, db_replicator, 'unlink_older_than',
mock_unlink_older_than)
self._patch(patch.object, db_replicator, 'roundrobin_datadirs',
lambda *args: [('123', '/srv/node/sda/c.db', 1)])
self._patch(patch.object, replicator.cpool, 'spawn_n', mock_spawn_n)
with patch('swift.common.db_replicator.os',
new=mock.MagicMock(wraps=os)) as mock_os:
mock_os.path.isdir.return_value = True
replicator.run_once()
mock_os.path.isdir.assert_called_with(
os.path.join(replicator.root,
replicator.ring.devs[0]['device'],
replicator.datadir))
def test_usync(self):
fake_http = ReplHttp()
replicator = TestReplicator({})
replicator._usync_db(0, FakeBroker(), fake_http, '12345', '67890')
def test_usync_http_error_above_300(self):
fake_http = ReplHttp(set_status=301)
replicator = TestReplicator({})
self.assertFalse(
replicator._usync_db(0, FakeBroker(), fake_http, '12345', '67890'))
def test_usync_http_error_below_200(self):
fake_http = ReplHttp(set_status=101)
replicator = TestReplicator({})
self.assertFalse(
replicator._usync_db(0, FakeBroker(), fake_http, '12345', '67890'))
def test_stats(self):
# I'm not sure how to test that this logs the right thing,
# but we can at least make sure it gets covered.
replicator = TestReplicator({})
replicator._zero_stats()
replicator._report_stats()
def test_replicate_object(self):
db_replicator.ring = FakeRingWithNodes()
replicator = TestReplicator({})
replicator.delete_db = self.stub_delete_db
replicator._replicate_object('0', '/path/to/file', 'node_id')
self.assertEquals([], self.delete_db_calls)
def test_replicate_object_quarantine(self):
replicator = TestReplicator({})
self._patch(patch.object, replicator.brokerclass, 'db_file',
'/a/b/c/d/e/hey')
self._patch(patch.object, replicator.brokerclass,
'get_repl_missing_table', True)
def mock_renamer(was, new, cause_colision=False):
if cause_colision and '-' not in new:
raise OSError(errno.EEXIST, "File already exists")
self.assertEquals('/a/b/c/d/e', was)
if '-' in new:
self.assert_(
new.startswith('/a/quarantined/containers/e-'))
else:
self.assertEquals('/a/quarantined/containers/e', new)
def mock_renamer_error(was, new):
return mock_renamer(was, new, cause_colision=True)
with patch.object(db_replicator, 'renamer', mock_renamer):
replicator._replicate_object('0', 'file', 'node_id')
# try the double quarantine
with patch.object(db_replicator, 'renamer', mock_renamer_error):
replicator._replicate_object('0', 'file', 'node_id')
def test_replicate_object_delete_because_deleted(self):
replicator = TestReplicator({})
try:
replicator.delete_db = self.stub_delete_db
replicator.brokerclass.stub_replication_info = {
'delete_timestamp': 2, 'put_timestamp': 1, 'count': 0}
replicator._replicate_object('0', '/path/to/file', 'node_id')
finally:
replicator.brokerclass.stub_replication_info = None
self.assertEquals(['/path/to/file'], self.delete_db_calls)
def test_replicate_object_delete_because_not_shouldbehere(self):
replicator = TestReplicator({})
replicator.delete_db = self.stub_delete_db
replicator._replicate_object('0', '/path/to/file', 'node_id')
self.assertEquals(['/path/to/file'], self.delete_db_calls)
def test_replicate_account_out_of_place(self):
replicator = TestReplicator({})
