rx-elasticsearch/README.md

RxJS Observables for the Elasticsearch client

# Rx-elasticsearch [![Build Status](https://api.travis-ci.org/luminis-ams/rx-elasticsearch.svg?branch=master)](https://travis-ci.org/luminis-ams/rx-elasticsearch) [![npm version](https://badge.fury.io/js/rx-elasticsearch.svg)](https://badge.fury.io/js/rx-elasticsearch)
RxJS Observables for the Elasticsearch javascript client

Install with npm
` npm install rx-elasticsearch --save`

Wrap existing Elasticsearch client
```js
import RxClient from 'rx-elasticsearch';
import * as elasticsearch from 'elasticsearch';

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

let rxClient = new RxClient(client);
```

Initialization without Elasticsearch client
```js
import RxClient from 'rx-elasticsearch';

let rxClient = RxClient.create({
    host: 'localhost:9200',
    log: 'info'
});
```

Usage is the same as the Elasticsearch client, but returns observables.
```js
let params = {
    index: 'yourIndex',
    body: {
        query: {
            match_all: {}
        }
    }
};

rxClient
    .search(params)
    .subscribe(
        (res) => console.log(res),
        (e) => console.error(e),
        () => console.log('done')
    );
```

With the scroll function you no longer need to call search first. This library takes care of that and clears the scroll automagicly when the scroll is finished.
```js
let params = {
    index: 'yourIndex',
    scroll: '1m',
    size: 1000,
    body: {
        query: {
            match_all: {}
        }
    }
};

rxClient
    .scroll(params)
    .subscribe(
        (res) => console.log(res),
        (e) => console.error(e),
        () => console.log('done')
    );
```

For older javascript versions
```js
var RxClient = require('rx-elasticsearch').default;
```