public void testDataSizeChange()
{
const string name = "/foo";
zk.create(name, name.getBytes(), ZooDefs.Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT);
var stat = newStat();
zk.getData(name, false, stat);
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());
zk.setData(name, (name + name).getBytes(), -1);
stat = newStat();
zk.getData(name, false, stat);
Assert.assertNotEquals(stat.getCzxid(), stat.getMzxid());
Assert.assertEquals(stat.getCzxid(), stat.getPzxid());
Assert.assertNotEquals(stat.getCtime(), stat.getMtime());
Assert.assertEquals(0, stat.getCversion());
Assert.assertEquals(1, stat.getVersion());
Assert.assertEquals(0, stat.getAversion());
Assert.assertEquals(0, stat.getEphemeralOwner());
Assert.assertEquals(name.Length * 2, stat.getDataLength());
Assert.assertEquals(0, stat.getNumChildren());
}
public void testDeleteRecursive()
{
ZooKeeper zk = createClient();
// making sure setdata works on /
zk.setData("/", "some".getBytes(), -1);
zk.create("/a", "some".getBytes(), ZooDefs.Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT);
zk.create("/a/b", "some".getBytes(), ZooDefs.Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT);
zk.create("/a/b/v", "some".getBytes(), ZooDefs.Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT);
zk.create("/a/b/v/1", "some".getBytes(), ZooDefs.Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT);
zk.create("/a/c", "some".getBytes(), ZooDefs.Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT);
zk.create("/a/c/v", "some".getBytes(), ZooDefs.Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT);
IList <string> children = zk.getChildren("/a", false);
Assert.assertEquals("2 children - b & c should be present ", children.Count, 2);
Assert.assertTrue(children.Contains("b"));
Assert.assertTrue(children.Contains("c"));
ZKUtil.deleteRecursiveAsync(zk, "/a").GetAwaiter().GetResult();
Assert.assertNull(zk.exists("/a", null));
}
public void testWatcherCorrectness()
{
ZooKeeper zk = null;
try
{
MyWatcher watcher = new MyWatcher();
zk = createClient(watcher);
string[] names = new string[10];
for (int i = 0; i < names.Length; i++)
{
string name = zk.create("/tc-", "initialvalue".getBytes(), ZooDefs.Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT_SEQUENTIAL);
names[i] = name;
Stat stat = new Stat();
zk.getData(name, watcher, stat);
zk.setData(name, "new".getBytes(), stat.getVersion());
stat = zk.exists(name, watcher);
zk.delete(name, stat.getVersion());
}
for (int i = 0; i < names.Length; i++)
{
string name = names[i];
WatchedEvent @event = watcher.events.poll(10 * 1000);
Assert.assertEquals(name, @event.getPath());
Assert.assertEquals(Watcher.Event.EventType.NodeDataChanged, @event.get_Type());
Assert.assertEquals(Watcher.Event.KeeperState.SyncConnected, @event.getState());
@event = watcher.events.poll(10 * 1000);
Assert.assertEquals(name, @event.getPath());
Assert.assertEquals(Watcher.Event.EventType.NodeDeleted, @event.get_Type());
Assert.assertEquals(Watcher.Event.KeeperState.SyncConnected, @event.getState());
}
}
finally
{
if (zk != null)
{
zk.close();
}
}
}
private void performClientTest(bool withWatcherObj)
{
ZooKeeper zk = null;
try {
MyWatcher watcher = new MyWatcher();
zk = createClient(watcher);
LOG.info("Before create /benwashere");
zk.create("/benwashere", "".getBytes(), ZooDefs.Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT);
LOG.info("After create /benwashere");
try {
zk.setData("/benwashere", "hi".getBytes(), 57);
Assert.fail("Should have gotten BadVersion exception");
}
catch (KeeperException.BadVersionException) {
// expected that
}
catch (KeeperException) {
Assert.fail("Should have gotten BadVersion exception");
}
LOG.info("Before delete /benwashere");
zk.delete("/benwashere", 0);
LOG.info("After delete /benwashere");
