AMBARI-20322 HDP 3.0 TP - create Service Advisor for Slider (dsen)
Project: http://git-wip-us.apache.org/repos/asf/ambari/repo Commit: http://git-wip-us.apache.org/repos/asf/ambari/commit/3d4a8364 Tree: http://git-wip-us.apache.org/repos/asf/ambari/tree/3d4a8364 Diff: http://git-wip-us.apache.org/repos/asf/ambari/diff/3d4a8364 Branch: refs/heads/branch-feature-AMBARI-12556 Commit: 3d4a836443f156180362ca3b3b1f73f2142d6f69 Parents: c4fce53 Author: Dmytro Sen <d...@apache.org> Authored: Mon Mar 13 13:24:09 2017 +0200 Committer: Dmytro Sen <d...@apache.org> Committed: Mon Mar 13 13:24:09 2017 +0200 ---------------------------------------------------------------------- .../SLIDER/0.91.0.3.0/service_advisor.py | 133 +++++++++++++++++++ 1 file changed, 133 insertions(+) ---------------------------------------------------------------------- http://git-wip-us.apache.org/repos/asf/ambari/blob/3d4a8364/ambari-server/src/main/resources/common-services/SLIDER/0.91.0.3.0/service_advisor.py ---------------------------------------------------------------------- diff --git a/ambari-server/src/main/resources/common-services/SLIDER/0.91.0.3.0/service_advisor.py b/ambari-server/src/main/resources/common-services/SLIDER/0.91.0.3.0/service_advisor.py new file mode 100644 index 0000000..6122f14 --- /dev/null +++ b/ambari-server/src/main/resources/common-services/SLIDER/0.91.0.3.0/service_advisor.py @@ -0,0 +1,133 @@ +#!/usr/bin/env ambari-python-wrap +""" +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. +""" + +# Python imports +import imp +import os +import traceback + + +from resource_management.core.logger import Logger + +SCRIPT_DIR = os.path.dirname(os.path.abspath(__file__)) +STACKS_DIR = os.path.join(SCRIPT_DIR, '../../../stacks/') +PARENT_FILE = os.path.join(STACKS_DIR, 'service_advisor.py') + +try: + with open(PARENT_FILE, 'rb') as fp: + service_advisor = imp.load_module('service_advisor', fp, PARENT_FILE, ('.py', 'rb', imp.PY_SOURCE)) +except Exception as e: + traceback.print_exc() + print "Failed to load parent" + + +class SliderServiceAdvisor(service_advisor.ServiceAdvisor): + + def __init__(self, *args, **kwargs): + self.as_super = super(SliderServiceAdvisor, self) + self.as_super.__init__(*args, **kwargs) + + # Always call these methods + self.modifyMastersWithMultipleInstances() + self.modifyCardinalitiesDict() + self.modifyHeapSizeProperties() + self.modifyNotValuableComponents() + self.modifyComponentsNotPreferableOnServer() + self.modifyComponentLayoutSchemes() + + def modifyMastersWithMultipleInstances(self): + """ + Modify the set of masters with multiple instances. + Must be overriden in child class. + """ + # Nothing to do + pass + + def modifyCardinalitiesDict(self): + """ + Modify the dictionary of cardinalities. + Must be overriden in child class. + """ + # Nothing to do + pass + + def modifyHeapSizeProperties(self): + """ + Modify the dictionary of heap size properties. + Must be overriden in child class. + """ + self.heap_size_properties = {} + + def modifyNotValuableComponents(self): + """ + Modify the set of components whose host assignment is based on other services. + Must be overriden in child class. + """ + # Nothing to do + pass + + def modifyComponentsNotPreferableOnServer(self): + """ + Modify the set of components that are not preferable on the server. + Must be overriden in child class. + """ + # Nothing to do + pass + + def modifyComponentLayoutSchemes(self): + """ + Modify layout scheme dictionaries for components. + The scheme dictionary basically maps the number of hosts to + host index where component should exist. + Must be overriden in child class. + """ + # Nothing to do + pass + + def getServiceComponentLayoutValidations(self, services, hosts): + """ + Get a list of errors. + Must be overriden in child class. + """ + # Nothing to do + return [] + + def getServiceConfigurationRecommendations(self, configurations, clusterData, services, hosts): + """ + Entry point. + Must be overriden in child class. + """ + Logger.info("Class: %s, Method: %s. Recommending Service Configurations." % + (self.__class__.__name__, inspect.stack()[0][3])) + + # Nothing to do + pass + + def getServiceConfigurationsValidationItems(self, configurations, recommendedDefaults, services, hosts): + """ + Entry point. + Validate configurations for the service. Return a list of errors. + The code for this function should be the same for each Service Advisor. + """ + Logger.info("Class: %s, Method: %s. Validating Configurations." % + (self.__class__.__name__, inspect.stack()[0][3])) + + # Nothing to do + return [] +
