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