A rake task to help provisioning jruby based deployments

jruby.rake

#
# PROVISIONING OF JRUBY BASED DEPLOYMENTS
#
# Copyright (c) 2012 Vincent Landgraf
# 
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated  documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
# 

REV = "1.6.7"
URL = "http://jruby.org.s3.amazonaws.com/downloads/#{REV}/jruby-bin-#{REV}.tar.gz"
FILENAME = File.basename(URL)
DIRNAME = "jruby-#{REV}"

def remove_native_lib(name)
  puts "removing native libs related to #{name}..."
  Dir[File.join(DIRNAME, "lib", "native", "*#{name}*")].each do |path|
    rm_rf path
  end
end

def jruby(cmd)
  chdir DIRNAME do
    sh "./bin/jruby #{cmd}"
  end
end

namespace :jruby do
  desc "download jruby environment from remote peer (Amazon S3)"
  task :fetch do
    if File.exist? FILENAME
      puts "File #{FILENAME} already exist and will not be downloaded again"
    else
      if sh "curl #{URL} > #{FILENAME}"
        puts "File downloaded"
      else
        raise "Failed to download file!"
      end
    end
  end
  
  desc "unpack the fetched jruby version into directory"
  task :unpack => :fetch do
    if File.exist? DIRNAME
      puts "Already unpacked and will not unpack again"
    else
      if sh "tar zxvf #{FILENAME}"
        puts "unpacked successfully"
      else
        raise "Failed to unpack"
      end
    end
  end
  
  namespace :clean do
    desc "remove help, sample and documentation files"
    task :help do
      files = %w(README LICENSE.RUBY COPYING)
      folders = %w(share samples tool docs)
    
      for path in files + folders do
        full_path = File.join(DIRNAME, path)
        rm_rf full_path if File.exist? full_path
      end
    end
  
    for arch in %w(FreeBSD Linux OpenBSD SunOS Windows AIX Darwin) do
      lambda do |architecture|
        desc "remove native libraries related to #{arch}"
        task "#{architecture}lib".downcase do
          remove_native_lib architecture
        end
      end.call(arch)
    end
  
    desc "remove folders and that are realted to windows"
    task :exe_win do
      bin_ext = %w(bat dll exe)
    
      bin_ext.each do |ext| 
        Dir[File.join(DIRNAME, "bin", "*.#{ext}")].each { |path| rm path }
      end
    end
  end
  
  desc "create an rc file that can be easily sourced in bash scripts"
  task :create_rc do
    template = File.read(__FILE__).split("__END__\n").last
    File.open(File.join(DIRNAME, "jrubyrc"), "w") do |f|
      f.write template
    end
  end
  
  namespace :linux do
    desc "optimize the package for the linux environment"
    task :optimize => [:unpack, "clean:help", "clean:aixlib", "clean:darwinlib",
                       "clean:exe_win", "clean:freebsdlib", "clean:openbsdlib",
                       "clean:sunoslib", "clean:sunoslib", "clean:windowslib"]
   
    desc "install jruby-openssl and bundler"
    task :bootstrap => [:optimize, :create_rc] do
      jruby "./bin/gem install jruby-openssl bundler"
    end
  end
end

__END__
SCRIPT_DIR="$( cd -P "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
export JRUBY_HOME=$SCRIPT_DIR
export PATH=$JRUBY_HOME/bin:$PATH