nixpkgs/nixos/modules/services/amqp/rabbitmq.nix
2015-01-26 02:09:04 +01:00

139 lines
3.8 KiB
Nix

{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.services.rabbitmq;
config_file = pkgs.writeText "rabbitmq.config" cfg.config;
config_file_wo_suffix = builtins.substring 0 ((builtins.stringLength config_file) - 7) config_file;
in {
###### interface
options = {
services.rabbitmq = {
enable = mkOption {
default = false;
description = ''
Whether to enable the RabbitMQ server, an Advanced Message
Queuing Protocol (AMQP) broker.
'';
};
listenAddress = mkOption {
default = "127.0.0.1";
example = "";
description = ''
IP address on which RabbitMQ will listen for AMQP
connections. Set to the empty string to listen on all
interfaces. Note that RabbitMQ creates a user named
<literal>guest</literal> with password
<literal>guest</literal> by default, so you should delete
this user if you intend to allow external access.
'';
type = types.str;
};
port = mkOption {
default = 5672;
description = ''
Port on which RabbitMQ will listen for AMQP connections.
'';
type = types.int;
};
dataDir = mkOption {
type = types.path;
default = "/var/lib/rabbitmq";
description = ''
Data directory for rabbitmq.
'';
};
cookie = mkOption {
default = "";
type = types.str;
description = ''
Erlang cookie is a string of arbitrary length which must
be the same for several nodes to be allowed to communicate.
Leave empty to generate automatically.
'';
};
config = mkOption {
default = "";
type = types.str;
description = ''
Verbatim configuration file contents.
See http://www.rabbitmq.com/configure.htm
'';
};
plugins = mkOption {
default = [];
type = types.listOf types.str;
description = "The names of plugins to enable";
};
};
};
###### implementation
config = mkIf cfg.enable {
environment.systemPackages = [ pkgs.rabbitmq_server ];
users.extraUsers.rabbitmq = {
description = "RabbitMQ server user";
home = "${cfg.dataDir}";
createHome = true;
group = "rabbitmq";
uid = config.ids.uids.rabbitmq;
};
users.extraGroups.rabbitmq.gid = config.ids.gids.rabbitmq;
systemd.services.rabbitmq = {
description = "RabbitMQ Server";
wantedBy = [ "multi-user.target" ];
after = [ "network.target" ];
path = [ pkgs.rabbitmq_server pkgs.procps ];
environment = {
RABBITMQ_MNESIA_BASE = "${cfg.dataDir}/mnesia";
RABBITMQ_NODE_IP_ADDRESS = cfg.listenAddress;
RABBITMQ_NODE_PORT = toString cfg.port;
RABBITMQ_SERVER_START_ARGS = "-rabbit error_logger tty -rabbit sasl_error_logger false";
RABBITMQ_PID_FILE = "${cfg.dataDir}/pid";
SYS_PREFIX = "";
RABBITMQ_ENABLED_PLUGINS_FILE = pkgs.writeText "enabled_plugins" ''
[ ${concatStringsSep "," cfg.plugins} ].
'';
} // optionalAttrs (cfg.config != "") { RABBITMQ_CONFIG_FILE = config_file_wo_suffix; };
serviceConfig = {
ExecStart = "${pkgs.rabbitmq_server}/sbin/rabbitmq-server";
ExecStop = "${pkgs.rabbitmq_server}/sbin/rabbitmqctl stop";
User = "rabbitmq";
Group = "rabbitmq";
WorkingDirectory = cfg.dataDir;
};
postStart = ''
rabbitmqctl wait ${cfg.dataDir}/pid
'';
preStart = ''
${optionalString (cfg.cookie != "") ''
echo -n ${cfg.cookie} > ${cfg.dataDir}/.erlang.cookie
chmod 400 ${cfg.dataDir}/.erlang.cookie
''}
'';
};
};
}