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# Configuration for the TVL buildkite agents.
{ config, depot, pkgs, lib, ... }:
let
cfg = config.services.depot.buildkite;
agents = lib.range 1 cfg.agentCount;
description = "Buildkite agents for TVL";
besadiiWithConfig = name: pkgs.writeShellScript "besadii-whitby" ''
export BESADII_CONFIG=/run/agenix/buildkite-besadii-config
exec -a ${name} ${depot.ops.besadii}/bin/besadii "$@"
'';
# All Buildkite hooks are actually besadii, but it's being invoked
# with different names.
buildkiteHooks = pkgs.runCommand "buildkite-hooks" { } ''
mkdir -p $out/bin
ln -s ${besadiiWithConfig "post-command"} $out/bin/post-command
'';
credentialHelper = pkgs.writeShellScriptBin "git-credential-gerrit-creds" ''
echo 'username=buildkite'
echo "password=$(jq -r '.gerritPassword' /run/agenix/buildkite-besadii-config)"
'';
in
{
options.services.depot.buildkite = {
enable = lib.mkEnableOption description;
agentCount = lib.mkOption {
type = lib.types.int;
description = "Number of Buildkite agents to launch";
};
};
config = lib.mkIf cfg.enable {
# Run the Buildkite agents using the default upstream module.
services.buildkite-agents = builtins.listToAttrs (map
(n: rec {
name = "whitby-${toString n}";
value = {
inherit name;
enable = true;
tokenPath = config.age.secretsDir + "/buildkite-agent-token";
privateSshKeyPath = config.age.secretsDir + "/buildkite-private-key";
hooks.post-command = "${buildkiteHooks}/bin/post-command";
hooks.environment = ''
export PATH=$PATH:/run/wrappers/bin
'';
runtimePackages = with pkgs; [
bash
coreutils
credentialHelper
curl
git
gnutar
gzip
jq
nix
];
};
})
agents);
# Set up a group for all Buildkite agent users
users = {
groups.buildkite-agents = { };
users = builtins.listToAttrs (map
(n: rec {
name = "buildkite-agent-whitby-${toString n}";
value = {
isSystemUser = true;
group = lib.mkForce "buildkite-agents";
extraGroups = [ name "docker" ];
};
})
agents);
};
};
}
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