Working prototype

lib/rake/task.rb

@@ -0,0 +1,11 @@
+module Rake
+  class Task
+    alias :original_execute :execute
+
+    def execute(args)
+      RakeControl.wrap(name, comment) do
+        original_execute(args)
+      end
+    end
+  end
+end

lib/rake_control.rb

@@ -1,5 +1,11 @@
-require "rake_control/version"
+require 'rake_control/version'
+require 'rake_control/wrapper'
+require File.expand_path('../rake/task', __FILE__)
 
 module RakeControl
-  # Your code goes here...
+  def wrap(name, description, &block)
+    Wrapper.new(name, description, block).execute
+  end
+
+  extend self
 end

lib/rake_control/version.rb

@@ -1,3 +1,3 @@
 module RakeControl
-  VERSION = "0.0.1"
+  VERSION = '0.1.0'
 end

lib/rake_control/wrapper.rb

@@ -0,0 +1,47 @@
+module RakeControl
+  class Wrapper
+    attr_reader :name, :description, :block, :success, :exception, :execution_time
+
+    def initialize(name, description, block)
+      @name = name
+      @description = description
+      @block = block
+      @success = true
+    end
+
+    def execute
+      result = measure_time do
+        intercept_exceptions do
+          block.call
+        end
+      end
+      save_statistics
+
+      success ? result : raise(exception)
+    end
+
+  private
+
+    def measure_time
+      t = Time.now
+      result = yield
+      @execution_time = Time.now.to_f - t.to_f
+      result
+    end
+
+    def intercept_exceptions
+      begin
+        yield
+      rescue => e
+        @success = false
+        @exception = e
+        nil
+      end
+    end
+
+    def save_statistics
+      puts "Task #{name} #{success ? 'finished successfully' : 'failed'}"
+      puts "Execution time: #{execution_time.round(4)}"
+    end
+  end
+end