PHPYaf执行流程源码
介绍
Yaf框架是一个c语言编写的PHP框架,是一个以PHP扩展形式提供的PHP开发框架,相比于一般的PHP框架, 它更快,更轻便,内存占用率更低,就是本着对性能的追求,Yaf把框架中不易变的部分抽象出来,类如路由、自动加载、bootstrap、分发等,采用PHP扩展去实现,以此来保证性能。
Yaf优点
用c语言开发的PHP框架,相比原生的PHP,几乎不会带来额外的性能开销
所有的框架类,不需要编译,在PHP启动的时候加载,并常驻内存.
更快的执行速度,更少的内存占用.
灵巧的自动加载. 支持全局和局部两种加载规则, 方便类库共享.
yaf缺点
Yaf框架执行流程图
流程图说明
在application目录下有个Bootstrap.php文件,这个就是图中的第一个环节,如果存在Bootstrap()就会先执行该文件,该文件包含了一系列的初始化环节,并返回一个Yaf_Application对象,紧接着调用了它的run方法,run里面包含了图中所有环节,run首先是调用路由,路由的主要目的其实就是找到controllers文件,然后执行里面的init和action方法,或者找到所有actions的地址然后加载,在去执行对应的execute方法,如果设置了autoRender在返回的时候会执行render方法,就是view自动渲染,图中有六个双横线标出的环节,就是六个插件方法,用户可以自定义实现这几个方法,然后Yaf框架会在图中相应的步骤处调用对应的HOOK方法。
Yaf框架目录结构
+ public |- index.php //入口文件 |- .htaccess //重写规则 |+ css |+ img |+ js + conf |- application.ini //配置文件 + application |+ actions //可将controller里面的方法单独抽出来做为一个类实现 |+ index |- Main.php |+ controllers |- Index.php //默认控制器 |+ views |+ index //控制器 |- index.phtml //默认视图 |+ modules //可以按模块来区分不同业务下的控制器层 |+ admin |+ controllers |- Index.php |+ library //本地类库 |+ models //model目录 |- baseModel.php |+ plugins //插件目录 |- testPlugin.php Bootstrap.php 引导文件
Yaf配置项说明
php.ini 配置项
选项名称 | 默认值 | 说明 |
---|---|---|
yaf.environ | product | 环境名称, 当用INI作为Yaf的配置文件时, 这个指明了Yaf将要在INI配置中读取的节的名字 |
yaf.library | NULL | 全局类库的目录路径 |
yaf.cache_config | 0 | 是否缓存配置文件(只针对INI配置文件生效), 打开此选项可在复杂配置的情况下提高性能 |
yaf.name_suffix | 1 | 在处理Controller, Action, Plugin, Model的时候, 类名中关键信息是否是后缀式, 比如UserModel, 而在前缀模式下则是ModelUser |
yaf.name_separator | "" | 在处理Controller, Action, Plugin, Model的时候, 前缀和名字之间的分隔符, 默认为空, 也就是UserPlugin, 加入设置为"_", 则判断的依据就会变成:"User_Plugin", 这个主要是为了兼容ST已有的命名规范 |
yaf.forward_limit | 5 | forward最大嵌套深度 |
yaf.use_namespace | 0 | 开启的情况下, Yaf将会使用命名空间方式注册自己的类, 比如Yaf_Application将会变成Yaf\Application |
yaf.use_spl_autoload | 0 | 开启的情况下, Yaf在加载不成功的情况下, 会继续让PHP的自动加载函数加载, 从性能考虑, 除非特殊情况, 否则保持这个选项关闭 |
//php.ini [Yaf] yaf.library = "c:/huan" yaf.name_suffix = 0 yaf.name_separator = "_" yaf.environ = "product"
application.ini 配置项
选项名称 | 默认值 | 说明 |
---|---|---|
application.ext | php | PHP脚本的扩展名 |
application.bootstrap | Bootstrapplication.php | Bootstrap路径(绝对路径) |
application.library | application.directory + "/library" | 本地(自身)类库的绝对目录地址 |
application.baseUri | NULL | 在路由中, 需要忽略的路径前缀, 一般不需要设置, Yaf会自动判断. |
application.dispatcher.defaultModule | index | 默认的模块 |
application.dispatcher.throwException | True | 在出错的时候, 是否抛出异常 |
application.dispatcher.catchException | False | 是否使用默认的异常捕获Controller, 如果开启, 在有未捕获的异常的时候, 控制权会交给ErrorController的errorAction方法, 可以通过$request->getException()获得此异常对象 |
application.dispatcher.defaultController | index | 默认的控制器 |
application.dispatcher.defaultAction | index | 默认的动作 |
application.view.ext | phtml | 视图模板扩展名 |
application.modules | modules | 声明存在的模块名, 请注意, 如果你要定义这个值, 一定要定义Index Module |
//application.ini [mysql] mysql.master.user_name = word mysql.master.pass_word = 1234 mysql.slave.user_name = word mysql.slave.pass_word = 1234 [database : mysql] database.master.host = 127.0.0.1 database.slave.host = 127.0.0.2,127.0.0.3 [product : database] yaf.directory = APP_PATH "/app/" yaf.libray = APP_PATH "/libray/
可以看到在application.ini配置文件里面除了配置框架本身的配置项,还可以添加一些我们自定义的配置项,同时支持继承配置功能,在框架启动的时候会根据yaf.environ设定的节点名字去读取.
配置文件解析完毕后读取到内存的状态
Yaf_Config_Ini Object ( [_config:protected] => Array ( [mysql] => Array ( [master] => Array ( [user_name] => word ) [slave] => Array ( [user_name] => word ) ) [database] => Array ( [master] => Array ( [host] => 127.0.0.1 ) [slave] => Array ( [host] => 127.0.0.2,127.0.0.3 ) ) [yaf] => Array ( [directory] => C:\huan\apache\htdocs\yaf/app/ [libray] => C:\huan\apache\htdocs\yaf/libray/ ) ) [_readonly:protected] => 1 )
调用Yaf框架
//入口文件index.php define("APP_PATH", '/home/test/yaf'); $app = new Yaf_Application(APP_PATH . "/conf/application.ini"); $app->bootstrap()->run();
Bootstrap.php 类文件
class Bootstrap extends Yaf_Bootstrap_Abstract{ public function _initConfig(Yaf_Dispatcher $dispatcher) { //存放全局数据 $config = Yaf_Application::app()->getConfig(); Yaf_Registry::set("config", $config); //读取配置 $dispatcher->getConfig()->get('database')->master->host //关闭自动渲染 $dispatcher->autoRender(false); //设置自定的模板引擎类如smarty $dispatcher->setView( Yaf_View_Interface $request ); } public function _initDefaultName(Yaf_Dispatcher $dispatcher) { $dispatcher->setDefaultModule("Index")->setDefaultController("Index")->setDefaultAction("index"); } public function _initPlugin(Yaf_Dispatcher $dispatcher){ //注册插件 $objPlugin = new Test_Plugin(); $dispatcher->registerPlugin($objPlugin); } public function _initRegistLocalLib(Yaf_Dispatcher $dispatcher){ //注册本地类前缀, 是的对于以这些前缀开头的本地类, 都从本地类库路径中加载. Yaf_Loader::getInstance()->registerLocalNamespace(array('Foo','Msn')); } }
Plugin.php 插件类文件
class Test_Plugin extends Yaf_Plugin_Abstract { public function routerStartup(Yaf_Request_Abstract $request, Yaf_Response_Abstract $response) { } public function routerShutdown(Yaf_Request_Abstract $request, Yaf_Response_Abstract $response) { } }
Controller.php 类文件
class Index_Controller extends Yaf_Controller_Abstract { //第二种action实现方式 public $actions = array( 'one' => 'actions/index/One.php', 'two' => 'actions/index/Two.php', ); //初始化方法 public function ini(){ } //第一种action实现方式 public function index_Action() { $this->getView()->assign("content", "Hello World"); $this->getView()->display(); } }
Action.php 类文件
Class One_Action extends Yaf_Action_Abstract{ public function execute(){ } }
Model 类文件
class Base_Model { public function getDataList(){ } }
注意: Yaf并没有实现Model层,需要自己实现或者调用现成的Model库.
