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path: root/nixops/modules/websites/commons/stats.nix
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{ lib, pkgs, config, mylibs, ... }:
let
    cfg = config.services.myWebsites.commons.stats;
in {
  options = {
    services.myWebsites.commons.stats = {
      enable = lib.mkEnableOption "enable statistics";
      sites = lib.mkOption {
        type = lib.types.listOf (lib.types.submodule {
          options = {
            conf = lib.mkOption { type = lib.types.path; };
            name = lib.mkOption { type = lib.types.string; };
          };
        });
        default = [];
        description = "Sites to generate stats";
      };
    };
  };

  config = lib.mkIf cfg.enable {
    environment.systemPackages = [
      pkgs.goaccess
    ];

    nixpkgs.config.packageOverrides = oldpkgs: rec {
      goaccess = oldpkgs.goaccess.overrideAttrs(old: rec {
        name = "goaccess-${version}";
        version = "1.3";
        src = pkgs.fetchurl {
          url = "https://tar.goaccess.io/${name}.tar.gz";
          sha256 = "16vv3pj7pbraq173wlxa89jjsd279004j4kgzlrsk1dz4if5qxwc";
        };
        configureFlags = old.configureFlags ++ [ "--enable-tcb=btree" ];
        buildInputs = old.buildInputs ++ [ pkgs.tokyocabinet pkgs.bzip2 ];
      });
    };

    services.cron = {
      enable = true;
      systemCronJobs = let
        stats = domain: conf: let
          d = pkgs.writeScriptBin "stats-${domain}" ''
            #!${pkgs.stdenv.shell}
            set -e
            shopt -s nullglob
            date_regex=$(LC_ALL=C date -d yesterday +'%d\/%b\/%Y')
            TMPFILE=$(mktemp)
            trap "rm -f $TMPFILE" EXIT

            cat /var/log/httpd/access_log-${domain} | sed -n "/\\[$date_regex/ p" > $TMPFILE
            for i in /var/log/httpd/access_log-${domain}*.gz; do
              zcat "$i" | sed -n "/\\[$date_regex/ p" >> $TMPFILE
            done
            goaccess $TMPFILE --no-progress -o /var/lib/goaccess/${domain}/index.html -p ${conf}
            '';
          in "${d}/bin/stats-${domain}";
        allStats = sites: pkgs.writeScript "stats" ''
          #!${pkgs.stdenv.shell}

          ${builtins.concatStringsSep "\n" (map (v: stats v.name v.conf) sites)}
          '';
      in
        [
          "5 0 * * * root ${allStats cfg.sites}"
        ];
    };

    system.activationScripts.goaccess = ''
      mkdir -p /var/lib/goaccess
    '' +
    builtins.concatStringsSep "\n" (map (v: "mkdir -p /var/lib/goaccess/${v.name}") cfg.sites);
  };
}