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|
{ config, lib, pkgs, ... }:
let
inherit (builtins)
elem filter isBool isList ;
inherit (lib)
concatMapStringsSep concatStringsSep filterAttrs flatten foldAttrs foldl
mapAttrsToList mkOption optionalString ;
inherit (lib.types)
attrsOf submodule ;
concatMapAttrsSep = s: f: attrs: concatStringsSep s (mapAttrsToList f attrs);
explicit = filterAttrs (n: v: n != "_module" && v != null);
instances = explicit config.nixsap.apps.memcached;
users = mapAttrsToList (_: i: i.user) instances;
mkService = name: cfg:
let
show = n: v:
if isList v then map (s: "-${n} '${toString s}'") v
else if isBool v then (optionalString v "-${n}")
else "-${n} '${toString v}'";
args = flatten (mapAttrsToList show (explicit cfg.args));
start = pkgs.writeBashScriptBin "memcached-${name}-start" ''
set -euo pipefail
umask 0027
exec ${cfg.package}/bin/memcached \
${concatStringsSep " \\\n" args}
'';
in {
"memcached-${name}" = {
description = "memcached (${name})";
wantedBy = [ "multi-user.target" ];
after = [ "keys.target" "network.target" "local-fs.target" ];
serviceConfig = {
ExecStart = "${start}/bin/memcached-${name}-start";
Restart = "always";
User = cfg.user;
};
};
};
in {
options.nixsap.apps.memcached = mkOption {
description = "Memcached instances";
default = {};
type = attrsOf (submodule (import ./instance.nix pkgs));
};
config = {
systemd.services = foldl (a: b: a//b) {} (mapAttrsToList mkService instances);
nixsap.system.users.daemons = users;
};
}
|
