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package sqlancer.postgres;
import java.io.FileWriter;
import java.io.IOException;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.Arrays;
import java.util.List;
import java.util.stream.Collectors;
import sqlancer.AbstractAction;
import sqlancer.CompositeTestOracle;
import sqlancer.DatabaseProvider;
import sqlancer.GlobalState;
import sqlancer.IgnoreMeException;
import sqlancer.Main.QueryManager;
import sqlancer.Main.StateLogger;
import sqlancer.MainOptions;
import sqlancer.Query;
import sqlancer.QueryAdapter;
import sqlancer.QueryProvider;
import sqlancer.Randomly;
import sqlancer.StateToReproduce;
import sqlancer.StateToReproduce.PostgresStateToReproduce;
import sqlancer.StatementExecutor;
import sqlancer.TestOracle;
import sqlancer.postgres.PostgresSchema.PostgresColumn;
import sqlancer.postgres.PostgresSchema.PostgresTable;
import sqlancer.postgres.ast.PostgresExpression;
import sqlancer.postgres.gen.PostgresAlterTableGenerator;
import sqlancer.postgres.gen.PostgresAnalyzeGenerator;
import sqlancer.postgres.gen.PostgresClusterGenerator;
import sqlancer.postgres.gen.PostgresCommentGenerator;
import sqlancer.postgres.gen.PostgresDeleteGenerator;
import sqlancer.postgres.gen.PostgresDiscardGenerator;
import sqlancer.postgres.gen.PostgresDropIndexGenerator;
import sqlancer.postgres.gen.PostgresIndexGenerator;
import sqlancer.postgres.gen.PostgresInsertGenerator;
import sqlancer.postgres.gen.PostgresNotifyGenerator;
import sqlancer.postgres.gen.PostgresQueryCatalogGenerator;
import sqlancer.postgres.gen.PostgresReindexGenerator;
import sqlancer.postgres.gen.PostgresSequenceGenerator;
import sqlancer.postgres.gen.PostgresSetGenerator;
import sqlancer.postgres.gen.PostgresStatisticsGenerator;
import sqlancer.postgres.gen.PostgresTableGenerator;
import sqlancer.postgres.gen.PostgresTransactionGenerator;
import sqlancer.postgres.gen.PostgresTruncateGenerator;
import sqlancer.postgres.gen.PostgresUpdateGenerator;
import sqlancer.postgres.gen.PostgresVacuumGenerator;
import sqlancer.postgres.gen.PostgresViewGenerator;
import sqlancer.sqlite3.gen.SQLite3Common;
// EXISTS
// IN
public final class PostgresProvider implements DatabaseProvider<PostgresGlobalState, PostgresOptions> {
public static boolean generateOnlyKnown = false;
private PostgresGlobalState globalState;
public enum Action implements AbstractAction<PostgresGlobalState> {
ANALYZE(PostgresAnalyzeGenerator::create), //
ALTER_TABLE(g -> PostgresAlterTableGenerator.create(g.getSchema().getRandomTable(t -> !t.isView()), g,
generateOnlyKnown)), //
CLUSTER(PostgresClusterGenerator::create), //
COMMIT(g -> {
Query query;
if (Randomly.getBoolean()) {
query = new QueryAdapter("COMMIT") {
@Override
public boolean couldAffectSchema() {
return true;
}
};
} else if (Randomly.getBoolean()) {
query = PostgresTransactionGenerator.executeBegin();
} else {
query = new QueryAdapter("ROLLBACK") {
@Override
public boolean couldAffectSchema() {
return true;
}
};
}
return query;
}), //
CREATE_STATISTICS(PostgresStatisticsGenerator::insert), //
DROP_STATISTICS(PostgresStatisticsGenerator::remove), //
DELETE(PostgresDeleteGenerator::create), //
DISCARD(PostgresDiscardGenerator::create), //
DROP_INDEX(PostgresDropIndexGenerator::create), //
INSERT(PostgresInsertGenerator::insert), //
UPDATE(PostgresUpdateGenerator::create), //
TRUNCATE(PostgresTruncateGenerator::create), //
VACUUM(PostgresVacuumGenerator::create), //
REINDEX(PostgresReindexGenerator::create), //
SET(PostgresSetGenerator::create), //
CREATE_INDEX(PostgresIndexGenerator::generate), //
SET_CONSTRAINTS((g) -> {
StringBuilder sb = new StringBuilder();
sb.append("SET CONSTRAINTS ALL ");
sb.append(Randomly.fromOptions("DEFERRED", "IMMEDIATE"));
return new QueryAdapter(sb.toString());
}), //
RESET_ROLE((g) -> new QueryAdapter("RESET ROLE")), //
COMMENT_ON(PostgresCommentGenerator::generate), //
RESET((g) -> new QueryAdapter(
"RESET ALL") /*
* https://www.postgresql.org/docs/devel/sql-reset.html TODO: also configuration parameter
