Make statsd notifier use nc again [References #42]

README.md

@@ -59,3 +59,5 @@ set :notifier_statsd_options, {
   :port => "8125"
 }
 ```
+
+The `nc` ([Netcat](http://netcat.sourceforge.net/)) command is used to send messages to statsd and must be installed on the remote hosts. This is installed by default on most Unix machines.

lib/capistrano/notifier/statsd.rb

@@ -10,7 +10,7 @@ def self.load_into(configuration)
         namespace :notify do
           desc 'Notify StatsD of deploy.'
           task :statsd do
-            Capistrano::Notifier::StatsD.new(configuration).perform
+            run Capistrano::Notifier::StatsD.new(configuration).perform
           end
         end
       end
@@ -20,7 +20,7 @@ def self.load_into(configuration)
   end
 
   def perform
-    socket.send packet, 0, host, port
+    "echo #{packet.gsub('|', '\\|')} | nc -w 1 -u #{host} #{port}"
   end
 
   private
@@ -49,10 +49,6 @@ def port
     options[:port]
   end
 
-  def socket
-    @socket ||= UDPSocket.new
-  end
-
   def with
     case options[:with]
     when :counter then "1|c"

spec/capistrano/notifier/statsd_spec.rb

@@ -19,12 +19,9 @@
     subject.send(:packet).should == "example.deploy:1|c"
   end
 
-  it "sends a packet" do
-    UDPSocket.any_instance.should_receive(:send).once.with(
-      "example.deploy:1|c", 0, "127.0.0.1", "8125"
-    )
-
-    subject.perform
+  it "creates a command" do
+    subject.perform.should ==
+      "echo example.deploy:1\\|c | nc -w 1 -u 127.0.0.1 8125"
   end
 
   context "with a stage" do