扩展-核心功能模块实现
扩展 Yaf_Application 类注册
YAF_STARTUP_FUNCTION(application) { //宏替换一下 ZEND_MINIT_FUNCTION(yaf_##module) //PHP内核中对PHP类的实现是通过zend_class_entry结构体实现的 zend_class_entry ce; //相当于对ce初始化,指定一个类名称 Ap_Application //指定类的成员方法列表 ap_application_methods 结构体数组指针 YAF_INIT_CLASS_ENTRY(ce, "Yaf_Application", "Yaf\\Application", yaf_application_methods); //向PHP注册类,PHP中由class_table维护全局的类数组 //可以简单理解为把类添加到这个数组中,这样就可以在 //PHP中找到这个类了,内核中有一组类似的注册函数 //用来注册接口、类、子类、接口实现、抽象类等 yaf_application_ce = zend_register_internal_class_ex(&ce, NULL, NULL TSRMLS_CC); //指定类的属性 yaf_application_ce->ce_flags |= ZEND_ACC_FINAL_CLASS; //设置类内部的一些变量和属性 zend_declare_property_null(yaf_application_ce, ZEND_STRL(YAF_APPLICATION_PROPERTY_NAME_CONFIG), ZEND_ACC_PROTECTED TSRMLS_CC); zend_declare_property_null(yaf_application_ce, ZEND_STRL(YAF_APPLICATION_PROPERTY_NAME_DISPATCHER), ZEND_ACC_PROTECTED TSRMLS_CC); zend_declare_property_null(yaf_application_ce, ZEND_STRL(YAF_APPLICATION_PROPERTY_NAME_APP), ZEND_ACC_STATIC | ZEND_ACC_PROTECTED TSRMLS_CC); zend_declare_property_null(yaf_application_ce, ZEND_STRL(YAF_APPLICATION_PROPERTY_NAME_MODULES), ZEND_ACC_PROTECTED TSRMLS_CC); zend_declare_property_bool(yaf_application_ce, ZEND_STRL(YAF_APPLICATION_PROPERTY_NAME_RUN), 0, ZEND_ACC_PROTECTED TSRMLS_CC); zend_declare_property_string(yaf_application_ce, ZEND_STRL(YAF_APPLICATION_PROPERTY_NAME_ENV), YAF_G(environ), ZEND_ACC_PROTECTED TSRMLS_CC); zend_declare_property_long(yaf_application_ce, ZEND_STRL(YAF_APPLICATION_PROPERTY_NAME_ERRNO), 0, ZEND_ACC_PROTECTED TSRMLS_CC); zend_declare_property_string(yaf_application_ce, ZEND_STRL(YAF_APPLICATION_PROPERTY_NAME_ERRMSG), "", ZEND_ACC_PROTECTED TSRMLS_CC); //内核中有一组这样的属性标记来指定类和变量的性质 /* method flags (types) #define ZEND_ACC_STATIC 0x01 #define ZEND_ACC_ABSTRACT 0x02 #define ZEND_ACC_FINAL 0x04 #define ZEND_ACC_IMPLEMENTED_ABSTRACT 0x08 class flags (types) #define ZEND_ACC_IMPLICIT_ABSTRACT_CLASS 0x10 #define ZEND_ACC_EXPLICIT_ABSTRACT_CLASS 0x20 #define ZEND_ACC_FINAL_CLASS 0x40 #define ZEND_ACC_INTERFACE 0x80 */ return SUCCESS; } //类成员函数的声明 zend_function_entry yaf_application_methods[] = { PHP_ME(yaf_application, construct, yaf_application_construct_arginfo, ZEND_ACC_PUBLIC | ZEND_ACC_CTOR) PHP_ME(yaf_application, run, yaf_application_run_arginfo, ZEND_ACC_PUBLIC) PHP_ME(yaf_application, execute, yaf_application_execute_arginfo, ZEND_ACC_PUBLIC) PHP_ME(yaf_application, app, yaf_application_app_arginfo, ZEND_ACC_PUBLIC | ZEND_ACC_STATIC) YAF_ME(yaf_application_environ, "environ", yaf_application_environ_arginfo, ZEND_ACC_PUBLIC) PHP_ME(yaf_application, bootstrap, yaf_application_bootstrap_arginfo, ZEND_ACC_PUBLIC) PHP_ME(yaf_application, getConfig, yaf_application_getconfig_arginfo, ZEND_ACC_PUBLIC) PHP_ME(yaf_application, getModules, yaf_application_getmodule_arginfo, ZEND_ACC_PUBLIC) PHP_ME(yaf_application, getDispatcher, yaf_application_getdispatch_arginfo, ZEND_ACC_PUBLIC) PHP_ME(yaf_application, setAppDirectory, yaf_application_setappdir_arginfo, ZEND_ACC_PUBLIC) PHP_ME(yaf_application, getAppDirectory, yaf_application_void_arginfo, ZEND_ACC_PUBLIC) PHP_ME(yaf_application, getLastErrorNo, yaf_application_void_arginfo, ZEND_ACC_PUBLIC) PHP_ME(yaf_application, getLastErrorMsg, yaf_application_void_arginfo, ZEND_ACC_PUBLIC) PHP_ME(yaf_application, clearLastError, yaf_application_void_arginfo, ZEND_ACC_PUBLIC) PHP_ME(yaf_application, destruct, NULL, ZEND_ACC_PUBLIC | ZEND_ACC_DTOR) PHP_ME(yaf_application, clone, NULL, ZEND_ACC_PRIVATE | ZEND_ACC_CLONE) PHP_ME(yaf_application, sleep, NULL, ZEND_ACC_PRIVATE) PHP_ME(yaf_application, wakeup, NULL, ZEND_ACC_PRIVATE) {NULL, NULL, NULL} };
上面这个就是在扩展里面注册一个类的实现,Yaf其他的类文件在注册类的时候也几乎和上面方式一致,具体看下源码就可以了,下面将从实例化一个Yaf_Application类开始分析。
扩展 Yaf_Application 类构造函数 construct 实现
PHP_METHOD(yaf_application, construct) { yaf_config_t *zconfig; yaf_request_t *request; yaf_dispatcher_t *zdispatcher; yaf_application_t *app, *self; yaf_loader_t *loader; zval *config; zval *section = NULL; //获取yaf_application::_app变量值,默认为0 app = zend_read_static_property(yaf_application_ce, ZEND_STRL(YAF_APPLICATION_PROPERTY_NAME_APP), 1 TSRMLS_CC); #if PHP_YAF_DEBUG php_error_docref(NULL TSRMLS_CC, E_STRICT, "Yaf is running in debug mode"); #endif //如果app有值则报错,也就是当前类只能被实例化一次 if (!ZVAL_IS_NULL(app)) { yaf_trigger_error(YAF_ERR_STARTUP_FAILED TSRMLS_CC, "Only one application can be initialized"); RETURN_FALSE; } //获取当前的对象,也就是php里面的$this self = getThis(); //获取参数,把配置文件路径或者配置数组传递进来 //section配置文件中的节点名字,默认product if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "z|z", &config, §ion) == FAILURE) { YAF_UNINITIALIZED_OBJECT(getThis()); return; } if (!section || Z_TYPE_P(section) != IS_STRING || !Z_STRLEN_P(section)) { MAKE_STD_ZVAL(section); ZVAL_STRING(section, YAF_G(environ), 0); //获取config对象 zconfig = yaf_config_instance(NULL, config, section TSRMLS_CC); efree(section); } else { //获取config对象 zconfig = yaf_config_instance(NULL, config, section TSRMLS_CC); } //解析配置文件,并将配置信息保存在zconfig对象中 if (zconfig == NULL || Z_TYPE_P(zconfig) != IS_OBJECT || !instanceof_function(Z_OBJCE_P(zconfig), yaf_config_ce TSRMLS_CC) || yaf_application_parse_option(zend_read_property(yaf_config_ce, zconfig, ZEND_STRL(YAF_CONFIG_PROPERT_NAME), 1 TSRMLS_CC) TSRMLS_CC) == FAILURE) { YAF_UNINITIALIZED_OBJECT(getThis()); yaf_trigger_error(YAF_ERR_STARTUP_FAILED TSRMLS_CC, "Initialization of application config failed"); RETURN_FALSE; } //获取 request 对象,请求的信息保存在里面 request = yaf_request_instance(NULL, YAF_G(base_uri) TSRMLS_CC); if (YAF_G(base_uri)) { efree(YAF_G(base_uri)); YAF_G(base_uri) = NULL; } if (!request) { YAF_UNINITIALIZED_OBJECT(getThis()); yaf_trigger_error(YAF_ERR_STARTUP_FAILED