本文整理汇总了Python中swift.common.db.DatabaseBroker类的典型用法代码示例。如果您正苦于以下问题：Python DatabaseBroker类的具体用法？Python DatabaseBroker怎么用？Python DatabaseBroker使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。
在下文中一共展示了DatabaseBroker类的11个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: test_DB_PREALLOCATION_setting
def test_DB_PREALLOCATION_setting(self):
u = uuid4().hex
b = DatabaseBroker(u)
swift.common.db.DB_PREALLOCATION = False
b._preallocate()
swift.common.db.DB_PREALLOCATION = True
self.assertRaises(OSError, b._preallocate)示例2: test_disk_preallocate
def test_disk_preallocate(self):
test_size = [-1]
def fallocate_stub(fd, size):
test_size[0] = size
with patch('swift.common.db.fallocate', fallocate_stub):
db_file = os.path.join(self.testdir, 'pre.db')
# Write 1 byte and hope that the fs will allocate less than 1 MB.
f = open(db_file, "w")
f.write('@')
f.close()
b = DatabaseBroker(db_file)
b._preallocate()
# We only wrote 1 byte, so we should end with the 1st step or 1 MB.
self.assertEquals(test_size[0], 1024 * 1024)示例3: get_replication_info_tester
def get_replication_info_tester(self, metadata=False):
broker = DatabaseBroker(':memory:', account='a')
broker.db_type = 'test'
broker.db_contains_type = 'test'
broker_creation = normalize_timestamp(1)
broker_uuid = str(uuid4())
broker_metadata = metadata and simplejson.dumps(
{'Test': ('Value', normalize_timestamp(1))}) or ''
def _initialize(conn, put_timestamp):
if put_timestamp is None:
put_timestamp = normalize_timestamp(0)
conn.executescript('''
CREATE TABLE test (
ROWID INTEGER PRIMARY KEY AUTOINCREMENT,
name TEXT UNIQUE,
created_at TEXT
);
CREATE TRIGGER test_insert AFTER INSERT ON test
BEGIN
UPDATE test_stat
SET test_count = test_count + 1,
hash = chexor(hash, new.name, new.created_at);
END;
CREATE TRIGGER test_update BEFORE UPDATE ON test
BEGIN
SELECT RAISE(FAIL,
'UPDATE not allowed; DELETE and INSERT');
END;
CREATE TRIGGER test_delete AFTER DELETE ON test
BEGIN
UPDATE test_stat
SET test_count = test_count - 1,
hash = chexor(hash, old.name, old.created_at);
END;
CREATE TABLE test_stat (
account TEXT,
created_at TEXT,
put_timestamp TEXT DEFAULT '0',
delete_timestamp TEXT DEFAULT '0',
test_count INTEGER,
hash TEXT default '00000000000000000000000000000000',
id TEXT
%s
);
INSERT INTO test_stat (test_count) VALUES (0);
''' % (metadata and ", metadata TEXT DEFAULT ''" or ""))
conn.execute('''
UPDATE test_stat
SET account = ?, created_at = ?, id = ?, put_timestamp = ?
''', (broker.account, broker_creation, broker_uuid, put_timestamp))
if metadata:
conn.execute('UPDATE test_stat SET metadata = ?',
(broker_metadata,))
conn.commit()
broker._initialize = _initialize
put_timestamp = normalize_timestamp(2)
broker.initialize(put_timestamp)
info = broker.get_replication_info()
self.assertEquals(info, {
'count': 0,
'hash': '00000000000000000000000000000000',
'created_at': broker_creation, 'put_timestamp': put_timestamp,
'delete_timestamp': '0', 'max_row': -1, 'id': broker_uuid,
'metadata': broker_metadata})
insert_timestamp = normalize_timestamp(3)
with broker.get() as conn:
conn.execute('''
INSERT INTO test (name, created_at) VALUES ('test', ?)
