Gitlack

🌴 Gitlack will post the message on Slack and tag related people.
Why reinvent the wheel since GitLab has built in Slack notifications?
There are few reasons:

• GitLab can't tag people in Slack
• Comments can't be sent to Slack thread
• Messages are not pretty enough (IMO)

Here comes Gitlack!
Gitlack combines the users between GitLab and Slack. Map the users by their emails and there won't be different username problem.

Quick Start

Setup Slack

Please create a Slack apps that has the permission scopes:

• chat:write:bot
• users:read
• users:read.email

Provide OAuth Access Token to Gitlack.
(Features -> OAuth & Permissions -> OAuth Tokens & Redirect URLs -> Tokens for Your Workspace)

See Building Slack apps for more information.

Setup Gitlack

docker pull chihkaiyu/gitlack:v0.0.3
docker run -d --name ${CONTAINER_NAME} \
    -p 5000:5000 \
    chihkaiyu/gitlack:v0.0.3 \
    --slack-token YOUR-SLACK-TOKEN \
    --gitlab-token YOUR-GITLAB-TOKEN

Setup GitLab

1. Head to your GitLab project and open Settings -> Integrations
2. Fill URL section with your Gitlack domain and port
3. Select the events you want to receive (see Supported Events)
4. Click Add webhook

Setup Default Channel for Project or User

Gitlack will post message on Slack according to the default channel by GitLab projects or users.
You can also add the string /gitlack: CHANNEL-NAME in description at the last line to override the default values.
Here is the priority, the top will override the bottom:

1. Setting in description, for example, merge request description or tag release notes
2. Project default channel
3. User default channel
4. #general

If you want to setup the default channel for projects or users, you can send a PUT HTTP request with default_channel in query string (no need to add a # before channel name). Read Usage for more information.

For example:

• Change default channel of user:

curl -X PUT http://localhost:5000/api/user/kai.chihkaiyu?default_channel=random

• Change default channel of project:

curl -X PUT http://localhost:5000/api/project/chihkaiyu/gitlack?default_channel=random

Installation

From Source

You may build Gitlack from source and you'll have to take a look how to configure the path of database and migration scripts in Configuration section.
Make sure you have installed Golang 1.11 and simply run:

go build -o main ./cmd
./main --slack-token YOUR-SLACK-TOKEN --gitlab-token YOUR-GITLAB-TOKEN

Docker

Gitlack has been dockerized and release to Docker Hub.
Simply run:

docker pull chihkaiyu/gitlack:v0.0.3
docker run -d --name ${CONTAINER_NAME} \
    -p 5000:5000 \
    chihkaiyu/gitlack:v0.0.3 \
    --slack-token YOUR-SLACK-TOKEN \
    --gitlab-token YOUR-GITLAB-TOKEN

Or build the Docker image by yourself:

make build
make run

Configuration

Parameters

Flag	Environment Variable	Default Value	Description
debug	DEBUG	false	enable debug mode if true
slack-schema	SLACK_SCHEMA	https	Slack API protocol
slack-domain	SLACK_DOMAIN	slack.com	Slack API domain
slack-token	SLACK_TOKEN	n/a	Slack API token
gitlab-schema	GITLAB_SCHEMA	https	GitLab API protocol
gitlab-domain	GITLAB_DOMAIN	gitlab.com	GitLab API domain
gitlab-token	GITLAB_TOKEN	n/a	GitLab API token, see official website
server-addr	SERVER_ADDR	:5000	server address and port
database-config	DATABASE_CONFIG	${WORKDIR}/db/gitlack.db	database file path
database-migrations	DATABASE_MIGRATIONS	${WORKDIR}/store/migrations	database migrations script path

Persist Data From Docker

If you run Gitlack via Docker, you have to mount your SQLite file for next-time using.
The default path is /home/gitlack/db/gitlack.db in container. Simply mount it to your host would persist your data.
For example,

docker run -d --name ${CONTAINER_NAME} \
    -p 5000:5000 \
    -v /path/to/your/gitlab.db:/home/gitlack/db/gitlack.db \
    gitlack:v0.0.3 \
    --slack-token YOUR-SLACK-TOKEN \
    --gitlab-token YOUR-GITLAB-TOKEN

Usage

Here are Gitlack's API usage.

Users

Parameters:

• email - the user's email address but drop the domain part
• channel - the channel name you'd like to update and there is no need to add # before

Get User

Get an user's current information. Drop email domain part.

GET /api/user/:email

{
    "ok": true,
    "user": {
        "default_channel": "random",
        "email": "kai.chihkaiyu",
        "gitlab_id": 1,
        "name": "Chih Kai Yu",
        "slack_id": "SLACK-ID"
    }
}

Update User

Update an user's default channel. This endpoint takes value of default_channel from query string to update the user's default channel. No need to add # before the channle name.

PUT /api/user/:email?default_channel=:channel

{
    "message": "User: kai.chihkaiyu updated",
    "ok": true
}

Synchronize Users

Synchronize users from GitLab and Slack to Gitlack's database.

POST /api/user

{
    "ok": true,
    "message": "All users are synchronized",
}

Projects

Parameters:

• namespace - the top level group of the project
• path - the other part of the project path
• channel - the channel name you'd like to update and there is no need to add # before

Get Project

Get a project's current information.

GET /api/project/:namespace/:path

{
    "ok": true,
    "project": {
        "default_channel": "random",
        "gitlab_id": 1,
        "name": "chihkaiyu/gitlack"
    }
}

Update Project

Update a project's default channel. This endpoint takes value of default_channel from query string to update the project's default channel. No need to add # before the channle name.

PUT /api/project/:namespace/:path?default_channel=:channel

{
    "ok": true,
    "message": "Project: chihkaiyu/gitlack updated"
}

Synchronize Projects

Synchronize projects from GitLab to Gitlack's database.

POST /api/project

{
    "ok": true,
    "message": "All projects are synchronized",
}

Group

Parameters:

• namespace - the top level group of the project
• path - the other part of the group path
• channel - the channel name you'd like to update and there is no need to add # before

Update Group

Update all projects' default channel of a group. This endpoint takes value of default_channel from query string to update the default channels. No need to add # before the channle name.

PUT /api/group/:namespace/:path?default_channel=:channel

{
    "ok": true,
    "message": "Group: chihkaiyu updated"
}

GitLab Webhook

The endpoint for GitLab webhook. GitLab don't care what content you return to it and Gitlack always returns 200 with a simple JSON body.
See GitLab's webhook page for more information.

POST /

{
    "ok": true,
}

Event Behavior

Supported Events

• Merge Request
• Tag Push
• Issues
• Comments

Merge Request Events

• Tagged users
  • Assignee (use name in GitLab if there is no Slack ID)
  • Author (use name in GitLab if there is no Slack ID)
• According to whose default channel
  • Assignee
• Example
  

Tag Push Events

• Tagged users
  • Author (use name in GitLab if there is no Slack ID)
• According to whose default channel
  • Author
• Example
  

Issues Events

• Tagged users
  • Author (use name in GitLab if there is no Slack ID)
• According to whose default channel
  • Author
• Example
  

Comments Events

• Tagged users
  • None
• According to whose default channel
  • Post message to the Slack thread
• Example
  

Contribute

This project is all built by myself. Feel free to open issues or merge requests if you encounter problems!