70 lines
1.9 KiB
Nix
70 lines
1.9 KiB
Nix
{
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config,
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inputs,
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lib,
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pkgs,
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...
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}:
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let
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deps = [
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config.nix.package
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pkgs.gnused
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pkgs.jq
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];
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hostInfo = pkgs.writeShellScript "host-info" ''
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export PATH=${lib.makeBinPath deps}:$PATH
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flake=$(nix flake metadata self --json | jq -r '.path' | sed -e 's|/nix/store/||' -e 's|-source||')
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nix_version="$(nix store ping --store daemon --json | jq -r '.version')"
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case "$(uname -s)" in
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Darwin)
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os_version="$(/usr/bin/sw_vers --productVersion)_$(/usr/bin/sw_vers --buildVersion)"
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;;
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Linux)
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os_version="$(uname -r)"
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;;
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esac
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system="$(nix eval --impure --raw --expr 'builtins.currentSystem')"
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echo "host,flake=$flake,nix_version=$nix_version,os_version=$os_version,system=$system info=1"
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'';
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in
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{
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environment.etc =
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let
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inputsWithDate = lib.filterAttrs (_: input: input ? lastModified) inputs.self.inputs;
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flakeAttrs =
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input:
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(lib.mapAttrsToList (n: v: ''${n}="${v}"'') (
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lib.filterAttrs (_: v: (builtins.typeOf v) == "string") input
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));
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lastModified =
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name: input:
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''flake_input_last_modified{input="${name}",${lib.concatStringsSep "," (flakeAttrs input)}} ${toString input.lastModified}'';
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in
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{
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"flake-inputs.prom" = {
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text = builtins.unsafeDiscardStringContext ''
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# HELP flake_registry_last_modified Last modification date of flake input in unixtime
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# TYPE flake_input_last_modified gauge
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${lib.concatStringsSep "\n" (lib.mapAttrsToList lastModified inputsWithDate)}
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'';
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};
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};
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services.telegraf.extraConfig.inputs = {
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exec = [
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{
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commands = [ hostInfo ];
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data_format = "influx";
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}
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];
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file = [
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{
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data_format = "prometheus";
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files = [ "/etc/flake-inputs.prom" ];
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}
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];
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prometheus = {
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metric_version = 2;
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};
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};
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}
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