Race condition: replies get dropped if their in-reply-to post is still processing

[qazmlp]

A reply just (sporadically?) didn't make it to Bluesky. The log at https://fed.brid.gy/log?path=%2Fqueue%2Fwebmention%2C%2Finbox&start_time=1728105708&key=https%3A%2F%2Fwolfdo.gg%2Fnotes%2F9yz9tw8dfgws6ex9%2Factivity shows the following

I 2024-10-05 05:21:46.205812+00:00 Already seen this activity https://wolfdo.gg/notes/9yz9tw8dfgws6ex9/activity

Relevant thread on Bluesky: https://bsky.app/profile/qazm.bsky.social/post/3l5qmbrxis223

That looks like a race condition somewhere in the ActivityPub inbox to me.
(This activity doesn't have the green checkmark for delivering it to Bluesky.)

[snarfed]

Hah, race condition indeed. That reply (call it B) was to another reply (A) by the same author that was still processing when B came in. BF saw that A wasn't bridged, so it didn't bridge B either, due to the logic that replies to non-bridged post aren't bridged.

Ugh. I can think of ways to solve this, but they're all complicated. I don't see an easy fix yet.

(The log message was unrelated, we got two inbox deliveries of this reply and that log message was for the second one. Our logic for finding log messages is not the best 🤷)

[TomCasavant]

Let me know if you want me to file a different issue for this, but I'm pretty sure this is related to this issue

https://fed.brid.gy/ap/@[email protected] <- this bot auto reposts any post from https://fed.brid.gy/ap/@[email protected] if certain conditions are met and it boosts them basically immediately after the post is created. It looks like Bridgy is seeing the boost but doesn't do anything about it (I'm guessing because Bridgy hasn't processed the original post yet)

[snarfed]

Ah, interesting, true! That does sound likely.