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| # Copyright 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. | |
| import logging | |
| import traceback | |
| from warnings import warn | |
| from cassandra.util import Version | |
| DSE_60 = Version('6.0.0') | |
| DSE_51_MIN_SUPPORTED = Version('5.1.13') | |
| DSE_60_MIN_SUPPORTED = Version('6.0.5') | |
| log = logging.getLogger(__name__) | |
| def namespace(cls): | |
| """ | |
| Best-effort method for getting the namespace in which a class is defined. | |
| """ | |
| try: | |
| # __module__ can be None | |
| module = cls.__module__ or '' | |
| except Exception: | |
| warn("Unable to obtain namespace for {cls} for Insights, returning ''. " | |
| "Exception: \n{e}".format(e=traceback.format_exc(), cls=cls)) | |
| module = '' | |
| module_internal_namespace = _module_internal_namespace_or_emtpy_string(cls) | |
| if module_internal_namespace: | |
| return '.'.join((module, module_internal_namespace)) | |
| return module | |
| def _module_internal_namespace_or_emtpy_string(cls): | |
| """ | |
| Best-effort method for getting the module-internal namespace in which a | |
| class is defined -- i.e. the namespace _inside_ the module. | |
| """ | |
| try: | |
| qualname = cls.__qualname__ | |
| except AttributeError: | |
| return '' | |
| return '.'.join( | |
| # the last segment is the name of the class -- use everything else | |
| qualname.split('.')[:-1] | |
| ) | |
| def version_supports_insights(dse_version): | |
| if dse_version: | |
| try: | |
| dse_version = Version(dse_version) | |
| return (DSE_51_MIN_SUPPORTED <= dse_version < DSE_60 | |
| or | |
| DSE_60_MIN_SUPPORTED <= dse_version) | |
| except Exception: | |
| warn("Unable to check version {v} for Insights compatibility, returning False. " | |
| "Exception: \n{e}".format(e=traceback.format_exc(), v=dse_version)) | |
| return False | |