replicator.ring = FakeRingWithNodes().Ring('path')
replicator.brokerclass = FakeAccountBroker
replicator._repl_to_node = lambda *args: True
replicator.delete_db = self.stub_delete_db
replicator.logger = FakeLogger()
# Correct node_id, wrong part
part = replicator.ring.get_part(TEST_ACCOUNT_NAME) + 1
node_id = replicator.ring.get_part_nodes(part)[0]['id']
replicator._replicate_object(str(part), '/path/to/file', node_id)
self.assertEqual(['/path/to/file'], self.delete_db_calls)
self.assertEqual(
replicator.logger.log_dict['error'],
[(('Found /path/to/file for /a%20c%20t when it should be on '
'partition 0; will replicate out and remove.',), {})])
def test_replicate_container_out_of_place(self):
replicator = TestReplicator({})
replicator.ring = FakeRingWithNodes().Ring('path')
replicator._repl_to_node = lambda *args: True
replicator.delete_db = self.stub_delete_db
replicator.logger = FakeLogger()
# Correct node_id, wrong part
part = replicator.ring.get_part(
TEST_ACCOUNT_NAME, TEST_CONTAINER_NAME) + 1
node_id = replicator.ring.get_part_nodes(part)[0]['id']
replicator._replicate_object(str(part), '/path/to/file', node_id)
self.assertEqual(['/path/to/file'], self.delete_db_calls)
self.assertEqual(
replicator.logger.log_dict['error'],
[(('Found /path/to/file for /a%20c%20t/c%20o%20n when it should '
'be on partition 0; will replicate out and remove.',), {})])
def test_delete_db(self):
db_replicator.lock_parent_directory = lock_parent_directory
replicator = TestReplicator({})
replicator._zero_stats()
replicator.extract_device = lambda _: 'some_device'
replicator.logger = FakeLogger()
temp_dir = mkdtemp()
try:
temp_suf_dir = os.path.join(temp_dir, '16e')
os.mkdir(temp_suf_dir)
temp_hash_dir = os.path.join(temp_suf_dir,
'166e33924a08ede4204871468c11e16e')
os.mkdir(temp_hash_dir)
temp_file = NamedTemporaryFile(dir=temp_hash_dir, delete=False)
temp_hash_dir2 = os.path.join(temp_suf_dir,
'266e33924a08ede4204871468c11e16e')
os.mkdir(temp_hash_dir2)
temp_file2 = NamedTemporaryFile(dir=temp_hash_dir2, delete=False)
# sanity-checks
self.assertTrue(os.path.exists(temp_dir))
self.assertTrue(os.path.exists(temp_suf_dir))
self.assertTrue(os.path.exists(temp_hash_dir))
self.assertTrue(os.path.exists(temp_file.name))
self.assertTrue(os.path.exists(temp_hash_dir2))
self.assertTrue(os.path.exists(temp_file2.name))
self.assertEqual(0, replicator.stats['remove'])
replicator.delete_db(temp_file.name)
self.assertTrue(os.path.exists(temp_dir))
self.assertTrue(os.path.exists(temp_suf_dir))
self.assertFalse(os.path.exists(temp_hash_dir))
self.assertFalse(os.path.exists(temp_file.name))
self.assertTrue(os.path.exists(temp_hash_dir2))
self.assertTrue(os.path.exists(temp_file2.name))
self.assertEqual([(('removes.some_device',), {})],
replicator.logger.log_dict['increment'])
self.assertEqual(1, replicator.stats['remove'])
replicator.delete_db(temp_file2.name)
self.assertTrue(os.path.exists(temp_dir))
self.assertFalse(os.path.exists(temp_suf_dir))
self.assertFalse(os.path.exists(temp_hash_dir))
self.assertFalse(os.path.exists(temp_file.name))
self.assertFalse(os.path.exists(temp_hash_dir2))
self.assertFalse(os.path.exists(temp_file2.name))
