nixpkgs/nixos/modules/services/networking/unifi.nix
2016-04-22 22:43:55 -07:00

111 lines
2.8 KiB
Nix

{ config, lib, pkgs, utils, ... }:
with lib;
let
cfg = config.services.unifi;
stateDir = "/var/lib/unifi";
cmd = "@${pkgs.jre}/bin/java java -jar ${stateDir}/lib/ace.jar";
mountPoints = [
{
what = "${pkgs.unifi}/dl";
where = "${stateDir}/dl";
}
{
what = "${pkgs.unifi}/lib";
where = "${stateDir}/lib";
}
{
what = "${pkgs.mongodb}/bin";
where = "${stateDir}/bin";
}
{
what = "${cfg.dataDir}";
where = "${stateDir}/data";
}
];
systemdMountPoints = map (m: "${utils.escapeSystemdPath m.where}.mount") mountPoints;
in
{
options = {
services.unifi.enable = mkOption {
type = types.bool;
default = false;
description = ''
Whether or not to enable the unifi controller service.
'';
};
services.unifi.dataDir = mkOption {
type = types.str;
default = "${stateDir}/data";
description = ''
Where to store the database and other data.
This directory will be bind-mounted to ${stateDir}/data as part of the service startup.
'';
};
};
config = mkIf cfg.enable {
users.extraUsers.unifi = {
uid = config.ids.uids.unifi;
description = "UniFi controller daemon user";
home = "${stateDir}";
};
# We must create the binary directories as bind mounts instead of symlinks
# This is because the controller resolves all symlinks to absolute paths
# to be used as the working directory.
systemd.mounts = map ({ what, where }: {
bindsTo = [ "unifi.service" ];
partOf = [ "unifi.service" ];
unitConfig.RequiresMountsFor = stateDir;
options = "bind";
what = what;
where = where;
}) mountPoints;
systemd.services.unifi = {
description = "UniFi controller daemon";
wantedBy = [ "multi-user.target" ];
after = [ "network.target" ] ++ systemdMountPoints;
partOf = systemdMountPoints;
bindsTo = systemdMountPoints;
unitConfig.RequiresMountsFor = stateDir;
# This a HACK to fix missing dependencies of dynamic libs extracted from jars
environment.LD_LIBRARY_PATH = with pkgs.stdenv; "${cc.cc.lib}/lib";
preStart = ''
# Ensure privacy of state
chown unifi "${stateDir}"
chmod 0700 "${stateDir}"
# Create the volatile webapps
rm -rf "${stateDir}/webapps"
mkdir -p "${stateDir}/webapps"
chown unifi "${stateDir}/webapps"
ln -s "${pkgs.unifi}/webapps/ROOT" "${stateDir}/webapps/ROOT"
'';
postStop = ''
rm -rf "${stateDir}/webapps"
'';
serviceConfig = {
Type = "simple";
ExecStart = "${cmd} start";
ExecStop = "${cmd} stop";
User = "unifi";
PermissionsStartOnly = true;
UMask = "0077";
WorkingDirectory = "${stateDir}";
};
};
};
}