/*
 * Licensed to CRATE Technology GmbH ("Crate") under one or more contributor
 * license agreements.  See the NOTICE file distributed with this work for
 * additional information regarding copyright ownership.  Crate licenses
 * this file to you under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.  You may
 * obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
 * License for the specific language governing permissions and limitations
 * under the License.
 *
 * However, if you have executed another commercial license agreement
 * with Crate these terms will supersede the license and you may use the
 * software solely pursuant to the terms of the relevant commercial agreement.
 */

package io.crate.integrationtests;

import io.crate.testing.UseJdbc;
import org.junit.Test;

import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicReference;

import static org.hamcrest.Matchers.is;

@UseJdbc
public class CreateTableIntegrationTest extends SQLTransportIntegrationTest {

    @Test
    public void testCreateTableIfNotExistsConcurrently() throws Throwable {
        executeCreateTableThreaded("create table if not exists t (name string) with (number_of_replicas = 0)");
    }

    @Test
    public void testCreatePartitionedTableIfNotExistsConcurrently() throws Throwable {
        executeCreateTableThreaded("create table if not exists t " +
                                   "(name string, p string) partitioned by (p) " +
                                   "with (number_of_replicas = 0)");
    }

    private void executeCreateTableThreaded(final String statement) throws Throwable {
        ExecutorService executorService = Executors.newFixedThreadPool(20);
        final AtomicReference<Throwable> lastThrowable = new AtomicReference<>();

        for (int i = 0; i < 20; i++) {
            executorService.submit(new Runnable() {
                @Override
                public void run() {
                    try {
                        execute(statement);
                    } catch (Throwable t) {
                        lastThrowable.set(t);
                    }
                }
            });
        }

        executorService.shutdown();
        assertThat("executorservice did not shutdown within timeout", executorService.awaitTermination(3, TimeUnit.SECONDS), is(true));

        Throwable throwable = lastThrowable.get();
        if (throwable != null) {
            throw throwable;
        }
    }
}