post-update-mail.rb

#!/usr/bin/env ruby
# coding: utf-8

# Please set the authentication
# information here to send the mail.
#
#   * address   : mail sending server name.
#   * prot      : mail sending server's port number.
#   * user_name : auth user name to send mail.
#   * password  : auth passwd of user_name.
#
MailConfig =<<EOC
address: "****"
port: 587
user_name: "****"
password: "****"
send_to:
  - "****@****"
EOC

# == Summary:
#
#   Send mail which contain new commit information.
#
# == Requirements:
#
#   * Ruby (> 1.8.7)
#   * MTA deamon (sendmail, postfix ...etc.)
#   * mail [RubyGem]
#
#   To install mail gem, run the command:
#
#       $ gem install mail
#
#   You can confirm whether mail was install like this:
#
#       $ gem list | grep mail
#         mail (X.X.X)
#
# == Description:
#
#   This script aims to notice push event to common repository
#   with sending email. 
#   To run this script if repository is pushed, register this
#   script in "post-update" hook file:
#
#       (at .git/hooks/post-update)
#       # exec git-update-server-info
#       SCRIPT_PATH=/path/to/git-repo/hooks/post-update-email.rb
#       ${SCRIPT_PATH}
#
#   ! Do not forget to add the executable(+x) parmission for post-update
#     and this file.
#       
#       $ chmod +x post-update
#       $ chmod +x post-update-email.rb
#
#
# == Mail Configuration Test:
#
#   To confirm You can send mail with this script, runs below:
#
#       $ ruby post-update-mail.rb test
#
#   If it is ready to send mail, you would recieve mail like:

#       from    post-update-mailer@google.com
#       to      (address written at configuration)
#       subject mail sending test was succeeded!
#       body    This mail was send from <server name> to confirm the mail configuration.
#
#
# == TODO:
#
#   * Add repository name to mail.
#   * More information about commit ... ?
#


require "rubygems" if RUBY_VERSION < '1.9'
require "mail"
require "yaml"

module GIT_LOG
  class << self
    def commiter
      `git log -1 --pretty=format:"%ae"`
    end
    def comment
      `git log -1 --pretty=format:"%s"`
    end
    def description
      <<-EOD
The change set was pushed on:
      #{_repository_name_} @ #{_server_name_}

=============NEWEST COMMIT LOG=============
#{`git whatchanged -1 --pretty=format:"commiter: %cn <%ae>%ndate    : %cd%n%s%n--------------------%b"`.chomp}
===========================================
      EOD
    end

    def _server_name_
      `uname -n`.chomp
    end
    def _repository_name_
      `pwd`.chomp
    end
  end
end

# Bugger?
def switch_to_test!
  GIT_LOG.class_eval do
    class << self
      def commiter; "post-update-mailer@google.com"; end
      def comment; "mail sending test was succeeded!"; end
      def description; "This mail was send from '#{_serve_name_}' to confirm the mail configuration."; end
    end
  end
end


if __FILE__ == $0

# Set up for test sending
switch_to_test! if ARGV[0] && ARGV[0] == "test"

mail_conf = YAML.load(MailConfig)
send_to = mail_conf.delete("send_to")
mail_conf.merge!("enable_starttls_auto" => false)

# Conf!
Mail.defaults do
  delivery_method :smtp, mail_conf
end

# Mail!
Mail.deliver do
  from    GIT_LOG.commiter
  to      send_to
  subject GIT_LOG.comment
  body    GIT_LOG.description
end

end