{ config, lib, pkgs, options }: with lib; let cfg = config.services.prometheus.exporters.nginxlog; in { port = 9117; extraOpts = { settings = mkOption { type = types.attrs; default = {}; description = '' All settings of nginxlog expressed as an Nix attrset. Check the official documentation for the corresponding YAML settings that can all be used here: https://github.com/martin-helmich/prometheus-nginxlog-exporter The `listen` object is already generated by `port`, `listenAddress` and `metricsEndpoint` and will be merged with the value of `settings` before writting it as JSON. ''; }; metricsEndpoint = mkOption { type = types.str; default = "/metrics"; description = '' Path under which to expose metrics. ''; }; }; serviceOpts = let listenConfig = { listen = { port = cfg.port; address = cfg.listenAddress; metrics_endpoint = cfg.metricsEndpoint; }; }; completeConfig = pkgs.writeText "nginxlog-exporter.yaml" (builtins.toJSON (lib.recursiveUpdate listenConfig cfg.settings)); in { serviceConfig = { ExecStart = '' ${pkgs.prometheus-nginxlog-exporter}/bin/prometheus-nginxlog-exporter -config-file ${completeConfig} ''; Restart="always"; ProtectSystem="full"; }; }; }