RaigorJiang commented on a change in pull request #15069: URL: https://github.com/apache/shardingsphere/pull/15069#discussion_r793211313
########## File path: shardingsphere-proxy/shardingsphere-proxy-backend/src/main/java/org/apache/shardingsphere/proxy/backend/text/distsql/ral/common/show/executor/ExportSchemaConfigurationExecutor.java ########## @@ -0,0 +1,348 @@ +/* + * 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.proxy.backend.text.distsql.ral.common.show.executor; + +import com.google.common.base.Strings; +import com.zaxxer.hikari.HikariDataSource; +import lombok.RequiredArgsConstructor; +import org.apache.shardingsphere.distsql.parser.statement.ral.common.ExportSchemaConfigurationStatement; +import org.apache.shardingsphere.infra.config.algorithm.ShardingSphereAlgorithmConfiguration; +import org.apache.shardingsphere.infra.config.rulealtered.OnRuleAlteredActionConfiguration; +import org.apache.shardingsphere.infra.exception.SchemaNotExistedException; +import org.apache.shardingsphere.infra.exception.ShardingSphereException; +import org.apache.shardingsphere.infra.merge.result.MergedResult; +import org.apache.shardingsphere.infra.metadata.ShardingSphereMetaData; +import org.apache.shardingsphere.proxy.backend.context.ProxyContext; +import org.apache.shardingsphere.proxy.backend.exception.NoDatabaseSelectedException; +import org.apache.shardingsphere.proxy.backend.response.header.query.impl.QueryHeader; +import org.apache.shardingsphere.proxy.backend.session.ConnectionSession; +import org.apache.shardingsphere.sharding.api.config.ShardingRuleConfiguration; +import org.apache.shardingsphere.sharding.api.config.rule.ShardingAutoTableRuleConfiguration; +import org.apache.shardingsphere.sharding.api.config.rule.ShardingTableRuleConfiguration; +import org.apache.shardingsphere.sharding.api.config.strategy.keygen.KeyGenerateStrategyConfiguration; +import org.apache.shardingsphere.sharding.api.config.strategy.sharding.ComplexShardingStrategyConfiguration; +import org.apache.shardingsphere.sharding.api.config.strategy.sharding.HintShardingStrategyConfiguration; +import org.apache.shardingsphere.sharding.api.config.strategy.sharding.NoneShardingStrategyConfiguration; +import org.apache.shardingsphere.sharding.api.config.strategy.sharding.ShardingStrategyConfiguration; +import org.apache.shardingsphere.sharding.api.config.strategy.sharding.StandardShardingStrategyConfiguration; +import org.apache.shardingsphere.sharding.merge.dal.common.MultipleLocalDataMergedResult; + +import javax.sql.DataSource; +import java.io.File; +import java.io.FileOutputStream; +import java.io.IOException; +import java.sql.Types; +import java.util.Arrays; +import java.util.Collections; +import java.util.List; +import java.util.Map; +import java.util.Optional; + +/** + * Export schema configuration executor. + */ +@RequiredArgsConstructor +public final class ExportSchemaConfigurationExecutor extends AbstractShowExecutor { + + private static final String CONFIG = "config"; + + private static final String COLON = ":"; + + private static final String SPACE = " "; + + private static final String NEWLINE = "\n"; + + private static final String COLON_SPACE = COLON + SPACE; + + private static final String COLON_NEWLINE = COLON + NEWLINE; + + private static final String INDENT = SPACE + SPACE; + + private final ExportSchemaConfigurationStatement sqlStatement; + + private final ConnectionSession connectionSession; + + @Override + protected List<QueryHeader> createQueryHeaders() { + return Arrays.asList(new QueryHeader("", "", CONFIG, CONFIG, Types.VARCHAR, "VARCHAR", 128, 0, false, false, false, false)); + } + + @Override + protected MergedResult createMergedResult() { + String schemaName = getSchemaName(); + ShardingSphereMetaData metaData = ProxyContext.getInstance().getMetaData(schemaName); + StringBuilder result = new StringBuilder(); + result.append("schemaName").append(COLON_SPACE).append(schemaName).append(NEWLINE); + getDataSourcesConfig(metaData, result); + Optional<ShardingRuleConfiguration> ruleConfig = metaData.getRuleMetaData().getConfigurations() + .stream().filter(each -> each instanceof ShardingRuleConfiguration).map(each -> (ShardingRuleConfiguration) each).findAny(); + ruleConfig.ifPresent(rule -> getRulesConfig(rule, result)); + if (!sqlStatement.getFilePath().isPresent()) { + return new MultipleLocalDataMergedResult(Collections.singleton(Collections.singletonList(result.toString()))); + } + + File outFile = new File(sqlStatement.getFilePath().get()); + try (FileOutputStream stream = new FileOutputStream(outFile)) { + stream.write(result.toString().getBytes()); + stream.flush(); + } catch (final IOException ex) { + throw new ShardingSphereException(ex); + } + return null; + } + + private void getDataSourcesConfig(final ShardingSphereMetaData metaData, final StringBuilder result) { + if (null == metaData.getResource().getDataSources() || metaData.getResource().getDataSources().isEmpty()) { + return; + } + result.append(NEWLINE).append("dataSources").append(COLON_NEWLINE); + for (Map.Entry<String, DataSource> each : metaData.getResource().getDataSources().entrySet()) { + HikariDataSource dataSource = (HikariDataSource) each.getValue(); + result.append(INDENT).append(each.getKey()).append(COLON_NEWLINE); + result.append(indent(2)).append("url").append(COLON_SPACE).append(dataSource.getJdbcUrl()).append(NEWLINE); + result.append(indent(2)).append("username").append(COLON_SPACE).append(dataSource.getUsername()).append(NEWLINE); + result.append(indent(2)).append("password").append(COLON_SPACE).append(dataSource.getPassword()).append(NEWLINE); + result.append(indent(2)).append("connectionTimeoutMilliseconds").append(COLON_SPACE).append(dataSource.getConnectionTimeout()).append(NEWLINE); + result.append(indent(2)).append("idleTimeoutMilliseconds").append(COLON_SPACE).append(dataSource.getIdleTimeout()).append(NEWLINE); + result.append(indent(2)).append("maxLifetimeMilliseconds").append(COLON_SPACE).append(dataSource.getMaxLifetime()).append(NEWLINE); + result.append(indent(2)).append("maxPoolSize").append(COLON_SPACE).append(dataSource.getMaximumPoolSize()).append(NEWLINE); + result.append(indent(2)).append("minPoolSize").append(COLON_SPACE).append(dataSource.getMinimumIdle()).append(NEWLINE); + } + } + + private void getRulesConfig(final ShardingRuleConfiguration ruleConfig, final StringBuilder result) { + result.append(NEWLINE).append("rules").append(COLON_NEWLINE); + result.append("- !SHARDING").append(NEWLINE); + getTablesConfig(ruleConfig, result); + getBindingTablesConfig(ruleConfig, result); + getDefaultDatabaseStrategyConfig(ruleConfig, result); + getDefaultTableStrategyConfig(ruleConfig, result); + getShardingAlgorithmsConfig(ruleConfig, result); + getKeyGeneratorsConfig(ruleConfig, result); + getScalingConfig(ruleConfig, result); + } + + private void getTablesConfig(final ShardingRuleConfiguration ruleConfig, final StringBuilder result) { + if (ruleConfig.getTables().isEmpty() || ruleConfig.getAutoTables().isEmpty()) { + return; + } + result.append(INDENT).append("tables").append(COLON_NEWLINE); + getTableRulesConfig(ruleConfig, result); + getAutoTableRulesConfig(ruleConfig, result); + } + + private void getTableRulesConfig(final ShardingRuleConfiguration ruleConfig, final StringBuilder result) { + for (ShardingTableRuleConfiguration each : ruleConfig.getTables()) { + getTableRulesItemConfig(each.getLogicTable(), each.getActualDataNodes(), each.getTableShardingStrategy(), each.getKeyGenerateStrategy(), result); + } + } + + private void getAutoTableRulesConfig(final ShardingRuleConfiguration ruleConfig, final StringBuilder result) { + for (ShardingAutoTableRuleConfiguration each : ruleConfig.getAutoTables()) { + getTableRulesItemConfig(each.getLogicTable(), each.getActualDataSources(), each.getShardingStrategy(), each.getKeyGenerateStrategy(), result); + } + } + + private void getTableRulesItemConfig(final String logicTable, final String actualDataNodes, final ShardingStrategyConfiguration tableShardingStrategy, + final KeyGenerateStrategyConfiguration keyGenerateStrategy, final StringBuilder result) { + result.append(indent(2)).append(logicTable).append(COLON_NEWLINE); + result.append(indent(3)).append("actualDataNodes").append(COLON_SPACE).append(actualDataNodes).append(NEWLINE); + result.append(indent(3)).append("tableStrategy").append(COLON_NEWLINE); + String algorithmName = ""; + String shardingColumn = ""; + String shardingAlgorithmName = ""; + if (tableShardingStrategy instanceof StandardShardingStrategyConfiguration) { + StandardShardingStrategyConfiguration strategyConfig = (StandardShardingStrategyConfiguration) tableShardingStrategy; + algorithmName = "standard"; + shardingColumn = strategyConfig.getShardingColumn(); + shardingAlgorithmName = strategyConfig.getShardingAlgorithmName(); + } else if (tableShardingStrategy instanceof ComplexShardingStrategyConfiguration) { + ComplexShardingStrategyConfiguration strategyConfig = (ComplexShardingStrategyConfiguration) tableShardingStrategy; + algorithmName = "complex"; + shardingColumn = strategyConfig.getShardingColumns(); + shardingAlgorithmName = strategyConfig.getShardingAlgorithmName(); + } else if (tableShardingStrategy instanceof HintShardingStrategyConfiguration) { + HintShardingStrategyConfiguration strategyConfig = (HintShardingStrategyConfiguration) tableShardingStrategy; + algorithmName = "hint"; + shardingAlgorithmName = strategyConfig.getShardingAlgorithmName(); + } else if (tableShardingStrategy instanceof NoneShardingStrategyConfiguration) { + algorithmName = "none"; + } + if (!Strings.isNullOrEmpty(algorithmName)) { + result.append(indent(4)).append(algorithmName).append(COLON_NEWLINE); + } + if (!Strings.isNullOrEmpty(shardingColumn)) { + result.append(indent(5)).append("shardingColumn").append(COLON_SPACE).append(shardingColumn).append(NEWLINE); + } + if (!Strings.isNullOrEmpty(shardingAlgorithmName)) { + result.append(indent(5)).append("shardingAlgorithmName").append(COLON_SPACE).append(shardingAlgorithmName).append(NEWLINE); + } + if (null == keyGenerateStrategy) { + return; + } + result.append(indent(3)).append("keyGenerateStrategy").append(COLON_NEWLINE); + result.append(indent(4)).append("column").append(COLON_SPACE).append(keyGenerateStrategy.getColumn()).append(NEWLINE); + result.append(indent(4)).append("keyGeneratorName").append(COLON_SPACE).append(keyGenerateStrategy.getKeyGeneratorName()).append(NEWLINE); + } + + private void getBindingTablesConfig(final ShardingRuleConfiguration ruleConfig, final StringBuilder result) { + if (ruleConfig.getBindingTableGroups().isEmpty()) { + return; + } + result.append(INDENT).append("bindingTables").append(COLON_NEWLINE); + result.append(indent(2)).append("-").append(SPACE).append(String.join(",", ruleConfig.getBindingTableGroups())).append(NEWLINE); + } + + private void getDefaultDatabaseStrategyConfig(final ShardingRuleConfiguration ruleConfig, final StringBuilder result) { + if (null == ruleConfig.getDefaultDatabaseShardingStrategy()) { + return; + } + result.append(INDENT).append("defaultDatabaseStrategy").append(COLON_NEWLINE); + getCommonDefaultStrategyConfig(ruleConfig.getDefaultDatabaseShardingStrategy(), result); + } + + private void getDefaultTableStrategyConfig(final ShardingRuleConfiguration ruleConfig, final StringBuilder result) { + if (null == ruleConfig.getDefaultTableShardingStrategy()) { + return; + } + result.append(INDENT).append("defaultTableStrategy").append(COLON_NEWLINE); + getCommonDefaultStrategyConfig(ruleConfig.getDefaultTableShardingStrategy(), result); + } + + private void getShardingAlgorithmsConfig(final ShardingRuleConfiguration ruleConfig, final StringBuilder result) { + if (ruleConfig.getShardingAlgorithms().isEmpty()) { + return; + } + result.append(INDENT).append("shardingAlgorithms").append(COLON_NEWLINE); + getAlgorithmConfig(ruleConfig.getShardingAlgorithms(), result); + } + + private void getKeyGeneratorsConfig(final ShardingRuleConfiguration ruleConfig, final StringBuilder result) { + if (ruleConfig.getKeyGenerators().isEmpty()) { + return; + } + result.append(INDENT).append("keyGenerators").append(COLON_NEWLINE); + getAlgorithmConfig(ruleConfig.getKeyGenerators(), result); + } + + private void getScalingConfig(final ShardingRuleConfiguration ruleConfig, final StringBuilder result) { + if (Strings.isNullOrEmpty(ruleConfig.getScalingName())) { + return; + } + result.append(INDENT).append("scalingName").append(COLON_SPACE).append(ruleConfig.getScalingName()).append(NEWLINE); + if (ruleConfig.getScaling().isEmpty()) { + return; + } + result.append(INDENT).append("scaling").append(COLON_NEWLINE); + for (Map.Entry<String, OnRuleAlteredActionConfiguration> each : ruleConfig.getScaling().entrySet()) { + OnRuleAlteredActionConfiguration current = each.getValue(); + result.append(indent(2)).append(each.getKey()).append(COLON_NEWLINE); + if (null != current) { + getScalingInputOrOutputConfig("input", current.getInput().getWorkerThread(), current.getInput().getBatchSize(), current.getInput().getRateLimiter(), result); + getScalingInputOrOutputConfig("output", current.getOutput().getWorkerThread(), current.getOutput().getBatchSize(), current.getOutput().getRateLimiter(), result); + getCommonScalingItemConfig("streamChannel", current.getStreamChannel(), result); + getCommonScalingItemConfig("completionDetector", current.getCompletionDetector(), result); + getCommonScalingItemConfig("dataConsistencyChecker", current.getDataConsistencyChecker(), result); + } + } + } + + private void getScalingInputOrOutputConfig(final String itemName, final int workerThread, final int batchSize, + final ShardingSphereAlgorithmConfiguration rateLimiterConfig, final StringBuilder result) { + result.append(indent(3)).append(itemName).append(COLON_NEWLINE); + result.append(indent(4)).append("workerThread").append(COLON_SPACE).append(workerThread).append(NEWLINE); + result.append(indent(4)).append("batchSize").append(COLON_SPACE).append(batchSize).append(NEWLINE); + result.append(indent(4)).append("rateLimiter").append(COLON_NEWLINE); + result.append(indent(5)).append("type").append(COLON_SPACE).append(rateLimiterConfig.getType()).append(NEWLINE); + if (null != rateLimiterConfig.getProps() && !rateLimiterConfig.getProps().isEmpty()) { + result.append(indent(5)).append("props").append(COLON_NEWLINE); + for (Map.Entry<Object, Object> each : rateLimiterConfig.getProps().entrySet()) { + result.append(indent(6)).append(each.getKey()).append(COLON_SPACE).append(each.getValue()).append(NEWLINE); + } + } + } + + private void getCommonScalingItemConfig(final String itemName, final ShardingSphereAlgorithmConfiguration itemConfig, final StringBuilder result) { + result.append(indent(3)).append(itemName).append(COLON_NEWLINE); + result.append(indent(4)).append("type").append(COLON_SPACE).append(itemConfig.getType()).append(NEWLINE); + if (null != itemConfig.getProps() && !itemConfig.getProps().isEmpty()) { + result.append(indent(4)).append("props").append(COLON_NEWLINE); + for (Map.Entry<Object, Object> each : itemConfig.getProps().entrySet()) { + result.append(indent(5)).append(each.getKey()).append(COLON_SPACE).append(each.getValue()).append(NEWLINE); + } + } + } + + private void getAlgorithmConfig(final Map<String, ShardingSphereAlgorithmConfiguration> algorithmMap, final StringBuilder result) { + for (Map.Entry<String, ShardingSphereAlgorithmConfiguration> each : algorithmMap.entrySet()) { + result.append(indent(2)).append(each.getKey()).append(COLON_NEWLINE); + result.append(indent(3)).append("type").append(COLON_SPACE).append(each.getValue().getType()).append(NEWLINE); + if (null != each.getValue().getProps() && !each.getValue().getProps().isEmpty()) { + result.append(indent(3)).append("props").append(COLON_NEWLINE); + for (Map.Entry<Object, Object> each1 : each.getValue().getProps().entrySet()) { + result.append(indent(4)).append(each1.getKey()).append(COLON_SPACE).append(each1.getValue()).append(NEWLINE); + } + } + } + } + + private void getCommonDefaultStrategyConfig(final ShardingStrategyConfiguration ruleConfig, final StringBuilder result) { + if (ruleConfig instanceof StandardShardingStrategyConfiguration) { + StandardShardingStrategyConfiguration strategyConfig = (StandardShardingStrategyConfiguration) ruleConfig; + result.append(indent(2)).append("standard").append(COLON_NEWLINE); + result.append(indent(3)).append("shardingColumn").append(COLON_SPACE).append(strategyConfig.getShardingColumn()).append(NEWLINE); + result.append(indent(3)).append("shardingAlgorithmName").append(COLON_SPACE).append(strategyConfig.getShardingAlgorithmName()).append(NEWLINE); + } else if (ruleConfig instanceof ComplexShardingStrategyConfiguration) { + ComplexShardingStrategyConfiguration strategyConfig = (ComplexShardingStrategyConfiguration) ruleConfig; + result.append(indent(2)).append("complex").append(COLON_NEWLINE); + result.append(indent(3)).append("shardingColumn").append(COLON_SPACE).append(strategyConfig.getShardingColumns()).append(NEWLINE); Review comment: Please alse define these magic numbers as variables. -- This is an automated message from the Apache Git Service. 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