zk.close();
//LOG.info("Closed client: " + zk.describeCNXN());
Thread.Sleep(2000);
zk = createClient(watcher);
//LOG.info("Created a new client: " + zk.describeCNXN());
LOG.info("Before delete /");
try {
zk.delete("/", -1);
Assert.fail("deleted root!");
}
catch (KeeperException.BadArgumentsException) {
// good, expected that
}
Stat stat = new Stat();
// Test basic create, ls, and getData
zk.create("/pat", "Pat was here".getBytes(), ZooDefs.Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT);
LOG.info("Before create /ben");
zk.create("/pat/ben", "Ben was here".getBytes(), ZooDefs.Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT);
LOG.info("Before getChildren /pat");
List <string> children = zk.getChildren("/pat", false);
Assert.assertEquals(1, children.Count);
Assert.assertEquals("ben", children[0]);
IList <string> children2 = zk.getChildren("/pat", false, null);
Assert.assertEquals(children, children2);
string value = Encoding.UTF8.GetString(zk.getData("/pat/ben", false, stat));
Assert.assertEquals("Ben was here", value);
// Test stat and watch of non existent node
try {
if (withWatcherObj)
{
Assert.assertEquals(null, zk.exists("/frog", watcher));
}
else
{
Assert.assertEquals(null, zk.exists("/frog", true));
}
LOG.info("Comment: asseting passed for frog setting /");
}
catch (KeeperException.NoNodeException) {
// OK, expected that
}
zk.create("/frog", "hi".getBytes(), ZooDefs.Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT);
// the first poll is just a session delivery
LOG.info("Comment: checking for events length " + watcher.events.size());
WatchedEvent @event = watcher.events.poll(10 * 1000);
Assert.assertEquals("/frog", @event.getPath());
Assert.assertEquals(Watcher.Event.EventType.NodeCreated, @event.get_Type());
Assert.assertEquals(Watcher.Event.KeeperState.SyncConnected, @event.getState());
// Test child watch and create with sequence
zk.getChildren("/pat/ben", true);
for (int i = 0; i < 10; i++)
{
zk.create("/pat/ben/" + i + "-", Convert.ToString(i).getBytes(), ZooDefs.Ids.OPEN_ACL_UNSAFE,
CreateMode.PERSISTENT_SEQUENTIAL);
}
children = zk.getChildren("/pat/ben", false);
children.Sort();
Assert.assertEquals(10, children.Count);
for (int i = 0; i < 10; i++)
{
string name = children[i];
Assert.assertTrue("starts with -", name.StartsWith(i + "-", StringComparison.Ordinal));
byte[] b;
if (withWatcherObj)
{
b = zk.getData("/pat/ben/" + name, watcher, stat);
}
else
{
b = zk.getData("/pat/ben/" + name, true, stat);
}
Assert.assertEquals(i, int.Parse(Encoding.UTF8.GetString(b)));
zk.setData("/pat/ben/" + name, "new".getBytes(), stat.getVersion());
if (withWatcherObj)
{
stat = zk.exists("/pat/ben/" + name, watcher);
}
else
{
stat = zk.exists("/pat/ben/" + name, true);
}
zk.delete("/pat/ben/" + name, stat.getVersion());
}
@event = watcher.events.poll(10 * 1000);
Assert.assertEquals("/pat/ben", @event.getPath());
Assert.assertEquals(Watcher.Event.EventType.NodeChildrenChanged, @event.get_Type());
Assert.assertEquals(Watcher.Event.KeeperState.SyncConnected, @event.getState());
for (int i = 0; i < 10; i++)
{
@event = watcher.events.poll(10 * 1000);
string name = children[i];
Assert.assertEquals("/pat/ben/" + name, @event.getPath());
Assert.assertEquals(Watcher.Event.EventType.NodeDataChanged, @event.get_Type());
Assert.assertEquals(Watcher.Event.KeeperState.SyncConnected, @event.getState());
@event = watcher.events.poll(10 * 1000);
Assert.assertEquals("/pat/ben/" + name, @event.getPath());
Assert.assertEquals(Watcher.Event.EventType.NodeDeleted, @event.get_Type());
Assert.assertEquals(Watcher.Event.KeeperState.SyncConnected, @event.getState());
}
zk.create("/good\u0040path", "".getBytes(), ZooDefs.Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT);
