/*
 *
 * MariaDB Client for Java
 *
 * Copyright (c) 2012-2014 Monty Program Ab.
 * Copyright (c) 2015-2017 MariaDB Ab.
 *
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation; either version 2.1 of the License, or (at your option)
 * any later version.
 *
 * This library is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License
 * for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License along
 * with this library; if not, write to Monty Program Ab info@montyprogram.com.
 *
 * This particular MariaDB Client for Java file is work
 * derived from a Drizzle-JDBC. Drizzle-JDBC file which is covered by subject to
 * the following copyright and notice provisions:
 *
 * Copyright (c) 2009-2011, Marcus Eriksson
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 * Redistributions of source code must retain the above copyright notice, this list
 * of conditions and the following disclaimer.
 *
 * Redistributions in binary form must reproduce the above copyright notice, this
 * list of conditions and the following disclaimer in the documentation and/or
 * other materials provided with the distribution.
 *
 * Neither the name of the driver nor the names of its contributors may not be
 * used to endorse or promote products derived from this software without specific
 * prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS  AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
 * OF SUCH DAMAGE.
 *
 */

package org.mariadb.jdbc;

import org.junit.Assert;
import org.junit.Assume;
import org.junit.Before;
import org.junit.Test;

import java.sql.*;
import java.util.Arrays;
import java.util.Properties;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;

public class CancelTest extends BaseTest {


    @Before
    public void cancelSupported() throws SQLException {
        requireMinimumVersion(5, 0);
        Assume.assumeTrue(System.getenv("MAXSCALE_VERSION") == null);
    }

    @Test
    public void cancelTest() {
        Assume.assumeFalse(sharedIsAurora());
        try (Connection tmpConnection = openNewConnection(connUri, new Properties())) {

            Statement stmt = tmpConnection.createStatement();
            ExecutorService exec = Executors.newFixedThreadPool(1);
            //check blacklist shared
            exec.execute(new CancelThread(stmt));
            stmt.execute("select * from information_schema.columns as c1,  information_schema.tables, information_schema.tables as t2");

            //wait for thread endings
            exec.shutdown();
            Assert.fail();
        } catch (SQLException e) {
            //normal exception
        }

    }

    @Test(timeout = 20000, expected = SQLTimeoutException.class)
    public void timeoutSleep() throws Exception {
        Assume.assumeFalse(sharedIsAurora());
        try (Connection tmpConnection = openNewConnection(connUri, new Properties())) {
            Statement stmt = tmpConnection.createStatement();
            stmt.setQueryTimeout(1); //query take more than 20 seconds (local DB)
            stmt.execute("select * from information_schema.columns as c1,  information_schema.tables, information_schema.tables as t2");
        }
    }

    @Test(timeout = 20000, expected = SQLTimeoutException.class)
    public void timeoutPrepareSleep() throws Exception {
        Assume.assumeFalse(sharedIsAurora());
        try (Connection tmpConnection = openNewConnection(connUri, new Properties())) {
            try (PreparedStatement stmt = tmpConnection.prepareStatement(
                    "select * from information_schema.columns as c1,  information_schema.tables, information_schema.tables as t2")) {
                stmt.setQueryTimeout(1); //query take more than 20 seconds (local DB)
                stmt.execute();
            }
        }
    }

    @Test(timeout = 5000, expected = BatchUpdateException.class)
    public void timeoutBatch() throws Exception {
        Assume.assumeFalse(sharedIsAurora());
        Assume.assumeTrue(!sharedOptions().allowMultiQueries && !sharedIsRewrite());
        createTable("timeoutBatch", "aa text");

        Statement stmt = sharedConnection.createStatement();
        char[] arr = new char[1000];
        Arrays.fill(arr, 'a');
        String str = String.valueOf(arr);
        for (int i = 0; i < 20000; i++) {
            stmt.addBatch("INSERT INTO timeoutBatch VALUES ('" + str + "')");
        }
        stmt.setQueryTimeout(1);
        stmt.executeBatch();
    }

    @Test(timeout = 5000, expected = BatchUpdateException.class)
    public void timeoutPrepareBatch() throws Exception {
        Assume.assumeFalse(sharedIsAurora());
        Assume.assumeTrue(!sharedOptions().allowMultiQueries && !sharedIsRewrite());
        Assume.assumeTrue(!(sharedOptions().useBulkStmts && isMariadbServer() && minVersion(10,2)));
        createTable("timeoutBatch", "aa text");
        try (Connection tmpConnection = openNewConnection(connUri, new Properties())) {
            char[] arr = new char[1000];
            Arrays.fill(arr, 'a');
            String str = String.valueOf(arr);
            try (PreparedStatement stmt = tmpConnection.prepareStatement("INSERT INTO timeoutBatch VALUES (?)")) {
                stmt.setQueryTimeout(1);
                for (int i = 0; i < 20000; i++) {
                    stmt.setString(1, str);
                    stmt.addBatch();
                }
                stmt.executeBatch();
            }
        }
    }

    @Test
    public void noTimeoutSleep() throws Exception {
        Statement stmt = sharedConnection.createStatement();
        stmt.setQueryTimeout(1);
        stmt.execute("select sleep(0.5)");
    }

    @Test
    public void cancelIdleStatement() throws Exception {
        Statement stmt = sharedConnection.createStatement();
        stmt.cancel();
        ResultSet rs = stmt.executeQuery("select 1");
        assertTrue(rs.next());
        assertEquals(rs.getInt(1), 1);
    }

    private static class CancelThread implements Runnable {
        private final Statement stmt;

        public CancelThread(Statement stmt) {
            this.stmt = stmt;
        }

        @Override
        public void run() {
            try {
                Thread.sleep(100);
                stmt.cancel();
            } catch (SQLException | InterruptedException e) {
                e.printStackTrace();
            }
        }
    }
}
