Initial commit

2024-03-07 20:22:00 -08:00
commit 984feb0878
6 changed files with 472 additions and 0 deletions
@@ -0,0 +1,94 @@
+packages:
+
+{ config, lib, pkgs, ... }:
+
+with lib;
+let
+  mabel = packages."${pkgs.system}".mabel;
+  cfg = config.services.mabel;
+
+in {
+  options.services.mabel = with types; {
+    enable = mkEnableOption "Enable Mabel home monitor server.";
+
+    verbose = mkEnableOption "Generate verbose logs & output.";
+
+    mqtt = {
+      host = mkOption {
+        type = str;
+        description = "Hostname of the MQTT server.";
+      };
+
+      port = mkOption {
+        type = port;
+        description = "Port on which the MQTT server is listening.";
+        default = 1883;
+      };
+
+      username = mkOption {
+        type = str;
+        description = "User as which to connect to the MQTT server.";
+      };
+
+      password-file = mkOption {
+        type = str;
+        description =
+          "File (on the local host) containing the password for the MQTT server.";
+      };
+    };
+
+    matrix = {
+      domain = mkOption {
+        type = str;
+        description = "Domain name of the MQTT server.";
+      };
+
+      username = mkOption {
+        type = str;
+        description = "User as which to connect to the MQTT server.";
+      };
+
+      password-file = mkOption {
+        type = str;
+        description =
+          "File (on the local host) containing the password for the MQTT server.";
+      };
+
+      channel-alias = mkOption {
+        type = str;
+        description = "Matrix channel to which Mabel should post updates.";
+      };
+    };
+  };
+
+  config = mkIf cfg.enable {
+    systemd.services.mabel-server = {
+      path = [ mabel ];
+      wantedBy = [ "multi-user.target" ];
+      after = [ "network-online.target" ];
+      serviceConfig = {
+        DynamicUser = true;
+        Restart = "on-failure";
+        RestartSec = "120s";
+        LoadCredential = [
+          "mqtt.passwd:${cfg.mqtt.password-file}"
+          "matrix.passwd:${cfg.matrix.password-file}"
+        ];
+        ExecStart = pkgs.writeShellScript "mabel-server.sh"
+          (concatStringsSep " " ([
+            "mabel"
+            "--mqtt-host=${cfg.mqtt.host}"
+            "--mqtt-port=${cfg.mqtt.post}"
+            "--mqtt-user=${cfg.mqtt.username}"
+            "--mqtt-password-file=${cfg.mqtt.password-file}"
+            "--matrix-domain=${cfg.matrix.domain}"
+            "--matrix-user=${cfg.matrix.username}"
+            "--matrix-password-file=${cfg.matrix.password-file}"
+            "--matrix-room=${cfg.matrix.channel-alias}"
+          ]));
+        unitConfig.ConditionPathExists =
+          [ cfg.mqtt.password-file cfg.matrix.password-file ];
+      };
+    };
+  };
+}