Added an executable that prints the status of all threads managed by …

…Titan ('titan status' on the terminal)

CHANGELOG.md

@@ -1,5 +1,9 @@
 ## dev
 
+- Features
+
+  * Added an executable that prints the status of all threads managed by Titan ('titan status' on the terminal)
+
 - Bug fixes
 
   * Fixed "warning: don't put space before argument parentheses" in thread.rb at line 124

bin/titan

@@ -0,0 +1,4 @@
+#!/usr/bin/env ruby
+require "titan"
+
+Titan::Cli.start

lib/titan.rb

@@ -1,5 +1,6 @@
 require "titan/version"
 
 module Titan
+  autoload :Cli,      "titan/cli"
   autoload :Thread,   "titan/thread"
 end

lib/titan/cli.rb

@@ -0,0 +1,41 @@
+require "thor"
+
+module Titan
+  class Cli < Thor
+    include Thor::Actions
+
+    def initialize(*)
+      super
+      @shell = Thor::Shell::Basic.new
+    end
+
+    desc "help", "Describes available command line options"
+    def help
+      @shell.say "The following methods are available through typing `titan method_name`"
+      @shell.say ""
+      available_methods = [
+        ["method_name", "description"],
+        ["", ""],
+        ["help",        "Prints this page and describes available methods"],
+        ["status",      "Prints the status of all threads managed by Titan"],
+        ["version",     "Prints the currently installed version"]
+      ]
+      @shell.print_table(available_methods)
+    end
+
+    desc "status", "Prints the status of all threads managed by Titan"
+    def status
+      table_header = ["id", "pid", "status"]
+      threads = Titan::Thread.all.each_value.collect { |thread|
+        [thread.id.to_s, thread.pid.to_s, thread.alive? ? "alive" : "dead"]
+      }
+      @shell.print_table(threads.unshift(table_header)) unless threads.empty?
+    end
+
+    desc "version", "Prints the currently installed version"
+    def version
+      @shell.say Titan::VERSION
+    end
+    map %w(--version -v) => :version
+  end
+end

lib/titan/version.rb

@@ -1,3 +1,3 @@
 module Titan
-  VERSION = "0.2.1"
+  VERSION = "0.3.0.dev"
 end

spec/titan/cli_spec.rb

@@ -0,0 +1,45 @@
+require 'spec_helper'
+
+describe Titan::Cli do
+  before(:each) do
+    @shell = mock(Thor::Shell::Basic, :print_table => nil, :say => nil)
+    Thor::Shell::Basic.stub!(:new).and_return(@shell)
+    @cli = Titan::Cli.new
+  end
+
+  describe "#help" do
+    it "should print the methods as a table" do
+     @shell.should_receive(:print_table)
+     @cli.help
+    end
+  end
+
+  describe "#status" do
+    it "should load all threads" do
+      Titan::Thread.should_receive(:all).and_return({})
+      @cli.status
+    end
+
+    context "given there are threads available" do
+      before(:each) do
+        Titan::Thread.stub!(:all).and_return({'test' => Titan::Thread.new(:id => 'test')})
+      end
+
+      it "should print the threads as a table" do
+        @shell.should_receive(:print_table)
+        @cli.status
+      end
+    end
+
+    context "given there are no threads available" do
+      before(:each) do
+        Titan::Thread.stub!(:all).and_return({})
+      end
+
+      it "should not print the threads as a table" do
+        @shell.should_not_receive(:print_table)
+        @cli.status
+      end
+    end
+  end
+end

titan.gemspec

@@ -11,12 +11,15 @@ Gem::Specification.new do |s|
   s.email                     = %q{info@stefan-sprenger.com}
   s.extra_rdoc_files          = ["LICENSE", "README.md"]
   s.files                     = Dir.glob("{lib}/**/*") + %w(LICENSE README.md CHANGELOG.md)
+  s.executables               = ["titan"]
   s.homepage                  = %q{http://github.com/flippingbits/titan}
   s.rdoc_options              = ["--charset=UTF-8"]
   s.require_paths             = ["lib"]
   s.rubygems_version          = %q{1.3.7}
   s.summary                   = %q{Helps you creating and managing daemon threads with Ruby.}
 
+  s.add_dependency("thor")
+
   if s.respond_to? :specification_version then
     current_version = Gem::Specification::CURRENT_SPECIFICATION_VERSION
     s.specification_version = 3