TSRMLS_CC, "Initialization of request failed"); RETURN_FALSE; } //获取dispatcher对象,主要在里面调用插件、路由、分发等 zdispatcher = yaf_dispatcher_instance(NULL TSRMLS_CC); if (NULL == zdispatcher || Z_TYPE_P(zdispatcher) != IS_OBJECT || !instanceof_function(Z_OBJCE_P(zdispatcher), yaf_dispatcher_ce TSRMLS_CC)) { YAF_UNINITIALIZED_OBJECT(getThis()); yaf_trigger_error(YAF_ERR_STARTUP_FAILED TSRMLS_CC, "Instantiation of application dispatcher failed"); RETURN_FALSE; } //把request对象保存在zdispatcher对像属性中 yaf_dispatcher_set_request(zdispatcher, request TSRMLS_CC); //保存zconfig对象到当前yaf_application对象属性中 zend_update_property(yaf_application_ce, self, ZEND_STRL(YAF_APPLICATION_PROPERTY_NAME_CONFIG), zconfig TSRMLS_CC); //保存zdispatcher对象到当前yaf_application对象属性中 zend_update_property(yaf_application_ce, self, ZEND_STRL(YAF_APPLICATION_PROPERTY_NAME_DISPATCHER), zdispatcher TSRMLS_CC); zval_ptr_dtor(&request); zval_ptr_dtor(&zdispatcher); zval_ptr_dtor(&zconfig); //是否指定本地类库地址 if (YAF_G(local_library)) { //获取一个load加载类,并同时向内核注册一个自动加载器autoload //之后在代码中new class()都会调用扩展中注册的自动加载器 loader = yaf_loader_instance(NULL, YAF_G(local_library), strlen(YAF_G(global_library))? YAF_G(global_library) : NULL TSRMLS_CC); efree(YAF_G(local_library)); YAF_G(local_library) = NULL; } else { char *local_library; //获取一个默认的本地类库地址 spprintf(&local_library, 0, "%s%c%s", YAF_G(directory), DEFAULT_SLASH, YAF_LIBRARY_DIRECTORY_NAME); //同上面解释一致 loader = yaf_loader_instance(NULL, local_library, strlen(YAF_G(global_library))? YAF_G(global_library) : NULL TSRMLS_CC); efree(local_library); } if (!loader) { YAF_UNINITIALIZED_OBJECT(getThis()); yaf_trigger_error(YAF_ERR_STARTUP_FAILED TSRMLS_CC, "Initialization of application auto loader failed"); RETURN_FALSE; } //赋值对象属性 zend_update_property_bool(yaf_application_ce, self, ZEND_STRL(YAF_APPLICATION_PROPERTY_NAME_RUN), 0 TSRMLS_CC); zend_update_property_string(yaf_application_ce, self, ZEND_STRL(YAF_APPLICATION_PROPERTY_NAME_ENV), YAF_G(environ) TSRMLS_CC); //这个modules一定会存在,默认是Index if (YAF_G(modules)) { zend_update_property(yaf_application_ce, self, ZEND_STRL(YAF_APPLICATION_PROPERTY_NAME_MODULES), YAF_G(modules) TSRMLS_CC); Z_DELREF_P(YAF_G(modules)); YAF_G(modules) = NULL; } else { zend_update_property_null(yaf_application_ce, self, ZEND_STRL(YAF_APPLICATION_PROPERTY_NAME_MODULES) TSRMLS_CC); } //yaf_application::_app 赋值成当前self对象 zend_update_static_property(yaf_application_ce, ZEND_STRL(YAF_APPLICATION_PROPERTY_NAME_APP), self TSRMLS_CC); }
PHP_METHOD(Yaf_application, bootstrap) 扩展实现
PHP_METHOD(yaf_application, bootstrap) { char *bootstrap_path; uint len, retval = 1; zend_class_entry **ce; yaf_application_t *self = getThis(); //判断 Bootstrap 类是否存在,默认第一次肯定不存在 //因为还没有加载注册进来 if (zend_hash_find(EG(class_table), YAF_DEFAULT_BOOTSTRAP_LOWER, YAF_DEFAULT_BOOTSTRAP_LEN, (void **) &ce) != SUCCESS) { //判断是否指定了bootstrap文件路径 if (YAF_G(bootstrap)) { bootstrap_path = estrdup(YAF_G(bootstrap)); len = strlen(YAF_G(bootstrap)); } else { //没有指定则使用默认路径 len = spprintf(&bootstrap_path, 0, "%s%c%s.%s", YAF_G(directory), DEFAULT_SLASH, YAF_DEFAULT_BOOTSTRAP, YAF_G(ext)); } //导入bootstrap文件,内核如果发现是类,则会自动注册上 if (!yaf_loader_import(bootstrap_path, len + 1, 0 TSRMLS_CC)) { php_error_docref(NULL TSRMLS_CC, E_WARNING, "Couldn't find bootstrap file %s", bootstrap_path); retval = 0; //获取 bootstrap 类 } else if (zend_hash_find(EG(class_table), YAF_DEFAULT_BOOTSTRAP_LOWER, YAF_DEFAULT_BOOTSTRAP_LEN, (void **) &ce) != SUCCESS) { php_error_docref(NULL TSRMLS_CC, E_WARNING, "Couldn't find class %s in %s", YAF_DEFAULT_BOOTSTRAP, bootstrap_path); retval = 0; //判断该类是否继承Yaf_Bootstrap_Abstract } else if (!instanceof_function(*ce, yaf_bootstrap_ce TSRMLS_CC)) { php_error_docref(NULL TSRMLS_CC, E_WARNING, "Expect a %s instance, %s give", yaf_bootstrap_ce->name, (*ce)->name); retval = 0; } efree(bootstrap_path); } if (!retval) { RETURN_FALSE; } else { zval *bootstrap; HashTable *methods; yaf_dispatcher_t *dispatcher; //实例化一个bootstrap对象 MAKE_STD_ZVAL(bootstrap); object_init_ex(bootstrap, *ce); //获取dispatcher 对象 dispatcher = zend_read_property(yaf_application_ce, self, ZEND_STRL(YAF_APPLICATION_PROPERTY_NAME_DISPATCHER), 1 TSRMLS_CC); //获取bootstrap类里面所有的方法,每个类都用一个函数表function_table来记录 //方法名和对应结构体指针 methods = &((*ce)->function_table); //循环bootstrap类里面所有的方法 //内核中对array的实现是通过hash_table实现的,内核中会 //看到到处使用hash_table的地方,可以简单理解为数组的操作 for(zend_hash_internal_pointer_reset(methods); zend_hash_has_more_elements(methods) == SUCCESS; zend_hash_move_forward(methods)) { char *func; uint len; ulong idx; //获取第一个方法名字 zend_hash_get_current_key_ex(methods, &func, &len, &idx, 0, NULL); /* cann't use ZEND_STRL in strncasecmp, it cause a compile failed in VS2009 */ #define YAF_BOOTSTRAP_INITFUNC_PREFIX "_init" //Bootstrap类实现了一系列的_init开头的方法 //这里是比较函数func是否以_init开头 if (strncasecmp(func, YAF_BOOTSTRAP_INITFUNC_PREFIX, sizeof(YAF_BOOTSTRAP_INITFUNC_PREFIX)-1)) { continue; } //调用所有以_init开头的函数,入参统一为dispatcher对象 zend_call_method(&bootstrap, *ce, NULL, func, len - 1, NULL, 1, dispatcher, NULL TSRMLS_CC); /** an uncaught exception threw in function call */ if (EG(exception)) { zval_ptr_dtor(&bootstrap); RETURN_FALSE; } } zval_ptr_dtor(&bootstrap); } //最后会返回application对象自身 RETVAL_ZVAL(self, 1, 0); }
PHP_METHOD(yaf_application, run) 扩展实现
PHP_METHOD(yaf_application, run) { zval *running; yaf_dispatcher_t *dispatcher; yaf_response_t *response; yaf_application_t *self = getThis(); //获取属性值,默认第一次为0 running = zend_read_property(yaf_application_ce, self, ZEND_STRL(YAF_APPLICATION_PROPERTY_NAME_RUN), 1 TSRMLS_CC); if (IS_BOOL == Z_TYPE_P(running) && Z_BVAL_P(running)) { yaf_trigger_error(YAF_ERR_STARTUP_FAILED TSRMLS_CC, "An application instance already run"); RETURN_TRUE; } //赋值为1,可以看出来当前application对象中的run函数只能被调用一次 ZVAL_BOOL(running, 1); zend_update_property(yaf_application_ce, self, ZEND_STRL(YAF_APPLICATION_PROPERTY_NAME_RUN), running TSRMLS_CC); //获取dispatcher对象 dispatcher = zend_read_property(yaf_application_ce, self, ZEND_STRL(YAF_APPLICATION_PROPERTY_NAME_DISPATCHER), 1 TSRMLS_CC); //进行路由分发等工作 if ((response = yaf_dispatcher_dispatch(dispatcher TSRMLS_CC))) { RETURN_ZVAL(response, 1, 1); } RETURN_FALSE; }
