def zodb_filter_middleware(
app,
global_conf, # A dict containing the ['DEFAULT'] section of the ini.
configuration,
initializer=None,
key="zodb.connection",
transaction_key='transaction.manager'):
"""
factory for :py:class:ZODBAppFactory
This middleware factory is compatible with the filter_app
prototype from `PasteDeploy`. It can, however, be used with
any WSGI server if properly called.
:param initializer: an optional ZODB initializer
module.dotted.name:callable,
eg: 'cromlech.zodb.utils:initialize_applications'
:param transaction: does the middelware needs to manage the transaction
for other params see :py:meth:ZODBApp.__init__
"""
if initializer is not None:
# initializer is a string: py_module_path:class_or_function
initializer = eval_loader(initializer)
# configuration is an XML-based ZODB conf
db = init_db(configuration, initializer)
return ZODBApp(
app, db, key, transaction_key,
transaction_manager_factory=environ_transaction_manager)
def test_eval_loader():
assert eval_loader('cromlech.zodb.utils:eval_loader') is eval_loader
assert (eval_loader('cromlech.zodb.tests.fixture:Foo').__doc__ ==
"class to test eval_loader")
with pytest.raises(RuntimeError):
eval_loader(':foo')
with pytest.raises(ImportError):
# module does not exists
eval_loader('cromlech.zodb.doesnotexiste:id')
with pytest.raises(ImportError):
# object inside module does not exists
eval_loader('cromlech.zodb.tests.fixture:Bar')