self.assertEqual([(('removes.some_device',), {})] * 2,
replicator.logger.log_dict['increment'])
self.assertEqual(2, replicator.stats['remove'])
finally:
rmtree(temp_dir)
def test_extract_device(self):
replicator = TestReplicator({'devices': '/some/root'})
self.assertEqual('some_device', replicator.extract_device(
'/some/root/some_device/deeper/and/deeper'))
self.assertEqual('UNKNOWN', replicator.extract_device(
'/some/foo/some_device/deeper/and/deeper'))
# def test_dispatch(self):
# rpc = db_replicator.ReplicatorRpc('/', '/', FakeBroker, False)
# no_op = lambda *args, **kwargs: True
# self.assertEquals(rpc.dispatch(('drv', 'part', 'hash'), ('op',)
# ).status_int, 400)
# rpc.mount_check = True
# self.assertEquals(rpc.dispatch(('drv', 'part', 'hash'), ['op',]
# ).status_int, 507)
# rpc.mount_check = False
# rpc.rsync_then_merge = lambda drive, db_file,
# args: self.assertEquals(args, ['test1'])
# rpc.complete_rsync = lambda drive, db_file,
# args: self.assertEquals(args, ['test2'])
# rpc.dispatch(('drv', 'part', 'hash'), ['rsync_then_merge','test1'])
# rpc.dispatch(('drv', 'part', 'hash'), ['complete_rsync','test2'])
# rpc.dispatch(('drv', 'part', 'hash'), ['other_op',])
def test_dispatch_no_arg_pop(self):
rpc = db_replicator.ReplicatorRpc('/', '/', FakeBroker, False)
response = rpc.dispatch(('a',), 'arg')
self.assertEquals('Invalid object type', response.body)
self.assertEquals(400, response.status_int)
def test_dispatch_drive_not_mounted(self):
rpc = db_replicator.ReplicatorRpc('/', '/', FakeBroker, True)
def mock_ismount(path):
self.assertEquals('/drive', path)
return False
self._patch(patch.object, db_replicator, 'ismount', mock_ismount)
response = rpc.dispatch(('drive', 'part', 'hash'), ['method'])
self.assertEquals('507 drive is not mounted', response.status)
self.assertEquals(507, response.status_int)
def test_dispatch_unexpected_operation_db_does_not_exist(self):
rpc = db_replicator.ReplicatorRpc('/', '/', FakeBroker, False)
def mock_mkdirs(path):
self.assertEquals('/drive/tmp', path)
self._patch(patch.object, db_replicator, 'mkdirs', mock_mkdirs)
with patch('swift.common.db_replicator.os',
new=mock.MagicMock(wraps=os)) as mock_os:
mock_os.path.exists.return_value = False
response = rpc.dispatch(('drive', 'part', 'hash'), ['unexpected'])
self.assertEquals('404 Not Found', response.status)
self.assertEquals(404, response.status_int)
def test_dispatch_operation_unexpected(self):
rpc = db_replicator.ReplicatorRpc('/', '/', FakeBroker, False)
self._patch(patch.object, db_replicator, 'mkdirs', lambda *args: True)
def unexpected_method(broker, args):
self.assertEquals(FakeBroker, broker.__class__)
self.assertEqual(['arg1', 'arg2'], args)
return 'unexpected-called'
rpc.unexpected = unexpected_method
with patch('swift.common.db_replicator.os',
new=mock.MagicMock(wraps=os)) as mock_os:
mock_os.path.exists.return_value = True
response = rpc.dispatch(('drive', 'part', 'hash'),
['unexpected', 'arg1', 'arg2'])
mock_os.path.exists.assert_called_with('/part/ash/hash/hash.db')
self.assertEquals('unexpected-called', response)
def test_dispatch_operation_rsync_then_merge(self):
rpc = db_replicator.ReplicatorRpc('/', '/', FakeBroker, False)