''', (insert_timestamp,))
conn.commit()
info = broker.get_replication_info()
self.assertEquals(info, {
'count': 1,
'hash': 'bdc4c93f574b0d8c2911a27ce9dd38ba',
'created_at': broker_creation, 'put_timestamp': put_timestamp,
'delete_timestamp': '0', 'max_row': 1, 'id': broker_uuid,
'metadata': broker_metadata})
with broker.get() as conn:
conn.execute('DELETE FROM test')
conn.commit()
info = broker.get_replication_info()
self.assertEquals(info, {
'count': 0,
'hash': '00000000000000000000000000000000',
'created_at': broker_creation, 'put_timestamp': put_timestamp,
'delete_timestamp': '0', 'max_row': 1, 'id': broker_uuid,
'metadata': broker_metadata})
return broker示例4: test_merge_syncs
def test_merge_syncs(self):
broker = DatabaseBroker(':memory:')
def stub(*args, **kwargs):
pass
broker._initialize = stub
broker.initialize(normalize_timestamp('1'))
uuid2 = str(uuid4())
broker.merge_syncs([{'sync_point': 1, 'remote_id': uuid2}])
self.assertEquals(broker.get_sync(uuid2), 1)
uuid3 = str(uuid4())
broker.merge_syncs([{'sync_point': 2, 'remote_id': uuid3}])
self.assertEquals(broker.get_sync(uuid2), 1)
self.assertEquals(broker.get_sync(uuid3), 2)
self.assertEquals(broker.get_sync(uuid2, incoming=False), -1)
self.assertEquals(broker.get_sync(uuid3, incoming=False), -1)
broker.merge_syncs([{'sync_point': 3, 'remote_id': uuid2},
{'sync_point': 4, 'remote_id': uuid3}],
incoming=False)
self.assertEquals(broker.get_sync(uuid2, incoming=False), 3)
self.assertEquals(broker.get_sync(uuid3, incoming=False), 4)
self.assertEquals(broker.get_sync(uuid2), 1)
self.assertEquals(broker.get_sync(uuid3), 2)
broker.merge_syncs([{'sync_point': 5, 'remote_id': uuid2}])
self.assertEquals(broker.get_sync(uuid2), 5)示例5: test_get_sync
def test_get_sync(self):
broker = DatabaseBroker(':memory:')
broker.db_type = 'test'
broker.db_contains_type = 'test'
uuid1 = str(uuid4())
def _initialize(conn, timestamp):
conn.execute('CREATE TABLE test (one TEXT)')
conn.execute('CREATE TABLE test_stat (id TEXT)')
conn.execute('INSERT INTO test_stat (id) VALUES (?)', (uuid1,))
conn.execute('INSERT INTO test (one) VALUES ("1")')
conn.commit()
pass
broker._initialize = _initialize
broker.initialize(normalize_timestamp('1'))
uuid2 = str(uuid4())
self.assertEquals(broker.get_sync(uuid2), -1)
broker.newid(uuid2)
self.assertEquals(broker.get_sync(uuid2), 1)
uuid3 = str(uuid4())
self.assertEquals(broker.get_sync(uuid3), -1)
with broker.get() as conn:
conn.execute('INSERT INTO test (one) VALUES ("2")')
conn.commit()
broker.newid(uuid3)
self.assertEquals(broker.get_sync(uuid2), 1)
self.assertEquals(broker.get_sync(uuid3), 2)
self.assertEquals(broker.get_sync(uuid2, incoming=False), -1)
self.assertEquals(broker.get_sync(uuid3, incoming=False), -1)
broker.merge_syncs([{'sync_point': 1, 'remote_id': uuid2}],
incoming=False)
self.assertEquals(broker.get_sync(uuid2), 1)
self.assertEquals(broker.get_sync(uuid3), 2)
self.assertEquals(broker.get_sync(uuid2, incoming=False), 1)
self.assertEquals(broker.get_sync(uuid3, incoming=False), -1)
broker.merge_syncs([{'sync_point': 2, 'remote_id': uuid3}],
incoming=False)
self.assertEquals(broker.get_sync(uuid2, incoming=False), 1)
self.assertEquals(broker.get_sync(uuid3, incoming=False), 2)示例6: test_get_items_since
def test_get_items_since(self):
broker = DatabaseBroker(':memory:')
broker.db_type = 'test'
broker.db_contains_type = 'test'
def _initialize(conn, timestamp):
conn.execute('CREATE TABLE test (one TEXT)')
conn.execute('INSERT INTO test (one) VALUES ("1")')
conn.execute('INSERT INTO test (one) VALUES ("2")')
conn.execute('INSERT INTO test (one) VALUES ("3")')
conn.commit()
broker._initialize = _initialize
broker.initialize(normalize_timestamp('1'))
