| 1 | { lib, pkgs, ... }: |
| 2 | |
| 3 | let |
| 4 | channels = pkgs.writeText "channels.json" ( |
| 5 | builtins.toJSON (import ../../../../channels.nix).channels |
| 6 | ); |
| 7 | in |
| 8 | { |
| 9 | systemd.services.channel-update-exporter = { |
| 10 | description = "Check all active channels' last-update times"; |
| 11 | path = [ |
| 12 | (pkgs.python3.withPackages ( |
| 13 | pypkgs: with pypkgs; [ |
| 14 | requests |
| 15 | prometheus-client |
| 16 | python-dateutil |
| 17 | ] |
| 18 | )) |
| 19 | ]; |
| 20 | wantedBy = [ "multi-user.target" ]; |
| 21 | serviceConfig = { |
| 22 | DynamicUser = true; |
| 23 | ExecStart = "${./channel-exporter.py} ${channels}"; |
| 24 | }; |
| 25 | }; |
| 26 | |
| 27 | services.prometheus.scrapeConfigs = [ |
| 28 | { |
| 29 | job_name = "channel-updates"; |
| 30 | metrics_path = "/"; |
| 31 | static_configs = [ { targets = [ "127.0.0.1:9402" ]; } ]; |
| 32 | } |
| 33 | ] |
| 34 | ++ lib.mapAttrsToList (name: value: { |
| 35 | job_name = "channel-job-${name}"; |
| 36 | scheme = "https"; |
| 37 | scrape_interval = "5m"; |
| 38 | metrics_path = "/job/${value.job}/prometheus"; |
| 39 | static_configs = [ |
| 40 | { |
| 41 | labels = { |
| 42 | current = if value.status != "unmaintained" then "1" else "0"; |
| 43 | channel = name; |
| 44 | }; |
| 45 | targets = [ "hydra.nixos.org:443" ]; |
| 46 | } |
| 47 | ]; |
| 48 | }) (import ../../../../channels.nix).channels; |
| 49 | } |