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     WorkingDirectory = statePath;
  22     StateDirectory = [ "sourcehut/${serviceDrv.pname}" ];
  23   };
  24
  25   preStart = mkBefore ''
  26     if ! test -e ${statePath}/db; then
  27       # Setup the initial database
  28       ${cfg.python}/bin/python <<EOF
  29     from ${serviceDrv.pname}.app import db
  30     db.create()
  31     EOF
  32
  33       # Set the initial state of the database for future database upgrades
  34       if test -e ${cfg.python}/bin/${serviceDrv.pname}-migrate; then
  35         # Run alembic stamp head once to tell alembic the schema is up-to-date
  36         ${cfg.python}/bin/${serviceDrv.pname}-migrate stamp head
  37       fi
  38
  39       printf "%s" "${serviceDrv.version}" > ${statePath}/db
  40     fi
  41
  42     # Update copy of each users' profile to the latest
  43     # See https://lists.sr.ht/~sircmpwn/sr.ht-admins/<20190302181207.GA13778%40cirno.my.domain>
  44     if ! test -e ${statePath}/webhook; then
  45       # Update ${iniKey}'s users' profile copy to the latest
  46       ${cfg.python}/bin/srht-update-profiles ${iniKey}
  47
  48       touch ${statePath}/webhook
  49     fi
  50
  51     ${optionalString cfgIni.migrate-on-upgrade ''
  52       if [ "$(cat ${statePath}/db)" != "${serviceDrv.version}" ]; then
  53         # Manage schema migrations using alembic
  54         ${cfg.python}/bin/${serviceDrv.pname}-migrate -a upgrade head
  55
  56         # Mark down current package version
  57         printf "%s" "${serviceDrv.version}" > ${statePath}/db
  58       fi
  59     ''}
  60   '';
  61 }
  62 attrs
  63 ]