gistfile1.txt

load 'deploy'

# ================================================================
# ROLES
# ================================================================


    role :app, "ec2-81-243-196-157.compute-1.amazonaws.com", {:primary=>true}
  
    role :background, "ec2-81-243-205-119.compute-1.amazonaws.com"
  

# ================================================================
# VARIABLES
# ================================================================

# Webistrano defaults
  set :webistrano_project, "sweet_high"
  set :webistrano_stage, "staging"


  set :application, "unicorn_test"

  set :bundle_disable_shared_gems, "\"1\""

  set :bundle_path, "vendor/bundler_gems"

  set :certificate_name, "test_key"

  set :default_shell, "bash --login"

  set :deploy_to, "/data/\#{application}/\#{webistrano_stage}"

  set :deploy_via, :remote_cache

  set :domain, "staging.myapp.com"

  set :environment, "staging"

  set :group, "ubuntu"

  set :keep_releases, "2"

  set :nginx_bind_options, "default deferred"

  set :nginx_conf_path, "/etc/nginx"

  set :nginx_worker_count, "16"

  set :password, "deployment_user(SSH user) password"

  set :precompile_assets, true

  set :rails_env, "staging"

  set :repository, "git@github.com:XXXXXXXXXXX/XXXXXXXXXX.git"

  set :runner, "ubuntu"

  set :rvm_bin_path, "/home/ubuntu/.rvm/bin/rvm"

  set :rvm_type, :user

  set :scm, :git

  set :scm_password, "your_SVN_password"

  set :scm_username, "your_SVN_user"

  set :ssh_options, {:forward_agent => true,:paranoid => false,:keys => ["/home/#{user}/.ssh/unicorn_test.pem"]}

  set :unicorn_config, "\#{shared_path}/config/unicorn.rb"

  set :unicorn_worker_count, "16"

  set :use_sudo, true

  set :user, "ubuntu"



  set(:branch) do
    Capistrano::CLI.ui.ask "Please enter 'branch': "
  end


# ================================================================
# TEMPLATE TASKS
# ================================================================

        # allocate a pty by default as some systems have problems without
        default_run_options[:pty] = true
      
        # set Net::SSH ssh options through normal variables
        # at the moment only one SSH key is supported as arrays are not
        # parsed correctly by Webistrano::Deployer.type_cast (they end up as strings)
        [:ssh_port, :ssh_keys].each do |ssh_opt|
          if exists? ssh_opt
            logger.important("SSH options: setting #{ssh_opt} to: #{fetch(ssh_opt)}")
            ssh_options[ssh_opt.to_s.gsub(/ssh_/, '').to_sym] = fetch(ssh_opt)
          end
        end
         


# ================================================================
# CUSTOM RECIPES
# ================================================================


  before "deploy:setup", :init_config
after "deploy:setup", :setup_cleanup
namespace :init_config do
  desc <<-DESC
       Created directory structure, changes ownership, etc...
  DESC
  
  task :default do
    run "sudo chown -R #{user}:#{group} /home/#{user}/.rvm"
    run "gem install bundler -no-ri -no-rdoc"
    run "sudo mkdir -p #{deploy_to}"
    run "sudo chown -R #{user}:#{group} #{deploy_to}"
    run "mkdir -p #{shared_path}/config"
    run "mkdir -p #{shared_path}/certs"
    run "mkdir -p #{shared_path}/sockets"
 
  end
end

namespace :setup_cleanup do
  task :default do
   run "sudo chown -R #{user}:#{group} #{deploy_to}"    
  end
end


def remote_file_exists?(full_path)
  'true' ==  capture("if [ -e #{full_path} ]; then echo 'true'; fi").strip
end


  namespace :deploy do
  task :restart, :roles=>:app do
    run "sudo service nginx restart"
  end
  
  task :start, :roles=>:app do
    run "sudo service nginx start"
  end
  
  task :stop, :roles=>:app do
    run "sudo service nginx stop"
  end
  
  task :migrations, :roles=>:app, :only => {:primary => true} do
    run "cd #{release_path} && bundle exec rake RAILS_ENV=#{environment} db:migrate"    
  end  
  
