Use a primitive field mapping from symbol to field class

Rakefile

@@ -1,27 +1,56 @@
 $: << ::File.expand_path('../', __FILE__)
 $: << ::File.expand_path('../spec', __FILE__)
 
-require "rubygems"
-require "rubygems/package_task"
-require "bundler/gem_tasks"
-require "benchmark/tasks"
+require 'fileutils'
+require 'rubygems'
+require 'rubygems/package_task'
+require 'bundler/gem_tasks'
+require 'benchmark/tasks'
 
-require "rspec/core/rake_task"
+require 'rspec/core/rake_task'
 
-desc "Default: run specs."
+desc 'Default: run specs.'
 task :default => :spec
 
 RSpec::Core::RakeTask.new(:spec)
 
-desc "Run specs"
-namespace :spec do
-  desc "Compile Test Protos in spec/supprt/"
-  task :compile_test_protos do |task, args|
+desc 'Run specs'
+namespace :compile do
+
+  desc 'Compile spec protos in spec/supprt/ directory'
+  task :spec do |task, args|
     proto_path = ::File.expand_path('../spec/support/', __FILE__)
     cmd = %Q{protoc --plugin=./bin/protoc-gen-ruby --ruby_out=#{proto_path} -I #{proto_path} #{File.join(proto_path, '**', '*.proto')}}
+
+    puts cmd
+    exec(cmd)
+  end
+
+  desc 'Compile rpc protos in protos/ directory'
+  task :rpc do |task, args|
+    proto_path = ::File.expand_path('../proto', __FILE__)
+    output_dir = ::File.expand_path('../tmp/rpc', __FILE__)
+    ::FileUtils.mkdir_p(output_dir)
+
+    cmd = %Q{protoc --plugin=./bin/protoc-gen-ruby --ruby_out=#{output_dir} -I #{proto_path} #{File.join(proto_path, '**', '*.proto')}}
+
     puts cmd
-    exec cmd
+    system(cmd)
+
+    files = {
+      'tmp/rpc/dynamic_discovery.pb.rb'               => 'lib/protobuf/rpc',
+      'tmp/rpc/rpc.pb.rb'                             => 'lib/protobuf/rpc',
+      'tmp/rpc/google/protobuf/descriptor.pb.rb'      => 'lib/protobuf/descriptors/google/protobuf',
+      'tmp/rpc/google/protobuf/compiler/plugin.pb.rb' => 'lib/protobuf/descriptors/google/protobuf/compiler'
+    }
+
+    files.each_pair do |source_file, destination_dir|
+      source_file = ::File.expand_path("../#{source_file}", __FILE__)
+      destination_dir = ::File.expand_path("../#{destination_dir}", __FILE__)
+      ::FileUtils::Verbose.cp(source_file, destination_dir)
+    end
   end
+
 end
 
 task :console do

lib/protobuf/descriptors/google/protobuf/compiler/plugin.pb.rb

@@ -3,49 +3,50 @@
 #
 require 'protobuf/message'
 
+
 ##
 # Imports
 #
 require 'google/protobuf/descriptor.pb'
 
 module Google
-
   module Protobuf
-
     module Compiler
-    
+
       ##
       # Message Classes
       #
       class CodeGeneratorRequest < ::Protobuf::Message; end
       class CodeGeneratorResponse < ::Protobuf::Message
         class File < ::Protobuf::Message; end
+
       end
-
+
+
+
       ##
       # Message Fields
       #
       class CodeGeneratorRequest
-        repeated ::Protobuf::Field::StringField, :file_to_generate, 1
-        optional ::Protobuf::Field::StringField, :parameter, 2
+        repeated :string, :file_to_generate, 1
+        optional :string, :parameter, 2
         repeated ::Google::Protobuf::FileDescriptorProto, :proto_file, 15
       end
-      
+
       class CodeGeneratorResponse
         class File
-          optional ::Protobuf::Field::StringField, :name, 1
-          optional ::Protobuf::Field::StringField, :insertion_point, 2
-          optional ::Protobuf::Field::StringField, :content, 15
+          optional :string, :name, 1
+          optional :string, :insertion_point, 2
+          optional :string, :content, 15
         end
-        
-        optional ::Protobuf::Field::StringField, :error, 1
+
+        optional :string, :error, 1
         repeated ::Google::Protobuf::Compiler::CodeGeneratorResponse::File, :file, 15
       end
-
-
+
     end
-    
+
   end
-  
+
 end