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{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.services.alerta;
alertaConf = pkgs.writeTextFile {
name = "alertad.conf";
text = ''
DATABASE_URL = '${cfg.databaseUrl}'
DATABASE_NAME = '${cfg.databaseName}'
LOG_FILE = '${cfg.logDir}/alertad.log'
LOG_FORMAT = '%(asctime)s - %(name)s - %(levelname)s - %(message)s'
CORS_ORIGINS = [ ${concatMapStringsSep ", " (s: "\"" + s + "\"") cfg.corsOrigins} ];
AUTH_REQUIRED = ${if cfg.authenticationRequired then "True" else "False"}
SIGNUP_ENABLED = ${if cfg.signupEnabled then "True" else "False"}
${cfg.extraConfig}
'';
};
in
{
options.services.alerta = {
enable = mkEnableOption "alerta";
port = mkOption {
type = types.int;
default = 5000;
description = "Port of Alerta";
};
bind = mkOption {
type = types.str;
default = "0.0.0.0";
description = "Address to bind to. The default is to bind to all addresses";
};
logDir = mkOption {
type = types.path;
description = "Location where the logfiles are stored";
default = "/var/log/alerta";
};
databaseUrl = mkOption {
type = types.str;
description = "URL of the MongoDB or PostgreSQL database to connect to";
default = "mongodb://localhost";
};
databaseName = mkOption {
type = types.str;
description = "Name of the database instance to connect to";
default = "monitoring";
};
corsOrigins = mkOption {
type = types.listOf types.str;
description = "List of URLs that can access the API for Cross-Origin Resource Sharing (CORS)";
default = [ "http://localhost" "http://localhost:5000" ];
};
authenticationRequired = mkOption {
type = types.bool;
description = "Whether users must authenticate when using the web UI or command-line tool";
default = false;
};
signupEnabled = mkOption {
type = types.bool;
description = "Whether to prevent sign-up of new users via the web UI";
default = true;
};
extraConfig = mkOption {
description = "These lines go into alertad.conf verbatim.";
default = "";
type = types.lines;
};
};
config = mkIf cfg.enable {
systemd.tmpfiles.rules = [
"d '${cfg.logDir}' - alerta alerta - -"
];
systemd.services.alerta = {
description = "Alerta Monitoring System";
wantedBy = [ "multi-user.target" ];
after = [ "networking.target" ];
environment = {
ALERTA_SVR_CONF_FILE = alertaConf;
};
serviceConfig = {
ExecStart = "${pkgs.alerta-server}/bin/alertad run --port ${toString cfg.port} --host ${cfg.bind}";
User = "alerta";
Group = "alerta";
};
};
environment.systemPackages = [ pkgs.alerta ];
users.users.alerta = {
uid = config.ids.uids.alerta;
description = "Alerta user";
};
users.groups.alerta = {
gid = config.ids.gids.alerta;
};
};
}
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