/**
* 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.zookeeper.server;
import org.apache.zookeeper.*;
import org.apache.zookeeper.data.Stat;
import org.apache.zookeeper.test.ClientBase;
import org.junit.Assert;
import org.junit.Test;
import java.io.IOException;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.concurrent.*;
public class CreateContainerTest extends ClientBase {
private ZooKeeper zk;
@Override
public void setUp() throws Exception {
super.setUp();
zk = createClient();
}
@Override
public void tearDown() throws Exception {
super.tearDown();
zk.close();
}
@Test(timeout = 30000)
public void testCreate()
throws IOException, KeeperException, InterruptedException {
createNoStatVerifyResult("/foo");
createNoStatVerifyResult("/foo/child");
}
@Test(timeout = 30000)
public void testCreateWithStat()
throws IOException, KeeperException, InterruptedException {
Stat stat = createWithStatVerifyResult("/foo");
Stat childStat = createWithStatVerifyResult("/foo/child");
// Don't expect to get the same stats for different creates.
Assert.assertFalse(stat.equals(childStat));
}
@SuppressWarnings("ConstantConditions")
@Test(timeout = 30000)
public void testCreateWithNullStat()
throws IOException, KeeperException, InterruptedException {
final String name = "/foo";
Assert.assertNull(zk.exists(name, false));
Stat stat = null;
// If a null Stat object is passed the create should still
// succeed, but no Stat info will be returned.
zk.create(name, name.getBytes(), ZooDefs.Ids.OPEN_ACL_UNSAFE, CreateMode.CONTAINER, stat);
Assert.assertNull(stat);
Assert.assertNotNull(zk.exists(name, false));
}
@Test(timeout = 30000)
public void testSimpleDeletion()
throws IOException, KeeperException, InterruptedException {
zk.create("/foo", new byte[0], ZooDefs.Ids.OPEN_ACL_UNSAFE, CreateMode.CONTAINER);
zk.create("/foo/bar", new byte[0], ZooDefs.Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT);
zk.delete("/foo/bar", -1); // should cause "/foo" to get deleted when checkContainers() is called
ContainerManager containerManager = new ContainerManager(serverFactory.getZooKeeperServer()
.getZKDatabase(), serverFactory.getZooKeeperServer().firstProcessor, 1, 100);
containerManager.checkContainers();
Thread.sleep(1000);
Assert.assertNull("Container should have been deleted", zk.exists("/foo", false));
}
@Test(timeout = 30000)
public void testMultiWithContainerSimple()
throws IOException, KeeperException, InterruptedException {
Op createContainer = Op.create("/foo", new byte[0],
ZooDefs.Ids.OPEN_ACL_UNSAFE, CreateMode.CONTAINER);
zk.multi(Collections.singletonList(createContainer));
DataTree dataTree = serverFactory.getZooKeeperServer().getZKDatabase().getDataTree();
Assert.assertEquals(dataTree.getContainers().size(), 1);
}
@Test(timeout = 30000)
public void testMultiWithContainer()
throws IOException, KeeperException, InterruptedException {
Op createContainer = Op.create("/foo", new byte[0],
ZooDefs.Ids.OPEN_ACL_UNSAFE, CreateMode.CONTAINER);
Op createChild = Op.create("/foo/bar", new byte[0],
ZooDefs.Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT);
zk.multi(Arrays.asList(createContainer, createChild));
DataTree dataTree = serverFactory.getZooKeeperServer().getZKDatabase().getDataTree();
Assert.assertEquals(dataTree.getContainers().size(), 1);
zk.delete("/foo/bar", -1); // should cause "/foo" to get deleted when checkContainers() is called
ContainerManager containerManager = new ContainerManager(serverFactory.getZooKeeperServer()
.getZKDatabase(), serverFactory.getZooKeeperServer().firstProcessor, 1, 100);
containerManager.checkContainers();
Thread.sleep(1000);
Assert.assertNull("Container should have been deleted", zk.exists("/foo", false));
createContainer = Op.create("/foo", new byte[0],
ZooDefs.Ids.OPEN_ACL_UNSAFE, CreateMode.CONTAINER);
createChild = Op.create("/foo/bar", new byte[0],
ZooDefs.Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT);
Op deleteChild = Op.delete("/foo/bar", -1);
zk.multi(Arrays.asList(createContainer, createChild, deleteChild));
containerManager.checkContainers();
Thread.sleep(1000);
Assert.assertNull("Container should have been deleted", zk.exists("/foo", false));
}
@Test(timeout = 30000)
public void testSimpleDeletionAsync()
throws IOException, KeeperException, InterruptedException {
final CountDownLatch latch = new CountDownLatch(1);
AsyncCallback.Create2Callback cb = new AsyncCallback.Create2Callback() {
@Override
public void processResult(int rc, String path, Object ctx, String name, Stat stat) {
Assert.assertEquals(ctx, "context");
latch.countDown();
}
};
zk.create("/foo", new byte[0], ZooDefs.Ids.OPEN_ACL_UNSAFE, CreateMode.CONTAINER, cb, "context");
Assert.assertTrue(latch.await(5, TimeUnit.SECONDS));
zk.create("/foo/bar", new byte[0], ZooDefs.Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT);
