mmdump

mmdump is a simple tool for non-admins to export data from Mattermost.

Pre-alpha software. Expect crashes, data loss, silent data corruption etc.

Rationale

It doesn't seem possible to export data from Mattermost without being an admin.

Installation

$ go install github.com/tomyl/mmdump@latest

Usage

1. Log in to the web version of Mattermost.
2. Copy the session cookie e.g. using Inspect -> Network in your brower.
3. Run

$ mmdump -endpoint https://mattermost.example.com/api/v4/ -dir mydumpdir -cookie <COOKIE>

By default posts in all channels are dumped. Add -channel <CHANNELID> to dump a single channel.

To lists channels in a dump:

$ mmdump -dir mydumpdir -channels

To lists posts for a channel:

$ mmdump -dir mydumpdir -posts <CHANNELID>

TODO

• Currently not supporting pagination when fetching channels.
• Nicer CLI interface.
• Nicer posts output e.g. show reactions.