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test_connection_pool.py
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325 lines (233 loc) · 9.63 KB
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from concurrent.futures import ThreadPoolExecutor
from threading import get_ident
from pytest_mock.plugin import MockerFixture
from sqlmesh.utils.connection_pool import (
SingletonConnectionPool,
ThreadLocalConnectionPool,
ThreadLocalSharedConnectionPool,
)
def test_singleton_connection_pool_get(mocker: MockerFixture):
cursor_mock = mocker.Mock()
connection_mock = mocker.Mock()
connection_mock.cursor.return_value = cursor_mock
connection_factory_mock = mocker.Mock(return_value=connection_mock)
pool = SingletonConnectionPool(connection_factory_mock)
assert pool.get_cursor() == cursor_mock
assert pool.get_cursor() == cursor_mock
assert pool.get() == connection_mock
assert pool.get() == connection_mock
connection_factory_mock.assert_called_once()
connection_mock.cursor.assert_called_once()
def test_singleton_connection_pool_close(mocker: MockerFixture):
cursor_mock = mocker.Mock()
connection_mock = mocker.Mock()
connection_mock.cursor.return_value = cursor_mock
connection_factory_mock = mocker.Mock(return_value=connection_mock)
pool = SingletonConnectionPool(connection_factory_mock)
pool.close()
pool.close_cursor()
pool.close_all()
pool.close_all(exclude_calling_thread=True)
assert pool.get_cursor() == cursor_mock
pool.close_cursor()
assert pool.get_cursor() == cursor_mock
pool.close()
assert pool.get_cursor() == cursor_mock
pool.close_all()
assert pool.get_cursor() == cursor_mock
pool.close_all(exclude_calling_thread=True)
assert connection_mock.close.call_count == 2
assert connection_mock.cursor.call_count == 4
assert cursor_mock.close.call_count == 1
assert connection_factory_mock.call_count == 3
def test_singleton_connection_pool_transaction(mocker: MockerFixture):
cursor_mock = mocker.Mock()
connection_mock = mocker.Mock()
connection_mock.cursor.return_value = cursor_mock
connection_factory_mock = mocker.Mock(return_value=connection_mock)
pool = SingletonConnectionPool(connection_factory_mock)
assert not pool.is_transaction_active
pool.begin()
assert pool.is_transaction_active
pool.commit()
assert not pool.is_transaction_active
pool.begin()
pool.rollback()
assert not pool.is_transaction_active
pool.begin()
pool.close()
assert not pool.is_transaction_active
pool.begin()
pool.close_all()
assert not pool.is_transaction_active
assert cursor_mock.begin.call_count == 4
assert cursor_mock.commit.call_count == 1
assert cursor_mock.rollback.call_count == 1
def test_thread_local_connection_pool(mocker: MockerFixture):
cursor_mock_thread_one = mocker.Mock()
connection_mock_thread_one = mocker.Mock()
connection_mock_thread_one.cursor.return_value = cursor_mock_thread_one
cursor_mock_thread_two = mocker.Mock()
connection_mock_thread_two = mocker.Mock()
connection_mock_thread_two.cursor.return_value = cursor_mock_thread_two
test_thread_id = get_ident()
def connection_factory():
return (
connection_mock_thread_one
if get_ident() == test_thread_id
else connection_mock_thread_two
)
connection_factory_mock = mocker.Mock(side_effect=connection_factory)
pool = ThreadLocalConnectionPool(connection_factory_mock)
def thread():
assert pool.get_cursor() == cursor_mock_thread_two
assert pool.get_cursor() == cursor_mock_thread_two
assert pool.get() == connection_mock_thread_two
assert pool.get() == connection_mock_thread_two
with ThreadPoolExecutor(max_workers=1) as executor:
executor.submit(thread).result()
assert pool.get_cursor() == cursor_mock_thread_one
assert pool.get_cursor() == cursor_mock_thread_one
assert pool.get() == connection_mock_thread_one
assert pool.get() == connection_mock_thread_one
assert len(pool._thread_connections) == 2
assert len(pool._thread_cursors) == 2
pool.close_all(exclude_calling_thread=True)
assert len(pool._thread_connections) == 1
assert len(pool._thread_cursors) == 1
assert test_thread_id in pool._thread_connections
assert test_thread_id in pool._thread_cursors
pool.close_cursor()
pool.close()
assert pool.get_cursor() == cursor_mock_thread_one
pool.close_all()
assert connection_factory_mock.call_count == 3
assert cursor_mock_thread_one.close.call_count == 1
assert connection_mock_thread_one.cursor.call_count == 2
assert connection_mock_thread_one.close.call_count == 2
assert connection_mock_thread_two.cursor.call_count == 1
assert connection_mock_thread_two.close.call_count == 1
