Ejemplo n.º 1
0
// Unsubscribe removes a feed from the user's feed list.
func unsubscribe(c appengine.Context, feedKey *datastore.Key) error {
	var f FeedInfo
	err := datastore.RunInTransaction(c, func(c appengine.Context) error {
		u, err := getUser(c)
		if err != nil {
			return err
		}

		i := 0
		var k *datastore.Key
		for i, k = range u.Feeds {
			if feedKey.Equal(k) {
				break
			}
		}
		if i >= len(u.Feeds) {
			return nil
		}

		err = fixMissingFieldError(datastore.Get(c, feedKey, &f))
		if err != nil {
			return err
		}

		f.Refs--
		if f.Refs <= 0 {
			if err := f.rmArticles(c); err != nil {
				return err
			}
			if err := datastore.Delete(c, feedKey); err != nil {
				return err
			}

			memcache.Delete(c, articlesMcacheKey(feedKey))

		} else if _, err := datastore.Put(c, feedKey, &f); err != nil {
			return err
		}

		u.Feeds = append(u.Feeds[:i], u.Feeds[i+1:]...)
		return putUser(c, &u)
	}, &datastore.TransactionOptions{XG: true})
	if err != nil {
		return err
	}

	flushUserPageCache(c)

	if f.Refs <= 0 {
		memcache.Delete(c, mcacheFeedsKey)
		memcache.Delete(c, feedKey.StringID())
		return nil
	}

	return memcache.Gob.Set(c, &memcache.Item{Key: feedKey.StringID(), Object: f})
}
Ejemplo n.º 2
0
// Unsubscribe removes a feed from the user's feed list.
func unsubscribe(c appengine.Context, feedKey *datastore.Key) error {
	return datastore.RunInTransaction(c, func(c appengine.Context) error {
		u, err := getUserInfo(c)
		if err != nil {
			return err
		}

		i := 0
		var k *datastore.Key
		for i, k = range u.Feeds {
			if feedKey.Equal(k) {
				break
			}
		}
		if i >= len(u.Feeds) {
			return nil
		}

		var f FeedInfo
		if err := datastore.Get(c, feedKey, &f); err != nil {
			return err
		}

		f.Refs--
		if f.Refs <= 0 {
			if err := f.rmArticles(c); err != nil {
				return err
			}
			if err := datastore.Delete(c, feedKey); err != nil {
				return err
			}
		} else if _, err := datastore.Put(c, feedKey, &f); err != nil {
			return err
		}

		u.Feeds = append(u.Feeds[:i], u.Feeds[i+1:]...)
		_, err = datastore.Put(c, userInfoKey(c), &u)
		return err
	}, &datastore.TransactionOptions{XG: true})
}
func (cd ContextDefinition) IsUserOwner(userKey *datastore.Key) bool {
	return userKey.Equal(cd.Owner)
}