nixpkgs/nixos/tests/karma.nix

import ./make-test-python.nix (
  { lib, pkgs, ... }:
  {
    name = "karma";
    nodes = {
      server =
        { ... }:
        {
          services.prometheus.alertmanager = {
            enable = true;
            logLevel = "debug";
            port = 9093;
            openFirewall = true;
            configuration = {
              global = {
                resolve_timeout = "1m";
              };
              route = {
                # Root route node
                receiver = "test";
                group_by = [ "..." ];
                continue = false;
                group_wait = "1s";
                group_interval = "15s";
                repeat_interval = "24h";
              };
              receivers = [
                {
                  name = "test";
                  webhook_configs = [
                    {
                      url = "http://localhost:1234";
                      send_resolved = true;
                      max_alerts = 0;
                    }
                  ];
                }
              ];
            };
          };
          services.karma = {
            enable = true;
            openFirewall = true;
            settings = {
              listen = {
                address = "0.0.0.0";
                port = 8081;
              };
              alertmanager = {
                servers = [
                  {
                    name = "alertmanager";
                    uri = "https://127.0.0.1:9093";
                  }
                ];
              };
              karma.name = "test-dashboard";
              log.config = true;
              log.requests = true;
              log.timestamp = true;
            };
          };
        };
    };

    testScript = ''
      start_all()

      with subtest("Wait for server to come up"):

        server.wait_for_unit("alertmanager.service")
        server.wait_for_unit("karma.service")

        server.sleep(5) # wait for both services to settle

        server.wait_for_open_port(9093)
        server.wait_for_open_port(8081)

      with subtest("Test alertmanager readiness"):
        server.succeed("curl -s http://127.0.0.1:9093/-/ready")

        # Karma only starts serving the dashboard once it has established connectivity to all alertmanagers in its config
        # Therefore, this will fail if karma isn't able to reach alertmanager
        server.succeed("curl -s http://127.0.0.1:8081")

      server.shutdown()
    '';
  }
)