Min Pinners

[ro-tex]

PULL REQUEST

Overview

Add a cluster-wide configuration field defining the minimum number of pinners we want.
In the process of doing that, this PR also defines a DB collection for cluster-wide configuration values and a generic way for getting those.

Example for Visual Changes

Checklist

Review and complete the checklist to ensure that the PR is complete before assigned to an approver.

• All new methods or updated methods have clear docstrings
• Testing added or updated for new methods
• Verify if any changes impact the WebPortal Health Checks
• Approriate documentation updated
• Changelog file created

Issues Closed

Closes #8
Closes SKY-279

[linear]

SKY-279 Cluster-wide setting for underpinned threshold

we should make the underpinned value an environment variable so that we can increase/decrease the redundancy easily.

Originally posted by @MSevey in https://github.com/SkynetLabs/pinner/pull/2#discussion_r856472538

Proposal

As we want this to be a cluster-wide setting, we cannot use an environment variable for it because each server will have its own value and they will need to do a complicated negotiation in order to decide on a common, cluster-wide number.

That's why we should add a configuration or settings collection in Mongo and use that to store all cluster-wide settings, similar to what we do in accounts when we need to disable registrations on a given cluster.

GitHub: #8