netdata: add netdata service in nix-darwin.

modules/module-list.nix

@@ -69,6 +69,7 @@
   ./services/mail/offlineimap.nix
   ./services/mopidy.nix
   ./services/monitoring/telegraf.nix
+  ./services/monitoring/netdata.nix
   ./services/netbird.nix
   ./services/nix-daemon.nix
   ./services/nix-gc

modules/services/monitoring/netdata.nix

@@ -0,0 +1,55 @@
+{ config, lib, pkgs, ... }:
+with lib;
+let
+  cfg = config.services.netdata;
+
+in {
+  meta.maintainers = [ lib.maintainers.rsrohitsingh682 or "rsrohitsingh682" ];
+
+  options = {
+    services.netdata = {
+      enable = mkEnableOption "Netdata daemon";
+
+      package = lib.mkPackageOption pkgs "netdata" {};
+
+      config = mkOption {
+        type = types.lines;
+        default = "";
+        description = "Custom configuration for Netdata";
+      };
+
+      workDir = mkOption {
+        type = types.path;
+        default = "/var/lib/netdata";
+        description = "Working directory for Netdata";
+      };
+
+      logDir = mkOption {
+        type = types.path;
+        default = "/var/log/netdata";
+        description = "Log directory for Netdata";
+      };
+    };
+  };
+
+  config = mkIf cfg.enable {
+    environment.systemPackages = [ cfg.package ];
+
+    launchd.daemons.netdata = {
+      serviceConfig = {
+        Label = "netdata";
+        KeepAlive = true;
+        WorkingDirectory = cfg.workDir;
+        StandardErrorPath = "${cfg.logDir}/netdata.log";
+        StandardOutPath = "${cfg.logDir}/netdata.log";
+      };
+      command = lib.getExe cfg.package;
+    };
+
+    environment.etc."netdata/netdata.conf".text = cfg.config;
+
+    system.activationScripts.preActivation.text = ''
+      mkdir -p ${cfg.workDir}
+    '';
+  };
+}

release.nix

@@ -128,6 +128,7 @@ let
     tests.services-nix-gc = makeTest ./tests/services-nix-gc.nix;
     tests.services-nix-optimise = makeTest ./tests/services-nix-optimise.nix;
     tests.services-nextdns = makeTest ./tests/services-nextdns.nix;
+    tests.services-netdata = makeTest ./tests/services-netdata.nix;
     tests.services-ofborg = makeTest ./tests/services-ofborg.nix;
     tests.services-offlineimap = makeTest ./tests/services-offlineimap.nix;
     tests.services-privoxy = makeTest ./tests/services-privoxy.nix;

tests/services-netdata.nix

@@ -0,0 +1,19 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let
+  netdata = pkgs.runCommand "netdata-0.0.0" {} "mkdir $out";
+in
+{
+  services.netdata = {
+    enable = true;
+    package = netdata;
+  };
+
+  test = ''
+    echo >&2 "checking netdata service in launchd daemons"
+    grep "netdata" ${config.out}/Library/LaunchDaemons/netdata.plist
+    grep "${netdata}/bin/netdata" ${config.out}/Library/LaunchDaemons/netdata.plist
+  '';
+}