/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF 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.
*/
package org.apache.activemq.leveldb.test;
import org.apache.activemq.Service;
import org.apache.activemq.command.ActiveMQQueue;
import org.apache.activemq.leveldb.CountDownFuture;
import org.apache.activemq.leveldb.LevelDBStore;
import org.apache.activemq.leveldb.replicated.ElectingLevelDBStore;
import org.apache.activemq.leveldb.replicated.MasterLevelDBStore;
import org.apache.activemq.leveldb.replicated.SlaveLevelDBStore;
import org.apache.activemq.leveldb.util.FileSupport;
import org.apache.activemq.store.MessageStore;
import org.apache.commons.io.FileUtils;
import org.fusesource.hawtdispatch.transport.TcpTransport;
import org.junit.After;
import org.junit.Test;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.File;
import java.util.ArrayList;
import java.util.LinkedList;
import java.util.concurrent.TimeUnit;
import static org.apache.activemq.leveldb.test.ReplicationTestSupport.addMessage;
import static org.apache.activemq.leveldb.test.ReplicationTestSupport.createPlayload;
import static org.apache.activemq.leveldb.test.ReplicationTestSupport.getMessages;
import static org.junit.Assert.*;
/**
*/
public class ReplicatedLevelDBStoreTest {
protected static final Logger LOG = LoggerFactory.getLogger(ReplicatedLevelDBStoreTest.class);
ArrayList<LevelDBStore> stores = new ArrayList<LevelDBStore>();
@Test(timeout = 1000*60*10)
public void testMinReplicaEnforced() throws Exception {
File masterDir = new File("target/activemq-data/leveldb-node1");
File slaveDir = new File("target/activemq-data/leveldb-node2");
FileSupport.toRichFile(masterDir).recursiveDelete();
FileSupport.toRichFile(slaveDir).recursiveDelete();
final MasterLevelDBStore master = createMaster(masterDir);
master.setReplicas(2);
CountDownFuture masterStartLatch = asyncStart(master);
stores.add(master);
// Start the store should not complete since we don't have enough
// replicas.
assertFalse(masterStartLatch.await(2, TimeUnit.SECONDS));
// Adding a slave should allow the master startup to complete.
SlaveLevelDBStore slave = createSlave(master, slaveDir);
slave.start();
stores.add(slave);
assertTrue(masterStartLatch.await(2, TimeUnit.SECONDS));
// New updates should complete quickly now..
MessageStore ms = master.createQueueMessageStore(new ActiveMQQueue("TEST"));
CountDownFuture f = asyncAddMessage(ms, "m1");
assertTrue(f.await(1, TimeUnit.SECONDS));
// If the slave goes offline, then updates should once again
// not complete.
slave.stop();
f = asyncAddMessage(ms, "m2");
assertFalse(f.await(2, TimeUnit.SECONDS));
// Restart and the op should complete.
slave = createSlave(master, slaveDir);
slave.start();
assertTrue(f.await(2, TimeUnit.SECONDS));
master.stop();
slave.stop();
}
private CountDownFuture asyncAddMessage(final MessageStore ms, final String body) {
final CountDownFuture<Throwable> f = new CountDownFuture<Throwable>();
LevelDBStore.BLOCKING_EXECUTOR().execute(new Runnable() {
public void run() {
try {
addMessage(ms, body);
f.set(null);
} catch (Throwable e) {
f.set(e);
}
}
});
return f;
}
private CountDownFuture asyncStart(final Service service) {
final CountDownFuture<Throwable> f = new CountDownFuture<Throwable>();
LevelDBStore.BLOCKING_EXECUTOR().execute(new Runnable() {
public void run() {
try {
service.start();
f.set(null);
} catch (Throwable e) {
f.set(e);
}
}
});
return f;
}
@Test(timeout = 1000*60*10)
public void testReplication() throws Exception {
LinkedList<File> directories = new LinkedList<File>();
directories.add(new File("target/activemq-data/leveldb-node1"));
directories.add(new File("target/activemq-data/leveldb-node2"));
directories.add(new File("target/activemq-data/leveldb-node3"));
resetDirectories(directories);
// For some reason this had to be 64k to trigger a bug where
// slave index snapshots were being done incorrectly.
