nixos/site.nix
2025-02-10 00:34:21 +00:00

74 lines
2.3 KiB
Nix

{ config, pkgs, lib, ... }:
let
autodeploy = pkgs.buildGoModule {
name = "autodeploy";
src = ./autodeploy;
vendorHash = "sha256-H8Wa1GoXjU8mkaE0ofdA1mO+rNo3l4s0nxTVih9LuWs=";
};
buildScript = ''
rev=$(git ls-remote https://git.orga.cebula.camp/infra/site | grep refs/heads/nix | cut -f1)
pkg=$(nix-build -I nixpkgs=${pkgs.path} --no-out-link -E 'import (builtins.fetchGit { url = "https://git.orga.cebula.camp/infra/site"; rev="'$rev'"; })')
'';
in {
services.nginx.virtualHosts."cebula.camp" = {
forceSSL = true;
enableACME = true;
locations."/" = {
proxyPass = "http://localhost:3000/";
proxyWebsockets = true;
};
locations."/.not-well-known/update" = {
proxyPass = "http://unix:/run/site-autodeploy.sock";
extraConfig = ''
proxy_http_version 1.0;
'';
};
};
systemd.sockets.site-autodeploy = {
wantedBy = [ "sockets.target" ];
socketConfig = {
ListenStream = "/run/site-autodeploy.sock";
SocketMode = "0600";
SocketUser = config.services.nginx.user;
Accept = true;
MaxConnections=1;
};
};
systemd.services."site-autodeploy@" = {
path = [ pkgs.git pkgs.nix pkgs.bash pkgs.systemd ];
script = ''
set -eu
rev=$(git ls-remote https://git.orga.cebula.camp/infra/site | grep refs/heads/nix | cut -f1)
if [ -n "$(nix-build --dry-run -I nixpkgs=${pkgs.path} -E 'import (builtins.fetchGit { url = "https://git.orga.cebula.camp/infra/site"; rev="'$rev'"; })' 2>&1)" ]; then
echo -e "HTTP/1.0 200 Ok\r\n\r\n\r\n"
${buildScript}
systemctl restart cebula-site
else
echo -e "HTTP/1.0 304 Not Modified\r\nContent-Length: 0\r\n\r\n"
fi
'';
unitConfig = {
CollectMode="inactive-or-failed";
};
serviceConfig = {
Type = "oneshot";
# TODO: run as an unprivileged user:
# 1. figure out why rootless podman is broken, probaby something with
# subuid/subgid maps with LDAP.
# 2. let the unprivileged user sudo into a systemctl unit restart
User = "root";
StandardOutput = "socket";
};
};
systemd.services.cebula-site = {
wantedBy = [ "multi-user.target" ];
path = [ pkgs.git pkgs.nix pkgs.bash ];
script = ''
${buildScript}
exec $pkg/bin/cebula-site
'';
};
}