Squashed 'paste-framework/' content from commit 34e8684
git-subtree-dir: paste-framework git-subtree-split: 34e8684c4bc3cebbe177509f42ab4ef5b5425a7a
This commit is contained in:
zwf
Executable
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import importlib
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import pkgutil
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from types import ModuleType
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from typing import Optional, Any
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import tornado
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from tornado.routing import URLSpec
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from tornado.web import OutputTransform, _RuleList
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class Application(tornado.web.Application):
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"""
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从 Tornado 派生的应用程序类。
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"""
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@classmethod
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def modules_iterator(cls, package: [str, ModuleType]):
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"""
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从 package 包装载所有模块。这里返回模块迭代器。
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若为字符串，则直接从目录中载入模块；若为模块，则根据模块的参数装载。
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:param package: 包，允许为路径或包（模块对象）
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:return: 模块迭代器
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"""
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if isinstance(package, str):
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package = importlib.import_module(package)
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# 模块迭代器，能够遍历出所有子包中的子模块
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return pkgutil.walk_packages(package.__path__, f"{package.__name__}.")
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@classmethod
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def fetch_handlers(cls, module: ModuleType):
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"""
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查找模块中所有的请求处理类，即类 RequestHandler 的子类。
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:param module: 模块
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:return: [(路由模式, 请求处理类)]
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"""
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# 判断是否是有效的 RequestHandler 类，且是 RequestHandler 的子类
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def is_handler(handler_cls):
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return isinstance(handler_cls, type) and issubclass(handler_cls, tornado.web.RequestHandler)
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# 判断是否拥有 route_pattern 模式属性，且该属性值为字符串类型
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def has_pattern(handler_cls):
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return hasattr(handler_cls, 'route_pattern') and isinstance(getattr(handler_cls, 'route_pattern'), str)
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handlers: list[tuple[str, ModuleType]] = []
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# 迭代模块成员
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for _n in dir(module):
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_cls = getattr(module, _n)
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is_hdl = is_handler(_cls)
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has_pat = has_pattern(_cls)
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if is_hdl and has_pat:
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_route = _cls.route_pattern
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handlers.append((_route, _cls))
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return handlers
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@classmethod
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def load_ui_modules(cls, ui_modules_config):
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"""
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将JSON配置中的模块字符串转换为实际的类。
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"""
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loaded_modules = {}
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for name, path in ui_modules_config.items():
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try:
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module_path, class_name = path.rsplit('.', 1)
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module = importlib.import_module(module_path)
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loaded_modules[name] = getattr(module, class_name)
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except (ImportError, AttributeError) as e:
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raise RuntimeError(f"Failed to load UIModule {name} from {path}: {str(e)}")
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return loaded_modules
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def __init__(
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self,
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handlers: Optional[_RuleList] = None,
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handlers_pkg: [str, ModuleType] = None,
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uri_prefix: str = "",
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**settings: Any
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) -> None:
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"""
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重写应用程序构造函数，增加自动装载功能。
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:param handlers: 请求处理路由配置列表
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:param handlers_pkg: 执行自动装载的请求处理类所在包
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:param uri_prefix: URI 前缀
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:param settings: 其他配置
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"""
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self.routes: list[(URLSpec, _RuleList)] = []
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"""
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请求处理路由列表。
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"""
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if uri_prefix:
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uri_prefix = uri_prefix if uri_prefix.startswith('/') else f"/{uri_prefix}"
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self.uri_prefix = uri_prefix
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"""
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统一资源标识符前缀。仅支持动态加载的请求处理类。
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"""
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# 合并构造参数中的请求处理路由
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if handlers:
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self.routes.extend(handlers)
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# 动态加载请求处理类，并执行合并
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if handlers_pkg:
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self.routes.extend(self.load_handlers(handlers_pkg=handlers_pkg))
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self.before_create()
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super().__init__(handlers=self.routes, **settings)
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def before_create(self):
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"""
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在创建应用之前执行。
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"""
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pass
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def load_handlers(self, handlers_pkg: [str, ModuleType] = None):
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"""
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从 handlers_pkg 指定的包装载所有模块，分析出所有请求处理类和路由路径，并返回。
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:param handlers_pkg: 模块根目录，允许为路径或包（模块对象）
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:return: 动态装载的所有路由配置
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"""
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_routes = []
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if handlers_pkg is None:
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return _routes
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# 迭代器装载所有子包中的子模块
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modules_itr = self.modules_iterator(package=handlers_pkg)
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for _file_finder, _module_name, _is_package in modules_itr:
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if _is_package:
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continue
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_module = importlib.import_module(_module_name)
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_handlers = self.fetch_handlers(module=_module)
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for _hdl in _handlers:
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_pattern, _cls = str(_hdl[0]), _hdl[1]
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_pattern = _pattern if _pattern.startswith('/') else f"/{_pattern}"
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_url_spec = tornado.web.url(
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pattern=f"{self.uri_prefix}{_pattern}", handler=_cls, name=_cls.__name__
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)
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_routes.append(_url_spec)
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return _routes
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class ApplicationSwagger(Application):
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"""
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从框架 Application 派生，增加对 Swagger 的支持。
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"""
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swagger_schema = ""
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"""
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在 Swagger 注入时，保存 json schema。
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"""
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swagger_home_template = ""
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"""
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在 Swagger 注入时，保存 Ui 页面内容。
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"""
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swagger_url = "/docs"
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"""
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Swagger URL。
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"""
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swagger_api_base_url = "/"
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"""
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Swagger API base URL。
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"""
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swagger_title = ""
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"""
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Swagger 页面标题。
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"""
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swagger_description = ""
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"""
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Swagger 页面描述。
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"""
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swagger_api_version = ""
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"""
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Swagger 页面版本。
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"""
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swagger_contact = ""
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"""
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Swagger 页面联系方式。
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"""
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swagger_schemes = ["http", "https"]
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"""
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Swagger 协议方案。
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"""
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def __init__(self, **settings: Any) -> None:
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self.swagger_schema = settings.get('swagger_schema', self.swagger_schema)
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self.swagger_home_template = settings.get('swagger_home_template', self.swagger_home_template)
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self.swagger_url = settings.get('swagger_url', self.swagger_url)
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self.swagger_url = self.swagger_url if self.swagger_url.startswith('/') else f"/{self.swagger_url}"
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self.swagger_api_base_url = settings.get('swagger_api_base_url', self.swagger_api_base_url)
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self.swagger_api_base_url = self.swagger_api_base_url if self.swagger_api_base_url.startswith('/') \
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else f"/{self.swagger_api_base_url}"
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self.swagger_title = settings.get('swagger_title', self.swagger_title)
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self.swagger_description = settings.get('swagger_description', self.swagger_description)
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self.swagger_api_version = settings.get('swagger_api_version', self.swagger_api_version)
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self.swagger_contact = settings.get('swagger_contact', self.swagger_contact)
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self.swagger_schemes = settings.get('swagger_schemes', self.swagger_schemes)
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super().__init__(**settings)
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def before_create(self):
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_swagger_url = f"{self.uri_prefix}{self.swagger_url}"
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_swagger_api_base_url = f"{self.uri_prefix}{self.swagger_api_base_url}"
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from paste.web.swagger import setup_swagger
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setup_swagger(
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app=self,
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routes=self.routes,
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swagger_url=_swagger_url,
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api_base_url=_swagger_api_base_url,
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title=self.swagger_title,
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description=self.swagger_description,
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api_version=self.swagger_api_version,
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contact=self.swagger_contact,
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schemes=self.swagger_schemes,
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)
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