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from datetime import datetime
from pickle import dumps, loads
from unittest.mock import Mock
import pytest
from celery import states
from celery.exceptions import ImproperlyConfigured
from celery.utils.objects import Bunch
CASSANDRA_MODULES = [
'cassandra',
'cassandra.auth',
'cassandra.cluster',
'cassandra.query',
]
class test_CassandraBackend:
def setup_method(self):
self.app.conf.update(
cassandra_servers=['example.com'],
cassandra_keyspace='celery',
cassandra_table='task_results',
)
@pytest.mark.patched_module(*CASSANDRA_MODULES)
def test_init_no_cassandra(self, module):
# should raise ImproperlyConfigured when no python-driver
# installed.
from celery.backends import cassandra as mod
prev, mod.cassandra = mod.cassandra, None
try:
with pytest.raises(ImproperlyConfigured):
mod.CassandraBackend(app=self.app)
finally:
mod.cassandra = prev
@pytest.mark.patched_module(*CASSANDRA_MODULES)
def test_init_with_and_without_LOCAL_QUROM(self, module):
from celery.backends import cassandra as mod
mod.cassandra = Mock()
cons = mod.cassandra.ConsistencyLevel = Bunch(
LOCAL_QUORUM='foo',
)
self.app.conf.cassandra_read_consistency = 'LOCAL_FOO'
self.app.conf.cassandra_write_consistency = 'LOCAL_FOO'
mod.CassandraBackend(app=self.app)
cons.LOCAL_FOO = 'bar'
mod.CassandraBackend(app=self.app)
# no servers and no bundle_path raises ImproperlyConfigured
with pytest.raises(ImproperlyConfigured):
self.app.conf.cassandra_servers = None
self.app.conf.cassandra_secure_bundle_path = None
mod.CassandraBackend(
app=self.app, keyspace='b', column_family='c',
)
# both servers no bundle_path raises ImproperlyConfigured
with pytest.raises(ImproperlyConfigured):
self.app.conf.cassandra_servers = ['localhost']
self.app.conf.cassandra_secure_bundle_path = (
'/home/user/secure-connect-bundle.zip')
mod.CassandraBackend(
app=self.app, keyspace='b', column_family='c',
)
def test_init_with_cloud(self):
# Tests behavior when Cluster.connect works properly
# and cluster is created with 'cloud' param instead of 'contact_points'
from celery.backends import cassandra as mod
class DummyClusterWithBundle:
def __init__(self, *args, **kwargs):
if args != ():
# this cluster is supposed to be created with 'cloud=...'
raise ValueError('I should be created with kwargs only')
pass
def connect(self, *args, **kwargs):
return Mock()
mod.cassandra = Mock()
mod.cassandra.cluster = Mock()
mod.cassandra.cluster.Cluster = DummyClusterWithBundle
self.app.conf.cassandra_secure_bundle_path = '/path/to/bundle.zip'
self.app.conf.cassandra_servers = None
x = mod.CassandraBackend(app=self.app)
x._get_connection()
assert isinstance(x._cluster, DummyClusterWithBundle)
@pytest.mark.patched_module(*CASSANDRA_MODULES)
@pytest.mark.usefixtures('depends_on_current_app')
def test_reduce(self, module):
from celery.backends.cassandra import CassandraBackend
assert loads(dumps(CassandraBackend(app=self.app)))
@pytest.mark.patched_module(*CASSANDRA_MODULES)
def test_get_task_meta_for(self, module):
from celery.backends import cassandra as mod
mod.cassandra = Mock()
x = mod.CassandraBackend(app=self.app)
session = x._session = Mock()
execute = session.execute = Mock()
result_set = Mock()
result_set.one.return_value = [
states.SUCCESS, '1', datetime.now(), b'', b''
]
execute.return_value = result_set
x.decode = Mock()
meta = x._get_task_meta_for('task_id')
assert meta['status'] == states.SUCCESS
result_set.one.return_value = []
x._session.execute.return_value = result_set
meta = x._get_task_meta_for('task_id')
assert meta['status'] == states.PENDING
def test_as_uri(self):
# Just ensure as_uri works properly
from celery.backends import cassandra as mod
mod.cassandra = Mock()
x = mod.CassandraBackend(app=self.app)
x.as_uri()
x.as_uri(include_password=False)
@pytest.mark.patched_module(*CASSANDRA_MODULES)
def test_store_result(self, module):
from celery.backends import cassandra as mod
mod.cassandra = Mock()
x = mod.CassandraBackend(app=self.app)
session = x._session = Mock()
session.execute = Mock()
x._store_result('task_id', 'result', states.SUCCESS)
def test_timeouting_cluster(self):
