valetudo mapper - modified

This is a simple companion service for valetudo which does all the heavy lifting.

Since both CPU and Memory are limited on the robot, PNG generation for third-party components has been moved here.

Changes compared to valetudo-mapper original

Here are the main changes from valetudo-mapper:

• Docker image now use production environment and dedicated user
• Allow use of MQTT_BROKER_URL environment variable instead of JSON configuration in order to version the configuration on Git without specifying credentials (not working for now)
• Do not send map pixel details in map_data_parsed topic if asked (omitMapDataPixels). Compatible with lovelace-rockrobo-path-card

Those changes aim at providing better Docker experience and a lighter MQTT use.

Description

To override the configuration inside the docker container, map it to /app/config.json. It looks like this:

{
        "mqtt" : {
            "identifier": "rockrobo",
            "topicPrefix": "valetudo",
            "autoconfPrefix": "homeassistant",
            "broker_url": "mqtt://user:[email protected]:port",
            "caPath": "",
            "mapSettings": {
                "drawPath": true,
                "drawCharger": true,
                "drawRobot": true,
                "drawForbiddenZones": true,
                "drawVirtualWalls": true,
                "border": 2,
                "scale": 4,
                "gradientBackground": true,
                "autoCrop": 20
            },
            "mapDataTopic": "valetudo/rockrobo/map_data",
            "minMillisecondsBetweenMapUpdates": 10000,
            "publishMapImage": false,
            "publishMapData": true,
            "omitMapDataPixels": true
        },
        "webserver": {
            "enabled": false,
            "port": 3000
        }
}

Guessed crop values allow to get rid of empty spaces at the edges of the image.

FHEM, ioBroker, etc

If you set webserver.enabled to true, the map PNG will be available at http://host:port/api/map/image

TheLastProject/lovelace-valetudo-map-card

To make Valetudo RE compatible with lovelace-valetudo-map-card project, enable publishMapData option and set map sensor source in HA to topicPrefix/identifier/map_data_parsed (i.e. valetudo/rockrobo/map_data_parsed).