noisebell/remote/flake.nix

242 lines
10 KiB
Nix

{
description = "NixOS configuration for noisebell remote services";
inputs = {
nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
agenix = {
url = "github:ryantm/agenix";
inputs.nixpkgs.follows = "nixpkgs";
};
noisebell-cache.url = "path:./cache-service";
noisebell-discord.url = "path:./discord-bot";
noisebell-rss.url = "path:./rss-service";
};
outputs = { self, nixpkgs, agenix, noisebell-cache, noisebell-discord, noisebell-rss }:
let
# ── Cache module ──────────────────────────────────────────────────
cacheModule = { config, lib, pkgs, ... }:
let cfg = config.services.noisebell-cache; in
{
options.services.noisebell-cache = {
enable = lib.mkEnableOption "noisebell cache service";
domain = lib.mkOption { type = lib.types.str; };
piAddress = lib.mkOption { type = lib.types.str; };
piApiKeyFile = lib.mkOption { type = lib.types.path; description = "Path to agenix secret for authenticating to Pi GET endpoints."; };
inboundApiKeyFile = lib.mkOption { type = lib.types.path; };
port = lib.mkOption { type = lib.types.port; default = 3000; };
statusPollIntervalSecs = lib.mkOption { type = lib.types.ints.positive; default = 60; };
infoPollIntervalSecs = lib.mkOption { type = lib.types.ints.positive; default = 300; };
offlineThreshold = lib.mkOption { type = lib.types.ints.positive; default = 3; };
retryAttempts = lib.mkOption { type = lib.types.ints.unsigned; default = 3; };
retryBaseDelaySecs = lib.mkOption { type = lib.types.ints.positive; default = 1; };
httpTimeoutSecs = lib.mkOption { type = lib.types.ints.positive; default = 10; };
dataDir = lib.mkOption { type = lib.types.str; default = "/var/lib/noisebell-cache"; };
outboundWebhooks = lib.mkOption {
type = lib.types.listOf (lib.types.submodule {
options = {
url = lib.mkOption { type = lib.types.str; };
secretFile = lib.mkOption { type = lib.types.nullOr lib.types.path; default = null; };
};
});
default = [];
};
};
config = lib.mkIf cfg.enable {
users.users.noisebell-cache = { isSystemUser = true; group = "noisebell-cache"; };
users.groups.noisebell-cache = {};
services.caddy.virtualHosts."${cfg.domain}".extraConfig = ''
reverse_proxy localhost:${toString cfg.port}
'';
systemd.services.noisebell-cache = let
bin = "${noisebell-cache.packages.x86_64-linux.default}/bin/noisebell-cache";
webhookExports = lib.concatImapStringsSep "\n" (i: wh:
let idx = toString (i - 1); in
''export NOISEBELL_CACHE_WEBHOOK_${idx}_URL="${wh.url}"'' +
lib.optionalString (wh.secretFile != null)
''\nexport NOISEBELL_CACHE_WEBHOOK_${idx}_SECRET="$(cat ${wh.secretFile})"''
) cfg.outboundWebhooks;
in {
description = "Noisebell cache service";
wantedBy = [ "multi-user.target" ];
after = [ "network-online.target" ];
wants = [ "network-online.target" ];
environment = {
NOISEBELL_CACHE_PORT = toString cfg.port;
NOISEBELL_CACHE_PI_ADDRESS = cfg.piAddress;
NOISEBELL_CACHE_DATA_DIR = cfg.dataDir;
NOISEBELL_CACHE_STATUS_POLL_INTERVAL_SECS = toString cfg.statusPollIntervalSecs;
NOISEBELL_CACHE_INFO_POLL_INTERVAL_SECS = toString cfg.infoPollIntervalSecs;
NOISEBELL_CACHE_OFFLINE_THRESHOLD = toString cfg.offlineThreshold;
NOISEBELL_CACHE_RETRY_ATTEMPTS = toString cfg.retryAttempts;
NOISEBELL_CACHE_RETRY_BASE_DELAY_SECS = toString cfg.retryBaseDelaySecs;
NOISEBELL_CACHE_HTTP_TIMEOUT_SECS = toString cfg.httpTimeoutSecs;
RUST_LOG = "info";
};
script = ''
export NOISEBELL_CACHE_INBOUND_API_KEY="$(cat ${cfg.inboundApiKeyFile})"
export NOISEBELL_CACHE_PI_API_KEY="$(cat ${cfg.piApiKeyFile})"
${webhookExports}
exec ${bin}
'';
serviceConfig = {
Type = "simple";
Restart = "on-failure";
RestartSec = 5;
User = "noisebell-cache";
Group = "noisebell-cache";
StateDirectory = "noisebell-cache";
NoNewPrivileges = true;
ProtectSystem = "strict";
ProtectHome = true;
PrivateTmp = true;
ProtectKernelTunables = true;
