# File lib/grape/middleware/error.rb, line 21 def call!(env) @env = env begin error_response(catch(:error){ return @app.call(@env) }) rescue Exception => e is_rescuable = rescuable?(e.class) if e.is_a?(Grape::Exceptions::Base) && !is_rescuable handler = lambda {|e| error_response(e) } else raise unless is_rescuable handler = options[:rescue_handlers][e.class] || options[:rescue_handlers][:all] end handler.nil? ? handle_error(e) : self.instance_exec(e, &handler) end end
# File lib/grape/middleware/error.rb, line 7 def default_options { :default_status => 403, # default status returned on error :default_message => "", :format => :txt, :formatters => {}, :error_formatters => {}, :rescue_all => false, # true to rescue all exceptions :rescue_options => { :backtrace => false }, # true to display backtrace :rescue_handlers => {}, # rescue handler blocks :rescued_errors => [] } end
# File lib/grape/middleware/error.rb, line 48 def error_response(error = {}) status = error[:status] || options[:default_status] message = error[:message] || options[:default_message] headers = {'Content-Type' => content_type} headers.merge!(error[:headers]) if error[:headers].is_a?(Hash) backtrace = error[:backtrace] || [] rack_response(format_message(message, backtrace), status, headers) end
# File lib/grape/middleware/error.rb, line 61 def format_message(message, backtrace) format = env['api.format'] || options[:format] formatter = Grape::ErrorFormatter::Base.formatter_for(format, options) throw :error, :status => 406, :message => "The requested format '#{format}' is not supported." unless formatter formatter.call(message, backtrace, options, env) end
# File lib/grape/middleware/error.rb, line 44 def handle_error(e) error_response({ :message => e.message, :backtrace => e.backtrace }) end
# File lib/grape/middleware/error.rb, line 57 def rack_response(message, status = options[:default_status], headers = { 'Content-Type' => content_type }) Rack::Response.new([ message ], status, headers).finish end
# File lib/grape/middleware/error.rb, line 40 def rescuable?(klass) options[:rescue_all] || (options[:rescued_errors] || []).include?(klass) end