self.assertEquals(broker.get_items_since(-1, 10),
[{'one': '1'}, {'one': '2'}, {'one': '3'}])
self.assertEquals(broker.get_items_since(-1, 2),
[{'one': '1'}, {'one': '2'}])
self.assertEquals(broker.get_items_since(1, 2),
[{'one': '2'}, {'one': '3'}])
self.assertEquals(broker.get_items_since(3, 2), [])
self.assertEquals(broker.get_items_since(999, 2), [])示例7: test_newid
def test_newid(self):
broker = DatabaseBroker(':memory:')
broker.db_type = 'test'
broker.db_contains_type = 'test'
uuid1 = str(uuid4())
def _initialize(conn, timestamp):
conn.execute('CREATE TABLE test (one TEXT)')
conn.execute('CREATE TABLE test_stat (id TEXT)')
conn.execute('INSERT INTO test_stat (id) VALUES (?)', (uuid1,))
conn.commit()
broker._initialize = _initialize
broker.initialize(normalize_timestamp('1'))
uuid2 = str(uuid4())
broker.newid(uuid2)
with broker.get() as conn:
uuids = [r[0] for r in conn.execute('SELECT * FROM test_stat')]
self.assertEquals(len(uuids), 1)
self.assertNotEquals(uuids[0], uuid1)
uuid1 = uuids[0]
points = [(r[0], r[1]) for r in conn.execute(
'SELECT sync_point, '
'remote_id FROM incoming_sync WHERE remote_id = ?', (uuid2,))]
self.assertEquals(len(points), 1)
self.assertEquals(points[0][0], -1)
self.assertEquals(points[0][1], uuid2)
conn.execute('INSERT INTO test (one) VALUES ("1")')
conn.commit()
uuid3 = str(uuid4())
broker.newid(uuid3)
with broker.get() as conn:
uuids = [r[0] for r in conn.execute('SELECT * FROM test_stat')]
self.assertEquals(len(uuids), 1)
self.assertNotEquals(uuids[0], uuid1)
uuid1 = uuids[0]
points = [(r[0], r[1]) for r in conn.execute(
'SELECT sync_point, '
'remote_id FROM incoming_sync WHERE remote_id = ?', (uuid3,))]
self.assertEquals(len(points), 1)
self.assertEquals(points[0][1], uuid3)
broker.newid(uuid2)
with broker.get() as conn:
uuids = [r[0] for r in conn.execute('SELECT * FROM test_stat')]
self.assertEquals(len(uuids), 1)
self.assertNotEquals(uuids[0], uuid1)
points = [(r[0], r[1]) for r in conn.execute(
'SELECT sync_point, '
'remote_id FROM incoming_sync WHERE remote_id = ?', (uuid2,))]
self.assertEquals(len(points), 1)
self.assertEquals(points[0][1], uuid2)示例8: test_lock
def test_lock(self):
broker = DatabaseBroker(os.path.join(self.testdir, '1.db'), timeout=.1)
got_exc = False
try:
with broker.lock():
pass
except Exception:
got_exc = True
self.assert_(got_exc)
def stub(*args, **kwargs):
pass
broker._initialize = stub
broker.initialize(normalize_timestamp('1'))
with broker.lock():
pass
with broker.lock():
pass
broker2 = DatabaseBroker(os.path.join(self.testdir, '1.db'),
timeout=.1)
broker2._initialize = stub
with broker.lock():
got_exc = False
try:
with broker2.lock():
pass
except LockTimeout:
got_exc = True
self.assert_(got_exc)
try:
with broker.lock():
raise Exception('test')
except Exception:
pass
with broker.lock():
pass示例9: test_get
def test_get(self):
broker = DatabaseBroker(':memory:')
got_exc = False
try:
with broker.get() as conn:
conn.execute('SELECT 1')
except Exception:
got_exc = True
broker = DatabaseBroker(os.path.join(self.testdir, '1.db'))
got_exc = False
try:
with broker.get() as conn:
conn.execute('SELECT 1')
except Exception:
got_exc = True
self.assert_(got_exc)
def stub(*args, **kwargs):
pass
broker._initialize = stub
broker.initialize(normalize_timestamp('1'))
with broker.get() as conn:
conn.execute('CREATE TABLE test (one TEXT)')
try:
with broker.get() as conn:
conn.execute('INSERT INTO test (one) VALUES ("1")')
raise Exception('test')
conn.commit()
except Exception:
pass
broker = DatabaseBroker(os.path.join(self.testdir, '1.db'))
with broker.get() as conn:
self.assertEquals(
[r[0] for r in conn.execute('SELECT * FROM test')], [])
with broker.get() as conn:
conn.execute('INSERT INTO test (one) VALUES ("1")')
