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Elastic Docs ›Elasticsearch JavaScript Client [8.15] ›Integrations

Transport

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Transport

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This class is responsible for performing the request to Elasticsearch and handling errors, it also handles sniffing.

const { Client } = require('@elastic/elasticsearch')
const { Transport } = require('@elastic/transport')

class MyTransport extends Transport {
  request (params, options, callback) {
    // your code
  }
}

const client = new Client({
    Transport: MyTransport
})

Sometimes you need to inject a small snippet of your code and then continue to use the usual client code. In such cases, call super.method:

class MyTransport extends Transport {
  request (params, options, callback) {
    // your code
    return super.request(params, options, callback)
  }
}

Supported content types

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  • application/json, in this case the transport will return a plain JavaScript object
  • text/plain, in this case the transport will return a plain string
  • application/vnd.mapbox-vector-tile, in this case the transport will return a Buffer
  • application/vnd.elasticsearch+json, in this case the transport will return a plain JavaScript object
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