  task :migrate, :roles=>:app, :only => {:primary => true} do
    run "cd #{release_path} && bundle exec rake RAILS_ENV=#{environment} db:migrate"
  end
end


def get_binding
  binding # So that everything can be used in templates generated for the servers
end

def from_template(file)
  require 'erb'
  template = File.read(File.join(RAILS_ROOT, "/", file))
  result = ERB.new(template).result(self.get_binding)
end

  after "deploy:setup", :nginx

namespace :nginx do
  desc "Create nginx.conf and generates nginx.conf symlink"
  task :default, :roles => :app do
 
    # CREATES THE BASE NGINX CONFIG    
    config_content = from_template("config/templates/nginx.conf.erb")
    put config_content, "#{shared_path}/config/nginx.conf"
    run "sudo ln -nfs #{shared_path}/config/nginx.conf #{nginx_conf_path}"
    
    # CREATES THE VHOST NGINX CONFIG
    config_content = from_template("config/templates/vhost.erb")
    put config_content, "#{shared_path}/config/#{webistrano_stage}"
    run "sudo ln -nfs #{shared_path}/config/#{webistrano_stage} #{nginx_conf_path}/sites-enabled/#{webistrano_stage}"
    
    #upload the cert file
    upload("#{RAILS_ROOT}/config/certificates/#{certificate_name}.crt", "#{shared_path}/certs/#{certificate_name}.crt")
    #upload the key file
    upload("#{RAILS_ROOT}/config/certificates/#{certificate_name}.key", "#{shared_path}/certs/#{certificate_name}.key")
    run "chmod 600 #{shared_path}/certs/#{certificate_name}.key"
  end
end 


  after "deploy:rollback:revision", "post_deploy:bundle"
after "deploy:update_code", "post_deploy:bundle"
after "post_deploy:bundle", "post_deploy:assets:precompile"
after "post_deploy:assets:precompile", "post_deploy:assets:upload"
#after "post_deploy:bundle", "post_deploy:solr"



namespace :post_deploy do
  namespace :assets do
    task :precompile, :roles => :app, :except => { :no_release => true } do
      run "cd #{release_path} && bundle exec rake RAILS_ENV=#{environment} assets:precompile --trace"
    end
    
    task :upload, :roles => :app, :except => { :no_release => true } do
      run "cd #{release_path} && bundle exec rake RAILS_ENV=#{environment} assets:upload --trace"
    end
  end
  
  namespace :solr do
    task :default, :roles=>:background do
      run "cd #{release_path} && rake RAILS_ENV=#{environment} sunspot:solr:start --trace"
    end      
  end
  
  namespace :bundle do
    task :default, :roles=>[:app, :background] do
      run "cd #{release_path} && mkdir -p .bundler"
      run "cd #{release_path}/.bundler && touch config"
      run "echo BUNDLE_PATH: #{bundle_path} >> #{release_path}/.bundler/config"
      run "echo BUNDLE_DISABLE_SHARED_GEMS: #{bundle_disable_shared_gems} >> #{release_path}/.bundler/config"
      run "cd #{release_path} && bundle install --binstubs"

      on_rollback do
        if previous_release
          run "cd #{previous_release} && bundle install --binstubs"
        else
          logger.important "no previous release to rollback to, rollback of bundler:install skipped"
        end
      end
    end
  end  
end


  after "deploy:setup", "unicorn:setup"
namespace :unicorn do
  task :setup, :roles=>:app do
    config_content = from_template("config/templates/unicorn.rb.erb")
    put config_content, "#{shared_path}/config/unicorn.rb"
    
    config_content = from_template("config/templates/unicorn_init.sh.erb")
    put config_content, "#{shared_path}/config/unicorn_init.sh"
    run "chmod +x #{shared_path}/config/unicorn_init.sh"
  end
  
  %w[start stop restart].each do |command|
    desc "#{command} unicorn"
    task command, roles: :app do
      run "sh #{shared_path}/config/unicorn_init.sh #{command}"
    end
    after "deploy:#{command}", "unicorn:#{command}"
  end
end