yaf_dispatcher_dispatch() 方法里面主要分两部分,路由+分发,其中夹杂着一些插件调用,就是上图中双横线标出的环节,先看下官方对插件的说明。
触发顺序 | 名称 | 触发时机 |
---|---|---|
1 | routerStartup | 在路由之前触发 |
2 | routerShutdown | 路由结束之后触发 |
3 | dispatchLoopStartup | 分发循环开始之前被触发 |
4 | preDispatch | 分发之前触发 |
5 | postDispatch | 分发结束之后触发 |
6 | dispatchLoopShutdown | 分发循环结束之后触发 |
扩展中插件方法名用宏表示
#define YAF_PLUGIN_HOOK_ROUTESTARTUP "routerstartup" #define YAF_PLUGIN_HOOK_ROUTESHUTDOWN "routershutdown" #define YAF_PLUGIN_HOOK_LOOPSTARTUP "dispatchloopstartup" #define YAF_PLUGIN_HOOK_PREDISPATCH "predispatch" #define YAF_PLUGIN_HOOK_POSTDISPATCH "postdispatch" #define YAF_PLUGIN_HOOK_LOOPSHUTDOWN "dispatchloopshutdown" #define YAF_PLUGIN_HOOK_PRERESPONSE "preresponse"
yaf_dispatcher_dispatch(yaf_dispatcher_t *dispatcher TSRMLS_DC)
yaf_response_t * yaf_dispatcher_dispatch(yaf_dispatcher_t *dispatcher TSRMLS_DC) { zval *return_response, *plugins, *view; yaf_response_t *response; yaf_request_t *request; uint nesting = YAF_G(forward_limit); //获取response对象 response = yaf_response_instance(NULL, sapi_module.name TSRMLS_CC); //获取request对象 request = zend_read_property(yaf_dispatcher_ce, dispatcher, ZEND_STRL(YAF_DISPATCHER_PROPERTY_NAME_REQUEST), 1 TSRMLS_CC); //获取插件数组对象,这是一个数组,里面每个值都是一个插件对象 //但前提是我们创建插件类,实例化之后,注册进dispatcher对象里 plugins = zend_read_property(yaf_dispatcher_ce, dispatcher, ZEND_STRL(YAF_DISPATCHER_PROPERTY_NAME_PLUGINS), 1 TSRMLS_CC); //如果不是对象则报错 if (IS_OBJECT != Z_TYPE_P(request)) { yaf_trigger_error(YAF_ERR_TYPE_ERROR TSRMLS_CC, "Expect a %s instance", yaf_request_ce->name); zval_ptr_dtor(&response); return NULL; } /* route request */ //是否已经路由过 if (!yaf_request_is_routed(request TSRMLS_CC)) { //调用插件routerstartup方法,如果注册的情况 YAF_PLUGIN_HANDLE(plugins, YAF_PLUGIN_HOOK_ROUTESTARTUP, request, response); //捕获异常 Error_Controller,开启的情况下,对应配置项为 catchException YAF_EXCEPTION_HANDLE(dispatcher, request, response); //进行路由,就是找到 controller、action、model if (!yaf_dispatcher_route(dispatcher, request TSRMLS_CC)) { //抛出异常 yaf_trigger_error(YAF_ERR_ROUTE_FAILED TSRMLS_CC, "Routing request failed"); //捕获异常 Error_Controller YAF_EXCEPTION_HANDLE_NORET(dispatcher, request, response); zval_ptr_dtor(&response); return NULL; } //设置Controller、action、model yaf_dispatcher_fix_default(dispatcher, request TSRMLS_CC); //调用插件routerShutdown方法 YAF_PLUGIN_HANDLE(plugins, YAF_PLUGIN_HOOK_ROUTESHUTDOWN, request, response); //捕获异常 YAF_EXCEPTION_HANDLE(dispatcher, request, response); //已经路由完毕标识 (void)yaf_request_set_routed(request, 1 TSRMLS_CC); } else { //设置Controller、action、model yaf_dispatcher_fix_default(dispatcher, request TSRMLS_CC); } //调用插件dispatchLoopStartup方法 YAF_PLUGIN_HANDLE(plugins, YAF_PLUGIN_HOOK_LOOPSTARTUP, request, response); //捕获异常 YAF_EXCEPTION_HANDLE(dispatcher, request, response); //获取view对象 view = yaf_dispatcher_init_view(dispatcher, NULL, NULL TSRMLS_CC); if (!view) { return NULL; } do { //调用插件preDispatch方法 YAF_PLUGIN_HANDLE(plugins, YAF_PLUGIN_HOOK_PREDISPATCH, request, response); //捕获异常 YAF_EXCEPTION_HANDLE(dispatcher, request, response); //开始分发 if (!yaf_dispatcher_handle(dispatcher, request, response, view TSRMLS_CC)) { YAF_EXCEPTION_HANDLE(dispatcher, request, response); zval_ptr_dtor(&response); return NULL; } yaf_dispatcher_fix_default(dispatcher, request TSRMLS_CC); //调用插件postDispatch方法 YAF_PLUGIN_HANDLE(plugins, YAF_PLUGIN_HOOK_POSTDISPATCH, request, response); //捕获异常 YAF_EXCEPTION_HANDLE(dispatcher, request, response); //这个就是控制分发次数,配置项中的forward_limit } while (--nesting > 0 && !yaf_request_is_dispatched(request TSRMLS_CC)); //调用插件dispatchLoopShutdown方法 YAF_PLUGIN_HANDLE(plugins, YAF_PLUGIN_HOOK_LOOPSHUTDOWN, request, response); //捕获异常 YAF_EXCEPTION_HANDLE(dispatcher, request, response); //如果分发次数全部耗尽,且还有异常的话 if (0 == nesting && !yaf_request_is_dispatched(request TSRMLS_CC)) { yaf_trigger_error(YAF_ERR_DISPATCH_FAILED TSRMLS_CC, "The max dispatch nesting %ld was reached", YAF_G(forward_limit)); YAF_EXCEPTION_HANDLE_NORET(dispatcher, request, response); zval_ptr_dtor(&response); return NULL; } //最后返回一个 response 对象 return_response = zend_read_property(yaf_dispatcher_ce, dispatcher, ZEND_STRL(YAF_DISPATCHER_PROPERTY_NAME_RETURN), 1 TSRMLS_CC); if (!Z_BVAL_P(return_response)) { (void)yaf_response_send(response TSRMLS_CC); yaf_response_clear_body(response, NULL, 0 TSRMLS_CC); } return response; }
yaf_dispatcher_route() 路由入口
int yaf_dispatcher_route(yaf_dispatcher_t *dispatcher, yaf_request_t *request TSRMLS_DC) { zend_class_entry *router_ce; //获取路由器对象,dispatcher初始化时会创建内置路由器 yaf_router_t *router = zend_read_property(yaf_dispatcher_ce, dispatcher, ZEND_STRL(YAF_DISPATCHER_PROPERTY_NAME_ROUTER), 1 TSRMLS_CC); if (IS_OBJECT == Z_TYPE_P(router)) { //是否内置的路由器 if ((router_ce = Z_OBJCE_P(router)) == yaf_router_ce) { //执行路由器里面的路由协议 yaf_router_route(router, request TSRMLS_CC); } else { //自定义路由器 /* user custom router */ zval *ret = zend_call_method_with_1_params(&router, router_ce, NULL, "route", &ret, request); if (Z_TYPE_P(ret) == IS_BOOL && Z_BVAL_P(ret) == 0) { yaf_trigger_error(YAF_ERR_ROUTE_FAILED TSRMLS_CC, "Routing request faild"); return 0; } } return 1; } return 0; }
这段代码是路由环节的入口,dispatcher初始化时会创建内置路由器,这里只涉及路由器概念,上面的自定义并不是自定义路由协议,而是你可以重新写一个路由器,我们通常在项目中自定义路由协议就可以了,没有必要自己实现一个路由器。而且框架中其实也是写死了内置路由器,没有给你set自定义路由器的接口。
yaf_router_route() 执行路由
