nixpkgs/nixos/modules/services/web-servers/winstone.nix
Eelco Dolstra 29027fd1e1 Rewrite ‘with pkgs.lib’ -> ‘with lib’
Using pkgs.lib on the spine of module evaluation is problematic
because the pkgs argument depends on the result of module
evaluation. To prevent an infinite recursion, pkgs and some of the
modules are evaluated twice, which is inefficient. Using ‘with lib’
prevents this problem.
2014-04-14 16:26:48 +02:00

130 lines
3 KiB
Nix

{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.services.winstone;
winstoneOpts = { name, ... }: {
options = {
name = mkOption {
default = name;
internal = true;
};
serviceName = mkOption {
type = types.str;
description = ''
The name of the systemd service. By default, it is
derived from the winstone instance name.
'';
};
warFile = mkOption {
type = types.str;
description = ''
The WAR file that Winstone should serve.
'';
};
javaPackage = mkOption {
type = types.package;
default = pkgs.openjre;
description = ''
Which Java derivation to use for running Winstone.
'';
};
user = mkOption {
type = types.str;
description = ''
The user that should run this Winstone process and
own the working directory.
'';
};
group = mkOption {
type = types.str;
description = ''
The group that will own the working directory.
'';
};
workDir = mkOption {
type = types.str;
description = ''
The working directory for this Winstone instance. Will
contain extracted webapps etc. The directory will be
created if it doesn't exist.
'';
};
extraJavaOptions = mkOption {
type = types.listOf types.str;
default = [];
description = ''
Extra command line options given to the java process running
Winstone.
'';
};
extraOptions = mkOption {
type = types.listOf types.str;
default = [];
description = ''
Extra command line options given to the Winstone process.
'';
};
};
config = {
workDir = mkDefault "/run/winstone/${name}";
serviceName = mkDefault "winstone-${name}";
};
};
mkService = cfg: let
opts = concatStringsSep " " (cfg.extraOptions ++ [
"--warfile ${cfg.warFile}"
]);
javaOpts = concatStringsSep " " (cfg.extraJavaOptions ++ [
"-Djava.io.tmpdir=${cfg.workDir}"
"-jar ${pkgs.winstone}/lib/winstone.jar"
]);
in {
wantedBy = [ "multi-user.target" ];
description = "winstone service for ${cfg.name}";
preStart = ''
mkdir -p "${cfg.workDir}"
chown ${cfg.user}:${cfg.group} "${cfg.workDir}"
'';
serviceConfig = {
ExecStart = "${cfg.javaPackage}/bin/java ${javaOpts} ${opts}";
User = cfg.user;
PermissionsStartOnly = true;
};
};
in {
options = {
services.winstone = mkOption {
default = {};
type = types.attrsOf types.optionSet;
options = [ winstoneOpts ];
description = ''
Defines independent Winstone services, each serving one WAR-file.
'';
};
};
config = mkIf (cfg != {}) {
systemd.services = mapAttrs' (n: c: nameValuePair c.serviceName (mkService c)) cfg;
};
}