nixos/modules/services/misc/sourcehut/service.nix

   1 { config, pkgs, lib }:
   2 serviceCfg: serviceDrv: iniKey: attrs:
   3 let
   4   cfg = config.services.sourcehut;
   5   cfgIni = cfg.settings."${iniKey}";
   6   pgSuperUser = config.services.postgresql.superUser;
   7   statePath = "/var/lib/sourcehut/${serviceDrv.pname}";
   8 in
   9 with serviceCfg; with lib; mkMerge [
  10 {
  11   environment.HOME = statePath;
  12   after = optional (serviceDrv.pname != "metasrht" && cfg.meta.enable) "metasrht.service";
  13   requires = optional (serviceDrv.pname != "metasrht" && cfg.meta.enable) "metasrht.service";
  14   path = [ config.services.postgresql.package ];
  15   restartTriggers = [ config.environment.etc."sr.ht/config.ini".source ];
  16   serviceConfig = {
  17     Type = "simple";
  18     User = user;
  19     Group = user;
  20     Restart = "always";
  21     RestartSec = "2min";
  22     WorkingDirectory = statePath;
  23     StateDirectory = [ "sourcehut/${serviceDrv.pname}" ];
  24   };
  25
  26   preStart = mkBefore ''
  27     if ! test -e ${statePath}/db; then
  28       # Setup the initial database
  29       ${cfg.python}/bin/python <<EOF
  30     from ${serviceDrv.pname}.app import db
  31     db.create()
  32     EOF
  33
  34       # Set the initial state of the database for future database upgrades
  35       if test -e ${cfg.python}/bin/${serviceDrv.pname}-migrate; then
  36         # Run alembic stamp head once to tell alembic the schema is up-to-date
  37         ${cfg.python}/bin/${serviceDrv.pname}-migrate stamp head
  38       fi
  39
  40       printf "%s" "${serviceDrv.version}" > ${statePath}/db
  41     fi
  42
  43     # Update copy of each users' profile to the latest
  44     # See https://lists.sr.ht/~sircmpwn/sr.ht-admins/<20190302181207.GA13778%40cirno.my.domain>
  45     if ! test -e ${statePath}/webhook; then
  46       # Update ${iniKey}'s users' profile copy to the latest
  47       ${cfg.python}/bin/srht-update-profiles ${iniKey}
  48
  49       touch ${statePath}/webhook
  50     fi
  51
  52     ${optionalString cfgIni.migrate-on-upgrade ''
  53       if [ "$(cat ${statePath}/db)" != "${serviceDrv.version}" ]; then
  54         # Manage schema migrations using alembic
  55         ${cfg.python}/bin/${serviceDrv.pname}-migrate -a upgrade head
  56
  57         # Mark down current package version
  58         printf "%s" "${serviceDrv.version}" > ${statePath}/db
  59       fi
  60     ''}
  61   '';
  62 }
  63 attrs
  64 ]