infra/services/hydra/default.nix
2022-08-14 16:49:30 +02:00

145 lines
4.1 KiB
Nix

{ hydra }: { lib
, pkgs
, config
, ...
}:
with lib; let
cfg = config;
hydraPort = 3000;
upload-to-cachix = pkgs.writeScriptBin "upload-to-cachix" ''
#!/bin/sh
set -eu
set -f # disable globbing
# skip push if the declarative job spec
OUT_END=$(echo ''${OUT_PATHS: -10})
if [ "$OUT_END" == "-spec.json" ]; then
exit 0
fi
export HOME=/root
exec ${pkgs.cachix}/bin/cachix -c ${config.sops.secrets.nix-community-cachix.path} push nix-community $OUT_PATHS > /tmp/hydra_cachix 2>&1
'';
in
{
options.services.hydra = {
adminPasswordFile = mkOption {
type = types.str;
description = "The initial password for the Hydra admin account";
};
usersFile = mkOption {
type = types.str;
description = ''
declarative user accounts for hydra.
format: user;role;password-hash;email-address;full-name
Password hash is computed by applying sha1 to the password.
'';
};
};
config = {
sops.secrets.hydra-admin-password.owner = "hydra";
sops.secrets.hydra-users.owner = "hydra";
nix.extraOptions = ''
builders-use-substitutes = true
allowed-uris = https://github.com/nix-community/ https://github.com/NixOS/
post-build-hook = ${upload-to-cachix}/bin/upload-to-cachix
'';
nixpkgs.config = {
whitelistedLicenses = with lib.licenses; [
unfreeRedistributable
issl
];
allowUnfreePredicate = pkg:
builtins.elem (lib.getName pkg) [
"cudnn_cudatoolkit"
"cudatoolkit"
];
};
services.hydra.package = hydra.defaultPackage.${pkgs.system};
sops.secrets.nix-community-cachix.sopsFile = ../../roles/nix-community-cache.yaml;
sops.secrets.id_buildfarm = { };
services.hydra = {
enable = true;
hydraURL = "https://hydra.nix-community.org";
notificationSender = "hydra@hydra.nix-community.org";
port = hydraPort;
useSubstitutes = true;
adminPasswordFile = config.sops.secrets.hydra-admin-password.path;
usersFile = config.sops.secrets.hydra-users.path;
extraConfig = ''
max_output_size = ${builtins.toString (8 * 1024 * 1024 * 1024)}
'';
};
nix = {
distributedBuilds = true;
buildMachines = [
{
hostName = "localhost";
systems = [ "x86_64-linux" "builtin" ];
maxJobs = 8;
supportedFeatures = [ "nixos-test" "big-parallel" "kvm" ];
}
];
};
services.postgresql = {
enable = true;
settings = {
effective_cache_size = "4GB";
shared_buffers = "4GB";
};
};
services.nginx.virtualHosts = {
"hydra.nix-community.org" = {
forceSSL = true;
enableACME = true;
locations."/".proxyPass = "http://localhost:${toString (config.services.hydra.port)}";
};
};
# Create a admin user and configure a declarative project
systemd.services.hydra-post-init = {
serviceConfig = {
Type = "oneshot";
TimeoutStartSec = "60";
};
wantedBy = [ "multi-user.target" ];
after = [ "hydra-server.service" ];
requires = [ "hydra-server.service" ];
environment = {
inherit (cfg.systemd.services.hydra-init.environment) HYDRA_DBI;
};
path = with pkgs; [ config.services.hydra.package netcat ];
script = ''
set -e
while IFS=';' read -r user role passwordhash email fullname; do
opts=("$user" "--role" "$role" "--password-hash" "$passwordhash")
if [[ -n "$email" ]]; then
opts+=("--email-address" "$email")
fi
if [[ -n "$fullname" ]]; then
opts+=("--full-name" "$fullname")
fi
hydra-create-user "''${opts[@]}"
done < ${cfg.services.hydra.usersFile}
while ! nc -z localhost ${toString hydraPort}; do
sleep 1
done
export HYDRA_ADMIN_PASSWORD=$(cat ${cfg.services.hydra.adminPasswordFile})
export URL=http://localhost:${toString hydraPort}
'';
};
};
}