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app.py
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executable file
·155 lines (139 loc) · 5.45 KB
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#!/usr/bin/env python3
# -*- coding: utf-8 -*-
__author__ = 'Michael Liao'
'''
async web application.
'''
import logging; logging.basicConfig(level=logging.INFO)
import asyncio, os, json, time
from datetime import datetime
from aiohttp import web
from jinja2 import Environment, FileSystemLoader
from config import configs
import orm
from coroweb import add_routes, add_static
from handlers import cookie2user, COOKIE_NAME
def init_jinja2(app, **kw):
logging.info('init jinja2...')
options = dict(
autoescape = kw.get('autoescape', True),
block_start_string = kw.get('block_start_string', '{%'),
block_end_string = kw.get('block_end_string', '%}'),
variable_start_string = kw.get('variable_start_string', '{{'),
variable_end_string = kw.get('variable_end_string', '}}'),
auto_reload = kw.get('auto_reload', True)
)
path = kw.get('path', None)
if path is None:
path = os.path.join(os.path.dirname(os.path.abspath(__file__)), 'templates')
logging.info('set jinja2 template path: %s' % path)
env = Environment(loader=FileSystemLoader(path), **options)
filters = kw.get('filters', None)
if filters is not None:
for name, f in filters.items():
env.filters[name] = f
app['__templating__'] = env
@asyncio.coroutine
def logger_factory(app, handler):
@asyncio.coroutine
def logger(request):
logging.info('Request: %s %s' % (request.method, request.path))
# yield from asyncio.sleep(0.3)
return (yield from handler(request))
return logger
@asyncio.coroutine
def auth_factory(app, handler):
@asyncio.coroutine
def auth(request):
logging.info('check user: %s %s' % (request.method, request.path))
request.__user__ = None
cookie_str = request.cookies.get(COOKIE_NAME)
if cookie_str:
user = yield from cookie2user(cookie_str)
if user:
logging.info('set current user: %s' % user.email)
request.__user__ = user
if request.path.startswith('/manage/') and (request.__user__ is None or not request.__user__.admin):
return web.HTTPFound('/signin')
return (yield from handler(request))
return auth
@asyncio.coroutine
def data_factory(app, handler):
@asyncio.coroutine
def parse_data(request):
if request.method == 'POST':
if request.content_type.startswith('application/json'):
request.__data__ = yield from request.json()
logging.info('request json: %s' % str(request.__data__))
elif request.content_type.startswith('application/x-www-form-urlencoded'):
request.__data__ = yield from request.post()
logging.info('request form: %s' % str(request.__data__))
return (yield from handler(request))
return parse_data
@asyncio.coroutine
def response_factory(app, handler):
@asyncio.coroutine
def response(request):
logging.info('Response handler...')
r = yield from handler(request)
if isinstance(r, web.StreamResponse):
return r
if isinstance(r, bytes):
resp = web.Response(body=r)
resp.content_type = 'application/octet-stream'
return resp
if isinstance(r, str):
if r.startswith('redirect:'):
return web.HTTPFound(r[9:])
resp = web.Response(body=r.encode('utf-8'))
resp.content_type = 'text/html;charset=utf-8'
return resp
if isinstance(r, dict):
template = r.get('__template__')
if template is None:
resp = web.Response(body=json.dumps(r, ensure_ascii=False, default=lambda o: o.__dict__).encode('utf-8'))
resp.content_type = 'application/json;charset=utf-8'
return resp
else:
r['__user__'] = request.__user__
resp = web.Response(body=app['__templating__'].get_template(template).render(**r).encode('utf-8'))
resp.content_type = 'text/html;charset=utf-8'
return resp
if isinstance(r, int) and t >= 100 and t < 600:
return web.Response(t)
if isinstance(r, tuple) and len(r) == 2:
t, m = r
if isinstance(t, int) and t >= 100 and t < 600:
return web.Response(t, str(m))
# default:
resp = web.Response(body=str(r).encode('utf-8'))
resp.content_type = 'text/plain;charset=utf-8'
return resp
return response
def datetime_filter(t):
delta = int(time.time() - t)
if delta < 60:
return u'1分钟前'
if delta < 3600:
return u'%s分钟前' % (delta // 60)
if delta < 86400:
return u'%s小时前' % (delta // 3600)
if delta < 604800:
return u'%s天前' % (delta // 86400)
dt = datetime.fromtimestamp(t)
return u'%s年%s月%s日' % (dt.year, dt.month, dt.day)
@asyncio.coroutine
def init(loop):
yield from orm.create_pool(loop=loop, **configs.db)
app = web.Application(loop=loop, middlewares=[
logger_factory, auth_factory, response_factory
])
init_jinja2(app, filters=dict(datetime=datetime_filter))
add_routes(app, 'handlers')
add_static(app)
srv = yield from loop.create_server(app.make_handler(), '127.0.0.1', 9000)
logging.info('server started at http://127.0.0.1:9000...')
return srv
loop = asyncio.get_event_loop()
loop.run_until_complete(init(loop))
loop.run_forever()