class Router(object):
# ---- 描述符: 延迟实例化。------------------------ #
class InstanceDescriptor(object):
def __get__(self, instance, owner):
v = getattr(owner, "__instance__", None)
if not v:
v = owner() # 构造参数!
owner.__instance__ = v
return v
# ----------------------------------------------- #
def __init__(self):
self._handlers = {} # {url:(handler, methods)}
self._selector = Selector()
self._cache = {}
self.load()
handlers = property(lambda self: self._handlers)
instance = InstanceDescriptor()
def load(self):
# 通过检查 urls 标记，载入所有 handler。
def add(handler):
for url, methods in getattr(handler, TAG_URLS).iteritems():
self._selector.add(url, methods, handler)
self._handlers[url] = (handler, methods)
walk_members(Action, lambda m: hasattr(m, TAG_URLS), add)
def reset(self):
# 重置(清空) Handlers 配置。
self._selector.reset()
return self
def match(self, environ):
# 从缓存中查找固定 URL 匹配。
key = "{0}|{1}".format(environ["REQUEST_METHOD"], environ["PATH_INFO"])
handler = self._cache.get(key, None)
if handler:
return handler, {}
handler, kwargs = self._selector.match(environ)
# 如果 URL 固定，没有分解参数，缓存。
if not kwargs and key not in self._cache:
self._cache[key] = handler
return handler, kwargs
class Router(object):
# ---- 描述符: 延迟实例化。------------------------ #
class InstanceDescriptor(object):
def __get__(self, instance, owner):
v = getattr(owner, "__instance__", None)
if not v:
v = owner() # 构造参数!
owner.__instance__ = v
return v
# ----------------------------------------------- #
def __init__(self):
self._handlers = {} # {url:(handler, methods)}
self._selector = Selector()
self._cache = {}
self.load()
handlers = property(lambda self: self._handlers)
instance = InstanceDescriptor()
def load(self):
# 通过检查 urls 标记，载入所有 handler。
def add(handler):
for url, methods in getattr(handler, TAG_URLS).iteritems():
self._selector.add(url, methods, handler)
self._handlers[url] = (handler, methods)
walk_members(Action, lambda m: hasattr(m, TAG_URLS), add)
def reset(self):
# 重置(清空) Handlers 配置。
self._selector.reset()
return self
def match(self, environ):
# 从缓存中查找固定 URL 匹配。
key = "{0}|{1}".format(environ["REQUEST_METHOD"], environ["PATH_INFO"])
handler = self._cache.get(key, None)
if handler:
return handler, {}
handler, kwargs = self._selector.match(environ)
# 如果 URL 固定，没有分解参数，缓存。
if not kwargs and key not in self._cache:
self._cache[key] = handler
return handler, kwargs
def __init__(self):
self._handlers = {} # {url:(handler, methods)}
self._selector = Selector()
self._cache = {}
self.load()
def __init__(self):
self._handlers = {} # {url:(handler, methods)}
self._selector = Selector()
self._cache = {}
self.load()
