- try do
- Cachex.fetch!(:rich_media_cache, url, fn _ ->
- {:commit, parse_url(url)}
- end)
- rescue
- e ->
- {:error, "Cachex error: #{inspect(e)}"}
+ with {:ok, data} <- get_cached_or_parse(url),
+ {:ok, _} <- set_ttl_based_on_image(data, url) do
+ {:ok, data}
+ else
+ {:error, {:invalid_metadata, data}} = e ->
+ Logger.debug(fn -> "Incomplete or invalid metadata for #{url}: #{inspect(data)}" end)
+ e
+
+ error ->
+ Logger.error(fn -> "Rich media error for #{url}: #{inspect(error)}" end)
+ error
+ end
+ end
+
+ defp get_cached_or_parse(url) do
+ case Cachex.fetch!(:rich_media_cache, url, fn _ -> {:commit, parse_url(url)} end) do
+ {:ok, _data} = res ->
+ res
+
+ {:error, _} = e ->
+ ttl = Pleroma.Config.get([:rich_media, :failure_backoff], 60_000)
+ Cachex.expire(:rich_media_cache, url, ttl)
+ e
+ end
+ end
+ end
+
+ @doc """
+ Set the rich media cache based on the expiration time of image.
+
+ Adopt behaviour `Pleroma.Web.RichMedia.Parser.TTL`
+
+ ## Example
+
+ defmodule MyModule do
+ @behaviour Pleroma.Web.RichMedia.Parser.TTL
+ def ttl(data, url) do
+ image_url = Map.get(data, :image)
+ # do some parsing in the url and get the ttl of the image
+ # and return ttl is unix time
+ parse_ttl_from_url(image_url)
+ end