String playload = createPlayload(64*1024);
ArrayList<String> expected_list = new ArrayList<String>();
// We will rotate between 3 nodes the task of being the master.
for (int j = 0; j < 5; j++) {
MasterLevelDBStore master = createMaster(directories.get(0));
CountDownFuture masterStart = asyncStart(master);
SlaveLevelDBStore slave1 = createSlave(master, directories.get(1));
SlaveLevelDBStore slave2 = createSlave(master, directories.get(2));
asyncStart(slave2);
masterStart.await();
if (j == 0) {
stores.add(master);
stores.add(slave1);
stores.add(slave2);
}
MessageStore ms = master.createQueueMessageStore(new ActiveMQQueue("TEST"));
LOG.info("Checking: "+master.getDirectory());
assertEquals(expected_list, getMessages(ms));
LOG.info("Adding messages...");
final int TOTAL = 500;
for (int i = 0; i < TOTAL; i++) {
if (i % ((int) (TOTAL * 0.10)) == 0) {
LOG.info("" + (100 * i / TOTAL) + "% done");
}
if (i == 250) {
slave1.start();
slave2.stop();
LOG.info("Checking: "+master.getDirectory());
assertEquals(expected_list, getMessages(ms));
}
String msgid = "m:" + j + ":" + i;
addMessage(ms, msgid, playload);
expected_list.add(msgid);
}
LOG.info("Checking: "+master.getDirectory());
assertEquals(expected_list, getMessages(ms));
LOG.info("Stopping master: " + master.getDirectory());
master.stop();
Thread.sleep(3*1000);
LOG.info("Stopping slave: " + slave1.getDirectory());
slave1.stop();
// Rotate the dir order so that slave1 becomes the master next.
directories.addLast(directories.removeFirst());
}
}
void resetDirectories(LinkedList<File> directories) {
for (File directory : directories) {
FileSupport.toRichFile(directory).recursiveDelete();
directory.mkdirs();
FileSupport.toRichFile(new File(directory, "nodeid.txt")).writeText(directory.getName(), "UTF-8");
}
}
@Test(timeout = 1000*60*10)
public void testSlowSlave() throws Exception {
LinkedList<File> directories = new LinkedList<File>();
directories.add(new File("target/activemq-data/leveldb-node1"));
directories.add(new File("target/activemq-data/leveldb-node2"));
directories.add(new File("target/activemq-data/leveldb-node3"));
resetDirectories(directories);
File node1Dir = directories.get(0);
File node2Dir = directories.get(1);
File node3Dir = directories.get(2);
ArrayList<String> expected_list = new ArrayList<String>();
MasterLevelDBStore node1 = createMaster(node1Dir);
stores.add(node1);
CountDownFuture masterStart = asyncStart(node1);
// Lets create a 1 slow slave...
SlaveLevelDBStore node2 = new SlaveLevelDBStore() {
boolean hitOnce = false;
@Override
public TcpTransport create_transport() {
if( hitOnce ) {
return super.create_transport();
}
hitOnce = true;
TcpTransport transport = super.create_transport();
transport.setMaxReadRate(64*1024);
return transport;
}
};
stores.add(node2);
configureSlave(node2, node1, node2Dir);
SlaveLevelDBStore node3 = createSlave(node1, node3Dir);
stores.add(node3);
asyncStart(node2);
asyncStart(node3);
masterStart.await();
LOG.info("Adding messages...");
String playload = createPlayload(64 * 1024);
MessageStore ms = node1.createQueueMessageStore(new ActiveMQQueue("TEST"));
final int TOTAL = 10;
for (int i = 0; i < TOTAL; i++) {
if (i == 8) {
// Stop the fast slave so that we wait for the slow slave to
// catch up..
node3.stop();
}
String msgid = "m:" + ":" + i;
addMessage(ms, msgid, playload);
expected_list.add(msgid);
}
LOG.info("Checking node1 state");
assertEquals(expected_list, getMessages(ms));
LOG.info("Stopping node1: " + node1.node_id());
node1.stop();
LOG.info("Stopping slave: " + node2.node_id());
node2.stop();
}
@After
public void stop() throws Exception {
for(LevelDBStore store: stores) {
if (store.isStarted()) {
store.stop();
}
FileUtils.deleteDirectory(store.directory());
}
stores.clear();
}
private SlaveLevelDBStore createSlave(MasterLevelDBStore master, File directory) {
SlaveLevelDBStore slave = new SlaveLevelDBStore();
configureSlave(slave, master, directory);
return slave;
}
private SlaveLevelDBStore configureSlave(SlaveLevelDBStore slave, MasterLevelDBStore master, File directory) {
slave.setDirectory(directory);
slave.setConnect("tcp://127.0.0.1:" + master.getPort());
slave.setSecurityToken("foo");
slave.setLogSize(1023 * 200);
return slave;
}
private MasterLevelDBStore createMaster(File directory) {
MasterLevelDBStore master = new MasterLevelDBStore();
master.setDirectory(directory);
master.setBind("tcp://0.0.0.0:0");
master.setSecurityToken("foo");
master.setReplicas(2);
master.setLogSize(1023 * 200);
return master;
}
}