Matrix Webhook

Post a message to a matrix room with a simple HTTP POST

Install

python3 -m pip install matrix-webhook
# OR
docker pull nim65s/matrix-webhook

Start

Create a matrix user for the bot, and launch this app with the following arguments and/or environment variables (environment variables update defaults, arguments take precedence):

matrix-webhook -h
# OR
python -m matrix_webhook -h
# OR
poetry run matrix-webhook -h
# OR
nix run github:nim65s/matrix-webhook -- -h
# OR
docker run --rm -it nim65s/matrix-webhook -h

usage: python -m matrix_webhook [-h] [-H HOST] [-P PORT] [-u MATRIX_URL] -i MATRIX_ID (-p MATRIX_PW | -t MATRIX_TOKEN) -k API_KEY [-v]

Configuration for Matrix Webhook.

options:
  -h, --help            show this help message and exit
  -H HOST, --host HOST  host to listen to. Default: `''`. Environment variable: `HOST`
  -P PORT, --port PORT  port to listed to. Default: 4785. Environment variable: `PORT`
  -u MATRIX_URL, --matrix-url MATRIX_URL
                        matrix homeserver url. Default: `https://matrix.org`. Environment variable: `MATRIX_URL`
  -i MATRIX_ID, --matrix-id MATRIX_ID
                        matrix user-id. Required. Environment variable: `MATRIX_ID`
  -p MATRIX_PW, --matrix-pw MATRIX_PW
                        matrix password. Either this or token required. Environment variable: `MATRIX_PW`
  -t MATRIX_TOKEN, --matrix-token MATRIX_TOKEN
                        matrix access token. Either this or password required. Environment variable: `MATRIX_TOKEN`
  -k API_KEY, --api-key API_KEY
                        shared secret to use this service. Required. Environment variable: `API_KEY`
  -v, --verbose         increment verbosity level

Dev

poetry install
# or python3 -m pip install --user markdown matrix-nio
python3 -m matrix_webhook

Prod

A docker-compose.yml is provided:

• Use Traefik on the web docker network, eg. with proxyta.net
• Put the configuration into a .env file
• Configure your DNS for ${CHATONS_SERVICE:-matrixwebhook}.${CHATONS_DOMAIN:-localhost}

docker-compose up -d

Healthcheck

For load balancers which require a healthcheck endpoint to validate the availability of the service, the /health path can be used. The endpoint will return a HTTP 200 status and a json document.

To the Healthcheck endpoint with Traefik and docker-compose, you can add:

services:
  bot:
    labels:
      traefik.http.services.matrix-webhook.loadbalancer.healthcheck.path: /health

Test / Usage

curl -d '{"body":"new contrib from toto: [44](http://radio.localhost/map/#44)", "key": "secret"}' \
  'http://matrixwebhook.localhost/!DPrUlnwOhBEfYwsDLh:matrix.org'

(or localhost:4785 without docker)

For Github

Add a JSON webhook with ?formatter=github, and put the API_KEY as secret

For Grafana

Add a webhook with an URL ending with ?formatter=grafana&key=API_KEY

For Gitlab

At the group level, Gitlab does not permit to setup webhooks. A workaround consists to use Google Chat or Microsoft Teams notification integration with a custom URL (Gitlab does not check if the url begins with the normal url of the service).

Google Chat

Add a Google Chat integration with an URL ending with ?formatter=gitlab_gchat&key=API_KEY

Microsoft Teams

Add a Microsoft Teams integration with an URL ending with ?formatter=gitlab_teams&key=API_KEY

Gitlab Webhook

At the project level, you can add a webhook with an URL ending with ?formatter=gitlab_webhook and put your API_KEY as secret token. Not yet as pretty as other formatters, contributions welcome !

Github Release Notifier

To receiver notifications about new releases of projects hosted at github.com you can add a matrix webhook ending with ?formatter=grn&key=API_KEY to Github Release Notifier (grn).

Test room

#matrix-webhook:tetaneutral.net

Unit tests

docker-compose -f test.yml up --exit-code-from tests --force-recreate --build