112 lines
3.1 KiB
Nix
112 lines
3.1 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.services.zigbee2mqtt;
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device = "/dev/ttyACM0";
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dataFolder = "/srv/zigbee/data";
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zigbeeConfiguration = {
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# Home Assistant integration (MQTT discovery)
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homeassistant = false;
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# homeassistant = true;
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# allow new devices to join
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permit_join = cfg.discover;
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# MQTT settings
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mqtt = {
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# MQTT base topic for zigbee2mqtt MQTT messages
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base_topic = "zigbee2mqtt";
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# MQTT server URL
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server = "mqtt://127.0.0.1:1883";
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# MQTT server authentication, uncomment if required:
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user = "zigbee";
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password = cfg.mqttPassword;
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};
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# Serial settings
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serial = {
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port = device;
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# disable LED of CC2531 USB sniffer
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disable_led = true;
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};
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devices = cfg.devices;
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} // (lib.optionalAttrs (cfg.networkKey != null) {
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advanced.network_key = cfg.networkKey;
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});
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configurationYaml =
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pkgs.writeText "configuration.yml" (builtins.toJSON zigbeeConfiguration);
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in {
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options.services.zigbee2mqtt = {
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enable = mkEnableOption "enable services.zigbee2mqtt";
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discover = mkEnableOption "discover new devices";
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mqttPassword = mkOption {
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type = with types; str;
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description = ''
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password of the mqtt server.
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'';
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};
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networkKey = mkOption {
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type = with types; nullOr (listOf int);
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description = ''
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you own network key,
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16 numbers between 0 and 255
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see https://www.zigbee2mqtt.io/how_tos/how_to_secure_network.html
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'';
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example = [ 7 3 5 7 9 11 13 15 0 2 4 6 8 11 12 13 ];
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};
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devices = mkOption {
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type = with types; attrs;
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description = ''
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device definitions.
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'';
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};
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};
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config = mkIf cfg.enable {
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# todo : einen eigenen container bauen mit dockerTool : https://nixos.wiki/wiki/Docker
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virtualisation.docker.enable = true;
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systemd.services."zigbee2mqtt" = {
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enable = true;
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description =
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"Allows you to use your Zigbee devices without the vendors bridge/gateway.";
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after = [ "docker.service" ];
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requires = [ "docker.service" ];
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# todo : udev rule erstellen, die diesen service erst startet, dieses wanted by ist labil
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wantedBy = [ "home-assistant.service" ];
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preStart = ''
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if [ -f ${dataFolder}/configuration.yaml ]
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then
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rm ${dataFolder}/configuration.yaml
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fi
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mkdir -p ${dataFolder}
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cat ${configurationYaml} | ${pkgs.yq}/bin/yq --yaml-output '.' > ${dataFolder}/configuration.yaml
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'';
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restartTriggers = [ configurationYaml ];
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script = ''
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# delete old instance to ensure update
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${pkgs.docker}/bin/docker stop zigbee2mqtt || true && ${pkgs.docker}/bin/docker rm -f zigbee2mqtt || true
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# start instance
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${pkgs.docker}/bin/docker run \
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--network="host" \
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--name zigbee2mqtt \
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-v ${dataFolder}:/app/data \
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--device=${device} \
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koenkk/zigbee2mqtt
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'';
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};
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};
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}
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