manage private group membership
membership tools for private groups
Slack channels are great, anyone who is a member of your team can join or leave a channel as they want. Slack also supports private groups (aka private channels) which are invite-only. These private groups are invisible to anyone who is not a member of the group, and are appropriate for subsets of the team who need to work on particular projects.
Unfortunately, there’s nothing in-between team-wide public channels and single private groups.
For example, you may have a subset of the team, such as “finance” who may want to be able to leave or join any of a number of private groups relating to finance. However, unless they’ve been manually invited to all of the private “finance” groups, and added to any new finance groups that may be created in the future, there is a chance they can be kept in the dark about the activites of their own team.
One way to solve this would be to create a finance-only Slack team for just the finance department. Another way, while definitely not perfect, is to use a custom integration to create “private-group-clusters.”
For example, one can add all the members of the finance department to a private group, such as “finance-department” and they may join any other private group matching a regular expression or expressions (e.g. “finance-.*” and “sales-forecast”).
Be familiar with Apache, CGI programs, Python, and JSON, and creating Slack integrations before attempting this.
pip3 install slack-groupmgr
will create three new commands, groupmgr, groupmgr-cgi, and groupmgr-flask. They are, in turn, the commandline, CGI, and a standalone Flask/WSGI debugging server.
In production, we strongly reccomand using the WSGI version of group manager, and running it under Apache or ngnix or gunicorn or one of the many WSGI capable webservers out there.
The CGI version is legacy and might be abandoned in the future.
Create a “Group Manager” account, it does not need special privileges, but it must have access to the Web API. At this time it cannot be a “bot” account, it must be a regular account to use the API’s group invite mechanism.
Invite this “Group Manager” account to all of the private groups you want it to manage. Slack users, even team owners, do not have any visibility into groups that they are not a member of, and “Group Manager” is no different.
Acquire a WEB API token for the Group Manager account. https://api.slack.com/docs/oauth-test-tokens
Create a custom slash command integration for your copy of Group Manager with the following parameters:
- Command: /groupmgr (or whatever you want to call it)
- URL: point to your server hosting groupmgr
- Method: POST
- Token: (generated by Slack, record this, you’ll need it below (SLASH-TOKEN)
- Customize Name: “Group Manager”
- Customize Icon: (your choice)
- Autocomplete Description: Add yourself to semi-private groups
- Autocomplete Help: Use ‘list’, ‘add’, and ‘help’ for more info
Configure your webserver to execute the groupmgr python script as CGI at the URL you chose above.
Note: Python 3 has some issues with Unicode encoding if the LANG environment variable is not set properly before the interepreter executes code. Make sure that LANG is set to a utf-8 encoding such as C.utf-8 or EN_us.utf-8.
Finally, configure the script itself, look at examples/config.json
The script, by default, will look for config.json in $HOME/.config/groupmgr/config.json
- default-team is only used when using the command line
- team_id is the Slack ID (starts with T0…..) of your team
- api_token is the Slack Web API token that groupmgr will use to control Slack
- inbound_tokens are a list of valid SLASH-TOKENs from the slash commands
- administrators are the names of users who can use groupmgr admin commands
Finally, configure your groups, the dictionary is indexed by a master group followed by a list of regular expressions. See the example file for the format.
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