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Refactor DriverExecutor #31418

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merged 7 commits into from
May 27, 2024
Merged

Refactor DriverExecutor #31418

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61b7207
Add ShardingSphereConnection.getTrafficInstanceId()
terrymanu May 27, 2024
f66e0de
Refactor DriverExecutor
terrymanu May 27, 2024
28350a5
Refactor DriverExecutor
terrymanu May 27, 2024
bd9a507
Refactor DriverExecutor
terrymanu May 27, 2024
1482d9d
Refactor DriverExecutor
terrymanu May 27, 2024
e08063b
Refactor DriverExecutor
terrymanu May 27, 2024
f1cdbfb
Refactor DriverExecutor
terrymanu May 27, 2024
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5 changes: 5 additions & 0 deletions ...apache/shardingsphere/infra/executor/sql/prepare/driver/DriverExecutionPrepareEngine.java
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Original file line number Diff line number Diff line change
Expand Up @@ -17,6 +17,7 @@

package org.apache.shardingsphere.infra.executor.sql.prepare.driver;

import lombok.Getter;
import org.apache.shardingsphere.infra.database.core.type.DatabaseType;
import org.apache.shardingsphere.infra.executor.kernel.model.ExecutionGroup;
import org.apache.shardingsphere.infra.executor.sql.context.ExecutionUnit;
Expand Down Expand Up @@ -45,6 +46,9 @@ public final class DriverExecutionPrepareEngine<T extends DriverExecutionUnit<?>
@SuppressWarnings("rawtypes")
private static final Map<String, SQLExecutionUnitBuilder> TYPE_TO_BUILDER_MAP = new ConcurrentHashMap<>(8, 1F);

@Getter
private final String type;

private final DatabaseConnectionManager<C> databaseConnectionManager;

private final ExecutorStatementManager<C, ?, ?> statementManager;
Expand All @@ -60,6 +64,7 @@ public DriverExecutionPrepareEngine(final String type, final int maxConnectionsS
final ExecutorStatementManager<C, ?, ?> statementManager, final StorageResourceOption option, final Collection<ShardingSphereRule> rules,
final Map<String, StorageUnit> storageUnits) {
super(maxConnectionsSizePerQuery, rules);
this.type = type;
this.databaseConnectionManager = databaseConnectionManager;
this.statementManager = statementManager;
this.option = option;
Expand Down
150 changes: 146 additions & 4 deletions jdbc/src/main/java/org/apache/shardingsphere/driver/executor/DriverExecutor.java
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Original file line number Diff line number Diff line change
Expand Up @@ -18,52 +18,194 @@
package org.apache.shardingsphere.driver.executor;

import lombok.Getter;
import org.apache.shardingsphere.driver.executor.callback.ExecuteQueryCallback;
import org.apache.shardingsphere.driver.executor.callback.impl.PreparedStatementExecuteQueryCallback;
import org.apache.shardingsphere.driver.executor.callback.impl.StatementExecuteQueryCallback;
import org.apache.shardingsphere.driver.jdbc.core.connection.ShardingSphereConnection;
import org.apache.shardingsphere.infra.database.core.type.DatabaseTypeRegistry;
import org.apache.shardingsphere.infra.executor.kernel.ExecutorEngine;
import org.apache.shardingsphere.infra.executor.sql.execute.engine.SQLExecutorExceptionHandler;
import org.apache.shardingsphere.infra.executor.sql.execute.engine.driver.jdbc.JDBCExecutionUnit;
import org.apache.shardingsphere.infra.executor.sql.execute.engine.driver.jdbc.JDBCExecutor;
import org.apache.shardingsphere.infra.executor.sql.execute.engine.raw.RawExecutor;
import org.apache.shardingsphere.infra.executor.sql.prepare.driver.DriverExecutionPrepareEngine;
import org.apache.shardingsphere.infra.executor.sql.prepare.driver.jdbc.JDBCDriverType;
import org.apache.shardingsphere.infra.metadata.ShardingSphereMetaData;
import org.apache.shardingsphere.infra.metadata.database.ShardingSphereDatabase;
import org.apache.shardingsphere.infra.session.query.QueryContext;
import org.apache.shardingsphere.mode.metadata.MetaDataContexts;
import org.apache.shardingsphere.sqlfederation.engine.SQLFederationEngine;
import org.apache.shardingsphere.sqlfederation.executor.context.SQLFederationContext;
import org.apache.shardingsphere.traffic.executor.TrafficExecutor;
import org.apache.shardingsphere.traffic.executor.TrafficExecutorCallback;
import org.apache.shardingsphere.traffic.rule.TrafficRule;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.Optional;

