Loader.php

<?php
namespace org\opencomb\loader ;

use org\opencomb\platform\service\ServiceFactory;
use org\jecat\framework\mvc\controller\Request;
use org\jecat\framework\system\AccessRouter;

class Loader
{
	const version = '0.1.0.0' ;
	
	const default_platform_version = '0.3.2.0' ;
	const default_framework_version = '0.7.2.0' ;
	
	public function __construct()
	{
		require_once __DIR__.'/common.php';
		$this->loadServiceSettings() ;
		
		// 创建服务
		if( !$arrServiceSetting =& $this->serviceSetting($_SERVER['HTTP_HOST']) )
		{
			throw new \Exception('requesting service is invalid: '.$_SERVER['HTTP_HOST']) ;
		}
		
		// framework/platform 的版本
		if(empty($arrServiceSetting['framework_version']))
		{
			$arrServiceSetting['framework_version'] = self::default_framework_version ;
		}
		if(empty($arrServiceSetting['platform_version']))
		{
			$arrServiceSetting['platform_version'] = self::default_platform_version ;
		}
		$arrServiceSetting['framework_folder'] = \org\opencomb\platform\FRAMEWORK_FOLDER.'/'.$arrServiceSetting['framework_version'] ;
		$arrServiceSetting['framework_url'] = \org\opencomb\platform\FRAMEWORK_URL.'/'.$arrServiceSetting['framework_version'] ;
		$arrServiceSetting['platform_folder'] = \org\opencomb\platform\PLATFORM_FOLDER.'/'.$arrServiceSetting['platform_version'] ;
		$arrServiceSetting['platform_url'] = \org\opencomb\platform\PLATFORM_URL.'/'.$arrServiceSetting['platform_version'] ;
		
		// 加载 framework / platform
		require_once $arrServiceSetting['framework_folder'].'/jc.init.php' ;
		require_once $arrServiceSetting['platform_folder'].'/oc.init.php' ;
		
		if( $this->isUpgradeData($arrServiceSetting) ){
			$this->upgradeFrameworkData($arrServiceSetting);
			$this->upgradePlatformData($arrServiceSetting);
		}
		
		$this->aServiceFactory = new ServiceFactory( $arrServiceSetting ) ;
		ServiceFactory::setSingleton( $this->aServiceFactory );
	}
	
	public function startup()
	{
		// 创建请求的服务
		$this->aServiceFactory->create() ;
	}
	
	public function startBaseSystem(){
		$this->aServiceFactory->startBaseSystem() ;
	}
	
	public function launch(){
		$this->startBaseSystem() ;
		$this->startup();
		
		// 根据路由设置创建控制器 并 执行
		$aController = AccessRouter::singleton()->createRequestController(Request::singleton()) ;
		if($aController)
		{
			$aController->mainRun() ;
		}
		else
		{
			header("HTTP/1.0 404 Not Found");
			echo "<h1>Page Not Found</h1>" ;
		}
	}
	
	private function loadServiceSettings()
	{
		$sServiceSettingFile = \org\opencomb\platform\SERVICES_FOLDER.'/settings.inc.php' ;
	
		// load domain settings
		if( !is_file($sServiceSettingFile) )
		{
			// domains missing or broken, rebuild it
			if( $hServices = opendir(\org\opencomb\platform\SERVICES_FOLDER) )
			{
				while($sFilename=readdir($hServices))
				{
					if( $sFilename=='.' or $sFilename=='..')
					{
						continue ;
					}
					if( is_dir(\org\opencomb\platform\SERVICES_FOLDER.'/'.$sFilename) )
					{
						$this->arrServiceSettings[$sFilename] = array(
								'domains' => array( $sFilename==='default'? '*': $sFilename ) ,
						) ;
					}
				}
				closedir($hServices) ;
					
