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YSQLProvider.java
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package sqlancer.yugabyte.ysql;
import java.net.URI;
import java.net.URISyntaxException;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.Arrays;
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.SQLProviderAdapter;
import sqlancer.StatementExecutor;
import sqlancer.common.DBMSCommon;
import sqlancer.common.query.SQLQueryAdapter;
import sqlancer.common.query.SQLQueryProvider;
import sqlancer.common.query.SQLancerResultSet;
import sqlancer.yugabyte.ysql.gen.YSQLAlterTableGenerator;
import sqlancer.yugabyte.ysql.gen.YSQLAnalyzeGenerator;
import sqlancer.yugabyte.ysql.gen.YSQLCommentGenerator;
import sqlancer.yugabyte.ysql.gen.YSQLDeleteGenerator;
import sqlancer.yugabyte.ysql.gen.YSQLDiscardGenerator;
import sqlancer.yugabyte.ysql.gen.YSQLDropIndexGenerator;
import sqlancer.yugabyte.ysql.gen.YSQLIndexGenerator;
import sqlancer.yugabyte.ysql.gen.YSQLInsertGenerator;
import sqlancer.yugabyte.ysql.gen.YSQLNotifyGenerator;
import sqlancer.yugabyte.ysql.gen.YSQLSequenceGenerator;
import sqlancer.yugabyte.ysql.gen.YSQLSetGenerator;
import sqlancer.yugabyte.ysql.gen.YSQLTableGenerator;
import sqlancer.yugabyte.ysql.gen.YSQLTableGroupGenerator;
import sqlancer.yugabyte.ysql.gen.YSQLTransactionGenerator;
import sqlancer.yugabyte.ysql.gen.YSQLTruncateGenerator;
import sqlancer.yugabyte.ysql.gen.YSQLUpdateGenerator;
import sqlancer.yugabyte.ysql.gen.YSQLVacuumGenerator;
import sqlancer.yugabyte.ysql.gen.YSQLViewGenerator;
@AutoService(DatabaseProvider.class)
public class YSQLProvider extends SQLProviderAdapter<YSQLGlobalState, YSQLOptions> {
// TODO Due to yugabyte problems with parallel DDL we need this lock object
public static final Object DDL_LOCK = new Object();
/**
* Generate only data types and expressions that are understood by PQS.
*/
public static boolean generateOnlyKnown;
protected String entryURL;
protected String username;
protected String password;
protected String entryPath;
protected String host;
protected int port;
protected String testURL;
protected String databaseName;
protected String createDatabaseCommand;
public YSQLProvider() {
super(YSQLGlobalState.class, YSQLOptions.class);
}
protected YSQLProvider(Class<YSQLGlobalState> globalClass, Class<YSQLOptions> optionClass) {
super(globalClass, optionClass);
}
public static int mapActions(YSQLGlobalState globalState, Action a) {
Randomly r = globalState.getRandomly();
int nrPerformed;
switch (a) {
case CREATE_INDEX:
nrPerformed = r.getInteger(0, 3);
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 RESET:
nrPerformed = r.getInteger(0, 3);
break;
case ANALYZE:
nrPerformed = r.getInteger(0, 3);
break;
case TABLEGROUP:
nrPerformed = r.getInteger(0, 3);
break;
case DELETE:
case RESET_ROLE:
case VACUUM:
case SET_CONSTRAINTS:
case SET:
case COMMENT_ON:
case NOTIFY:
case LISTEN:
case UNLISTEN:
case CREATE_SEQUENCE:
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 generateDatabase(YSQLGlobalState globalState) throws Exception {
readFunctions(globalState);
createTables(globalState, Randomly.fromOptions(4, 5, 6));
prepareTables(globalState);
}
@Override
public SQLConnection createDatabase(YSQLGlobalState globalState) throws SQLException {
username = globalState.getOptions().getUserName();
password = globalState.getOptions().getPassword();
host = globalState.getOptions().getHost();
port = globalState.getOptions().getPort();
entryPath = "/yugabyte";
entryURL = globalState.getDbmsSpecificOptions().connectionURL;
String entryDatabaseName = entryPath.substring(1);
databaseName = globalState.getDatabaseName();