zk.delete("/foo/bar", -1); // should cause "/foo" to get deleted when checkContainers() is called
ContainerManager containerManager = new ContainerManager(serverFactory.getZooKeeperServer()
.getZKDatabase(), serverFactory.getZooKeeperServer().firstProcessor, 1, 100);
containerManager.checkContainers();
Thread.sleep(1000);
Assert.assertNull("Container should have been deleted", zk.exists("/foo", false));
}
@Test(timeout = 30000)
public void testCascadingDeletion()
throws IOException, KeeperException, InterruptedException {
zk.create("/foo", new byte[0], ZooDefs.Ids.OPEN_ACL_UNSAFE, CreateMode.CONTAINER);
zk.create("/foo/bar", new byte[0], ZooDefs.Ids.OPEN_ACL_UNSAFE, CreateMode.CONTAINER);
zk.create("/foo/bar/one", new byte[0], ZooDefs.Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT);
zk.delete("/foo/bar/one", -1); // should cause "/foo/bar" and "/foo" to get deleted when checkContainers() is called
ContainerManager containerManager = new ContainerManager(serverFactory.getZooKeeperServer()
.getZKDatabase(), serverFactory.getZooKeeperServer().firstProcessor, 1, 100);
containerManager.checkContainers();
Thread.sleep(1000);
containerManager
.checkContainers();
Thread.sleep(1000);
Assert.assertNull("Container should have been deleted", zk.exists("/foo/bar", false));
Assert.assertNull("Container should have been deleted", zk.exists("/foo", false));
}
@Test(timeout = 30000)
public void testFalseEmpty()
throws IOException, KeeperException, InterruptedException {
zk.create("/foo", new byte[0], ZooDefs.Ids.OPEN_ACL_UNSAFE, CreateMode.CONTAINER);
zk.create("/foo/bar", new byte[0], ZooDefs.Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT);
ContainerManager containerManager = new ContainerManager(serverFactory.getZooKeeperServer()
.getZKDatabase(), serverFactory.getZooKeeperServer().firstProcessor, 1, 100) {
@Override
protected Collection<String> getCandidates() {
return Collections.singletonList("/foo");
}
};
containerManager.checkContainers();
Thread.sleep(1000);
Assert.assertNotNull("Container should have not been deleted", zk.exists("/foo", false));
}
@Test(timeout = 30000)
public void testMaxPerMinute()
throws IOException, KeeperException, InterruptedException {
final BlockingQueue<String> queue = new LinkedBlockingQueue<String>();
RequestProcessor processor = new RequestProcessor() {
@Override
public void processRequest(Request request) throws RequestProcessorException {
queue.add(new String(request.request.array()));
}
@Override
public void shutdown() {
}
};
final ContainerManager containerManager = new ContainerManager(serverFactory.getZooKeeperServer()
.getZKDatabase(), processor, 1, 2) {
@Override
protected long getMinIntervalMs() {
return 1000;
}
@Override
protected Collection<String> getCandidates() {
return Arrays.asList("/one", "/two", "/three", "/four");
}
};
Executors.newSingleThreadExecutor().submit(new Callable<Void>() {
@Override
public Void call() throws Exception {
containerManager.checkContainers();
return null;
}
});
Assert.assertEquals(queue.poll(5, TimeUnit.SECONDS), "/one");
Assert.assertEquals(queue.poll(5, TimeUnit.SECONDS), "/two");
Assert.assertEquals(queue.size(), 0);
Thread.sleep(500);
Assert.assertEquals(queue.size(), 0);
Assert.assertEquals(queue.poll(5, TimeUnit.SECONDS), "/three");
Assert.assertEquals(queue.poll(5, TimeUnit.SECONDS), "/four");
}
private void createNoStatVerifyResult(String newName)
throws KeeperException, InterruptedException {
Assert.assertNull("Node existed before created", zk.exists(newName, false));
zk.create(newName, newName.getBytes(), ZooDefs.Ids.OPEN_ACL_UNSAFE, CreateMode.CONTAINER);
Assert.assertNotNull("Node was not created as expected",
zk.exists(newName, false));
}
private Stat createWithStatVerifyResult(String newName)
throws KeeperException, InterruptedException {
Assert.assertNull("Node existed before created", zk.exists(newName, false));
Stat stat = new Stat();
zk.create(newName, newName.getBytes(), ZooDefs.Ids.OPEN_ACL_UNSAFE, CreateMode.CONTAINER, stat);
validateCreateStat(stat, newName);
Stat referenceStat = zk.exists(newName, false);
Assert.assertNotNull("Node was not created as expected", referenceStat);
Assert.assertEquals(referenceStat, stat);
return stat;
}
private void validateCreateStat(Stat stat, String name) {
Assert.assertEquals(stat.getCzxid(), stat.getMzxid());
Assert.assertEquals(stat.getCzxid(), stat.getPzxid());
Assert.assertEquals(stat.getCtime(), stat.getMtime());
Assert.assertEquals(0, stat.getCversion());
Assert.assertEquals(0, stat.getVersion());
Assert.assertEquals(0, stat.getAversion());
Assert.assertEquals(0, stat.getEphemeralOwner());
Assert.assertEquals(name.length(), stat.getDataLength());
Assert.assertEquals(0, stat.getNumChildren());
}
}