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# Workadventure NixOS module.
{ config, lib, pkgs, ... }:
with lib;
let
instances = config.services.workadventure;
urls = instanceConfig: if instanceConfig.nginx.domain != null then {
api = instanceConfig.nginx.domain + instanceConfig.frontend.urls.api;
uploader = instanceConfig.nginx.domain + instanceConfig.frontend.urls.uploader;
admin = instanceConfig.nginx.domain + instanceConfig.frontend.urls.admin;
maps = instanceConfig.nginx.domain + instanceConfig.frontend.urls.maps;
} else instanceConfig.urls;
envCommonConfig = instanceConfig: with instanceConfig; {
SECRET_KEY = commonConfig.secretKey;
MINIMUM_DISTANCE = toString commonConfig.minimumDistance;
GROUP_RADIUS = toString commonConfig.groupRadius;
ALLOW_ARTILLERY = if commonConfig.allowArtillery then "true" else "false";
MAX_USERS_PER_ROOM = toString commonConfig.maxUsersPerRoom;
CPU_OVERHEAT_THRESHOLD = toString commonConfig.cpuOverheatThreshold;
JITSI_URL = commonConfig.jitsi.url;
JITSI_ISS = commonConfig.jitsi.iss;
SECRET_JITSI_KEY = commonConfig.jitsi.secretKey;
SOCKET_IDLE_TIME = toString commonConfig.socketIdleTime;
};
servicesBack = mapAttrs' (instanceName: instanceConfig: {
name = "wa-back-${instanceName}";
value = mkIf instanceConfig.backend.enable {
description = "WorkAdventure backend ${instanceName}";
wantedBy = [ "multi-user.target" ];
after = [ "network.target" ];
# Hack to get node-grpc-precompiled to work on NixOS by adding getconf to
# $PATH.
#
# It uses node-pre-gyp which attempts to select the right native module
# via npmjs.com/package/detect-libc, which says 'yep, it's glibc' as long
# as `getconf GNU_LIBC_VERSION` returns something sensible. This happens
# during the build process (as stdenv.mkDerivation has enough of a glibc
# dev env to make it work) but doesn't happen on production deployments
# in which the environment is much more limited. This is regardless of
# actual glibc ABI presence wrt. to /nix/store vs. /usr/lib64 paths.
#
# This should be fixed in workadventure-nix.
path = [
pkgs.getconf
];
environment = {
HTTP_PORT = toString instanceConfig.backend.httpPort;
GRPC_PORT = toString instanceConfig.backend.grpcPort;
} // envCommonConfig instanceConfig;
serviceConfig = {
User = "workadventure-backend";
Group = "workadventure-backend";
DynamicUser = true; # Note: this implies a lot of other security features.
ExecStart = "${instanceConfig.backend.package}/bin/workadventureback";
Restart = "always";
RestartSec = "10s";
};
};
}
) instances;
servicesPusher = mapAttrs' (instanceName: instanceConfig:
{
name = "wa-pusher-${instanceName}";
value = mkIf instanceConfig.pusher.enable {
description = "WorkAdventure pusher ${instanceName}";
wantedBy = [ "multi-user.target" ];
after = [ "network.target" ];
path = [
pkgs.getconf
];
environment = {
PUSHER_HTTP_PORT = toString instanceConfig.pusher.port;
API_URL = "localhost:${toString instanceConfig.backend.grpcPort}";
} // envCommonConfig instanceConfig;
serviceConfig = {
User = "workadventure-pusher";
Group = "workadventure-pusher";
DynamicUser = true;
ExecStart = "${instanceConfig.pusher.package}/bin/workadventurepusher";
Restart = "always";
RestartSec = "10s";
};
};
}
) instances;
frontPackage = mapAttrs (instanceName: instanceConfig:
let fc = instanceConfig.frontend;
cc = instanceConfig.commonConfig;
in
fc.package.override {
environment = {
DEBUG_MODE = if fc.debugMode then "true" else "false"; # toString bool behaves weird
START_ROOM_URL = fc.startRoomUrl;
STUN_SERVER = cc.webrtc.stun.url;
TURN_SERVER = cc.webrtc.turn.url;
TURN_USER = cc.webrtc.turn.user;
TURN_PASSWORD = cc.webrtc.turn.password;
JITSI_URL = cc.jitsi.url;
JITSI_PRIVATE_MODE = if cc.jitsi.privateMode then "true" else "false";
API_URL = (urls instanceConfig).api;
UPDLOADER_URL = (urls instanceConfig).uploader;
ADMIN_URL = (urls instanceConfig).admin;
MAPS_URL = (urls instanceConfig).maps;
RESOLUTION = fc.resolution;
ZOOM_LEVEL = fc.zoomLevel;
POSITION_DELAY = fc.positionDelay;
MAX_EXTRAPOLATION_TIME = fc.maxExtrapolationTime;
};
}
) instances;
virtualHosts = mapAttrs (instanceName: instanceConfig:
mkIf instanceConfig.nginx.enable {
default = instanceConfig.nginx.default;
serverName = instanceConfig.nginx.domain;
root = frontPackage.${instanceName} + "/dist";
locations = {
"/_/" = {
tryFiles = "/index.html =404";
};
"/pusher/" = {
#proxyPass = "http://10.233.3.1:9000";
proxyPass = "http://localhost:${toString instanceConfig.pusher.port}/";
proxyWebsockets = true;
};
"/maps/" = mkIf instanceConfig.nginx.maps.serve {
alias = instanceConfig.nginx.maps.path;
};
};
}
) instances;
in
{
options = {
services.workadventure = mkOption {
type = types.attrsOf (types.submodule (import ./instance-options.nix {
inherit config lib;
pkgs = import ./wapkgs.nix {inherit pkgs lib;};
}));
default = {};
description = "Declarative WorkAdventure instance config";
};
};
config = {
systemd.services = servicesBack // servicesPusher;
services.nginx = mkIf (virtualHosts != {}) {
inherit virtualHosts;
enable = mkDefault true;
};
};
}
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