Class: Google::APIClient

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

Instance Method Summary collapse

Instance Method Details

#discovery_document(api, version) ⇒ Object 



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# File 'lib/arvados.rb', line 109

def discovery_document(api, version)
  api = api.to_s
  discovery_uri = self.discovery_uri(api, version)
  discovery_uri_hash = Digest::MD5.hexdigest(discovery_uri)
  return @discovery_documents[discovery_uri_hash] ||=
    begin
      # fetch new API discovery doc if stale
      cached_doc = File.expand_path "~/.cache/arvados/discovery-#{discovery_uri_hash}.json" rescue nil
      if cached_doc.nil? or not File.exist?(cached_doc) or (Time.now - File.mtime(cached_doc)) > 86400
        response = self.execute!(:http_method => :get,
                                 :uri => discovery_uri,
                                 :authenticated => false)
        begin
          FileUtils.makedirs(File.dirname cached_doc)
          File.open(cached_doc, 'w') do |f|
            f.puts response.body
          end
        rescue
          return JSON.load response.body
        end
      end

      File.open(cached_doc) { |f| JSON.load f }
    end
end