self._patch(patch.object, db_replicator, 'renamer', lambda *args: True)
with patch('swift.common.db_replicator.os',
new=mock.MagicMock(wraps=os)) as mock_os:
mock_os.path.exists.return_value = True
response = rpc.dispatch(('drive', 'part', 'hash'),
['rsync_then_merge', 'arg1', 'arg2'])
expected_calls = [call('/part/ash/hash/hash.db'),
call('/drive/tmp/arg1')]
self.assertEquals(mock_os.path.exists.call_args_list,
expected_calls)
self.assertEquals('204 No Content', response.status)
self.assertEquals(204, response.status_int)
def test_dispatch_operation_complete_rsync(self):
rpc = db_replicator.ReplicatorRpc('/', '/', FakeBroker, False)
self._patch(patch.object, db_replicator, 'renamer', lambda *args: True)
with patch('swift.common.db_replicator.os', new=mock.MagicMock(
wraps=os)) as mock_os:
mock_os.path.exists.side_effect = [False, True]
response = rpc.dispatch(('drive', 'part', 'hash'),
['complete_rsync', 'arg1', 'arg2'])
expected_calls = [call('/part/ash/hash/hash.db'),
call('/drive/tmp/arg1')]
self.assertEquals(mock_os.path.exists.call_args_list,
expected_calls)
self.assertEquals('204 No Content', response.status)
self.assertEquals(204, response.status_int)
def test_rsync_then_merge_db_does_not_exist(self):
rpc = db_replicator.ReplicatorRpc('/', '/', FakeBroker, False)
with patch('swift.common.db_replicator.os',
new=mock.MagicMock(wraps=os)) as mock_os:
mock_os.path.exists.return_value = False
response = rpc.rsync_then_merge('drive', '/data/db.db',
('arg1', 'arg2'))
mock_os.path.exists.assert_called_with('/data/db.db')
self.assertEquals('404 Not Found', response.status)
self.assertEquals(404, response.status_int)
def test_rsync_then_merge_old_does_not_exist(self):
rpc = db_replicator.ReplicatorRpc('/', '/', FakeBroker, False)
with patch('swift.common.db_replicator.os',
new=mock.MagicMock(wraps=os)) as mock_os:
mock_os.path.exists.side_effect = [True, False]
response = rpc.rsync_then_merge('drive', '/data/db.db',
('arg1', 'arg2'))
expected_calls = [call('/data/db.db'), call('/drive/tmp/arg1')]
self.assertEquals(mock_os.path.exists.call_args_list,
expected_calls)
self.assertEquals('404 Not Found', response.status)
self.assertEquals(404, response.status_int)
def test_rsync_then_merge_with_objects(self):
rpc = db_replicator.ReplicatorRpc('/', '/', FakeBroker, False)
def mock_renamer(old, new):
self.assertEquals('/drive/tmp/arg1', old)
self.assertEquals('/data/db.db', new)
self._patch(patch.object, db_replicator, 'renamer', mock_renamer)
with patch('swift.common.db_replicator.os',
new=mock.MagicMock(wraps=os)) as mock_os:
mock_os.path.exists.return_value = True
response = rpc.rsync_then_merge('drive', '/data/db.db',
['arg1', 'arg2'])
self.assertEquals('204 No Content', response.status)
self.assertEquals(204, response.status_int)
def test_complete_rsync_db_does_not_exist(self):
rpc = db_replicator.ReplicatorRpc('/', '/', FakeBroker, False)
with patch('swift.common.db_replicator.os',
new=mock.MagicMock(wraps=os)) as mock_os:
mock_os.path.exists.return_value = True
response = rpc.complete_rsync('drive', '/data/db.db',
['arg1', 'arg2'])
mock_os.path.exists.assert_called_with('/data/db.db')
self.assertEquals('404 Not Found', response.status)
