modules/private/databases/utils.nix

   1 { pkgs }:
   2 {
   3   keepLastNDumps = ext: backupDir: n: ''
   4     #!${pkgs.stdenv.shell}
   5
   6     cd ${backupDir}
   7     ${pkgs.coreutils}/bin/rm -f \
   8       $(${pkgs.coreutils}/bin/ls -1 *.${ext} \
   9         | ${pkgs.coreutils}/bin/sort -r \
  10         | ${pkgs.gnused}/bin/sed -e '1,${builtins.toString n}d')
  11     '';
  12   exponentialDumps = ext: backupDir: let
  13     log2rotateSrc = builtins.fetchGit {
  14       url = "https://github.com/avian2/pylog2rotate";
  15       ref = "master";
  16       rev = "061f0564757289d3bea553b16f8fd5c4a0319c5e";
  17     };
  18     log2rotate = pkgs.writeScript "log2rotate" ''
  19       #!${pkgs.python3}/bin/python
  20
  21       ${builtins.readFile "${log2rotateSrc}/log2rotate.py"}
  22     '';
  23   in ''
  24     #!${pkgs.stdenv.shell}
  25
  26     cd ${backupDir}
  27     ${pkgs.coreutils}/bin/rm -f $(ls -1 *.${ext} | grep -v 'T22:' | sort -r | sed -e '1,12d')
  28     ${pkgs.coreutils}/bin/rm -f $(ls -1 *T22*.${ext} | ${log2rotate} --skip 7 --fuzz 7 --delete --format='%Y-%m-%dT%H:%M+00:00.${ext}')
  29     '';
  30 }