/**
* Driver executor.
*/
@Getter
public final class DriverExecutor implements AutoCloseable {

private final ShardingSphereConnection connection;

@Getter
private final DriverJDBCExecutor regularExecutor;

@Getter
private final RawExecutor rawExecutor;

private final TrafficExecutor trafficExecutor;

private final SQLFederationEngine sqlFederationEngine;

private final TrafficExecutor trafficExecutor;
private ExecuteType executeType = ExecuteType.REGULAR;

public DriverExecutor(final ShardingSphereConnection connection) {
this.connection = connection;
MetaDataContexts metaDataContexts = connection.getContextManager().getMetaDataContexts();
ExecutorEngine executorEngine = connection.getContextManager().getExecutorEngine();
JDBCExecutor jdbcExecutor = new JDBCExecutor(executorEngine, connection.getDatabaseConnectionManager().getConnectionContext());
regularExecutor = new DriverJDBCExecutor(connection.getDatabaseName(), connection.getContextManager(), jdbcExecutor);
rawExecutor = new RawExecutor(executorEngine, connection.getDatabaseConnectionManager().getConnectionContext());
ShardingSphereDatabase database = metaDataContexts.getMetaData().getDatabase(connection.getDatabaseName());
String schemaName = new DatabaseTypeRegistry(database.getProtocolType()).getDefaultSchemaName(connection.getDatabaseName());
sqlFederationEngine = new SQLFederationEngine(connection.getDatabaseName(), schemaName, metaDataContexts.getMetaData(), metaDataContexts.getStatistics(), jdbcExecutor);
trafficExecutor = new TrafficExecutor();
sqlFederationEngine = new SQLFederationEngine(connection.getDatabaseName(), schemaName, metaDataContexts.getMetaData(), metaDataContexts.getStatistics(), jdbcExecutor);
}

/**
* Close.
* Execute advance query.
*
* @param metaData meta data
* @param database database
* @param queryContext query context
* @param prepareEngine prepare engine
* @return result set
* @throws SQLException SQL exception
*/
public Optional<ResultSet> executeAdvanceQuery(final ShardingSphereMetaData metaData, final ShardingSphereDatabase database, final QueryContext queryContext,
final DriverExecutionPrepareEngine<JDBCExecutionUnit, Connection> prepareEngine) throws SQLException {
Optional<String> trafficInstanceId = connection.getTrafficInstanceId(metaData.getGlobalRuleMetaData().getSingleRule(TrafficRule.class), queryContext);
if (trafficInstanceId.isPresent()) {
TrafficExecutorCallback<ResultSet> trafficCallback = JDBCDriverType.STATEMENT.equals(prepareEngine.getType())
? Statement::executeQuery
: ((statement, sql) -> ((PreparedStatement) statement).executeQuery());
return Optional.of(trafficExecutor.execute(connection.getProcessId(), database.getName(), trafficInstanceId.get(), queryContext, prepareEngine, trafficCallback));
}
if (sqlFederationEngine.decide(queryContext.getSqlStatementContext(), queryContext.getParameters(), database, metaData.getGlobalRuleMetaData())) {
ExecuteQueryCallback sqlFederationCallback = JDBCDriverType.STATEMENT.equals(prepareEngine.getType())
? new StatementExecuteQueryCallback(database.getProtocolType(), database.getResourceMetaData(),
queryContext.getSqlStatementContext().getSqlStatement(), SQLExecutorExceptionHandler.isExceptionThrown())
: new PreparedStatementExecuteQueryCallback(database.getProtocolType(),
database.getResourceMetaData(), queryContext.getSqlStatementContext().getSqlStatement(), SQLExecutorExceptionHandler.isExceptionThrown());
return Optional.of(sqlFederationEngine.executeQuery(prepareEngine, sqlFederationCallback, new SQLFederationContext(false, queryContext, metaData, connection.getProcessId())));
}
return Optional.empty();
}