self.assertEquals(404, response.status_int)
def test_complete_rsync_old_file_does_not_exist(self):
rpc = db_replicator.ReplicatorRpc('/', '/', FakeBroker, False)
with patch('swift.common.db_replicator.os',
new=mock.MagicMock(wraps=os)) as mock_os:
mock_os.path.exists.return_value = False
response = rpc.complete_rsync('drive', '/data/db.db',
['arg1', 'arg2'])
expected_calls = [call('/data/db.db'), call('/drive/tmp/arg1')]
self.assertEquals(expected_calls,
mock_os.path.exists.call_args_list)
self.assertEquals('404 Not Found', response.status)
self.assertEquals(404, response.status_int)
def test_complete_rsync_rename(self):
rpc = db_replicator.ReplicatorRpc('/', '/', FakeBroker, False)
def mock_exists(path):
if path == '/data/db.db':
return False
self.assertEquals('/drive/tmp/arg1', path)
return True
def mock_renamer(old, new):
self.assertEquals('/drive/tmp/arg1', old)
self.assertEquals('/data/db.db', new)
self._patch(patch.object, db_replicator, 'renamer', mock_renamer)
with patch('swift.common.db_replicator.os',
new=mock.MagicMock(wraps=os)) as mock_os:
mock_os.path.exists.side_effect = [False, True]
response = rpc.complete_rsync('drive', '/data/db.db',
['arg1', 'arg2'])
self.assertEquals('204 No Content', response.status)
self.assertEquals(204, response.status_int)
def test_replicator_sync_with_broker_replication_missing_table(self):
rpc = db_replicator.ReplicatorRpc('/', '/', FakeBroker, False)
broker = FakeBroker()
broker.get_repl_missing_table = True
def mock_quarantine_db(object_file, server_type):
self.assertEquals(broker.db_file, object_file)
self.assertEquals(broker.db_type, server_type)
self._patch(patch.object, db_replicator, 'quarantine_db',
mock_quarantine_db)
response = rpc.sync(broker, ('remote_sync', 'hash_', 'id_',
'created_at', 'put_timestamp',
'delete_timestamp', 'metadata'))
self.assertEquals('404 Not Found', response.status)
self.assertEquals(404, response.status_int)
def test_replicator_sync(self):
rpc = db_replicator.ReplicatorRpc('/', '/', FakeBroker, False)
broker = FakeBroker()
response = rpc.sync(broker, (broker.get_sync() + 1, 12345, 'id_',
'created_at', 'put_timestamp',
'delete_timestamp',
'{"meta1": "data1", "meta2": "data2"}'))
self.assertEquals({'meta1': 'data1', 'meta2': 'data2'},
broker.metadata)
self.assertEquals('created_at', broker.created_at)
self.assertEquals('put_timestamp', broker.put_timestamp)
self.assertEquals('delete_timestamp', broker.delete_timestamp)
self.assertEquals('200 OK', response.status)
self.assertEquals(200, response.status_int)
def test_rsync_then_merge(self):
rpc = db_replicator.ReplicatorRpc('/', '/', FakeBroker, False)
rpc.rsync_then_merge('sda1', '/srv/swift/blah', ('a', 'b'))
def test_merge_items(self):
rpc = db_replicator.ReplicatorRpc('/', '/', FakeBroker, False)
fake_broker = FakeBroker()
args = ('a', 'b')
rpc.merge_items(fake_broker, args)
self.assertEquals(fake_broker.args, args)
def test_merge_syncs(self):
rpc = db_replicator.ReplicatorRpc('/', '/', FakeBroker, False)
fake_broker = FakeBroker()
args = ('a', 'b')
rpc.merge_syncs(fake_broker, args)
self.assertEquals(fake_broker.args, (args[0],))
def test_complete_rsync_with_bad_input(self):
