first draft of getBlobs

[agnxsh]

ethereum/execution-apis#559

if EL supports engine_getBlobsV1

• makes the block available as soon as the CL gets all the required blobs from the blob pool
• populates blob quarantine with that info (should probably verify proofs and inclusion once, like gossip?)
• pops from blob quarantine and add blobs to the block processor

else

• does everything the conventional way

Note: getBlobs in nimbus-eth2 here is made to be backward compatible from Electra and NOT Deneb (Deneb is what the spec suggests)

CI failing: because of some nim-web3 upstream incompatibilities

[github-actions]

Unit Test Results

       15 files  ±0    2 614 suites  ±0   1h 13m 41s ⏱️ -35s
  6 412 tests ±0    5 891 ✔️ ±0  521 💤 ±0  0 ❌ ±0 
44 616 runs  ±0  43 898 ✔️ ±0  718 💤 ±0  0 ❌ ±0 

Results for commit 03e11ee. ± Comparison against base commit a629d6b.

♻️ This comment has been updated with latest results.

[agnxsh]

for devnet testing locally, use ethpandaops/nimbus-eth2:getBlobs

[tersec]

Obligatory comment about debugEcho (but yeah, it's a draft PR and useful for now)

[agnxsh]

just for now, until i see things are ok in the local devnet

[agnxsh]

2025-02-14 13:24:27 INF 2025-02-14 07:54:27.006+00:00 Slot end                                   topics="beacnde" slot=234 nextActionWait=1s993ms123us121ns nextAttestationSlot=235 nextProposalSlot=236 syncCommitteeDuties=current head=4932c763:234
2025-02-14 13:24:28 WRN 2025-02-14 07:54:28.713+00:00 Peer count low, no new peers discovered    topics="networking" discovered_nodes=0 new_peers=@[] current_peers=1 wanted_peers=160
2025-02-14 13:24:29 INF 2025-02-14 07:54:28.999+00:00 Slot start                                 topics="beacnde" nextFork=Fulu:100000001 head=4932c763:234 delay=137us922ns finalized=5:5177fdfd peers=1 slot=235 sync=synced epoch=7
2025-02-14 13:24:29 pulled blobs from el
2025-02-14 13:24:29 9
2025-02-14 13:24:31 INF 2025-02-14 07:54:31.295+00:00 Attestation sent                           topics="beacval" attestation="(committee_index: 0, attester_index: 28, data: (slot: 235, index: 0, beacon_block_root: \"61632bd0\", source: \"6:f956b1f3\", target: \"7:a67fac0a\"), signature: \"929f5919\")" delay=-1s703ms988us327ns subnet_id=11
2025-02-14 13:24:31 INF 2025-02-14 07:54:31.295+00:00 Attestation sent                           topics="beacval" attestation="(committee_index: 0, attester_index: 52, data: (slot: 235, index: 0, beacon_block_root: \"61632bd0\", source: \"6:f956b1f3\", target: \"7:a67fac0a\"), signature: \"b5d6aa5c\")" delay=-1s703ms537us202ns subnet_id=11
2025-02-14 13:24:31 INF 2025-02-14 07:54:31.296+00:00 Sync committee message sent 

we're finalising with nimbus running getBlobs in a devnet.

[agnxsh]

we can get some better decision making on whether to validate blob gossip or pull blobs from EL every slot, by caching engine_exchangeCapabilities, however a good interval should be decided as ELs can be swapped on the run.