nixpkgs/nixos/modules/services/development/zammad.nix
2024-11-24 14:42:43 +01:00

354 lines
10 KiB
Nix

{ config, lib, pkgs, ... }:
let
cfg = config.services.zammad;
settingsFormat = pkgs.formats.yaml { };
filterNull = lib.filterAttrs (_: v: v != null);
serviceConfig = {
Type = "simple";
Restart = "always";
User = cfg.user;
Group = cfg.group;
PrivateTmp = true;
StateDirectory = "zammad";
WorkingDirectory = package;
};
environment = {
RAILS_ENV = "production";
NODE_ENV = "production";
RAILS_SERVE_STATIC_FILES = "true";
RAILS_LOG_TO_STDOUT = "true";
REDIS_URL = "redis://${cfg.redis.host}:${toString cfg.redis.port}";
};
databaseConfig = settingsFormat.generate "database.yml" cfg.database.settings;
package = cfg.package.override {
dataDir = cfg.dataDir;
};
in
{
options = {
services.zammad = {
enable = lib.mkEnableOption "Zammad, a web-based, open source user support/ticketing solution";
package = lib.mkPackageOption pkgs "zammad" { };
user = lib.mkOption {
type = lib.types.str;
default = "zammad";
description = ''
Name of the Zammad user.
'';
};
group = lib.mkOption {
type = lib.types.str;
default = "zammad";
description = ''
Name of the Zammad group.
'';
};
dataDir = lib.mkOption {
type = lib.types.path;
default = "/var/lib/zammad";
description = ''
Path to a folder that will contain Zammad working directory.
'';
};
host = lib.mkOption {
type = lib.types.str;
default = "127.0.0.1";
example = "192.168.23.42";
description = "Host address.";
};
openPorts = lib.mkOption {
type = lib.types.bool;
default = false;
description = "Whether to open firewall ports for Zammad";
};
port = lib.mkOption {
type = lib.types.port;
default = 3000;
description = "Web service port.";
};
websocketPort = lib.mkOption {
type = lib.types.port;
default = 6042;
description = "Websocket service port.";
};
redis = {
createLocally = lib.mkOption {
type = lib.types.bool;
default = true;
description = "Whether to create a local redis automatically.";
};
name = lib.mkOption {
type = lib.types.str;
default = "zammad";
description = ''
Name of the redis server. Only used if `createLocally` is set to true.
'';
};
host = lib.mkOption {
type = lib.types.str;
default = "localhost";
description = ''
Redis server address.
'';
};
port = lib.mkOption {
type = lib.types.port;
default = 6379;
description = "Port of the redis server.";
};
};
database = {
host = lib.mkOption {
type = lib.types.str;
default = "/run/postgresql";
description = ''
Database host address.
'';
};
port = lib.mkOption {
type = lib.types.nullOr lib.types.port;
default = null;
description = "Database port. Use `null` for default port.";
};
name = lib.mkOption {
type = lib.types.str;
default = "zammad";
description = ''
Database name.
'';
};
user = lib.mkOption {
type = lib.types.nullOr lib.types.str;
default = "zammad";
description = "Database user.";
};
passwordFile = lib.mkOption {
type = lib.types.nullOr lib.types.path;
default = null;
example = "/run/keys/zammad-dbpassword";
description = ''
A file containing the password for {option}`services.zammad.database.user`.
'';
};
createLocally = lib.mkOption {
type = lib.types.bool;
default = true;
description = "Whether to create a local database automatically.";
};
settings = lib.mkOption {
type = settingsFormat.type;
default = { };
example = lib.literalExpression ''
{
}
'';
description = ''
The {file}`database.yml` configuration file as key value set.
See \<TODO\>
for list of configuration parameters.
'';
};
};
secretKeyBaseFile = lib.mkOption {
type = lib.types.nullOr lib.types.path;
default = null;
example = "/run/keys/secret_key_base";
description = ''
The path to a file containing the
`secret_key_base` secret.
Zammad uses `secret_key_base` to encrypt
the cookie store, which contains session data, and to digest
user auth tokens.
Needs to be a 64 byte long string of hexadecimal
characters. You can generate one by running
```
openssl rand -hex 64 >/path/to/secret_key_base_file
```
This should be a string, not a nix path, since nix paths are
copied into the world-readable nix store.