drive = '/some/root'
db_file = __file__
args = ['old_file']
rpc = db_replicator.ReplicatorRpc('/', '/', FakeBroker, False)
resp = rpc.complete_rsync(drive, db_file, args)
self.assertTrue(isinstance(resp, HTTPException))
self.assertEquals(404, resp.status_int)
resp = rpc.complete_rsync(drive, 'new_db_file', args)
self.assertTrue(isinstance(resp, HTTPException))
self.assertEquals(404, resp.status_int)
def test_complete_rsync(self):
drive = mkdtemp()
args = ['old_file']
rpc = db_replicator.ReplicatorRpc('/', '/', FakeBroker, False)
os.mkdir('%s/tmp' % drive)
old_file = '%s/tmp/old_file' % drive
new_file = '%s/new_db_file' % drive
try:
fp = open(old_file, 'w')
fp.write('void')
fp.close
resp = rpc.complete_rsync(drive, new_file, args)
self.assertEquals(204, resp.status_int)
finally:
rmtree(drive)
def test_roundrobin_datadirs(self):
listdir_calls = []
isdir_calls = []
exists_calls = []
shuffle_calls = []
def _listdir(path):
listdir_calls.append(path)
if not path.startswith('/srv/node/sda/containers') and \
not path.startswith('/srv/node/sdb/containers'):
return []
path = path[len('/srv/node/sdx/containers'):]
if path == '':
return ['123', '456', '789'] # 456 will pretend to be a file
elif path == '/123':
return ['abc', 'def.db'] # def.db will pretend to be a file
elif path == '/123/abc':
# 11111111111111111111111111111abc will pretend to be a file
return ['00000000000000000000000000000abc',
'11111111111111111111111111111abc']
elif path == '/123/abc/00000000000000000000000000000abc':
return ['00000000000000000000000000000abc.db',
# This other.db isn't in the right place, so should be
# ignored later.
'000000000000000000000000000other.db',
'weird1'] # weird1 will pretend to be a dir, if asked
elif path == '/789':
return ['ghi', 'jkl'] # jkl will pretend to be a file
elif path == '/789/ghi':
# 33333333333333333333333333333ghi will pretend to be a file
return ['22222222222222222222222222222ghi',
'33333333333333333333333333333ghi']
elif path == '/789/ghi/22222222222222222222222222222ghi':
return ['22222222222222222222222222222ghi.db',
'weird2'] # weird2 will pretend to be a dir, if asked
return []
def _isdir(path):
isdir_calls.append(path)
if not path.startswith('/srv/node/sda/containers') and \
not path.startswith('/srv/node/sdb/containers'):
return False
path = path[len('/srv/node/sdx/containers'):]
if path in ('/123', '/123/abc',
'/123/abc/00000000000000000000000000000abc',
'/123/abc/00000000000000000000000000000abc/weird1',
'/789', '/789/ghi',
'/789/ghi/22222222222222222222222222222ghi',
'/789/ghi/22222222222222222222222222222ghi/weird2'):
return True
return False
def _exists(arg):
exists_calls.append(arg)
return True
def _shuffle(arg):
shuffle_calls.append(arg)
orig_listdir = db_replicator.os.listdir
orig_isdir = db_replicator.os.path.isdir
orig_exists = db_replicator.os.path.exists
orig_shuffle = db_replicator.random.shuffle
try:
db_replicator.os.listdir = _listdir
db_replicator.os.path.isdir = _isdir
db_replicator.os.path.exists = _exists
db_replicator.random.shuffle = _shuffle
datadirs = [('/srv/node/sda/containers', 1),
('/srv/node/sdb/containers', 2)]
results = list(db_replicator.roundrobin_datadirs(datadirs))
