Rocket.chat: Provide /api/v1/channels.setRetention method

[col-panic]

Description:

The channels api currently misses a method to update a channels retention policy. Getting the
retention policy of a channel is already part of the default channel info, as the following response shows

...
"_updatedAt":"2020-08-04T08:03:21.541Z",
"retention":{"enabled":true,"overrideGlobal":true,"maxAge":10,"excludePinned":true},
"description":"elexis-server"
...

Steps to reproduce:

1. Go to https://docs.rocket.chat/api/rest-api/methods/channels
2. Try to find a way of updating retention settings via API

Expected behavior:

A means to perform the update via API

Actual behavior:

None

Server Setup Information:

• Version of Rocket.Chat Server: 3.4.2
• Operating System: linux
• Deployment Method: docker
• Number of Running Instances:
• DB Replicaset Oplog:
• NodeJS Version:
• MongoDB Version:

Client Setup Information

• Desktop App or Browser Version:
• Operating System:

Additional context

None

Relevant logs:

None

[github-actions[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[leManu]

This functionality is needed for https://github.com/EsupPortail/esup-mod_rocketchat. We are planning to implement such functionality in the Moodle plugin (see https://github.com/EsupPortail/esup-mod_rocketchat/issues/21), but whithout a proper method in the Rocket.Chat API this would be hard.

[bseclier]

Agreed, it would be a nice feature to have in the API !