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nixos/postgresql-backup: allow setting compression level

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This commit is contained in:
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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25
nixos/modules/services/backup/postgresql-backup.nix
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@@ -17,8 +17,8 @@ let
compressCmd = getAttr cfg.compression { compressCmd = getAttr cfg.compression {
"none" = "cat"; "none" = "cat";
"gzip" = "${pkgs.gzip}/bin/gzip -c"; "gzip" = "${pkgs.gzip}/bin/gzip -c -${toString cfg.compressionLevel}";
"zstd" = "${pkgs.zstd}/bin/zstd -c"; "zstd" = "${pkgs.zstd}/bin/zstd -c -${toString cfg.compressionLevel}";
}; };
mkSqlPath = prefix: suffix: "${cfg.location}/${db}${prefix}.sql${suffix}"; 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. 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 [ config = mkMerge [
{ {
assertions = [{ assertions = [
{
assertion = cfg.backupAll -> cfg.databases == []; assertion = cfg.backupAll -> cfg.databases == [];
message = "config.services.postgresqlBackup.backupAll cannot be used together with config.services.postgresqlBackup.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 { (mkIf cfg.enable {
systemd.tmpfiles.rules = [ systemd.tmpfiles.rules = [