nixpkgs/nixos/modules/services/networking/mfi.nix
2016-04-22 22:43:45 -07:00

101 lines
3.2 KiB
Nix

{ config, lib, pkgs, utils, ... }:
with lib;
let
name = "Ubiquiti mFi Controller";
cfg = config.services.mfi;
stateDir = "/var/lib/mfi";
# XXX 2 runtime exceptions using jre8: JSPException on GET / ; can't initialize ./data/keystore on first run.
cmd = "@${pkgs.jre7}/bin/java java -jar ${stateDir}/lib/ace.jar";
mountPoints = [
{ what = "${pkgs.mfi}/dl"; where = "${stateDir}/dl"; }
{ what = "${pkgs.mfi}/lib"; where = "${stateDir}/lib"; }
{ what = "${pkgs.mongodb248}/bin"; where = "${stateDir}/bin"; }
{ what = "${cfg.dataDir}"; where = "${stateDir}/data"; }
];
systemdMountPoints = map (m: "${utils.escapeSystemdPath m.where}.mount") mountPoints;
ports = [ 6080 6880 6443 6843 ];
in
{
options = {
services.mfi = {
enable = mkEnableOption name;
openPorts = mkOption {
type = types.bool;
default = true;
description = "Whether to open TCP ports ${concatMapStrings (a: "${toString a} ") ports}for the services.";
};
dataDir = mkOption {
type = types.str;
default = "${stateDir}/data";
description = ''
Where to store the database and other data.
This directory will be bind-mounted to ${stateDir}/data as part of the service startup.
'';
};
};
};
config = mkIf cfg.enable {
networking.firewall.allowedTCPPorts = mkIf config.services.mfi.openPorts ports;
users.users.mfi = {
uid = config.ids.uids.mfi;
description = "mFi controller daemon user";
home = "${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 = [ "mfi.service" ];
partOf = [ "mfi.service" ];
unitConfig.RequiresMountsFor = stateDir;
options = "bind";
what = what;
where = where;
}) mountPoints;
systemd.services.mfi = {
description = "mFi controller daemon";
wantedBy = [ "multi-user.target" ];
after = [ "network.target" ] ++ systemdMountPoints;
partOf = systemdMountPoints;
bindsTo = systemdMountPoints;
unitConfig.RequiresMountsFor = stateDir;
preStart = ''
# Clear ./webapps each run.
rm -rf "${stateDir}/webapps"
mkdir -p "${stateDir}/webapps"
ln -s "${pkgs.mfi}/webapps/ROOT.war" "${stateDir}/webapps"
# Copy initial config only once.
test -e "${stateDir}/conf" || cp -ar "${pkgs.mfi}/conf" "${stateDir}/conf"
test -e "${stateDir}/data" || cp -ar "${pkgs.mfi}/data" "${stateDir}/data"
# Fix Permissions.
# (Bind-mounts cause errors; ignore exit codes)
chown -fR mfi: "${stateDir}" || true
chmod -fR u=rwX,go= "${stateDir}" || true
'';
postStop = ''
rm -rf "${stateDir}/webapps"
'';
serviceConfig = {
Type = "simple";
ExecStart = "${cmd} start";
ExecStop = "${cmd} stop";
User = "mfi";
PermissionsStartOnly = true;
UMask = "0077";
WorkingDirectory = "${stateDir}";
};
};
};
}