Vulcan Status Report

[dtm2451]

Adds a Connection Status Check on visit, with display in the Nav Bar.

This API includes 3 elements:

1. a real check of if there is an active c4 conenction
2. sourced from the app config, a call of whether downage might be 'expected' or not at this time
3. sourced from the app config, a message for describing current or future maintenance windows

The UI in the NavBar then uses the MUI Alert component where icon&color can be easily adjusted based on the current situation. Scroll is used to keep this element constrained within our standard NavBAr height our standard messaging system.

Config Elements:
Within the ':ssh' set where the c4 connection setup is established

:ssh:
    :downage_expected: false #true
    :downage_message: 'Our compute cluster will be down for maintenance starting on 7/21, potentially lasting until 7/25'

A bit of work left:

• Rather than true/false for the :downage_expected element, using dates to mark the start/end of the maintenance window could reduce the need to adjust this element manually at the start and end of known maintenance.
• Styling adjustments?
• Tests for the check_connection endpoint and the cluster_status API

Outdated examples:

see comment below for current versions!
Known Maintenance Coming:

Connection Failure that's expected:

Failure that's NOT expected:

[amadeovezz]

backend code looks good to me! although the code is super simple - its probably worth just adding one quick spec. Happy to help here!

[dtm2451]

backend code looks good to me! although the code is super simple - its probably worth just adding one quick spec. Happy to help here!

I welcome your help on the ruby spec! I've made my last push here for the day at this point.

[dtm2451]

Updated the UI to just make use of our normal messaging system in all cases:

Known Maintenance Coming:

Connection Failure that's expected:

Failure that's NOT expected: