strongduanmu commented on code in PR #21424: URL: https://github.com/apache/shardingsphere/pull/21424#discussion_r990865462
########## features/sharding/core/src/main/java/org/apache/shardingsphere/sharding/metadata/data/ShardingStatisticsTableCollector.java: ########## @@ -0,0 +1,126 @@ +/* + * 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.sharding.metadata.data; + +import org.apache.shardingsphere.data.pipeline.spi.data.collector.ShardingSphereDataCollector; +import org.apache.shardingsphere.infra.database.type.DatabaseType; +import org.apache.shardingsphere.infra.database.type.dialect.MySQLDatabaseType; +import org.apache.shardingsphere.infra.database.type.dialect.OpenGaussDatabaseType; +import org.apache.shardingsphere.infra.database.type.dialect.PostgreSQLDatabaseType; +import org.apache.shardingsphere.infra.datanode.DataNode; +import org.apache.shardingsphere.infra.metadata.data.ShardingSphereData; +import org.apache.shardingsphere.infra.metadata.data.ShardingSphereRowData; +import org.apache.shardingsphere.infra.metadata.data.ShardingSphereTableData; +import org.apache.shardingsphere.infra.rule.ShardingSphereRule; +import org.apache.shardingsphere.sharding.rule.ShardingRule; +import org.apache.shardingsphere.sharding.rule.TableRule; + +import javax.sql.DataSource; +import java.math.BigDecimal; +import java.sql.Connection; +import java.sql.ResultSet; +import java.sql.SQLException; +import java.sql.Statement; +import java.util.Collection; +import java.util.LinkedList; +import java.util.List; +import java.util.Map; +import java.util.Optional; + +/** + * Sharding statistics table data collector. + */ +public class ShardingStatisticsTableCollector implements ShardingSphereDataCollector { + + private static final String SHARDING_STATISTICS_TABLE = "sharding_statistics_table"; + + private static final String SHARDING_SPHERE = "shardingsphere"; + + private static final String MYSQL_TABLE_ROWS_AND_DATA_LENGTH = "SELECT TABLE_ROWS, DATA_LENGTH FROM information_schema.TABLES WHERE TABLE_SCHEMA = '%s' AND TABLE_NAME = '%s'"; + + @Override + public void collectShardingSphereData(final ShardingSphereData shardingSphereData, final String databaseName, final Collection<ShardingSphereRule> rules, Review Comment: Do you think rename this method to collect is better? ########## features/sharding/core/src/main/java/org/apache/shardingsphere/sharding/metadata/data/ShardingStatisticsTableCollector.java: ########## @@ -0,0 +1,126 @@ +/* + * 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.sharding.metadata.data; + +import org.apache.shardingsphere.data.pipeline.spi.data.collector.ShardingSphereDataCollector; +import org.apache.shardingsphere.infra.database.type.DatabaseType; +import org.apache.shardingsphere.infra.database.type.dialect.MySQLDatabaseType; +import org.apache.shardingsphere.infra.database.type.dialect.OpenGaussDatabaseType; +import org.apache.shardingsphere.infra.database.type.dialect.PostgreSQLDatabaseType; +import org.apache.shardingsphere.infra.datanode.DataNode; +import org.apache.shardingsphere.infra.metadata.data.ShardingSphereData; +import org.apache.shardingsphere.infra.metadata.data.ShardingSphereRowData; +import org.apache.shardingsphere.infra.metadata.data.ShardingSphereTableData; +import org.apache.shardingsphere.infra.rule.ShardingSphereRule; +import org.apache.shardingsphere.sharding.rule.ShardingRule; +import org.apache.shardingsphere.sharding.rule.TableRule; + +import javax.sql.DataSource; +import java.math.BigDecimal; +import java.sql.Connection; +import java.sql.ResultSet; +import java.sql.SQLException; +import java.sql.Statement; +import java.util.Collection; +import java.util.LinkedList; +import java.util.List; +import java.util.Map; +import java.util.Optional; + +/** + * Sharding statistics table data collector. + */ +public class ShardingStatisticsTableCollector implements ShardingSphereDataCollector { + + private static final String SHARDING_STATISTICS_TABLE = "sharding_statistics_table"; + + private static final String SHARDING_SPHERE = "shardingsphere"; + + private static final String MYSQL_TABLE_ROWS_AND_DATA_LENGTH = "SELECT TABLE_ROWS, DATA_LENGTH FROM information_schema.TABLES WHERE TABLE_SCHEMA = '%s' AND TABLE_NAME = '%s'"; + + @Override + public void collectShardingSphereData(final ShardingSphereData shardingSphereData, final String databaseName, final Collection<ShardingSphereRule> rules, + final Map<String, DataSource> dataSources, final DatabaseType databaseType) throws SQLException { + ShardingRule shardingRule = null; + for (ShardingSphereRule each : rules) { Review Comment: Can we use common findSingleRule method? ########## features/sharding/core/src/main/java/org/apache/shardingsphere/sharding/metadata/data/ShardingStatisticsTableCollector.java: ########## @@ -0,0 +1,126 @@ +/* + * 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.sharding.metadata.data; + +import org.apache.shardingsphere.data.pipeline.spi.data.collector.ShardingSphereDataCollector; +import org.apache.shardingsphere.infra.database.type.DatabaseType; +import org.apache.shardingsphere.infra.database.type.dialect.MySQLDatabaseType; +import org.apache.shardingsphere.infra.database.type.dialect.OpenGaussDatabaseType; +import org.apache.shardingsphere.infra.database.type.dialect.PostgreSQLDatabaseType; +import org.apache.shardingsphere.infra.datanode.DataNode; +import org.apache.shardingsphere.infra.metadata.data.ShardingSphereData; +import org.apache.shardingsphere.infra.metadata.data.ShardingSphereRowData; +import org.apache.shardingsphere.infra.metadata.data.ShardingSphereTableData; +import org.apache.shardingsphere.infra.rule.ShardingSphereRule; +import org.apache.shardingsphere.sharding.rule.ShardingRule; +import org.apache.shardingsphere.sharding.rule.TableRule; + +import javax.sql.DataSource; +import java.math.BigDecimal; +import java.sql.Connection; +import java.sql.ResultSet; +import java.sql.SQLException; +import java.sql.Statement; +import java.util.Collection; +import java.util.LinkedList; +import java.util.List; +import java.util.Map; +import java.util.Optional; + +/** + * Sharding statistics table data collector. + */ +public class ShardingStatisticsTableCollector implements ShardingSphereDataCollector { + + private static final String SHARDING_STATISTICS_TABLE = "sharding_statistics_table"; + + private static final String SHARDING_SPHERE = "shardingsphere"; + + private static final String MYSQL_TABLE_ROWS_AND_DATA_LENGTH = "SELECT TABLE_ROWS, DATA_LENGTH FROM information_schema.TABLES WHERE TABLE_SCHEMA = '%s' AND TABLE_NAME = '%s'"; + + @Override + public void collectShardingSphereData(final ShardingSphereData shardingSphereData, final String databaseName, final Collection<ShardingSphereRule> rules, + final Map<String, DataSource> dataSources, final DatabaseType databaseType) throws SQLException { + ShardingRule shardingRule = null; + for (ShardingSphereRule each : rules) { + if (each instanceof ShardingRule) { + shardingRule = (ShardingRule) each; + break; + } + } + if (null == shardingRule) { + return; + } + ShardingSphereTableData tableData = new ShardingSphereTableData(SHARDING_STATISTICS_TABLE); Review Comment: Please extract this logic to a private method. -- This is an automated message from the Apache Git Service. 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