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{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.services.scion.scion-dispatcher;
toml = pkgs.formats.toml { };
defaultConfig = {
dispatcher = {
id = "dispatcher";
socket_file_mode = "0770";
application_socket = "/dev/shm/dispatcher/default.sock";
};
log.console = {
level = "info";
};
};
configFile = toml.generate "scion-dispatcher.toml" (defaultConfig // cfg.settings);
in
{
options.services.scion.scion-dispatcher = {
enable = mkEnableOption (lib.mdDoc "the scion-dispatcher service");
settings = mkOption {
default = { };
type = toml.type;
example = literalExpression ''
{
dispatcher = {
id = "dispatcher";
socket_file_mode = "0770";
application_socket = "/dev/shm/dispatcher/default.sock";
};
log.console = {
level = "info";
};
}
'';
description = lib.mdDoc ''
scion-dispatcher configuration. Refer to
<https://docs.scion.org/en/latest/manuals/common.html>
for details on supported values.
'';
};
};
config = mkIf cfg.enable {
# Needed for group ownership of the dispatcher socket
users.groups.scion = {};
# scion programs hardcode path to dispatcher in /run/shm, and is not
# configurable at runtime upstream plans to obsolete the dispatcher in
# favor of an SCMP daemon, at which point this can be removed.
system.activationScripts.scion-dispatcher = ''
ln -sf /dev/shm /run/shm
'';
systemd.services.scion-dispatcher = {
description = "SCION Dispatcher";
after = [ "network-online.target" ];
wants = [ "network-online.target" ];
wantedBy = [ "multi-user.target" ];
serviceConfig = {
Type = "simple";
Group = "scion";
DynamicUser = true;
BindPaths = [ "/dev/shm:/run/shm" ];
ExecStartPre = "${pkgs.coreutils}/bin/rm -rf /run/shm/dispatcher";
ExecStart = "${pkgs.scion}/bin/scion-dispatcher --config ${configFile}";
Restart = "on-failure";
StateDirectory = "scion-dispatcher";
};
};
};
}
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