造个小轮子，通过 proxy 方式自动在网页中静态资源后面加上时间戳，强制刷新静态资源

[sujin190]

	# -*- coding: utf-8 -*-
	# 14/12/16
	# create by: snower
	import sys
	import time
	import re
	import logging
	import traceback
	from tornado.ioloop import IOLoop
	from tornado.httpserver import HTTPServer
	from tornado.web import Application, RequestHandler
	from tornado.httpclient import HTTPError
	from tornado import gen
	from tornado.httpclient import AsyncHTTPClient, HTTPRequest
	application = None
	server = None
	ioloop = None
	PORT = sys.argv[1]
	PROXY_PASS = sys.argv[2]
	def request(method):
	@gen.coroutine
	def _(self, *args, **kwargs):
	try:
	yield method(self, *args, **kwargs)
	except Exception as e:
	self.set_status(200)
	tb = traceback.format_exc()
	tb = "".join(["<p>%s</p>\n" % _tb for _tb in tb.split("\n")])
	self.finish(u'''
	<meta charset="utf-8" />
	<meta name="viewport" content="width=device-width,initial-scale=1,maximum-scale=1,minimum-scale=1,user-scalable=no" />
	<div>proxy error: %s</div>\n<div>%s</div>'''
	% (e, tb))
	return _
	class ProxyRequestHandler(RequestHandler):
	rs = (
	re.compile(r'[\'"](.+?\/.+?\.html.*?)[\'"]'),
	re.compile(r'[\'"](.+?\/.+?\.js.*?)[\'"]'),
	re.compile(r'[\'"](.+?\/.+?\.css.*?)[\'"]'),
	re.compile(r'[\'"](.+?\/.+?\.(png|jpeg|jpg|gif|webp).*?)[\'"]'),
	)
	def check_etag_header(self):
	return False
	def set_etag_header(self):
	return
	@request
	@gen.coroutine
	def head(self, url):
	response = yield self.fetch(url, 'head')
	yield self.write_response(response)
	@request
	@gen.coroutine
	def get(self, url):
	response = yield self.fetch(url, 'get')
	if not response.error:
	body = self.rtpath(response.body)
	else:
	body = None
	yield self.write_response(response, body)
	@request
	@gen.coroutine
	def post(self, url):
	response = yield self.fetch(url, 'post')
	yield self.write_response(response)
	@request
	@gen.coroutine
	def delete(self, url):
	response = yield self.fetch(url, 'delete')
	yield self.write_response(response)
	@request
	@gen.coroutine
	def patch(self, url):
	response = yield self.fetch(url, 'patch')
	yield self.write_response(response)
	@request
	@gen.coroutine
	def put(self, url):
	response = yield self.fetch(url, 'put')
	yield self.write_response(response)
	@request
	@gen.coroutine
	def options(self, url):
	response = yield self.fetch(url, 'options')
	yield self.write_response(response)
	@gen.coroutine
	def fetch(self, url, method):
	client = AsyncHTTPClient()
	request = HTTPRequest(PROXY_PASS + self.request.uri, method.upper(), self.request.headers, self.request.body or None, connect_timeout=5, request_timeout=5, follow_redirects=False, max_redirects=0)
	try:
	response = yield client.fetch(request)
	except HTTPError as e:
	response = e.response
	raise gen.Return(response)
	@gen.coroutine
	def write_response(self, response, body=None):
	self.set_status(response.code, response.reason)
	for key, value in response.headers.iteritems():
	if key != 'Content-Length':
	self.set_header(key, value)
	self.finish(response.body or None if body is None else body)
	def rtpath(self, body):
	for r in self.rs:
	urls = re.findall(r, body)
	for url in urls:
	if isinstance(url, tuple):
	url = url[0]
	rurl = url+"&ts="+str(int(time.time())) if "?" in url else url+"?ts="+str(int(time.time()))
	body = re.sub(url, rurl, body)
	return body
	urls = (
	(r'^(.*)$',ProxyRequestHandler),
	)
	def start():
	global application, server, ioloop
	application = Application(urls, debug=False, autoreload=False)
	server = HTTPServer(application, xheaders=True)
	server.bind(PORT)
	server.start()
	ioloop = IOLoop.instance()
	ioloop.start()
	def stop():
	global application, server, ioloop
	def _():
	application.stop()
	server.stop()
	def stop_loop():
	now = time.time()
	if ioloop._callbacks or ioloop._timeouts:
	ioloop.add_timeout(now + 0.5, stop_loop)
	else:
	ioloop.stop()
	stop_loop()
	ioloop.add_callback_from_signal(_)
	if __name__ == "__main__":
	logging.basicConfig(level=logging.INFO, format="%(asctime)s %(process)d %(levelname)s %(message)s")
	start()

view raw rproxy.py hosted with ❤ by GitHub

[jones]

并发量上来性能堪忧啊，所有的响应内容都去扫一遍html响应内容查找一遍静态资源后缀，python的正则和字符串运算现在性能真的牛叉到可以忽略并发任性使用了？静态资源版本号还是前端构建工具发布的时候添加上比较好

[sujin190]

@jones 这个只是用于调试的时候了，比如微信调试的时候就比较坑，没办法发刷缓存，每次改了都不生效，又没办法在pc上调试，真的到了线上，当然还是使用构建工具了