nixos/restic: add backup{Prepare,Cleanup}Command options
The backupPrepareCommand and backupCleanupCommand options offer a way to run a script to prepare for backup and then cleanup it once finish. Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
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2 changed files with 44 additions and 4 deletions
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@ -206,6 +206,22 @@ in
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'';
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example = "find /home/matt/git -type d -name .git";
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};
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backupPrepareCommand = mkOption {
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type = with types; nullOr str;
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default = null;
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description = ''
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A script that must run before starting the backup process.
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'';
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};
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backupCleanupCommand = mkOption {
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type = with types; nullOr str;
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default = null;
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description = ''
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A script that must run after finishing the backup process.
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'';
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};
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};
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}));
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default = { };
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@ -283,8 +299,11 @@ in
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} // optionalAttrs (backup.environmentFile != null) {
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EnvironmentFile = backup.environmentFile;
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};
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} // optionalAttrs (backup.initialize || backup.dynamicFilesFrom != null) {
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} // optionalAttrs (backup.initialize || backup.dynamicFilesFrom != null || backup.backupPrepareCommand != null) {
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preStart = ''
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${optionalString (backup.backupPrepareCommand != null) ''
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${pkgs.writeScript "backupPrepareCommand" backup.backupPrepareCommand}
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''}
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${optionalString (backup.initialize) ''
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${resticCmd} snapshots || ${resticCmd} init
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''}
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@ -292,9 +311,14 @@ in
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${pkgs.writeScript "dynamicFilesFromScript" backup.dynamicFilesFrom} > ${filesFromTmpFile}
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''}
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'';
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} // optionalAttrs (backup.dynamicFilesFrom != null) {
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} // optionalAttrs (backup.dynamicFilesFrom != null || backup.backupCleanupCommand != null) {
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postStart = ''
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rm ${filesFromTmpFile}
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${optionalString (backup.backupCleanupCommand != null) ''
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${pkgs.writeScript "backupCleanupCommand" backup.backupCleanupCommand}
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''}
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${optionalString (backup.dynamicFilesFrom != null) ''
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rm ${filesFromTmpFile}
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''}
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'';
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})
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)
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@ -7,6 +7,16 @@ import ./make-test-python.nix (
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repositoryFile = "${pkgs.writeText "repositoryFile" "/tmp/restic-backup-from-file"}";
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rcloneRepository = "rclone:local:/tmp/restic-rclone-backup";
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backupPrepareCommand = ''
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touch /opt/backupPrepareCommand
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test ! -e /opt/backupCleanupCommand
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'';
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backupCleanupCommand = ''
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rm /opt/backupPrepareCommand
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touch /opt/backupCleanupCommand
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'';
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passwordFile = "${pkgs.writeText "password" "correcthorsebatterystaple"}";
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initialize = true;
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paths = [ "/opt" ];
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@ -30,7 +40,7 @@ import ./make-test-python.nix (
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{
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services.restic.backups = {
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remotebackup = {
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inherit repository passwordFile initialize paths pruneOpts;
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inherit repository passwordFile initialize paths pruneOpts backupPrepareCommand backupCleanupCommand;
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};
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remotebackup-from-file = {
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inherit repositoryFile passwordFile initialize paths pruneOpts;
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@ -73,6 +83,7 @@ import ./make-test-python.nix (
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"mkdir -p /tmp/restic-rclone-backup",
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"timedatectl set-time '2016-12-13 13:45'",
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"systemctl start restic-backups-remotebackup.service",
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"rm /opt/backupCleanupCommand",
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"systemctl start restic-backups-remotebackup-from-file.service",
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"systemctl start restic-backups-rclonebackup.service",
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'${pkgs.restic}/bin/restic -r ${repository} -p ${passwordFile} snapshots -c | grep -e "^1 snapshot"',
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@ -80,18 +91,23 @@ import ./make-test-python.nix (
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'${pkgs.restic}/bin/restic -r ${rcloneRepository} -p ${passwordFile} snapshots -c | grep -e "^1 snapshot"',
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"timedatectl set-time '2017-12-13 13:45'",
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"systemctl start restic-backups-remotebackup.service",
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"rm /opt/backupCleanupCommand",
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"systemctl start restic-backups-rclonebackup.service",
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"timedatectl set-time '2018-12-13 13:45'",
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"systemctl start restic-backups-remotebackup.service",
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"rm /opt/backupCleanupCommand",
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"systemctl start restic-backups-rclonebackup.service",
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"timedatectl set-time '2018-12-14 13:45'",
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"systemctl start restic-backups-remotebackup.service",
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"rm /opt/backupCleanupCommand",
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"systemctl start restic-backups-rclonebackup.service",
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"timedatectl set-time '2018-12-15 13:45'",
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"systemctl start restic-backups-remotebackup.service",
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"rm /opt/backupCleanupCommand",
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"systemctl start restic-backups-rclonebackup.service",
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"timedatectl set-time '2018-12-16 13:45'",
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"systemctl start restic-backups-remotebackup.service",
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"rm /opt/backupCleanupCommand",
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"systemctl start restic-backups-rclonebackup.service",
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'${pkgs.restic}/bin/restic -r ${repository} -p ${passwordFile} snapshots -c | grep -e "^4 snapshot"',
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'${pkgs.restic}/bin/restic -r ${rcloneRepository} -p ${passwordFile} snapshots -c | grep -e "^4 snapshot"',
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