int yaf_router_route(yaf_router_t *router, yaf_request_t *request TSRMLS_DC) { zval *routers, *ret; yaf_route_t **route; HashTable *ht; //获取路由协议,可以添加多层路由协议,类似于多重插件 //通过addRoute方法向路由器注册自己的路由协议,默认的 //路由协议是Yaf_Route_Static routers = zend_read_property(yaf_router_ce, router, ZEND_STRL(YAF_ROUTER_PROPERTY_NAME_ROUTES), 1 TSRMLS_CC); ht = Z_ARRVAL_P(routers); //for循环依次调用路由协议的route方法,成功则记下当前 //生效的这个路由协议的索引位置,并设置request为已路由 //不成功则继续调用下一个路由协议。 for(zend_hash_internal_pointer_end(ht); zend_hash_has_more_elements(ht) == SUCCESS; zend_hash_move_backwards(ht)) { if (zend_hash_get_current_data(ht, (void**)&route) == FAILURE) { continue; } //调用路由协议对象的route方法 zend_call_method_with_1_params(route, Z_OBJCE_PP(route), NULL, "route", &ret, request); if (IS_BOOL != Z_TYPE_P(ret) || !Z_BVAL_P(ret)) { zval_ptr_dtor(&ret); continue; } else { char *key; uint len = 0; ulong idx = 0; //记录当前路由协议的索引 switch(zend_hash_get_current_key_ex(ht, &key, &len, &idx, 0, NULL)) { case HASH_KEY_IS_LONG: zend_update_property_long(yaf_router_ce, router, ZEND_STRL(YAF_ROUTER_PROPERTY_NAME_CURRENT_ROUTE), idx TSRMLS_CC); break; case HASH_KEY_IS_STRING: if (len) { zend_update_property_string(yaf_router_ce, router, ZEND_STRL(YAF_ROUTER_PROPERTY_NAME_CURRENT_ROUTE), key TSRMLS_CC); } break; } //设置为已路由 yaf_request_set_routed(request, 1 TSRMLS_CC); zval_ptr_dtor(&ret); break; } } return 1; }
内置的路由协议
Yaf_Route_Static
Yaf_Route_Simple
Yaf_Route_Supervar
Yaf_Route_Rewrite
Yaf_Route_Regex
Yaf_Route_Map
上面几种路由协议源代码列表
yaf_route_static.c yaf_route_simple.c yaf_route_supervar.c yaf_route_rewrite.c yaf_route_regex.c yaf_route_map.c
无路是哪个路由协议最后功能都是为了设置module,controller,action的名称
yaf_dispatcher_handle() 开始分发
//只看下主逻辑 int yaf_dispatcher_handle(yaf_dispatcher_t *dispatcher, yaf_request_t *request, yaf_response_t *response, yaf_view_t *view TSRMLS_DC) { zend_class_entry *request_ce; //代码根目录 char *app_dir = YAF_G(directory); request_ce = Z_OBJCE_P(request); //代表request开始,如果出现异常,则会在把当前状态改成0 //在分发循环while会判断这个值,如果为0则代表之前分发中 //存在异常所以保证在分发forward_limit次数内再继续分发 //如果等于1则代表没有异常情况,分发完毕. yaf_request_set_dispatched(request, 1 TSRMLS_CC); if (!app_dir) { yaf_trigger_error(YAF_ERR_STARTUP_FAILED TSRMLS_CC, "%s requires %s(which set the application.directory) to be initialized first", yaf_dispatcher_ce->name, yaf_application_ce->name); return 0; } else { int is_def_module = 0; /* int is_def_ctr = 0; */ zval *module, *controller, *dmodule, /* *dcontroller,*/ *instantly_flush; zend_class_entry *ce; yaf_controller_t *executor; zend_function *fptr; //获取module module = zend_read_property(request_ce, request, ZEND_STRL(YAF_REQUEST_PROPERTY_NAME_MODULE), 1 TSRMLS_CC); //获取controller controller = zend_read_property(request_ce, request, ZEND_STRL(YAF_REQUEST_PROPERTY_NAME_CONTROLLER), 1 TSRMLS_CC); //获取默认module默认为Index dmodule = zend_read_property(yaf_dispatcher_ce, dispatcher, ZEND_STRL(YAF_DISPATCHER_PROPERTY_NAME_MODULE), 1 TSRMLS_CC); if (Z_TYPE_P(module) != IS_STRING || !Z_STRLEN_P(module)) { yaf_trigger_error(YAF_ERR_DISPATCH_FAILED TSRMLS_CC, "Unexcepted a empty module name"); return 0; //判断当前请求的model是否在modules里面,默认情况modules里面也是Index //如果自定义其他的model,就需要添加在modules这个选项里面,添加的无论是 //什么model都需要存在Index这个model,类似于:Index,Admin,Main这样,不添 //加的话会提示错误. } else if (!yaf_application_is_module_name(Z_STRVAL_P(module), Z_STRLEN_P(module) TSRMLS_CC)) { yaf_trigger_error(YAF_ERR_NOTFOUND_MODULE TSRMLS_CC, "There is no module %s", Z_STRVAL_P(module)); return 0; } if (Z_TYPE_P(controller) != IS_STRING || !Z_STRLEN_P(controller)) { yaf_trigger_error(YAF_ERR_DISPATCH_FAILED TSRMLS_CC, "Unexcepted a empty controller name"); return 0; } //判断当前的model是否等于默认的model //如果等于就去默认的Controllers目录下找 //控制器,如果不等于这个值就为0则就去 //modules/model/controllers/下面找控制器 //后面会有体现 if (strncasecmp(Z_STRVAL_P(dmodule), Z_STRVAL_P(module), Z_STRLEN_P(module)) == 0) { is_def_module = 1; } //找到对应的controller类 ce = yaf_dispatcher_get_controller(app_dir, Z_STRVAL_P(module), Z_STRVAL_P(controller), Z_STRLEN_P(controller), is_def_module TSRMLS_CC); if (!ce) { return 0; } else { zval *action, *render, *ret = NULL; char *action_lower, *func_name, *view_dir; uint func_name_len; yaf_controller_t *icontroller; //实例化controoller对象 MAKE_STD_ZVAL(icontroller); object_init_ex(icontroller, ce); yaf_controller_construct(ce, icontroller, request, response, view, NULL TSRMLS_CC); if (EG(exception)) { zval_ptr_dtor(&icontroller); return 0; } //获取view路径,如果这个is_def_module为1 //则取默认的views目录,如果为0,则取 modules/model/views 这个目录 if (is_def_module) { spprintf(&view_dir, 0, "%s%c%s", app_dir, DEFAULT_SLASH, "views"); } else { spprintf(&view_dir, 0, "%s%c%s%c%s%c%s", app_dir, DEFAULT_SLASH, "modules", DEFAULT_SLASH, Z_STRVAL_P(module), DEFAULT_SLASH, "views"); } if (YAF_G(view_directory)) { efree(YAF_G(view_directory)); } YAF_G(view_directory) = view_dir; zend_update_property(ce, icontroller, ZEND_STRL(YAF_CONTROLLER_PROPERTY_NAME_NAME), controller TSRMLS_CC); //获取action action = zend_read_property(request_ce, request, ZEND_STRL(YAF_REQUEST_PROPERTY_NAME_ACTION), 1 TSRMLS_CC); action_lower = zend_str_tolower_dup(Z_STRVAL_P(action), Z_STRLEN_P(action)); /* because the action might call the forward to override the old action */ Z_ADDREF_P(action); //拼接一个action函数名 func_name_len = spprintf(&func_name, 0, "%s%s", action_lower, "action"); efree(action_lower); //判断在controller对象里面是否有这个action函数,如 indexaction if (zend_hash_find(&((ce)->function_table), func_name, func_name_len + 1, (void **)&fptr) == SUCCESS) { //省略...... executor = icontroller; //如果存在这个action函数则调用 zend_call_method(&icontroller, ce, NULL, func_name, func_name_len, &ret, 0, NULL, NULL TSRMLS_CC); efree(func_name); //省略...... //如果不存在这个action函数则按第二种action方式去获 //取看看在这个controller里面是否存在actions变量,因 //为有可能在这个actions数组变量里面记录所有的action //类方法地址 } else if ((ce = yaf_dispatcher_get_action(app_dir, icontroller, Z_STRVAL_P(module), is_def_module, Z_STRVAL_P(action), Z_STRLEN_P(action) TSRMLS_CC)) && (zend_hash_find(&(ce)->function_table, YAF_ACTION_EXECUTOR_NAME, sizeof(YAF_ACTION_EXECUTOR_NAME), (void **)&fptr) == SUCCESS)) { //省略...... //实例化这个Action类 MAKE_STD_ZVAL(iaction); object_init_ex(iaction, ce); executor = iaction; //省略...... //调用这个Action类里面的execute方法,可以看到这个方法是固定的 zend_call_method_with_0_params(&iaction, ce, NULL, "execute", &ret); //省略...... } else { efree(func_name); zval_ptr_dtor(&icontroller); return 0; } //下面这部分就是视图view自动渲染部分,不在详细分析了 if (executor) { int auto_render = 1; render = zend_read_property(ce, executor, ZEND_STRL(YAF_CONTROLLER_PROPERTY_NAME_RENDER), 1 TSRMLS_CC); instantly_flush = zend_read_property(yaf_dispatcher_ce, dispatcher, ZEND_STRL(YAF_DISPATCHER_PROPERTY_NAME_FLUSH), 1 TSRMLS_CC); if (render == EG(uninitialized_zval_ptr)) { render = zend_read_property(yaf_dispatcher_ce, dispatcher, ZEND_STRL(YAF_DISPATCHER_PROPERTY_NAME_RENDER), 1 TSRMLS_CC); auto_render = Z_BVAL_P(render); } else if (Z_TYPE_P(render) <= IS_BOOL && !Z_BVAL_P(render)) { auto_render = 0; } //是否自动渲染view if (auto_render) { ret = NULL; if (!Z_BVAL_P(instantly_flush)) { zend_call_method_with_1_params(&executor, ce, NULL, "render", &ret, action); zval_ptr_dtor(&executor); if (!ret) { zval_ptr_dtor(&action); return 0; } else if (IS_BOOL == Z_TYPE_P(ret) && !Z_BVAL_P(ret)) { zval_ptr_dtor(&ret); zval_ptr_dtor(&action); return 0; } if (Z_TYPE_P(ret) == IS_STRING && Z_STRLEN_P(ret)) { yaf_response_alter_body(response, NULL, 0, Z_STRVAL_P(ret), Z_STRLEN_P(ret), YAF_RESPONSE_APPEND TSRMLS_CC); } zval_ptr_dtor(&ret); } else { zend_call_method_with_1_params(&executor, ce, NULL, "display", &ret, action); zval_ptr_dtor(&executor); if (!ret) { zval_ptr_dtor(&action); return 0; } if ((Z_TYPE_P(ret) == IS_BOOL && !Z_BVAL_P(ret))) { zval_ptr_dtor(&ret); zval_ptr_dtor(&action); return 0; } zval_ptr_dtor(&ret); } } else { zval_ptr_dtor(&executor); } } zval_ptr_dtor(&action); } return 1; } return 0; }
yaf_dispatcher_get_controller() 获取 controller 类
zend_class_entry * yaf_dispatcher_get_controller(char* app_dir, char *module, char *controller, int len, int def_module TSRMLS_DC) { char *directory = NULL; int directory_len = 0; //这块之前说过,如果def_module等于1走默认的路径 //如果等于0则走modules下的路径 if (def_module) { // directory = app_dir/controllers directory_len = spprintf(&directory, 0, "%s%c%s", app_dir, DEFAULT_SLASH, YAF_CONTROLLER_DIRECTORY_NAME); } else { // directory = app_dir/modules/model/controllers directory_len = spprintf(&directory, 0, "%s%c%s%c%s%c%s", app_dir, DEFAULT_SLASH, YAF_MODULE_DIRECTORY_NAME, DEFAULT_SLASH, module, DEFAULT_SLASH, YAF_CONTROLLER_DIRECTORY_NAME); } if (directory_len) { char *class = NULL; char *class_lowercase = NULL; int class_len = 0; zend_class_entry **ce = NULL; // 这里根据配置区分前缀模式还是后缀模式 // Controller_Index 或者 Index_Controller // ControllerIndex 或者 IndexController if (YAF_G(name_suffix)) { class_len = spprintf(&class, 0, "%s%s%s", controller, YAF_G(name_separator), "Controller"); } else { class_len = spprintf(&class, 0, "%s%s%s", "Controller", YAF_G(name_separator), controller); } //转小写 class_lowercase = zend_str_tolower_dup(class, class_len); //是否存在这个Controller类 if (zend_hash_find(EG(class_table), class_lowercase, class_len + 1, (void **)&ce) != SUCCESS) { //加载这个Controller类 if (!yaf_internal_autoload(controller, len, &directory TSRMLS_CC)) { yaf_trigger_error(YAF_ERR_NOTFOUND_CONTROLLER TSRMLS_CC, "Failed opening controller script %s: %s", directory, strerror(errno)); efree(class); efree(class_lowercase); efree(directory); return NULL; //获取这个Controller类指针 } else if (zend_hash_find(EG(class_table), class_lowercase, class_len + 1, (void **) &ce) != SUCCESS) { yaf_trigger_error(YAF_ERR_AUTOLOAD_FAILED TSRMLS_CC, "Could not find class %s in controller script %s", class, directory); efree(class); efree(class_lowercase); efree(directory); return 0; //判断是否继承 Yaf_Controller_Abstract } else if (!instanceof_function(*ce, yaf_controller_ce TSRMLS_CC)) { yaf_trigger_error(YAF_ERR_TYPE_ERROR TSRMLS_CC, "Controller must be an instance of %s", yaf_controller_ce->name); efree(class); efree(class_lowercase); efree(directory); return 0; } } efree(class); efree(class_lowercase); efree(directory); return *ce; } return NULL; }
yaf_dispatcher_get_action() 获取 action 类
zend_class_entry * yaf_dispatcher_get_action(char *app_dir, yaf_controller_t *controller, char *module, int def_module, char *action, int len TSRMLS_DC) { zval **ppaction, *actions_map; //获取actions数组 actions_map = zend_read_property(Z_OBJCE_P(controller), controller, ZEND_STRL(YAF_CONTROLLER_PROPERTY_NAME_ACTIONS), 1 TSRMLS_CC); if (IS_ARRAY == Z_TYPE_P(actions_map)) { zend_class_entry **ce; uint class_len; char *class_name, *class_lowercase; char *action_upper = estrndup(action, len); //将action名字首字母转为大写 *(action_upper) = toupper(*action_upper); //前后缀模式 //Index_Action 或 Action_Index //IndexAction 或 ActionIndex if (YAF_G(name_suffix)) { class_len = spprintf(&class_name, 0, "%s%s%s", action_upper, YAF_G(name_separator), "Action"); } else { class_len = spprintf(&class_name, 0, "%s%s%s", "Action", YAF_G(name_separator), action_upper); } //类名转换为小写 class_lowercase = zend_str_tolower_dup(class_name, class_len); //是否存在这个Action类 if (zend_hash_find(EG(class_table), class_lowercase, class_len + 1, (void **) &ce) == SUCCESS) { efree(action_upper); efree(class_lowercase); //是否继承Yaf_Action_Abstract if (instanceof_function(*ce, yaf_action_ce TSRMLS_CC)) { efree(class_name); return *ce; } else { yaf_trigger_error(YAF_ERR_TYPE_ERROR