swannotificationsservice

SwanNotificationsService

JupyterHub service that exposes an API with notifications for the logged in user. The notifications are specified in a json file. If a "maintenance file" exists, a notification will be given that the service is under maintenance.

This extension works in conjunction with SwanNotifications.

Requirements

This module requires and installs JupyterHub.

Installation

Install the package:

pip install swannotificationsservice

Update the container image

This folder contains a Dockerfile that can be used to create an image for the pod that runs the notifications service. Once you release to PyPI you need to create a new image, e.g.

docker build -t gitlab-registry.cern.ch/swan/docker-images/jupyterhub/notifications:v0.1.0 && docker push gitlab-registry.cern.ch/swan/docker-images/jupyterhub/notifications:v0.1.0

Usage

Call the binary and specify configuration parameters:

swannotificationsservice --notifications_file /srv/jupyterhub/notifications.json

Configuration parameters:

• port (default: 8888)
• notifications_file (default: /srv/jupyterhub/notifications.json)
• maintenance_file (default: /etc/nologin)
• prefix (default: /)

Notifications file example:

[
    {
        "user": "*",
        "id": "notif1",
        "level": "info",
        "dismissible": 0,
        "message": "This is a notification"
    }
]

Explanation:

• user: username or '*' for all users;
• id: unique identifier;
• level: type of the notification (notice, info, success, or error)
• dismissible: wether the user will be able to permanently hide the notification (0 or 1)
• message: the text/html message