Puppet Module ~ Code Sample Describing usage of manifests, templates, files, lib, specs, tests

puppet-module-sample.rb

http://justfewtuts.blogspot.com/2012/07/puppet-beginners-concept-guide-part-2.html

<tomcat-module>/manifests/install.pp
class <tomcat-module>::install {
  package { 'tomcat6': ensure => 'installed', }
}

<tomcat-module>/manifests/configure.pp
class <tomcat-module>::configure {
  <tomcat-module>::configure::war {
    ['web']:
      require  => Package['tomcat6'],
  }
}

<tomcat-module>/manifests/configure/war.pp
class <tomcat-module>::configure::war {
  file {
    "/var/lib/tomcat6/webapps/${name}.war":
      content => template('<tomcat-module>/war_app.conf.erb'),
      owner    => tomcat,
      group     => tomcat,
      mode     => '0644',
  }
  file {
    "/etc/${name}.conf":
      content => template('<tomcat-module>/war_app.conf.erb'),
      owner    => tomcat,
      group     => tomcat,
      mode     => '0644',
      require  => File["/var/lib/tomcat6/webapps/${name}.war"],
      notify     => Service['tomcat6'],
  }
}

'<tomcat-module>/templates/war_app.conf.erb' 
com.<%= name %>.adept.serviceURL=http://<%= fqdn %>:8080/<%= name %>
com.<%= name %>.adept.log.file=/var/log/tomcat6/<%= name %>.log
com.<%= name %>.adept.persist.sql.driverClass=com.mysql.jdbc.Driver
com.<%= name %>.adept.persist.sql.connection=jdbc:mysql://127.0.0.1:3306/adept
com.<%= name %>.adept.persist.sql.dialect=mysql
com.<%= name %>.adept.persist.sql.user=<%= mysql_user%>
com.<%= name %>.adept.persist.sql.password=<%= mysql_password%>


'<tomcat-module>/files/web.war' 
~ the war-packaged file for web-application

'<tomcat-module>/lib/facter/database.rb'
require 'facter'
require 'yaml'
facts_file = '/etc/puppet/myfacts.yaml'
facts = {}
facts.merge YAML.load_file(facts_file) if File.exist? facts_file
Facter.add("mysql_user") do
  setcode do
    return 'mysql-password' if facts['mysql'].nil? || facts['mysql']['user'].nil?
    facts['mysql']['user']
  end
end
Facter.add("mysql_password") do
  setcode do
    return 'mysql-password' if facts['mysql'].nil? || facts['mysql']['password'].nil?
    facts['mysql']['password']
  end
end

'<tomcat-module>/spec/classes/<tomcat-module>/install_spec.pp' 
require 'spec_helper'
describe 'tomcat::install' do
  it do
    should contain_package('tomcat6').with_ensure('latest')
  end
end

'<tomcat-module>/tests/' 
node just-tomcat6 {
  include <tomcat-module>::install
}

not actually a Ruby script but marked as one to get the color scheme for Ruby DSL snippets