- class Google::APIClient
- 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
- end
-