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DuckDBProvider.java
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package sqlancer.duckdb;
import java.io.File;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.sql.Statement;
import com.google.auto.service.AutoService;
import sqlancer.AbstractAction;
import sqlancer.DatabaseProvider;
import sqlancer.IgnoreMeException;
import sqlancer.MainOptions;
import sqlancer.Randomly;
import sqlancer.SQLConnection;
import sqlancer.SQLGlobalState;
import sqlancer.SQLProviderAdapter;
import sqlancer.StatementExecutor;
import sqlancer.common.query.ExpectedErrors;
import sqlancer.common.query.SQLQueryAdapter;
import sqlancer.common.query.SQLQueryProvider;
import sqlancer.duckdb.DuckDBProvider.DuckDBGlobalState;
import sqlancer.duckdb.gen.DuckDBDeleteGenerator;
import sqlancer.duckdb.gen.DuckDBIndexGenerator;
import sqlancer.duckdb.gen.DuckDBInsertGenerator;
import sqlancer.duckdb.gen.DuckDBRandomQuerySynthesizer;
import sqlancer.duckdb.gen.DuckDBTableGenerator;
import sqlancer.duckdb.gen.DuckDBUpdateGenerator;
import sqlancer.duckdb.gen.DuckDBViewGenerator;
@AutoService(DatabaseProvider.class)
public class DuckDBProvider extends SQLProviderAdapter<DuckDBGlobalState, DuckDBOptions> {
public DuckDBProvider() {
super(DuckDBGlobalState.class, DuckDBOptions.class);
}
public enum Action implements AbstractAction<DuckDBGlobalState> {
INSERT(DuckDBInsertGenerator::getQuery), //
CREATE_INDEX(DuckDBIndexGenerator::getQuery), //
VACUUM((g) -> new SQLQueryAdapter("VACUUM;")), //
ANALYZE((g) -> new SQLQueryAdapter("ANALYZE;")), //
DELETE(DuckDBDeleteGenerator::generate), //
UPDATE(DuckDBUpdateGenerator::getQuery), //
CREATE_VIEW(DuckDBViewGenerator::generate), //
EXPLAIN((g) -> {
ExpectedErrors errors = new ExpectedErrors();
DuckDBErrors.addExpressionErrors(errors);
DuckDBErrors.addGroupByErrors(errors);
return new SQLQueryAdapter(
"EXPLAIN " + DuckDBToStringVisitor
.asString(DuckDBRandomQuerySynthesizer.generateSelect(g, Randomly.smallNumber() + 1)),
errors);
});
private final SQLQueryProvider<DuckDBGlobalState> sqlQueryProvider;
Action(SQLQueryProvider<DuckDBGlobalState> sqlQueryProvider) {
this.sqlQueryProvider = sqlQueryProvider;
}
@Override
public SQLQueryAdapter getQuery(DuckDBGlobalState state) throws Exception {
return sqlQueryProvider.getQuery(state);
}
}
private static int mapActions(DuckDBGlobalState globalState, Action a) {
Randomly r = globalState.getRandomly();
switch (a) {
case INSERT:
return r.getInteger(0, globalState.getOptions().getMaxNumberInserts());
case CREATE_INDEX:
if (!globalState.getDbmsSpecificOptions().testIndexes) {
return 0;
}
// fall through
case UPDATE:
return r.getInteger(0, globalState.getDbmsSpecificOptions().maxNumUpdates + 1);
case VACUUM: // seems to be ignored
case ANALYZE: // seems to be ignored
case EXPLAIN:
return r.getInteger(0, 2);
case DELETE:
return r.getInteger(0, globalState.getDbmsSpecificOptions().maxNumDeletes + 1);
case CREATE_VIEW:
return r.getInteger(0, globalState.getDbmsSpecificOptions().maxNumViews + 1);
default:
throw new AssertionError(a);
}
}
public static class DuckDBGlobalState extends SQLGlobalState<DuckDBOptions, DuckDBSchema> {
@Override
protected DuckDBSchema readSchema() throws SQLException {
return DuckDBSchema.fromConnection(getConnection(), getDatabaseName());
}
}
@Override
public void generateDatabase(DuckDBGlobalState globalState) throws Exception {
for (int i = 0; i < Randomly.fromOptions(1, 2); i++) {
boolean success;
do {
SQLQueryAdapter qt = new DuckDBTableGenerator().getQuery(globalState);
success = globalState.executeStatement(qt);
} while (!success);
}
if (globalState.getSchema().getDatabaseTables().isEmpty()) {
throw new IgnoreMeException(); // TODO
}
StatementExecutor<DuckDBGlobalState, Action> se = new StatementExecutor<>(globalState, Action.values(),
DuckDBProvider::mapActions, (q) -> {
if (globalState.getSchema().getDatabaseTables().isEmpty()) {
throw new IgnoreMeException();
}
});
se.executeStatements();
}
public void tryDeleteFile(String fname) {
try {
File f = new File(fname);
f.delete();
} catch (Exception e) {
}
}
public void tryDeleteDatabase(String dbpath) {
if (dbpath.equals("") || dbpath.equals(":memory:")) {
return;
}
tryDeleteFile(dbpath);
tryDeleteFile(dbpath + ".wal");
}
@Override
public SQLConnection createDatabase(DuckDBGlobalState globalState) throws SQLException {
String databaseFile = System.getProperty("duckdb.database.file", "");
String url = "jdbc:duckdb:" + databaseFile;
tryDeleteDatabase(databaseFile);
MainOptions options = globalState.getOptions();
if (!(options.isDefaultUsername() && options.isDefaultPassword())) {
throw new AssertionError("DuckDB doesn't support credentials (username/password)");
}
Connection conn = DriverManager.getConnection(url);
Statement stmt = conn.createStatement();
stmt.execute("PRAGMA checkpoint_threshold='1 byte';");
stmt.close();
return new SQLConnection(conn);
}
@Override
public String getDBMSName() {
return "duckdb";
}
}