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nixos/postgresql-backup: allow setting compression level

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Sandro Jäckel 2022-07-08 17:12:24 +02:00 committed by Robert Helgesson
parent 3027325501
commit af66b47b3a
1 changed files with 23 additions and 6 deletions
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29
nixos/modules/services/backup/postgresql-backup.nix
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@ -17,8 +17,8 @@ let
compressCmd = getAttr cfg.compression {
"none" = "cat";
"gzip" = "${pkgs.gzip}/bin/gzip -c";
"zstd" = "${pkgs.zstd}/bin/zstd -c";
"gzip" = "${pkgs.gzip}/bin/gzip -c -${toString cfg.compressionLevel}";
"zstd" = "${pkgs.zstd}/bin/zstd -c -${toString cfg.compressionLevel}";
};
mkSqlPath = prefix: suffix: "${cfg.location}/${db}${prefix}.sql${suffix}";
@ -130,16 +130,33 @@ in {
The type of compression to use on the generated database dump.
'';
};
compressionLevel = mkOption {
type = types.ints.between 1 19;
default = 6;
description = ''
The compression level used when compression is enabled.
gzip accepts levels 1 to 9. zstd accepts levels 1 to 19.
'';
};
};
};
config = mkMerge [
{
assertions = [{
assertion = cfg.backupAll -> cfg.databases == [];
message = "config.services.postgresqlBackup.backupAll cannot be used together with config.services.postgresqlBackup.databases";
}];
assertions = [
{
assertion = cfg.backupAll -> cfg.databases == [];
message = "config.services.postgresqlBackup.backupAll cannot be used together with config.services.postgresqlBackup.databases";
}
{
assertion = cfg.compression == "none" ||
(cfg.compression == "gzip" && cfg.compressionLevel >= 1 && cfg.compressionLevel <= 9) ||
(cfg.compression == "zstd" && cfg.compressionLevel >= 1 && cfg.compressionLevel <= 19);
message = "config.services.postgresqlBackup.compressionLevel must be set between 1 and 9 for gzip and 1 and 19 for zstd";
}
];
}
(mkIf cfg.enable {
systemd.tmpfiles.rules = [