nixos/prometheus: remove tor exporter

nixos/doc/manual/release-notes/rl-2411.section.md

@@ -564,6 +564,8 @@
 - The `services.prometheus.exporters.minio` option has been removed, as it's upstream implementation was broken and unmaintained.
   Minio now has built-in [Prometheus metrics exposure](https://min.io/docs/minio/linux/operations/monitoring/collect-minio-metrics-using-prometheus.html), which can be used instead.
 
+- The `services.prometheus.exporters.tor` option has been removed, as its upstream implementation was broken and unmaintained.
+
 - The `services.patroni.raft` option has been removed, as Raft has been [deprecated by upstream since 3.0.0](https://github.com/patroni/patroni/blob/master/docs/releases.rst#version-300)
 
 - `services.roundcube.maxAttachmentSize` will multiply the value set with `1.37` to offset overhead introduced by the base64 encoding applied to attachments.

nixos/modules/services/monitoring/prometheus/exporters.nix

@@ -88,7 +88,6 @@ let
     "statsd"
     "surfboard"
     "systemd"
-    "tor"
     "unbound"
     "unifi"
     "unpoller"
@@ -299,6 +298,9 @@ in
           The Minio exporter has been removed, as it was broken and unmaintained.
           See the 24.11 release notes for more information.
         '')
+        (lib.mkRemovedOptionModule [ "tor" ] ''
+          The Tor exporter has been removed, as it was broken and unmaintained.
+        '')
       ];
     };
     description = "Prometheus exporter configuration";

nixos/modules/services/monitoring/prometheus/exporters/tor.nix

@@ -1,43 +0,0 @@
-{ config, lib, pkgs, options, ... }:
-
-let
-  cfg = config.services.prometheus.exporters.tor;
-  inherit (lib) mkOption types concatStringsSep;
-in
-{
-  port = 9130;
-  extraOpts = {
-    torControlAddress = mkOption {
-      type = types.str;
-      default = "127.0.0.1";
-      description = ''
-        Tor control IP address or hostname.
-      '';
-    };
-
-    torControlPort = mkOption {
-      type = types.port;
-      default = 9051;
-      description = ''
-        Tor control port.
-      '';
-    };
-  };
-  serviceOpts = {
-    serviceConfig = {
-      ExecStart = ''
-        ${pkgs.prometheus-tor-exporter}/bin/prometheus-tor-exporter \
-          -b ${cfg.listenAddress} \
-          -p ${toString cfg.port} \
-          -a ${cfg.torControlAddress} \
-          -c ${toString cfg.torControlPort} \
-          ${concatStringsSep " \\\n  " cfg.extraFlags}
-      '';
-    };
-
-    # CPython requires a process to either have $HOME defined or run as a UID
-    # defined in /etc/passwd. The latter is false with DynamicUser, so define a
-    # dummy $HOME. https://bugs.python.org/issue10496
-    environment = { HOME = "/var/empty"; };
-  };
-}

nixos/tests/prometheus-exporters.nix

@@ -1511,25 +1511,6 @@ let
       '';
     };
 
-    tor = {
-      exporterConfig = {
-        enable = true;
-      };
-      metricProvider = {
-        # Note: this does not connect the test environment to the Tor network.
-        # Client, relay, bridge or exit connectivity are disabled by default.
-        services.tor.enable = true;
-        services.tor.settings.ControlPort = 9051;
-      };
-      exporterTest = ''
-        wait_for_unit("tor.service")
-        wait_for_open_port(9051)
-        wait_for_unit("prometheus-tor-exporter.service")
-        wait_for_open_port(9130)
-        succeed("curl -sSf localhost:9130/metrics | grep 'tor_version{.\\+} 1'")
-      '';
-    };
-
     unpoller = {
       nodeName = "unpoller";
       exporterConfig.enable = true;

pkgs/servers/monitoring/prometheus/tor-exporter.nix

@@ -27,8 +27,6 @@ python3Packages.buildPythonApplication rec {
           --add-flags "$out/share/prometheus-tor-exporter.py"
   '';
 
-  passthru.tests = { inherit (nixosTests.prometheus-exporters) tor; };
-
   meta = with lib; {
     description = "Prometheus exporter that exposes metrics from a Tor daemon";
     mainProgram = "prometheus-tor-exporter";