def test_savepoint_localstore_flush(self):
"""
This is a very simple test to see if savepoints will actually
be committed, i.e. flushed out from localstore into cache.
"""
from django.db import transaction
transaction.enter_transaction_management()
transaction.managed()
TABLE_NAME = 'test_table'
cache_backend = johnny.cache.get_backend()
cache_backend.patch()
keyhandler = cache_backend.keyhandler
keygen = keyhandler.keygen
tm = cache_backend.cache_backend
# First, we set one key-val pair generated for our non-existing table.
table_key = keygen.gen_table_key(TABLE_NAME)
tm.set(table_key, 'val1')
# Then we create a savepoint.
# The key-value pair is moved into 'trans_sids' item of localstore.
tm._create_savepoint('savepoint1')
# We then commit all the savepoints, which should write the changes.
tm.commit()
# And this checks if it actually happened.
backend = johnny_settings._get_backend()
self.failUnless(backend.get(table_key))
def __init__(self, cache_backend=None, keyhandler=None, keygen=None):
self.__dict__ = self.__shared_state
self.prefix = settings.MIDDLEWARE_KEY_PREFIX
if keyhandler: self.kh_class = keyhandler
if keygen: self.kg_class = keygen
if not cache_backend and not hasattr(self, 'cache_backend'):
cache_backend = settings._get_backend()
if not keygen and not hasattr(self, 'kg_class'):
self.kg_class = KeyGen
if keyhandler is None and not hasattr(self, 'kh_class'):
self.kh_class = KeyHandler
if cache_backend:
self.cache_backend = TransactionManager(cache_backend, self.kg_class)
self.keyhandler = self.kh_class(self.cache_backend, self.kg_class, self.prefix)
self._patched = getattr(self, '_patched', False)
def __init__(self, cache_backend=None, keyhandler=None, keygen=None):
self.__dict__ = self.__shared_state
self.prefix = settings.MIDDLEWARE_KEY_PREFIX
if keyhandler:
self.kh_class = keyhandler
if keygen:
self.kg_class = keygen
if not cache_backend and not hasattr(self, 'cache_backend'):
cache_backend = settings._get_backend()
if not keygen and not hasattr(self, 'kg_class'):
self.kg_class = KeyGen
if keyhandler is None and not hasattr(self, 'kh_class'):
self.kh_class = KeyHandler
if cache_backend:
self.cache_backend = TransactionManager(cache_backend,
self.kg_class)
self.keyhandler = self.kh_class(self.cache_backend, self.kg_class,
self.prefix)
self._patched = getattr(self, '_patched', False)