playing with the factory pattern to create an environment object

db/db.drush.inc

@@ -12,40 +12,11 @@
 include_once(dirname(__FILE__) . '/../provision.service.inc');
 
 function db_drush_init() {
-
-  include_once('mysql/mysql_service.inc');
-
   $command = drush_get_command();
   $command = explode(" ", $command['command']);
   if (preg_match("/^provision-/", $command[0])) {
-    // TODO - remove this shit
-    $master_db = drush_get_option('master_db');
-    $db = parse_url($master_db);
-    drush_set_default('master_db_user', urldecode($db['user']));
-    drush_set_default('master_db_passwd', urldecode($db['pass']));
-
-    drush_set_default('master_db_host', urldecode($db['host']));
-    drush_set_default('db_host', urldecode($db['host']));
-
-    drush_set_default('master_db_type', $db['scheme']);
-    drush_set_default('db_type', $db['scheme']);
-
-    $creds = array();
-    $options = array(
-      'master_db_user' => 'user',
-      'master_db_passwd' => 'pass',
-      'master_db_host' => 'host',
-      'master_db_type' => 'type');
-
-    foreach ($options as $option => $key) {
-      $creds[$key] = drush_get_option($option, '');
-    }
-
-    provision_service('db', new provisionService_db_mysql($creds));
-
+    provisionService::spawn('db', 'mysql'); 
   }
-
-  // this is where we generate the db service object.
 }
 
 function db_drush_exit() {
@@ -67,11 +38,33 @@ function db_drush_help($section) {
 
 
 class provisionService_db extends provisionService {
-  function __construct($creds) {
+
+  function init() {
+    $master_db = drush_get_option('master_db');
+    $db = parse_url($master_db);
+    drush_set_default('master_db_user', urldecode($db['user']));
+    drush_set_default('master_db_passwd', urldecode($db['pass']));
+
+    drush_set_default('master_db_host', urldecode($db['host']));
+    drush_set_default('db_host', urldecode($db['host']));
+
+    drush_set_default('master_db_type', $db['scheme']);
+    drush_set_default('db_type', $db['scheme']);
+
+    $creds = array();
+    $options = array(
+      'master_db_user' => 'user',
+      'master_db_passwd' => 'pass',
+      'master_db_host' => 'host',
+      'master_db_type' => 'type');
+
+    foreach ($options as $option => $key) {
+      $creds[$key] = drush_get_option($option, '');
+    }
     $this->creds = $creds;
+    return TRUE;
   }
 
-
   function verify() { 
     if (!$this->can_create_database()) {
       drush_set_error('PROVISION_CREATE_DB_FAILED');
@@ -302,10 +295,8 @@ class provisionService_db_pdo extends provisionService_db {
   protected $creds;
   private $dsn;
 
-  function __construct($creds) {
-    parent::__construct($creds);
-
-    print_r($creds);
+  function init() {
+    parent::init();
     $this->dsn = sprintf("%s:dbname=%s;host=%s", $this->PDO_type, $this->creds['name'], $this->creds['host']);
 
   }

http/http.drush.inc

@@ -5,12 +5,13 @@ include_once(dirname(__FILE__) . '/../provision.service.inc');
 function http_drush_init() {
  $command = drush_get_command();
   $command = explode(" ", $command['command']);
- if (preg_match("/^provision-/", $command[0])) {
-
-    include_once('apache/apache_service.inc');
-    provision_service('http', new provisionService_http_apache());
-
+  if (preg_match("/^provision-/", $command[0])) {
+    provisionService::spawn('http', 'apache'); 
+  }
+}
 
+class provisionService_http extends provisionService {
+  function init() {
     // Set up defines for platform
     $docroot = drush_get_option(array("r", "root"), $_SERVER['PWD']);
 
@@ -48,11 +49,6 @@ function http_drush_init() {
     drush_set_default('site_port', 80);
   }
 