if (host == null) {
host = YSQLOptions.DEFAULT_HOST;
}
if (port == MainOptions.NO_SET_PORT) {
port = YSQLOptions.DEFAULT_PORT;
}
try {
URI uri = new URI(entryURL);
String userInfoURI = uri.getUserInfo();
String pathURI = uri.getPath();
if (userInfoURI != null) {
// username and password specified in URL take precedence
if (userInfoURI.contains(":")) {
String[] userInfo = userInfoURI.split(":", 2);
username = userInfo[0];
password = userInfo[1];
} else {
username = userInfoURI;
password = null;
}
int userInfoIndex = entryURL.indexOf(userInfoURI);
String preUserInfo = entryURL.substring(0, userInfoIndex);
String postUserInfo = entryURL.substring(userInfoIndex + userInfoURI.length() + 1);
entryURL = preUserInfo + postUserInfo;
}
if (pathURI != null) {
entryPath = pathURI;
}
if (host == null) {
host = uri.getHost();
}
if (port == MainOptions.NO_SET_PORT) {
port = uri.getPort();
}
entryURL = String.format("jdbc:yugabytedb://%s:%d/%s", host, port, entryDatabaseName);
} catch (URISyntaxException e) {
throw new AssertionError(e);
}
createDatabaseSync(globalState, entryDatabaseName);
int databaseIndex = entryURL.indexOf("/" + entryDatabaseName) + 1;
String preDatabaseName = entryURL.substring(0, databaseIndex);
String postDatabaseName = entryURL.substring(databaseIndex + entryDatabaseName.length());
testURL = preDatabaseName + databaseName + postDatabaseName;
globalState.getState().logStatement(String.format("\\c %s;", databaseName));
return new SQLConnection(createConnectionSafely(testURL, username, password));
}
@Override
public String getDBMSName() {
return "ysql";
}
// for some reason yugabyte unable to create few databases simultaneously
private void createDatabaseSync(YSQLGlobalState globalState, String entryDatabaseName) throws SQLException {
synchronized (DDL_LOCK) {
exceptionLessSleep(5000);
Connection con = createConnectionSafely(entryURL, username, password);
globalState.getState().logStatement(String.format("\\c %s;", entryDatabaseName));
globalState.getState().logStatement("DROP DATABASE IF EXISTS " + databaseName);
createDatabaseCommand = getCreateDatabaseCommand(globalState);
globalState.getState().logStatement(createDatabaseCommand);
try (Statement s = con.createStatement()) {
s.execute("DROP DATABASE IF EXISTS " + databaseName);
}
try (Statement s = con.createStatement()) {
s.execute(createDatabaseCommand);
}
con.close();
}
}
private Connection createConnectionSafely(String entryURL, String user, String password) {
Connection con = null;
IllegalStateException lastException = new IllegalStateException("Empty exception");
long endTime = System.currentTimeMillis() + 30000;
while (System.currentTimeMillis() < endTime) {
try {
con = DriverManager.getConnection(entryURL, user, password);
break;
} catch (SQLException throwables) {
lastException = new IllegalStateException(throwables);
}
}
if (con == null) {
throw lastException;
}
return con;
}
protected void readFunctions(YSQLGlobalState globalState) throws SQLException {
SQLQueryAdapter query = new SQLQueryAdapter("SELECT proname, provolatile FROM pg_proc;");
SQLancerResultSet rs = query.executeAndGet(globalState);
while (rs.next()) {
String functionName = rs.getString(1);
Character functionType = rs.getString(2).charAt(0);
globalState.addFunctionAndType(functionName, functionType);
}
}
protected void createTables(YSQLGlobalState globalState, int numTables) throws Exception {
synchronized (DDL_LOCK) {
boolean prevCreationFailed = false; // small optimization - wait only after failed requests
while (globalState.getSchema().getDatabaseTables().size() < numTables) {
if (!prevCreationFailed) {
exceptionLessSleep(5000);
}
try {
