Core.What Pi Do When Request Received

Dispatch entrance script

• match api/... -> www/api.php
• match admin/... -> www/admin.php
• match feed/... -> www/feed.php
• else -> www/index.php

What do these scripts do:

• Define engine class type
• Enabled boot, make it as request process other than Pi APIs pro

Boot Initialization

• Config var, lib, host path
• Define namespace
• Autoloader
• System configuration
• Code storage

Boot Start

• Bootstrap (Pi\Application\Engine\AbstractEngine)
  • Services defined in configuration file
  • Resources defined in configuration file
    • Router Service (Zend\Mvc\Router\Http\TreeRouteStack)
  • Initialize application instance
    • ServiceManager
    • EventManager
    • Request
    • Response
  • Application boot (Zend\Mvc\Application)
    • Attach listeners @see Attach Events
    • MvcEvent
    • Trigger EVENT_BOOTSTRAP
• Listeners
  • RouteListener -> Zend\Mvc\RouteListener
  • DispatchListener -> Zend\Mvc\DispatchListener
  • ViewManager -> Zend\Mvc\View\Http\ViewManager
  • SendResponseListener -> Zend\Mvc\SendResponseListener
  • ViewStrategyListener -> Pi\Mvc\View\Http\ViewStrategyListener

Bootstrap Run

• onBootstrap
  • View service -> Zend\View\View
  • Renderer service -> Zend\View\Renderer\PhpRenderer
• onRoute
• onDispatch
  • Set controller instance, set controller EventManager
  • Set controller MvcEvent
  • Controller dispatch
    • Trigger MVC Dispatch
      • Call action method
  • Trigger EVENT_DISPATCH_ERROR if error

Attached Events

• EVENT_BOOTSTRAP
  • Pi\Mvc\View\Http\ViewStrategyListener::prepareRequestType() 99999
  • Pi\Mvc\View\Http\ViewStrategyListener::prepareRootModel() 20000
  • Zend\Mvc\View\Http\ViewManager::onBootstrap() 10000
• EVENT_ROUTE
  • Pi\Mvc\View\Http\ViewStrategyListener::initThemeAssemble() 10000
  • Zend\Mvc\RouteListener::onRoute()
  • Pi\Mvc\View\Http\ViewStrategyListener::prepareActionResult() -99999
• EVENT_DISPATCH
  • Zend\Mvc\DispatchListener::onDispatch()
  • Pi\Mvc\View\Http\ViewStrategyListener::canonizeActionResult() -70
  • Pi\Mvc\View\Http\ErrorStrategy::prepareErrorViewModel() -85
  • Pi\Mvc\View\Http\ViewStrategyListener::injectTemplate() -89
  • Zend\Mvc\View\Http\RouteNotFoundStrategy::prepareNotFoundViewModel -90
• EVENT_DISPATCH_ERROR
  • Zend\Mvc\View\Http\RouteNotFoundStrategy::detectNotFoundError()
  • Zend\Mvc\View\Http\RouteNotFoundStrategy::prepareNotFoundViewModel()
  • Zend\Mvc\View\Http\ExceptionStrategy::prepareExceptionViewModel()
  • Zend\Mvc\View\Http\InjectViewModelListener::injectViewModel() -100
• EVENT_RENDER
  • Pi\Mvc\View\Http\ViewStrategyListener::renderThemeAssemble() 10000
  • Pi\Mvc\View\Http\ViewStrategyListener::canonizeErrorResult() 10
  • Pi\Mvc\View\Http\ViewStrategyListener::canonizeThemeLayout() 5
  • Pi\Mvc\View\Http\ErrorStrategy::prepareErrorViewModel() 100
  • Zend\Mvc\View\Http\DefaultRenderingStrategy::render() -10000
• EVENT_RENDER_ERROR
  • Pi\Mvc\View\Http\ViewStrategyListener::renderThemeAssemble() 10000
  • Zend\Mvc\View\Http\ExceptionStrategy::prepareExceptionViewModel()
  • Zend\Mvc\View\Http\InjectViewModelListener::injectViewModel() -100
  • Zend\Mvc\View\Http\DefaultRenderingStrategy::render() -10000
• EVENT_FINISH
  • Pi\Mvc\View\Http\ViewStrategyListener::completeThemeAssemble() 10000

Services Created During Execution

• Application -> Pi\Mvc\Service\ApplicationFactory -> Pi\Mvc\Application
• Router -> Zend\Mvc\Router\Http\TreeRouteStack
• EventManager -> Zend\Mvc\Service\EventManagerFactory -> Zend\EventManager\EventManager
• Config -> Pi\Mvc\Service\Config
• RouteNotFoundStrategy -> Zend\Mvc\View\Http\RouteNotFoundStrategy
• ExceptionStrategy -> Zend\Mvc\View\Http\ExceptionStrategy
• DefaultRenderingStrategy -> Zend\Mvc\View\Http\DefaultRenderingStrategy
• View -> Zend\View\View
• ViewPhpRendererStrategy -> Zend\View\Strategy\PhpRendererStrategy
• ViewRenderer-> Zend\View\Renderer\PhpRenderer
• ViewHelperManager -> Pi\Mvc\Service\ViewHelperManager
• ViewResolver -> Zend\Mvc\Service\ViewResolverFactory -> Zend\View\Resolver\AggregateResolver

Additional Notes

• Where to initialize header and footer
  • EVENT_ROUTE -> initThemeAssemble() -> Pi\View\Helper\ThemeAssemble::initStrategy()
    • Append head meta from config
    • Append footscript from config
    • Set global variables from config