Multi-stage Capistrano Example

multistage_cap_example

#
# Multi-stage Capistrano Example
#
# Example calls: cap dev deploy, cap prod deploy
# Env specific data defined in deploy/dev, deploy/prod
#
# Required gems: capistrano, capistrano-ext, rubygems, cloudfiles
# 

require 'capistrano/ext/multistage'
require 'rubygems'
require 'thinking_sphinx/deploy/capistrano'
#require 'cloudfiles'
#require 'fog'

# capistrano-ext provides multi-stage deployments.
set :stages, %w(dev prod)
set :default_stage, "dev"


# Set our SCM details...
set :scm, :git
set :repository, "git-repo-path"
set :branch, "master"
set :deploy_via, :remote_cache

# Use the web user account on the server for deployments.
set :user, "webuser"
set :port, 50001
set :ssh_options, {:forward_agent => true}
set :use_sudo, false


# Upload static assets to the CDN...

#namespace :sync_assets do
#    
#  desc "Uploading static assets..."
#  task :upload, roles => :app do
#  storage = Fog::Compute.new(
#    :provider           => 'Rackspace',
#    :rackspace_api_key  => key,
#    :rackspace_username => username
#  )


# Deploy the app and restart passenger (mod_rails).
namespace :deploy do

  desc "Restarting mod_rails with restart.txt"
  task :restart, :roles => :app, :except => { :no_release => true } do
    run "#{try_sudo} touch #{File.join(current_path,'tmp','restart.txt')}"
  end
  
  desc "Update the crontab file"  
  task :update_crontab, :roles => :db do  
    run "cd #{current_path} && whenever --update-crontab #{application}"  
  end

  desc "Stop sphinx before deploying app."
  task :stop_sphinx, :roles => [:app] do
    #run "cd #{current_path} && rake RAILS_ENV=development ts:stop"
    thinking_sphinx.stop
  end

  desc "Symlink Indexes, recreate config files and start sphinx."
  task :start_sphinx, :roles => [:app] do
    thinking_sphinx.configure
    thinking_sphinx.start
  end

  desc "Upload credentials files..."
  task :upload_creds, :roles => :app do
      top.upload("config/rackspace_cloudfiles.yml", "#{shared_path}/config", :via => :scp)
      top.upload("config/database.yml", "#{shared_path}/config", :via => :scp)
  end

  desc "Create symlinks for configuration files and uploads directory..."
  task :create_symlinks, :roles => :app do
      #run "ln -sf #{shared_path}/db #{current_path}/"
      run "ln -sf #{shared_path}/config/rackspace_cloudfiles.yml #{current_path}/config/"
      run "ln -sf #{shared_path}/uploads #{current_path}/public/"
  end

  [:start, :stop].each do |t|
    desc "#{t} task is a no-op with mod_rails"
    task t, :roles => :app do ; end
  end

end

# After deploying, update the ruby cronjobs with whenever gem,
# rebuild the sphinx search index, and re-create the symlinks
# for the credentials files and ensure that only the 5 most
# recent releases live on the server.
before "deploy", "deploy:stop_sphinx"
#after "deploy", "deploy:update_crontab"
#after "deploy", "deploy:upload_creds"
after "deploy", "deploy:create_symlinks"
before "deploy", "deploy:start_sphinx"
after "deploy", "deploy:cleanup"