zk.create("/duplicate", "".getBytes(), ZooDefs.Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT);
try {
zk.create("/duplicate", "".getBytes(), ZooDefs.Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT);
Assert.fail("duplicate create allowed");
}
catch (KeeperException.NodeExistsException) {
// OK, expected that
}
}
finally {
if (zk != null)
{
zk.close();
}
}
}
public void testMutipleWatcherObjs()
{
ZooKeeper zk = createClient(new CountdownWatcher());
try {
MyWatcher[] watchers = new MyWatcher[100];
MyWatcher[] watchers2 = new MyWatcher[watchers.Length];
for (int i = 0; i < watchers.Length; i++)
{
watchers[i] = new MyWatcher();
watchers2[i] = new MyWatcher();
zk.create("/foo-" + i, ("foodata" + i).getBytes(), ZooDefs.Ids.OPEN_ACL_UNSAFE,
CreateMode.PERSISTENT);
}
Stat stat = new Stat();
//
// test get/exists with single set of watchers
// get all, then exists all
//
for (int i = 0; i < watchers.Length; i++)
{
Assert.assertNotNull(zk.getData("/foo-" + i, watchers[i], stat));
}
for (int i = 0; i < watchers.Length; i++)
{
Assert.assertNotNull(zk.exists("/foo-" + i, watchers[i]));
}
// trigger the watches
for (int i = 0; i < watchers.Length; i++)
{
zk.setData("/foo-" + i, ("foodata2-" + i).getBytes(), -1);
zk.setData("/foo-" + i, ("foodata3-" + i).getBytes(), -1);
}
for (int i = 0; i < watchers.Length; i++)
{
WatchedEvent @event = watchers[i].events.poll(10 * 1000);
Assert.assertEquals("/foo-" + i, @event.getPath());
Assert.assertEquals(Watcher.Event.EventType.NodeDataChanged, @event.get_Type());
Assert.assertEquals(Watcher.Event.KeeperState.SyncConnected, @event.getState());
// small chance that an unexpected message was delivered
// after this check, but we would catch that next time
// we check events
Assert.assertEquals(0, watchers[i].events.size());
}
//
// test get/exists with single set of watchers
// get/exists together
//
for (int i = 0; i < watchers.Length; i++)
{
Assert.assertNotNull(zk.getData("/foo-" + i, watchers[i], stat));
Assert.assertNotNull(zk.exists("/foo-" + i, watchers[i]));
}
// trigger the watches
for (int i = 0; i < watchers.Length; i++)
{
zk.setData("/foo-" + i, ("foodata4-" + i).getBytes(), -1);
zk.setData("/foo-" + i, ("foodata5-" + i).getBytes(), -1);
}
for (int i = 0; i < watchers.Length; i++)
{
WatchedEvent @event = watchers[i].events.poll(10 * 1000);
Assert.assertEquals("/foo-" + i, @event.getPath());
Assert.assertEquals(Watcher.Event.EventType.NodeDataChanged, @event.get_Type());
Assert.assertEquals(Watcher.Event.KeeperState.SyncConnected, @event.getState());
// small chance that an unexpected message was delivered
// after this check, but we would catch that next time
// we check events
Assert.assertEquals(0, watchers[i].events.size());
}
//
// test get/exists with two sets of watchers
//
for (int i = 0; i < watchers.Length; i++)
{
Assert.assertNotNull(zk.getData("/foo-" + i, watchers[i], stat));
Assert.assertNotNull(zk.exists("/foo-" + i, watchers2[i]));
}
// trigger the watches
for (int i = 0; i < watchers.Length; i++)
{
zk.setData("/foo-" + i, ("foodata6-" + i).getBytes(), -1);
zk.setData("/foo-" + i, ("foodata7-" + i).getBytes(), -1);
}
for (int i = 0; i < watchers.Length; i++)
{
WatchedEvent @event = watchers[i].events.poll(10 * 1000);
Assert.assertEquals("/foo-" + i, @event.getPath());
Assert.assertEquals(Watcher.Event.EventType.NodeDataChanged, @event.get_Type());
Assert.assertEquals(Watcher.Event.KeeperState.SyncConnected, @event.getState());
// small chance that an unexpected message was delivered
// after this check, but we would catch that next time
// we check events
Assert.assertEquals(0, watchers[i].events.size());
// watchers2
WatchedEvent event2 = watchers2[i].events.poll(10 * 1000);
Assert.assertEquals("/foo-" + i, event2.getPath());
Assert.assertEquals(Watcher.Event.EventType.NodeDataChanged, event2.get_Type());
