Class: RailsPwnerer::App::ClusterConfig

Inherits:
Object
  • Object
show all
Includes:
Base
Defined in:
lib/rails_pwnerer/app/cluster_config.rb

Instance Method Summary collapse

Methods included from Base

_setup_unix, _setup_windows, all_packages, all_packages_without_caching, #atomic_erase, #atomic_read, #atomic_write, #best_package_matching, #check_rails_root, #control_boot_script, #cpu_cores, #current_user, #gem_exists?, #gid_for_username, #group_for_username, #hook_boot_script, #install_gem, #install_gems, #install_package, #install_package_impl, #install_package_matching, #install_packages, #kill_tree, #os_distro, package_info_hash, #path_to_boot_script, #path_to_boot_script_defaults, #path_to_gemdir, #process_info, #prompt_user_for_password, #remove_package, #remove_packages, #search_packages, #uid_for_username, #unroll_collection, #update_all_packages, #update_all_packages_impl, #update_gems, #update_package_metadata, #upgrade_gem, #upgrade_gems, #upgrade_package, #upgrade_package_impl, #upgrade_packages, #with_package_source, #with_temp_dir

Instance Method Details

#control_all(action) ⇒ Object 



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# File 'lib/rails_pwnerer/app/cluster_config.rb', line 135

def control_all(action)
  RailsPwnerer::Config.all_applications.each do |ai|
    case action
    when :start
      RailsPwnerer::App::ClusterConfig.new.start ai[0], ai[1]
    when :stop
      RailsPwnerer::App::ClusterConfig.new.stop ai[0], ai[1]        
    end
  end 
end

#fix_permissions(app_name, instance_name) ⇒ Object 



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# File 'lib/rails_pwnerer/app/cluster_config.rb', line 8

def fix_permissions(app_name, instance_name)
  app_config = RailsPwnerer::Config[app_name, instance_name]    
  pwnerer_user = app_config[:pwnerer_user]
  pwnerer_uid = uid_for_username(pwnerer_user)
  pwnerer_group = group_for_username(pwnerer_user)
  
  writable_dirs = %w(log tmp public)
  if app_config[:writable_dirs]      
    writable_dirs += app_config[:writable_dirs].split ','
  end
  
  return unless File.exist?(app_config[:app_path])
  Dir.chdir app_config[:app_path] do
    writable_dirs.each do |writable_dir|
      FileUtils.mkpath writable_dir unless File.exists? writable_dir
      FileUtils.chown_R(pwnerer_uid, pwnerer_group, writable_dir)
    end
  end
end

#manage(app_name, instance_name, action) ⇒ Object 



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# File 'lib/rails_pwnerer/app/cluster_config.rb', line 126

def manage(app_name, instance_name, action)
  case action
  when :checkpoint
    # nothing to do here
  when :rollback
    fix_permissions app_name, instance_name
  end
end

#manage_ports(app_name, instance_name, action) ⇒ Object 



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# File 'lib/rails_pwnerer/app/cluster_config.rb', line 28

def manage_ports(app_name, instance_name, action)
  app_config = RailsPwnerer::Config[app_name, instance_name]
  return unless frontends = RailsPwnerer::Config.app_frontends(app_name, instance_name)
  
  case action
  when :alloc
    app_config[:port0] = RailsPwnerer::Config.alloc_ports frontends
  when :free
    RailsPwnerer::Config.free_ports app_config[:port0], frontends
    return if app_config[:port0] == 0 # do not release if ports have already been released
    app_config[:port0] = 0
  end
  RailsPwnerer::Config.flush_db RailsPwnerer::Config.app_db_name(app_name, instance_name)
end

#post_update(app_name, instance_name) ⇒ Object 



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# File 'lib/rails_pwnerer/app/cluster_config.rb', line 117

def post_update(app_name, instance_name)
  manage_ports app_name, instance_name, :alloc
  fix_permissions app_name, instance_name
end

#pre_update(app_name, instance_name, &update_proc) ⇒ Object 



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# File 'lib/rails_pwnerer/app/cluster_config.rb', line 114

def pre_update(app_name, instance_name, &update_proc)
  manage_ports app_name, instance_name, :free
end

#remove(app_name, instance_name) ⇒ Object 



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# File 'lib/rails_pwnerer/app/cluster_config.rb', line 122

def remove(app_name, instance_name)
  manage_ports app_name, instance_name, :free
end

#setup(app_name, instance_name) ⇒ Object 



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# File 'lib/rails_pwnerer/app/cluster_config.rb', line 108

def setup(app_name, instance_name)
  manage_ports app_name, instance_name, :alloc
  fix_permissions app_name, instance_name
  # no need to configure nginx here, it'll be done by the executor
end

#start(app_name, instance_name) ⇒ Object 



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# File 'lib/rails_pwnerer/app/cluster_config.rb', line 68

def start(app_name, instance_name)
  app_config = RailsPwnerer::Config[app_name, instance_name]
  # silently die if the app was completely busted
  return unless app_config and File.exists? app_config[:app_path]

  app_path, pwnerer_user = app_config[:app_path], app_config[:pwnerer_user]
  pwnerer_group = group_for_username(pwnerer_user)    
  frontends = RailsPwnerer::Config.app_frontends(app_name, instance_name)
  first_port, environment = app_config[:port0], app_config[:environment]

  stop app_name, instance_name
  
  # alloc a port if somehow that slipped through the cracks
  if first_port == 0
    manage_ports app_name, instance_name, :alloc
    first_port = app_config[:port0]
    RailsPwnerer::App::NginxConfig.new.update app_name, instance_name
  end
  
  static_cmd = "thin start -a 127.0.0.1 -c #{app_path} -u #{pwnerer_user} " +
               "-g #{pwnerer_group} -e #{environment} -d " +
               " --tag rpwn_#{app_name}.#{instance_name} "
  
  # TODO: start the servers simultaneously
  Dir.chdir app_path do
    if File.exist? 'config.ru'
      static_cmd << '-R config.ru '
    else    
      static_cmd << '-A rails '
    end
    static_cmd = 'bundle exec ' + static_cmd if File.exist?('Gemfile')
    
    frontends.times do |f|
      fe_port = first_port + f
      cmd = static_cmd + "-p #{fe_port} -l log/fe.#{fe_port}.log -P tmp/pids/fe.#{fe_port}.pid"
      Kernel.system cmd
    end
  end
end

#stop(app_name, instance_name) ⇒ Object 



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# File 'lib/rails_pwnerer/app/cluster_config.rb', line 43

def stop(app_name, instance_name)
  app_config = RailsPwnerer::Config[app_name, instance_name]
  # silently die if the app was completely busted
  return unless app_config and File.exists? app_config[:app_path]
      
  app_path, first_port = app_config[:app_path], app_config[:port0]
  frontends = RailsPwnerer::Config.app_frontends(app_name, instance_name)

  cmdline_patterns = ['thin', nil]
  
  Dir.chdir app_path do
    # TODO: stop processes in parallel
    frontends.times do |f|
      fe_port = first_port + f
      cmdline = "thin stop -a 127.0.0.1 -p #{fe_port} -d " +
                "-P tmp/pids/fe.#{fe_port}.pid"
      cmdline = 'bundle exec ' + cmdline if File.exist?('Gemfile')
      cmdline_patterns[1] = "(127.0.0.1:#{fe_port})"
      RailsPwnerer::Util.kill_process_set(cmdline, "tmp/pids/fe.#{fe_port}.pid",
                         cmdline_patterns, :verbose => false, :sleep_delay => 0.2)
    end
    
  end
end