org.apache.jackrabbit.oak.benchmark.ReplicaCrashResilienceTest Maven / Gradle / Ivy
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* 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
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* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
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package org.apache.jackrabbit.oak.benchmark;
import javax.jcr.LoginException;
import javax.jcr.Node;
import javax.jcr.Repository;
import javax.jcr.RepositoryException;
import javax.jcr.Session;
import javax.jcr.SimpleCredentials;
import org.apache.jackrabbit.oak.fixture.RepositoryFixture;
public class ReplicaCrashResilienceTest extends Benchmark {
private static final String LEVEL2POINTER = "level2pointer";
private static final String LEVEL1POINTER = "level1pointer";
private static final String WRITER_INFOS = "writerInfos";
private static final String REPLICA_CRASH_TEST = "replicaCrashTest-"+System.currentTimeMillis();
@Override
public void run(Iterable fixtures) {
for (RepositoryFixture fixture : fixtures) {
if (fixture.isAvailable(1)) {
System.out.format("%s: ReplicaCrashResilienceTest%n", fixture);
try {
Repository[] cluster = fixture.setUpCluster(1);
try {
run(cluster[0]);
} finally {
fixture.tearDownCluster();
}
} catch (Exception e) {
e.printStackTrace();
System.exit(1);
}
}
}
}
private void run(final Repository repository) throws Exception {
System.out.println("Setup...");
try {
Session session = repository.login(
new SimpleCredentials("admin", "admin".toCharArray()));
final Node rootNode = session.getRootNode();
if (rootNode.hasNode(REPLICA_CRASH_TEST)) {
// then cleanup first
rootNode.getNode(REPLICA_CRASH_TEST).remove();
session.save();
}
session.refresh(false);
final Node replicaCrashTestNode = rootNode.addNode(REPLICA_CRASH_TEST);
replicaCrashTestNode.addNode(WRITER_INFOS);
session.save();
} catch (RepositoryException e1) {
e1.printStackTrace();
System.exit(1);
}
// this runnable will go ahead and start writing nodes to the repo
// the structure is:
// /replicaCrashTest/writerInfos
// - level 1 pointer
// - level 2 pointer
// /replicaCrashTest/[1-n]/[1-1000]
Runnable writer = new Runnable() {
@Override
public void run() {
int level1Pointer = 1;
int level2Pointer = 1;
Session session = null;
try {
session = repository.login(
new SimpleCredentials("admin", "admin".toCharArray()));
} catch (Exception e1) {
e1.printStackTrace();
System.exit(1);
}
System.out.println("Writer: Test start.");
while(true) {
try{
final String level1 = String.valueOf(level1Pointer);
final String level2 = String.valueOf(level2Pointer);
final Node rootNode = session.getRootNode();
final Node replicaCrashTestNode = rootNode.getNode(REPLICA_CRASH_TEST);
final Node writerInfosNode = replicaCrashTestNode.getNode(WRITER_INFOS);
Node level1Node;
if (replicaCrashTestNode.hasNode(level1)) {
level1Node = replicaCrashTestNode.getNode(level1);
} else {
level1Node = replicaCrashTestNode.addNode(level1);
System.out.println("Writer: Created level1 node: "+level1Node);
}
Node level2Node = level1Node.addNode(level2);
System.out.println("Writer: Created level2 node: "+level2Node);
writerInfosNode.setProperty(LEVEL1POINTER, level1Pointer);
writerInfosNode.setProperty(LEVEL2POINTER, level2Pointer);
session.save();
} catch(com.google.common.util.concurrent.UncheckedExecutionException e) {
System.out.println("Got an UncheckedException (levels: "+level1Pointer+"/"+level2Pointer+") from the google cache probably: "+e);
try {
Thread.sleep(500);
} catch (InterruptedException e2) {
e.printStackTrace();
System.exit(1);
}
continue;
} catch (Throwable e) { // yes, one should not catch Throwable - but this is a test only
e.printStackTrace(System.out);
System.exit(1);
}
if (++level2Pointer>1000) {
level2Pointer = 1;
level1Pointer++;
}
}
}
};
Thread th1 = new Thread(writer);
System.out.println("Launching writer...");
th1.start();
Runnable reader = new Runnable() {
@Override
public void run() {
long level1Pointer = 1;
long level2Pointer = 1;
Session session = null;
try {
session = repository.login(
new SimpleCredentials("admin", "admin".toCharArray()));
Node rootNode = session.getRootNode();
Node replicaCrashTestNode = rootNode.getNode(REPLICA_CRASH_TEST);
Node writerInfos;
while(true) {
try{
final String level1 = String.valueOf(level1Pointer);
final String level2 = String.valueOf(level2Pointer);
session.refresh(false);
writerInfos = replicaCrashTestNode.getNode(WRITER_INFOS);
long writerLevel1Pointer = writerInfos.getProperty(LEVEL1POINTER).getLong();
long writerLevel2Pointer = writerInfos.getProperty(LEVEL2POINTER).getLong();
long writerPointer = writerLevel1Pointer * 1000 + writerLevel2Pointer;
long myPointer = level1Pointer * 1000 + level2Pointer;
long diff = writerPointer - myPointer;
if (diff<100) {
System.out.println("Reader: Closer than 100, waiting...level1="+level1+", level2="+level2);
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
System.exit(1);
}
continue;
}
rootNode = session.getRootNode();
replicaCrashTestNode = rootNode.getNode(REPLICA_CRASH_TEST);
Node level1Node = replicaCrashTestNode.getNode(level1);
if (!level1Node.hasNode(level2)) {
System.err.println("Reader: NOT FOUND: level1="+level1+", level2="+level2);
Thread.sleep(500);
session.refresh(false);
System.err.println("Reader: Reverifying once...");
rootNode = session.getRootNode();
replicaCrashTestNode = rootNode.getNode(REPLICA_CRASH_TEST);
level1Node = replicaCrashTestNode.getNode(level1);
final boolean hasNode = level1Node.hasNode(level2);
if (hasNode) {
System.err.println("Reader: yup, exists: "+hasNode+", level1="+level1+", level2="+level2);
} else {
System.err.println("Reader: not found: level1="+level1+", level2="+level2);
}
} else {
// read it
Node level2Node = level1Node.getNode(level2);
System.out.println("Reader: verified level1="+level1+", level2="+level2);
}
} catch(com.google.common.util.concurrent.UncheckedExecutionException e) {
System.out.println("Got an UncheckedException from the google cache probably: "+e);
try {
Thread.sleep(500);
} catch (InterruptedException e2) {
e.printStackTrace();
System.exit(1);
}
continue;
} catch (Throwable e) { // yes, one should not catch Throwable - but this is a test only
e.printStackTrace(System.out);
System.exit(1);
}
if (++level2Pointer>1000) {
level2Pointer = 1;
level1Pointer++;
}
}
} catch (RepositoryException e1) {
e1.printStackTrace(System.out);
System.exit(1);
}
System.out.println("Test start.");
}
};
Thread th2 = new Thread(reader);
Thread.sleep(1000);
th2.start();
System.out.println("Waiting for writer to finish...");
th1.join();
}
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