*/), //
NOTIFY(PostgresNotifyGenerator::createNotify), //
LISTEN((g) -> PostgresNotifyGenerator.createListen()), //
UNLISTEN((g) -> PostgresNotifyGenerator.createUnlisten()), //
CREATE_SEQUENCE(PostgresSequenceGenerator::createSequence), //
CREATE_VIEW(PostgresViewGenerator::create), //
QUERY_CATALOG((g) -> PostgresQueryCatalogGenerator.query());
private final QueryProvider<PostgresGlobalState> queryProvider;
Action(QueryProvider<PostgresGlobalState> queryProvider) {
this.queryProvider = queryProvider;
}
@Override
public Query getQuery(PostgresGlobalState state) throws SQLException {
return queryProvider.getQuery(state);
}
}
private static int mapActions(PostgresGlobalState globalState, Action a) {
Randomly r = globalState.getRandomly();
int nrPerformed;
switch (a) {
case CREATE_INDEX:
case CLUSTER:
nrPerformed = r.getInteger(0, 3);
break;
case CREATE_STATISTICS:
nrPerformed = r.getInteger(0, 5);
break;
case DISCARD:
case DROP_INDEX:
nrPerformed = r.getInteger(0, 5);
break;
case COMMIT:
nrPerformed = r.getInteger(0, 0);
break;
case ALTER_TABLE:
nrPerformed = r.getInteger(0, 5);
break;
case REINDEX:
case RESET:
nrPerformed = r.getInteger(0, 3);
break;
case DELETE:
case RESET_ROLE:
case SET:
case QUERY_CATALOG:
nrPerformed = r.getInteger(0, 5);
break;
case ANALYZE:
nrPerformed = r.getInteger(0, 3);
break;
case VACUUM:
case SET_CONSTRAINTS:
case COMMENT_ON:
case NOTIFY:
case LISTEN:
case UNLISTEN:
case CREATE_SEQUENCE:
case DROP_STATISTICS:
case TRUNCATE:
nrPerformed = r.getInteger(0, 2);
break;
case CREATE_VIEW:
nrPerformed = r.getInteger(0, 2);
break;
case UPDATE:
nrPerformed = r.getInteger(0, 10);
break;
case INSERT:
nrPerformed = r.getInteger(0, globalState.getOptions().getMaxNumberInserts());
break;
default:
throw new AssertionError(a);
}
return nrPerformed;
}
@Override
public void generateAndTestDatabase(PostgresGlobalState globalState) throws SQLException {
MainOptions options = globalState.getOptions();
StateLogger logger = globalState.getLogger();
StateToReproduce state = globalState.getState();
String databaseName = globalState.getDatabaseName();
Connection con = globalState.getConnection();
QueryManager manager = globalState.getManager();
if (options.logEachSelect()) {
logger.writeCurrent(state);
}
globalState.setSchema(PostgresSchema.fromConnection(con, databaseName));
while (globalState.getSchema().getDatabaseTables().size() < 1) {
try {
String tableName = SQLite3Common.createTableName(globalState.getSchema().getDatabaseTables().size());
Query createTable = PostgresTableGenerator.generate(tableName, globalState.getSchema(),
generateOnlyKnown, globalState);
if (options.logEachSelect()) {
logger.writeCurrent(createTable.getQueryString());
}
manager.execute(createTable);
globalState.setSchema(PostgresSchema.fromConnection(con, databaseName));
} catch (IgnoreMeException e) {
}
}
StatementExecutor<PostgresGlobalState, Action> se = new StatementExecutor<>(globalState, Action.values(),
PostgresProvider::mapActions, (q) -> {
if (q.couldAffectSchema()) {
globalState.setSchema(PostgresSchema.fromConnection(con, databaseName));
}
if (globalState.getSchema().getDatabaseTables().isEmpty()) {
throw new IgnoreMeException();
}
});
// TODO: transactions broke during refactoring
// catch (Throwable t) {
// if (t.getMessage().contains("current transaction is aborted")) {
// manager.execute(new QueryAdapter("ABORT"));
// globalState.setSchema(PostgresSchema.fromConnection(con, databaseName));
// } else {
// System.err.println(query.getQueryString());
// throw t;
// }
// }
se.executeStatements();
manager.incrementCreateDatabase();
manager.execute(new QueryAdapter("COMMIT"));
globalState.setSchema(PostgresSchema.fromConnection(con, databaseName));
manager.execute(new QueryAdapter("SET SESSION statement_timeout = 5000;\n"));
List<TestOracle> oracles = globalState.getDmbsSpecificOptions().oracle.stream().map(o -> {
try {
return o.create(globalState);
} catch (SQLException e1) {
throw new AssertionError(e1);
}
}).collect(Collectors.toList());
CompositeTestOracle oracle = new CompositeTestOracle(oracles);
