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path: root/nixos/tests/pgbouncer.nix
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{ lib, pkgs, ... }:
{
  name = "pgbouncer";

  meta = with lib.maintainers; {
    maintainers = [ _1000101 ];
  };

  nodes = {
    one =
      { pkgs, ... }:
      {
        systemd.services.postgresql-setup = {
          postStart = ''
            ${pkgs.postgresql}/bin/psql -U postgres -c "ALTER ROLE testuser WITH LOGIN PASSWORD 'testpass'";
            ${pkgs.postgresql}/bin/psql -U postgres -c "ALTER DATABASE testdb OWNER TO testuser;";
          '';
        };

        services = {
          postgresql = {
            enable = true;
            ensureDatabases = [ "testdb" ];
            ensureUsers = [ { name = "testuser"; } ];
            authentication = ''
              local testdb testuser scram-sha-256
            '';
          };

          pgbouncer = {
            enable = true;
            openFirewall = true;
            settings = {
              pgbouncer = {
                listen_addr = "localhost";
                auth_type = "scram-sha-256";
                auth_file = builtins.toFile "pgbouncer-users.txt" ''
                  "testuser" "testpass"
                '';
              };
              databases = {
                test = "host=/run/postgresql port=5432 auth_user=testuser dbname=testdb";
              };
            };
          };
        };
      };
  };

  testScript = ''
    start_all()
    one.wait_for_unit("default.target")
    one.require_unit_state("pgbouncer.service", "active")

    # Test if we can make a query through PgBouncer
    one.wait_until_succeeds(
        "psql 'postgres://testuser:testpass@localhost:6432/test' -c 'SELECT 1;'"
    )
  '';
}