Simple JSON API Ruby Client

simple_api_client.rb

require 'net/http'
require 'json'

class Client

  def call(method, url, path=nil, headers={}, body=nil, timeout=60)
    net_class = Object.const_get("Net::HTTP::#{constantize(method)}")

    uri = URI("#{url}#{path}")

    response = Net::HTTP.start(uri.host, uri.port, use_ssl: uri.scheme == 'https', read_timeout: timeout) do |http|
      request = net_class.new uri.request_uri

      headers.each { |header, value| request[header] = value }
      request.body = body.to_json if body
      request.content_type = 'application/json;charset=UTF-8'

      http.request request
    end

    json_body = JSON.parse(response.body) if response.body
    return response.code, json_body
  end

  def constantize(str)
    str.to_s.split('_').collect(&:capitalize).join
  end
end

# usage
client = Client.new
http_code, json_body = client.call(:get, 'https://example.com')