tvl-depot/ops/modules/panettone.nix

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{ depot, config, lib, pkgs, ... }:
let
cfg = config.services.depot.panettone;
in
{
options.services.depot.panettone = with lib; {
enable = mkEnableOption "Panettone issue tracker";
port = mkOption {
description = "Port on which Panettone should listen";
type = types.int;
default = 7268;
};
dbHost = mkOption {
description = "Postgresql host to connect to for Panettone";
type = types.str;
default = "localhost";
};
dbName = mkOption {
description = "Name of the database for Panettone";
type = types.str;
default = "panettone";
};
dbUser = mkOption {
description = "Name of the database user for Panettone";
type = types.str;
default = "panettone";
};
secretsFile = mkOption {
description = ''
Path to a file containing secrets, in the format accepted
by systemd's EnvironmentFile
'';
type = types.str;
default = config.age.secretsDir + "/panettone";
};
irccatHost = mkOption {
description = "Hostname for the irccat instance";
type = types.str;
default = "localhost";
};
irccatPort = mkOption {
description = "Port for the irccat instance";
type = types.int;
default = 4722;
};
irccatChannel = mkOption {
description = "IRC channels to post to via irccat";
type = types.str;
};
};
config = lib.mkIf cfg.enable {
assertions = [{
assertion =
cfg.dbHost != "localhost" || config.services.postgresql.enable;
message = "Panettone requires a postgresql database";
}
{
assertion =
cfg.dbHost != "localhost" || config.services.postgresql.enableTCPIP;
message = "Panettone can only connect to the postgresql database over TCP";
}
{
assertion =
cfg.dbHost != "localhost" || (lib.any
(user: user.name == cfg.dbUser)
config.services.postgresql.ensureUsers);
message = "Panettone requires a database user";
}
{
assertion =
cfg.dbHost != "localhost" || (lib.any
(db: db == cfg.dbName)
config.services.postgresql.ensureDatabases);
message = "Panettone requires a database";
}];
systemd.services.panettone = {
wantedBy = [ "multi-user.target" ];
script = "${depot.web.panettone}/bin/panettone";
serviceConfig = {
DynamicUser = true;
Restart = "always";
EnvironmentFile = cfg.secretsFile;
};
environment = {
PANETTONE_PORT = toString cfg.port;
PGHOST = "localhost";
PGUSER = cfg.dbUser;
PGDATABASE = cfg.dbName;
IRCCATHOST = cfg.irccatHost;
IRCCATPORT = toString cfg.irccatPort;
ISSUECHANNEL = cfg.irccatChannel;
};
};
systemd.services.panettone-fixer = {
description = "Restart panettone regularly to work around b/225";
wantedBy = [ "multi-user.target" ];
script = "${pkgs.systemd}/bin/systemctl restart panettone";
serviceConfig.Type = "oneshot";
# We don't exactly know how frequently this occurs, but
# _probably_ not more than hourly.
startAt = "hourly";
};
};
}