				if( !file_put_contents($sServiceSettingFile,'<?php return $arrServiceSettings = '.var_export($this->arrServiceSettings,true).';') )
				{
					throw new \Exception('can not write file: '.$sServiceSettingFile) ;
				}
			}
		}
		else
		{
			$this->arrServiceSettings = include $sServiceSettingFile ;
	
			if(!is_array($this->arrServiceSettings))
			{
				throw new \Exception($sServiceSettingFile."文件遭到了损坏，删除该文件后，系统会自动重建。") ;
			}
		}
	}

	private function & serviceSetting($sHost)
	{
		if(isset($this->arrServiceSettings[$sHost]))
		{
			$this->arrServiceSettings[$sHost]['name'] = $sHost ;

			// 服务数据目录路径
			$this->arrServiceSettings[$sHost]['folder_name'] = $sHost ;
			$this->arrServiceSettings[$sHost]['folder_path'] = \org\opencomb\platform\SERVICES_FOLDER . '/' . $sHost ;
			
			return $this->arrServiceSettings[$sHost] ;
		}
		else
		{
			foreach($this->arrServiceSettings as $sServiceFolder=>&$arrServiceInfo)
			{
				foreach($arrServiceInfo['domains'] as &$sDomain)
				{
					if(fnmatch($sDomain,$sHost))
					{
						$arrServiceInfo['name'] = $sServiceFolder ;
						
						// 服务数据目录路径
						$arrServiceInfo['folder_name'] = $sServiceFolder ;
						$arrServiceInfo['folder_path'] = \org\opencomb\platform\SERVICES_FOLDER . '/' . $sServiceFolder ;
						
						return $arrServiceInfo ;
					}
				}
			}

			$arrService = null ;
			return $arrService ;
		}
	}
	
	public function __destruct(){
		$sServiceSettingFile = \org\opencomb\platform\SERVICES_FOLDER.'/settings.inc.php' ;
		
		if( !file_put_contents($sServiceSettingFile,'<?php return $arrServiceSettings = '.var_export($this->arrServiceSettings,true).';') )
		{
			throw new \Exception('can not write file: '.$sServiceSettingFile) ;
		}
	}
	
	private function isUpgradeData(array $arrServiceSetting){
		if( isset($arrServiceSetting['upgradeData']) ){
			return (bool)$arrServiceSetting['upgradeData'];
		}else{
			return true;
		}
	}
	
	private function upgradeFrameworkData(array &$arrServiceSetting){
		if( isset($arrServiceSetting['framework']) 
				and isset($arrServiceSetting['framework']['dataVersion']) ){
			$sDataVersionInSetting = $arrServiceSetting['framework']['dataVersion'];
		}else{
			$sDataVersionInSetting = '0.0.0.0';
		}
		$sDataVersionInFramework = \org\jecat\framework\DATA_VERSION ;
		if( version_compare($sDataVersionInSetting , $sDataVersionInFramework ) < 0 ){
			$sUpgradeName = 'upgrade_'.str_replace('.','_',$sDataVersionInSetting).'_To_'.str_replace('.','_',$sDataVersionInFramework);
			$sFilename = $arrServiceSetting['framework_folder'].'/class/dataupgrade/'.$sUpgradeName.'.php';
			if( file_exists( $sFilename ) ){
				require_once($arrServiceSetting['framework_folder'].'/class/dataupgrade/IDataUpgrader.php');
				include_once($sFilename);
				$sClassName = 'org\jecat\framework\dataupgrade\\'.$sUpgradeName;
				$aUpgrader = new $sClassName();
				$aUpgrader->upgrade($arrServiceSetting);
				$arrServiceSetting['framework']['dataVersion'] = $sDataVersionInFramework ;
			}else{
				throw new \Exception('framework的数据升级无法运行：未找到从'.$sDataVersionInSetting.'到'.$sDataVersionInFramework.'的数据升级程序');
			}
		}
	}
	
	private function upgradePlatformData(array $arrServiceSetting){
	}
	
	private $arrServiceSettings = array() ;
	private $aServiceFactory = null ;
}