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/*
* ============LICENSE_START=======================================================
* feature-distributed-locking
* ================================================================================
* Copyright (C) 2018 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* Licensed 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.
* ============LICENSE_END=========================================================
*/
package org.onap.policy.distributed.locking.test;
import org.junit.AfterClass;
import org.junit.Before;
import org.junit.BeforeClass;
import org.junit.Test;
import org.onap.policy.distributed.locking.DistributedLockingFeature;
import org.onap.policy.drools.persistence.SystemPersistence;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.TimeUnit;
public class TargetLockTest {
private static final Logger logger = LoggerFactory.getLogger(TargetLockTest.class);
private static final String DB_CONNECTION = "jdbc:h2:mem:pooling;INIT=CREATE SCHEMA IF NOT EXISTS pooling\\;SET SCHEMA pooling";
private static final String DB_USER = "user";
private static final String DB_PASSWORD = "password";
private static Connection conn = null;
private static DistributedLockingFeature distLockFeat;
@BeforeClass
public static void setup() {
getDBConnection();
createTable();
SystemPersistence.manager.setConfigurationDir("src/test/resources");
distLockFeat = new DistributedLockingFeature();
distLockFeat.afterStart(null);
}
@AfterClass
public static void cleanUp() {
distLockFeat.beforeShutdown(null);
try {
conn.close();
} catch (SQLException e) {
logger.error("Error in TargetLockTest.cleanUp()", e);
}
}
@Before
public void wipeDb() {
try (PreparedStatement lockDelete = conn.prepareStatement("DELETE FROM pooling.locks");){
lockDelete.executeUpdate();
} catch (SQLException e) {
logger.error("Error in TargetLockTest.wipeDb()", e);
throw new RuntimeException(e);
}
}
@Test
public void testGrabLockSuccess() throws InterruptedException, ExecutionException {
assertTrue(distLockFeat.beforeLock("resource1", "owner1", null).get());
//attempt to grab expiredLock
try (PreparedStatement updateStatement = conn.prepareStatement("UPDATE pooling.locks SET expirationTime = ? WHERE resourceId = ?");)
{
updateStatement.setLong(1, System.currentTimeMillis() - 1000);
updateStatement.setString(2, "resource1");
updateStatement.executeUpdate();
} catch (SQLException e) {
logger.error("Error in TargetLockTest.testGrabLockSuccess()", e);
throw new RuntimeException(e);
}
assertTrue(distLockFeat.beforeLock("resource1", "owner1", null).get());
}
@Test
public void testExpiredLocks() throws InterruptedException, ExecutionException {
CountDownLatch latch = new CountDownLatch(1);
distLockFeat.beforeLock("resource1", "owner1", null);
try {
latch.await(1000, TimeUnit.MILLISECONDS);
} catch (InterruptedException e) {
logger.error("Error in testExpiredLocks", e);
}
//Heartbeat should keep it active
assertFalse(distLockFeat.beforeLock("resource1", "owner1", null).get());
}
@Test
public void testGrabLockFail() throws InterruptedException, ExecutionException {
CountDownLatch latch = new CountDownLatch(1);
distLockFeat.beforeLock("resource1", "owner1", null);
try {
latch.await(10, TimeUnit.MILLISECONDS);
} catch (InterruptedException e) {
logger.error("Error in testExpiredLocks", e);
}
assertFalse(distLockFeat.beforeLock("resource1", "owner1", null).get());
}
@Test
public void testUnlock() throws InterruptedException, ExecutionException {
distLockFeat.beforeLock("resource1", "owner1", null);
assertTrue(distLockFeat.beforeUnlock("resource1", "owner1"));
assertTrue(distLockFeat.beforeLock("resource1", "owner1", null).get());
}
@Test
public void testIsActive() {
assertFalse(distLockFeat.beforeIsLockedBy("resource1", "owner1"));
distLockFeat.beforeLock("resource1", "owner1", null);
assertTrue(distLockFeat.beforeIsLockedBy("resource1", "owner1"));
assertFalse(distLockFeat.beforeIsLockedBy("resource1", "owner2"));
// isActive on expiredLock
try (PreparedStatement updateStatement = conn
.prepareStatement("UPDATE pooling.locks SET expirationTime = ? WHERE resourceId = ?");) {
updateStatement.setLong(1, System.currentTimeMillis() - 5000);
updateStatement.setString(2, "resource1");
updateStatement.executeUpdate();
} catch (SQLException e) {
logger.error("Error in TargetLockTest.testIsActive()", e);
throw new RuntimeException(e);
}
assertFalse(distLockFeat.beforeIsLockedBy("resource1", "owner1"));
distLockFeat.beforeLock("resource1", "owner1", null);
//Unlock record, next isActive attempt should fail
distLockFeat.beforeUnlock("resource1", "owner1");
assertFalse(distLockFeat.beforeIsLockedBy("resource1", "owner1"));
}
@Test
public void testHeartbeat() {
CountDownLatch latch = new CountDownLatch(1);
distLockFeat.beforeLock("resource1", "owner1", null);
try {
latch.await(1000, TimeUnit.MILLISECONDS);
} catch (InterruptedException e) {
logger.error("Error in testExpiredLocks", e);
}
// This test always returns true.
assertTrue(distLockFeat.beforeIsLocked("resource1"));
}
@Test
public void unlockBeforeLock() {
assertFalse(distLockFeat.beforeUnlock("resource1", "owner1"));
distLockFeat.beforeLock("resource1", "owner1", null);
assertTrue(distLockFeat.beforeUnlock("resource1", "owner1"));
assertFalse(distLockFeat.beforeUnlock("resource1", "owner1"));
}
@Test
public void testIsLocked() {
assertFalse(distLockFeat.beforeIsLocked("resource1"));
distLockFeat.beforeLock("resource1", "owner1", null);
assertTrue(distLockFeat.beforeIsLocked("resource1"));
}
private static void getDBConnection() {
try {
conn = DriverManager.getConnection(DB_CONNECTION, DB_USER, DB_PASSWORD);
} catch (SQLException e) {
logger.error("Error in TargetLockTest.getDBConnection()", e);
}
}
private static void createTable() {
String createString = "create table if not exists pooling.locks (resourceId VARCHAR(128), host VARCHAR(128), owner VARCHAR(128), expirationTime BIGINT, PRIMARY KEY (resourceId))";
try (PreparedStatement createStmt = conn.prepareStatement(createString);) {
createStmt.executeUpdate();
} catch (SQLException e) {
logger.error("Error in TargetLockTest.createTable()", e);
}
}
}
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