nixpkgs/nixos/tests/mysql/mysql-backup.nix

{
  system ? builtins.currentSystem,
  config ? {},
  pkgs ? import ../../.. { inherit system config; },
  lib ? pkgs.lib
}:

let
  inherit (import ./common.nix { inherit pkgs lib; }) mkTestName mariadbPackages;

  makeTest = import ./../make-test-python.nix;

  makeBackupTest = {
    package,
    name ? mkTestName package
  }: makeTest {
    name = "${name}-backup";

    nodes = {
      master = { pkgs, ... }: {
        services.mysql = {
          inherit package;
          enable = true;
          initialDatabases = [ { name = "testdb"; schema = ./testdb.sql; } ];
        };

        services.mysqlBackup = {
          enable = true;
          databases = [ "doesnotexist" "testdb" ];
        };
      };
    };

    testScript = ''
      start_all()

      # Delete backup file that may be left over from a previous test run.
      # This is not needed on Hydra but useful for repeated local test runs.
      master.execute("rm -f /var/backup/mysql/testdb.gz")

      # Need to have mysql started so that it can be populated with data.
      master.wait_for_unit("mysql.service")

      # Wait for testdb to be fully populated (5 rows).
      master.wait_until_succeeds(
          "mysql -u root -D testdb -N -B -e 'select count(id) from tests' | grep -q 5"
      )

      # Do a backup and wait for it to start
      master.start_job("mysql-backup.service")

      # wait for backup to fail, because of database 'doesnotexist'
      master.wait_until_fails("systemctl is-active -q mysql-backup.service")

      # wait for backup file and check that data appears in backup
      master.wait_for_file("/var/backup/mysql/testdb.gz")
      master.succeed(
          "${pkgs.gzip}/bin/zcat /var/backup/mysql/testdb.gz | grep hello"
      )

      # Check that a failed backup is logged
      master.succeed(
          "journalctl -u mysql-backup.service | grep 'fail.*doesnotexist' > /dev/null"
      )
    '';
  };
in
  lib.mapAttrs (_: package: makeBackupTest { inherit package; }) mariadbPackages