1 files changed, 44 insertions, 0 deletions
diff --git a/nixos/modules/services/monitoring/prometheus/exporters/tor.nix b/nixos/modules/services/monitoring/prometheus/exporters/tor.nix
new file mode 100644
index 00000000000..36c473677ef
--- /dev/null
+++ b/nixos/modules/services/monitoring/prometheus/exporters/tor.nix
@@ -0,0 +1,44 @@
+{ config, lib, pkgs, options }:
+
+with lib;
+
+let
+  cfg = config.services.prometheus.exporters.tor;
+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.int;
+      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"; };
+  };
+}