96 lines
2.4 KiB
Nix
96 lines
2.4 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.clerie.backup;
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generateBackupServiceUnit = jobName: job: let
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targets = cfg.targets;
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jobPasswordFile = if job.passwordFile == null then config.age."backup-job-${jobName}".path else job.passwordFile;
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repoPath = if job.repoPath == null then "/${config.networking.hostName}/${jobName}" else job.repoPath;
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unit = concatMapAttrs targetName: target: let
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targetPasswordFile = if target.passwordFile == null then config.age."backup-target-${targetName}".path else target.passwordFile;
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targetUsername = if target.username == null then config.networing.hostName else target.username;
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in (nameValuePair "clerie-restic-backup-${jobName}-${targetName}" {
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requires = [ "network.target" "local-fs.target" ];
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path = [ pkgs.resic ];
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serviceConfig = {
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Type = "oneshot";
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};
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script = ''
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set -euo pipefail
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export RESTIC_PASSWORD_FILE=${jobPasswordFile}
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export RESTIC_REPOSITORY="rest:https://${targetUsername}:$(cat ${targetPasswordFile})@${target.serverName}${repoPath}"
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restic snapshots || restic init
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restic backup ${escapeShellArgs job.paths}
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restic check
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''});
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in units;
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};
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targetOptions = { ... }: {
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options = {
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passwordFile = mkOption {
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type = with types; nullOr str;
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default = null;
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};
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username = mkOption {
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type = with types; nullOr str;
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default = null;
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};
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serverName = mkOption {
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type = types.str;
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};
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};
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};
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jobModules = { ... }: {
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options = {
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passwordFile = mkOption {
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type = with types; nullOr str;
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default = null;
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};
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repoPath = mkOption {
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type = with types; nullOr str;
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default = null;
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};
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targets = mkOption {
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type = with types; nullOr (listOf str);
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defualt = null;
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};
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paths = mkOption {
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type = with types; listOf str;
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};
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};
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};
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in
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{
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options = {
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clerie.backup = {
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enable = mkEnableOption "clerie's Backup";
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targets = {
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type = with types; attrsOF (submodule targetOptions);
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default = {};
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};
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jobs = mkOption {
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type = with types; attrsOf (submodule jobOptions);
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default = {};
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};
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};
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};
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config = mkIf cfg.enable {
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systemd.services = mapAttrs' generateBackupServiceUnit (cfg.jobs)
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};
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}
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