Although I'm unable to reproduce the issue, its a safe change to
prevent an AttributeError from occuring ('NoneType' object has no
attribute 'close'). The user that reported this is attempting to
launch a kernel and I believe the launch only partially completed
such that `kernel._activity_stream` did not get established.
(This occurred from Jupyter Enterprise Gateway where we deal with remote
kernel launches across resource-managed clusters, so things are a bit
more involved relative to kernel establishment.)
- Improves understanding (French contains « Sauvegarder » and « Enregistrer »,
which have different meaning, let's take advantage of that).
- Fix layout (too long sentences were breaking CSS layout in some cases)
`exporter_map` is deprecated, so let's use the list of exporters fetched
from the installed entrypoints.
There's a supposed attribute `export_from_notebook` that should be set
to a friendly string name if the exporter should be exposed in the
front-end. However, the exporters defined in `nbconvert` don't have it
set, so I haven't used it to determine inclusion in the list. Instead,
I've used the entrypoint name as the friendly name, which looks like it
was the intention from the way they are named.
I ran the unit tests and tried starting up the notebook server and
accessing the API endpoint to verify the JSON looked correct.
Per Tornado's documentation:
>By default, Tornado’s secure cookies expire after 30 days.
>To change this, use the expires_days keyword argument to
>set_secure_cookie and the max_age_days argument to get_secure_cookie.
>These two values are passed separately so that you may
>e.g. have a cookie that is valid for 30 days for most purposes,
>but for certain sensitive actions
>(such as changing billing information)
>you use a smaller max_age_days when reading the cookie.
With the current implementation in `auth/login.py`,
this is possible to pass the `expires_days` option
but not possible to enforce it as this is not possible
to pass `max_age_days` to `get_secure_cookie`
This makes impossible to set the cookie expiration without
using a custom `LoginHandler`.
This revision is about adding the possibility to pass options
to Tornado's `get_secure_cookie` method,
so it can be possible to set the cookies expiration,
among others.
