berrypod/lib/berrypod_web/plugs/broken_url_tracker.ex
jamey 9a27723b52
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persist image cache on fly volume across deploys
Image variants were written to the ephemeral release directory
and wiped on every deploy, causing 500 errors with 50s timeouts
as browsers waited for images that could never be served.

- Point image_cache_dir at /data/image_cache in prod
- Add Plug.Static to serve from the persistent volume
- Exclude /image_cache/ from broken URL tracking

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-02 09:49:53 +00:00

41 lines
1.2 KiB
Elixir

defmodule BerrypodWeb.Plugs.BrokenUrlTracker do
@moduledoc """
Wraps the router to record 404s in the broken URLs table.
Works in dev mode too — Plug.Debugger intercepts exceptions before
error templates render, so we catch NoRouteError here, record it,
then re-raise so the normal error handling continues.
"""
@behaviour Plug
def init(opts) do
router = Keyword.fetch!(opts, :router)
router_opts = router.init([])
{router, router_opts}
end
def call(conn, {router, router_opts}) do
router.call(conn, router_opts)
rescue
e in Phoenix.Router.NoRouteError ->
unless static_path?(conn.request_path) do
prior_hits = Berrypod.Analytics.count_pageviews_for_path(conn.request_path)
Berrypod.Redirects.record_broken_url(conn.request_path, prior_hits)
if prior_hits > 0 do
Berrypod.Redirects.attempt_auto_resolve(conn.request_path)
end
end
reraise e, __STACKTRACE__
end
defp static_path?(path) do
String.starts_with?(path, "/assets/") or
String.starts_with?(path, "/images/") or
String.starts_with?(path, "/image_cache/") or
String.starts_with?(path, "/favicon")
end
end