Работа с ElasticSearch из node.js

conf.coffee

esc         = require 'elasticsearchclient'

###
  Elastic search module
###
serverOptions =
  host: process.env.esHost || 'localhost'
  port: 9200    
  secure: false
  
exports.esClient = esClient = new esc serverOptions

testController.coffee

#### Config
{esClient, model} = require '../conf'
async             = require 'async'


#### Class
class DiscoverController extends require('./basicController') 
  
  _searchOutput: (savedData) ->    
    data = JSON.parse(savedData.join "")           
    if data.hits
      maxScore  = data.hits.max_score  
      output    = data.hits.hits
    else
      output = []

  search: ->
    query =
      multi_match:
        query: @context.discover_search_query || ""
        use_dis_max: true
        fields: ["description", "module_name^2", "owner^2", "language^1.25"]
    
    options =
      size: 100
    
    #TODO: add variable size and offset handling
            
    savedData = []
    esClient.search('mongomodules', 'module', {query}, options)
    .on('data', (data) => savedData.push data)
    .on('done', => @_searchOutput savedData)
    .on('error', (error)=>
      return @res.json error, 500 if @req.xhr
        
      @context.searchError = true
      @index()
    )
    .exec()

module.exports = (req,res)->
  new DiscoverController req, res