cf.rake

# sample rake tasks for deploying to cloud foundry

require 'fileutils'

namespace :cf do
  desc 'Deploy to staging on Cloud Foundry'
  task :deploy_staging do
    deploy('staging')
  end

  desc 'Deploy to production on Cloud Foundry'
  task :deploy_production do
    deploy('production')
  end

  def deploy(environment)
    cf_target = 'api.run.pivotal.io'
    deploy_space = 'space_name'
    deploy_org = "pivotallabs"
    deploy_repo_subdir = "tmp/cf_deploy"
    tmp_copy_dir = "/tmp/cf_deploy"

    check_for_cli

    check_for_dirty_git

    # Copy repo to tmp dir so we can continue working while it deploys
    puts "Copying repo to #{deploy_repo_subdir}..."
    FileUtils.rm_rf("#{Rails.root.to_s}/#{deploy_repo_subdir}")
    FileUtils.cp_r Rails.root.to_s, tmp_copy_dir
    FileUtils.mv tmp_copy_dir, "#{Rails.root.to_s}/#{deploy_repo_subdir}"

    # Change working directory to copied repo
    Dir.chdir("#{Rails.root.to_s}/#{deploy_repo_subdir}")

    # Delete symbolic links before deploy because cf doesn't like them
    sh 'find . -type l -exec rm -f {} \;'

    sh "cf target #{cf_target} -o #{deploy_org} -s #{deploy_space}"
    sh "cf push -m config/cf-#{environment}.yml"
  end

  def check_for_cli
    sh 'cf -v' do |ok, res|
      raise "The CloudFoundry CLI is required. Run: gem install cf" unless ok
    end
  end

  def check_for_dirty_git
    if `git status --porcelain`.present?
      puts "Unstaged or uncommitted changes will be deployed! continue? (y/n)"
      raise "Aborted!" unless STDIN.gets.strip == "y"
    end
  end
end