| /* |
| * 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.shardingsphere.readwritesplitting.yaml.swapper; |
| |
| import com.google.common.base.Strings; |
| import org.apache.shardingsphere.infra.algorithm.core.config.AlgorithmConfiguration; |
| import org.apache.shardingsphere.mode.path.RuleNodePath; |
| import org.apache.shardingsphere.infra.util.yaml.YamlEngine; |
| import org.apache.shardingsphere.infra.util.yaml.datanode.YamlDataNode; |
| import org.apache.shardingsphere.infra.algorithm.core.yaml.YamlAlgorithmConfiguration; |
| import org.apache.shardingsphere.infra.algorithm.core.yaml.YamlAlgorithmConfigurationSwapper; |
| import org.apache.shardingsphere.infra.yaml.config.swapper.rule.YamlDataNodeRuleConfigurationSwapper; |
| import org.apache.shardingsphere.readwritesplitting.api.ReadwriteSplittingRuleConfiguration; |
| import org.apache.shardingsphere.readwritesplitting.api.rule.ReadwriteSplittingDataSourceGroupRuleConfiguration; |
| import org.apache.shardingsphere.readwritesplitting.api.transaction.TransactionalReadQueryStrategy; |
| import org.apache.shardingsphere.readwritesplitting.constant.ReadwriteSplittingOrder; |
| import org.apache.shardingsphere.readwritesplitting.metadata.nodepath.ReadwriteSplittingRuleNodePathProvider; |
| import org.apache.shardingsphere.readwritesplitting.yaml.config.rule.YamlReadwriteSplittingDataSourceGroupRuleConfiguration; |
| |
| import java.util.Collection; |
| import java.util.LinkedHashMap; |
| import java.util.LinkedList; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Map.Entry; |
| import java.util.Optional; |
| import java.util.stream.Collectors; |
| |
| /** |
| * YAML readwrite-splitting data node rule configuration swapper. |
| */ |
| public final class YamlReadwriteSplittingDataNodeRuleConfigurationSwapper implements YamlDataNodeRuleConfigurationSwapper<ReadwriteSplittingRuleConfiguration> { |
| |
| private final YamlAlgorithmConfigurationSwapper algorithmSwapper = new YamlAlgorithmConfigurationSwapper(); |
| |
| private final RuleNodePath readwriteSplittingRuleNodePath = new ReadwriteSplittingRuleNodePathProvider().getRuleNodePath(); |
| |
| @Override |
| public Collection<YamlDataNode> swapToDataNodes(final ReadwriteSplittingRuleConfiguration data) { |
| Collection<YamlDataNode> result = new LinkedList<>(); |
| for (Entry<String, AlgorithmConfiguration> entry : data.getLoadBalancers().entrySet()) { |
| result.add(new YamlDataNode(readwriteSplittingRuleNodePath.getNamedItem(ReadwriteSplittingRuleNodePathProvider.LOAD_BALANCERS).getPath(entry.getKey()), |
| YamlEngine.marshal(algorithmSwapper.swapToYamlConfiguration(entry.getValue())))); |
| } |
| for (ReadwriteSplittingDataSourceGroupRuleConfiguration each : data.getDataSourceGroups()) { |
| result.add(new YamlDataNode(readwriteSplittingRuleNodePath.getNamedItem(ReadwriteSplittingRuleNodePathProvider.DATA_SOURCES).getPath(each.getName()), |
| YamlEngine.marshal(swapToYamlConfiguration(each)))); |
| } |
| return result; |
| } |
| |
| private YamlReadwriteSplittingDataSourceGroupRuleConfiguration swapToYamlConfiguration(final ReadwriteSplittingDataSourceGroupRuleConfiguration dataSourceGroupRuleConfig) { |
| YamlReadwriteSplittingDataSourceGroupRuleConfiguration result = new YamlReadwriteSplittingDataSourceGroupRuleConfiguration(); |
| result.setWriteDataSourceName(dataSourceGroupRuleConfig.getWriteDataSourceName()); |
| result.setReadDataSourceNames(dataSourceGroupRuleConfig.getReadDataSourceNames()); |
| result.setTransactionalReadQueryStrategy(dataSourceGroupRuleConfig.getTransactionalReadQueryStrategy().name()); |
| result.setLoadBalancerName(dataSourceGroupRuleConfig.getLoadBalancerName()); |
| return result; |
| } |
| |
| @Override |
| public Optional<ReadwriteSplittingRuleConfiguration> swapToObject(final Collection<YamlDataNode> dataNodes) { |
| List<YamlDataNode> validDataNodes = dataNodes.stream().filter(each -> readwriteSplittingRuleNodePath.getRoot().isValidatedPath(each.getKey())).collect(Collectors.toList()); |
| if (validDataNodes.isEmpty()) { |
| return Optional.empty(); |
| } |
| Collection<ReadwriteSplittingDataSourceGroupRuleConfiguration> dataSourceGroups = new LinkedList<>(); |
| Map<String, AlgorithmConfiguration> loadBalancerMap = new LinkedHashMap<>(); |
| for (YamlDataNode each : validDataNodes) { |
| readwriteSplittingRuleNodePath.getNamedItem(ReadwriteSplittingRuleNodePathProvider.DATA_SOURCES).getName(each.getKey()) |
| .ifPresent(optional -> dataSourceGroups.add(swapDataSourceGroup(optional, YamlEngine.unmarshal(each.getValue(), YamlReadwriteSplittingDataSourceGroupRuleConfiguration.class)))); |
| readwriteSplittingRuleNodePath.getNamedItem(ReadwriteSplittingRuleNodePathProvider.LOAD_BALANCERS).getName(each.getKey()) |
| .ifPresent(optional -> loadBalancerMap.put(optional, algorithmSwapper.swapToObject(YamlEngine.unmarshal(each.getValue(), YamlAlgorithmConfiguration.class)))); |
| } |
| return Optional.of(new ReadwriteSplittingRuleConfiguration(dataSourceGroups, loadBalancerMap)); |
| } |
| |
| private ReadwriteSplittingDataSourceGroupRuleConfiguration swapDataSourceGroup(final String name, final YamlReadwriteSplittingDataSourceGroupRuleConfiguration yamlDataSourceRuleConfig) { |
| return new ReadwriteSplittingDataSourceGroupRuleConfiguration(name, yamlDataSourceRuleConfig.getWriteDataSourceName(), yamlDataSourceRuleConfig.getReadDataSourceNames(), |
| getTransactionalReadQueryStrategy(yamlDataSourceRuleConfig), yamlDataSourceRuleConfig.getLoadBalancerName()); |
| } |
| |
| private TransactionalReadQueryStrategy getTransactionalReadQueryStrategy(final YamlReadwriteSplittingDataSourceGroupRuleConfiguration yamlDataSourceGroupRuleConfig) { |
| return Strings.isNullOrEmpty(yamlDataSourceGroupRuleConfig.getTransactionalReadQueryStrategy()) |
| ? TransactionalReadQueryStrategy.DYNAMIC |
| : TransactionalReadQueryStrategy.valueOf(yamlDataSourceGroupRuleConfig.getTransactionalReadQueryStrategy()); |
| } |
| |
| @Override |
| public Class<ReadwriteSplittingRuleConfiguration> getTypeClass() { |
| return ReadwriteSplittingRuleConfiguration.class; |
| } |
| |
| @Override |
| public String getRuleTagName() { |
| return "READWRITE_SPLITTING"; |
| } |
| |
| @Override |
| public int getOrder() { |
| return ReadwriteSplittingOrder.ORDER; |
| } |
| } |