Assert.assertEquals(Watcher.Event.KeeperState.SyncConnected, event2.getState());
// small chance that an unexpected message was delivered
// after this check, but we would catch that next time
// we check events
Assert.assertEquals(0, watchers2[i].events.size());
}
}
finally {
if (zk != null)
{
zk.close();
}
}
}
public void testExistsSync()
{
Assert.assertNull(lsnr.exists("/foo", true));
Assert.assertNull(lsnr.exists("/foo/bar", true));
client.create("/foo", "parent".getBytes(), ZooDefs.Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT);
expected.Add(Watcher.Event.EventType.NodeCreated);
client.create("/foo/bar", "child".getBytes(), ZooDefs.Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT);
expected.Add(Watcher.Event.EventType.NodeCreated);
verify();
Assert.assertNotNull(lsnr.exists("/foo", true));
Assert.assertNotNull(lsnr.exists("/foo/bar", true));
try
{
Assert.assertNull(lsnr.exists("/car", true));
client.setData("/car", "missing".getBytes(), -1);
Assert.fail();
}
catch (KeeperException e)
{
Assert.assertEquals(KeeperException.Code.NONODE, e.getCode());
Assert.assertEquals("/car", e.getPath());
}
try
{
Assert.assertNull(lsnr.exists("/foo/car", true));
client.setData("/foo/car", "missing".getBytes(), -1);
Assert.fail();
}
catch (KeeperException e)
{
Assert.assertEquals(KeeperException.Code.NONODE, e.getCode());
Assert.assertEquals("/foo/car", e.getPath());
}
client.setData("/foo", "parent".getBytes(), -1);
expected.Add(Watcher.Event.EventType.NodeDataChanged);
client.setData("/foo/bar", "child".getBytes(), -1);
expected.Add(Watcher.Event.EventType.NodeDataChanged);
verify();
Assert.assertNotNull(lsnr.exists("/foo", true));
Assert.assertNotNull(lsnr.exists("/foo/bar", true));
client.delete("/foo/bar", -1);
expected.Add(Watcher.Event.EventType.NodeDeleted);
client.delete("/foo", -1);
expected.Add(Watcher.Event.EventType.NodeDeleted);
verify();
}
public void testChrootSynchronous()
{
ZooKeeper zk1 = createClient();
try
{
zk1.create("/ch1", null, ZooDefs.Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT);
}
finally
{
if (zk1 != null)
{
zk1.close();
}
}
ZooKeeper zk2 = createClient("/ch1");
try
{
Assert.assertEquals("/ch2", zk2.create("/ch2", null, ZooDefs.Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT));
}
finally
{
if (zk2 != null)
{
zk2.close();
}
}
zk1 = createClient();
zk2 = createClient("/ch1");
try
{
// check get
MyWatcher w1 = new MyWatcher("/ch1");
Assert.assertNotNull(zk1.exists("/ch1", w1));
MyWatcher w2 = new MyWatcher("/ch1/ch2");
Assert.assertNotNull(zk1.exists("/ch1/ch2", w2));
MyWatcher w3 = new MyWatcher("/ch2");
Assert.assertNotNull(zk2.exists("/ch2", w3));
// set watches on child
MyWatcher w4 = new MyWatcher("/ch1");
zk1.getChildren("/ch1", w4);
MyWatcher w5 = new MyWatcher("/");
zk2.getChildren("/", w5);
// check set
zk1.setData("/ch1", "1".getBytes(), -1);
zk2.setData("/ch2", "2".getBytes(), -1);
// check watches
Assert.assertTrue(w1.matches());
Assert.assertTrue(w2.matches());
Assert.assertTrue(w3.matches());
// check exceptions
try
{
zk2.setData("/ch3", "3".getBytes(), -1);
}
catch (KeeperException.NoNodeException e)
{
Assert.assertEquals("/ch3", e.getPath());
}
Assert.assertEquals("1".getBytes(), zk1.getData("/ch1", false, null));
Assert.assertEquals("2".getBytes(), zk1.getData("/ch1/ch2", false, null));
Assert.assertEquals("2".getBytes(), zk2.getData("/ch2", false, null));
// check delete
zk2.delete("/ch2", -1);
Assert.assertTrue(w4.matches());
Assert.assertTrue(w5.matches());
zk1.delete("/ch1", -1);
Assert.assertNull(zk1.exists("/ch1", false));
Assert.assertNull(zk1.exists("/ch1/ch2", false));
Assert.assertNull(zk2.exists("/ch2", false));
}
finally
{
if (zk1 != null)
{
zk1.close();
}
if (zk2 != null)
{
zk2.close();
}
}
}