Node.js Client Examples
========================

Installation
------------

Installing the `Node.js client <https://www.npmjs.com/package/elasticsearch>`_ is simple, using the usual npm install procedure:

.. code-block:: bash

  $ npm install elasticsearch

Connecting
------------
The example below shows the connection settings using ``HTTPS``.  If you prefer to use ``HTTP``, you only need to change ``var protocol = 'http';`` and ``var port = 10202;``.

var port = 20202;
var protocol = 'https';

.. code-block:: guess

  var elasticsearch = require('elasticsearch');

  var auth = 'YOUR_USERNAME:YOUR_PASSWORD';
  var port = 20202;
  var protocol = 'https';
  var hostUrls = [
      'iad1-10202-0.es.objectrocket.com',
      'iad1-10202-1.es.objectrocket.com',
      'iad1-10202-2.es.objectrocket.com',
      'iad1-10202-3.es.objectrocket.com
  ];

  var hosts = hostUrls.map(function(host) {
      return {
          protocol: protocol,
          host: host,
          port: port,
          auth: auth
      };
  });

  var client = new elasticsearch.Client({
      hosts: hosts
  });

  client.ping({
      requestTimeout: 30000
  }, function(error) {
      if (error) {
          console.trace('Error:', error);
      } else {
          console.log('Connected!');
      }
      // on finish
      client.close();
  });


Index a document
-----------------

.. code-block:: javascript

  client.index({
    index: 'example_index',
    type: 'posts',
    id: '1',
    body: {
      user: 'me',
      post_date: new Date(),
      message: 'Hello World!'
    },
    refresh: true
  });

Search (DSL)
-------------

.. code-block:: javascript

  client.search({
    index: 'example_index',
    type: 'posts',
    body: {
      query: {
        match: {
          body: 'Hello World'
        }
      }
    }
  });

Delete a document
------------------

.. code-block:: javascript

  client.delete({
    index: 'example_index',
    type: 'posts',
    id: '1',
  })