depot/third_party/nixpkgs/nixos/modules/services/network-filesystems/eris-server.nix
Default email e7ec2969af Project import generated by Copybara.
GitOrigin-RevId: 9b19f5e77dd906cb52dade0b7bd280339d2a1f3d
2024-01-13 09:15:51 +01:00

115 lines
3.5 KiB
Nix

{ config, lib, pkgs, ... }:
let
cfg = config.services.eris-server;
stateDirectoryPath = "\${STATE_DIRECTORY}";
nullOrStr = with lib.types; nullOr str;
in {
options.services.eris-server = {
enable = lib.mkEnableOption "an ERIS server";
package = lib.mkOption {
type = lib.types.package;
default = pkgs.eris-go;
defaultText = lib.literalExpression "pkgs.eris-go";
description = "Package to use for the ERIS server.";
};
decode = lib.mkOption {
type = lib.types.bool;
default = false;
description = ''
Whether the HTTP service (when enabled) will decode ERIS content at /uri-res/N2R?urn:eris:.
Enabling this is recommended only for private or local-only servers.
'';
};
listenCoap = lib.mkOption {
type = nullOrStr;
default = ":5683";
example = "[::1]:5683";
description = ''
Server CoAP listen address. Listen on all IP addresses at port 5683 by default.
Please note that the server can service client requests for ERIS-blocks by
querying other clients connected to the server. Whether or not blocks are
relayed back to the server depends on client configuration but be aware this
may leak sensitive metadata and trigger network activity.
'';
};
listenHttp = lib.mkOption {
type = nullOrStr;
default = null;
example = "[::1]:8080";
description = "Server HTTP listen address. Do not listen by default.";
};
backends = lib.mkOption {
type = with lib.types; listOf str;
description = ''
List of backend URLs.
Add "get" and "put" as query elements to enable those operations.
'';
example = [
"bolt+file:///srv/eris.bolt?get&put"
"coap+tcp://eris.example.com:5683?get"
];
};
mountpoint = lib.mkOption {
type = nullOrStr;
default = null;
example = "/eris";
description = ''
Mountpoint for FUSE namespace that exposes "urn:eris:" files.
'';
};
};
config = lib.mkIf cfg.enable {
assertions = [{
assertion = lib.strings.versionAtLeast cfg.package.version "20231219";
message =
"Version of `config.services.eris-server.package` is incompatible with this module";
}];
systemd.services.eris-server = let
cmd = "${cfg.package}/bin/eris-go server"
+ (lib.optionalString (cfg.listenCoap != null)
" --coap '${cfg.listenCoap}'")
+ (lib.optionalString (cfg.listenHttp != null)
" --http '${cfg.listenHttp}'")
+ (lib.optionalString cfg.decode " --decode")
+ (lib.optionalString (cfg.mountpoint != null)
" --mountpoint '${cfg.mountpoint}'");
in {
description = "ERIS block server";
after = [ "network.target" ];
wantedBy = [ "multi-user.target" ];
environment.ERIS_STORE_URL = toString cfg.backends;
script = lib.mkIf (cfg.mountpoint != null) ''
export PATH=${config.security.wrapperDir}:$PATH
${cmd}
'';
serviceConfig = let
umounter = lib.mkIf (cfg.mountpoint != null)
"-${config.security.wrapperDir}/fusermount -uz ${cfg.mountpoint}";
in if (cfg.mountpoint == null) then {
ExecStart = cmd;
} else
{
ExecStartPre = umounter;
ExecStopPost = umounter;
} // {
Restart = "always";
RestartSec = 20;
AmbientCapabilities = "CAP_NET_BIND_SERVICE";
};
};
};
meta.maintainers = with lib.maintainers; [ ehmry ];
}