es7 + https + ca_file

[DavidGoodwin]

Hi,
We have an Es7 cluster, and I had to make a few changes to this plugin for it to talk to it. Mostly around the fact we need to use https when talking to ES, and have a custom ca_file to use with openssl etc.

so, I did :

1 . Specified the 'host' env var as https://whatever-server
2. Changed the 'fetch(resource)' function to be :

def fetch(resource)
    uri = URI("" + @host + ":" + @port.to_s + resource)
    http = Net::HTTP.new(uri.host, uri.port)
    http.use_ssl = (uri.scheme == 'https')
    if(http.use_ssl?) 
      http.ca_file = "/etc/whatever/es7.crt"
      http.use_ssl = true
      http.verify_mode = OpenSSL::SSL::VERIFY_NONE
    end

    req = Net::HTTP::Get.new(uri)
    unless @user.empty?
      req.basic_auth @user, @pass
    end

    response = http.request(req)
    return JSON.parse(response.body)
end

after that, it seems to work.

Apologies for what's probably not very good ruby. I suspect the 'ca_file' should really be handled through another ENV thing really.

Thanks for this plugin though ;)