Execute HTTP requests with Ruby's net/http

http_request.rb

require "net/http"
require "json"

# Execute HTTP requests
# How to use
# http_request({
#   "uri" => "...", # Use URI::Parser
#   "method" => "...",
#   "payload" => "...",
#   "headers" => "...",
# })
# returns data, message, status
def http_request(params)
  default_params = {
    "uri" => "",
    "method" => "GET",
    "payload" => {},
    "headers" => {
      "Content-Type" => "application/json; charset=utf-8"
    }
  }
  options = default_params.merge!(params)
  uri = options["uri"]
  data = nil
  message = ""
  status = "error"
  if !uri.blank?
    http_session = Net::HTTP.new(uri.host, uri.port)
    if uri.scheme === "https"
      http_session.use_ssl = true
      http_session.verify_mode = OpenSSL::SSL::VERIFY_NONE
    end
    begin
      http_session.start do |http|
        response = http.send_request(
          options["method"].upcase,
          options["uri"].request_uri,
          options["payload"].to_json,
          options["headers"]
        )
        case response
          when Net::HTTPSuccess
            status = "success"
            begin
              data = JSON.parse(response.body)
            rescue JSON::ParserError => error
              message = "not a json response"
            end
          when Net::HTTPUnauthorized
            message = "#{response.message}: username and password set correctly?"
          when Net::HTTPServerError
            message = "#{response.message}: try again later?"
          else
            message = response.message
        end
      end
    rescue Timeout::Error, Errno::EINVAL, Errno::ECONNRESET, EOFError,
           Net::HTTPBadResponse, Net::HTTPHeaderSyntaxError, Net::ProtocolError => error
      message = "#{error}"
    end
  end
  return data, message, status
end