AkurAI-Build

Latest change a3e6c2c8498f91b9503a56f8586ff88965ecf57a - Deploy to the systemd-managed service with health-gated rollback by Ólafur Búi Ólafsson

#!/bin/sh
# Deploy the freshly packaged akurai binary to the systemd-managed service.
# Swaps the binary atomically, restarts the unit, health-gates the result,
# and rolls back to the previous binary if the service does not come up.
set -eu

bin_dir="${AKURAI_SERVICE_LIB:-$HOME/.local/lib/akurai-build}"
bin="$bin_dir/akurai"
previous="$bin.previous"
health_url="${AKURAI_HEALTH_URL:-http://127.0.0.1:3210/api/health}"

test -x target/release/akurai
curl -fsS "$health_url" >/dev/null

# Preserve the running binary for rollback, then swap via rename so the
# replacement is atomic even while the old inode stays busy.
cp "$bin" "$previous"
install -m 755 target/release/akurai "$bin.next"
mv "$bin.next" "$bin"

rollback() {
  status=$?
  trap - EXIT HUP INT TERM
  printf '%s\n' "deploy failed; rolling back to previous binary" >&2
  mv "$previous" "$bin"
  sudo -n systemctl restart akurai-build || true
  exit "$status"
}
trap rollback EXIT HUP INT TERM

sudo -n systemctl restart akurai-build

attempt=0
while [ "$attempt" -lt 30 ]; do
  if curl -fsS "$health_url" >/dev/null 2>&1; then
    trap - EXIT HUP INT TERM
    rm -f "$previous"
    printf '%s\n' "deploy healthy"
    exit 0
  fi
  attempt=$((attempt + 1))
  sleep 2
done

printf '%s\n' "replacement service did not become healthy" >&2
exit 1