merge

1 files changed, 120 insertions, 0 deletions

diff --git a/lib/mauve/configuration_builders/logger.rb b/lib/mauve/configuration_builders/logger.rb
new file mode 100644
index 0000000..a1d0388
--- /dev/null
+++ b/lib/mauve/configuration_builders/logger.rb
@@ -0,0 +1,120 @@
+# encoding: UTF-8
+require 'log4r'
+require 'mauve/configuration_builder'
+
+module Mauve
+  module ConfigurationBuilders
+
+    class LoggerOutputter < ObjectBuilder
+
+      def builder_setup(outputter)
+        @outputter = outputter.capitalize+"Outputter"
+
+        begin
+          Log4r.const_get(@outputter)
+        rescue
+          require "log4r/outputter/#{@outputter.downcase}"
+        end
+
+        @outputter_name = "Mauve-"+5.times.collect{rand(36).to_s(36)}.join
+
+        @args = {}
+      end
+
+      def result
+        @result ||= Log4r.const_get(@outputter).new("Mauve", @args)
+      end
+
+      def format(f)
+        result.formatter = Log4r::PatternFormatter.new(:pattern => f)
+      end
+
+      #
+      # This is needed to be able to pass arbitrary arguments to Log4r
+      # outputters.
+      #
+      def method_missing(name, value=nil)
+        if value.nil?
+          result.send(name.to_sym)
+        else
+          @args[name.to_sym] = value
+        end
+      end
+
+    end
+
+    class Logger < ObjectBuilder
+
+      is_builder "outputter", LoggerOutputter
+
+      def builder_setup
+        @result         = Log4r::Logger.new('Mauve')
+        @default_format = nil
+        @default_level  = Log4r::RootLogger.instance.level
+      end
+
+      def default_format(f)
+        begin
+          @default_formatter = Log4r::PatternFormatter.new(:pattern => f)
+        rescue SyntaxError 
+          raise BuildException.new "Bad log format #{f.inspect}"
+        end
+        #
+        # Set all current outputters
+        #
+        result.outputters.each do |o|
+          o.formatter = @default_formatter if o.formatter.is_a?(Log4r::DefaultFormatter)
+        end
+      end
+
+      def default_level(l)
+        if Log4r::Log4rTools.valid_level?(l)
+          @default_level = l
+        else
+          raise "Bad default level set for the logger #{l}.inspect"
+        end
+
+        result.outputters.each do |o|
+          o.level = @default_level if o.level == Log4r::RootLogger.instance.level
+        end
+      end
+
+      def created_outputter(outputter)
+        #
+        # Set the formatter and level for any newly created outputters
+        #
+        if @default_formatter
+          outputter.formatter = @default_formatter if outputter.formatter.is_a?(Log4r::DefaultFormatter)
+        end
+
+        if @default_level
+          outputter.level = @default_level if outputter.level == Log4r::RootLogger.instance.level
+        end
+
+        result.outputters << outputter
+      end
+    end
+  end
+
+  # 
+  # this should live in Logger but can't due to
+  # http://briancarper.net/blog/ruby-instance_eval_constant_scoping_broken
+  #
+  module LoggerConstants
+    Log4r.define_levels(*Log4r::Log4rConfig::LogLevels) # ensure levels are loaded
+
+    DEBUG = Log4r::DEBUG
+    INFO  = Log4r::INFO
+    WARN  = Log4r::WARN
+    ERROR = Log4r::ERROR
+    FATAL = Log4r::FATAL
+  end
+
+  class ConfigurationBuilder < ObjectBuilder
+
+    include LoggerConstants
+
+    is_builder "logger", ConfigurationBuilders::Logger
+
+  end
+end