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|
{
lib,
config,
pkgs,
...
}:
let
inherit (lib)
types
mkDefault
mkOption
mkPackageOption
;
json = pkgs.formats.json { };
cfg = config.services.zenohd;
in
{
options = {
services.zenohd = {
enable = lib.mkEnableOption "Zenoh daemon.";
package = mkPackageOption pkgs "zenoh" { };
settings = mkOption {
description = ''
Config options for `zenoh.json5` configuration file.
See <https://github.com/eclipse-zenoh/zenoh/blob/main/DEFAULT_CONFIG.json5>
for more information.
'';
default = { };
type = types.submodule {
freeformType = json.type;
};
};
plugins = mkOption {
description = "Plugin packages to add to zenohd search paths.";
type = with types; listOf package;
default = [ ];
example = lib.literalExpression ''
[ pkgs.zenoh-plugin-mqtt ]
'';
};
backends = mkOption {
description = "Storage backend packages to add to zenohd search paths.";
type = with types; listOf package;
default = [ ];
example = lib.literalExpression ''
[ pkgs.zenoh-backend-rocksdb ]
'';
};
home = mkOption {
description = "Base directory for zenohd related files defined via ZENOH_HOME.";
type = types.str;
default = "/var/lib/zenoh";
};
env = mkOption {
description = ''
Set environment variables consumed by zenohd and its plugins.
'';
type = with types; attrsOf str;
default = { };
};
extraOptions = mkOption {
description = "Extra command line options for zenohd.";
type = with types; listOf str;
default = [ ];
};
};
};
config = lib.mkIf cfg.enable {
systemd.services.zenohd =
let
cfgFile = json.generate "zenohd.json" cfg.settings;
in
{
wantedBy = [ "multi-user.target" ];
wants = [ "network-online.target" ];
after = [ "network-online.target" ];
environment = cfg.env;
serviceConfig = {
Type = "simple";
User = "zenohd";
Group = "zenohd";
ExecStart =
"${lib.getExe cfg.package} -c ${cfgFile} " + (lib.concatStringsSep " " cfg.extraOptions);
};
};
users = {
users.zenohd = {
description = "Zenoh daemon user";
group = "zenohd";
isSystemUser = true;
};
groups.zenohd = { };
};
services.zenohd = {
env.ZENOH_HOME = cfg.home;
settings = {
plugins_loading = {
enabled = mkDefault true;
search_dirs = mkDefault (
(map (x: "${lib.getLib x}/lib") cfg.plugins) ++ [ "${lib.getLib cfg.package}/lib" ]
); # needed for internal plugins
};
plugins.storage_manager.backend_search_dirs = mkDefault (
map (x: "${lib.getLib x}/lib") cfg.backends
);
};
};
systemd.tmpfiles.rules = [ "d ${cfg.home} 750 zenohd zenohd -" ];
};
}
|
