package com.splout.db.integration;
/*
* #%L
* Splout SQL Server
* %%
* Copyright (C) 2012 Datasalt Systems S.L.
* %%
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
* #L%
*/
import static org.junit.Assert.assertEquals;
import java.io.File;
import java.util.Map;
import java.util.Random;
import org.apache.commons.io.FileUtils;
import org.junit.Test;
import com.splout.db.common.SploutClient;
import com.splout.db.common.SploutConfiguration;
import com.splout.db.common.Tablespace;
import com.splout.db.engine.SQLite4JavaClient;
import com.splout.db.qnode.beans.QueryStatus;
/**
* This is a kind of integration test that tries to find bugs that will only appear when there are more than one QNode
* handling deploys, queries, etc. The test instantiates M Qnodes, N Dnodes and deploys several versions of the same
* tablespace. After each deployment we query for checking that the expected version is there. We use a Random object
* with a deterministic SEED.
* <p>
* TIP: Use "BaseIntegrationTest" for creating new integration tests.
*/
public class TestMultiQNodeDeploy extends BaseIntegrationTest {
public final static int N_QNODES = 2;
public final static int N_DNODES = 3;
public final static long SEED = 12345678;
public final static String TMP_FOLDER = "tmp-" + TestMultiQNodeDeploy.class.getName();
@Test
public void test() throws Throwable {
FileUtils.deleteDirectory(new File(TMP_FOLDER));
new File(TMP_FOLDER).mkdirs();
createSploutEnsemble(N_QNODES, N_DNODES);
Random random = new Random(SEED);
try {
for(int i = 0; i < 3; i++) {
deployAndQueryRandomTablespace(random);
}
} finally {
closeSploutEnsemble();
FileUtils.deleteDirectory(new File(TMP_FOLDER));
}
}
@SuppressWarnings("unchecked")
private void deployAndQueryRandomTablespace(Random random) throws Exception {
Tablespace testTablespace = createTestTablespace(N_DNODES);
File deployData = new File(TMP_FOLDER + "/" + "deploy-folder-" + random.nextInt());
deployData.mkdir();
// Each random deployment will have a fixed random string associated with it
String randomStr = "ID" + Math.abs(random.nextInt());
for(int i = 0; i < N_DNODES; i++) {
File dbData = new File(deployData, i + ".db");
SQLite4JavaClient manager = new SQLite4JavaClient(dbData + "", null);
// We create a foo database with one integer and one text
manager.query("CREATE TABLE foo (intCol INT, strCol TEXT);", 100);
// We insert as many values as the ones we defined in the partition map
for(int j = i * 10; j < (i * 10 + 10); j++) {
manager.query("INSERT INTO foo VALUES (" + j + ", " + "'" + randomStr + "');", 100);
}
manager.close();
}
SploutConfiguration config = SploutConfiguration.getTestConfig();
SploutClient client = getRandomQNodeClient(random, config);
client.deploy("p1", testTablespace.getPartitionMap(), testTablespace.getReplicationMap(),
deployData.getAbsoluteFile().toURI());
Thread.sleep(2000); // TODO How to improve this.
// Perform N queries, one to each DNode and validate the resultant data
for(int i = 0; i < N_DNODES; i++) {
client = getRandomQNodeClient(random, config);
QueryStatus qStatus = client.query("p1", ((i * 10) + 1) + "", "SELECT * FROM foo;", null);
assertEquals((Integer) i, qStatus.getShard());
assertEquals(10, qStatus.getResult().size());
for(Object obj : qStatus.getResult()) {
Map<String, Object> map = (Map<String, Object>) obj;
assertEquals(randomStr, map.get("strCol"));
}
}
}
}