String tableName = DBMSCommon.createTableName(globalState.getSchema().getDatabaseTables().size());
SQLQueryAdapter createTable = YSQLTableGenerator.generate(tableName, generateOnlyKnown,
globalState);
globalState.executeStatement(createTable);
prevCreationFailed = false;
} catch (IgnoreMeException e) {
prevCreationFailed = true;
}
}
}
}
private void exceptionLessSleep(long timeout) {
try {
Thread.sleep(timeout);
} catch (InterruptedException e) {
throw new AssertionError();
}
}
protected void prepareTables(YSQLGlobalState globalState) throws Exception {
StatementExecutor<YSQLGlobalState, Action> se = new StatementExecutor<>(globalState, Action.values(),
YSQLProvider::mapActions, (q) -> {
if (globalState.getSchema().getDatabaseTables().isEmpty()) {
throw new IgnoreMeException();
}
});
se.executeStatements();
globalState.executeStatement(new SQLQueryAdapter("COMMIT", true));
globalState.executeStatement(new SQLQueryAdapter("SET SESSION statement_timeout = 15000;\n"));
}
private String getCreateDatabaseCommand(YSQLGlobalState state) {
StringBuilder sb = new StringBuilder();
sb.append("CREATE DATABASE ").append(databaseName).append(" ");
if (Randomly.getBoolean() && state.getDbmsSpecificOptions().testCollations) {
sb.append("WITH ");
if (Randomly.getBoolean()) {
sb.append("ENCODING '");
sb.append(Randomly.fromOptions("utf8"));
sb.append("' ");
}
if (Randomly.getBoolean()) {
// if (YugabyteBugs.bug11357) {
// throw new IgnoreMeException();
// }
sb.append("COLOCATED = true ");
}
for (String lc : Arrays.asList("LC_COLLATE", "LC_CTYPE")) {
if (!state.getCollates().isEmpty() && Randomly.getBoolean()) {
sb.append(String.format(" %s = '%s'", lc, Randomly.fromList(state.getCollates())));
}
}
sb.append(" TEMPLATE template0");
}
return sb.toString();
}
public enum Action implements AbstractAction<YSQLGlobalState> {
ANALYZE(YSQLAnalyzeGenerator::create), //
ALTER_TABLE(g -> YSQLAlterTableGenerator.create(g.getSchema().getRandomTable(t -> !t.isView()), g)), //
COMMIT(g -> {
SQLQueryAdapter query;
if (Randomly.getBoolean()) {
query = new SQLQueryAdapter("COMMIT", true);
} else if (Randomly.getBoolean()) {
query = YSQLTransactionGenerator.executeBegin();
} else {
query = new SQLQueryAdapter("ROLLBACK", true);
}
return query;
}), //
DELETE(YSQLDeleteGenerator::create), //
DISCARD(YSQLDiscardGenerator::create), //
DROP_INDEX(YSQLDropIndexGenerator::create), //
CREATE_INDEX(YSQLIndexGenerator::generate), //
INSERT(YSQLInsertGenerator::insert), //
UPDATE(YSQLUpdateGenerator::create), //
TRUNCATE(YSQLTruncateGenerator::create), //
TABLEGROUP(YSQLTableGroupGenerator::create), //
VACUUM(YSQLVacuumGenerator::create), //
SET(YSQLSetGenerator::create), // TODO insert yugabyte sets
SET_CONSTRAINTS((g) -> {
String sb = "SET CONSTRAINTS ALL " + Randomly.fromOptions("DEFERRED", "IMMEDIATE");
return new SQLQueryAdapter(sb);
}), //
RESET_ROLE((g) -> new SQLQueryAdapter("RESET ROLE")), //
COMMENT_ON(YSQLCommentGenerator::generate), //
RESET((g) -> new SQLQueryAdapter("RESET ALL") /*
* https://www.postgres.org/docs/devel/sql-reset.html TODO: also
* configuration parameter
*/), //
NOTIFY(YSQLNotifyGenerator::createNotify), //
LISTEN((g) -> YSQLNotifyGenerator.createListen()), //
UNLISTEN((g) -> YSQLNotifyGenerator.createUnlisten()), //
CREATE_SEQUENCE(YSQLSequenceGenerator::createSequence), //
CREATE_VIEW(YSQLViewGenerator::create);
private final SQLQueryProvider<YSQLGlobalState> sqlQueryProvider;
Action(SQLQueryProvider<YSQLGlobalState> sqlQueryProvider) {
this.sqlQueryProvider = sqlQueryProvider;
}
@Override
public SQLQueryAdapter getQuery(YSQLGlobalState state) throws Exception {
return sqlQueryProvider.getQuery(state);
}
}
}