passing json data in elasticsearch get request using rest-client ruby gem

Question

How do I execute the below query(given in doc) using rest client.

curl -XGET 'http://localhost:9200/twitter/tweet/_search' -d '{
    "query" : {
        "term" : { "user" : "kimchy" }
    }
}
'

I tried doing this:

q = '{
    "query" : {
        "term" : { "user" : "kimchy" }
    }
}
'

r = JSON.parse(RestClient.get('http://localhost:9200/twitter/tweet/_search', q))

This threw up an error:

in `process_url_params': undefined method `delete_if' for #<String:0x8b12e18>     (NoMethodError)
    from /home/socialapps/.rvm/gems/ruby-1.9.3-p194/gems/rest-client-1.6.7/lib/restclient/request.rb:40:in `initialize'
    from /home/socialapps/.rvm/gems/ruby-1.9.3-p194/gems/rest-client-1.6.7/lib/restclient/request.rb:33:in `new'
    from /home/socialapps/.rvm/gems/ruby-1.9.3-p194/gems/rest-client-1.6.7/lib/restclient/request.rb:33:in `execute'
    from /home/socialapps/.rvm/gems/ruby-1.9.3-p194/gems/rest-client-1.6.7/lib/restclient.rb:68:in `get'
    from get_check2.rb:12:in `<main>'

When I do the same using RestClient.post, it gives me the right results!. But the elasticsearch doc uses XGET in curl command for the search query and not XPOST. How do I get the RestClient.get method to work?

If there are alternate/better ways of doing this action, please suggest.

Pneumatograph

i think that this has nothing to do with get or post but with the code you have in get_check2.rb. what is the actual response that you get from ES using RestClient? it's probably something that you handling the wrong way! – Chromophore

Elasticsearch queries seems to work just fine even you use a POST request. So we can use a simple rest client. – Unpleasantness

Answer 1

RestClient can't send request bodies with GET. You've got two options:

Pass your query as the source URL parameter:

require 'rest_client'
require 'json'

# RestClient.log=STDOUT # Optionally turn on logging

q = '{
    "query" : { "term" : { "user" : "kimchy" } }
}
'
r = JSON.parse \
      RestClient.get( 'http://localhost:9200/twitter/tweet/_search',
                      params: { source: q } )

puts r

...or just use POST.

---

UPDATE: Fixed incorrect passing of the URL parameter, notice the params Hash.

Hewett

Coffescript doesn't seem to support GET Bodies either. – Reverence

Answer 2

In case anyone else finds this. It IS possible, although not recommended, to send request bodies with GET by using the internal Request method that the main API uses to create it's calls.

RestClient::Request.execute( method: :get, 
                             url: 'http://localhost:9200/twitter/tweet/_search',
                             payload: {source: q} )

See here for more details.

Spectra