for (int i = 0; i < options.getNrQueries(); i++) {
try {
oracle.check();
} catch (IgnoreMeException e) {
continue;
}
manager.incrementSelectQueryCount();
}
}
@Override
public Connection createDatabase(GlobalState<?> globalState) throws SQLException {
String url = "jdbc:postgresql://localhost:5432/test";
String databaseName = globalState.getDatabaseName();
Connection con = DriverManager.getConnection(url, globalState.getOptions().getUserName(),
globalState.getOptions().getPassword());
globalState.getState().statements.add(new QueryAdapter("\\c test;"));
globalState.getState().statements.add(new QueryAdapter("DROP DATABASE IF EXISTS " + databaseName));
String createDatabaseCommand = getCreateDatabaseCommand(databaseName, con);
globalState.getState().statements.add(new QueryAdapter(createDatabaseCommand));
globalState.getState().statements.add(new QueryAdapter("\\c " + databaseName));
try (Statement s = con.createStatement()) {
s.execute("DROP DATABASE IF EXISTS " + databaseName);
}
try (Statement s = con.createStatement()) {
s.execute(createDatabaseCommand);
}
con.close();
con = DriverManager.getConnection("jdbc:postgresql://localhost:5432/" + databaseName,
globalState.getOptions().getUserName(), globalState.getOptions().getPassword());
List<String> statements = Arrays.asList(
// "CREATE EXTENSION IF NOT EXISTS btree_gin;",
// "CREATE EXTENSION IF NOT EXISTS btree_gist;", // TODO: undefined symbol: elog_start
"CREATE EXTENSION IF NOT EXISTS pg_prewarm;", "SET max_parallel_workers_per_gather=16");
for (String s : statements) {
QueryAdapter query = new QueryAdapter(s);
globalState.getState().statements.add(query);
query.execute(con);
}
// new QueryAdapter("set jit_above_cost = 0; set jit_inline_above_cost = 0; set jit_optimize_above_cost =
// 0;").execute(con);
return con;
}
private String getCreateDatabaseCommand(String databaseName, Connection con) {
StringBuilder sb = new StringBuilder();
sb.append("CREATE DATABASE " + databaseName + " ");
if (Randomly.getBoolean()) {
if (Randomly.getBoolean()) {
sb.append("WITH ENCODING '");
sb.append(Randomly.fromOptions("utf8"));
sb.append("' ");
}
for (String lc : Arrays.asList("LC_COLLATE", "LC_CTYPE")) {
if (Randomly.getBoolean()) {
globalState = new PostgresGlobalState();
globalState.setConnection(con);
sb.append(String.format(" %s = '%s'", lc, Randomly.fromList(globalState.getCollates())));
}
}
sb.append(" TEMPLATE template0");
}
return sb.toString();
}
@Override
public String getDBMSName() {
return "postgres";
}
@Override
public void printDatabaseSpecificState(FileWriter writer, StateToReproduce state) {
StringBuilder sb = new StringBuilder();
PostgresStateToReproduce specificState = (PostgresStateToReproduce) state;
if (specificState.getRandomRowValues() != null) {
List<PostgresColumn> columnList = specificState.getRandomRowValues().keySet().stream()
.collect(Collectors.toList());
List<PostgresTable> tableList = columnList.stream().map(c -> c.getTable()).distinct().sorted()
.collect(Collectors.toList());
for (PostgresTable t : tableList) {
sb.append("-- " + t.getName() + "\n");
List<PostgresColumn> columnsForTable = columnList.stream().filter(c -> c.getTable().equals(t))
.collect(Collectors.toList());
for (PostgresColumn c : columnsForTable) {
sb.append("--\t");
sb.append(c);
sb.append("=");
sb.append(specificState.getRandomRowValues().get(c));
sb.append("\n");
}
}
sb.append("expected values: \n");
PostgresExpression whereClause = ((PostgresStateToReproduce) state).getWhereClause();
if (whereClause != null) {
sb.append(PostgresVisitor.asExpectedValues(whereClause).replace("\n", "\n-- "));
}
}
try {
writer.write(sb.toString());
writer.flush();
} catch (IOException e) {
throw new AssertionError();
}
}
@Override
public StateToReproduce getStateToReproduce(String databaseName) {
return new PostgresStateToReproduce(databaseName);
}
@Override
public PostgresGlobalState generateGlobalState() {
return new PostgresGlobalState();
}
@Override
public PostgresOptions getCommand() {
return new PostgresOptions();
}
}