A EPOLL event driven web server, it's not enough completed for production, just for study.
import argparse
from webserver import *
class IndexHandler(RequestHandler):
def get(self):
self.write('<h1>Hello, world!</h1>')
def main(unix_sock, bind, port):
application = Application([
('/', IndexHandler)
])
http_server = TCPServer(application, unix_sock, bind, port)
http_server.start()
if __name__ == "__main__":
parser = argparse.ArgumentParser()
parser.add_argument('--unix_sock', default=None,
help='Run as unix socket')
parser.add_argument('--bind', '-b', default='',
help='Specify alternate bind address ')
parser.add_argument('--port', '-p', default=8080,
help='Specify alternate port [default: 8080]')
args = parser.parse_args()
main(unix_sock=args.unix_sock, bind=args.bind, port=args.port)$: python3 app.py -p 8888
OR
$: python3 app.py --unix_sock /tmp/test.sock
实例化Application加载handler，并传入TCPServer
application = Application([
('/', IndexHandler)
])
http_server = TCPServer(application, unix_sock, bind, port)处理请求时会在Application的_get_host_handlers方法里匹配handler
def _get_host_handlers(self, request):
"""match the handler."""
if request.uri:
uri = request.uri.lower().rstrip('/')
else:
return None
if uri == '': uri = '/'
for pattern, handler in self.handlers:
if pattern == uri:
return handler
return NoneTCP Server接受请求后执行Application.__call__
class TCPServer(object):
...
def _handle_request(self, fileno):
...
self.responses[fileno] = self.application(self.request)
...
...
class Application(object):
...
def __call__(self, request):
handler = self._get_host_handlers(request)
...最后执行RequestHandler的工厂函数
class RequestHandler(object):
...
def _execute(self, fileno):
...
getattr(self, self.request.method.lower())()
...