initial work on publish

config/config.go

@@ -47,6 +47,7 @@ type Storage struct {
 // Config represents a configuration for a server.Server.
 type Config struct {
 	Addr    string  `json:"addr"`
+	PubAddr string  `json:"pub_addr"`
 	Storage Storage `json:"storage"`
 
 	Private   bool `json:"private"`

config/config_test.go

@@ -16,6 +16,7 @@ var exampleJson = `{
 
   "network": "tcp",
   "addr": ":34000",
+  "pub_addr": "tcp://*:34001",
   "storage": {
     "driver": "redis",
     "addr": "127.0.0.1:6379",

server/publish.go

@@ -0,0 +1,28 @@
+// Copyright 2013 The Chihaya Authors. All rights reserved.
+// Use of this source code is governed by the BSD 2-Clause license,
+// which can be found in the LICENSE file.
+package server
+
+import (
+	zmq "github.com/alecthomas/gozmq"
+)
+
+func (s *Server) publish() {
+	context, err := zmq.NewContext()
+	if err != nil {
+		panic(err)
+	}
+	defer context.Close()
+
+	socket, err := context.NewSocket(zmq.PUB)
+	if err != nil {
+		panic(err)
+	}
+	defer socket.Close()
+
+	socket.Bind(s.conf.PubAddr)
+
+	for msg := range s.pubChan {
+		socket.Send([]byte(msg), 0)
+	}
+}

server/server.go

@@ -34,6 +34,8 @@ type Server struct {
 
 	waitgroup sync.WaitGroup
 
+	pubChan chan string
+
 	http.Server
 }
 
@@ -46,6 +48,7 @@ func New(conf *config.Config) (*Server, error) {
 	s := &Server{
 		conf:       conf,
 		dbConnPool: pool,
+		pubChan:    make(chan string),
 		Server: http.Server{
 			Addr:        conf.Addr,
 			ReadTimeout: conf.ReadTimeout.Duration,
@@ -66,6 +69,7 @@ func (s *Server) ListenAndServe() error {
 	s.startTime = time.Now()
 
 	go s.updateRPM()
+	go s.publish()
 	s.Serve(s.listener)
 
 	s.waitgroup.Wait()
@@ -79,6 +83,7 @@ func (s *Server) Stop() error {
 	if err != nil {
 		return err
 	}
+	close(s.pubChan)
 	return s.listener.Close()
 }
 

vagrant/puppet/manifests/default.pp

@@ -3,33 +3,54 @@ exec { 'echo this works': }
 
 group { 'puppet': ensure => 'present' }
 
-exec { 'chown -R vagrant:vagrant /home/vagrant/': }
+exec { 'chown -R vagrant:vagrant /home/vagrant/':
+}
 
 exec { 'apt-get update':
 	command => '/usr/bin/apt-get update',
 }
 
+exec { 'add-apt-repository ppa:chris-lea/zeromq && apt-get update':
+	require => Package['python-software-properties'],
+	alias   => 'zmq_repo',
+	creates => '/etc/apt/sources.list.d/chris-lea-zeromq-precise.list',
+}
+
 exec { 'add-apt-repository ppa:duh/golang && apt-get update':
 	alias   => 'go_repo',
 	creates => '/etc/apt/sources.list.d/gophers-go-precise.list',
 	require => Package['python-software-properties'],
 }
 
-package { 'python-software-properties':
-	ensure  => present,
+package { 'pkg-config':
 	require => Exec['apt-get update'],
+	ensure  => present,
+}
+
+package { 'libzmq-dev':
+	require => [
+		Exec['zmq_repo'],
+		Package['pkg-config'],
+	],
+	ensure  => present,
+}
+
+package { 'python-software-properties':
+	require => Exec['apt-get update'],
+	ensure  => present,
 }
 
 package { 'git':
-	ensure  => present,
 	require => Exec['apt-get update'],
+	ensure  => present,
 }
 
 package { 'golang':
-	ensure  => present,
 	require => Exec['go_repo'],
+	ensure  => present,
 }
 
 exec { 'echo "export GOPATH=/home/vagrant/chihaya" > /etc/profile.d/gopath.sh':
+	alias   => 'go_path',
 	creates => '/etc/profile.d/gopath.sh',
 }