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{ config, pkgs, ... }:
with pkgs.lib;
let
inherit (pkgs) postgresql gzip;
location = config.services.postgresqlBackup.location ;
postgresqlBackupCron = db:
''
${config.services.postgresqlBackup.period} root ${postgresql}/bin/pg_dump ${db} | ${gzip}/bin/gzip -c > ${location}/${db}.gz
'';
in
{
options = {
services.postgresqlBackup = {
enable = mkOption {
default = false;
description = ''
Whether to enable PostgreSQL dumps.
'';
};
period = mkOption {
default = "15 01 * * *";
description = ''
This option defines (in the format used by cron) when the
databases should be dumped.
The default is to update at 01:15 (at night) every day.
'';
};
databases = mkOption {
default = [];
description = ''
List of database names to dump.
'';
};
location = mkOption {
default = "/var/backup/postgresql";
description = ''
Location to put the gzipped PostgreSQL database dumps.
'';
};
};
};
config = mkIf config.services.postgresqlBackup.enable {
services.cron.systemCronJobs = map postgresqlBackupCron config.services.postgresqlBackup.databases;
system.activationScripts.postgresqlBackup = stringAfter [ "stdio" "defaultPath" "systemConfig" "users" ]
''
mkdir -m 0700 -p ${config.services.postgresqlBackup.location}
chown root ${config.services.postgresqlBackup.location}
'';
};
}
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