# The results show that the .db files are returned, the devices
# interleaved.
self.assertEquals(results, [
('123', '/srv/node/sda/containers/123/abc/'
'00000000000000000000000000000abc/'
'00000000000000000000000000000abc.db', 1),
('123', '/srv/node/sdb/containers/123/abc/'
'00000000000000000000000000000abc/'
'00000000000000000000000000000abc.db', 2),
('789', '/srv/node/sda/containers/789/ghi/'
'22222222222222222222222222222ghi/'
'22222222222222222222222222222ghi.db', 1),
('789', '/srv/node/sdb/containers/789/ghi/'
'22222222222222222222222222222ghi/'
'22222222222222222222222222222ghi.db', 2)])
# The listdir calls show that we only listdir the dirs
self.assertEquals(listdir_calls, [
'/srv/node/sda/containers',
'/srv/node/sda/containers/123',
'/srv/node/sda/containers/123/abc',
'/srv/node/sdb/containers',
'/srv/node/sdb/containers/123',
'/srv/node/sdb/containers/123/abc',
'/srv/node/sda/containers/789',
'/srv/node/sda/containers/789/ghi',
'/srv/node/sdb/containers/789',
'/srv/node/sdb/containers/789/ghi'])
# The isdir calls show that we did ask about the things pretending
# to be files at various levels.
self.assertEquals(isdir_calls, [
'/srv/node/sda/containers/123',
'/srv/node/sda/containers/123/abc',
('/srv/node/sda/containers/123/abc/'
'00000000000000000000000000000abc'),
'/srv/node/sdb/containers/123',
'/srv/node/sdb/containers/123/abc',
('/srv/node/sdb/containers/123/abc/'
'00000000000000000000000000000abc'),
('/srv/node/sda/containers/123/abc/'
'11111111111111111111111111111abc'),
'/srv/node/sda/containers/123/def.db',
'/srv/node/sda/containers/456',
'/srv/node/sda/containers/789',
'/srv/node/sda/containers/789/ghi',
('/srv/node/sda/containers/789/ghi/'
'22222222222222222222222222222ghi'),
('/srv/node/sdb/containers/123/abc/'
'11111111111111111111111111111abc'),
'/srv/node/sdb/containers/123/def.db',
'/srv/node/sdb/containers/456',
'/srv/node/sdb/containers/789',
'/srv/node/sdb/containers/789/ghi',
('/srv/node/sdb/containers/789/ghi/'
'22222222222222222222222222222ghi'),
('/srv/node/sda/containers/789/ghi/'
'33333333333333333333333333333ghi'),
'/srv/node/sda/containers/789/jkl',
('/srv/node/sdb/containers/789/ghi/'
'33333333333333333333333333333ghi'),
'/srv/node/sdb/containers/789/jkl'])
# The exists calls are the .db files we looked for as we walked the
# structure.
self.assertEquals(exists_calls, [
('/srv/node/sda/containers/123/abc/'
'00000000000000000000000000000abc/'
'00000000000000000000000000000abc.db'),
('/srv/node/sdb/containers/123/abc/'
'00000000000000000000000000000abc/'
'00000000000000000000000000000abc.db'),
('/srv/node/sda/containers/789/ghi/'
'22222222222222222222222222222ghi/'
'22222222222222222222222222222ghi.db'),
('/srv/node/sdb/containers/789/ghi/'
'22222222222222222222222222222ghi/'
'22222222222222222222222222222ghi.db')])