ProtectKernelModules = true;
ProtectControlGroups = true;
RestrictSUIDSGID = true;
ReadWritePaths = [ cfg.dataDir ];
};
};
};
};
# ── Discord module ────────────────────────────────────────────────
discordModule = { config, lib, pkgs, ... }:
let cfg = config.services.noisebell-discord; in
{
options.services.noisebell-discord = {
enable = lib.mkEnableOption "noisebell Discord bot";
domain = lib.mkOption { type = lib.types.str; };
port = lib.mkOption { type = lib.types.port; default = 3001; };
discordTokenFile = lib.mkOption { type = lib.types.path; };
channelId = lib.mkOption { type = lib.types.str; };
webhookSecretFile = lib.mkOption { type = lib.types.path; };
};
config = lib.mkIf cfg.enable {
users.users.noisebell-discord = { isSystemUser = true; group = "noisebell-discord"; };
users.groups.noisebell-discord = {};
services.caddy.virtualHosts."${cfg.domain}".extraConfig = ''
reverse_proxy localhost:${toString cfg.port}
'';
systemd.services.noisebell-discord = let
bin = "${noisebell-discord.packages.x86_64-linux.default}/bin/noisebell-discord";
in {
description = "Noisebell Discord bot";
wantedBy = [ "multi-user.target" ];
after = [ "network-online.target" ];
wants = [ "network-online.target" ];
environment = {
NOISEBELL_DISCORD_PORT = toString cfg.port;
NOISEBELL_DISCORD_CHANNEL_ID = cfg.channelId;
RUST_LOG = "info";
};
script = ''
export NOISEBELL_DISCORD_TOKEN="$(cat ${cfg.discordTokenFile})"
export NOISEBELL_DISCORD_WEBHOOK_SECRET="$(cat ${cfg.webhookSecretFile})"
exec ${bin}
'';
serviceConfig = {
Type = "simple";
Restart = "on-failure";
RestartSec = 5;
User = "noisebell-discord";
Group = "noisebell-discord";
NoNewPrivileges = true;
ProtectSystem = "strict";
ProtectHome = true;
PrivateTmp = true;
ProtectKernelTunables = true;
ProtectKernelModules = true;
ProtectControlGroups = true;
RestrictSUIDSGID = true;
};
};
};
};
# ── RSS module ────────────────────────────────────────────────────
rssModule = { config, lib, pkgs, ... }:
let cfg = config.services.noisebell-rss; in
{
options.services.noisebell-rss = {
enable = lib.mkEnableOption "noisebell RSS/Atom feed";
domain = lib.mkOption { type = lib.types.str; };
port = lib.mkOption { type = lib.types.port; default = 3002; };
webhookSecretFile = lib.mkOption { type = lib.types.path; };
dataDir = lib.mkOption { type = lib.types.str; default = "/var/lib/noisebell-rss"; };
};
config = lib.mkIf cfg.enable {
users.users.noisebell-rss = { isSystemUser = true; group = "noisebell-rss"; };
users.groups.noisebell-rss = {};
services.caddy.virtualHosts."${cfg.domain}".extraConfig = ''
reverse_proxy localhost:${toString cfg.port}
'';
systemd.services.noisebell-rss = let
bin = "${noisebell-rss.packages.x86_64-linux.default}/bin/noisebell-rss";
in {
description = "Noisebell RSS/Atom feed";
wantedBy = [ "multi-user.target" ];
after = [ "network-online.target" ];
wants = [ "network-online.target" ];
environment = {
NOISEBELL_RSS_PORT = toString cfg.port;
NOISEBELL_RSS_DATA_DIR = cfg.dataDir;
NOISEBELL_RSS_SITE_URL = "https://${cfg.domain}";
RUST_LOG = "info";
};
script = ''
export NOISEBELL_RSS_WEBHOOK_SECRET="$(cat ${cfg.webhookSecretFile})"
exec ${bin}
'';
serviceConfig = {
Type = "simple";
Restart = "on-failure";
RestartSec = 5;
User = "noisebell-rss";
Group = "noisebell-rss";
StateDirectory = "noisebell-rss";
NoNewPrivileges = true;
ProtectSystem = "strict";
ProtectHome = true;
PrivateTmp = true;
ProtectKernelTunables = true;
ProtectKernelModules = true;
ProtectControlGroups = true;
RestrictSUIDSGID = true;
ReadWritePaths = [ cfg.dataDir ];
};
};
};
};
in
{
nixosModules = {
cache = cacheModule;
discord = discordModule;
rss = rssModule;
};
nixosConfigurations.remote = nixpkgs.lib.nixosSystem {
system = "x86_64-linux";
modules = [
agenix.nixosModules.default
cacheModule
discordModule
rssModule
./configuration.nix
./hardware-configuration.nix
];
};
};
}