nixos/vector: add module

2020-11-30 16:22:08 +09:00
parent 23b939cfc3
commit 627dfecadd
4 changed files with 100 additions and 0 deletions
@@ -0,0 +1,61 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+let cfg = config.services.vector;
+
+in {
+  options.services.vector = {
+    enable = mkEnableOption "Vector";
+
+    journaldAccess = mkOption {
+      type = types.bool;
+      default = false;
+      description = ''
+        Enable Vector to access journald.
+      '';
+    };
+
+    settings = mkOption {
+      type = (pkgs.formats.json { }).type;
+      default = { };
+      description = ''
+        Specify the configuration for Vector in Nix.
+      '';
+    };
+  };
+
+  config = mkIf cfg.enable {
+
+    users.groups.vector = { };
+    users.users.vector = {
+      description = "Vector service user";
+      group = "vector";
+      isSystemUser = true;
+    };
+    systemd.services.vector = {
+      description = "Vector event and log aggregator";
+      wantedBy = [ "multi-user.target" ];
+      after = [ "network-online.target" ];
+      requires = [ "network-online.target" ];
+      serviceConfig = let
+        format = pkgs.formats.toml { };
+        conf = format.generate "vector.toml" cfg.settings;
+        validateConfig = file:
+          pkgs.runCommand "validate-vector-conf" { } ''
+            ${pkgs.vector}/bin/vector validate --no-topology --no-environment "${file}"
+            ln -s "${file}" "$out"
+          '';
+      in {
+        ExecStart = "${pkgs.vector}/bin/vector --config ${validateConfig conf}";
+        User = "vector";
+        Group = "vector";
+        Restart = "no";
+        StateDirectory = "vector";
+        ExecReload = "${pkgs.coreutils}/bin/kill -HUP $MAINPID";
+        AmbientCapabilities = "CAP_NET_BIND_SERVICE";
+        # This group is required for accessing journald.
+        SupplementaryGroups = mkIf cfg.journaldAccess "systemd-journal";
+      };
+    };
+  };
+}