“Drupal is written in PHP, which is uttterly offensive to people.”

3. H o r r i b l e T r u t h 1 “Drupal is written in PHP, which is uttterly offensive to people.”

5. H o r r i b l e T r u t h 2 “Drupal loads too much code” -rasmus

6. Is Drupal too Modular?

7. H o r r i b l e T r u t h 4 “Drupal is basically a 404 page to which you can add modules””

8. drupal_bootstrap(DRUPAL_BOOTSTRAP_FULL); index.php includes/bootstrap.inc - load necessary functions drupal_page_header() starts timer, sets up caching, module callout includes/common.inc - utility functions such as path formatting functions, form generation and validation, etc. fix_gpc_magic() sets $status 404 switch - case Not Found case Access Denied drupal_page_footer()

9. drupal_bootstrap(DRUPAL_BOOTSTRAP_FULL); drupal_load() drupal_not_found(); drupal_access_denied(); drupal_site_offline(); $return = menu_execute_active_handler(); print theme('page', $return); drupal_page_footer();

10. What's on the menu api? MENU_CALLBACK MENU_DEFAULT_LOCAL_TASK MENU_LOCAL_TASK MENU_MAX_DEPTH MENU_MAX_PARTS MENU_NORMAL_ITEM MENU_SUGGESTED_ITEM MENU_CALLBACK MENU_DEFAULT_LOCAL_TASK MENU_LOCAL_TASK MENU_MAX_DEPTH MENU_MAX_PARTS MENU_NORMAL_ITEM MENU_SUGGESTED_ITEM

11. Scream API

12. H o r r i b l e T r u t h 7 The Dreaded Hooks of Torture

13. Hooks of Torture • to implement a hook, create a function that 'extends' hooks into an existing hook (“hook function”) • not functions but can be overloaded • call user function array used to make dynamic function calls

14. module_invoke_all • <?php • function module_invoke_all() { • $args = func_get_args(); • $hook = $args[0]; • unset($args[0]); • $return = array(); • foreach (module_implements($hook) as $module) { • $function = $module .'_'. $hook; • $result = call_user_func_array($function, $args); • if (isset($result) && is_array($result)) { • $return = array_merge_recursive($return, $result); • } • else if (isset($result)) { • $return[] = $result; • } • } • return $return; • } • ?>

15. hook_admin • /** • * channels_admin • * implements hook_admin • * Provides channels admin form to save settings for the following fields: • * • */ • function channels_admin() { • $form['channels'] = array( • '#type' => 'textfield', • '#title' => t('Channel'), • '#default_value' => variable_get('channels', ''), • '#size' => 25, • '#maxlength' => 128, • '#description' => t("channel_theme"), • '#required' => TRUE, • ); • return system_settings_form($form); • }

16. hook_perms • /** • * Implements hook_perm(). • */ • function channels_perm() { • return array( • 'access channel content', • 'administer channels', • ); • }

17. hook_menu • /** • * Implements hook_menu(). • anne/ • function channels_menu() { • $items = array(); • $items['admin/settings/channels'] = array( • 'title' => 'channel settings', • 'description' => 'select channel', • 'page callback' => 'drupal_get_form', • 'page arguments' => array('channels_admin'), • 'access arguments' => array('administer channels'), • 'type' => MENU_NORMAL_ITEM, • ); • return $items; • }

18. hook_block • /** • * Implementation of hook_block(). • */ • function channels_block($op = 'list', $delta = 0, $edit = array()) { • switch ($op) { • case 'list': • $blocks[0]['info'] = t('current_channel'); • return $blocks; • case 'view': • $totals = _channels_get_theme(); • if (!empty($webstream)) { • $content = theme('channels_current_theme', $webstream); • } • $blocks['subject'] = t('You're What's On!'); • $blocks['content'] = $content; • return $blocks; • }

19. hook_menu_alter • /** Implementation of hook_menu_alter(). */ • function noaccess_menu_alter(&$items) { • $items['node']['access arguments'] = array('access node path'); • } • /** Implementation of hook_perm(). */ • function noaccess_perm() { • return array('access node path'); • }

20. Hook Soup

21. Does Drupal have a Learning Curve...

22. …or a Learning Brick Wall ?

24. “Community Plumbing”

25. Product! Framework! Drupal is a Pushme - Pullyou

26. Field API • What's • a • Node?

27. H o r r i b l e T r u t h 9 “Drupal Isn't 'Classy”'?

28. H o r r i b l e T r u t h 10 “Drupal isn't Object Oriented?”

29. DRUPAL DESIGN PATTERN Drupal Design Pattern

30. REALITY CHECK. Drupal Design Pattern

31. Drupal Anti-Pattern “Load Everything then Cherry Pick What You Need.”

32. H o r r i b l e T r u t h 11 Drupal Encourages Slavery

33. Making Drupal “Slave Safe!”

34. Actions* & Triggers *(not slave safe)

35. Database TNG

37. Performance & Scaling • Sample Metrics from a large Drupal site: • 50 million page views per month • 6.5 million site visitors per month • 150,000 page views per hour • load tests to levels of greater than 500,000 page views per hour Drupal.org delivers approximately 1M/day/month

38. Object Caching • APC • Advantages • Low latency • No need to serialize/unserialize items • Scales perfectly with more web servers Disadvantages • No enforced consistency across multiple web servers • Cache is not shared; each web server must generate each item memcached Advantages • Consistent across multiple web servers • Cache is shared across all web servers; items only need to be generated once Disadvantages • High latency • Requires serializing/unserializing items • Easily shards data across multiple web servers, but is still a big, shared cache

39. Cache Headers

41. drush • * Download and enable devel module: • drush dl devel • drush enable devel • * Run cron: • drush cron • * Refresh modules and core updates informartion: • drush refresh • * Take a snapshot of the DB: • drush sql dump > mydb.sql • * Open a mysql console for running SQL commands into Drupal DB: • drush sql cli • * Clear Drupal cache: • drush cache clear

42. drush

43. drush_make core = "7.x" projects[] = "drupal" projects[] = "acquia_connector" projects[apachesolr][download][type] = "cvs" projects[apachesolr][download][module] = "contributions/modules/apachesolr" projects[apachesolr][download][revision] = "DRUPAL-7--0" projects[acquia_search][type] = "module" projects[acquia_search][download][type] = "svn" projects[acquia_search][download][url] = "https://svn.acquia.com/drupal/branches/1.x-7.x/modules/acquia/acquia_search/" libraries[SolrPhpClient][download][type] = "get" libraries[SolrPhpClient][download][url] = "http://solr-php-client.googlecode.com/files/SolrPhpClient.r22.2009-11-09.tgz" libraries[SolrPhpClient][destination] = "modules/apachesolr"

44. Automated Backup • touch ~/.logrotate.state ~/.logrotate.config • emacs ~/.logrotate.config • ~/backup/dev.sql.gz { • rotate 7 • daily • nocompress • nocopytruncate • postrotate • /usr/bin/drush -r ~/web.root.org/web/ sql dump | gzip > ~/backup/dev.sql.gz • endscript • } • /usr/bin/drush -r ~/web.root.org/web/ sql dump | gzip > ~/backup/dev.sql.gz