config.rb in whirled_peas-0.8.0

- old
+ new
@@ -1,21 +1,71 @@
+require 'logger'
+
 module WhirledPeas
   class Config
-    attr_writer :driver, :template_factory
-    attr_accessor :loading_template_factory
+    # Refreshed rate measured in frames per second
+    DEFAULT_REFRESH_RATE = 30
 
-    def driver
-      unless @driver
-        raise ConfigurationError, 'driver must be configured'
+    DEFAULT_LOG_LEVEL = Logger::INFO
+    DEFAULT_LOG_FILE = 'whirled_peas.log'
+
+    # This formatter expects a loggers to send `progname` in each log call. This value
+    # should be an all uppercase version of the module or class that is invoking the
+    # logger. Ruby's logger supports setting this value on a per-log statement basis
+    # when the log message is passed in through a block:
+    #
+    #   logger.<level>(progname, &block)
+    #
+    # E.g.
+    #
+    #   class Foo
+    #     def bar
+    #       logger.warn('FOO') { 'Something fishy happened in #bar' }
+    #     end
+    #   end
+    #
+    # The block format also has the advantage that the evaluation of the block only
+    # occurs if the message gets logged. So expensive to calculate debug statements
+    # will not impact the performance of the application if the log level is INFO or
+    # higher.
+    DEFAULT_FORMATTER = proc do |severity, datetime, progname, msg|
+      # Convert an instance of an exception into a nicely formatted message string
+      if msg.is_a?(Exception)
+        msg = %Q(#{msg.class}: #{msg.to_s}\n    #{msg.backtrace.join("\n    ")})
       end
-      @driver
+      "[#{severity}] #{datetime.strftime('%Y-%m-%dT%H:%M:%S.%L')} (#{progname}) - #{msg}\n"
     end
 
+    attr_writer :application, :template_factory, :refresh_rate, :log_level, :log_formatter, :log_file
+
+    def application
+      unless @application
+        raise ConfigurationError, 'application must be configured'
+      end
+      @application
+    end
+
     def template_factory
       unless @template_factory
         raise ConfigurationError, 'template_factory must be configured'
       end
       @template_factory
+    end
+
+    def refresh_rate
+      @refresh_rate || DEFAULT_REFRESH_RATE
+    end
+
+    def log_level
+      @log_level || DEFAULT_LOG_LEVEL
+    end
+
+    def log_formatter
+      @log_formatter || DEFAULT_FORMATTER
+    end
+
+    def log_file
+      @log_file || DEFAULT_LOG_FILE
     end
   end
   private_constant :Config
 end