133 lines
5.0 KiB
Python
133 lines
5.0 KiB
Python
#
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# Copyright 2015 Laszlo Zeke
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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import webapp2
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from webapp2 import Route
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import urllib2
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import json
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import datetime
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import logging
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from feedformatter import Feed
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from google.appengine.api import memcache
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class MainPage(webapp2.RequestHandler):
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def get(self):
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self.response.headers['Content-Type'] = 'text/html'
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html_resp = """
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<html>
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<head>
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<title>Twitch stream RSS generator</title>
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</head>
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<body>
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<p style="font-family: helvetica; font-size:20pt; padding: 20px;">
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Twitch stream RSS generator
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</p>
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<p style="font-family: helvetica; font-size:12pt; padding: 20px;">
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You can get RSS of broadcasts by subscribing to https://twitchrss.appspot.com/vod/<channel name><br/>
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For example: <a href="https://twitchrss.appspot.com/vod/riotgames">https://twitchrss.appspot.com/vod/riotgames</a><br/><br/>
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Not endorsed by Twitch.tv, just a fun project.<br/>
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<a href="https://github.com/lzeke0/TwitchRSS">Project home</a>
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</p>
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</body>
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</html>
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"""
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self.response.write(html_resp)
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class RSSVoDServer(webapp2.RequestHandler):
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def get(self, channel):
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channel_json = self.lookup_cache(channel)
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if channel_json == '':
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channel_json = self.fetch_json(channel)
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if channel_json == '':
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self.abort(404)
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else:
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self.store_cache(channel, channel_json)
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decoded_json = json.loads(channel_json)
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rss_data = self.construct_rss(channel, decoded_json)
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self.response.headers['Content-Type'] = 'application/xhtml+xml'
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self.response.write(rss_data)
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@staticmethod
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def lookup_cache(channel_name):
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cached_data = memcache.get('vodcache:%s' % channel_name)
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if cached_data is not None:
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logging.debug('Cache hit for %s' % channel_name)
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return cached_data
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else:
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logging.debug('Cache miss for %s' % channel_name)
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return ''
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@staticmethod
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def store_cache(channel_name, data):
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try:
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logging.debug('Cached data for %s' % channel_name)
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memcache.set('vodcache:%s' % channel_name, data, 120)
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except:
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return
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@staticmethod
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def fetch_json(channel):
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url = 'https://api.twitch.tv/kraken/channels/%s/videos?broadcasts=true' % channel
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request = urllib2.Request(url,headers={'Accept':'application/vnd.twitchtv.v3+json'})
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try:
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result = urllib2.urlopen(request)
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logging.debug('Fetch from twitch for %s with code %s' % (channel, result.getcode()))
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return result.read()
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except urllib2.URLError, e:
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return ''
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def construct_rss(self, channel_name, vods_info):
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feed = Feed()
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# Set the feed/channel level properties
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feed.feed["title"] = "%s's Twitch video RSS" % channel_name
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feed.feed["link"] = "https://twitchrss.appspot.com/"
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feed.feed["author"] = "Twitch RSS Gen"
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feed.feed["description"] = "The RSS Feed of %s's videos on Twitch" % channel_name
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# Create an item
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try:
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if vods_info['videos'] is not None:
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for vod in vods_info['videos']:
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item = {}
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link = ""
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if vod["status"] == "recording":
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link = "http://www.twitch.tv/%s" % channel_name
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item["title"] = "%s - LIVE" % vod['title']
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else:
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link = vod['url']
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item["title"] = vod['title']
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item["link"] = link
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item["description"] = "<a href=\"%s\"><img src=\"%s\" /></a>" % (link, vod['preview'])
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d = datetime.datetime.strptime(vod['recorded_at'], '%Y-%m-%dT%H:%M:%SZ')
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item["pubDate"] = d.timetuple()
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item["guid"] = vod['_id']
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if vod["status"] == "recording": # To show a different news item when live is over
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item["guid"] += "_live"
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item["ttl"] = '10'
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feed.items.append(item)
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except KeyError:
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self.abort(404)
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return feed.format_rss2_string()
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app = webapp2.WSGIApplication([
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Route('/', MainPage),
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Route('/vod/<channel:[a-zA-Z0-9_]{4,25}>', RSSVoDServer)
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], debug=False) |