conn.commit()
broker = DatabaseBroker(os.path.join(self.testdir, '1.db'))
with broker.get() as conn:
self.assertEquals(
[r[0] for r in conn.execute('SELECT * FROM test')], ['1'])
with patch('swift.common.db.renamer', lambda a, b: b):
qpath = os.path.dirname(os.path.dirname(os.path.dirname(
os.path.dirname(self.testdir))))
if qpath:
qpath += '/quarantined/tests/db'
else:
qpath = 'quarantined/tests/db'
# Test malformed database
copy(os.path.join(os.path.dirname(__file__),
'malformed_example.db'),
os.path.join(self.testdir, '1.db'))
broker = DatabaseBroker(os.path.join(self.testdir, '1.db'))
broker.db_type = 'test'
exc = None
try:
with broker.get() as conn:
conn.execute('SELECT * FROM test')
except Exception as err:
exc = err
self.assertEquals(
str(exc),
'Quarantined %s to %s due to malformed database' %
(self.testdir, qpath))
# Test corrupted database
copy(os.path.join(os.path.dirname(__file__),
'corrupted_example.db'),
os.path.join(self.testdir, '1.db'))
broker = DatabaseBroker(os.path.join(self.testdir, '1.db'))
broker.db_type = 'test'
exc = None
try:
with broker.get() as conn:
conn.execute('SELECT * FROM test')
except Exception as err:
exc = err
self.assertEquals(
str(exc),
'Quarantined %s to %s due to corrupted database' %
(self.testdir, qpath))示例10: test_delete_db
def test_delete_db(self):
def init_stub(conn, put_timestamp):
conn.execute('CREATE TABLE test (one TEXT)')
conn.execute('CREATE TABLE test_stat (id TEXT)')
conn.execute('INSERT INTO test_stat (id) VALUES (?)',
(str(uuid4),))
conn.execute('INSERT INTO test (one) VALUES ("1")')
conn.commit()
stub_called = [False]
def delete_stub(*a, **kw):
stub_called[0] = True
broker = DatabaseBroker(':memory:')
broker.db_type = 'test'
broker._initialize = init_stub
# Initializes a good broker for us
broker.initialize(normalize_timestamp('1'))
self.assert_(broker.conn is not None)
broker._delete_db = delete_stub
stub_called[0] = False
broker.delete_db('2')
self.assert_(stub_called[0])
broker = DatabaseBroker(os.path.join(self.testdir, '1.db'))
broker.db_type = 'test'
broker._initialize = init_stub
broker.initialize(normalize_timestamp('1'))
broker._delete_db = delete_stub
stub_called[0] = False
broker.delete_db('2')
self.assert_(stub_called[0])
# ensure that metadata was cleared
m2 = broker.metadata
self.assert_(not any(v[0] for v in m2.itervalues()))
self.assert_(all(v[1] == normalize_timestamp('2')
for v in m2.itervalues()))示例11: test_initialize
def test_initialize(self):
self.assertRaises(AttributeError,
DatabaseBroker(':memory:').initialize,
normalize_timestamp('1'))
stub_dict = {}
def stub(*args, **kwargs):
for key in stub_dict.keys():
del stub_dict[key]
stub_dict['args'] = args
for key, value in kwargs.items():
stub_dict[key] = value
broker = DatabaseBroker(':memory:')
broker._initialize = stub
broker.initialize(normalize_timestamp('1'))
self.assert_(hasattr(stub_dict['args'][0], 'execute'))
self.assertEquals(stub_dict['args'][1], '0000000001.00000')
with broker.get() as conn:
conn.execute('SELECT * FROM outgoing_sync')
conn.execute('SELECT * FROM incoming_sync')
broker = DatabaseBroker(os.path.join(self.testdir, '1.db'))
broker._initialize = stub
broker.initialize(normalize_timestamp('1'))
self.assert_(hasattr(stub_dict['args'][0], 'execute'))
self.assertEquals(stub_dict['args'][1], '0000000001.00000')
with broker.get() as conn:
conn.execute('SELECT * FROM outgoing_sync')
conn.execute('SELECT * FROM incoming_sync')
def my_ismount(*a, **kw):
return True
with patch('os.path.ismount', my_ismount):
broker = DatabaseBroker(os.path.join(self.testdir, '1.db'))
broker._initialize = stub
self.assertRaises(DatabaseAlreadyExists,
broker.initialize, normalize_timestamp('1'))