bridgy-fed/render.py

53 wiersze
1.6 KiB
Python
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# coding=utf-8
"""Renders mf2 proxy pages based on stored Responses."""
import datetime
import json
import appengine_config
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from granary import as2, atom, microformats2
from oauth_dropins.webutil.handlers import memcache_response, ModernHandler
from oauth_dropins.webutil import util
import webapp2
from models import Response
CACHE_TIME = datetime.timedelta(minutes=15)
class RenderHandler(ModernHandler):
"""Fetches a stored Response and renders it as HTML."""
@memcache_response(CACHE_TIME)
def get(self):
source = util.get_required_param(self, 'source')
target = util.get_required_param(self, 'target')
id = '%s %s' % (source, target)
resp = Response.get_by_id(id)
if not resp:
self.abort(404, 'No stored response for %s' % id)
if resp.source_mf2:
as1 = microformats2.json_to_object(json.loads(resp.source_mf2))
elif resp.source_as2:
as1 = as2.to_as1(json.loads(resp.source_as2))
elif resp.source_atom:
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as1 = atom.atom_to_activity(resp.source_atom)
else:
self.abort(404, 'Stored response for %s has no data' % id)
# add HTML meta redirect to source page. should trigger for end users in
# browsers but not for webmention receivers (hopefully).
html = microformats2.activities_to_html([as1])
utf8 = '<meta charset="utf-8">'
refresh = '<meta http-equiv="refresh" content="0;url=%s">' % source
html = html.replace(utf8, utf8 + '\n' + refresh)
self.response.write(html)
app = webapp2.WSGIApplication([
('/render', RenderHandler),
], debug=appengine_config.DEBUG)