TSRMLS_CC, "Action %s must extends from %s", class_name, yaf_action_ce->name); efree(class_name); return NULL; } } //在数组中找到对应的key(action名称) if (zend_hash_find(Z_ARRVAL_P(actions_map), action, len + 1, (void **)&ppaction) == SUCCESS) { char *action_path; uint action_path_len; //把值(后面的文件路径)赋给action_path //也就是得到了action类所在的文件了 action_path_len = spprintf(&action_path, 0, "%s%c%s", app_dir, DEFAULT_SLASH, Z_STRVAL_PP(ppaction)); //导入这个类文件 if (yaf_loader_import(action_path, action_path_len, 0 TSRMLS_CC)) { //action类是否存在 if (zend_hash_find(EG(class_table), class_lowercase, class_len + 1, (void **) &ce) == SUCCESS) { efree(action_path); efree(action_upper); efree(class_lowercase); //是否继承Yaf_Action_Abstract if (instanceof_function(*ce, yaf_action_ce TSRMLS_CC)) { efree(class_name); //返回Action类指针 return *ce; } else { yaf_trigger_error(YAF_ERR_TYPE_ERROR TSRMLS_CC, "Action %s must extends from %s", class_name, yaf_action_ce->name); efree(class_name); } } else { yaf_trigger_error(YAF_ERR_NOTFOUND_ACTION TSRMLS_CC, "Could not find action %s in %s", class_name, action_path); } efree(action_path); efree(action_upper); efree(class_name); efree(class_lowercase); } else { yaf_trigger_error(YAF_ERR_NOTFOUND_ACTION TSRMLS_CC, "Failed opening action script %s: %s", action_path, strerror(errno)); efree(action_path); } } else { yaf_trigger_error(YAF_ERR_NOTFOUND_ACTION TSRMLS_CC, "There is no method %s%s in %s::$%s", action, "Action", Z_OBJCE_P(controller)->name, YAF_CONTROLLER_PROPERTY_NAME_ACTIONS); } } else if (YAF_G(st_compatible)) { //省略..... //这部分不说了,大概就是在 actions 里面没有找到这个action的路径 //那么就尝试自己拼接路径去加载 if (def_module) { spprintf(&directory, 0, "%s%c%s", app_dir, DEFAULT_SLASH, "actions"); } else { spprintf(&directory, 0, "%s%c%s%c%s%c%s", app_dir, DEFAULT_SLASH, "modules", DEFAULT_SLASH, module, DEFAULT_SLASH, "actions"); } //省略..... } }
上面也看到action的路径是按照你所填写的映射中地址加载,但是类名却是action的名称拼接的,所以虽然类文件不需要按照Yaf的标准路径设定,但是类名必须和action一致,在这个环节可能会因为action的特殊性出现找不到类的问题.
Yaf 自动加载
在实例化 application 类的时候,内部会自动实例化一个 Yaf_Loader 对象,同时往内核注册了一个自动加载器 autoload 这里注册自动加载器也是用内核提供的 spl_autoload_register
yaf_loader_register() 注册自动加载器
int yaf_loader_register(yaf_loader_t *loader TSRMLS_DC) { zval *autoload, *method, *function, *ret = NULL; zval **params[1] = {&autoload}; //设置autoload为一个数组 MAKE_STD_ZVAL(autoload); array_init(autoload); #define YAF_AUTOLOAD_FUNC_NAME "autoload" #define YAF_SPL_AUTOLOAD_REGISTER_NAME "spl_autoload_register" //设置method = autoload MAKE_STD_ZVAL(method); ZVAL_STRING(method, YAF_AUTOLOAD_FUNC_NAME, 1); //把loader对象添加到autoload数组里面 zend_hash_next_index_insert(Z_ARRVAL_P(autoload), &loader, sizeof(yaf_loader_t *), NULL); //把method添加到autoload数组里面 zend_hash_next_index_insert(Z_ARRVAL_P(autoload), &method, sizeof(zval *), NULL); //设置function = spl_autoload_register MAKE_STD_ZVAL(function); ZVAL_STRING(function, YAF_SPL_AUTOLOAD_REGISTER_NAME, 0); //这里注册自动加载器跟php中调用spl_autoload_register形式几乎差不多 //spl_autoload_register(array(loader,autoload)) do { zend_fcall_info fci = { sizeof(fci), EG(function_table), function, NULL, &ret, 1, (zval ***)params, NULL, 1 }; // 调用 spl_autoload_register 注册 if (zend_call_function(&fci, NULL TSRMLS_CC) == FAILURE) { if (ret) { zval_ptr_dtor(&ret); } efree(function); zval_ptr_dtor(&autoload); php_error_docref(NULL TSRMLS_CC, E_WARNING, "Unable to register autoload function %s", YAF_AUTOLOAD_FUNC_NAME); return 0; } if (ret) { zval_ptr_dtor(&ret); } efree(function); zval_ptr_dtor(&autoload); } while (0); return 1; }
PHP_METHOD(yaf_loader, autoload) 自动加载器
PHP_METHOD(yaf_loader, autoload) { char *class_name, *origin_classname, *app_directory, *directory = NULL, *file_name = NULL; #ifdef YAF_HAVE_NAMESPACE char *origin_lcname = NULL; #endif uint separator_len, class_name_len, file_name_len = 0; //获取类名 if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s", &class_name, &class_name_len) == FAILURE) { return; } //分隔符长度 separator_len = YAF_G(name_separator_len); //根目录 app_directory = YAF_G(directory); origin_classname = class_name; do { if (!class_name_len) { break; } //命名空间处理方式 #ifdef YAF_HAVE_NAMESPACE { int pos = 0; origin_lcname = estrndup(class_name, class_name_len); class_name = origin_lcname; while (pos < class_name_len) { if (*(class_name + pos) == '\\') { *(class_name + pos) = '_'; } pos += 1; } } #endif #define YAF_LOADER_RESERVERD "Yaf_" //不允许类名Yaf打头 if (strncmp(class_name, YAF_LOADER_RESERVERD, YAF_LOADER_LEN_RESERVERD) == 0) { php_error_docref(NULL TSRMLS_CC, E_WARNING, "You should not use '%s' as class name prefix", YAF_LOADER_RESERVERD); } #define YAF_LOADER_MODEL "Model" //是否属于Model类 if (yaf_loader_is_category(class_name, class_name_len, YAF_LOADER_MODEL, YAF_LOADER_LEN_MODEL TSRMLS_CC)) { #define YAF_MODEL_DIRECTORY_NAME "models" //获取类文件的路径 //app_directory/models spprintf(&directory, 0, "%s/%s", app_directory, YAF_MODEL_DIRECTORY_NAME); //获取文件名字的长度,减去分隔符和后缀Index_Model file_name_len = class_name_len - separator_len - YAF_LOADER_LEN_MODEL; //是否配置后缀式 if (YAF_G(name_suffix)) { //获取文件名字 file_name = estrndup(class_name, file_name_len); } else { //获取文件名字 file_name = estrdup(class_name + YAF_LOADER_LEN_MODEL + separator_len); } break; } #define YAF_LOADER_PLUGIN "Plugin" //是否属于plugin类,流程跟上面一样 if (yaf_loader_is_category(class_name, class_name_len, YAF_LOADER_PLUGIN, YAF_LOADER_LEN_PLUGIN TSRMLS_CC)) { //获取类文件的路径 //app_directory/plugins spprintf(&directory, 0, "%s/%s", app_directory, YAF_PLUGIN_DIRECTORY_NAME); file_name_len = class_name_len - separator_len - YAF_LOADER_LEN_PLUGIN; if (YAF_G(name_suffix)) { file_name = estrndup(class_name, file_name_len); } else { file_name = estrdup(class_name + YAF_LOADER_LEN_PLUGIN + separator_len); } break; } #define