244 строки
7.7 KiB
Python
244 строки
7.7 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright 2013 Google Inc.
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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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__author__ = 'ericbidelman@chromium.org (Eric Bidelman)'
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import datetime
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import json
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import logging
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import webapp2
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# App Engine imports.
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from google.appengine.api import users
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import settings
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import models
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from django.template.loader import render_to_string
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from django.utils import feedgenerator
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import django
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# Initialize django so that it'll function when run as a standalone script.
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# https://django.readthedocs.io/en/latest/releases/1.7.html#standalone-scripts
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django.setup()
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def require_whitelisted_user(handler):
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"""Handler decorator to require the user be whitelisted."""
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def check_login(self, *args, **kwargs):
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user = users.get_current_user()
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if not user:
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return self.redirect(users.create_login_url(self.request.uri))
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elif not self._is_user_whitelisted(user):
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handle_401(self.request, self.response, Exception)
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return
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return handler(self, *args, **kwargs) # Call the handler method
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return check_login
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def strip_trailing_slash(handler):
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"""Strips the trailing slash on the URL."""
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def remove_slash(self, *args, **kwargs):
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path = args[0]
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if path[-1] == '/':
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return self.redirect(self.request.path.rstrip('/'))
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return handler(self, *args, **kwargs) # Call the handler method
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return remove_slash
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class BaseHandler(webapp2.RequestHandler):
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def __init__(self, request, response):
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self.initialize(request, response)
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# Add CORS and Chrome Frame to all responses.
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self.response.headers.add_header('Access-Control-Allow-Origin', '*')
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self.response.headers.add_header('X-UA-Compatible', 'IE=Edge,chrome=1')
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# Settings can't be global in python 2.7 env.
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logging.getLogger().setLevel(logging.DEBUG)
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class JSONHandler(BaseHandler):
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def __truncate_day_percentage(self, data):
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# Need 8 decimals b/c num will by multiplied by 100 to get a percentage and
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# we want 6 decimals.
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data.day_percentage = float("%.*f" % (8, data.day_percentage))
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return data
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def _is_googler(self, user):
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return user and user.email().endswith('@google.com')
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def _clean_data(self, data):
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user = users.get_current_user()
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# Don't show raw percentages if user is not a googler.
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if not self._is_googler(user):
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data = map(self.__truncate_day_percentage, data)
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return data
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def get(self, data, formatted=False, public=True):
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cache_type = 'public'
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if not public:
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cache_type = 'private'
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# Cache script generated json responses.
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self.response.headers['Cache-Control'] = '%s, max-age=%s' % (
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cache_type, settings.DEFAULT_CACHE_TIME)
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self.response.headers['Content-Type'] = 'application/json;charset=utf-8'
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if not formatted:
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data = [entity.to_dict() for entity in data]
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# Remove keys that the frontend doesn't render.
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for item in data:
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item.pop('rolling_percentage', None)
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item.pop('updated', None)
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item.pop('created', None)
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return self.response.write(json.dumps(data, separators=(',',':')))
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class ContentHandler(BaseHandler):
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def _is_user_whitelisted(self, user):
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if not user:
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return False
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is_whitelisted = False
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if users.is_current_user_admin():
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is_whitelisted = True
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elif user.email().endswith('@chromium.org') or user.email().endswith('@google.com'):
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is_whitelisted = True
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else:
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# TODO(ericbidelman): memcache user lookup.
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query = models.AppUser.all(keys_only=True).filter('email =', user.email())
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found_user = query.get()
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if found_user is not None:
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is_whitelisted = True
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return is_whitelisted
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def _add_common_template_values(self, d):
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"""Mixin common values for templates into d."""
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template_data = {
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'prod': settings.PROD,
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'APP_TITLE': settings.APP_TITLE,
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'current_path': self.request.path,
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'VULCANIZE': settings.VULCANIZE,
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'TEMPLATE_CACHE_TIME': settings.TEMPLATE_CACHE_TIME
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}
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user = users.get_current_user()
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if user:
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template_data['login'] = (
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'Logout', users.create_logout_url(dest_url=self.request.path))
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template_data['user'] = {
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'is_whitelisted': self._is_user_whitelisted(user),
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'is_admin': users.is_current_user_admin(),
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'email': user.email(),
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}
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else:
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template_data['user'] = None
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template_data['login'] = (
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'Login', users.create_login_url(dest_url=self.request.path))
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d.update(template_data)
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def render(self, data={}, template_path=None, status=None, message=None,
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relpath=None):
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if status is not None and status != 200:
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self.response.set_status(status, message)
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# Add common template data to every request.
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self._add_common_template_values(data)
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try:
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self.response.out.write(render_to_string(template_path, data))
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except Exception as e:
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logging.error(e)
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handle_404(self.request, self.response, e)
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def render_atom_feed(self, title, data):
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features_url = '%s://%s%s' % (self.request.scheme,
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self.request.host,
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self.request.path.replace('.xml', ''))
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feature_url_prefix = '%s://%s%s' % (self.request.scheme,
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self.request.host,
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'/feature')
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feed = feedgenerator.Atom1Feed(
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title=unicode('%s - %s' % (settings.APP_TITLE, title)),
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link=features_url,
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description=u'New features exposed to web developers',
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language=u'en'
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)
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for f in data:
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pubdate = datetime.datetime.strptime(str(f['updated'][:19]),
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'%Y-%m-%d %H:%M:%S')
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feed.add_item(
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title=unicode(f['name']),
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link='%s/%s' % (feature_url_prefix, f.get('id')),
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description=f.get('summary', ''),
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pubdate=pubdate,
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author_name=unicode(settings.APP_TITLE),
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categories=[f['category']]
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)
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self.response.headers.add_header('Content-Type',
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'application/atom+xml;charset=utf-8')
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self.response.out.write(feed.writeString('utf-8'))
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def handle_401(request, response, exception):
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ERROR_401 = (
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'<style>'
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'body { padding: 2em; }'
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'h1, h2 { font-weight: 300; font-family: "Roboto", sans-serif; }\n'
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'</style>\n'
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'<title>401 Unauthorized</title>\n'
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'<h1>Error: Unauthorized</h1>\n'
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'<h2>User does not have permission to view this page.</h2>')
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response.write(ERROR_401)
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response.set_status(401)
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def handle_404(request, response, exception):
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ERROR_404 = (
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'<style>'
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'body { padding: 2em; }'
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'h1, h2 { font-weight: 300; font-family: "Roboto", sans-serif; }\n'
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'</style>\n'
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'<title>404 Not Found</title>\n'
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'<h1>Error: Not Found</h1>\n'
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'<h2>The requested URL was not found on this server.'
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'</h2>')
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response.write(ERROR_404)
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response.set_status(404)
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def handle_500(request, response, exception):
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logging.exception(exception)
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ERROR_500 = (
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'<style>'
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'body { padding: 2em; }'
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'h1, h2 { font-weight: 300; font-family: "Roboto", sans-serif; }\n'
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'</style>\n'
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'<title>500 Internal Server Error</title>\n'
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'<h1>Error: 500 Internal Server Error</h1>')
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response.write(ERROR_500)
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response.set_status(500)
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