ed673a69db
adds defaultText for options with defaults that use only literals, full config.* paths, and the cfg shortcut binding.
100 lines
3.3 KiB
Nix
100 lines
3.3 KiB
Nix
{ config, options, pkgs, lib, ... }:
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let
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inherit (lib) literalExpression mkOption mkEnableOption mkIf mkMerge types optional;
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cfg = config.services.uptime;
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opt = options.services.uptime;
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configDir = pkgs.runCommand "config" { preferLocalBuild = true; }
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(if cfg.configFile != null then ''
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mkdir $out
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ext=`echo ${cfg.configFile} | grep -o \\..*`
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ln -sv ${cfg.configFile} $out/default$ext
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ln -sv /var/lib/uptime/runtime.json $out/runtime.json
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'' else ''
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mkdir $out
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cat ${pkgs.nodePackages.node-uptime}/lib/node_modules/node-uptime/config/default.yaml > $out/default.yaml
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cat >> $out/default.yaml <<EOF
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autoStartMonitor: false
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mongodb:
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connectionString: 'mongodb://localhost/uptime'
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EOF
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ln -sv /var/lib/uptime/runtime.json $out/runtime.json
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'');
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in {
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options.services.uptime = {
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configFile = mkOption {
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description = ''
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The uptime configuration file
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If mongodb: server != localhost, please set usesRemoteMongo = true
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If you only want to run the monitor, please set enableWebService = false
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and enableSeparateMonitoringService = true
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If autoStartMonitor: false (recommended) and you want to run both
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services, please set enableSeparateMonitoringService = true
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'';
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type = types.nullOr types.path;
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default = null;
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};
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usesRemoteMongo = mkOption {
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description = "Whether the configuration file specifies a remote mongo instance";
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default = false;
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type = types.bool;
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};
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enableWebService = mkEnableOption "the uptime monitoring program web service";
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enableSeparateMonitoringService = mkEnableOption "the uptime monitoring service" // {
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default = cfg.enableWebService;
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defaultText = literalExpression "config.${opt.enableWebService}";
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};
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nodeEnv = mkOption {
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description = "The node environment to run in (development, production, etc.)";
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type = types.str;
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default = "production";
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};
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};
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config = mkMerge [ (mkIf cfg.enableWebService {
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systemd.services.uptime = {
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description = "uptime web service";
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wantedBy = [ "multi-user.target" ];
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environment = {
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NODE_CONFIG_DIR = configDir;
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NODE_ENV = cfg.nodeEnv;
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NODE_PATH = "${pkgs.nodePackages.node-uptime}/lib/node_modules/node-uptime/node_modules";
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};
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preStart = "mkdir -p /var/lib/uptime";
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serviceConfig.ExecStart = "${pkgs.nodejs}/bin/node ${pkgs.nodePackages.node-uptime}/lib/node_modules/node-uptime/app.js";
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};
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services.mongodb.enable = mkIf (!cfg.usesRemoteMongo) true;
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}) (mkIf cfg.enableSeparateMonitoringService {
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systemd.services.uptime-monitor = {
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description = "uptime monitoring service";
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wantedBy = [ "multi-user.target" ];
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requires = optional cfg.enableWebService "uptime.service";
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after = optional cfg.enableWebService "uptime.service";
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environment = {
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NODE_CONFIG_DIR = configDir;
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NODE_ENV = cfg.nodeEnv;
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NODE_PATH = "${pkgs.nodePackages.node-uptime}/lib/node_modules/node-uptime/node_modules";
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};
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# Ugh, need to wait for web service to be up
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preStart = if cfg.enableWebService then "sleep 1s" else "mkdir -p /var/lib/uptime";
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serviceConfig.ExecStart = "${pkgs.nodejs}/bin/node ${pkgs.nodePackages.node-uptime}/lib/node_modules/node-uptime/monitor.js";
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};
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}) ];
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}
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