ZooKeeper client writes in async rust.
- No callbacks.
- No catch-all watcher.
StateWatcher
tracks session state updates.OneshotWatcher
tracks oneshot ZooKeeper node event.PersistentWatcher
tracks persistent and recursive persistent ZooKeeper node events.- No event type
XyzWatchRemoved
as there is no way to receive such event after watchers dropped. - Cloneable
Client
andClient::chroot
enables session sharing cross multiple different rooted clients.
use zookeeper_client as zk;
let path = "/abc";
let data = "path_data".as_bytes().to_vec();
let child_path = "/abc/efg";
let child_data = "child_path_data".as_bytes().to_vec();
let create_options = zk::CreateMode::Persistent.with_acls(zk::Acls::anyone_all());
let cluster = "localhost:2181";
let client = zk::Client::connect(cluster).await.unwrap();
let (_, stat_watcher) = client.check_and_watch_stat(path).await.unwrap();
let (stat, _) = client.create(path, &data, &create_options).await.unwrap();
assert_eq!((data.clone(), stat), client.get_data(path).await.unwrap());
let event = stat_watcher.changed().await;
assert_eq!(event.event_type, zk::EventType::NodeCreated);
assert_eq!(event.path, path);
let path_client = client.clone().chroot(path).unwrap();
assert_eq!((data, stat), path_client.get_data("/").await.unwrap());
let (_, _, child_watcher) = client.get_and_watch_children(path).await.unwrap();
let (child_stat, _) = client.create(child_path, &child_data, &create_options).await.unwrap();
let child_event = child_watcher.changed().await;
assert_eq!(child_event.event_type, zk::EventType::NodeChildrenChanged);
assert_eq!(child_event.path, path);
let relative_child_path = child_path.strip_prefix(path).unwrap();
assert_eq!((child_data.clone(), child_stat), path_client.get_data(relative_child_path).await.unwrap());
let (_, _, event_watcher) = client.get_and_watch_data("/").await.unwrap();
drop(client);
drop(path_client);
let session_event = event_watcher.changed().await;
assert_eq!(session_event.event_type, zk::EventType::Session);
assert_eq!(session_event.session_state, zk::SessionState::Closed);
use zookeeper_client as zk;
let cluster = "localhost:2181";
let client = zk::Client::connect(cluster).await.unwrap();
let prefix = zk::LockPrefix::new_curator("/app/locks", "latch-").unwrap();
let options = zk::LockOptions::new(zk::Acls::anyone_all())
.with_ancestor_options(zk::CreateMode::Persistent.with_acls(zk::Acls::anyone_all()))
.unwrap();
let latch = client.lock(prefix, b"", options).await.unwrap();
latch.create("/app/data", b"data", &zk::CreateMode::Ephemeral.with_acls(zk::Acls::anyone_all())).await.unwrap();
For more examples, see zookeeper.rs.
- Sasl authentication
The MIT License (MIT). See LICENSE for the full license text.