Class: CartoCSSHelper::HistoryDownloader

Inherits:
Object
  • Object
show all
Defined in:
lib/cartocss_helper/history_downloader.rb

Class Method Summary collapse

Class Method Details

.cache_filename(type, id) ⇒ Object 



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# File 'lib/cartocss_helper/history_downloader.rb', line 7

def self.cache_filename(type, id)
  url = HistoryDownloader.format_query_into_url(type, id)
  return CartoCSSHelper::Configuration.get_path_to_folder_for_history_api_cache + url.delete("/") + ".cache"
end

.cache_timestamp(type, id) ⇒ Object 



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# File 'lib/cartocss_helper/history_downloader.rb', line 20

def self.cache_timestamp(type, id)
  downloader = GenericCachedDownloader.new
  file = cache_filename(type, id)
  return downloader.get_cache_timestamp(file)
end

.format_query_into_url(type, id) ⇒ Object 



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# File 'lib/cartocss_helper/history_downloader.rb', line 30

def self.format_query_into_url(type, id)
  # documentated at https://wiki.openstreetmap.org/wiki/API_v0.6
  return "http://api.openstreetmap.org/api/0.6/#{type}/#{id}/history"
end

.get_allowed_timeout_in_seconds ⇒ Object 



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# File 'lib/cartocss_helper/history_downloader.rb', line 26

def self.get_allowed_timeout_in_seconds
  return 10 * 60
end

.run_history_query(type, id, invalidate_cache: false) ⇒ Object 



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# File 'lib/cartocss_helper/history_downloader.rb', line 12

def self.run_history_query(type, id, invalidate_cache: false)
  timeout = HistoryDownloader.get_allowed_timeout_in_seconds
  downloader = GenericCachedDownloader.new(timeout: timeout, stop_on_timeout: false)
  file = cache_filename(type, id)
  url = HistoryDownloader.format_query_into_url(type, id)
  return downloader.get_specified_resource(url, file, invalidate_cache: invalidate_cache)
end