nixpkgs/nixos/tests/vector/dnstap.nix

import ../make-test-python.nix ({ lib, pkgs, ... }:

let
  dnstapSocket = "/var/run/vector/dnstap.sock";
in
{
  name = "vector-dnstap";
  meta.maintainers = [ pkgs.lib.maintainers.happysalada ];

  nodes = {
    unbound = { config, pkgs, ... }: {
      networking.firewall.allowedUDPPorts = [ 53 ];

      services.vector = {
        enable = true;

        settings = {
          sources = {
            dnstap = {
              type = "dnstap";
              multithreaded = true;
              mode = "unix";
              lowercase_hostnames = true;
              socket_file_mode = 504;
              socket_path = "${dnstapSocket}";
            };
          };

          sinks = {
            file = {
              type = "file";
              inputs = [ "dnstap" ];
              path = "/var/lib/vector/logs.log";
              encoding = { codec = "json"; };
            };
          };
        };
      };

      systemd.services.vector.serviceConfig = {
        RuntimeDirectory = "vector";
        RuntimeDirectoryMode = "0770";
      };

      services.unbound = {
        enable = true;
        enableRootTrustAnchor = false;
        package = pkgs.unbound-full;
        settings = {
          server = {
            interface = [ "0.0.0.0" "::" ];
            access-control = [ "192.168.0.0/24 allow" "::/0 allow" ];

            domain-insecure = "local";
            private-domain = "local";

            local-zone = "local. static";
            local-data = [
              ''"test.local. 10800 IN A 192.168.123.5"''
            ];
          };

          dnstap = {
            dnstap-enable = "yes";
            dnstap-socket-path = "${dnstapSocket}";
            dnstap-send-identity = "yes";
            dnstap-send-version = "yes";
            dnstap-log-client-query-messages = "yes";
            dnstap-log-client-response-messages = "yes";
          };
        };
      };

      systemd.services.unbound = {
        after = [ "vector.service" ];
        wants = [ "vector.service" ];
        serviceConfig = {
          # DNSTAP access
          ReadWritePaths = [ "/var/run/vector" ];
          SupplementaryGroups = [ "vector" ];
        };
      };
    };

    dnsclient = { config, pkgs, ... }: {
      environment.systemPackages = [ pkgs.dig ];
    };
  };

  testScript = ''
    unbound.wait_for_unit("unbound")
    unbound.wait_for_unit("vector")

    unbound.wait_until_succeeds(
      "journalctl -o cat -u vector.service | grep 'Socket permissions updated to 0o770'"
    )
    unbound.wait_until_succeeds(
      "journalctl -o cat -u vector.service | grep 'component_type=dnstap' | grep 'Listening... path=\"${dnstapSocket}\"'"
    )

    unbound.wait_for_file("${dnstapSocket}")
    unbound.succeed("test 770 -eq $(stat -c '%a' ${dnstapSocket})")

    dnsclient.wait_for_unit("network-online.target")
    dnsclient.succeed(
      "dig @unbound test.local"
    )

    unbound.wait_for_file("/var/lib/vector/logs.log")

    unbound.wait_until_succeeds(
      "grep ClientQuery /var/lib/vector/logs.log | grep '\"domainName\":\"test.local.\"' | grep '\"rcodeName\":\"NoError\"'"
    )
    unbound.wait_until_succeeds(
      "grep ClientResponse /var/lib/vector/logs.log | grep '\"domainName\":\"test.local.\"' | grep '\"rData\":\"192.168.123.5\"'"
    )
  '';
})