# Shows that we called shuffle twice, once for each device.
self.assertEquals(
shuffle_calls, [['123', '456', '789'], ['123', '456', '789']])
finally:
db_replicator.os.listdir = orig_listdir
db_replicator.os.path.isdir = orig_isdir
db_replicator.os.path.exists = orig_exists
db_replicator.random.shuffle = orig_shuffle
@mock.patch("swift.common.db_replicator.ReplConnection", mock.Mock())
def test_http_connect(self):
node = "node"
partition = "partition"
db_file = __file__
replicator = TestReplicator({})
replicator._http_connect(node, partition, db_file)
db_replicator.ReplConnection.assert_has_calls(
mock.call(node, partition,
os.path.basename(db_file).split('.', 1)[0],
replicator.logger))
class TestReplToNode(unittest.TestCase):
def setUp(self):
db_replicator.ring = FakeRing()
self.delete_db_calls = []
self.broker = FakeBroker()
self.replicator = TestReplicator({})
self.fake_node = {'ip': '127.0.0.1', 'device': 'sda1', 'port': 1000}
self.fake_info = {'id': 'a', 'point': -1, 'max_row': 10, 'hash': 'b',
'created_at': 100, 'put_timestamp': 0,
'delete_timestamp': 0, 'count': 0,
'metadata': {
'Test': ('Value', normalize_timestamp(1))}}
self.replicator.logger = mock.Mock()
self.replicator._rsync_db = mock.Mock(return_value=True)
self.replicator._usync_db = mock.Mock(return_value=True)
self.http = ReplHttp('{"id": 3, "point": -1}')
self.replicator._http_connect = lambda *args: self.http
def test_repl_to_node_usync_success(self):
rinfo = {"id": 3, "point": -1, "max_row": 5, "hash": "c"}
self.http = ReplHttp(simplejson.dumps(rinfo))
local_sync = self.broker.get_sync()
self.assertEquals(self.replicator._repl_to_node(
self.fake_node, self.broker, '0', self.fake_info), True)
self.replicator._usync_db.assert_has_calls([
mock.call(max(rinfo['point'], local_sync), self.broker,
self.http, rinfo['id'], self.fake_info['id'])
])
def test_repl_to_node_rsync_success(self):
rinfo = {"id": 3, "point": -1, "max_row": 4, "hash": "c"}
self.http = ReplHttp(simplejson.dumps(rinfo))
self.broker.get_sync()
self.assertEquals(self.replicator._repl_to_node(
self.fake_node, self.broker, '0', self.fake_info), True)
self.replicator.logger.increment.assert_has_calls([
mock.call.increment('remote_merges')
])
self.replicator._rsync_db.assert_has_calls([
mock.call(self.broker, self.fake_node, self.http,
self.fake_info['id'],
replicate_method='rsync_then_merge',
replicate_timeout=(self.fake_info['count'] / 2000))
])
def test_repl_to_node_already_in_sync(self):
rinfo = {"id": 3, "point": -1, "max_row": 10, "hash": "b"}
self.http = ReplHttp(simplejson.dumps(rinfo))
self.broker.get_sync()
self.assertEquals(self.replicator._repl_to_node(
self.fake_node, self.broker, '0', self.fake_info), True)
self.assertEquals(self.replicator._rsync_db.call_count, 0)
self.assertEquals(self.replicator._usync_db.call_count, 0)
def test_repl_to_node_not_found(self):
self.http = ReplHttp('{"id": 3, "point": -1}', set_status=404)
self.assertEquals(self.replicator._repl_to_node(
self.fake_node, self.broker, '0', self.fake_info), True)
self.replicator.logger.increment.assert_has_calls([
mock.call.increment('rsyncs')
])
self.replicator._rsync_db.assert_has_calls([
mock.call(self.broker, self.fake_node, self.http,
self.fake_info['id'])
])
def test_repl_to_node_drive_not_mounted(self):
self.http = ReplHttp('{"id": 3, "point": -1}', set_status=507)
self.assertRaises(DriveNotMounted, self.replicator._repl_to_node,
self.fake_node, FakeBroker(), '0', self.fake_info)
def test_repl_to_node_300_status(self):
self.http = ReplHttp('{"id": 3, "point": -1}', set_status=300)
self.assertEquals(self.replicator._repl_to_node(
self.fake_node, FakeBroker(), '0', self.fake_info), None)
def test_repl_to_node_http_connect_fails(self):
self.replicator._http_connect = lambda *args: None
self.assertEquals(self.replicator._repl_to_node(
self.fake_node, FakeBroker(), '0', self.fake_info), False)
def test_repl_to_node_not_response(self):
self.http = mock.Mock(replicate=mock.Mock(return_value=None))
self.assertEquals(self.replicator._repl_to_node(
self.fake_node, FakeBroker(), '0', self.fake_info), False)
if __name__ == '__main__':
unittest.main()
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