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nixos: improve config loading for syndicate-server 

Use an intermediary configuration file to allow configuration
reloading.
This commit is contained in:
Emery Hemingway 2022-06-26 09:25:20 -05:00
parent b7bf10234d
commit 327de24ea7
1 changed files with 56 additions and 45 deletions
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101
nixos/syndicate-server.nix
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@ -46,51 +46,62 @@ with lib;
config = {
systemd.services = lib.attrsets.mapAttrs' (name: cfg: {
name = "syndicate-${name}";
value = let
flags = lib.strings.concatMapStrings (c: " --config ${c}") cfg.config;
serviceConfig = {
ExecStart =
"${cfg.package}/bin/syndicate-server --no-banner ${flags}";
User = cfg.user;
};
in if builtins.match "tty[0-9]" name != null then {
enable = true;
description = "Syndicate dataspace server";
after = [
"systemd-user-sessions.service"
"systemd-logind.service"
"getty@${name}.service"
];
before = [ "graphical.target" ];
wants = [ "dbus.socket" "systemd-logind.service" ];
wantedBy = [ "graphical.target" ];
conflicts = [ "getty@${name}.service" ];
restartIfChanged = false;
unitConfig.ConditionPathExists = "/dev/${name}";
serviceConfig = serviceConfig // {
PAMName = "login";
StandardError = "journal";
StandardInput = "tty-fail";
StandardOutput = "journal";
TTYPath = "/dev/${name}";
TTYReset = "yes";
TTYVHangup = "yes";
TTYVTDisallocate = "yes";
UtmpIdentifier = "%n";
UtmpMode = "user";
WorkingDirectory = "~";
};
} else {
description = "Syndicate dataspace server";
wantedBy = [ "multi-user.target" ];
inherit serviceConfig;
};
})
(lib.attrsets.filterAttrs (_: cfg: cfg.enable) config.services.syndicate);
systemd.services = let
serverCfgs =
lib.attrsets.filterAttrs (_: cfg: cfg.enable) config.services.syndicate;
in builtins.listToAttrs (lib.lists.flatten (lib.attrsets.mapAttrsToList
(name: cfg:
let
configFileName = ".syndicate-nixos-config.pr";
configFile = pkgs.writeText configFileName
(lib.strings.concatMapStrings (dir: ''
<require-service <config-watcher "${dir}" $.>>
'') cfg.config);
in [{
name = "syndicate-${name}";
value = let
serviceConfig = let
linkConfig =
"${pkgs.coreutils}/bin/ln -sf ${configFile} ${configFileName}";
in {
ExecStartPre = linkConfig;
ExecStart =
"${cfg.package}/bin/syndicate-server --no-banner --config ${configFileName}";
ExecReload = linkConfig;
User = cfg.user;
};
in {
description = "Syndicate dataspace server";
restartIfChanged = false;
reloadTriggers = [ configFile ];
wantedBy = [ "multi-user.target" ];
} // (if builtins.match "tty[0-9]" name == null then {
inherit serviceConfig;
} else {
after = [
"systemd-user-sessions.service"
"systemd-logind.service"
"getty@${name}.service"
];
wants = [ "dbus.socket" "systemd-logind.service" ];
conflicts = [ "getty@${name}.service" ];
unitConfig.ConditionPathExists = "/dev/${name}";
serviceConfig = serviceConfig // {
PAMName = "login";
StandardError = "journal";
StandardInput = "tty-fail";
StandardOutput = "journal";
TTYPath = "/dev/${name}";
TTYReset = "yes";
TTYVHangup = "yes";
TTYVTDisallocate = "yes";
UtmpIdentifier = "%n";
UtmpMode = "user";
WorkingDirectory = "~";
};
});
}]) (lib.attrsets.filterAttrs (_: cfg: cfg.enable)
config.services.syndicate)));
systemd.targets.multi-user.wants = lib.lists.flatten
(lib.attrsets.mapAttrsToList