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| # Copyright 2013-2017 DataStax, Inc. | ||
| # | ||
| # Licensed under the Apache License, Version 2.0 (the "License"); | ||
| # you may not use this file except in compliance with the License. | ||
| # You may obtain a copy of the License at | ||
| # | ||
| # http://www.apache.org/licenses/LICENSE-2.0 | ||
| # | ||
| # Unless required by applicable law or agreed to in writing, software | ||
| # distributed under the License is distributed on an "AS IS" BASIS, | ||
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| # See the License for the specific language governing permissions and | ||
| # limitations under the License. | ||
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| from tests.integration import CCM_KWARGS, use_cluster, remove_cluster, MockLoggingHandler | ||
| from tests.integration import setup_keyspace | ||
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| from cassandra.cluster import Cluster | ||
| from cassandra import cluster | ||
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| from collections import namedtuple | ||
| from functools import wraps | ||
| import logging | ||
| from threading import Thread, Event | ||
| from ccmlib.node import TimeoutError | ||
| import time | ||
| import logging | ||
|
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||
| try: | ||
| import unittest2 as unittest | ||
| except ImportError: | ||
| import unittest # noqa | ||
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| def setup_module(): | ||
| remove_cluster() | ||
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| UPGRADE_CLUSTER_NAME = "upgrade_cluster" | ||
| UpgradePath = namedtuple('UpgradePath', ('name', 'starting_version', 'upgrade_version', 'configuration_options')) | ||
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| log = logging.getLogger(__name__) | ||
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| class upgrade_paths(object): | ||
| """ | ||
| Decorator used to specify the upgrade paths for a particular method | ||
| """ | ||
| def __init__(self, paths): | ||
| self.paths = paths | ||
|
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||
| def __call__(self, method): | ||
| @wraps(method) | ||
| def wrapper(*args, **kwargs): | ||
| for path in self.paths: | ||
| self_from_decorated = args[0] | ||
| log.debug('setting up {path}'.format(path=path)) | ||
| self_from_decorated.UPGRADE_PATH = path | ||
| self_from_decorated._upgrade_step_setup() | ||
| method(*args, **kwargs) | ||
| log.debug('tearing down {path}'.format(path=path)) | ||
| self_from_decorated._upgrade_step_teardown() | ||
| return wrapper | ||
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| class UpgradeBase(unittest.TestCase): | ||
| """ | ||
| Base class for the upgrade tests. The _setup method | ||
| will clean the environment and start the appropriate C* version according | ||
| to the upgrade path. The upgrade can be done in a different thread using the | ||
| start_upgrade upgrade_method (this would be the most realistic scenario) | ||
| or node by node, waiting for the upgrade to happen, using _upgrade_one_node method | ||
| """ | ||
| UPGRADE_PATH = None | ||
| start_cluster = True | ||
| set_keyspace = True | ||
|
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||
| @classmethod | ||
| def setUpClass(cls): | ||
| cls.logger_handler = MockLoggingHandler() | ||
| logger = logging.getLogger(cluster.__name__) | ||
| logger.addHandler(cls.logger_handler) | ||
|
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| def _upgrade_step_setup(self): | ||
| """ | ||
| This is not the regular _setUp method because it will be called from | ||
| the decorator instead of letting nose handle it. | ||
| This setup method will start a cluster with the right version according | ||
| to the variable UPGRADE_PATH. | ||
| """ | ||
| remove_cluster() | ||
| self.cluster = use_cluster(UPGRADE_CLUSTER_NAME + self.UPGRADE_PATH.name, [3], | ||
| ccm_options=self.UPGRADE_PATH.starting_version, set_keyspace=self.set_keyspace, | ||
| configuration_options=self.UPGRADE_PATH.configuration_options) | ||
| self.nodes = self.cluster.nodelist() | ||
| self.last_node_upgraded = None | ||
| self.upgrade_done = Event() | ||
| self.upgrade_thread = None | ||
|
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| if self.start_cluster: | ||
| setup_keyspace() | ||
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| self.cluster_driver = Cluster() | ||
| self.session = self.cluster_driver.connect() | ||
| self.logger_handler.reset() | ||
|
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| def _upgrade_step_teardown(self): | ||
| """ | ||
| special tearDown method called by the decorator after the method has ended | ||
| """ | ||
| if self.upgrade_thread: | ||
| self.upgrade_thread.join(timeout=5) | ||
| self.upgrade_thread = None | ||
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| if self.start_cluster: | ||
| self.cluster_driver.shutdown() | ||
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| def start_upgrade(self, time_node_upgrade): | ||
| """ | ||
| Starts the upgrade in a different thread | ||
| """ | ||
| log.debug('Starting upgrade in new thread') | ||
| self.upgrade_thread = Thread(target=self._upgrade, args=(time_node_upgrade,)) | ||
| self.upgrade_thread.start() | ||
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| def _upgrade(self, time_node_upgrade): | ||
| """ | ||
| Starts the upgrade in the same thread | ||
| """ | ||
| start_time = time.time() | ||
| for node in self.nodes: | ||
| self.upgrade_node(node) | ||
| end_time = time.time() | ||
| time_to_upgrade = end_time - start_time | ||
| if time_node_upgrade > time_to_upgrade: | ||
| time.sleep(time_node_upgrade - time_to_upgrade) | ||
| self.upgrade_done.set() | ||
|
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| def is_upgraded(self): | ||
| """ | ||
| Returns True if the upgrade has finished and False otherwise | ||
| """ | ||
| return self.upgrade_done.is_set() | ||
|
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| def wait_for_upgrade(self, timeout=None): | ||
| """ | ||
| Waits until the upgrade has completed | ||
| """ | ||
| self.upgrade_done.wait(timeout=timeout) | ||
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| def upgrade_node(self, node): | ||
| """ | ||
| Upgrades only one node. Return True if the upgrade | ||
| has finished and False otherwise | ||
| """ | ||
| node.drain() | ||
| node.stop(gently=True) | ||
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| node.set_install_dir(**self.UPGRADE_PATH.upgrade_version) | ||
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| # There must be a cleaner way of doing this, but it's necessary here | ||
| # to call the private method from cluster __update_topology_files | ||
| self.cluster._Cluster__update_topology_files() | ||
| try: | ||
| node.start(wait_for_binary_proto=True, wait_other_notice=True) | ||
| except TimeoutError: | ||
| self.fail("Error starting C* node while upgrading") | ||
|
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| return True | ||
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| class UpgradeBaseAuth(UpgradeBase): | ||
| """ | ||
| Base class of authentication test, the authentication parameters for | ||
| C* still have to be specified within the upgrade path variable | ||
| """ | ||
| start_cluster = False | ||
| set_keyspace = False | ||
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| def _upgrade_step_setup(self): | ||
| """ | ||
| We sleep here for the same reason as we do in test_authentication.py: | ||
| there seems to be some race, with some versions of C* taking longer to | ||
| get the auth (and default user) setup. Sleep here to give it a chance | ||
| """ | ||
| super(UpgradeBaseAuth, self)._upgrade_step_setup() | ||
| time.sleep(10) |
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