| /** |
| * 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. |
| */ |
| |
| package org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.placement; |
| |
| import static org.apache.hadoop.thirdparty.com.google.common.base.Preconditions.checkArgument; |
| |
| import java.io.IOException; |
| import java.nio.file.Files; |
| import java.nio.file.Paths; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.apache.commons.lang3.StringUtils; |
| import org.apache.hadoop.yarn.server.resourcemanager.placement.MappingRule; |
| import org.apache.hadoop.yarn.server.resourcemanager.placement.MappingRuleAction; |
| import org.apache.hadoop.yarn.server.resourcemanager.placement.MappingRuleActions; |
| import org.apache.hadoop.yarn.server.resourcemanager.placement.MappingRuleMatcher; |
| import org.apache.hadoop.yarn.server.resourcemanager.placement.MappingRuleMatchers; |
| |
| // These are generated classes - use GeneratePojos class to create them |
| // if they are missing |
| import org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.placement.schema.MappingRulesDescription; |
| import org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.placement.schema.Rule; |
| import org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.placement.schema.Rule.FallbackResult; |
| import org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.placement.schema.Rule.Policy; |
| import org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.placement.schema.Rule.Type; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import com.fasterxml.jackson.databind.ObjectMapper; |
| import org.apache.hadoop.thirdparty.com.google.common.annotations.VisibleForTesting; |
| |
| public class MappingRuleCreator { |
| private static final String ALL_USER = "*"; |
| private static Logger LOG = LoggerFactory.getLogger(MappingRuleCreator.class); |
| |
| public MappingRulesDescription getMappingRulesFromJsonFile(String filePath) |
| throws IOException { |
| byte[] fileContents = Files.readAllBytes(Paths.get(filePath)); |
| return getMappingRulesFromJson(fileContents); |
| } |
| |
| MappingRulesDescription getMappingRulesFromJson(byte[] contents) |
| throws IOException { |
| ObjectMapper objectMapper = new ObjectMapper(); |
| return objectMapper.readValue(contents, MappingRulesDescription.class); |
| } |
| |
| MappingRulesDescription getMappingRulesFromJson(String contents) |
| throws IOException { |
| ObjectMapper objectMapper = new ObjectMapper(); |
| return objectMapper.readValue(contents, MappingRulesDescription.class); |
| } |
| |
| public List<MappingRule> getMappingRulesFromFile(String jsonPath) |
| throws IOException { |
| MappingRulesDescription desc = getMappingRulesFromJsonFile(jsonPath); |
| return getMappingRules(desc); |
| } |
| |
| public List<MappingRule> getMappingRulesFromString(String json) |
| throws IOException { |
| MappingRulesDescription desc = getMappingRulesFromJson(json); |
| return getMappingRules(desc); |
| } |
| |
| @VisibleForTesting |
| List<MappingRule> getMappingRules(MappingRulesDescription rules) { |
| List<MappingRule> mappingRules = new ArrayList<>(); |
| |
| for (Rule rule : rules.getRules()) { |
| checkMandatoryParameters(rule); |
| |
| MappingRuleMatcher matcher = createMatcher(rule); |
| MappingRuleAction action = createAction(rule); |
| setFallbackToAction(rule, action); |
| |
| MappingRule mappingRule = new MappingRule(matcher, action); |
| mappingRules.add(mappingRule); |
| } |
| |
| return mappingRules; |
| } |
| |
| private MappingRuleMatcher createMatcher(Rule rule) { |
| String matches = rule.getMatches(); |
| Type type = rule.getType(); |
| |
| MappingRuleMatcher matcher = null; |
| switch (type) { |
| case USER: |
| if (ALL_USER.equals(matches)) { |
| matcher = MappingRuleMatchers.createAllMatcher(); |
| } else { |
| matcher = MappingRuleMatchers.createUserMatcher(matches); |
