node-zookeeper-client-async
v1.0.0
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A promises wrapper over https://github.com/alexguan/node-zookeeper-client
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node-zookeeper-client-async
A promises wrapper over https://github.com/alexguan/node-zookeeper-client
For the most part it has each method included in the original node-zookeeper-client, with
each method with a callback having an additional Async
variant (e.g. createAsync
).
The symantics are slightly different in that operations on nonexistant nodes typically do
not reject (i.e. return an error), but rather resolve null
.
Documentation
For more specific information see the documentation
Example
const zk = require('node-zookeeper-client-async');
(async function main() {
const client = zk.createAsyncClient("127.0.0.1:2181");
// connect to the server
await client.connectAsync();
console.log('connected!');
// create a node
const rootPath = await client.mkdirpAsync('/test');
console.log(`created ${rootPath}`)
// add some ephemeral nodes
await client.createAsync('/test/counter-', Buffer.from('first'), null, zk.CreateMode.EPHEMERAL_SEQUENTIAL);
await client.createAsync('/test/counter-', Buffer.from('second'), null, zk.CreateMode.EPHEMERAL_SEQUENTIAL);
// list the nodes
const nodes = await client.getChildrenAsync('/test');
// print stuff to console
console.log(`${rootPath} has the children:`)
await Promise.all(nodes.map(async node => {
const data = await client.getDataAsync(`/test/${node}`);
console.log(` ${node}: ${data.data}`);
}));
// delete everything
await client.rmrfAsync(rootPath);
// shut down
await client.closeAsync();
console.log('disconnected');
})();
Console output:
~/node-zookeeper-client-async$ node example.js
connected!
created /test
/test has the children:
counter-0000000000: first
counter-0000000001: second
disconnected