@edgeros/eldb-client

@edgeros/eldb-client

@edgeros/eldb-client is an etcdshim, similar to @edgeros/etcd3 support etcd and sqlite as persistent engine.

sqlite will be supported in v2

• Support api:

  KV Lease Watch

Quickstart

• Install

npm install --save @edgeros/eldb-client 

• Usage

kv,watch,lease api is like etcd3

// etcd
import { DBClient } from '@edgeros/eldb-client'

async function foo () {
  const options = {
    etcd: {
      hosts: '10.12.0.204:2379'
    }
  }
  const client =  new DBClient(options)
  await client.init()
  // kv
  await client.put('foo1').value('bar1'),
  await client.put('foo2').value('bar2'),
  await client.put('foo3').value('{"value":"bar3"}'),
  console.log(await client.get('foo1').string())
  console.log(await client.get('foo2').buffer())
  console.log(await client.get('foo3').json())

  // lease
  const lease = client.lease(100)
  await lease.put('leased').value('foo')
  await lease.revoke()

  // watch
  const watcher = await client.watch().key('foo1').watcher()
  watcher.on('connecting', () => console.log('connecting'))
  watcher.on('connected', () => console.log('connected'))
  watcher.on('put', (kv) => console.log('put', kv))
  watcher.on('delete', (kv) => console.log('delete', kv))
  await watcher.cancel()

  client.close()
}

Versions

• v1: support etcd (✔)
• v2: support sqlite (...)
• v3: support db compact (...)