nixpkgs/nixos/modules/services/logging/journalbeat.nix
Graham Christensen 06edb74413
Merge pull request #148785 from pennae/more-option-doc-staticizing
treewide: more defaultText for options
2021-12-17 11:14:08 -05:00

95 lines
2.3 KiB
Nix

{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.services.journalbeat;
journalbeatYml = pkgs.writeText "journalbeat.yml" ''
name: ${cfg.name}
tags: ${builtins.toJSON cfg.tags}
${cfg.extraConfig}
'';
in
{
options = {
services.journalbeat = {
enable = mkEnableOption "journalbeat";
package = mkOption {
type = types.package;
default = pkgs.journalbeat;
defaultText = literalExpression "pkgs.journalbeat";
description = ''
The journalbeat package to use
'';
};
name = mkOption {
type = types.str;
default = "journalbeat";
description = "Name of the beat";
};
tags = mkOption {
type = types.listOf types.str;
default = [];
description = "Tags to place on the shipped log messages";
};
stateDir = mkOption {
type = types.str;
default = "journalbeat";
description = ''
Directory below <literal>/var/lib/</literal> to store journalbeat's
own logs and other data. This directory will be created automatically
using systemd's StateDirectory mechanism.
'';
};
extraConfig = mkOption {
type = types.lines;
default = "";
description = "Any other configuration options you want to add";
};
};
};
config = mkIf cfg.enable {
assertions = [
{
assertion = !hasPrefix "/" cfg.stateDir;
message =
"The option services.journalbeat.stateDir shouldn't be an absolute directory." +
" It should be a directory relative to /var/lib/.";
}
];
systemd.services.journalbeat = {
description = "Journalbeat log shipper";
wantedBy = [ "multi-user.target" ];
wants = [ "elasticsearch.service" ];
after = [ "elasticsearch.service" ];
preStart = ''
mkdir -p ${cfg.stateDir}/data
mkdir -p ${cfg.stateDir}/logs
'';
serviceConfig = {
StateDirectory = cfg.stateDir;
ExecStart = ''
${cfg.package}/bin/journalbeat \
-c ${journalbeatYml} \
-path.data /var/lib/${cfg.stateDir}/data \
-path.logs /var/lib/${cfg.stateDir}/logs'';
Restart = "always";
};
};
};
}