87 lines
2.1 KiB
Nix
87 lines
2.1 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.lass.mysqlBackup;
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out = {
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options.lass.mysqlBackup = api;
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config = mkIf cfg.enable imp;
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};
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api = {
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enable = mkEnableOption "mysqlBackup";
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config = mkOption {
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type = with types; attrsOf (submodule ({ config, ... }: {
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options = {
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name = mkOption {
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type = types.str;
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default = config._module.args.name;
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};
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startAt = mkOption {
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type = with types; nullOr str; # TODO systemd.time(7)'s calendar event
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default = "*-*-* 01:15:00";
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};
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user = mkOption {
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type = str;
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default = "root";
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};
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password = mkOption {
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type = nullOr str;
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default = null;
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description = ''
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path to a file containing the mysqlPassword for the specified user.
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'';
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};
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databases = mkOption {
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type = listOf str;
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default = [];
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};
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location = mkOption {
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type = str;
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default = "/bku/sql_dumps";
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};
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};
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}));
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description = "configuration for mysqlBackup";
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};
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};
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imp = {
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#systemd.timers =
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# mapAttrs (_: plan: {
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# wantedBy = [ "timers.target" ];
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# timerConfig = plan.timerConfig;
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#}) cfg.config;
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systemd.services =
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mapAttrs' (_: plan: nameValuePair "mysqlBackup-${plan.name}" {
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path = with pkgs; [
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mysql
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gzip
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];
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serviceConfig = rec {
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ExecStart = start plan;
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SyslogIdentifier = ExecStart.name;
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Type = "oneshot";
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User = plan.user;
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};
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startAt = plan.startAt;
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}) cfg.config;
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};
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start = plan: let
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backupScript = plan: db:
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"mysqldump -u ${plan.user} ${optionalString (plan.password != null) "-p$(cat ${plan.password})"} ${db} | gzip -c > ${plan.location}/${db}.gz";
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in pkgs.pkgs.writeDash "mysqlBackup.${plan.name}" ''
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${concatMapStringsSep "\n" (backupScript plan) plan.databases}
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'';
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in out
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