nginx-update.rb

#!/usr/bin/env ruby
# -*- ruby -*-

# TODO: Intelligently find (maybe even install?) latest REE & passenger.

CONFIG_FLAGS="--with-http_secure_link_module"
REE_VERSION="ruby-enterprise-1.8.7-2010.01"

require 'open-uri'

current = open("http://www.nginx.eu/download/sources/").
  read.
  scan(/\<A[^\>]+\>([^\<]+)\</).
  map(&:to_s).
  select{|e| e =~ /nginx-.*\.tar\.gz/}.
  map { |e| e.
    sub(/nginx-(.*)\.tar\.gz/, '\1').
    split('.').
    map(&:to_i) }.
  sort.
  last
 
vstring   = current.join('.')
dname     = "nginx-#{vstring}"
fname     = "#{dname}.tar.gz"
targetdir = "#{dname}-#{Time.now.to_i}"
srcdir    = File.expand_path("~/src")
url       = "http://www.nginx.eu/download/sources/#{fname}"
 
if File.exists?("#{srcdir}/#{fname}")
  puts "Already up to date. Continue anyway?"
  exit unless gets.chomp =~ /y/
end
 
Dir.chdir(File.expand_path('~/src'))
 
system <<SYSTEM
rm -r #{fname} #{dname} 2>/dev/null
wget #{url}
tar xf #{fname}
rm #{fname}

sudo /opt/#{REE_VERSION}/bin/passenger-install-nginx-module --auto \
--nginx-source-dir=#{srcdir}/#{dname} --prefix=/opt/nginx/versions/#{targetdir} \
--extra-configure-flags='#{CONFIG_FLAGS}'
SYSTEM
 
puts "Everything is installed... should I go ahead and set the symlink to the new nginx?"
exit unless gets.chomp =~ /y/
 
system "sudo ln -sf /opt/nginx/versions/#{targetdir} /opt/nginx/current"
 
puts "All done!"