-}
-
-class provisionService_http extends provisionService {
-
-
   /**
    * Ask the web server to check for and load configuration changes.
    */

provision.environment.inc

+<?php
+
+function provision_environment_factory($options) {
+  $classes = array('provisionServer', 'provisionPlatform', 'provisionSite');
+
+  if (provisionServer::evaluate($options)) {
+    $classname = array_shift($classes);
+    if (provisionPlatform::evaluate($options)) {
+      $classname = array_shift($classes);
+      if (provisionSite::evaluate($options)) {
+        $classname = array_shift($classes);
+      }
+    }
+  }
+
+  $object = new $classname($options);
+  $object->clean();
+  return $object;
+}
+
+class provisionEnvironment {
+  protected $options = array();
+  protected $properties = array();
+  protected $map = array();
+  protected $type = null;
+
+  function __get($name) {
+    if (array_key_exists($name, $this->properties)) {
+      return $this->properties[$name];
+    }
+  }
+
+  function __set($name, $value) {
+    if (!property_exists($this, $name)) {
+      $this->properties[$name] = $value;
+      $this->map[$name] = (array_key_exists($name, $this->map)) ? $this->map[$name] : $this->type;
+    }
+    else {
+      $this->$name = $value;
+    }
+  }
+
+  function __isset($name) {
+    if (property_exists($this->properties, $name) || property_exists($this, $name)) {
+      return TRUE;
+    }
+    return FALSE;
+  }
+
+  function __unset($name) {
+    if (property_exists($this->properties, $name)) {
+      unset($this->properties[$name]);
+    }
+    elseif (property_exists($this, $name)) {
+      unset($this->$name);
+    }
+
+  }
+
+  function __construct($options) {
+    $this->options = $options;
+  }
+
+  function clean() {
+    $this->options = array();
+  }
+
+  function setProperty($field, $default = null) {
+    if (isset($this->options[$field])) {
+      $this->$field = $this->options[$field];
+    }
+    else {
+      $this->$field = $default;
+    }
+  }
+
+  function setMap($field, $context) {
+    $this->map[$field] = $context;
+  }
+}
+
+class provisionServer extends provisionEnvironment {
+  public static function evaluate($options) {
+    return TRUE;
+  }
+
+  function __construct($options) {
+    parent::__construct($options);
+    $this->type = 'server';
+    $this->setProperty('remote_host', 'localhost');
+    $this->setProperty('script_user', get_current_user());
+    $this->setProperty('aegir_root', '/var/aegir');
+    $this->setProperty('config_path', $this->aegir_root . '/config');
+    $this->setProperty('backup_path', $this->aegir_root . '/backup');
+  }
+}
+
+class provisionPlatform extends provisionServer {
+  public static function evaluate($options) {
+    if ($options['root']) {
+      return true;
+    }
+  }
+
+  function __construct($options) {
+    parent::__construct($options);
+    $this->type = 'platform';
+    $this->setProperty('root', $_SERVER['PWD']);
+  }
+}
+
+class provisionSite extends provisionPlatform {
+
+  public static function evaluate($options) {
+    if ($options['uri']) {
+      return true;
+    }
+  }
+
+  function __construct($options) {
+    parent::__construct($options);
+    $this->type = 'site';
+    $this->setProperty('uri');
+  }
+}
+
+

provision.service.inc

 <?php
 
 class provisionService {
-  function __construct() {
-    $this->init();
-  }
 
   function verify() {
     return TRUE;
@@ -13,6 +10,27 @@ class provisionService {
     return TRUE;
   }
 
+  static function spawn($service, $default = null) {
+    $reflect = new reflectionClass('provisionService_' . $service);
+    $base_dir = dirname($reflect->getFilename());
+
+    $type = drush_get_option($service . '-service-type', $default);
+
+    
+    if ($type) {
+      $file = sprintf("%s/%s/%s_service.inc", $base_dir, $type, $type);
+      $className = sprintf("provisionService_%s_%s", $service, $type);
+      if (file_exists($file)) {
+        drush_log("Loading $type driver for the $service service");
+        include_once($file);
+        provision_service($service, new $className())->init(); 
+        return TRUE;
+      }
+    }
+
+    return false;
+  }
+
 }
 
 class provisionConfig {