rbot/lib/methods.rb

require 'net/http'
require 'uri'
require 'json'

def get_json(location, limit = 10)
    raise ArgumentError, 'too many HTTP redirects' if limit == 0
    uri = URI.parse(location)
    begin
        response = Net::HTTP.start(uri.host, uri.port, use_ssl: uri.scheme == 'https') do |http|
            http.open_timeout = 5
            http.read_timeout = 10
            http.get(uri.request_uri)
        end
        case response
        when Net::HTTPSuccess
            json = response.body
            JSON.parse(json)
        when Net::HTTPRedirection
            location = response['location']
            warn "redirected to #{location}"
            get_json(location, limit - 1)
        else
            puts [uri.to_s, response.value].join(" : ")
            # handle error
        end
    rescue => e
        puts [uri.to_s, e.class, e].join(" : ")
        # handle error
    end
end