'';
};
};
};
config = lib.mkIf cfg.enable {
services.zammad.database.settings = {
production = lib.mapAttrs (_: v: lib.mkDefault v) (filterNull {
adapter = "postgresql";
database = cfg.database.name;
pool = 50;
timeout = 5000;
encoding = "utf8";
username = cfg.database.user;
host = cfg.database.host;
port = cfg.database.port;
});
};
networking.firewall.allowedTCPPorts = lib.mkIf cfg.openPorts [
config.services.zammad.port
config.services.zammad.websocketPort
];
users.users.${cfg.user} = {
group = "${cfg.group}";
isSystemUser = true;
};
users.groups.${cfg.group} = { };
assertions = [
{
assertion = cfg.database.createLocally -> cfg.database.user == "zammad" && cfg.database.name == "zammad";
message = "services.zammad.database.user must be set to \"zammad\" if services.zammad.database.createLocally is set to true";
}
{
assertion = cfg.database.createLocally -> cfg.database.passwordFile == null;
message = "a password cannot be specified if services.zammad.database.createLocally is set to true";
}
{
assertion = cfg.redis.createLocally -> cfg.redis.host == "localhost";
message = "the redis host must be localhost if services.zammad.redis.createLocally is set to true";
}
];
services.postgresql = lib.optionalAttrs (cfg.database.createLocally) {
enable = true;
ensureDatabases = [ cfg.database.name ];
ensureUsers = [
{
name = cfg.database.user;
ensureDBOwnership = true;
}
];
};
services.redis = lib.optionalAttrs cfg.redis.createLocally {
servers."${cfg.redis.name}" = {
enable = true;
port = cfg.redis.port;
};
};
systemd.services.zammad-web = {
inherit environment;
serviceConfig = serviceConfig // {
# loading all the gems takes time
TimeoutStartSec = 1200;
};
after = [
"network.target"
"systemd-tmpfiles-setup.service"
] ++ lib.optionals (cfg.database.createLocally) [
"postgresql.service"
] ++ lib.optionals cfg.redis.createLocally [
"redis-${cfg.redis.name}.service"
];
requires = lib.optionals (cfg.database.createLocally) [
"postgresql.service"
];
description = "Zammad web";
wantedBy = [ "multi-user.target" ];
preStart = ''
# config file
cat ${databaseConfig} > ${cfg.dataDir}/config/database.yml
${lib.optionalString (cfg.database.passwordFile != null) ''
{
echo -n " password: "
cat ${cfg.database.passwordFile}
} >> ${cfg.dataDir}/config/database.yml
''}
${lib.optionalString (cfg.secretKeyBaseFile != null) ''
{
echo "production: "
echo -n " secret_key_base: "
cat ${cfg.secretKeyBaseFile}
} > ${cfg.dataDir}/config/secrets.yml
''}
# needed for cleanup
shopt -s extglob
# cleanup state directory from module before refactoring in
# https://github.com/NixOS/nixpkgs/pull/277456
if [[ -e ${cfg.dataDir}/node_modules ]]; then
rm -rf ${cfg.dataDir}/!("tmp"|"config"|"log"|"state_dir_migrated"|"db_seeded")
rm -rf ${cfg.dataDir}/config/!("database.yml"|"secrets.yml")
# state directory cleanup required --> zammad was already installed --> do not seed db
echo true > ${cfg.dataDir}/db_seeded
fi
SEEDED=$(cat ${cfg.dataDir}/db_seeded)
if [[ $SEEDED != "true" ]]; then
echo "Initialize database"
./bin/rake --no-system db:migrate
./bin/rake --no-system db:seed
echo true > ${cfg.dataDir}/db_seeded
else
echo "Migrate database"
./bin/rake --no-system db:migrate
fi
echo "Done"
'';
script = "./script/rails server -b ${cfg.host} -p ${toString cfg.port}";
};
systemd.tmpfiles.rules = [
"d ${cfg.dataDir} 0750 ${cfg.user} ${cfg.group} - -"
"d ${cfg.dataDir}/config 0750 ${cfg.user} ${cfg.group} - -"
"d ${cfg.dataDir}/tmp 0750 ${cfg.user} ${cfg.group} - -"
"d ${cfg.dataDir}/log 0750 ${cfg.user} ${cfg.group} - -"
"f ${cfg.dataDir}/config/secrets.yml 0640 ${cfg.user} ${cfg.group} - -"
"f ${cfg.dataDir}/config/database.yml 0640 ${cfg.user} ${cfg.group} - -"
"f ${cfg.dataDir}/db_seeded 0640 ${cfg.user} ${cfg.group} - -"
];
systemd.services.zammad-websocket = {
inherit serviceConfig environment;
after = [ "zammad-web.service" ];
requires = [ "zammad-web.service" ];
description = "Zammad websocket";
wantedBy = [ "multi-user.target" ];
script = "./script/websocket-server.rb -b ${cfg.host} -p ${toString cfg.websocketPort} start";
};
systemd.services.zammad-worker = {
inherit serviceConfig environment;
after = [ "zammad-web.service" ];
requires = [ "zammad-web.service" ];
description = "Zammad background worker";
wantedBy = [ "multi-user.target" ];
script = "./script/background-worker.rb start";
};
};
meta.maintainers = with lib.maintainers; [ taeer netali ];
}