How to call elastic search API from custom Kibana Plugin

Elastic Stack Kibana
4

Hello Team,

I was able to call elasticsearch backend using elasticsearch.js
I added server route and called the method from route file and passed the parameters using path parameters.

import elasticsearch from 'elasticsearch'

export default function (server) {

	const client = new elasticsearch.Client({
		  host: 'localhost:9200',
		  log: 'trace'
			});


  server.route({
    path: '/api/HelloWorld/search_test/{searchterm}',
    method: 'GET',
    handler(req, reply) {
      const query =  req.params.searchterm;
	  client.search({
			
		 q: query,
		 index: '<index_name>',
		}).then(function (body) {
			var hits = body.hits.hits;
		}, function (error) {
			console.trace(error.message);
		});
			reply({ response: body.hits.hits });
		}
		
	

	  });

and called this method from main.js

const { httpClient } = this.props;
    httpClient.get('../api/HelloWorld/search_test/'+this.state.searchTerm).then((response) => {
      this.setState({ resp: response.data });
	  window.alert(this.state.resp);
	});

Code repo:
Custom Kibana Plugin

Could you please let me know if this is the right way to do it or if i am missing something.

Thank you very much for your help and support.

Thank you,
Aditya