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|
{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.services.riak;
in
{
###### interface
options = {
services.riak = {
enable = mkEnableOption "riak";
package = mkOption {
type = types.package;
default = pkgs.riak;
defaultText = "pkgs.riak";
example = literalExample "pkgs.riak";
description = ''
Riak package to use.
'';
};
nodeName = mkOption {
type = types.str;
default = "riak@127.0.0.1";
description = ''
Name of the Erlang node.
'';
};
distributedCookie = mkOption {
type = types.str;
default = "riak";
description = ''
Cookie for distributed node communication. All nodes in the
same cluster should use the same cookie or they will not be able to
communicate.
'';
};
dataDir = mkOption {
type = types.path;
default = "/var/db/riak";
description = ''
Data directory for Riak.
'';
};
logDir = mkOption {
type = types.path;
default = "/var/log/riak";
description = ''
Log directory for Riak.
'';
};
extraConfig = mkOption {
type = types.lines;
default = "";
description = ''
Additional text to be appended to <filename>riak.conf</filename>.
'';
};
extraAdvancedConfig = mkOption {
type = types.lines;
default = "";
description = ''
Additional text to be appended to <filename>advanced.config</filename>.
'';
};
};
};
###### implementation
config = mkIf cfg.enable {
environment.systemPackages = [ cfg.package ];
environment.etc."riak/riak.conf".text = ''
nodename = ${cfg.nodeName}
distributed_cookie = ${cfg.distributedCookie}
platform_log_dir = ${cfg.logDir}
platform_etc_dir = /etc/riak
platform_data_dir = ${cfg.dataDir}
${cfg.extraConfig}
'';
environment.etc."riak/advanced.config".text = ''
${cfg.extraAdvancedConfig}
'';
users.users.riak = {
name = "riak";
uid = config.ids.uids.riak;
group = "riak";
description = "Riak server user";
};
users.groups.riak.gid = config.ids.gids.riak;
systemd.services.riak = {
description = "Riak Server";
wantedBy = [ "multi-user.target" ];
after = [ "network.target" ];
path = [
pkgs.utillinux # for `logger`
pkgs.bash
];
environment.HOME = "${cfg.dataDir}";
environment.RIAK_DATA_DIR = "${cfg.dataDir}";
environment.RIAK_LOG_DIR = "${cfg.logDir}";
environment.RIAK_ETC_DIR = "/etc/riak";
preStart = ''
if ! test -e ${cfg.logDir}; then
mkdir -m 0755 -p ${cfg.logDir}
chown -R riak ${cfg.logDir}
fi
if ! test -e ${cfg.dataDir}; then
mkdir -m 0700 -p ${cfg.dataDir}
chown -R riak ${cfg.dataDir}
fi
'';
serviceConfig = {
ExecStart = "${cfg.package}/bin/riak console";
ExecStop = "${cfg.package}/bin/riak stop";
StandardInput = "tty";
User = "riak";
Group = "riak";
PermissionsStartOnly = true;
# Give Riak a decent amount of time to clean up.
TimeoutStopSec = 120;
LimitNOFILE = 65536;
};
unitConfig.RequiresMountsFor = [
"${cfg.dataDir}"
"${cfg.logDir}"
"/etc/riak"
];
};
};
}
|