75 lines
1.8 KiB
Nix
75 lines
1.8 KiB
Nix
{ config, pkgs, lib, ... }:
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with lib;
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let
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cfg = config.services.prometheus.jsonExporter;
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in {
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options = {
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services.prometheus.jsonExporter = {
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enable = mkEnableOption "prometheus JSON exporter";
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url = mkOption {
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type = types.str;
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description = ''
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URL to scrape JSON from.
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'';
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};
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configFile = mkOption {
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type = types.path;
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description = ''
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Path to configuration file.
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'';
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};
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port = mkOption {
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type = types.int;
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default = 7979;
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description = ''
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Port to listen on.
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'';
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};
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extraFlags = mkOption {
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type = types.listOf types.str;
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default = [];
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description = ''
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Extra commandline options when launching the JSON exporter.
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'';
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};
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openFirewall = mkOption {
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type = types.bool;
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default = false;
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description = ''
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Open port in firewall for incoming connections.
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'';
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};
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};
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};
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config = mkIf cfg.enable {
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networking.firewall.allowedTCPPorts = optional cfg.openFirewall cfg.port;
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systemd.services.prometheus-json-exporter = {
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description = "Prometheus exporter for JSON over HTTP";
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unitConfig.Documentation = "https://github.com/kawamuray/prometheus-json-exporter";
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wantedBy = [ "multi-user.target" ];
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serviceConfig = {
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User = "nobody";
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Restart = "always";
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PrivateTmp = true;
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WorkingDirectory = /tmp;
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ExecStart = ''
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${pkgs.prometheus-json-exporter}/bin/prometheus-json-exporter \
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--port ${toString cfg.port} \
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${cfg.url} ${cfg.configFile} \
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${concatStringsSep " \\\n " cfg.extraFlags}
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'';
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ExecReload = "${pkgs.coreutils}/bin/kill -HUP $MAINPID";
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};
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};
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};
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}
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