depot/hosts/deploy.nix

95 lines
3 KiB
Nix

{ config, inputs, lib, self, withSystem, ... }:
let
inherit (lib) elem mapAttrs toLower;
inherit (config) gods defaultEffectSystem;
inherit (self) nixosConfigurations;
meta = import ../tools/meta.nix;
chosenHours = gods.fromLight;
withEffectSystem = withSystem defaultEffectSystem;
callUpon = name: host: withEffectSystem ({ config, hci-effects, ... }: let
inherit (hci-effects) runIf runNixOS;
inherit (host.enterprise) subdomain;
hostname = "${toLower name}.${subdomain}.${meta.domain}";
deploy-rs = inputs.deploy-rs.lib."${host.system}";
in {
effect = { branch, ... }: runIf (elem branch [ "master" "staging" ])
(runNixOS rec {
requiredSystemFeatures = [ "hci-deploy-agent-nixos" ];
inherit (nixosConfigurations.${name}) config;
secretsMap.ssh = "deploy-ssh";
userSetupScript = ''
writeSSHKey ssh
cat >>~/.ssh/known_hosts <<EOF
${hostname} ${host.ssh.id.publicKey}
EOF
'';
ssh.destination = "root@${hostname}";
postEffect = let
scheduleReboot = builtins.toFile "schedule-reboot.sh" /*bash*/ ''
currentTime=$(date +%s)
lastScheduledTime=$(consul kv get system/coordinated-reboot/last)
if [[ $? -ne 0 ]]; then
lastScheduledTime=$((currentTime - 300))
fi
nextScheduledTime=$((lastScheduledTime + 900))
if [[ $nextScheduledTime -lt $((currentTime + 300)) ]]; then
nextScheduledTime=$((currentTime + 300))
fi
consul kv put system/coordinated-reboot/last $nextScheduledTime
echo "Scheduling reboot for $nextScheduledTime"
systemd-analyze timestamp @$nextScheduledTime
busctl call \
org.freedesktop.login1 \
/org/freedesktop/login1 \
org.freedesktop.login1.Manager \
ScheduleShutdown st reboot ''${nextScheduledTime}000000
'';
in hci-effects.ssh ssh /*bash*/ ''
if [[ "$(realpath /run/booted-system/kernel)" != "$(realpath /run/current-system/kernel)" ]]; then
echo "Scheduling reboot for kernel upgrade"
if ! consul members >/dev/null; then
echo "Consul not active, skipping reboot"
exit 0
fi
consul lock --timeout=3m system/coordinated-reboot bash ${scheduleReboot}
fi
'';
});
deploy = {
inherit hostname;
profiles.system = {
user = "root";
sshUser = "deploy";
path = deploy-rs.activate.nixos self.nixosConfigurations.${name};
};
};
});
calledUponHours = mapAttrs callUpon chosenHours;
pick = format: _: calledUponHour: calledUponHour.${format};
in
{
herculesCI = { config, ... }: let
powers = mapAttrs (pick "effect") calledUponHours;
wield = mapAttrs (_: wieldPowerWith: wieldPowerWith config.repo);
in {
onPush.default.outputs.effects = wield powers;
};
flake.deploy.nodes = mapAttrs (pick "deploy") calledUponHours;
}