Selective Blob Archiving

[optix2000]

Description

We would like to see if an option can be added to selectively archive blobs that were made by a specific list of addresses.

This allows users to only archive blobs that they need long term (ie rollups only archiving their own blobs) instead of all blobs.

Version

N/A

Present Behaviour

Blob archiving is all or nothing

Expected Behaviour

Support a flag that takes a list of addresses and does not prune any blobs made by those addresses. Effectively a prune blacklist.

Steps to resolve

[michaelsproul]

At first blush this seems hard. Lighthouse doesn't do much introspection of transactions and our database currently maintains simple invariants like "I have all blobs between N and M". We'd need to change both of those to make this work

[michaelsproul]

What's the alternative if we don't do this? Rollups need to maintain an archive of the blobs they're interested in separately. What benefit does having them inside Lighthouse have?