# Tests behavior when Cluster.connect raises
# cassandra.OperationTimedOut.
from celery.backends import cassandra as mod
class OTOExc(Exception):
pass
class VeryFaultyCluster:
def __init__(self, *args, **kwargs):
pass
def connect(self, *args, **kwargs):
raise OTOExc()
def shutdown(self):
pass
mod.cassandra = Mock()
mod.cassandra.OperationTimedOut = OTOExc
mod.cassandra.cluster = Mock()
mod.cassandra.cluster.Cluster = VeryFaultyCluster
x = mod.CassandraBackend(app=self.app)
with pytest.raises(OTOExc):
x._store_result('task_id', 'result', states.SUCCESS)
assert x._cluster is None
assert x._session is None
def test_create_result_table(self):
# Tests behavior when session.execute raises
# cassandra.AlreadyExists.
from celery.backends import cassandra as mod
class OTOExc(Exception):
pass
class FaultySession:
def __init__(self, *args, **kwargs):
pass
def execute(self, *args, **kwargs):
raise OTOExc()
class DummyCluster:
def __init__(self, *args, **kwargs):
pass
def connect(self, *args, **kwargs):
return FaultySession()
mod.cassandra = Mock()
mod.cassandra.cluster = Mock()
mod.cassandra.cluster.Cluster = DummyCluster
mod.cassandra.AlreadyExists = OTOExc
x = mod.CassandraBackend(app=self.app)
x._get_connection(write=True)
assert x._session is not None
def test_init_session(self):
# Tests behavior when Cluster.connect works properly
from celery.backends import cassandra as mod
class DummyCluster:
def __init__(self, *args, **kwargs):
pass
def connect(self, *args, **kwargs):
return Mock()
mod.cassandra = Mock()
mod.cassandra.cluster = Mock()
mod.cassandra.cluster.Cluster = DummyCluster
x = mod.CassandraBackend(app=self.app)
assert x._session is None
x._get_connection(write=True)
assert x._session is not None
s = x._session
x._get_connection()
assert s is x._session
def test_auth_provider(self):
# Ensure valid auth_provider works properly, and invalid one raises
# ImproperlyConfigured exception.
from celery.backends import cassandra as mod
class DummyAuth:
ValidAuthProvider = Mock()
mod.cassandra = Mock()
mod.cassandra.auth = DummyAuth
# Valid auth_provider
self.app.conf.cassandra_auth_provider = 'ValidAuthProvider'
self.app.conf.cassandra_auth_kwargs = {
'username': 'stuff'
}
mod.CassandraBackend(app=self.app)
# Invalid auth_provider
self.app.conf.cassandra_auth_provider = 'SpiderManAuth'
self.app.conf.cassandra_auth_kwargs = {
'username': 'Jack'
}
with pytest.raises(ImproperlyConfigured):
mod.CassandraBackend(app=self.app)
def test_options(self):
# Ensure valid options works properly
from celery.backends import cassandra as mod
mod.cassandra = Mock()
# Valid options
self.app.conf.cassandra_options = {
'cql_version': '3.2.1',
'protocol_version': 3
}
self.app.conf.cassandra_port = None
x = mod.CassandraBackend(app=self.app)
# Default port is 9042
assert x.port == 9042
# Valid options with port specified
self.app.conf.cassandra_port = 1234
x = mod.CassandraBackend(app=self.app)
assert x.port == 1234
|