| } |
| break; |
| case GROUP: |
| checkArgument(!ALL_USER.equals(matches), "Cannot match '*' for groups"); |
| matcher = MappingRuleMatchers.createUserGroupMatcher(matches); |
| break; |
| case APPLICATION: |
| matcher = MappingRuleMatchers.createApplicationNameMatcher(matches); |
| break; |
| default: |
| throw new IllegalArgumentException("Unknown type: " + type); |
| } |
| |
| return matcher; |
| } |
| |
| private MappingRuleAction createAction(Rule rule) { |
| Policy policy = rule.getPolicy(); |
| String queue = rule.getParentQueue(); |
| |
| boolean create; |
| if (rule.getCreate() == null) { |
| LOG.debug("Create flag is not set for rule {}," |
| + "using \"true\" as default", rule); |
| create = true; |
| } else { |
| create = rule.getCreate(); |
| } |
| |
| MappingRuleAction action = null; |
| switch (policy) { |
| case DEFAULT_QUEUE: |
| action = MappingRuleActions.createPlaceToDefaultAction(); |
| break; |
| case REJECT: |
| action = MappingRuleActions.createRejectAction(); |
| break; |
| case PRIMARY_GROUP: |
| action = MappingRuleActions.createPlaceToQueueAction( |
| getTargetQueue(queue, "%primary_group"), create); |
| break; |
| case SECONDARY_GROUP: |
| action = MappingRuleActions.createPlaceToQueueAction( |
| getTargetQueue(queue, "%secondary_group"), create); |
| break; |
| case PRIMARY_GROUP_USER: |
| action = MappingRuleActions.createPlaceToQueueAction( |
| getTargetQueue(rule.getParentQueue(), |
| "%primary_group.%user"), create); |
| break; |
| case SECONDARY_GROUP_USER: |
| action = MappingRuleActions.createPlaceToQueueAction( |
| getTargetQueue(rule.getParentQueue(), |
| "%secondary_group.%user"), create); |
| break; |
| case SPECIFIED: |
| action = MappingRuleActions.createPlaceToQueueAction("%specified", |
| create); |
| break; |
| case CUSTOM: |
| String customTarget = rule.getCustomPlacement(); |
| checkArgument(customTarget != null, "custom queue is undefined"); |
| action = MappingRuleActions.createPlaceToQueueAction(customTarget, |
| create); |
| break; |
| case USER: |
| action = MappingRuleActions.createPlaceToQueueAction( |
| getTargetQueue(rule.getParentQueue(), |
| "%user"), create); |
| break; |
| case APPLICATION_NAME: |
| action = MappingRuleActions.createPlaceToQueueAction( |
| getTargetQueue(rule.getParentQueue(), |
| "%application"), create); |
| break; |
| case SET_DEFAULT_QUEUE: |
| String defaultQueue = rule.getValue(); |
| checkArgument(defaultQueue != null, "default queue is undefined"); |
| action = MappingRuleActions.createUpdateDefaultAction(defaultQueue); |
| break; |
| default: |
| throw new IllegalArgumentException( |
| "Unsupported policy: " + policy); |
| } |
| |
| return action; |
| } |
| |
| private void setFallbackToAction(Rule rule, MappingRuleAction action) { |
| FallbackResult fallbackResult = rule.getFallbackResult(); |
| |
| if (fallbackResult == null) { |
| action.setFallbackSkip(); |
| LOG.debug("Fallback is not defined for rule {}, using SKIP as default", rule); |
| return; |
| } |
| |
| switch (fallbackResult) { |
| case PLACE_DEFAULT: |
| action.setFallbackDefaultPlacement(); |
| break; |
| case REJECT: |
| action.setFallbackReject(); |
| break; |
| case SKIP: |
| action.setFallbackSkip(); |
| break; |
| default: |
| throw new IllegalArgumentException( |
| "Unsupported fallback rule " + fallbackResult); |
| } |
| } |
| |
| private String getTargetQueue(String parent, String placeholder) { |
| return (parent == null) ? placeholder : parent + "." + placeholder; |
| } |
| |
| private void checkMandatoryParameters(Rule rule) { |
| checkArgument(rule.getPolicy() != null, "Rule policy is undefined"); |
| checkArgument(rule.getType() != null, "Rule type is undefined"); |
| checkArgument(rule.getMatches() != null, "Match string is undefined"); |
| checkArgument(!StringUtils.isEmpty(rule.getMatches()), |
| "Match string is empty"); |
| } |
| } |