/**
* Execute advance update.
*
* @param metaData meta data
* @param database database
* @param queryContext query context
* @param prepareEngine prepare engine
* @return updated row count
* @throws SQLException SQL exception
*/
public Optional<Integer> executeAdvanceUpdate(final ShardingSphereMetaData metaData, final ShardingSphereDatabase database, final QueryContext queryContext,
final DriverExecutionPrepareEngine<JDBCExecutionUnit, Connection> prepareEngine) throws SQLException {
Optional<String> trafficInstanceId = connection.getTrafficInstanceId(metaData.getGlobalRuleMetaData().getSingleRule(TrafficRule.class), queryContext);
if (trafficInstanceId.isPresent()) {
return Optional.of(trafficExecutor.execute(connection.getProcessId(), database.getName(),
trafficInstanceId.get(), queryContext, prepareEngine, (statement, sql) -> ((PreparedStatement) statement).executeUpdate()));
}
return Optional.empty();
}

/**
* Execute advance update.
*
* @param metaData meta data
* @param database database
* @param queryContext query context
* @param prepareEngine prepare engine
* @param trafficCallback traffic callback
* @return updated row count
* @throws SQLException SQL exception
*/
public Optional<Integer> executeAdvanceUpdate(final ShardingSphereMetaData metaData, final ShardingSphereDatabase database, final QueryContext queryContext,
final DriverExecutionPrepareEngine<JDBCExecutionUnit, Connection> prepareEngine,
final TrafficExecutorCallback<Integer> trafficCallback) throws SQLException {
Optional<String> trafficInstanceId = connection.getTrafficInstanceId(metaData.getGlobalRuleMetaData().getSingleRule(TrafficRule.class), queryContext);
if (trafficInstanceId.isPresent()) {
return Optional.of(trafficExecutor.execute(connection.getProcessId(), database.getName(), trafficInstanceId.get(), queryContext, prepareEngine, trafficCallback));
}
return Optional.empty();
}

/**
* Execute advance.
*
* @param metaData meta data
* @param database database
* @param queryContext query context
* @param prepareEngine prepare engine
* @param trafficCallback traffic callback
* @return execute result
* @throws SQLException SQL exception
*/
public Optional<Boolean> executeAdvance(final ShardingSphereMetaData metaData, final ShardingSphereDatabase database,
final QueryContext queryContext, final DriverExecutionPrepareEngine<JDBCExecutionUnit, Connection> prepareEngine,
final TrafficExecutorCallback<Boolean> trafficCallback) throws SQLException {
Optional<String> trafficInstanceId = connection.getTrafficInstanceId(metaData.getGlobalRuleMetaData().getSingleRule(TrafficRule.class), queryContext);
if (trafficInstanceId.isPresent()) {
executeType = ExecuteType.TRAFFIC;
return Optional.of(trafficExecutor.execute(connection.getProcessId(), database.getName(), trafficInstanceId.get(), queryContext, prepareEngine, trafficCallback));
}
if (sqlFederationEngine.decide(queryContext.getSqlStatementContext(), queryContext.getParameters(), database, metaData.getGlobalRuleMetaData())) {
executeType = ExecuteType.FEDERATION;
ExecuteQueryCallback sqlFederationCallback = JDBCDriverType.STATEMENT.equals(prepareEngine.getType())
? new StatementExecuteQueryCallback(database.getProtocolType(), database.getResourceMetaData(),
queryContext.getSqlStatementContext().getSqlStatement(), SQLExecutorExceptionHandler.isExceptionThrown())
: new PreparedStatementExecuteQueryCallback(database.getProtocolType(), database.getResourceMetaData(),
queryContext.getSqlStatementContext().getSqlStatement(), SQLExecutorExceptionHandler.isExceptionThrown());
ResultSet resultSet = sqlFederationEngine.executeQuery(prepareEngine, sqlFederationCallback, new SQLFederationContext(false, queryContext, metaData, connection.getProcessId()));
return Optional.of(null != resultSet);
}
return Optional.empty();
}

/**
* Get advanced result set.
*
* @return advanced result set
*/
public Optional<ResultSet> getAdvancedResultSet() {
switch (executeType) {
case TRAFFIC:
return Optional.of(trafficExecutor.getResultSet());
case FEDERATION:
return Optional.of(sqlFederationEngine.getResultSet());
default:
return Optional.empty();
}
}

@Override
public void close() throws SQLException {
sqlFederationEngine.close();
trafficExecutor.close();
}

public enum ExecuteType {

TRAFFIC, FEDERATION, REGULAR
}
}
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