| #!/usr/bin/env python |
| """ |
| Licensed to the Apache Software Foundation (ASF) under one |
| or more contributor license agreements. See the NOTICE file |
| distributed with this work for additional information |
| regarding copyright ownership. The ASF licenses this file |
| to you 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. |
| |
| """ |
| |
| from hcat import hcat |
| from ambari_commons import OSConst |
| from ambari_commons.os_family_impl import OsFamilyImpl |
| from resource_management.core.logger import Logger |
| from resource_management.core.exceptions import ClientComponentHasNoStatus |
| from resource_management.libraries.functions import stack_select |
| from resource_management.libraries.functions.constants import StackFeature |
| from resource_management.libraries.functions.stack_features import check_stack_feature |
| from resource_management.libraries.script.script import Script |
| |
| |
| class HCatClient(Script): |
| def install(self, env): |
| import params |
| self.install_packages(env) |
| self.configure(env) |
| |
| def configure(self, env): |
| import params |
| env.set_params(params) |
| hcat() |
| |
| def status(self, env): |
| raise ClientComponentHasNoStatus() |
| |
| |
| |
| def pre_upgrade_restart(self, env, upgrade_type=None): |
| """ |
| Execute <stack-selector-tool> before reconfiguring this client to the new stack version. |
| |
| :param env: |
| :param upgrade_type: |
| :return: |
| """ |
| Logger.info("Executing Hive HCat Client Stack Upgrade pre-restart") |
| |
| import params |
| env.set_params(params) |
| |
| # this function should not execute if the stack version does not support rolling upgrade |
| if not (params.version and check_stack_feature(StackFeature.ROLLING_UPGRADE, params.version)): |
| return |
| |
| # HCat client doesn't have a first-class entry in <stack-selector-tool>. Since clients always |
| # update after daemons, this ensures that the hcat directories are correct on hosts |
| # which do not include the WebHCat daemon |
| stack_select.select_packages(params.version) |
| |
| |
| if __name__ == "__main__": |
| HCatClient().execute() |