YAF_LOADER_CONTROLLER "Controller" //是否属于Controller类,流程跟上面一样 if (yaf_loader_is_category(class_name, class_name_len, YAF_LOADER_CONTROLLER, YAF_LOADER_LEN_CONTROLLER TSRMLS_CC)) { //获取类文件的路径 //app_directory/controllers //可以看到这里只能获取Controllers目录下的控制器 //不能获取models/model/controllers/这种形式 spprintf(&directory, 0, "%s/%s", app_directory, YAF_CONTROLLER_DIRECTORY_NAME); file_name_len = class_name_len - separator_len - YAF_LOADER_LEN_CONTROLLER; if (YAF_G(name_suffix)) { file_name = estrndup(class_name, file_name_len); } else { file_name = estrdup(class_name + YAF_LOADER_LEN_CONTROLLER + separator_len); } break; } /* {{{ This only effects internally */ if (YAF_G(st_compatible) && (strncmp(class_name, YAF_LOADER_DAO, YAF_LOADER_LEN_DAO) == 0 || strncmp(class_name, YAF_LOADER_SERVICE, YAF_LOADER_LEN_SERVICE) == 0)) { /* this is a model class */ spprintf(&directory, 0, "%s/%s", app_directory, YAF_MODEL_DIRECTORY_NAME); } /* }}} */ file_name_len = class_name_len; file_name = class_name; } while(0); if (!app_directory && directory) { efree(directory); #ifdef YAF_HAVE_NAMESPACE if (origin_lcname) { efree(origin_lcname); } #endif if (file_name != class_name) { efree(file_name); } php_error_docref(NULL TSRMLS_CC, E_WARNING, "Couldn't load a framework MVC class without an %s initializing", yaf_application_ce->name); RETURN_FALSE; } if (!YAF_G(use_spl_autoload)) { //加载这个类 if (yaf_internal_autoload(file_name, file_name_len, &directory TSRMLS_CC)) { //把类名转成小写 char *lc_classname = zend_str_tolower_dup(origin_classname, class_name_len); //是否存在这个类,如果存在则代表加载成功 if (zend_hash_exists(EG(class_table), lc_classname, class_name_len + 1)) { #ifdef YAF_HAVE_NAMESPACE if (origin_lcname) { efree(origin_lcname); } #endif if (directory) { efree(directory); } if (file_name != class_name) { efree(file_name); } efree(lc_classname); //返回成功 RETURN_TRUE; } else { efree(lc_classname); php_error_docref(NULL TSRMLS_CC, E_STRICT, "Could not find class %s in %s", class_name, directory); } } else { php_error_docref(NULL TSRMLS_CC, E_WARNING, "Failed opening script %s: %s", directory, strerror(errno)); } #ifdef YAF_HAVE_NAMESPACE if (origin_lcname) { efree(origin_lcname); } #endif if (directory) { efree(directory); } if (file_name != class_name) { efree(file_name); } RETURN_TRUE; } else { //跟上面流程差不多 char *lower_case_name = zend_str_tolower_dup(origin_classname, class_name_len); if (yaf_internal_autoload(file_name, file_name_len, &directory TSRMLS_CC) && zend_hash_exists(EG(class_table), lower_case_name, class_name_len + 1)) { #ifdef YAF_HAVE_NAMESPACE if (origin_lcname) { efree(origin_lcname); } #endif if (directory) { efree(directory); } if (file_name != class_name) { efree(file_name); } efree(lower_case_name); RETURN_TRUE; } #ifdef YAF_HAVE_NAMESPACE if (origin_lcname) { efree(origin_lcname); } #endif if (directory) { efree(directory); } if (file_name != class_name) { efree(file_name); } efree(lower_case_name); RETURN_FALSE; } }
yaf_internal_autoload() 加载类文件
int yaf_internal_autoload(char *file_name, uint name_len, char **directory TSRMLS_DC) { zval *library_dir, *global_dir; char *q, *p, *seg; uint seg_len, directory_len, status; char *ext = YAF_G(ext); smart_str buf = {0}; //判断传递的路径是否为空 //如果为空则代表要加载的类文件不属于yaf框架规定的目录 //有可能是公共库文件目录 if (NULL == *directory) { char *library_path; uint library_path_len; yaf_loader_t *loader; loader = yaf_loader_instance(NULL, NULL, NULL TSRMLS_CC); if (!loader) { /* since only call from userspace can cause loader is NULL, exception throw will works well */ php_error_docref(NULL TSRMLS_CC, E_WARNING, "%s need to be initialize first", yaf_loader_ce->name); return 0; } else { //获取本地类库地址 library_dir = zend_read_property(yaf_loader_ce, loader, ZEND_STRL(YAF_LOADER_PROPERTY_NAME_LIBRARY), 1 TSRMLS_CC); //获取全局类库地址 global_dir = zend_read_property(yaf_loader_ce, loader, ZEND_STRL(YAF_LOADER_PROPERTY_NAME_GLOBAL_LIB), 1 TSRMLS_CC); //判断类名前缀是否已经注册过,如果已经注册过则在本地类库去找 //就是调用 Yaf_Loader::registerLocalNamespace() 注册 //如果不注册的话全部去公共类库下寻找 if (yaf_loader_is_local_namespace(loader, file_name, name_len TSRMLS_CC)) { library_path = Z_STRVAL_P(library_dir); library_path_len = Z_STRLEN_P(library_dir); } else { library_path = Z_STRVAL_P(global_dir); library_path_len = Z_STRLEN_P(global_dir); } } if (NULL == library_path) { php_error_docref(NULL TSRMLS_CC, E_WARNING, "%s requires %s(which set the library_directory) to be initialized first", yaf_loader_ce->name, yaf_application_ce->name); return 0; } smart_str_appendl(&buf, library_path, library_path_len); } else { smart_str_appendl(&buf, *directory, strlen(*directory)); efree(*directory); } directory_len = buf.len; /* aussume all the path is not end in slash */ smart_str_appendc(&buf, DEFAULT_SLASH); //如果这个文件名或者类名是这种形式的Service_Http_Post //下面这段代码就会把这个类名切分成路径 //directory/Service/Http/Post.php 这样 p = file_name; q = p; while (1) { while(++q && *q != '_' && *q != '\0'); if (*q != '\0') { seg_len = q - p; seg = estrndup(p, seg_len); smart_str_appendl(&buf, seg, seg_len); efree(seg); smart_str_appendc(&buf, DEFAULT_SLASH); p = q + 1; } else { break; } } if (YAF_G(lowcase_path)) { /* all path of library is lowercase */ zend_str_tolower(buf.c + directory_len, buf.len - directory_len); } smart_str_appendl(&buf, p, strlen(p)); smart_str_appendc(&buf, '.'); smart_str_appendl(&buf, ext, strlen(ext)); smart_str_0(&buf); if (directory) { *(directory) = estrndup(buf.c, buf.len); } //这里最后把类文件导入并调用内核接口进行编译 status = yaf_loader_import(buf.c, buf.len, 0 TSRMLS_CC); smart_str_free(&buf); if (!status) return 0; return 1; }
结束
上面介绍的大致就是 Yaf 框架一个运行流程,并且把框架的主要代码都分析了一遍,可以以此作为引导,在阅读分析源码的时候可以边看源码边对照 Yaf 框架官方文档 或者在用Yaf框架搭建一个环境,运行下,在对照源码分析即可。
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