def test_thread_local_connection_pool_transaction(mocker: MockerFixture):
cursor_mock_thread_one = mocker.Mock()
connection_mock_thread_one = mocker.Mock()
connection_mock_thread_one.cursor.return_value = cursor_mock_thread_one
cursor_mock_thread_two = mocker.Mock()
connection_mock_thread_two = mocker.Mock()
connection_mock_thread_two.cursor.return_value = cursor_mock_thread_two
test_thread_id = get_ident()
def connection_factory():
return (
connection_mock_thread_one
if get_ident() == test_thread_id
else connection_mock_thread_two
)
connection_factory_mock = mocker.Mock(side_effect=connection_factory)
pool = ThreadLocalConnectionPool(connection_factory_mock)
def thread():
pool.begin()
assert pool.is_transaction_active
with ThreadPoolExecutor(max_workers=1) as executor:
executor.submit(thread).result()
pool.begin()
assert pool.is_transaction_active
assert len(pool._thread_transactions) == 2
pool.commit()
assert not pool.is_transaction_active
assert len(pool._thread_transactions) == 1
pool.begin()
pool.rollback()
assert not pool.is_transaction_active
assert len(pool._thread_transactions) == 1
pool.begin()
pool.close()
assert not pool.is_transaction_active
assert len(pool._thread_transactions) == 1
pool.close_all()
assert not pool._thread_transactions
assert cursor_mock_thread_one.begin.call_count == 3
assert cursor_mock_thread_one.commit.call_count == 1
assert cursor_mock_thread_one.rollback.call_count == 1
assert cursor_mock_thread_two.begin.call_count == 1
def test_thread_local_connection_pool_attributes(mocker: MockerFixture):
pool = ThreadLocalConnectionPool(connection_factory=lambda: mocker.Mock())
pool.set_attribute("foo", "bar")
current_threadid = get_ident()
def _in_thread(pool: ThreadLocalConnectionPool):
assert get_ident() != current_threadid
pool.set_attribute("foo", "baz")
with ThreadPoolExecutor() as executor:
future = executor.submit(_in_thread, pool)
assert not future.exception()
assert pool.get_all_attributes("foo") == ["bar", "baz"]
assert pool.get_attribute("foo") == "bar"
pool.close_all()
assert pool.get_all_attributes("foo") == []
assert pool.get_attribute("foo") is None
def test_thread_local_shared_connection_pool(mocker: MockerFixture):
cursor_mock_thread_one = mocker.Mock()
cursor_mock_thread_two = mocker.Mock()
connection_mock = mocker.Mock()
connection_mock.cursor.side_effect = [
cursor_mock_thread_one,
cursor_mock_thread_two,
cursor_mock_thread_one,
]
test_thread_id = get_ident()
connection_factory_mock = mocker.Mock(return_value=connection_mock)
pool = ThreadLocalSharedConnectionPool(connection_factory_mock)
assert pool.get_cursor() == cursor_mock_thread_one
assert pool.get_cursor() == cursor_mock_thread_one
assert pool.get() == connection_mock
assert pool.get() == connection_mock
def thread():
assert pool.get_cursor() == cursor_mock_thread_two
assert pool.get_cursor() == cursor_mock_thread_two
assert pool.get() == connection_mock
assert pool.get() == connection_mock
with ThreadPoolExecutor(max_workers=1) as executor:
executor.submit(thread).result()
assert pool._connection is not None
assert len(pool._thread_cursors) == 2
pool.close_all(exclude_calling_thread=True)
assert pool._connection is not None
assert len(pool._thread_cursors) == 1
assert test_thread_id in pool._thread_cursors
pool.close_cursor()
pool.close()
assert pool.get_cursor() == cursor_mock_thread_one
pool.close_all()
assert connection_factory_mock.call_count == 1
assert cursor_mock_thread_one.close.call_count == 2
assert connection_mock.cursor.call_count == 3
assert connection_mock.close.call_count == 1
def test_thread_local_shared_connection_pool_close(mocker: MockerFixture):
connection_mock = mocker.Mock()
cursor_mock = mocker.Mock()
connection_mock.cursor.return_value = cursor_mock
connection_factory_mock = mocker.Mock(return_value=connection_mock)
pool = ThreadLocalSharedConnectionPool(connection_factory_mock)
# First time we get a connection
pool.get()
pool.get()
pool.get_cursor()
pool.get_cursor()
# This shouldn't close the connection, only the cursor
pool.close()
pool.get()
pool.get()
pool.get_cursor()
pool.get_cursor()
# This shouldn't close the connection either
pool.close_all(exclude_calling_thread=True)
pool.get()
pool.get()
# Now this should close the connection
pool.close_all()
# Re-open the connection
pool.get()
pool.get()
# Close it again
pool.close_all()
assert cursor_mock.close.call_count == 2
assert connection_factory_mock.call_count == 2
assert connection_mock.close.call_count == 2