Building Enterprise JavaScript Applications

Indexing documents to Elasticsearch

In src/index.js, import the Elasticsearch library and initiate a client as we did before; then, in the request handler for POST /users, use the Elasticsearch JavaScript client's index method to add the payload object into the Elasticsearch index:

import elasticsearch from 'elasticsearch';const client = new elasticsearch.Client({  host: `${process.env.ELASTICSEARCH_PROTOCOL}://${process.env.ELASTICSEARCH_HOSTNAME}:${process.env.ELASTICSEARCH_PORT}`,});...app.post('/users', (req, res, next) => {  ...  client.index({    index: 'hobnob',    type: 'user',    body: req.body  })}

The index method returns a promise, which should resolve to something similar to this:

{ _index: 'hobnob',  _type: 'users', _id: 'AV7HyAlRmIBlG9P7rgWY', ...